Dengan perkembangan pesat industri plastik global, permintaan terhadap produk plastik semakin meningkat dari hari ke hari, dan keperluan untuk prestasi produk, kawalan kos dan perlindungan alam sekitar juga menjadi semakin ketat. Masterbatch pengisi, sebagai bahan tambahan berfungsi utama dalam pemprosesan plastik, telah digunakan secara meluas dalam pelbagai bidang pengeluaran plastik kerana kelebihannya mengurangkan kos pengeluaran, meningkatkan prestasi produk dan mengoptimumkan kecekapan pemprosesan. Kami komited untuk menyediakan barisan pengeluaran granulasi termaju dan penyemperit berprestasi tinggi untuk pelbagai jenis masterbatch pengisi, bergantung pada pengalaman yang kaya dalam penyelidikan dan pembangunan teknologi penyemperitan dan pembuatan, untuk menyediakan sasaran, penyelesaian pemprosesan yang cekap dan boleh dipercayai untuk pengeluar masterbatch pengisi, membantu perusahaan meningkatkan kecekapan pengeluaran, memastikan kualiti produk, dan memperoleh kelebihan daya saing dalam persaingan pasaran yang sengit.
Artikel ini akan memberi tumpuan kepada bidang masterbatch pengisi, menghuraikan secara mendalam tentang konsep asas, pengelasan, proses pengeluaran masterbatch pengisi, peranan teras teknologi penyemperitan dalam pengeluaran granulasinya, kelebihan siri extruder kami dan penyesuaian sasarannya kepada pemprosesan masterbatch pengisi, serta medan aplikasi tertentu, kaedah penggunaan dan masalah dan penyelesaian biasa dalam pengeluaran. Ia akan menambah parameter teknikal terperinci, butiran proses dan titik kesakitan industri untuk memperkayakan kandungan, memenuhi keperluan bilangan perkataan bagi 3000-4000 perkataan, dan menyediakan rujukan komprehensif dan profesional untuk perusahaan dan pengamal yang berkaitan dalam industri masterbatch pengisi.
1. Gambaran Keseluruhan Industri Masterbatch Pengisi dan Ciri-ciri Produk
1.1 Situasi Semasa dan Trend Perkembangan Industri Masterbatch Pengisi
Dalam beberapa tahun kebelakangan ini, didorong oleh perkembangan pesat industri hiliran seperti pembungkusan, pembinaan, automotif, elektronik dan keperluan harian, pasaran masterbatch pengisi global telah menunjukkan trend pertumbuhan yang stabil. Masterbatch pengisi adalah sejenis bahan komposit yang dibuat dengan mencampurkan, lebur, penyemperitan dan pengisi bukan organik berbutir (seperti kalsium karbonat, talkum, barium sulfat, dll.) dengan pembawa polimer (seperti polietilena, polipropilena, polivinil klorida, dll.) dan bahan tambahan yang sesuai (seperti dispersan, penyerasi, pelincir, dll.) dalam perkadaran tertentu. Fungsi terasnya adalah untuk mengurangkan kos pengeluaran produk plastik sambil menambah baik atau mengekalkan prestasi asas produk plastik.
Mengikut statistik data yang berkaitan, saiz pasaran masterbatch pengisi global telah melebihi 20 bilion dolar AS, dan ia dijangka mengekalkan kadar pertumbuhan sebanyak 6%-9% dalam beberapa tahun akan datang. Antaranya, kalsium karbonat (CaCO3) masterbatch pengisi ialah jenis produk yang paling banyak digunakan, menyumbang lebih daripada 60% daripada jumlah pasaran masterbatch pengisi, diikuti oleh masterbatch pengisi talkum, barium sulfat (BaSO4) masterbatch pengisi dan masterbatch pengisi khas lain. Rantau Asia-Pasifik ialah pasaran pengeluaran dan penggunaan masterbatch pengisi terbesar di dunia, menyumbang lebih daripada 50% daripada bahagian pasaran global, yang terutamanya disebabkan oleh perkembangan pesat industri pemprosesan plastik di China, India dan negara lain, permintaan yang besar untuk pengurangan kos dan peningkatan prestasi produk plastik, dan peningkatan berterusan kapasiti sokongan industri.
Trend pembangunan industri masterbatch pengisi dicerminkan terutamanya dalam empat aspek: pertama, prestasi tinggi dan kefungsian. Dengan peningkatan keperluan produk plastik hiliran, masterbatch pengisi tidak lagi terhad kepada pengurangan kos, tetapi secara beransur-ansur berkembang ke arah kefungsian, seperti meningkatkan ketegaran, keliatan, rintangan haba, rintangan cuaca dan sifat penghalang produk plastik, dan membangunkan kumpulan induk pengisi berfungsi khas seperti kalis api, antistatik dan antibakteria; kedua, jumlah pengisian yang tinggi dan keterserakan yang baik. Di bawah premis memastikan prestasi produk, meningkatkan jumlah pengisian pengisi bukan organik boleh mengurangkan lagi kos pengeluaran, yang meletakkan keperluan yang lebih tinggi pada kebolehserakan masterbatch pengisi—kebolehserakan yang sangat baik boleh memastikan bahawa pengisi diagihkan sama rata dalam matriks plastik, mengelakkan penampilan bintik-bintik putih, bintik hitam atau aglomerasi dalam produk akhir; ketiga, perlindungan alam sekitar dan pencemaran yang rendah. Dengan pengukuhan dasar perlindungan alam sekitar global dan peningkatan kesedaran perlindungan alam sekitar, pengeluar masterbatch pengisi secara beransur-ansur mengguna pakai aditif dan proses pengeluaran yang mesra alam, mengurangkan pelepasan bahan berbahaya, dan membangunkan masterbatch pengisi boleh terurai untuk menyesuaikan diri dengan trend pembangunan plastik hijau; keempat, kecerdasan dan kecekapan peralatan pengeluaran. Bagi memenuhi skala besar, keperluan pengeluaran masterbatch pengisi yang berterusan dan berkualiti tinggi, pengilang sentiasa memperkenalkan barisan pengeluaran granulasi termaju dan sistem kawalan pintar, meningkatkan kecekapan pengeluaran, mengurangkan kos buruh dan memastikan kestabilan kualiti produk.
Dengan latar belakang ini, teknologi granulasi penyemperitan, as the core technology of filler masterbatch production, has become the key to determining the quality of filler masterbatch and the competitiveness of enterprises. The performance of extruders directly affects the dispersibility, particle shape, melting index and other key indicators of filler masterbatch. Our professional extruders and granulation production lines for filler masterbatch are developed in response to the characteristics of the industry and market demand, which can effectively solve the pain points in filler masterbatch processing (such as poor dispersibility, uneven particle size, low filling amount, penggunaan tenaga yang tinggi, dll.) and help enterprises achieve high-quality and efficient production.
1.2 Classification of Filler Masterbatch and Its Core Characteristics
Masterbatch pengisi boleh dibahagikan kepada jenis yang berbeza mengikut jenis pengisi, damar pembawa, medan permohonan dan jumlah pengisian. Setiap jenis masterbatch pengisi mempunyai ciri unik dan senario yang boleh digunakan. Berikut ialah pengenalan terperinci kepada klasifikasi biasa dan ciri teras bagi masterbatch pengisi:
1.2.1 Klasifikasi mengikut Jenis Pengisi:
Ini ialah kaedah pengelasan yang paling biasa untuk masterbatch pengisi. Mengikut jenis pengisi bukan organik, ia boleh dibahagikan terutamanya kepada kalsium karbonat (CaCO3) masterbatch pengisi, masterbatch pengisi talkum, barium sulfat (BaSO4) masterbatch pengisi, dan kumpulan induk pengisi khas lain (seperti masterbatch pengisi kaolin, masterbatch pengisi karbon hitam, masterbatch pengisi gentian kaca, dll.).
- Kalsium Karbonat (CaCO3) Pengisi Masterbatch: Ia adalah masterbatch pengisi yang paling banyak digunakan dengan kos terendah. Pengisi terutamanya kalsium karbonat ringan atau kalsium karbonat berat. Kalsium karbonat ringan mempunyai saiz zarah yang halus, keterserakan yang baik dan keputihan yang tinggi, yang sesuai untuk produk plastik dengan keperluan tinggi pada penampilan dan kehalusan (seperti filem plastik, produk pengacuan suntikan); kalsium karbonat berat mempunyai kekerasan yang tinggi, rintangan haus yang baik dan harga yang rendah, yang sesuai untuk produk plastik dengan keperluan yang tinggi pada ketegaran dan kawalan kos (seperti beg anyaman, tali pinggang pembungkusan, paip, dll.). Masterbatch pengisi kalsium karbonat bukan sahaja dapat mengurangkan kos pengeluaran, tetapi juga meningkatkan ketegaran, rintangan haba dan kestabilan dimensi produk plastik, dan mempunyai kesan pelincir tertentu, yang boleh meningkatkan kecairan pemprosesan plastik.
- Masterbatch Pengisi Talc: Pengisi adalah serbuk talkum dengan struktur berlapis. Serbuk talkum mempunyai sifat mekanikal yang baik, rintangan haba dan kestabilan kimia. Masterbatch pengisi talkum digunakan terutamanya dalam polipropilena (PP) produk plastik, yang boleh meningkatkan ketegaran dengan ketara, suhu herotan haba dan kekuatan hentaman produk PP, dan digunakan secara meluas dalam bahagian automotif, cengkerang perkakas rumah, paip plastik dan bidang lain yang memerlukan prestasi tinggi.
- Barium Sulfat (BaSO4) Pengisi Masterbatch: Pengisi adalah serbuk barium sulfat, yang mempunyai keputihan yang tinggi, ketelusan yang baik, lengai kimia dan rintangan sinaran. Barium sulfat pengisi masterbatch sesuai untuk produk plastik dengan keperluan tinggi pada ketelusan, keputihan dan kestabilan kimia (seperti filem plastik, botol plastik, produk plastik perubatan, dll.), dan juga boleh digunakan dalam produk plastik kalis sinaran (seperti peralatan perlindungan perubatan, aksesori loji tenaga nuklear, dll.).
