I-Metering Feeder Loss-In-weight Scale

I-Metering Feeder Loss-In-weight Scale: Precision Feeding for Extrusion Processes

With over 17 years of hands-on experience in plastic extrusion equipment optimization and material handling systems, I’ve worked with 250+ manufacturers across the globe to solve feeding inefficiencies—one of the most common bottlenecks in extrusion production. The Metering Feeder Loss-In-Weight Scale (LIW) and volumetric feeder systems are foundational to consistent extruder performance, directly impacting product quality, material waste, and overall production efficiency. Ngenkathi iziphakeli ze-volumetric zinikeza izixazululo ezibiza izindleko zezinhlelo zokusebenza ezijwayelekile, izilinganiso zokulahlekelwa kwesisindo ziletha ukunemba okudingekayo kwenani eliphezulu, izinqubo ze-tight-tolerance extrusion-ukwenza zombili izinhlelo zibe amathuluzi abalulekile endaweni yesimanje yokucubungula ipulasitiki.

I-Volumetric Feeder: Ukondla Okungabizi kakhulu Kwezinhlelo Zokusebenza Ze-Extrusion Ezijwayelekile

I-volumetric feeder ifanele izixazululo eziningi ze-extruder feeding, inezici zokudla ezingabizi kakhulu futhi ezisebenza kahle kakhulu. Njengesistimu yokudla esetshenziswa kakhulu yezinhlelo zokusebenza ezijwayelekile ze-extrusion, I-volumetric feeder ibhalansisa ukufinyeleleka nokusebenza okuthembekile, ukubenza bafaneleke kubakhiqizi abancane kuya kwabamaphakathi abacubungula izinto ezingabalulekile (isib., inhloso jikelele PE/PP, izinhlanganisela eziqinile ze-PVC) lapho ukulinganisa okunembile kungeyona imfuneko eyinhloko.

Unlike loss-in-weight scales that measure material weight in real-time, volumetric feeders deliver a consistent volume of material to the extruder—controlled by screw rotation speed and screw geometry. This simplicity translates to lower upfront costs (30-50% less than loss-in-weight systems) and minimal maintenance, making volumetric feeders a practical choice for high-volume, low-margin production runs.

Core Design of Volumetric Feeders for Extruder Applications

The volumetric feeder consists of a small twin screw, barrel, and motor Filler Masterbatch Machine Manufacturer engineered for reliable material flow and minimal downtime. The compact twin-screw design addresses two key challenges of single-screw volumetric feeders: material bridging and inconsistent discharge, which directly impact extruder throughput and product quality.

When the material enters the barrel, the screw is simply rotated by the stirring roller, which not only pushes the material to the bottom, but also reduces clogging, making it easier to discharge, saving time and energy, and solving the problem of slow discharging affecting productivity. The intermeshing twin screws create a positive displacement action, ensuring that material is consistently conveyed to the extruder feed throat—even for materials with poor flow characteristics (isib., regrind flakes, pelletized PVC with high filler content).

Key design features of Zhuoyue’s volumetric feeders include:

• Modular Twin-Screw Design: Screws are available in multiple pitch configurations (10mm, 15mm, 20mm) to match material flow properties—shorter pitches for low-flow materials (regrind), longer pitches for free-flowing pellets.
• Variable Speed Motor: IE3 efficiency motors with 0-100 rpm isilawuli sejubane esilungisekayo, okuvumela ukulungiswa kwevolumu okunembile ukuze kufane nokukhishwa kwe-extruder (5-2000 kg/ihora).
• I-Anti-Clogging Stirring Roller: I-roller enyakazayo ehlanganisiwe endaweni yokungena ye-feed hopper ivimbela ukuhlanganisa izinto ezibonakalayo kanye nokugoqa amagundane., ukuqinisekisa ukungena okungaguquguquki kwempahla emgqonyeni we-twin-screw.
• I-Compact Footprint: Idizayinelwe ukuthi ilingane ezindaweni zasembonini eziqinile, ngokukhweza kalula emphinjeni wesiphakeli se-extruder noma izinhlaka zokusekela ezizimele.
• Ukuhlanza Okulula: Ukukhishwa ngokushesha komgqomo nokuhlanganisa izikulufu ukuze kushintshwe izinto ezisheshayo (≤10 imizuzu yezinto eziningi), ukunciphisa isikhathi sokuphumula phakathi kokusebenza kokukhiqiza.

