先進的なプラスチックリサイクル造粒: テクノロジー, 設備とZhuoyue押出機ソリューション

環境意識が高まり、資源保護政策が厳しくなる時代に, プラスチックのリサイクルは世界中の産業にとって重要な焦点となっている. さまざまなプラスチックリサイクル技術の中から, 実用化に際立った廃プラスチックリサイクル造粒, 効率的, 廃棄されたプラスチック材料を再利用可能な顆粒に変える経済的に実行可能な方法. これらのリサイクルされた顆粒は、さらに新しいプラスチック製品に加工できます。, バージン素材で作られたものと同等の性能レベルを備えています, 真の資源循環を実現し、プラスチック廃棄物による環境負荷を軽減します。.

卓越, 押出装置の大手メーカー, あらゆる種類の廃プラスチックに対する総合的なリサイクル造粒生産ラインの提供に取り組んでいます。, PPを含む (ポリプロピレン), PE (ポリエチレン), LDPE (低密度ポリエチレン), ペット (ポリエチレンテレフタレート), PS (ポリスチレン), ABS (アクリロニトリルブタジエンスチレン), などなど. 高度な押出技術とプラスチックリサイクルに関する深い専門知識を備えています, Zhuoyue の押出機は、廃プラスチック造粒特有の課題に対応するように調整されています, 効率的に提供する, 省エネ, プラスチックリサイクルに携わる企業向けの高品質ソリューション.

1. 廃プラスチックリサイクル造粒の概要

廃プラスチックリサイクル造粒は、ペットボトルなどのさまざまな形態の廃プラスチックを変換する特殊なプロセスです。, 映画, コンテナ, 生産ラインから出るスクラップ, 使用後のプラスチック廃棄物をユニフォームに, 一連の機械的および熱的処理を経た高品質のプラスチック顆粒. このリサイクル顆粒, 再顆粒または再処理プラスチックペレットとしても知られています, 射出成形に直接使用できます, 押し出し, ブロー成形, 新しい製品を製造するためのその他のプラスチック加工方法, 包装資材や建築部材から自動車部品、日用品まで.

廃プラスチックリサイクル造粒の中心的な価値は、プラスチック廃棄物の処理と資源不足という二重の課題に対処できることにあります。. 埋め立てや焼却などの従来の廃プラスチック処理方法とは異なります。, 深刻な環境リスクをもたらすもの, リサイクル造粒で真の資源循環を実現:

環境保護: プラスチック廃棄物の埋め立ては貴重な土地資源を占有し、土壌や地下水汚染を引き起こす可能性があります。, プラスチックは非生分解性であり、時間の経過とともに有害な物質を放出する可能性があるため. 焼却, 一方で, 有毒ガスを排出する (ダイオキシン類や一酸化炭素など) そして粒子状物質, 大気汚染や地球温暖化に貢献. 造粒をリサイクルすることで、埋め立て地や焼却場に入るプラスチック廃棄物の量を削減します, 環境汚染と炭素排出を最小限に抑える.
資源の保全: プラスチックは再生不可能な化石燃料から得られます (石油や天然ガスなど). 廃プラスチックを再利用可能な顆粒にリサイクルすることにより、, バージンプラスチック材料の需要が減少する, 貴重な化石資源を節約し、バージンプラスチックの生産に伴うエネルギー消費を削減します。. 1 トンのプラスチックをリサイクルすると、最大で 2 トンのプラスチックを節約できると推定されています。 7.4 石油バレルを削減し、炭素排出量を削減する 1.5 トン.
経済的利益: リサイクルされたプラスチック顆粒は、バージンプラスチック材料よりも大幅に安価です, メーカーに大幅なコスト削減を提供. リサイクル事業者向け, 収集のプロセス, 処理, 廃プラスチックを造粒することで安定した収益が得られます, 新たな経済的機会と雇用の創出. さらに, 多くの国や地域が政策上のインセンティブを提供しています (補助金や減税など) プラスチックリサイクル企業向け, リサイクル造粒の経済性をさらに高める.

しかし, リサイクルプラスチック顆粒の品質と最終リサイクル製品の性能は、使用する造粒プロセスと装置に大きく依存します。. 廃プラスチックの種類や純度など, 分別と清掃の効率化, 押出時の温度とせん断の制御, 押出機の設計はすべて、最終製品の品質に大きな影響を与えます。. したがって, シンプルな開発, 便利, 効率的, 省エネ, 環境に優しい, 経済的に実行可能な造粒プロセスは、プラスチックリサイクル業界の研究開発の焦点となっています。.