1.2.2 Pengelasan mengikut Resin Pembawa:
Mengikut jenis resin pembawa yang digunakan, masterbatch pengisi boleh dibahagikan kepada polietilena (PE) masterbatch pengisi, polipropilena (PP) masterbatch pengisi, polivinil klorida (PVC) masterbatch pengisi, polietilena tereftalat (PET) masterbatch pengisi, dll. Pemilihan resin pembawa terutamanya ditentukan oleh jenis produk plastik hiliran. Contohnya, Masterbatch pengisi PE sesuai untuk produk plastik PE (seperti filem plastik, beg, paip); Masterbatch pengisi PP sesuai untuk produk plastik PP (seperti beg anyaman, bahagian pengacuan suntikan, bahagian automotif); Masterbatch pengisi PVC sesuai untuk produk plastik PVC (seperti paip PVC, profil, cadar).
1.2.3 Pengelasan mengikut Medan Aplikasi:
Mengikut bidang aplikasi produk plastik hiliran, masterbatch pengisi boleh dibahagikan kepada masterbatch pengisi gred filem, masterbatch pengisi gred suntikan, masterbatch pengisi gred penyemperitan, masterbatch pengisi gred pengacuan tamparan, dll. Masterbatch pengisi gred filem memerlukan kebolehserakan yang baik, kehalusan yang tinggi dan tiada kekotoran, untuk memastikan filem yang ditiup tidak mempunyai tompok putih, bintik hitam atau lubang jarum, and maintains good transparency and toughness; injection-grade filler masterbatch requires good fluidity and uniform particle size, to adapt to the rapid injection molding process and ensure the appearance and dimensional accuracy of injection products; extrusion-grade filler masterbatch requires good thermal stability and mechanical properties, to adapt to the high-temperature and high-pressure extrusion process of pipes, profiles and other products.
1.2.4 Classification by Filling Amount:
According to the filling amount of inorganic fillers, filler masterbatch can be divided into low-filling masterbatch (filling amount 30%-50%), medium-filling masterbatch (filling amount 50%-70%) and high-filling masterbatch (filling amount 70% dan ke atas). The filling amount is determined according to the performance requirements of downstream products and the processing capacity of equipment. Masterbatch pengisian tinggi mempunyai kesan pengurangan kos yang lebih jelas, tetapi ia mempunyai keperluan yang lebih tinggi pada keterserakan pengisi dan prestasi penyemperit—hanya penyemperit berprestasi tinggi boleh memastikan pencampuran dan pencairan bahan yang tinggi yang seragam, mengelakkan penggumpalan dan kecairan pemprosesan yang lemah.
Perlu diingat bahawa penunjuk prestasi teras masterbatch pengisi terutamanya termasuk keterserakan, keseragaman saiz zarah, indeks lebur, keputihan (untuk produk berwarna terang) dan keserasian dengan resin pembawa. Antaranya, keterserakan ialah penunjuk yang paling kritikal—keterserakan yang lemah akan membawa kepada pengagihan pengisi yang tidak sekata dalam produk plastik, mengakibatkan kecacatan seperti bintik putih, bintik hitam, aglomerasi dan produk rapuh, yang menjejaskan penampilan dan prestasi produk plastik secara serius. Oleh itu, pemilihan peralatan penyemperitan canggih dan teknologi pemprosesan saintifik adalah penting untuk memastikan kebolehserakan dan kualiti keseluruhan masterbatch pengisi.
2. Teknologi Teras Pengeluaran Masterbatch Pengisi: Teknologi Granulasi Penyemperitan
Teknologi granulasi penyemperitan ialah teknologi teras pengeluaran masterbatch pengisi, yang mengintegrasikan percampuran, lebur, menggunting, penyebaran dan granulasi. Ia mempunyai kelebihan kecekapan pengeluaran yang tinggi, kualiti produk yang baik, kebolehsuaian yang kuat kepada bahan mentah dan julat aplikasi yang luas. Dalam pengeluaran masterbatch pengisi, teknologi granulasi penyemperitan digunakan terutamanya untuk merealisasikan penyebaran seragam pengisi bukan organik dalam pembawa polimer, cairkan dan plastikkan adunan, dan kemudian extrude dan granulate untuk membentuk masterbatch pengisi berbutir dengan saiz seragam, kecairan yang baik dan prestasi yang stabil. Kualiti butiran penyemperitan secara langsung menentukan penunjuk prestasi utama masterbatch pengisi, seperti keterserakan, saiz zarah dan indeks lebur.
2.1 Ciri-ciri Bahan Mentah Masterbatch Pengisi dan Keperluan untuk Peralatan Penyemperitan
Bahan mentah masterbatch pengisi terutamanya termasuk tiga bahagian: pengisi bukan organik (seperti CaCO3, talkum, BaSO4), pembawa polimer (seperti PE, PP, PVC) dan bahan tambahan (seperti dispersan, penyerasi, pelincir, antioksidan, dll.). Ciri-ciri bahan mentah ini agak berbeza, yang mengemukakan keperluan khas untuk peralatan penyemperitan:
Pertama, pengisi bukan organik mempunyai kekerasan yang tinggi, keserasian yang lemah dengan pembawa polimer, dan mudah terkumpul. Kebanyakan pengisi bukan organik (seperti CaCO3, talkum) bersifat hidrofilik, manakala pembawa polimer adalah hidrofobik, yang membawa kepada keserasian yang lemah antara pengisi dan pembawa. Jika adunan dan ricih tidak mencukupi, pengisi akan menggumpal, yang tidak boleh tersebar secara seragam dalam pembawa, mengakibatkan kualiti masterbatch pengisi yang rendah. Selain itu, kekerasan tinggi pengisi bukan organik akan menyebabkan kehausan serius pada skru dan laras extruder semasa proses penyemperitan, yang memerlukan skru dan tong penyemperit mempunyai rintangan haus yang sangat tinggi.
Kedua, campuran masterbatch pengisi mempunyai kelikatan yang tinggi dan kecairan yang lemah. Penambahan sejumlah besar pengisi tak organik akan meningkatkan kelikatan campuran dengan ketara, mengurangkan kecairan pemprosesan, dan memerlukan penyemperit mempunyai kapasiti penyampaian yang kuat dan daya ricih untuk memastikan kemajuan lebur yang lancar, pencampuran dan penyemperitan.
Ketiga, julat suhu pemprosesan adalah sempit. Resin pembawa yang berbeza mempunyai takat lebur dan kestabilan haba yang berbeza. Contohnya, takat lebur PE ialah 100-130 ℃, takat lebur PP ialah 160-170 ℃, dan PVC mudah terurai pada suhu tinggi (melebihi 160 ℃). Oleh itu, peralatan penyemperitan perlu mempunyai kapasiti kawalan suhu yang tepat untuk memastikan bahawa campuran cair sepenuhnya tanpa penguraian haba, dan untuk mengelakkan penguraian bahan tambahan dan kemerosotan prestasi produk.
Berdasarkan ciri-ciri di atas, penyemperit skru tunggal tidak sesuai untuk pengeluaran masterbatch pengisi berskala besar dan berkualiti tinggi. Kerana penyemperit skru tunggal mempunyai julat ricih yang sempit, kapasiti pengepaman yang lemah dan tiada kesan pembersihan diri. Apabila memproses campuran kelikatan tinggi dan pengisi tinggi, ia mudah menyebabkan pengumpulan bahan, blockage and uneven mixing in the extruder barrel, resulting in poor dispersibility of filler masterbatch, uneven particle size and unstable product quality. Selain itu, the single-screw extruder has high energy consumption when processing high-filler materials, and the screw and barrel are severely worn, which increases the production cost and equipment maintenance cost of enterprises.
Penyemperit skru berkembar, sebaliknya, have obvious advantages in filler masterbatch production and have become the mainstream equipment for filler masterbatch extrusion granulation. Twin-screw extruders have a wider shear range, more effective pumping effect and self-cleaning effect, which can effectively solve the problems of poor compatibility, easy agglomeration and poor fluidity of filler masterbatch raw materials. Intermeshing dan berputar skru berkembar boleh menghasilkan daya ricih yang kuat dan daya menguli, yang boleh memecahkan sepenuhnya aglomerat pengisi bukan organik, jadikan pengisi tersebar seragam dalam pembawa polimer, dan memastikan keterserakan dan kestabilan produk. Selain itu, penyemperit skru berkembar mempunyai ketepatan kawalan suhu yang baik, kebolehsuaian yang kuat kepada bahan mentah, dan boleh menyesuaikan diri dengan pemprosesan pelbagai jenis, jumlah pengisian yang berbeza bagi masterbatch pengisi, dan mempunyai kecekapan pengeluaran yang tinggi dan penggunaan tenaga yang rendah.
2.2 Prinsip Kerja Granulasi Penyemperitan Masterbatch Pengisi
Proses granulasi penyemperitan masterbatch pengisi adalah proses fizikal dan kimia yang kompleks, yang melibatkan interaksi pelbagai faktor seperti suhu, tekanan, daya ricih dan masa. Prinsip kerja dan aliran proses khusus adalah seperti berikut:
Pertama, raw material pretreatment. The raw materials of filler masterbatch (pengisi bukan organik, damar pembawa, bahan tambahan) need to be pretreated to ensure the quality of the final product. The specific steps include: 1) Drying treatment: Inorganic fillers (seperti CaCO3, talkum) are usually hydrophilic and contain a certain amount of moisture. Jika kandungan lembapan terlalu tinggi, it will affect the mixing effect and dispersibility of the materials, and even cause bubbles in the extruded masterbatch. Oleh itu, the fillers need to be dried in a dryer (such as a hot air dryer, a vacuum dryer) to reduce the moisture content to below 0.5%. 2) Crushing and sieving: The carrier resin (seperti PE, PP) is crushed into small particles or powder with a particle size of 20-40 mesh, which is conducive to uniform mixing with fillers and additives. Inorganic fillers are also sieved to remove impurities and large particles, ensuring the fineness and uniformity of fillers. 3) Pracampuran: Mengikut nisbah formula, the dried fillers, carrier resin particles and additives (penyebar, penyerasi, pelincir, dll.) are put into a high-speed mixer for premixing. Kelajuan pencampuran secara amnya 800-1200 rpm, and the mixing time is 5-10 minit. The purpose of premixing is to make the additives evenly adhere to the surface of fillers and carrier resin, improve the compatibility between fillers and carrier, and lay a foundation for subsequent extrusion mixing. The dispersant is a key additive in premixing, which can form a protective film on the surface of the filler, reduce the surface energy of the filler, prevent the filler from agglomerating, and improve the dispersibility of the filler in the carrier resin.