Izinzuzo Eziyinhloko Ze-Volumetric Feeders

1. Izindleko Eziphelele Zobunikazi

Iziphakeli ze-Volumetric zinezindleko zangaphambili eziphansi kakhulu zanoma yiluphi uhlelo lwezimboni lokuphakela, ngokulungiswa okuncane okuqhubekayo (awekho amaseli okulayisha, izinzwa, noma ama-elekthronikhi ayinkimbinkimbi ukuze alinganise). Ukunakekelwa okujwayelekile kukhawulelwe ekugcotshisweni kwezingxenye ezihambayo kanye nokuhlolwa kwesikulufu/imigqomo ngezikhathi ezithile—imisebenzi engenziwa amaqembu okulungisa angaphakathi ngaphandle kokuqeqeshwa okukhethekile..

2. Ukusebenza Kakhulu Kwezinto Ezijwayelekile

Okwamapellets ahamba mahhala (isib., intombi PE/PP) kanye nezicelo zokuhlanganisa ezingabalulekile, ama-volumetric feeders ayalethwa 95% ukusebenza kahle kokudla (izinto ezilethiwe vs. impahla hoppered), nokuvumelana kokukhipha okungu-±2%—okwanele izinhlelo zokusebenza ezifana nokukhishwa kwepayipi lenjongo evamile, ukukhiqizwa kweshidi, noma iphrofayili extrusion lapho ukubekezelelana okuqinile kungadingeki.

3. Easy Operation & Ukuqeqeshwa

Nge-interface yokulawula elula (ukudayela okusheshayo kwe-analog noma isilawuli esiyisisekelo sedijithali), iziphakeli ze-volumetric zidinga ukuqeqeshwa okuncane ko-opharetha—ngokuvamile 1-2 amahora okufundisa ngezandla. This is a critical advantage for manufacturers with high operator turnover or limited technical staff.

4. Compatibility with Wide Range of Materials

Zhuoyue’s volumetric feeders handle a broad range of plastic materials, including:

• Virgin pellets (PE, PP, I-PVC, ABS, PS)
• Regrind flakes/pellets (kuya ku 50% regrind content)
• Filled compounds (kuya ku 40% calcium carbonate/talc filler)
• Color masterbatches (low to medium loading rates)

Loss-In-Weight (LIW) Scale Metering Feeder: Precision Feeding for Critical Applications

While volumetric feeders excel in cost-effective, standard applications, Filler Masterbatch Machine Factory Loss-In-Weight (LIW) scale metering feeders are engineered for precision dosing—essential for high-value extrusion processes where material consistency directly impacts product performance, ukuhambisana nokulawula, or production yield. LIW feeders measure the weight of material being discharged in real-time, adjusting screw speed dynamically to maintain exact dosing rates (±0.1% accuracy), making them the gold standard for medical, ezezimoto, and aerospace plastic processing.

How Loss-In-Weight Scale Metering Feeders Work

LIW feeders operate on the principle of continuous weight measurement:

1. The feeder hopper, twin-screw assembly, and drive system are mounted on high-precision load cells (accuracy ±0.01% of full scale).
2. As material is discharged to the extruder, the load cells measure the rate of weight loss in the hopper.
3. A PLC (Programmable Logic Controller) compares the actual weight loss rate to the target setpoint (isib., 50 kg/ihora).
4. The PLC adjusts the twin-screw speed in real-time to correct any deviation from the target rate—slowing the screw if discharge is too fast, speeding it up if discharge is too slow.
5. When the hopper level reaches a low threshold, an automated refill system (pneumatic conveyor or auger) refills the hopper—with the PLC accounting for refill weight to maintain continuous, accurate dosing.

This closed-loop control system ensures that the extruder receives a consistent weight of material per unit time, regardless of material flow characteristics (isib., bulk density variations in regrind, humidity-induced clumping in hygroscopic materials like PA/PC).