1.1 再生プラスチック顆粒の主な特徴

再生プラスチック粒の性能は廃プラスチックの種類と密接に関係します, 汚染の程度, そして造粒工程. 一般的に, 高品質の再生顆粒は次の特性を備えている必要があります。:

均一な粒子サイズ: 均一な粒子サイズにより、後続の処理中に安定した供給が保証されます。 (射出成形や押出成形など), 最終製品の均一性と品質の向上. リサイクル顆粒の粒径は通常 2mm ～ 5mm です。, アプリケーション要件に応じて.
低汚染: 汚れなどの汚染物質, ほこり, 金属片, 紙, およびその他の非プラスチック材料は、リサイクルされた顆粒と最終製品の性能に大きな影響を与える可能性があります。. したがって, 汚染レベルを確実に低くするには、廃プラスチックの効果的な分別と洗浄が不可欠です.
可塑性と加工性が良好: リサイクルされた顆粒は、良好な溶融特性と流動性を備えている必要があります。, 加工効率や製品の品質に影響を与えることなく、新しい製品に簡単に加工できます。. これには、プラスチックの分子構造の過度の劣化を避けるために、造粒プロセス中の温度とせん断速度を正確に制御する必要があります。.
安定した機械的特性: 引張強さ, 破断伸び, 衝撃強度, リサイクルされた顆粒のその他の機械的特性は、バージン材料の機械的特性に可能な限り近いものである必要があります。, 最終的なリサイクル製品が要求される性能基準を満たしていることを確認する.
低含水率: リサイクル顆粒の水分含有量が高いと、加工中に最終製品に気泡や亀裂などの欠陥が発生する可能性があります。. したがって, 水分含有量を許容レベルまで下げるために、造粒プロセス中に乾燥ステップが必要になることがよくあります。 (通常は以下 0.5%).

1.2 造粒に使用される一般的な廃プラスチックの種類

ほぼすべての種類の熱可塑性プラスチックはリサイクルおよび粒状化が可能, 一方、熱硬化性プラスチック (溶解して再処理することができないもの) 造粒のリサイクルには適していません. リサイクル造粒に使用される廃プラスチックの最も一般的な種類は次のとおりです。:

PP (ポリプロピレン): 優れた耐薬品性を備え、広く使用されている熱可塑性プラスチック, 機械的特性, 加工性と. 一般廃棄物 PP にはポリバケツが含まれる, コンテナ, キャップ, および生産スクラップ. リサイクルされた PP 顆粒は、プラスチックパイプの製造によく使用されます。, 自動車部品, および梱包材.
PE (ポリエチレン): LDPEに分割 (低密度ポリエチレン) およびHDPE (高密度ポリエチレン). LDPEはプラスチックフィルムに一般的に使用されています, バッグ, そしてボトル, HDPEはバレルに使用されますが、, パイプ, とコンテナ. 再生PE顆粒はプラスチックフィルムの製造に適しています, パイプ, および射出成形品.
ペット (ポリエチレンテレフタレート): 透明な, 飲料ボトルによく使われる硬質プラスチック, 食品包装, および繊維製品. リサイクルPET顆粒はポリエステル繊維の製造に広く使用されています, ペットボトル, および梱包材.
PS (ポリスチレン): リジッドで利用可能 (フォームカップなど, 食品容器, そしてプラスチック製のおもちゃ) そして泡 (EPS, 発泡ポリスチレン) フォーム. リサイクルされたPS顆粒はプラスチックおもちゃの製造に使用できます, 装飾材料, および発泡製品.
ABS (アクリロニトリルブタジエンスチレン): 衝撃強度に優れた高性能プラスチック, 剛性, そして耐熱性. 一般的な廃棄物 ABS には電子製品のプラスチックシェルが含まれます, 自動車部品, とおもちゃ. リサイクルされた ABS 顆粒は電子製品のシェルの製造に使用されます, 自動車部品, および射出成形コンポーネント.

Zhuoyue のリサイクル造粒生産ラインは、上記のすべての廃プラスチックを処理できるように設計されています。, さまざまな種類のプラスチックの特定の加工要件を満たすためにカスタマイズされた装置構成を使用.

2. 廃プラスチックのリサイクル造粒プロセス

廃プラスチックのリサイクル造粒プロセスは、通常、いくつかの重要なステップで構成されます。: 廃プラスチックの収集と分別, クリーニング, 粉砕する, 乾燥, 押出造粒, 冷却, そして切断. 各ステップは、最終的なリサイクル顆粒の品質を確保する上で重要な役割を果たします。. 具体的なプロセスパラメータは廃プラスチックの種類によって異なる場合があります, 汚染の程度, リサイクルされた顆粒の望ましい品質.

2.1 収集と分別

リサイクル造粒プロセスの最初のステップは、廃プラスチックの収集と分別です。. 廃プラスチックはさまざまな場所から収集されます, 家庭も含めて, 産業, 商業施設, そして生産ライン. 多種多様な廃プラスチックと汚染物質の存在により, リサイクル顆粒の品質を確保するには選別が不可欠です.

