Metering Feeder Loss-In-Weight Scale

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. While volumetric feeders offer cost-effective solutions for standard applications, loss-in-weight scales deliver the precision required for high-value, tight-tolerance extrusion processes—making both systems critical tools in the modern plastic processing facility.

Volumetric Feeder: Cost-Effective Feeding for Standard Extrusion Applications

The volumetric feeder is suitable for most extruder feeding solutions, it has low-cost and high-efficiency feeding characteristics. As the most widely used feeding system for general extrusion applications, volumetric feeders balance affordability with reliable performance, making them ideal for small to mid-sized manufacturers processing non-critical materials (t.s., general purpose PE/PP, rigid PVC compounds) ena vanua e sega ni gadrevi taumada kina na dosing dodonu.

E sega ni vaka na vakayali-ena-bibi ni ivakarau ka vakarautaka na bibi ni iyaya ena gauna dina ., volumetric feeders vakauta e dua na iwiliwili tudei ni iyaya ki na extruder-lewai ena totolo ni veisau ni sikivu kei na sikivu geometry .. Na rawarawa oqo e vakadewataki me vakalailaitaka na isau ni upfront . (30-50% lailai mai na ivakarau ni lusi-ena-bibi .) kei na lailai ni kena maroroi, cakava na veivakani na volumetric e dua na digidigi yaga me baleta na levu-volavola, cici na buli iyaya lailai.

Na ituvatuva bibi ni veivakani kakana me baleta na ivolakerekere ni Extruder

Na vakani volumetric e tiko kina e dua na sikivu lailai ni rua ., bareki, kei na moto Filler Masterbatch Machine Manufacturer idinia me baleta na drodro ni iyaya nuitaki kei na lailai duadua ni gauna ni vakacegu. Na ituvatuva ni rua na sikirini ni veivakaduavatataki e vakamacalataka e rua na bolebole bibi ni dua ga na sikirini ni volumetric feeders .: iyaya kei na vakasaqa sega ni veiganiti, ka vakaleqa vakadodonu na extruder kei na ivakarau ni ka e buli.

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 (t.s., 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 motos eficacia con 0-100 rpm veisautaki na lewa ni totolo, vakatara na veisau dodonu ni domo me veiganiti kei na output ni extruder (5-2000 kg/auwa).
• Rola ni veivakauqeti ni veivakacacani: Na rola ni veivakauqeti e vakacurumi ena curucuru ni hopper ni kakana e tarova na iyaya ni veitaratara kei na rat-holing, vakadeitaka na curu ni iyaya tudei ki na bareki ni sikivu-rua.
• Na yava ni yava: Vakarautaki me veiganiti ena vanua ni kabani kaukauwa, kei na vakavodoki rawarawa ki na extruder vakani gusu se tu vakataki koya na isema ni veitokoni.
• Rawarawa na kena vakasavasavataki: Bareki totolo-vakagalalataki kei na soqoni ni sikivu me baleta na veisau totolo ni iyaya (≤10 na miniti me baleta na levu ni iyaya), vakalailaitaka na gauna ni vakacegu ena maliwa ni cici ni buli iyaya.

Na yaga bibi ni veivakani kakana

1. Lalai na isau taucoko ni taukena

Na veivakani Volumetric e tiko kina na isau lailai duadua ni upfront ni dua na ivakarau ni veivakani kakana ., kei na lailai duadua ni veiqaravi (sega na sela ni icolacola, sensor, se iyaya vakalivaliva vereverea me vakarautaki .). Na veiqaravi vakawasoma e vakaiyalayala ga ki na lubrication ni veitiki ni toso kei na veigauna ni sikivu/bareki ni veivakadeitaki-na itavi e rawa ni vakayacori mai vei ira na timi ni veiqaravi ena loma ni vale ka sega na vuli vakatabakidua ..

2. Na cakacaka cecere me baleta na iyaya ni ivakatagedegede

Me baleta na peleti galala-drodro (t.s., goneyalewa PE/PP) kei na veiqaravi ni veivakaduavatataki sega ni bibi, vakauta mai na veivakani kakana 95% vakani vinaka (Na iyaya e vakau yani vs. iyaya e vakavodoki), kei na vakasukasuka tudei ni ± 2%-rauta me baleta na kerekere me vaka na extrusion ni paipo raraba-inaki ., buli pepa, se extrusion ni itukutuku ena vanua e sega ni gadrevi kina na vosota kaukauwa.

3. Rawarawa na cakacaka & Vuli

Na dua na mataveilawa ni lewa rawarawa . (qiri totolo analog se yavu ni lewa digitaki), na veivakabulabulataki ni volumetric e gadrevi kina na vuli lailai ni dauveiqaravi —vakabibi . 1-2 auwa ni veivakavulici ena liga. Oqo e dua na ka bibi vei ira na dau buli iyaya kei na cecere ni dauveiqaravi turnover se vakaiyalayala na tamata cakacaka vakatekinoloji ..