Kedua, feeding and conveying. Campuran pracampuran dihantar ke corong suapan penyemperit skru berkembar melalui penyuap skru atau penyuap tali pinggang. The feeding speed needs to be uniform and stable, which is matched with the screw speed and extrusion speed of the extruder, to ensure that the materials enter the extrusion cavity stably and avoid material accumulation or insufficient feeding. Peranti penyusuan penyemperit biasanya dilengkapi dengan fungsi peraturan kelajuan penukaran frekuensi, which can adjust the feeding speed according to the actual production situation.
Ketiga, lebur, mencampur dan menggunting. Bahan-bahan yang memasuki rongga penyemperitan penyemperit skru berkembar ditolak ke hadapan secara berterusan oleh skru berputar. Rongga penyemperitan terdiri daripada skru dan tong, dan isipadu rongga penyemperitan berkurangan secara beransur-ansur sepanjang arah paksi. Apabila skru berputar, bahan secara beransur-ansur dimampatkan di bawah tindakan skru dan tong, dan tekanan dalam rongga penyemperitan meningkat secara beransur-ansur (generally 3-15MPa). Pada masa yang sama, bahan tertakluk kepada daya ricih yang kuat dan daya geseran yang dihasilkan oleh pergerakan relatif antara skru dan tong, serta antara penerbangan skru.
The shear force and friction force can fully break the agglomerates of inorganic fillers, make the fillers uniformly dispersed in the melted carrier resin, and promote the fusion and compatibility between the fillers and the carrier. Daya geseran juga boleh menghasilkan sejumlah haba, yang digabungkan dengan pemanasan luaran tong (pemanasan elektrik atau pemanasan wap) to make the carrier resin gradually melt and plasticize. Tong extruder biasanya dibahagikan kepada 3-6 bahagian kawalan suhu (bahagian memberi makan, bahagian lebur, bahagian pencampuran, bahagian menghomogenkan, dll.), and the temperature of each section is precisely controlled according to the type of carrier resin and filler. Contohnya, when processing PE carrier filler masterbatch, the temperature of the feeding section is 80-100℃, the melting section is 120-140℃, the mixing section is 140-150℃, and the homogenizing section is 130-140℃; when processing PP carrier filler masterbatch, the temperature of each section is 20-30℃ higher than that of PE carrier.
Keempat, extrusion and shaping. Yang cair sepenuhnya, bahan bercampur dan tersebar ditolak ke kepala die extruder oleh skru. The die head is equipped with multiple die holes (bilangan dan saiz lubang die ditentukan mengikut saiz zarah masterbatch), and the material is extruded from the die holes at a high speed to form continuous strips of uniform thickness. Suhu kepala die adalah lebih rendah sedikit daripada bahagian penghomogenan, which can prevent the material from decomposing due to excessive temperature and ensure the shaping effect of the strips.
Kelima, cooling and cutting. The extruded strips are sent to a cooling device (such as a water tank, an air-cooled conveyor) for rapid cooling. The cooling temperature is generally 20-30℃, dan masa penyejukan adalah 2-5 minit. Rapid cooling can make the strips solidify quickly, maintain the shape and size of the strips, and avoid deformation. Selepas sejuk, the strips are sent to a granulator for cutting. The granulator is equipped with a rotary knife, which can cut the strips into granular filler masterbatch with uniform size (the particle size is generally 2-5mm, yang boleh diselaraskan mengikut keperluan pelanggan). The speed of the rotary knife is matched with the conveying speed of the strips to ensure that the particle size of the masterbatch is uniform.
Sixth, saringan dan pembungkusan. The cut granular filler masterbatch is sent to a vibrating screen for screening, which can remove unqualified particles (seperti terlalu besar, too small or agglomerated particles) and ensure the uniformity of the product. The qualified masterbatch is then sent to an automatic packaging machine for packaging. The packaging specifications can be adjusted according to customer needs (such as 25kg/bag, 50kg/bag), dan pembungkusan hendaklah dimeterai dan kalis lembapan untuk mengelakkan masterbatch daripada menyerap kelembapan dan menjejaskan kualiti. Selepas pembungkusan, produk disimpan di tempat yang kering, gudang yang sejuk dan berventilasi.
2.3 Faktor Utama Mempengaruhi Kesan Granulasi Penyemperitan Masterbatch Pengisi
Kesan granulasi penyemperitan secara langsung mempengaruhi kualiti masterbatch pengisi. Terdapat banyak faktor yang mempengaruhi kesan granulasi, terutamanya termasuk ciri-ciri bahan mentah, nisbah formula, kesan pracampuran, parameter penyemperitan dan struktur kepala mati. Menguasai faktor utama ini dan membuat pelarasan saintifik boleh memastikan kestabilan kesan granulasi dan konsistensi kualiti produk.
2.3.1 Ciri Bahan Mentah:
Jenis, saiz zarah, moisture content and purity of raw materials have a great impact on the granulation effect. Contohnya, the particle size of inorganic fillers directly affects the dispersibility and fineness of the masterbatch. The finer the particle size of the filler (secara amnya 800-2000 mesh), the better the dispersibility, but the higher the cost and the easier it is to agglomerate; the coarser the particle size, the lower the cost, but the dispersibility is poor, which will affect the appearance and performance of the masterbatch. The moisture content of raw materials (especially fillers) should be controlled below 0.5%; jika kandungan lembapan terlalu tinggi, it will cause bubbles in the masterbatch, affect the density and mechanical properties of the product. Ketulenan bahan mentah juga sangat penting; impurities in raw materials (such as stones, logam, habuk) will not only affect the quality of the masterbatch, tetapi juga memakai skru dan laras penyemperit, malah menyebabkan peralatan tersumbat.
2.3.2 Nisbah Formula:
The formula ratio of filler masterbatch (the ratio of filler, carrier resin and additives) is the key to determining the performance and cost of the product. The filling amount of the filler should be determined according to the performance requirements of the downstream product and the processing capacity of the equipment. Too high filling amount will lead to poor dispersibility, low toughness and poor processing fluidity of the masterbatch; too low filling amount will reduce the cost reduction effect. The type and dosage of additives also need to be reasonably matched. Contohnya, the dispersant dosage is generally 1%-3% of the filler dosage; too little dispersant will lead to poor dispersibility of the filler, and too much dispersant will affect the compatibility between the masterbatch and the downstream plastic products, and reduce the mechanical properties of the products. The compatibilizer is used to improve the compatibility between the filler and the carrier resin; the dosage is generally 0.5%-2%, which can significantly improve the dispersibility and mechanical properties of the masterbatch. The lubricant is used to reduce the friction between the materials and the screw, barrel and die head, improve the processing fluidity, and prevent the materials from sticking to the equipment; the dosage is generally 0.3%-1%.
2.3.3 Kesan Pracampuran:
Premixing is the foundation of extrusion granulation. The uniformity of premixing directly affects the dispersibility of the filler in the carrier resin. Jika pengadunan awal tidak sekata, the additives cannot be uniformly adhered to the surface of the filler and carrier, resulting in local agglomeration of the filler, uneven mixing of the materials during extrusion, and poor quality of the masterbatch. Untuk memastikan kesan pracampuran, adalah perlu untuk mengawal kelajuan pencampuran, masa pencampuran dan suhu pencampuran. Kelajuan pencampuran secara amnya 800-1200 rpm, masa mengadun ialah 5-10 minit, dan suhu pencampuran dikawal pada 40-60 ℃ (appropriate temperature can improve the adhesion of additives and promote uniform mixing).
2.3.4 Parameter Penyemperitan:
Extrusion parameters are the most important factors affecting the granulation effect, terutamanya termasuk kelajuan skru, suhu penyemperitan dan tekanan penyemperitan.
- Kelajuan Skru: The screw speed generally ranges from 150 kepada 600 rpm. Semakin tinggi kelajuan skru, semakin besar daya ricih dan daya geseran yang diterima oleh bahan, the better the mixing and dispersing effect of the filler, dan semakin tinggi kecekapan pengeluaran. Namun begitu, jika kelajuan skru terlalu tinggi, masa tinggal bahan dalam rongga penyemperitan terlalu singkat, resulting in incomplete melting of the carrier resin, insufficient mixing of the materials, and uneven particle size of the masterbatch; jika kelajuan skru terlalu rendah, daya ricih dan daya geseran tidak mencukupi, the filler cannot be fully dispersed, dan kecekapan pengeluaran adalah rendah. The screw speed should be adjusted according to the filling amount and type of filler masterbatch—for high-filling masterbatch, a higher screw speed is needed to ensure sufficient shearing and mixing.