Core Design Features of Zhuoyue LIW Metering Feeders

Zhuoyue’s Loss-In-Weight Scale Metering Feeders build on the proven China Underwater Pelletizer System Wholesale twin-screw design of our volumetric feeders, adding precision measurement and control systems to deliver industry-leading accuracy:

• High-Precision Load Cells: Stainless steel shear beam load cells with temperature compensation (-10°C to 50°C) to eliminate drift from factory temperature fluctuations.
• Advanced PLC Control System: Color HMI touchscreen with pre-programmed material profiles (isib., medical-grade PVC, XLPE cable compounds, glass fiber-reinforced PA).
• Automatic Refill System: Vacuum or pneumatic refill with anti-surge control to minimize weight measurement errors during hopper refilling.
• Material Conditioning Options: Integrated hopper heaters/dehumidifiers for hygroscopic materials, and vibration assist for low-flow materials (isib., glass fiber-filled compounds).
• Data Logging & Traceability: Built-in data logging (kuya ku 1 year of historical data) for compliance with FDA, ISO, and automotive industry (IATF 16949) traceability requirements.
• ATEX-Certified Options: For use in explosive atmospheres (isib., processing flammable plastic powders or solvents), ihambisana ne-ATEX Directive 2014/34/EU.

Izinzuzo Ezibalulekile Ze-LIW Metering Feeders

1. Ukunemba Komthamo Okungafani

Ngokunemba komthamo ongu-±0.1% nokuphindaphinda okungu-±0.05%, Izifunzi ze-LIW ziqinisekisa okokufaka okungaguquguquki kokubalulekile ku-extruder—okubalulekile kukho:

• I-extrusion yedivayisi yezokwelapha (IV amashubhu, izinsimbi zokuhlinza) lapho ukubekezelelana kobukhulu kungu-±0.01mm
• I-extrusion yengxenye yezimoto (ama-gaskets, ukunquma kwangaphakathi) lapho ukungaguquguquki kwezinto kuthinta izakhiwo zemishini
• I-extrusion ye-cable insulation (I-XLPE/LSZH) lapho ukushuba kwe-insulation kuthinta ngqo ukusebenza kukagesi

Ukuhlolwa komuntu wesithathu okwenziwa yi-International Society of Automation (ISA) iqinisekisa ukuthi abaphakeli be-LIW be-Zhuoyue bagcina ukunemba ngisho nokuhlukahluka kwenqwaba yezinto kufika ku-15%—inkinga evamile ngamapulasitiki agaywe kabusha noma agcwalisiwe..

2. Ukulahlwa Kwezinto Ezincishisiwe

Umthamo oqondile uqeda ukudlisa ngokweqile (inkinga evamile nge-volumetric feeders), ukunciphisa udoti wempahla by 3-5% ngokuqhutshwa kokukhiqiza. Okokusebenza kwenani eliphezulu (isib., I-TPU yezinga lezokwelapha ngo-$5/kg), lokhu kusho ukonga izindleko zonyaka ze $50,000-$150,000 Okwe 24/7 indawo yokukhiqiza.

3. Ukuthobela Umthetho & Traceability

Ukungena kwedatha eyakhelwe ngaphakathi nezindlela zokuhlola kwenza izifunzi ze-LIW zilungele izimboni ezilawulwayo. Yonke imingcele ye-dosing (indawo yokubeka, isilinganiso sangempela, uhlobo lwezinto ezibonakalayo, I-ID yomsebenzisi) zirekhodwa futhi zingathunyelwa kufomethi ye-CSV/PDF ukuze ihlolwe okulawulwayo—okubalulekile ku-FDA 21 Ingxenye ye-CFR 11 ukuthobela (amarekhodi/amasiginesha kagesi) ekukhiqizweni kwemishini yezokwelapha.

4. Ukuzinza Kwenqubo & Ikhwalithi Yomkhiqizo

Ukuphakelwa kwezinto okungaguquki kuzinzisa yonke inqubo yokukhipha, ukunciphisa ukuhluka kwengcindezi yokuncibilika, izinga lokushisa, kanye nobukhulu bomkhiqizo. Lokhu kubangela ukuthi:

• Izilinganiso ze-Scrap zehliswe ngo 50-70% ngezicelo ezibucayi
• Ukukhiqizwa okumbalwa okwenqabayo (down to <0.5% for medical tubing)
• Longer extruder screw/barrel life (reduced wear from inconsistent feeding)

Technical Specifications: Zhuoyue Metering Feeder Systems

1. Volumetric Feeder Specifications

Model	Twin-Screw Diameter (mm)	Speed Range (rpm)	Feeding Capacity (kg/ihora)	Motor Power (kW)	Accuracy
ZYVF-15	15	0-80	5-50	0.75	±2%
ZYVF-25	25	0-90	20-150	1.5	±2%
ZYVF-35	35	0-100	50-500	2.2	±2%
ZYVF-50	50	0-100	100-2000	4.0	±2%