選別は手動または機械的に行うことができます. 手動による分別は小規模なリサイクル作業に適しており、さまざまな種類のプラスチックを分別する必要があります。, 非プラスチック汚染物質の除去 (金属などの, 紙, ガラス, そして有機廃棄物), プラスチックを色と品質で分類する. 機械選別, 一方で, より効率的で大規模な運用に適しています, 密度分離などの技術を使用 (浮き浮き分離), 磁気分離, 静電分離, さまざまな種類のプラスチックを分離し、汚染物質を除去するための赤外線選別.

異なる種類のプラスチックを混合すると、リサイクルされた顆粒の性能が大幅に低下する可能性があるため、効果的な分別が重要です。. 例えば, PP と PET を混合すると、押出中に相分離が発生する可能性があります, その結果、顆粒の可塑性と機械的特性が低下します。.

2.2 クリーニング

仕分け後, 廃プラスチックは洗浄され、汚れなどの表面汚染物質が除去されます。, ほこり, 油, グリース, 食品残渣, とラベル. 洗浄プロセスには通常、いくつかの手順が含まれます:

前洗浄: 大きな汚染物質の除去 (ラベルなどの, キャップ, そして金属片) ブラッシングによる粗い汚れも, 吹いている, または手動ピッキング.
洗浄: 廃プラスチックを洗浄液に浸す (通常、洗剤またはアルカリを加えた水) 油を取り除くために, グリース, そして食品残渣. 洗浄効果を高めるために、撹拌または超音波洗浄を使用することもできます。.
すすぎ: 洗浄したプラスチックをきれいな水ですすぎ、残った洗浄液や汚染物質を除去します。.
脱水: 遠心分離機を使用して洗浄したプラスチックから余分な水を除去する, 脱水機, または空気乾燥して水分含有量を減らし、その後の加工を容易にします。.

洗浄効果はリサイクル顆粒の品質に直接影響します。. 洗浄が不十分だと顆粒が汚染される可能性があります, 加工性と機械的特性に影響を与える. 例えば, オイルやグリースの残留物は、押出成形中にプラスチック分子間の接着力を低下させる可能性があります。, その結果、顆粒の引張強度が低くなります.

2.3 粉砕

洗浄・脱水後, 廃プラスチックは細かく砕かれます (フレークまたは破片) 粉砕機を使って. 粉砕するとプラスチックの表面積が増加します。, 押出プロセス中の溶融と混合を促進します。. また、プラスチックに埋め込まれている可能性のある残りの小さな汚染物質を除去するのにも役立ちます。.

廃プラスチックの種類や形状によって使用する破砕機の種類が異なります. 一般的なクラッシャーにはジョークラッシャーなどがあります。, ハンマークラッシャー, ブレードクラッシャー, および造粒機. 軟質プラスチック用 (ビニールフィルムや袋など), 通常はブレードクラッシャーが使用されます, 一方、硬質プラスチックの場合 (ペットボトルや容器など), ハンマークラッシャーまたはジョークラッシャーの方が適しています. 粉砕されたプラスチック片のサイズは通常5mmから20mmの間です。, 使用する押出機のタイプと希望する顆粒サイズに応じて.

2.4 乾燥

脱水後も, 粉砕されたプラスチック片にはまだある程度の量の水分が含まれている可能性があります. 含水率が高いと気泡などの不具合が発生する可能性があります, ひび割れ, 押出成形中のリサイクル顆粒の表面品質が低下する. したがって, 粉砕したプラスチック片の水分含有量を許容レベルまで下げるには、乾燥ステップが必要です (通常は以下 0.5%).

一般的な乾燥方法には熱風乾燥が含まれます。, 真空乾燥, そして赤外線乾燥. 熱風乾燥は最も広く使用されている方法です, 熱風を通すことを伴う (80～120℃の温度で) 砕いたプラスチック片を通して水分を蒸発させます. 乾燥時間と温度はプラスチックの種類と初期含水量によって異なります。. 例えば, PET は湿気に弱いため、より高い乾燥温度が必要です。 (120-160℃) 水分を完全に除去するために乾燥時間を長くします。.

2.5 押出造粒

押出造粒は廃プラスチックリサイクル造粒プロセスの中核となるステップです. 溶かすことも伴います, 混合, 乾燥させて粉砕したプラスチック片を押出機を使用して均質化する, 次に、溶融プラスチックをダイを通して押し出し、連続ストランドを形成します。, その後冷却され、均一な顆粒に切断されます。.

押出機はこのステップの重要な機器です, そしてその性能が造粒プロセスの品質と効率を直接決定します。. 廃プラスチックリサイクル造粒に使用される押出機は主に2種類あります。: 二軸押出機と単軸押出機. それぞれのタイプには独自の利点があり、さまざまな種類の廃プラスチックに適しています。, セクションで詳しく説明されているように 3.