- Suhu Penyemperitan: The extrusion temperature is divided into multiple sections (bahagian memberi makan, bahagian lebur, bahagian pencampuran, bahagian menghomogenkan, bahagian kepala die), and the temperature of each section needs to be precisely controlled according to the type of carrier resin and filler. Suhu bahagian penyusuan lebih rendah (slightly higher than the melting point of the carrier resin), yang terutamanya untuk mengelakkan bahan daripada mengelupas dan memastikan penyusuan lancar; suhu bahagian lebur adalah sederhana, which is mainly to promote the melting and plasticization of the carrier resin; suhu bahagian adunan lebih tinggi, yang terutamanya untuk meningkatkan kesan ricih dan pencampuran, and promote the uniform dispersion of the filler; suhu bahagian penghomogenan adalah lebih rendah sedikit daripada bahagian adunan, yang terutamanya untuk memastikan suhu seragam dan kelikatan bahan, dan mengelakkan penguraian haba; suhu bahagian kepala die adalah lebih rendah sedikit daripada bahagian penghomogenan, which is to ensure the shaping effect of the strips.
- Tekanan Penyemperitan: The extrusion pressure is generally 3-15MPa. The pressure in the extrusion cavity is mainly determined by the compression ratio of the screw, the die hole size and the screw speed. The higher the extrusion pressure, the better the mixing and dispersing effect of the materials, and the denser the masterbatch particles. Namun begitu, if the pressure is too high, it will increase the energy consumption and wear of the equipment, and even cause the die head to block; if the pressure is too low, the materials cannot be fully compressed and mixed, the masterbatch particles are loose, and the performance is unstable.
2.3.5 Die Head Structure:
The die head structure mainly includes the number, shape and size of die holes. The shape of the die hole determines the cross-sectional shape of the extruded strips (such as circular, square), and the size of the die hole determines the initial diameter of the strips and the final particle size of the masterbatch. The smaller the die hole size, the greater the extrusion pressure, the better the mixing and dispersing effect, but the production capacity will be reduced; the larger the die hole size, the lower the extrusion pressure, the lower the production efficiency, but the particle size of the masterbatch is larger. The number of die holes affects the production capacity; the more the number of die holes, the higher the production capacity, but it is necessary to ensure that the pressure distribution is uniform, so as to avoid uneven thickness of the strips and uneven particle size of the masterbatch.
3. Our Extruders: Advantages and Product Series for Filler Masterbatch Production
We have long been engaged in the research, development and production of high-performance extruders and granulation production lines, and have accumulated rich experience in the field of filler masterbatch processing. According to the characteristics of filler masterbatch raw materials (high hardness, poor compatibility, kelikatan yang tinggi) dan keperluan pemprosesan (good dispersibility, uniform particle size, high filling amount), we have developed a series of twin-screw extruders specially suitable for filler masterbatch production. Our extruders have the advantages of high wear resistance, strong shearing force, kawalan suhu yang tepat, stable performance and low operating cost, which can meet the processing needs of various types, jumlah pengisian yang berbeza bagi masterbatch pengisi (CaCO3, talkum, BaSO4, dll.), and help enterprises improve production efficiency, ensure product quality and reduce production costs.
3.1 Main Advantages of Our Extruders for Filler Masterbatch Production
3.1.1 Rintangan Haus yang Tinggi, Hayat Perkhidmatan yang Panjang:
Aiming at the problem that inorganic fillers (seperti CaCO3, talkum) have high hardness and easy to wear the screw and barrel, we adopt high-quality wear-resistant materials and advanced manufacturing technology to ensure the wear resistance of the core components of the extruder. The screw and barrel are made of imported wear-resistant alloy steel (seperti 38CrMoAlA), and after nitriding treatment or bimetallic composite treatment, the surface hardness can reach ≥65 HRC, which has extremely strong wear resistance and corrosion resistance, and can effectively resist the wear caused by the friction between the high-hardness filler and the components. This greatly extends the service life of the screw and barrel, reduces the frequency of component replacement, and reduces the maintenance cost of the equipment. Selain itu, we also provide professional wear detection services for the screw and barrel. Our technical team will regularly detect the wear degree of the screw and barrel for customers, issue a detailed wear report, and put forward targeted replacement and maintenance suggestions, ensuring that customers only replace components when necessary, avoiding unnecessary waste.
3.1.2 Strong Shearing and Mixing Capacity, Excellent Dispersibility:
The key to filler masterbatch production is to ensure the uniform dispersion of fillers. Our twin-screw extruders adopt an intermeshing co-rotating twin-screw structure, dengan pic skru yang munasabah, reka bentuk nisbah plumbum dan mampatan. Intermeshing dan berputar skru berkembar boleh menghasilkan daya ricih yang kuat dan daya menguli, yang boleh memecahkan sepenuhnya aglomerat pengisi bukan organik, make the fillers uniformly dispersed in the melted carrier resin, and ensure the dispersibility of the masterbatch. The screw is designed with a modular structure, and different screw elements (seperti menyampaikan unsur, mencampurkan unsur, elemen ricih) can be freely combined according to the type and filling amount of filler masterbatch, so as to adjust the shear force and mixing effect, and achieve the best processing effect. Contohnya, when processing high-filling CaCO3 masterbatch, we can configure more shearing elements to enhance the shearing effect and ensure the uniform dispersion of the filler; when processing talc masterbatch which requires high mixing uniformity, we can configure more mixing elements to improve the mixing effect.
3.1.3 Kawalan Suhu yang Tepat, Stable Performance:
Our extruders adopt advanced intelligent temperature control systems, which can realize precise control of the temperature of each section of the barrel and the die head. The temperature control accuracy can reach ±1℃, which can ensure that the carrier resin is fully melted without thermal decomposition, and the additives are not decomposed, ensuring the stability of the product performance. Sistem kawalan suhu dilengkapi dengan fungsi pemantauan dan penggera masa nyata. If the temperature of any section exceeds the set range, sistem akan mengeluarkan gesaan penggera tepat pada masanya, and even automatically adjust the heating power or shut down the equipment if necessary, to avoid equipment failure and product quality problems. Selain itu, the extruder is equipped with a high-precision pressure sensor, which can monitor the extrusion pressure in real time. If the pressure is too high or too low, the system will adjust the screw speed or feeding speed automatically, ensuring the stability of the extrusion process.
3.1.4 Julat Aplikasi yang Luas, Strong Flexibility:
Our extruder series can adapt to the processing needs of various types of filler masterbatch, including CaCO3 filler masterbatch, masterbatch pengisi talkum, BaSO4 filler masterbatch, dan kumpulan induk pengisi khas lain. The filling amount can be adjusted from 30% kepada 80%, which can meet the different cost and performance requirements of customers. The modular design of the extruder (skru, tong, kepala mati, dll.) makes the replacement of components more convenient and quick. When customers need to adjust the product type or filling amount, they only need to replace the corresponding components, tanpa menggantikan keseluruhan peralatan, which reduces the cost of equipment transformation and improves the flexibility and adaptability of the equipment. Selain itu, our extruders can also be matched with different auxiliary equipment (such as high-speed mixers, pengering, penyejuk, granulator, screening machines, packaging machines) to form a complete automatic granulation production line, merealisasikan pengeluaran berterusan daripada prarawatan bahan mentah kepada pembungkusan produk.
3.1.5 Kecekapan Pengeluaran Tinggi, Low Energy Consumption:
Our twin-screw extruders have high production efficiency, which is much higher than that of single-screw extruders. The production capacity of our extruders ranges from 100kg/h to 3000kg/h, which can meet the production needs of different scales of enterprises (kecil, medium and large). The high-torque drive system and optimized screw design of the extruder can effectively improve the conveying capacity and plasticization efficiency of materials, reducing the residence time of materials in the extrusion cavity and improving production efficiency. Pada masa yang sama, the extruder adopts an energy-saving design, such as a high-efficiency motor, a heat recovery device, dll., which can reduce the unit energy consumption by 15%-25% berbanding dengan penyemperit biasa, helping enterprises reduce production costs.
3.1.6 Operasi dan Penyelenggaraan yang Mudah:
Our extruders adopt a PLC intelligent control system and a touch screen operation interface, yang mudah dan intuitif, mudah dikendalikan. Sistem ini boleh menyimpan berbilang set formula produk dan parameter pemprosesan. When customers produce different types of filler masterbatch, they only need to call the corresponding formula and parameters, tanpa penyahpepijatan berulang, which saves time and improves production efficiency. The modular design of the equipment makes the maintenance more convenient. The screw, tong, die head and other components can be disassembled and assembled quickly, yang mengurangkan masa penyelenggaraan dan intensiti buruh. Our after-sales service team will provide professional installation, perkhidmatan pentauliahan dan latihan untuk pelanggan, memastikan pelanggan dapat menggunakan peralatan dengan lancar.
3.2 Our Extruder Product Series and Their Adaptation to Filler Masterbatch
In order to meet the diverse production needs of filler masterbatch enterprises of different scales and product types, we have launched a full range of twin-screw extruder products, termasuk siri HTS BASIC, Siri HTS PLUS, Siri HTS SUPER, Siri ZTE dan siri HTE. Each series has its own characteristics and targeted adaptation scenarios, which can be selected by customers according to their own production scale, jenis produk, budget and other factors.
3.2.1 HTS BASIC Series Extruders: Cost-Effective Choice for Medium and Small-Scale Enterprises.
The HTS BASIC series extruders are a cost-effective product series independently developed by us, which are specially designed for filler masterbatch processing enterprises with medium and small production scales or initial entry into the industry. This series of extruders uses medium-torque gearboxes from leading European manufacturers, which have the advantages of stable performance, low noise, high efficiency and long service life. The medium-torque design can meet the processing needs of most common filler masterbatch (such as low-to-medium filling CaCO3 masterbatch, PE/PP carrier masterbatch), and at the same time, it has a reasonable price, which can help enterprises reduce the initial investment cost.
Dari segi reka bentuk struktur, the HTS BASIC series extruders adopt a twin-screw parallel structure, with a screw diameter ranging from 30mm to 65mm, and a compression ratio of 4~8, which can be adjusted according to the type and filling amount of filler masterbatch. Tong diperbuat daripada keluli aloi tahan haus dengan rawatan nitriding, dan skru diperbuat daripada keluli aloi tahan haus dan tahan kakisan, yang mempunyai rintangan haus yang baik. Extruder dilengkapi dengan sistem kawalan PLC dan antara muka operasi skrin sentuh, yang boleh merealisasikan pemakanan automatik, kawalan suhu automatik, kawalan tekanan automatik dan pemotongan automatik, dan mudah dan mudah dikendalikan.