2. Loss-In-Weight (LIW) Metering Feeder Specifications

Model	Twin-Screw Diameter (mm)	Speed Range (rpm)	Feeding Capacity (kg/ihora)	Motor Power (kW)	Load Cell Capacity (kg)	Accuracy
ZYLIW-15	15	0-80	5-50	0.75	50	±0.1%
ZYLIW-25	25	0-90	20-150	1.5	150	±0.1%
ZYLIW-35	35	0-100	50-500	2.2	500	±0.1%
ZYLIW-50	50	0-100	100-2000	4.0	2000	±0.1%

Application Guide: Choosing Between Volumetric & LIW Feeders

Selecting the right feeder system depends on your material type, product requirements, and budget. Below is a clear guide to help you choose:

Factor	Choose Volumetric Feeder If…	Choose LIW Feeder If…
Material Type	Virgin pellets, general-purpose compounds, low-cost regrind	Medical-grade plastics, filled/ reinforced engineering plastics, LSZH/XLPE cable materials, high-value regrind
Accuracy Requirement	±2% accuracy is sufficient (general pipe/profile/sheet extrusion)	±0.1% accuracy required (medical tubing, izingxenye zezimoto, cable insulation)
Ukuthobela Umthetho	No strict traceability/compliance requirements	I-FDA, ISO, IATF 16949, or ATEX compliance required
Budget	Upfront cost is a primary concern (30-50% lower cost than LIW)	Long-term cost savings (waste reduction, quality improvement) justify higher upfront cost
Umthamo Wokukhiqiza	High-volume, low-margin production	Mid-to-high volume, high-margin production

Ucwaningo lwesigameko: LIW Feeder Improves Medical Tubing Production (EU Facility)

A leading EU medical device manufacturer replaced volumetric feeders with Zhuoyue ZYLIW-25 LIW feeders for their soft PVC medical tubing production line in 2024. The client’s key challenges were:

• High scrap rate (8%) due to inconsistent feeding leading to dimensional variation
• Non-compliance with FDA 21 Ingxenye ye-CFR 11 (lack of data traceability)
• Material waste of 6% from over-feeding

After installing the LIW feeders:

• Scrap rate dropped to 0.4% (95% reduction) due to ±0.1% dosing accuracy
• Material waste reduced to 1% (83% reduction), saving €75,000/year in PVC material costs
• Full compliance with FDA 21 Ingxenye ye-CFR 11 (data logging and audit trails)
• Production throughput increased by 10% (no more downtime from dimensional rejects)
• ROI achieved in 9 izinyanga

The client reported that the LIW feeders not only improved product Filler Masterbatch Machine Supplier quality and compliance but also reduced operator intervention by 50%—freeing staff to focus on other critical production tasks.

Ukufakwa, Calibration & Maintenance of Metering Feeders

1. Ukufakwa

Zhuoyue’s metering feeders are designed for easy installation:

• Volumetric feeders: Mount directly to extruder feed throats (flange-mount design) or standalone frames, with electrical connections to extruder control panels (220V/380V single/three-phase).
• LIW feeders: Ifakwe kumaphedi e-anti-vibration (ukuqeda ukuphazamiseka kweseli yokulayisha) enezindawo ezivalekile zikagesi zamasistimu okulawula. Ukufaka ngokuvamile kuthatha 4-8 amahora okuphakelayo.

Ithimba lethu lezobuchwepheshe elisendaweni liphethe konke ukufakwa kanye nezintambo, ukuqinisekisa ukuthobela amakhodi endawo kagesi (CE, UL, I-NEC).

2. Calibration

Ukulinganisa kubalulekile ukuze kube nokunemba kwesiphakeli:

• Volumetric feeders: Ikalwa ngokusebenza okubalulekile ngesiphakeli nokulinganisa ivolumu yokukhipha ngesikhathi esimisiwe (10 imizuzu). Isivinini siyalungiswa ukuze sifane nezinga lokuphakelayo okuqondiwe—kuyathatha ukulinganisa 30 imizuzu ngohlobo lwezinto ezibonakalayo.
• LIW feeders: Ukulinganisa okuzenzakalelayo nge-HMI (asikho isidingo sokukala mathupha), ngesinxephezelo sokushisa okuzenzakalelayo. Ukulinganisa kunconywa njalo 3 izinyanga (noma ngemva kokushintshwa kwezinto ezibonakalayo) futhi kuthatha 15 imizuzu i-feeder ngayinye.