押出造粒時, いくつかの重要なプロセスパラメータを正確に制御する必要がある:

温度: The temperature of the extruder barrel and die is critical for melting the plastic and ensuring good mixing and homogenization. Different types of plastics have different melting points, and the barrel temperature is typically set 10-30°C above the melting point of the plastic to ensure complete melting. 例えば, the barrel temperature for PP is usually 170-220°C, while for PET it is 260-280°C. Excessively high temperatures can cause thermal degradation of the plastic, leading to a reduction in the mechanical properties of the recycled granules, while excessively low temperatures can result in incomplete melting and poor mixing.
せん断速度: The shear rate is determined by the screw speed and the screw design. A suitable shear rate helps to homogenize the molten plastic, disperse any remaining contaminants, 顆粒の可塑性を改善します。. しかし, 過度に高いせん断速度は、プラスチックの分子構造の機械的劣化を引き起こす可能性があります, パフォーマンスの低下につながる.
スクリュー速度: スクリュー速度はスループットに影響します, 溶解効率, そしてミキシング品質. スクリュー速度を高くすると処理量は増加しますが、溶解と混合の効率が低下する可能性があります。, スクリュー速度を低くすると混合品質は向上しますが、スループットは低下します。. 最適なスクリュー速度はプラスチックの種類によって異なります, エクストルーダーのタイプ, および望ましい顆粒品質.
押出圧力: 押出圧力は金型の設計によって決まります, スクリュー速度, と材料の粘度. 安定した押出圧力により、均一なストランド形成と一貫した顆粒サイズが保証されます。. 圧力が高すぎると金型の詰まりが発生する可能性があります, 一方、圧力が低すぎるとストランドが不均一になる可能性があります.

2.6 冷却と切断

After extrusion through the die, the continuous plastic strands are cooled to solidify them. Cooling can be done using air cooling or water cooling. Water cooling is more efficient and is widely used in large-scale granulation operations, involving passing the strands through a water tank or water spray to quickly cool them to room temperature. Air cooling is suitable for small-scale operations or for plastics that are sensitive to water (such as some engineering plastics).

Once the strands are cooled and solidified, they are cut into uniform granules using a pelletizer. The pelletizer is typically installed at the exit of the cooling system and can be adjusted to control the length of the granules (usually between 2mm and 5mm). Common types of pelletizers include strand pelletizers, water ring pelletizers, and underwater pelletizers. Strand pelletizers are the most widely used type for waste plastic recycling granulation, as they are simple in structure, 操作が簡単, and suitable for most types of plastics.

2.7 Screening and Packaging

After cutting, the recycled granules are screened using a vibrating screen to remove any oversized or undersized granules, ensuring uniform particle size. The screened granules are then dried again (if necessary) to remove any moisture absorbed during cooling, then packaged into bags or bulk containers for storage and transportation.

Packaging is an important step to prevent contamination and moisture absorption of the recycled granules. The packaging materials should be moisture-proof and clean, and the granules should be stored in a dry, ventilated, and clean warehouse to maintain their quality.

3. Extruder Selection for Waste Plastic Recycling Granulation

前述したように, the extruder is the core equipment in the waste plastic recycling granulation process. The selection of the right extruder depends on the type of waste plastic, the desired granule quality, the production volume, and the budget. 廃プラスチックリサイクル造粒に使用される押出機は主に2種類あります。: 二軸押出機と単軸押出機. Each type has its own unique advantages and is suitable for different applications.

3.1 Twin-screw Extruders for Recycling Granulation

Twin-screw extruders are widely used in the recycling granulation of engineering plastics and plastics with high contamination levels, ABSなどの, PS, PETと. They consist of two parallel screws that rotate in the same direction (共回転) または反対方向 (逆回転) within a barrel. Co-rotating twin-screw extruders are more commonly used in plastic recycling due to their superior mixing and conveying capabilities.