Kapasiti pengeluaran penyemperit siri HTS BASIC berjulat dari 100kg/j hingga 500kg/j, which is suitable for medium and small-sized filler masterbatch processing enterprises that mainly produce common filler masterbatch (such as CaCO3 masterbatch for plastic films, woven bags). Salah satu kelebihan terbesar siri ini ialah ia boleh memberikan pilihan yang fleksibel melalui kombinasi konfigurasi yang berbeza. Pelanggan boleh memilih elemen skru yang berbeza, kepala mati, feeding devices, drying devices and post-processing equipment according to their own product types, production capacity and budget, supaya membentuk barisan pengeluaran yang sesuai untuk keperluan mereka sendiri.
3.2.2 HTS PLUS Series Extruders: High-Performance Choice for Engineering Plastic and Filler Masterbatch.
The HTS PLUS series extruders adopt high-torque gearboxes independently developed and manufactured by us, which have stronger torque and load-bearing capacity than the HTS BASIC series. This series of extruders is mainly used for the processing of high-performance filler masterbatch, such as high-filling CaCO3 masterbatch (filling amount ≥60%), talc masterbatch, BaSO4 masterbatch, and filler masterbatch for engineering plastics (such as PP, PA, PC).
The HTS PLUS series extruders have a screw diameter ranging from 65mm to 110mm, a compression ratio of 5~10, and a screw speed range of 200~600 rpm. The screw and barrel adopt bimetallic composite treatment, which has higher wear resistance and corrosion resistance, and can adapt to the processing of high-hardness fillers (such as heavy calcium carbonate, talkum) and high-filling materials. The extruder is equipped with an advanced intelligent control system, which can realize precise control of extrusion parameters and real-time monitoring of production data. The production capacity ranges from 500kg/h to 2000kg/h, which is suitable for medium and large-scale filler masterbatch enterprises that pursue high performance and high filling amount.
Selain itu, the HTS PLUS series extruders have a stronger mixing and shearing capacity, which can fully disperse the high-filling fillers in the carrier resin, ensuring the dispersibility and stability of the masterbatch. It is especially suitable for the production of filler masterbatch used in automotive parts, cengkerang perkakas rumah, high-grade plastic films and other high-performance plastic products.
3.2.3 Penyemperit Siri HTS SUPER: Top-End Choice for High-End Filler Masterbatch.
The HTS SUPER series extruders adopt the latest ultra-high torque transmission device independently developed by us. Aiming at the high torque and high speed characteristics of this series, the structural design of each key component of the extruder has been completely optimized, which is our highest-end extruder series, representing the advanced level of China’s extruder development. This series of extruders is mainly used for the processing of high-end, special and high-performance filler masterbatch, such as high-filling BaSO4 masterbatch (for medical plastics, high-grade films), glass fiber reinforced filler masterbatch, flame-retardant filler masterbatch, and filler masterbatch for special engineering plastics.
The HTS SUPER series extruders have a screw diameter ranging from 80mm to 130mm, a compression ratio of 6~12, and a screw speed range of 250~700 rpm. The screw and barrel adopt imported wear-resistant alloy steel and laser cladding technology, which has extremely high wear resistance and corrosion resistance, and can adapt to the processing of various special fillers (such as glass fiber, karbon hitam, barium sulfat) and high-filling materials (filling amount ≥70%). The extruder is equipped with an intelligent PLC + cloud touch screen control system, which can realize remote parameter adjustment, production data monitoring and predictive maintenance of equipment, merealisasikan pengurusan pengeluaran pintar.
Kapasiti pengeluaran penyemperit siri HTS SUPER berjulat dari 1000kg/j hingga 3000kg/j, which is suitable for large-scale high-end filler masterbatch enterprises that pursue high efficiency, high performance and intelligence. This series of extruders has the advantages of high precision, strong customization, multi-function and stable performance, which can meet the most stringent processing requirements of high-end filler masterbatch.
3.2.4 Penyemperit Siri ZTE: Cost-Effective Choice for General Filler Masterbatch.
The ZTE series extruders have excellent cost performance, and their designed parameters are suitable for most filler masterbatch materials (such as low-to-medium filling CaCO3 masterbatch, PE/PP carrier masterbatch). This series of extruders adopts a simplified and optimized structure, which reduces the production cost while ensuring the basic performance, and is suitable for small and medium-sized enterprises with limited budget and general product requirements.
The ZTE series extruders have a screw diameter ranging from 30mm to 50mm, a compression ratio of 4~7, and a screw speed range of 150~500 rpm. The production capacity ranges from 50kg/h to 300kg/h, which is suitable for small-scale production of common filler masterbatch. The extruder is easy to operate and maintain, and the after-sales service cost is low, which is a cost-effective choice for small enterprises and individual workshops.
3.2.5 Penyemperit Siri HTE: High-Efficiency and Energy-Saving Choice for Large-Scale Production.
The HTE series extruders combine high performance and high cost performance, and are designed to reduce energy consumption with higher output. This series of extruders adopts a high-efficiency motor, an optimized screw structure and a heat recovery device, which can reduce the unit energy consumption by 20%~25% compared with ordinary extruders, and has higher production efficiency.
The HTE series extruders have a screw diameter ranging from 65mm to 110mm, a compression ratio of 5~9, and a screw speed range of 200~600 rpm. The production capacity ranges from 500kg/h to 2500kg/h, which is suitable for large-scale continuous production of common filler masterbatch (such as CaCO3 masterbatch, talc masterbatch). The extruder is equipped with a precise temperature control system and a stable pressure control system, which can ensure the uniformity and stability of the product quality. It is suitable for large-scale filler masterbatch enterprises that pursue high efficiency, energy saving and cost control.
3.3 Selection Suggestions for Filler Masterbatch Extruders
When selecting extruders for filler masterbatch production, enterprises need to comprehensively consider their own production needs, product types, filling amount, budget and other factors to ensure that the selected equipment can meet the actual production needs and bring maximum economic benefits. The following are some specific selection suggestions:
3.3.1 Determine the Extruder Series According to Product Type and Filling Amount:
Different types and filling amounts of filler masterbatch have different requirements for extruders. Contohnya, if the enterprise mainly produces low-to-medium filling CaCO3 masterbatch (filling amount ≤60%) and common PE/PP carrier masterbatch, the HTS BASIC series or ZTE series extruders are suitable; if the enterprise produces high-filling masterbatch (filling amount ≥60%), talc masterbatch or BaSO4 masterbatch, the HTS PLUS series extruders are recommended; if the enterprise produces high-end, special filler masterbatch (such as glass fiber reinforced masterbatch, masterbatch kalis api), the HTS SUPER series extruders are the best choice; if the enterprise pursues large-scale, energy-saving and high-efficiency production, the HTE series extruders are suitable.
3.3.2 Determine the Production Capacity of the Extruder According to the Production Scale:
Enterprises should select the extruder with appropriate production capacity according to their own production scale and market demand. If the production scale is small (daily output less than 1 ton), the ZTE series or HTS BASIC series extruders with production capacity of 50-300kg/h are suitable; if the production scale is medium (daily output 1-5 tan), the HTS BASIC series or HTS PLUS series extruders with production capacity of 300-1000kg/h are suitable; if the production scale is large (daily output more than 5 tan), it is recommended to choose the HTS PLUS series, HTS SUPER series or HTE series extruders with production capacity of more than 1000kg/h.
3.3.3 Consider the Wear Resistance of the Equipment:
The wear resistance of the screw and barrel is a key factor affecting the service life and operating cost of the extruder. For enterprises that process high-hardness fillers (such as heavy calcium carbonate, talkum) or high-filling masterbatch, it is necessary to select extruders with high wear resistance (such as screw and barrel with bimetallic composite treatment or laser cladding treatment), such as the HTS PLUS series and HTS SUPER series, to reduce the frequency of component replacement and maintenance cost.
3.3.4 Consider the Cost-Effectiveness of the Equipment:
Enterprises should not only pay attention to the initial investment cost of the equipment, but also consider the long-term operating cost (seperti penggunaan tenaga, maintenance cost, spare parts cost). Contohnya, although the initial investment of the HTS SUPER series extruders is high, their wear resistance, stability and production efficiency are better, and the long-term operating cost is lower; the ZTE series extruders have a low initial investment, but their production capacity and wear resistance are limited, which is suitable for enterprises with limited budget and small-scale production.
3.3.5 Pay Attention to the After-Sales Service of the Equipment:
The after-sales service of the equipment is crucial for the normal operation of the production line. Enterprises should select manufacturers with perfect after-sales service systems, which can provide professional installation, pentauliahan, latihan, maintenance and spare parts supply services. We have a professional after-sales service team, which can respond to customer needs in a timely manner (provide solutions within 24 jam) and send technicians to the site for maintenance if necessary, ensuring the normal operation of the production line.
3.3.6 Consider the Flexibility and Expandability of the Equipment:
With the changes of market demand, enterprises may need to adjust their product types and filling amounts. Oleh itu, when selecting extruders, enterprises should consider the flexibility and expandability of the equipment. Our extruders adopt a modular design, which can be freely combined and upgraded according to the needs of enterprises, improving the flexibility and expandability of the equipment, and reducing the cost of equipment transformation.