4. Veiganiti kei na Raraba ni iyaya .

Na veivakabulabulataki ni Zhuoyue e qarava e dua na iwalewale raraba ni iyaya palasitika, okati kina:

• Peleti goneyalewa (PE, PP, PVC, ABS, PS)
• Moli tale na tikitiki/peleti (me yacova na 50% vakavoutaka na lewena)
• Na veiwaki vakasinaiti (me yacova na 40% kabonati ni kalisium/vakasinaiti ni talc)
• Roka ni roka (lailai ki na veimama ni isau ni vakavodoki)

Lusi-ena-bibi (LIW) Vakani ni Mita ni Vakarau: Vakani vakadodonu me baleta na ivolakerekere bibi

Ni sa uasivi cake na veivakani na volumetric ena isau-vinaka ., ivakarau ni kerekere, Filler Masterbatch Machine Factory Lusi-ena-bibi (LIW) ivakarau ni metering feeders era sa idinia me baleta na dosing dodonu-bibi me baleta na iwalewale ni extrusion cecere-yaga na vanua e vakadodonutaka kina na tudei ni iyaya na cakacaka ni ka e buli ., vakamuri ni lawa, se na vua ni buli. LIW feeders vakarautaka na bibi ni iyaya e vakasavi tiko ena gauna dina ., adjusting screw speed dynamically to maintain exact dosing rates (±0.1% accuracy), making them the gold standard for medical, motoka, 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 (t.s., 50 kg/auwa).
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. Ni sa yacova na ivakatagedegede ni hopper e dua na ivakatagedegede lailai ., e dua na ivakarau ni vakasinaiti vakataki koya (transportadora se auger) vakasinaita na hopper — kei na akaude ni PLC me baleta na bibi ni vakasinaita me maroroi kina na tomani tikoga ., dodonu na kena vakayagataki.

Na ivakarau ni lewa ni sogo-loop oqo e vakadeitaka ni sa rawata na extruder e dua na bibi tudei ni iyaya ena dua na iuniti ni gauna ., veitalia na itovo ni drodro ni iyaya (t.s., veisau ni levu ni kena levu ena regrind, na suasua-vakavuna na vakasoqoni vata ena iyaya ni suasua me vaka na PA/PC).

Na ivakatakilakila ni ituvatuva ni Zhuoyue LIW vakani

Zhuoyue ni lusi-ena-bibi ni ivakarau ni vakarautaki ni veivakani na tara ena vakadinadinataki . China ena ruku ni wai Pelletizer Sistema Mayorista Na ituvatuva ni sikivu rua ni noda vakani kakana, vakaikuritaka na ivakarau dodonu kei na ivakarau ni lewa me vakadewataka na dodonu ni bisinisi-veiliutaki:

• Sela ni icolacola cecere-dodonu: Na sela ni icolacola ni bimi ni sitila kei na veivakadodonutaki ni katakata (-10°C ki na 50°C) me vakaotia na drodro mai na veisau ni katakata ni kabani.
• Na ivakarau ni lewa ni PLC toso ki liu: Roka HMI sikirini kei na itukutuku ni iyaya sa parokaramutaki oti (t.s., PVC ni kalasi vakavuniwai, XLPE kebulu ni veivakaduavatataki, PA vakaukauwataki ena fibra ni iloilo).
• Sistema ni vakavoui vakataki koya: Vacuum se vakasinaiti ni cagi kei na lewa ni anti-surge me vakalailaitaka na cala ni vakarautaki ni bibi ena gauna ni vakasinaiti ni hopper.
• Digidigi ni veivakarautaki ni iyaya: Hopper vakatakatari / vakawaicalataka me baleta na iyaya hygroscopic, kei na veivuke ni vibration me baleta na iyaya lailai-drodro (t.s., bilo fiber-vakasinaiti na veivakaduavatataki).
• Tukutuku ni itukutuku & Rawa ni vakamuri: Tara-ena itukutuku ni volavola (me yacova na 1 yabaki ni itukutuku makawa) me baleta na kena muri na FDA, ISO, kei na bisinisi ni motoka (IATF 16949) na veika e gadrevi me rawa ni vakamuri.
• Digidigi ni ATEX-vakadeitaki: Me vakayagataki ena draki kacabote (t.s., cakacakataki ni pauta palasitika kama se veivakawaicalataki), salavata kei na veidusimaki ni ATEX 2014/34/EU.