3.1.1 Key Advantages of Twin-screw Extruders

Easy Material Feeding: Twin-screw extruders have a strong conveying capacity, which allows for easy feeding of crushed plastic pieces, even if they are irregular in shape or have a certain amount of contaminants. This reduces the need for pre-processing of the material and improves production efficiency.
Short Material Residence Time: The residence time of the material in the twin-screw extruder is short (通常 1-5 分) compared to single-screw extruders. This helps to avoid thermal degradation of the plastic, especially for heat-sensitive plastics such as PET and ABS, which can degrade easily when exposed to high temperatures for a long time. Short residence time also reduces energy consumption and improves production efficiency.
Excellent Venting Effect: Twin-screw extruders are equipped with venting ports that allow for the removal of moisture, volatile gases, and air from the molten plastic. The meshing part of the screws provides effective mixing, and the self-cleaning function of the venting section ensures that the material can achieve complete surface renewal, allowing for efficient removal of volatile substances. This helps to improve the quality of the recycled granules by reducing the number of bubbles and defects.
Superior Mixing and Plasticizing Effect: The co-rotating twin-screw extruders have strong shear and mixing capabilities, which can effectively homogenize the molten plastic, disperse contaminants, and mix additives (スタビライザーなどの, 抗酸化物質, および着色剤) uniformly. This ensures that the recycled granules have consistent properties and good processability.
Low Specific Power Consumption: Despite their high performance, twin-screw extruders have low specific power consumption (power consumption per unit output), making them more energy-efficient compared to single-screw extruders for certain applications. This helps to reduce operating costs for recycling enterprises.
High Volume Power: Twin-screw extruders have a high volume power (power per unit volume of the barrel), which means they can process a large amount of material in a small space. This makes them suitable for large-scale production operations with limited space.

3.1.2 Suitable Applications for Twin-screw Extruders

Twin-screw extruders are particularly suitable for the recycling granulation of the following plastics:

ABS: A high-performance plastic that is widely used in electronic products, 自動車部品, とおもちゃ. ABS is sensitive to heat and requires short residence time and good mixing, making twin-screw extruders the ideal choice.
PS: Both rigid and foam PS can be recycled using twin-screw extruders. The superior mixing capabilities of twin-screw extruders help to disperse any remaining foam cells and contaminants, ensuring good granule quality.
ペット: PET is highly sensitive to moisture and heat, and requires precise temperature control and short residence time. Twin-screw extruders with good venting and temperature control capabilities are suitable for PET recycling granulation.
エンジニアリングプラスチック: Other engineering plastics such as PC (ポリカーボネート), PA (ポリアミド), and POM (ポリオキシメチレン) can also be recycled using twin-screw extruders, thanks to their superior mixing and plasticizing capabilities.

3.2 Single-screw Extruders for Recycling Granulation

Single-screw extruders are simpler in structure, lower in cost, and easier to maintain compared to twin-screw extruders. They consist of a single screw that rotates within a barrel, conveying and melting the material through friction and shear between the screw and the barrel. Single-screw extruders are widely used in the recycling granulation of general-purpose plastics such as PP, PE, and LDPE.

3.2.1 Key Advantages of Single-screw Extruders

Short Screw Length and Residence Time: Single-screw extruders typically have a shorter screw length compared to twin-screw extruders, resulting in shorter material residence time. This helps to avoid thermal degradation of the plastic, especially for soft plastics such as PE and LDPE, which have lower melting points and are prone to degradation.
Cost-Effective: Waste plastic recycling often involves materials with high levels of contaminants, which can cause significant wear and tear on the extruder screw and barrel. Single-screw extruders are simpler in structure and use less expensive materials, making them more cost-effective to replace and maintain compared to twin-screw extruders. This is particularly important for small and medium-sized recycling enterprises with limited budgets.
Suitable for Soft Plastics: The material conveying efficiency of single-screw extruders depends on the friction performance of the solid material and the viscosity of the melt. Soft plastics such as PP, PE, and LDPE have good friction performance and low melt viscosity, making them ideal for processing with single-screw extruders. These plastics can be conveyed and melted efficiently, ensuring good granule quality.
Simple Operation and Maintenance: Single-screw extruders have a simple structure, with fewer moving parts, making them easy to operate and maintain. This reduces the need for skilled operators and lowers maintenance costs, which is beneficial for small-scale recycling operations.

3.2.2 Suitable Applications for Single-screw Extruders

Single-screw extruders are particularly suitable for the recycling granulation of the following plastics:

PP (ポリプロピレン): PP is a soft plastic with good friction performance and processability, making it ideal for processing with single-screw extruders. Recycled PP granules produced using single-screw extruders have good mechanical properties and can be used in a wide range of applications.
PE (ポリエチレン): Both LDPE and HDPE are suitable for processing with single-screw extruders. LDPE, 特に, is a soft plastic with low melt viscosity, which can be conveyed and melted efficiently by single-screw extruders. Recycled PE granules are widely used in the production of plastic films and pipes.
LDPE (低密度ポリエチレン): LDPE is commonly used in plastic films and bags, which are easy to crush and process. Single-screw extruders are ideal for LDPE recycling granulation, as they can handle the soft material efficiently and cost-effectively.