4. Application Fields and Usage Methods of Filler Masterbatch
Masterbatch pengisi, sebagai bahan tambahan berfungsi utama dalam pemprosesan plastik, has a wide range of application fields, covering various fields such as plastic packaging, pembinaan, automotif, elektronik, daily necessities and agriculture. Its core role is to reduce the production cost of plastic products while improving or maintaining the basic performance of plastic products. The following will introduce the specific application fields and usage methods of filler masterbatch in detail:
4.1 Application Fields of Filler Masterbatch
Filler masterbatch can be used in the processing of various plastic products, and different types of filler masterbatch have different application focuses. The main application fields are as follows:
4.1.1 Plastic Packaging Industry:
This is the largest application field of filler masterbatch, menyumbang lebih daripada 50% of the total application amount. Filler masterbatch is widely used in the production of plastic films, beg plastik, woven bags, tali pinggang pembungkusan, packaging containers and other packaging products.
- Plastic Films: Including plastic thin films, thick films, stretch films, greenhouse films, dll. Masterbatch pengisi yang digunakan untuk filem plastik adalah masterbatch pengisi kalsium karbonat ringan atau masterbatch pengisi barium sulfat., yang memerlukan keterserakan yang baik, kehalusan yang tinggi dan tiada kekotoran, untuk memastikan filem yang ditiup tidak mempunyai tompok putih, bintik hitam atau lubang jarum, dan mengekalkan ketelusan yang baik, keliatan dan kekuatan tegangan. Menambah jumlah masterbatch pengisi yang sesuai bukan sahaja dapat mengurangkan kos pengeluaran filem, tetapi juga meningkatkan ketegaran, rintangan haba dan kestabilan dimensi filem, dan mengurangkan kadar pengecutan filem. Contohnya, dalam pengeluaran beg membeli-belah plastik, menambah 1%-3% masterbatch pengisi CaCO3 boleh mengurangkan kos dengan 5%-10% tanpa menjejaskan keliatan dan kapasiti galas beban beg.
- Beg Plastik: Termasuk beg membeli belah, beg rompi, beg sampah, beg pembungkusan makanan, dll. Masterbatch pengisi yang digunakan untuk beg plastik terutamanya kumpulan besar pengisi kalsium karbonat berat, yang mempunyai kos rendah dan rintangan haus yang baik. Menambah 2%-5% of filler masterbatch can reduce the cost and improve the rigidity and wear resistance of the bags. For garbage bags, adding an appropriate amount of filler masterbatch can also improve the toughness and tear resistance of the bags, making them not easy to break.
- Woven Bags and Packaging Belts: Woven bags are widely used in the packaging of grain, fertilizer, simen, chemical products and other goods; packaging belts are used for the bundling of goods. The filler masterbatch used for woven bags and packaging belts is mainly heavy calcium carbonate filler masterbatch or talc filler masterbatch, which requires high rigidity and wear resistance. Menambah 5%-10% of filler masterbatch can improve the rigidity, tensile strength and wear resistance of woven bags and packaging belts, reduce the cost, and extend the service life of the products.
- Packaging Containers: Including plastic bottles, plastic barrels, plastic boxes, dll. The filler masterbatch used for packaging containers is mainly barium sulfate filler masterbatch or light calcium carbonate filler masterbatch, which requires good transparency and chemical stability. Adding an appropriate amount of filler masterbatch can reduce the cost and improve the rigidity and impact strength of the containers.
4.1.2 Plastic Construction Industry:
Filler masterbatch is widely used in the production of plastic pipes, plastic profiles, plastic sheets, plastic tiles and other construction products.
- Plastic Pipes: Including PVC pipes, Paip PE, PP pipes, dll., which are used for water supply, drainage, gas transmission, cable protection and other fields. The filler masterbatch used for plastic pipes is mainly calcium carbonate filler masterbatch or talc filler masterbatch, which requires high rigidity, heat resistance and pressure resistance. Menambah 5%-15% of filler masterbatch can improve the rigidity, heat distortion temperature and pressure resistance of the pipes, reduce the cost, and prevent the pipes from deforming under high temperature and pressure.
- Plastic Profiles: Including PVC profiles for doors and windows, plastic decorative profiles, dll. The filler masterbatch used for plastic profiles is mainly calcium carbonate filler masterbatch, which requires good weather resistance and impact strength. Menambah 5%-10% of filler masterbatch can improve the rigidity, weather resistance and impact strength of the profiles, reduce the cost, and ensure the service life of the profiles in outdoor environments.
- Plastic Sheets: Including PVC sheets, Lembaran PE, helaian PP, dll., which are used for indoor decoration, pembungkusan, waterproofing and other fields. The filler masterbatch used for plastic sheets is mainly calcium carbonate filler masterbatch or barium sulfate filler masterbatch, which requires good flatness and toughness. Menambah 3%-8% of filler masterbatch can reduce the cost and improve the rigidity and toughness of the sheets.
4.1.3 Plastic Injection Molding Industry:
Filler masterbatch is widely used in the production of various injection molding products, such as plastic daily necessities, plastic toys, plastic parts, plastic shells and so on.
- Plastic Daily Necessities: Including plastic bowls, plastic plates, plastic cups, plastic baskets, plastic buckets and other daily necessities. The filler masterbatch used for these products is mainly calcium carbonate filler masterbatch, which has low cost and good safety. Menambah 2%-5% of filler masterbatch can reduce the cost and improve the rigidity and impact strength of the products, making them not easy to break.
- Plastic Toys: Including various plastic toys for children. The filler masterbatch used for plastic toys is mainly light calcium carbonate filler masterbatch or barium sulfate filler masterbatch, which requires high safety, tidak toksik, good dispersibility and no odor, in line with international toy safety standards (such as EN 71, ASTM F963). The particle size of the filler should be fine (di atas 1250 mesh) to avoid scratching children’s skin and ensure the smoothness of the toy surface. Menambah 1%-3% of light calcium carbonate filler masterbatch can reduce the production cost of toys without affecting the toughness and colorability of the toys; barium sulfate filler masterbatch is suitable for transparent or semi-transparent plastic toys, which can improve the transparency and surface gloss of the toys, making them more beautiful.
- Plastic Parts and Shells: Including plastic parts for home appliances, automotive interior parts, electronic product shells, dll. The filler masterbatch used for these products is mainly talc filler masterbatch or glass fiber reinforced filler masterbatch, which requires high rigidity, heat resistance and impact strength. Contohnya, in the production of automotive interior parts (such as instrument panels, panel pintu), menambah 5%-8% of talc filler masterbatch can improve the rigidity and heat distortion temperature of the parts, reduce the shrinkage rate, and make the parts not easy to deform under high temperature environment in the car; in the production of electronic product shells (such as mobile phone shells, router shells), menambah 3%-5% of glass fiber reinforced filler masterbatch can improve the impact strength and dimensional accuracy of the shells, enhancing the durability of the products.
4.1.4 Automotive Plastic Industry:
With the trend of lightweight and energy saving in the automotive industry, plastic materials are widely used in automotive manufacturing, and filler masterbatch, as an important functional additive, plays a key role in reducing costs and improving performance. The application of filler masterbatch in the automotive plastic industry is mainly concentrated in automotive interior parts, exterior parts and functional parts.
- Automotive Interior Parts: Including instrument panels, panel pintu, seat cushions, armrests, dll. These parts have high requirements on rigidity, rintangan haba, low odor and environmental protection. Talc filler masterbatch and calcium carbonate filler masterbatch are the most commonly used products. Talc filler masterbatch can significantly improve the rigidity and heat resistance of polypropylene (PP) bahan, making the interior parts have good dimensional stability; calcium carbonate filler masterbatch has the advantages of low cost and good processing fluidity, which can reduce the production cost of interior parts. Contohnya, menambah 6%-10% of talc filler masterbatch to PP instrument panels can improve the heat distortion temperature by 15-25℃, and reduce the production cost by 8%-12%.
- Automotive Exterior Parts: Including bumpers, spatbor, door handles, dll. These parts are exposed to the outdoor environment for a long time, so they have high requirements on weather resistance, impact strength and UV resistance. The filler masterbatch used for exterior parts is mainly talc filler masterbatch or barium sulfate filler masterbatch, which is usually compounded with weather-resistant additives. Menambah 4%-7% of talc filler masterbatch can improve the impact strength and rigidity of the exterior parts, enhance their resistance to external impact; barium sulfate filler masterbatch can improve the weather resistance and color retention of the exterior parts, making them not easy to fade and aging under the action of sunlight and rain.
- Automotive Functional Parts: Including air intake pipes, cooling system parts, battery casings, dll. These parts have high requirements on heat resistance, chemical resistance and mechanical properties. The filler masterbatch used for functional parts is mainly glass fiber reinforced filler masterbatch or special mineral filler masterbatch. Contohnya, menambah 10%-15% of glass fiber reinforced filler masterbatch to the air intake pipe can improve the heat resistance and pressure resistance of the pipe, ensuring its normal operation under high temperature and high pressure; adding barium sulfate filler masterbatch to the battery casing can improve the radiation resistance and chemical stability of the casing, ensuring the safety of the battery.
4.1.5 Electronic and Electrical Plastic Industry:
Electronic and electrical products have high requirements on the flame retardancy, insulation, dimensional accuracy and heat resistance of plastic materials. Filler masterbatch is widely used in the production of plastic parts of electronic and electrical products, such as wire and cable sheaths, transformer casings, connector housings, dll.
- Wire and Cable Sheaths: The plastic sheaths of wires and cables need to have good insulation, rintangan haus, flame retardancy and weather resistance. The filler masterbatch used for wire and cable sheaths is mainly calcium carbonate filler masterbatch or flame-retardant filler masterbatch. Menambah 3%-6% of calcium carbonate filler masterbatch can improve the wear resistance and rigidity of the sheath, reduce the cost; flame-retardant filler masterbatch (such as magnesium hydroxide, aluminum hydroxide filler masterbatch) can improve the flame retardancy of the sheath, preventing the spread of fire in case of short circuit, ensuring the safety of the circuit.
- Transformer Casings and Connector Housings: These parts need to have good insulation, heat resistance and dimensional accuracy. The filler masterbatch used is mainly talc filler masterbatch or glass fiber reinforced filler masterbatch. Menambah 5%-8% of talc filler masterbatch can improve the heat resistance and dimensional stability of the parts, making them not easy to deform under long-term high temperature operation; glass fiber reinforced filler masterbatch can improve the impact strength and insulation of the parts, ensuring the normal operation of electronic and electrical products.