I-Zhuoyue ihlinzeka ngesitifiketi sokulinganisa somphakeli ngamunye, ihambisana ne-ISO 9001 izindinganiso zekhwalithi.

3. Isondlo

Preventive maintenance ensures long feeder life and consistent performance:

• Daily: Inspect hopper for material bridging, clean feeder inlet/outlet, check motor temperature.
• Weekly: Lubricate screw bearings, inspect stirring roller for wear, verify speed calibration.
• Monthly: Inspect screw/barrel for wear (volumetric feeders), check load cell calibration (LIW feeders).
• Annual: Replace wear parts (izikulufu, stirring rollers), full system inspection and recalibration.

Zhuoyue offers a preventive maintenance program with scheduled on-site visits (quarterly/annually) futhi 24/7 technical support for emergency repairs.

FAQs About Zhuoyue Metering Feeder Loss-In-Weight Scale & Volumetric Feeders

Q: Can LIW feeders handle recycled plastics with inconsistent bulk density?

A: Yebo. Zhuoyue’s LIW feeders use dynamic speed adjustment to compensate for bulk density variations (kuya ku 15%) in recycled plastics. Siphinde futhi sinikeze amaphrofayili angokwezifiso ngezikulufo zokuphinda agaye izinto zokuthuthukisa ukugeleza nokunciphisa iphutha lokulinganisa.

Q: Isiphi isikhathi sokuhola seziphakeli ze-LIW ezilungiselelwe ngokwezifiso?

A: Amamodeli ajwayelekile (ZYLIW-15 ukuze ZYLIW-50) ube nesikhathi sokuhola 4-6 amasonto. Ukulungiselela ngokwezifiso (Isitifiketi se-ATEX, ukuhambisana kwe-cleanroom, izinketho zokubeka impahla) dinga 8-10 amasonto. Ukukhiqizwa okusheshisiwe (3-isikhathi sokuhola ngesonto) iyatholakala ngokungeziwe 20% imali.

Q: Ingabe unikeza ukuqeqeshwa komsebenzisi kanye nokulungisa?

A: Yebo. Sinikeza ukuqeqeshwa endaweni yosuku olungu-1 kwabasebenza (ukusebenza okuyisisekelo, ukulinganisa, ukuxazulula inkinga) kanye nokuqeqeshwa kwezinsuku ezi-2 kochwepheshe bezokulungisa (ukulinganisa okuthuthukisiwe, ukulungisa, ukushintshwa kwengxenye). Ukuqeqeshwa kutholakala ngesiNgisi, IsiJalimane, IsiFulentshi, ISpanishi, kanye nesiMandarin.

Q: Ingabe izifunzo eziningi zingavunyelaniswa ne-extruder eyodwa (yokuhlanganiswa kwezingxenye eziningi)?

A: Yebo. Isistimu yokulawula emaphakathi ye-Zhuoyue ingavumelanisa kuze kube 4 abaphakeli (impahla esemqoka + additives/fillers) with a single extruder, ensuring precise ratio control (isib., 95% PE + 5% color masterbatch). This is ideal for compounding applications requiring multiple material components.

Q: What is the warranty for Zhuoyue metering feeders?

A: Volumetric feeders: 2-year warranty on mechanical components (izikulufu, imiphongolo, izinjini), 1-year warranty on electronics. LIW feeders: 3-year warranty on load cells and mechanical components, 2-year warranty on electronics. We also offer extended warranty options (kuya ku 5 iminyaka) for an additional fee.

As a trusted supplier of metering feeder systems for over 17 iminyaka, Zhuoyue’s volumetric and loss-in-weight feeders are engineered to meet the diverse needs of plastic extrusion manufacturers—from cost-effective standard feeding to precision dosing for regulated industries. Our focus on reliability, accuracy, and ease of use ensures that your extruder feeding process is efficient, consistent, futhi kungabizi—okukusiza ukuthi ukhulise isivuno sokukhiqiza kanye nekhwalithi yomkhiqizo. Xhumana nethimba lethu lezobuchwepheshe namuhla ukuze uxoxe ngezidingo zakho zokudla futhi ucele umhlahlandlela wamahhala wokukhetha okuphakelayo ofanelana nesicelo sakho se-extrusion.