3.3 Key Factors for Extruder Selection

When selecting an extruder for waste plastic recycling granulation, the following key factors should be considered:

Type of Waste Plastic: As discussed earlier, twin-screw extruders are suitable for engineering plastics (ABS, PS, ペット) and plastics with high contamination levels, while single-screw extruders are suitable for general-purpose plastics (PP, PE, LDPE).
生産量: For large-scale production (more than 500kg/h), twin-screw extruders are more suitable due to their high throughput and efficiency. For small-scale production (less than 200kg/h), single-screw extruders are more cost-effective and practical.
Granule Quality Requirements: If high-quality recycled granules with uniform properties and low contamination are required (such as for automotive parts and electronic products), twin-screw extruders are the better choice due to their superior mixing and plasticizing capabilities. For general-purpose applications (such as plastic films and low-grade injection-molded products), single-screw extruders can meet the requirements at a lower cost.
予算: Twin-screw extruders are more expensive than single-screw extruders, both in terms of initial investment and maintenance costs. したがって, enterprises with limited budgets may prefer single-screw extruders for general-purpose plastic recycling.
エネルギー消費量: For large-scale production, energy consumption is an important consideration. Twin-screw extruders have lower specific power consumption, making them more energy-efficient for high-volume operations. Single-screw extruders may be more energy-efficient for small-scale operations due to their simpler structure.

4. Zhuoyue Extruder Series for Waste Plastic Recycling Granulation

Zhuoyue offers a comprehensive range of extruders specifically designed for waste plastic recycling granulation, including twin-screw extruders and single-screw extruders. The extruder series are tailored to meet the specific needs of different types of waste plastics, production volumes, and granule quality requirements, combining high performance, 効率, 省エネ, and cost-effectiveness. The main extruder series include ZTE series and HTE series, each with unique features and advantages to suit different application scenarios.

4.1 Core Technical Features of Zhuoyue Extruders

All Zhuoyue extruders for waste plastic recycling granulation share a set of core technical features that make them ideal for the harsh conditions of plastic recycling, such as high contamination levels, irregular material shapes, and varying material properties:

Robust Construction: Zhuoyue extruders are built with high-quality materials (such as alloy steel for screws and barrels) to withstand the wear and tear caused by contaminants in waste plastics. The screws and barrels are treated with special surface treatments (such as nitriding and hard chrome plating) to improve their wear resistance and service life.
Precise Temperature Control: The extruders are equipped with advanced temperature control systems, including heating zones and cooling zones, to ensure precise control of the barrel and die temperature. This helps to avoid thermal degradation of the plastic and ensure complete melting and mixing.
Efficient Conveying and Mixing: The screw designs are optimized for waste plastic recycling, with enhanced conveying capacity and mixing capabilities. Twin-screw extruders feature co-rotating screws with optimized flight profiles to ensure superior mixing and homogenization, while single-screw extruders have specially designed screws to improve conveying efficiency for soft plastics.
Excellent Venting Performance: Twin-screw extruders are equipped with multiple venting ports to remove moisture, volatile gases, and air from the molten plastic, ensuring high-quality granules with minimal defects. The self-cleaning function of the venting section ensures efficient venting even with contaminated materials.
省エネ設計: Zhuoyue extruders adopt energy-saving technologies such as variable frequency drives (VFD) and optimized motor configurations to reduce energy consumption. This helps to lower operating costs for recycling enterprises.
Easy Operation and Maintenance: The extruders are designed with user-friendly interfaces and simple structures, making them easy to operate and maintain. The screws and barrels can be easily disassembled for cleaning and replacement, ダウンタイムの削減.
Customizable Configurations: Zhuoyue extruders can be customized with different screw lengths, diameters, and configurations to meet the specific needs of different types of waste plastics and production volumes. 例えば, extruders for PET recycling can be equipped with special drying systems and venting ports to ensure complete moisture removal.

4.2 ZTE Series Extruders

The ZTE series is Zhuoyue’s cost-effective extruder series, designed for small and medium-sized recycling enterprises and general-purpose waste plastic recycling granulation. This series offers excellent cost-performance ratio, with parameters designed to suit most common waste plastics, PPを含む, PE, LDPE, and general-purpose ABS and PS. The ZTE series includes both single-screw and twin-screw extruders, providing flexible options for different applications.

4.2.1 Key Features of ZTE Series Extruders

Excellent Cost-Performance Ratio: The ZTE series is designed to provide reliable performance at a competitive price, making it the ideal choice for enterprises with limited budgets or small-scale production needs. The initial investment and maintenance costs are significantly lower than high-end extruders, while still meeting the basic requirements of waste plastic recycling granulation.
Versatile Parameter Design: The parameters of the ZTE series are designed to suit most common waste plastics, PPを含む, PE, LDPE, ABS, そしてPS. This versatility allows enterprises to process multiple types of waste plastics with a single extruder, improving production flexibility and reducing equipment investment.
Reliable Operation: The ZTE series adopts a reliable standard transmission system and simple structure, ensuring stable operation even in harsh recycling environments. The screws and barrels are designed to handle contaminants in waste plastics, reducing the risk of equipment failure.
Low Maintenance Costs: The simple structure of the ZTE series makes it easy to maintain, with fewer moving parts and lower maintenance requirements. The screws and barrels can be easily replaced when worn, reducing downtime and maintenance costs.
Suitable for Small to Medium-Scale Production: The ZTE series is available in a range of sizes, with throughputs ranging from 50kg/h to 500kg/h, making it suitable for small to medium-scale recycling operations.