4.1.6 Agricultural Plastic Industry:
Agricultural plastic products (such as greenhouse films, mulch films, paip pengairan, fertilizer bags) have the characteristics of large dosage, low cost and harsh use environment. Filler masterbatch can effectively reduce the production cost of agricultural plastic products and improve their service life.
- Greenhouse Films and Mulch Films: These products need to have good transparency, keliatan, weather resistance and anti-aging properties. The filler masterbatch used is mainly light calcium carbonate filler masterbatch or barium sulfate filler masterbatch. Menambah 1%-4% of light calcium carbonate filler masterbatch can reduce the cost of the film, improve its toughness and anti-aging properties, and extend the service life of the film; barium sulfate filler masterbatch can improve the transparency and light transmittance of the film, which is conducive to the photosynthesis of crops.
- Irrigation Pipes and Fertilizer Bags: Irrigation pipes need to have good pressure resistance and wear resistance; fertilizer bags need to have good toughness and wear resistance. The filler masterbatch used is mainly heavy calcium carbonate filler masterbatch or talc filler masterbatch. Menambah 5%-10% of heavy calcium carbonate filler masterbatch can improve the pressure resistance and wear resistance of irrigation pipes, reduce the cost; menambah 3%-6% of talc filler masterbatch can improve the toughness and wear resistance of fertilizer bags, making them not easy to break during transportation and use.
4.2 Usage Methods of Filler Masterbatch
The correct use of filler masterbatch is crucial to ensure the quality of plastic products and give full play to the performance of the masterbatch. The usage methods of filler masterbatch mainly include mixing ratio, mixing method, processing parameter adjustment and precautions. The specific operation points are as follows:
4.2.1 Determination of Mixing Ratio:
The mixing ratio of filler masterbatch and base plastic (carrier resin of plastic products) is mainly determined by the filling amount of the masterbatch, the performance requirements of the final product and the processing capacity of the equipment. The general mixing ratio range is 1%-20%, and the specific ratio can be adjusted according to the following principles:
- For plastic products with low performance requirements and high cost control requirements (such as ordinary plastic bags, beg sampah), the mixing ratio can be 5%-20% (using low-to-medium filling calcium carbonate filler masterbatch);
- For plastic products with medium performance requirements (seperti filem plastik, ordinary injection molding parts), the mixing ratio can be 2%-8% (using medium filling calcium carbonate, talc or barium sulfate filler masterbatch);
- For plastic products with high performance requirements (seperti alat ganti automotif, electronic product shells, high-grade films), the mixing ratio can be 1%-5% (using high-filling, high-performance talc, barium sulfate or glass fiber reinforced filler masterbatch);
- For transparent or semi-transparent plastic products (such as plastic bottles, transparent films), the mixing ratio should be controlled at 1%-3%, and barium sulfate or light calcium carbonate filler masterbatch with fine particle size (di atas 1250 mesh) should be selected to avoid affecting the transparency of the products.
4.2.2 Mixing Method:
The mixing of filler masterbatch and base plastic should ensure uniformity, so as to avoid local agglomeration of the masterbatch and affect the performance of the final product. The common mixing methods include dry mixing and wet mixing, among which dry mixing is the most widely used in industrial production.
- Dry Mixing: This method is suitable for most filler masterbatch and base plastic (seperti PE, PP, PVC). The specific steps are: pertama, dry the base plastic particles and filler masterbatch to remove moisture (the moisture content should be controlled below 0.5%); then, put the base plastic particles and filler masterbatch into a high-speed mixer according to the determined mixing ratio, and add an appropriate amount of lubricant (jika perlu) to mix uniformly. Kelajuan pencampuran secara amnya 500-800 rpm, and the mixing time is 3-5 minit. Selepas sebati, the mixture can be directly sent to the extruder or injection molding machine for processing. The advantages of dry mixing are simple operation, kecekapan tinggi, low cost and no pollution to the product.
- Wet Mixing: This method is suitable for filler masterbatch with poor dispersibility or base plastic with high viscosity (such as PVC paste). The specific steps are: mix the filler masterbatch with an appropriate amount of solvent (such as plasticizer, solvent oil) to form a paste, then add the paste to the base plastic and stir uniformly, and finally remove the solvent through heating or drying. The advantages of wet mixing are good mixing effect and uniform dispersion of the masterbatch; the disadvantages are complex operation, high cost, and easy residual solvent affecting the product quality. Oleh itu, wet mixing is only used in special cases.
4.2.3 Adjustment of Processing Parameters:
When adding filler masterbatch to plastic processing, the processing parameters (seperti suhu, tekanan, kelajuan skru) need to be properly adjusted according to the type and filling amount of the masterbatch to ensure the smooth progress of processing and the quality of the final product.
- Temperature Adjustment: The addition of filler masterbatch will increase the viscosity of the mixture, so the processing temperature needs to be appropriately increased by 5-15℃ compared with the processing temperature of pure base plastic. Contohnya, when processing PE plastic with calcium carbonate filler masterbatch, the processing temperature can be increased by 5-10℃; when processing PP plastic with talc filler masterbatch, the processing temperature can be increased by 10-15℃. It should be noted that the temperature should not be too high to avoid thermal decomposition of the base plastic and additives.
- Pressure Adjustment: The addition of filler masterbatch will increase the resistance during processing, so the processing pressure (tekanan penyemperitan, injection pressure) needs to be appropriately increased by 10%-20%. Contohnya, when extruding plastic pipes with filler masterbatch, the extrusion pressure can be increased by 10%-15% to ensure the compactness and dimensional accuracy of the pipes; when injecting plastic parts with filler masterbatch, the injection pressure can be increased by 15%-20% to avoid defects such as insufficient filling and shrinkage.
- Screw Speed Adjustment: The screw speed should be adjusted according to the type and filling amount of the masterbatch. For high-filling masterbatch or masterbatch with poor dispersibility, the screw speed can be appropriately increased by 10%-15% to enhance the shear force and mixing effect, ensuring the uniform dispersion of the filler; for low-filling masterbatch or masterbatch with good dispersibility, the screw speed can be kept unchanged or slightly reduced to reduce energy consumption and wear of equipment.
4.2.4 Precautions for Use:
In the process of using filler masterbatch, the following precautions should be paid attention to to avoid affecting the processing effect and product quality:
- Moisture Prevention: Masterbatch pengisi (especially calcium carbonate, talc masterbatch) is easy to absorb moisture, which will cause bubbles, pinholes and other defects in the final product. Oleh itu, the masterbatch should be stored in a dry, gudang yang sejuk dan berventilasi, and should be dried before use (the drying temperature is 80-100℃, and the drying time is 2-4 jam).
- Keserasian: The carrier resin of the filler masterbatch should be consistent with or compatible with the base plastic of the product. Contohnya, PE filler masterbatch should be used with PE base plastic, and PP filler masterbatch should be used with PP base plastic. If the carrier resin is incompatible with the base plastic, it will affect the compatibility between the masterbatch and the base plastic, resulting in poor dispersibility and reduced product performance.
- Uniform Mixing: The filler masterbatch and base plastic must be mixed uniformly. If the mixing is uneven, local agglomeration of the masterbatch will occur, mengakibatkan kecacatan seperti bintik putih, black spots and agglomeration in the product, affecting the appearance and performance of the product.
- Dosage Control: The dosage of filler masterbatch should not exceed the maximum filling amount applicable to the equipment and product performance. Excessive dosage will lead to poor dispersibility, low toughness, poor processing fluidity and other problems of the product; insufficient dosage will not achieve the effect of cost reduction and performance improvement.
- Storage Period: The filler masterbatch has a certain storage period (secara amnya 6-12 bulan). If the storage period is exceeded, the masterbatch may absorb moisture, agglomerate or the performance of additives may degrade, affecting the use effect. Oleh itu, the masterbatch should be used within the storage period.
5. Common Problems and Solutions in Filler Masterbatch Production
In the production process of filler masterbatch, due to the influence of raw materials, formula, processing equipment and processing parameters, various problems may occur, which affect the quality and production efficiency of the masterbatch. This chapter will summarize the common problems in filler masterbatch production, analyze their causes, and put forward targeted solutions to help enterprises solve production pain points and improve product quality stability.
5.1 Common Quality Problems of Filler Masterbatch and Their Solutions
5.1.1 Poor Dispersibility of Filler Masterbatch:
This is the most common quality problem in filler masterbatch production. The main manifestations are: the masterbatch has agglomeration, and after mixing with the base plastic, white spots, black spots or agglomeration appear in the final product, which affects the appearance and performance of the product.
Punca: 1) The particle size of the inorganic filler is too large or uneven, and the agglomerates are not broken during premixing; 2) The dosage of dispersant is insufficient or the type of dispersant is inappropriate, which cannot effectively prevent the agglomeration of the filler; 3) The premixing effect is poor, and the filler, carrier resin and additives are not mixed uniformly; 4) The shear force of the extruder is insufficient, and the agglomerates of the filler cannot be fully broken during extrusion; 5) The processing temperature is too low, and the carrier resin is not fully melted, which affects the dispersion of the filler.
Penyelesaian: 1) Select inorganic fillers with fine and uniform particle size (secara amnya 800-2000 mesh), and sieve the fillers before use to remove large particles and agglomerates; 2) Increase the dosage of dispersant appropriately (within the range of 1%-3% of the filler dosage) or replace with a dispersant compatible with the filler and carrier resin; 3) Optimize the premixing process, increase the mixing speed (800-1200 rpm) and mixing time (5-10 minit), and control the mixing temperature at 40-60℃ to improve the premixing uniformity; 4) Adjust the screw structure of the extruder, increase the number of shearing elements, or increase the screw speed to enhance the shear force; 5) Appropriately increase the processing temperature of the extruder to ensure that the carrier resin is fully melted, which is conducive to the dispersion of the filler.