Na yaga bibi ni LIW na veivakani

1. Dosa sega ni vakatauvatani rawa

Na dodonu ni dosing ni ± 0.1% kei na tokaruataki ni ± 0.05%, LIW vakani vakadeitaka na tudei ni iyaya ni vakacurumi ki na extruder-bibi me baleta na .:

• Na iyaya ni veiqaravi vakavuniwai (IV paipo, iyaya ni veisele) evei na vosota ni veimama e ± 0.01 mm
• Vakavotukanataki ni veitiki ni motoka (gasi, vakavinakataki ni loma) na vanua e tara kina na iyaya vakamisini
• Extrusión de insulacion de cable (XLPE/LSZH) na vanua e tara vakadodonu kina na cakacaka ni livaliva na mavoa ni insulation

Na ikatolu ni ilawalawa ni veivakatovolei mai na iSoqosoqo ni Veimatanitu ni Automation . (AIS) vakadeitaka ni Zhuoyue ni LIW feeders maroroya na dodonu sara mada ga ena veisau ni iyaya levu ni density me yacova na 15% —e dua na leqa e dau yaco ena palasitika vakayagataki tale se vakasinaiti ..

2. Vakalailaitaka na benu ni iyaya

Na dosing dodonu e vakaotia na vakani vakasivia (e dua na leqa e dau yaco ena veivakani kakana), vakalailaitaka na benu ni iyaya ena 3-5% ena dua na cici ni buli iyaya. Me baleta na iyaya cecere-yaga (t.s., TPU ni kalasi vakavuniwai ena $5/kg), oqo e vakadewataki ki na ilavo maroroi vakayabaki ni . $50,000-$150,000 me baleta e dua na 24/7 vanua ni buli iyaya.

3. Vakamuri ni lawa & Rawa ni vakamuri

Na itukutuku ni tara-ena logging kei na sala ni vakadidike e cakava na LIW feeders vinaka duadua me baleta na veiqaravi vakalawa. Na paramita kece ni veivakabulabulataki (vanua ni vakatulewa, isau dina, mataqali iyaya, ID ni dauveiqaravi) era volai ka rawa ni vakau yani ki na CSV/PDF ituvatuva me baleta na veivakadeitaki ni lawa-bibi me baleta na FDA . 21 CFR Wase 11 kena muri (itukutuku vakalivaliva/saini) ena buli iyaya vakavuniwai.

4. Tudei ni iwalewale & Na vinaka ni ka e buli

Na vakani iyaya tudei e vakadeitaka na iwalewale taucoko ni extrusion, vakalailaitaka na veisau ena veivakasaurarataki ni melt, katakata, kei na ivakarau ni ka e buli. Oqo e vakavuna na .:

• Na isau ni scrap e vakalailaitaki ena 100.000. 50-70% me baleta na kerekere bibi
• E lailai na veibeitaki ni buli iyaya (sobu ki na . <0.5% for medical tubing)
• Longer extruder screw/barrel life (reduced wear from inconsistent feeding)

Na ivakatakilakila vakatekinikali: Zhuoyue Metering Feeder Systems

1. Volumetric Feeder Specifications

Ivakaraitaki	Twin-Screw Diameter (mm)	Speed Range (rpm)	Feeding Capacity (kg/auwa)	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. Lusi-ena-bibi (LIW) Metering Feeder Specifications

Ivakaraitaki	Twin-Screw Diameter (mm)	Speed Range (rpm)	Feeding Capacity (kg/auwa)	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, kei na ilavo. Below is a clear guide to help you choose:

Iwiliwili	Choose Volumetric Feeder If…	Choose LIW Feeder If…
Mataqali iyaya	Peleti goneyalewa, 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 (paipo vakavuniwai, veitiki ni motoka, cable insulation)
Vakamuri ni lawa	No strict traceability/compliance requirements	FDA, ISO, IATF 16949, or ATEX compliance required
Ituvatuva ni ilavo	Upfront cost is a primary concern (30-50% lower cost than LIW)	Long-term cost savings (waste reduction, quality improvement) justify higher upfront cost
Voliumu ni buli iyaya	High-volume, low-margin production	Mid-to-high volume, high-margin production

Vuli kisi: 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 CFR Wase 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) ena vuku ni ± 0.1% dodonu ni kena vakayagataki
• Na benu ni iyaya e vakalailaitaki ki na 100.000. 1% (83% reduction), vakabulai €75,000/yabaki ena isau ni iyaya ni PVC
• Na kena muri taucoko na FDA . 21 CFR Wase 11 (itukutuku ni volavola kei na sala ni vakadidike)
• Na tubu ni buli iyaya e tubu ena 100.000. 10% (sega tale ni dua na gauna ni vakacegu mai na veibeitaki ni veimama)
• ROI rawati ena 2019. 9 vula

Na kasitama e ripotetaka ni LIW feeders sega walega ni vakavinakataka na ivoli . Filler Masterbatch Machine Supplier vinaka kei na kena muri ia e vakalailaitaka talega na veivuke ni dauveiqaravi ena 50% —vakagalalataki ira na tamata cakacaka me ra vakanamata ki na so tale na cakacaka bibi ni buli iyaya ..