4.2.2 ZTE Series Model Parameters

The ZTE series includes both single-screw and twin-screw extruders, with parameters tailored to different types of waste plastics. The following table details the parameters of the ZTE series twin-screw extruders, suitable for ABS, PS, and PET recycling granulation:

モデル	比トルク（N.m/Cm3）	主電動機出力（Kw）	Output speed（rpm）	Slot depth ratio D0/Di	Suitable Plastics
25	6	7.5	600	1.55	PS, Small-scale ABS
35	6	18.5	600	1.55	PS, ABS, LDPE
50	6	55	600	1.55/1.68	ABS, PS, ペット (Small-scale)
65	6	110	600	1.55/1.68	ABS, PS, ペット
75	6	160	600	1.55/1.68	ABS, PS, ペット, PP
95	6	300	600	1.55/1.68	ABS, PS, ペット, PP, PE

The ZTE series single-screw extruders are mainly used for PP, PE, and LDPE recycling granulation, with parameters optimized for soft plastics. The screws are designed with enhanced conveying capacity to handle the irregular shapes of crushed plastic films and bottles, ensuring efficient production.

4.2.3 Application Scenarios for ZTE Series

The ZTE series is ideal for the following application scenarios:

Small and medium-sized recycling enterprises with limited budgets.
General-purpose waste plastic recycling, PPを含む, PE, LDPE, ABS, そしてPS.
Production of general-purpose recycled granules for plastic films, low-grade injection-molded products, and construction components.
Enterprises new to plastic recycling, thanks to the easy operation and low maintenance requirements of the ZTE series.

4.3 HTE Series Extruders

The HTE series is Zhuoyue’s mid-range extruder series, designed to bridge the gap between cost-effective extruders (such as ZTE series) and high-end extruders. This series combines high performance with high cost-effectiveness, delivering higher output while reducing energy consumption. The HTE series includes both twin-screw and single-screw extruders, suitable for medium to large-scale waste plastic recycling granulation.

4.3.1 Key Features of HTE Series Extruders

Balanced Performance and Cost-Effectiveness: The HTE series offers higher performance than the ZTE series, including better mixing capabilities, より高いスループット, and more precise temperature control, while maintaining a competitive price. This makes it suitable for enterprises that require higher granule quality but do not want to invest in high-end extruders.
Energy-Saving and High Output: The HTE series is optimized for energy efficiency, with advanced motor configurations and variable frequency drives (VFD) to reduce energy consumption. 同時に, the extruders have higher throughput, allowing for medium to large-scale production (500kg/h to 1000kg/h) with lower energy costs.
Reasonable Torque and Power Configuration: The HTE series has a reasonable torque and power configuration, ensuring stable and efficient production even when processing plastics with high contamination levels or varying properties. The twin-screw extruders have higher torque density, making them suitable for processing engineering plastics such as ABS and PET, while the single-screw extruders are optimized for soft plastics such as PP and PE.
Dual-Speed Options for Partial Models: Some models of the HTE series are equipped with dual-speed options, allowing for flexible adjustment of the screw speed to suit different types of plastics and production requirements. This expands the application range of the extruders, making them suitable for multiple plastic types.
Enhanced Wear Resistance: The screws and barrels of the HTE series are made of high-quality alloy steel and treated with advanced surface treatments to improve their wear resistance, ensuring a long service life even in harsh recycling environments.
Advanced Control System: The HTE series is equipped with advanced PLC control systems, allowing for automatic control of temperature, スクリュー速度, 押出圧力, and other key parameters. This improves the stability and consistency of the granulation process, ensuring uniform granule quality.

4.3.2 HTE Series Model Parameters

The HTE series twin-screw extruders are suitable for ABS, PS, ペット, PP, PE, and LDPE recycling granulation, with parameters optimized for high performance and efficiency. The following table details the specific parameters:

モデル	比トルク（N.m/Cm3）	主電動機出力（Kw）	Output speed（rpm）	Slot depth ratio D0/Di	Suitable Plastics	スループット (kg/h)
25	9	11	600	1.55	PS, ABS, LDPE	50-100
35	9	30	600	1.55	PS, ABS, PE, LDPE	100-200
35	9	45	1000	1.55	PS, ABS, PE, LDPE	200-300
50	9	75	600	1.55/1.68	ABS, PS, ペット, PP	300-500
50	9	110	900	1.55/1.68	ABS, PS, ペット, PP	500-700
65	9	160	600	1.55/1.68	ABS, PS, ペット, PP, PE	700-900
65	9	220	900	1.55/1.68	ABS, PS, ペット, PP, PE	900-1200
75	9	250	600	1.55/1.68	ABS, PS, ペット, PP, PE, LDPE	1200-1500
75	9	315	900	1.55/1.68	ABS, PS, ペット, PP, PE, LDPE	1500-1800
95	9	400	600	1.55/1.68	All common waste plastics	1800-2200

The HTE series single-screw extruders are optimized for PP, PE, and LDPE recycling granulation, with higher throughput and better energy efficiency compared to the ZTE series. They are suitable for medium to large-scale production of recycled granules for plastic films, パイプ, および射出成形品.