5.1.2 Uneven Particle Size of Filler Masterbatch:
The main manifestations are: the particle size of the masterbatch varies greatly, some particles are too large, some are too small, and there are more powdery materials, which affects the fluidity of the masterbatch and the uniformity of mixing with the base plastic.
Punca: 1) The size of the die hole of the extruder die head is uneven or blocked; 2) The extrusion speed and the cutting speed of the granulator are not matched; 3) The cooling effect is poor, and the strips are not fully solidified before cutting, resulting in uneven cutting; 4) The viscosity of the mixture is uneven, and the extrusion speed of the strips is inconsistent.
Penyelesaian: 1) Clean the die head regularly, check and replace the die plate with uneven die holes, ensure that the size of each die hole is consistent; 2) Adjust the extrusion speed and the cutting speed of the granulator to make them matched (the cutting speed should be slightly higher than the extrusion speed of the strips); 3) Optimize the cooling process, increase the cooling water flow or extend the cooling time, ensure that the strips are fully solidified (the surface temperature of the strips after cooling is 20-30℃); 4) Adjust the formula ratio and processing parameters to ensure the uniform viscosity of the mixture, and avoid the inconsistency of the extrusion speed of the strips.
5.1.3 Low Melting Index of Filler Masterbatch
The main manifestations are: the fluidity of the masterbatch is poor, it is difficult to mix with the base plastic during processing, and the processing efficiency is low, which even leads to equipment blockage.
Punca:
- The filling amount of the filler is too high, which increases the viscosity of the masterbatch and reduces the fluidity;
- The type of carrier resin is inappropriate (the melting index of the carrier resin is too low);
- The processing temperature is too low, and the carrier resin is not fully melted;
- The dosage of lubricant is insufficient, which increases the friction between the materials and affects the fluidity.
Penyelesaian:
- Reduce the filling amount of the filler appropriately, or select a filler with better dispersibility to improve the fluidity;
- Replace the carrier resin with a higher melting index (contohnya, use PE carrier resin with a melting index of 2-5g/10min for PE filler masterbatch);
- Appropriately increase the processing temperature of the extruder to ensure that the carrier resin is fully melted, improving the fluidity of the masterbatch;
- Increase the dosage of lubricant appropriately (within the range of 0.3%-1%), reduce the friction between the materials, and improve the fluidity.
5.1.4 Yellowing of Filler Masterbatch
The main manifestations are: the color of the masterbatch turns yellow, which affects the appearance of the final plastic product (especially light-colored products).
Punca:
- The thermal stability of the carrier resin is poor, and thermal decomposition occurs at high processing temperatures;
- The additives (seperti dispersan, pelincir) are decomposed at high temperatures, producing yellow substances;
- The processing temperature is too high, leading to the oxidation and yellowing of the masterbatch;
- The filler contains impurities (such as iron oxide), which causes the masterbatch to turn yellow.
Penyelesaian:
- Select carrier resin with good thermal stability (such as adding antioxidants to the carrier resin);
- Replace additives with good thermal stability, avoid using additives that are easy to decompose at high temperatures;
- Reduce the processing temperature appropriately, avoid the oxidation and decomposition of the masterbatch;
- Screen the filler before use, remove impurities, and select fillers with high purity (such as calcium carbonate with a whiteness of ≥93).
5.1.5 High Moisture Content of Filler Masterbatch
The main manifestations are: buih, pinholes and other defects appear in the final plastic product after the masterbatch is mixed with the base plastic.
Punca:
- The filler is not dried thoroughly, and the moisture content exceeds 0.5%;
- The carrier resin or additives contain moisture;
- The masterbatch absorbs moisture during storage (stored in a humid environment);
- The premixing process is carried out in a humid environment, and the materials absorb moisture.
Penyelesaian:
- Extend the drying time of the filler (drying temperature 80-100℃, drying time 3-5 jam), and detect the moisture content of the filler to ensure that it is below 0.5%;
- Dry the carrier resin and additives before use to remove moisture;
- Store the masterbatch in a dry, gudang yang sejuk dan berventilasi, and seal the packaging to prevent moisture absorption;
- Carry out the premixing process in a dry environment, and avoid the materials absorbing moisture from the air.
5.2 Common Production Equipment Problems and Their Solutions
5.2.1 Extruder Blockage
This is a common equipment problem in filler masterbatch production, which mainly occurs in the feeding section, melting section or die head of the extruder. The main manifestations are: the extrusion speed decreases sharply, the extrusion pressure rises rapidly, and even the equipment stops running.
Punca:
- The moisture content of the materials is too high, and the materials caking during extrusion;
- The processing temperature is too low, and the carrier resin is not fully melted, which accumulates in the extruder barrel;
- The materials contain impurities (such as stones, logam), which block the screw or die head;
- The screw speed is too low, and the materials cannot be pushed forward smoothly, resulting in accumulation;
- The die head is not cleaned regularly, and the residual materials block the die holes.
Penyelesaian:
- Stop the machine immediately, cut off the power supply, and dry the materials thoroughly before restarting;
- Increase the processing temperature of the extruder, and wait for the materials in the barrel to be fully melted before continuing to extrude;
- Disassemble the extruder, remove the impurities blocking the screw or die head, and screen the materials before use to remove impurities;
- Increase the screw speed appropriately to ensure that the materials are pushed forward smoothly;
- Clean the die head regularly (after each production batch) to remove residual materials and avoid die hole blockage.
5.2.2 Severe Wear of Extruder Screw and Barrel
The main manifestations are: the shear force and extrusion pressure of the extruder decrease, the dispersibility of the masterbatch becomes poor, the production efficiency decreases, and the screw and barrel have obvious wear marks.
Punca:
- The filler has high hardness (such as heavy calcium carbonate, talkum) and long-term friction with the screw and barrel;
- The materials contain impurities (such as metals, batu), which accelerate the wear of the screw and barrel;
- The processing temperature is too low, and the materials have high viscosity, which increases the friction between the materials and the screw, tong;
- The screw and barrel are made of materials with poor wear resistance.
Penyelesaian:
- Select extruders with high wear resistance (such as screw and barrel with bimetallic composite treatment or laser cladding treatment), such as our HTS PLUS series and HTS SUPER series extruders;
- Screen the materials before use to remove impurities, and select fillers with appropriate hardness;
- Appropriately increase the processing temperature to reduce the viscosity of the materials and reduce friction;
- Regularly check the wear degree of the screw and barrel, and replace the worn components in time;
- Add an appropriate amount of lubricant to the materials to reduce the friction between the materials and the screw, tong.
5.2.4 Unstable Temperature Control of Extruder
The main manifestations are: the temperature of each section of the extruder fluctuates greatly (exceeding ±1℃), resulting in uneven melting of the materials, poor dispersibility of the masterbatch, and unstable product quality.
Punca:
- The temperature control system of the extruder is faulty (such as temperature sensor damage, heating ring failure);
- The cooling system of the extruder is abnormal (such as insufficient cooling water flow, cooling fan failure);
- The processing environment temperature fluctuates greatly, affecting the temperature control of the extruder;
- The heating power of the extruder is insufficient or uneven.
Penyelesaian:
- Check the temperature control system regularly, replace the damaged temperature sensor and heating ring, and calibrate the temperature control instrument;
- Check the cooling system, ensure sufficient cooling water flow, and repair the faulty cooling fan;
- Control the processing environment temperature (keep it at 20-30℃), avoid large temperature fluctuations;
- Increase the heating power of the extruder appropriately, or check the heating circuit to ensure uniform heating of each section.
6. Conclusion and Outlook
Masterbatch pengisi, as a key functional additive in the plastic processing industry, plays an irreplaceable role in reducing production costs, meningkatkan prestasi produk dan mengoptimumkan kecekapan pemprosesan. With the rapid development of the global plastic industry and the continuous upgrading of downstream product requirements, the filler masterbatch industry is moving towards high performance, kefungsian, high filling amount, perlindungan alam sekitar dan kecerdasan. Extrusion granulation technology, as the core technology of filler masterbatch production, directly determines the quality and competitiveness of the masterbatch. The performance of extruders is the key to ensuring the stable production of high-quality filler masterbatch.
We have developed a full range of twin-screw extruder products (HTS BASIC series, Siri HTS PLUS, Siri HTS SUPER, Siri ZTE, Siri HTE) according to the characteristics of filler masterbatch raw materials and processing requirements. Our extruders have the advantages of high wear resistance, strong shearing and mixing capacity, kawalan suhu yang tepat, wide application range, high production efficiency and low energy consumption, which can meet the processing needs of various types and different filling amounts of filler masterbatch. By providing targeted extruder products and professional processing solutions, we help filler masterbatch manufacturers solve production pain points, improve production efficiency, memastikan kualiti produk, dan memperoleh kelebihan daya saing dalam persaingan pasaran yang sengit.
Looking forward to the future, with the continuous advancement of science and technology and the increasingly strict environmental protection policies, the filler masterbatch industry will face new opportunities and challenges. On the one hand, the demand for high-performance, functional and environmental protection filler masterbatch (such as degradable filler masterbatch, flame-retardant and antistatic filler masterbatch) will continue to grow, which will put higher requirements on extrusion technology and equipment performance; sebaliknya, the intelligence and automation level of production equipment will continue to improve, and intelligent granulation production lines integrating raw material pretreatment, granulasi penyemperitan, screening packaging and data monitoring will become the development trend.
We will continue to focus on the research and development of extrusion technology and equipment, keep up with the development trend of the filler masterbatch industry, continuously optimize product performance, develop more high-performance, energy-saving and intelligent extruders and granulation production lines, and provide more professional and comprehensive solutions for filler masterbatch manufacturers. Pada masa yang sama, we will strengthen cooperation with upstream and downstream enterprises in the industry, promote the technological progress and high-quality development of the filler masterbatch industry, and make greater contributions to the sustainable development of the global plastic industry.