Vakacurumi, Vakatautauvatataki & Na kena maroroi na veivakani na mita

1. Vakacurumi

Na veivakani na mita ni Zhuoyue e vakarautaki me rawarawa kina na kena vakacurumi .:

• Na veivakani kakana: Ulunivanua vakadodonu ki na gusu ni kakana ni extruder (Na ituvatuva ni ulunivanua ni flange) se tu vakataki koya, kei na veitaratara ni livaliva ki na ilawalawa ni lewa ni extruder (220V/380V duadua/tolu na iwasewase).
• LIW vakani: Vakavodoki ena pads ni veivakacacani (me vakaotia na veivakacacani ni sela ni icolacola) with dedicated electrical enclosures for control systems. Installation typically takes 4-8 hours per feeder.

Our on-site technical team manages all installation and wiring, ensuring compliance with local electrical codes (S.K., UL, NEC).

2. Vakatautauvatataki

Calibration is critical for feeder accuracy:

• Na veivakani kakana: Calibrated by running material through the feeder and measuring discharge volume over a set time (10 miniti). Speed is adjusted to match target feed rate—calibration takes 30 minutes per material type.
• LIW vakani: Automated calibration via the HMI (no manual weighing required), with automatic temperature compensation. Calibration is recommended every 3 vula (or after material changeovers) and takes 15 minutes per feeder.

Zhuoyue provides a calibration certificate for each feeder, compliant with ISO 9001 ivakatagedegede ni vinaka.

3. Maroroi

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 vakani).
• Annual: Replace wear parts (sikivu, stirring rollers), full system inspection and recalibration.

Zhuoyue offers a preventive maintenance program with scheduled on-site visits (quarterly/annually) kei 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?

KEI: Io. Zhuoyue’s LIW feeders use dynamic speed adjustment to compensate for bulk density variations (me yacova na 15%) ena palasitika vakayagataki tale. Eda sa solia talega na itukutuku ni sikivu vakaitaukei me baleta na iyaya ni regrind me vakavinakataki kina na drodro ka vakalailaitaka na cala ni veivakarautaki ..

Q: Na cava na gauna ni veiliutaki me baleta na ivakarau-vakarautaki LIW feeders .?

KEI: Na ivakaraitaki tudei (ZILIV-15 a ZILIV-50) tiko e dua na gauna ni veiliutaki ni . 4-6 macawa. Veivakarautaki vakaitaukei (Sitivikiti ni ATEX, veiganiti ni rumu savasava, digidigi ni vakarautaki ni iyaya) gadrevi 8-10 macawa. Totolo ni kena buli (3-macawa ni veiliutaki) e tiko me baleta e dua na ikuri ni . 20% isau.

Q: O dau vakarautaka na vuli ni dauveiqaravi kei na kena maroroi?

KEI: Io. Eda solia na 1-siga ena-vanua ni vuli me baleta na dauveiqaravi . (yavu ni cakacaka, vakarautaki, vakavinakataki ni leqa) kei na 2-siga ni vuli vei ira na kenadau ni veivakacokotaki . (vakarautaki toso ki liu, vakavinakataki, veisosomitaki ni tiki). E tiko na vuli ena vosa vakavavalagi ., Jamani, Varanise, Vosa vakaSipeni, kei na vosa vaka-Mandarini.

Q: E rawa ni vakatautauvatataki e vuqa na dauveivakani kei na dua ga na extruder . (me baleta na veitikina e vuqa)?

KEI: Io. Na ivakarau ni lewa ni lomadonu ni Zhuoyue e rawa ni vakatautauvatataki me yacova na . 4 veivakani (iyaya bibi + additives/fillers) with a single extruder, ensuring precise ratio control (t.s., 95% PE + 5% color masterbatch). This is ideal for compounding applications requiring multiple material components.

Q: What is the warranty for Zhuoyue metering feeders?

KEI: Na veivakani kakana: 2-year warranty on mechanical components (sikivu, bareki, moto), 1-year warranty on electronics. LIW vakani: 3-year warranty on load cells and mechanical components, 2-year warranty on electronics. We also offer extended warranty options (me yacova na 5 yabaki) for an additional fee.

As a trusted supplier of metering feeder systems for over 17 yabaki, 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, kei na isau-vinaka —vukei iko mo vakalevutaka na vua ni buli kei na vinaka ni ka e buli .. Veitaratara kei na noda timi ni tekinolaji nikua me veivosakitaki kina na nomu gagadre ni vakani ka kerea e dua na idusidusi ni digidigi ni feeder galala e vakarautaki ki na nomu kerekere ni extrusion ..