4.3.3 Application Scenarios for HTE Series

The HTE series is ideal for the following application scenarios:

Medium to large-scale recycling enterprises with higher granule quality requirements.
Recycling of multiple types of waste plastics, PPを含む, PE, LDPE, ABS, PS, PETと.
Production of high-quality recycled granules for automotive parts, electronic product accessories, and high-grade injection-molded products.
Enterprises that focus on energy efficiency and cost reduction, thanks to the energy-saving design of the HTE series.

4.4 Customized Solutions from Zhuoyue

In addition to the standard ZTE and HTE series, Zhuoyue also provides customized extruder solutions for special waste plastic recycling needs. 例えば:

Customized extruders for high-contamination waste plastics, equipped with enhanced filtering systems to remove contaminants.
Extruders for heat-sensitive plastics such as PET and PC, equipped with special drying systems and low-shear screws to avoid thermal degradation.
Complete recycling granulation production lines, including crushers, dryers, 押出機, ペレタイザー, and screening equipment, to provide a one-stop solution for enterprises.

Zhuoyue’s professional R&D team works closely with customers to understand their specific needs and provide tailored solutions that meet their production requirements and budget.

5. Best Practices for Waste Plastic Recycling Granulation with Zhuoyue Extruders

To ensure the best performance and granule quality when using Zhuoyue extruders for waste plastic recycling granulation, the following best practices are recommended:

5.1 Proper Sorting and Cleaning

Effective sorting and cleaning are essential to reduce the wear and tear on the extruder and ensure high-quality granules. Separate different types of plastics to avoid mixing, and remove non-plastic contaminants (金属などの, 紙, and glass) as much as possible. Thoroughly clean the waste plastics to remove oil, グリース, そして食品残渣, which can affect the mixing and plasticizing effect.

5.2 Optimal Drying

Ensure that the crushed plastic pieces are properly dried to reduce the moisture content to below 0.5%. For moisture-sensitive plastics such as PET, use high-temperature drying (120-160℃) for a sufficient period to ensure complete moisture removal. This helps to avoid bubbles and defects in the recycled granules.

5.3 Precise Process Parameter Control

Adjust the extruder parameters (such as temperature, スクリュー速度, と押出圧力) according to the type of waste plastic. Follow the recommended parameter settings provided by Zhuoyue, and make adjustments based on the actual material properties and granule quality. Avoid excessively high temperatures or shear rates, which can cause plastic degradation.

5.4 Regular Maintenance

Regularly inspect and maintain the extruder to ensure its normal operation. Clean the screws and barrels regularly to remove any accumulated material or contaminants. Check the wear of the screws and barrels, and replace them when necessary. Lubricate the moving parts regularly to reduce friction and extend the service life of the extruder.

5.5 Use of Additives (If Necessary)

For waste plastics with severe degradation or poor performance, consider adding additives such as stabilizers, 抗酸化物質, and plasticizers to improve the quality of the recycled granules. Consult Zhuoyue’s technical team to select the appropriate additives and dosage.

6. 結論

Waste plastic recycling granulation is a critical technology for realizing resource circulation and environmental protection, offering significant economic, 環境, and social benefits. The quality and efficiency of the granulation process depend largely on the extruder used, and selecting the right extruder is essential for the success of a plastic recycling enterprise.

Zhuoyue’s ZTE series and HTE series extruders are specifically designed for waste plastic recycling granulation, combining high performance, 効率, 省エネ, and cost-effectiveness. The ZTE series provides a cost-effective solution for small and medium-sized enterprises and general-purpose plastic recycling, while the HTE series offers balanced performance and cost-effectiveness for medium to large-scale production with higher quality requirements. With robust construction, 正確な温度制御, superior mixing capabilities, and customizable configurations, Zhuoyue extruders can handle all types of waste plastics, from PP and PE to ABS and PET, delivering high-quality recycled granules for a wide range of applications.

As a leader in extrusion technology, Zhuoyue is committed to providing advanced, reliable, and cost-effective solutions for the plastic recycling industry. With professional R&D, high-quality products, and comprehensive after-sales service, Zhuoyue helps enterprises unlock the full potential of waste plastic recycling, contributing to a more sustainable and environmentally friendly future.

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