UET-B, UET-D and UET-Max series compounding extruders — built for masterbatch, modified plastics, biodegradables and recycling, from 80 to 4,500 kg/h. We have shipped 5,600+ twin screw lines to 85+ countries since 2004.
Written by our application engineers who have commissioned 5,600+ compounding lines across 85+ countries.
A twin screw extruder melts, mixes and pumps polymer in one continuous step. Two intermeshing screws turn in the same direction inside a heated barrel, so material is conveyed positively, melted quickly and mixed far more intensely than in a single screw machine. That is why compounding plants, masterbatch producers and polymer modifiers rely on it.
UET Machine has built co-rotating twin screw extruders since 2004. More than 5,600 machines now run in 85+ countries, compounding everything from basic color masterbatch to glass-fiber PA6 and PLA/PBAT biodegradable resins.
Why buyers choose twin screw: self-cleaning screws, tight melt-temperature control and repeatable output — the three things that decide whether a compounded pellet sells at a premium or goes to scrap.
Co-rotating twin screw extruder: motor, high-torque gearbox and modular bimetallic barrel — the core of every UET compounding line.
How a Twin Screw Extruder Works
1
Feeding
Resins, fillers and additives drop into the hopper. Gravimetric feeders hold dosing to ±0.5%, so the recipe stays on spec shift after shift.
2
Conveying
The co-rotating screws push material forward through the barrel. Positive displacement handles powders, pellets and liquids that stall single screw machines.
3
Melting
Barrel heaters plus shear friction melt the polymer. Independent zone control holds each zone within ±1.5°C, protecting heat-sensitive resins.
4
Mixing & Dispersion
Kneading blocks break down agglomerates and spread fillers, pigments and additives evenly — without over-shearing the base resin.
5
Extruding & Pelletizing
The homogeneous melt exits the die and is cut into uniform pellets by strand, water-ring or underwater pelletizers downstream.
Engineering Excellence
Why UET Twin Screw Extruders Outperform
Every design decision on a UET extruder serves one purpose: a more uniform melt at a lower cost per kilogram.
High Torque Density
Deep screw channels and torque grades up to 18 N·m/cm³ raise output without raising screw speed or melt temperature.
Modular Barrel & Screws
Screw elements and barrel sections swap in hours, not days. Recipe changeover time drops by roughly 30% with quick-release clamps.
±1.5°C Temperature Control
Independent zoned heating and cooling keep heat-sensitive materials like PLA and PBAT inside their narrow processing window.
Superior Mixing & Dispersion
Optimized kneading block geometry gives even color strength and full dispersion at 85% CaCO₃ loading — without over-shearing.
Wear-Resistant Core
Bimetallic barrels (HRC 58-62) and powder-metallurgy screw elements last about 3x longer in abrasive, high-fill recipes.
−15% Specific Energy
Efficient gearboxes and tuned screw profiles cut kWh/kg versus conventional designs — around $8,000 a year saved on a mid-size line.
Product Range
Twin Screw Extruder Configurations
Four proven configurations cover most compounding jobs. Need something in between? We build to order.
UET-B Standard Series
The entry point for filler masterbatch and general compounding. Proven mechanics, straightforward operation, competitive pricing.
Compatible Raw Materials & Products You Can Produce
Send us your resin data sheet and target output. If we have compounded it before — and after 5,600 machines we usually have — the quote comes with a proven screw layout.
Supported Raw Materials
Polyolefins
The everyday plastics behind packaging, pipe, film and household goods.
PE (HDPE/LDPE/LLDPE)PPEVAPOEEPDM
Engineering Plastics
High-performance polymers for automotive, electrical and industrial parts.
PA6 / PA66PBTPCABSPOMPPOPPS
Biodegradable Polymers
Compostable resins that need gentle, low-shear screw designs to survive.
PLAPBATPBSPHAPCLStarch Blends
Elastomers & Specialty
Flexible compounds and cable materials that ask for real torque.
TPETPVTPOSEBSPVCXLPELSZH
End Products You Can Produce
Masterbatch Pellets
Filler (up to 85% CaCO₃), color, additive and functional masterbatch with even dispersion and stable color strength.
Modified Engineering Plastics
Glass/carbon fiber reinforced PA, PBT, PC, ABS; flame-retardant and mineral-filled compounds that keep their properties.
Sheets, Films & Profiles
Extruded sheet, film and custom profile with stable dimensions and clean surfaces.
Pipes & Tubes
PE/PP/PVC pipe compounds and direct extrusion of plumbing, conduit and structural pipe.
Wires & Cables
XLPE, LSZH and PVC insulation/sheathing compounds with reliable dielectric strength and flame retardancy.
3D Filaments & Specialty
Biodegradable film, medical-grade material, 3D printing filament and recycled granules.
Turnkey Solutions
Complete Twin Screw Extrusion Line Configuration
A compounding line is only as stable as its weakest module. UET sizes, builds and controls every station in-house, so the line arrives matched — not a pile of mismatched parts.
Turnkey Compounding Line — 80 to 4,500 kg/hFeeding → extrusion → cooling → pelletizing → packaging, engineered and integrated by UET as a single supplier.
1
Feeding System
Loss-in-weight feeders dose resins, fillers and additives to ±0.5% accuracy.
What You Can Produce with UET Twin Screw Extruders
Eight application families we run in our own test lab every week. Each ships with a screw configuration proven on your material type.
01
Filler Masterbatch
CaCO₃ up to 85%, talc and BaSO₄ with full dispersion and no over-shearing. Stable output at 70%+ loading.
02
Color Masterbatch
TiO₂, carbon black and organic pigments dispersed to ΔE < 1.0, with fast multi-color changeover.
03
Additive Masterbatch
Antioxidants, HALS UV stabilizers, slip and anti-block additives blended evenly into PE, PP and EVA carriers.
04
Engineering Plastics
PA6, PA66, PBT, PC, ABS with 10-50% glass fiber, carbon fiber or mineral reinforcement — properties intact.
05
Biodegradable Plastics
PLA, PBAT, PBS and PHA handled with low shear and tight temperature control so the resin keeps its properties.
06
Thermoplastic Elastomers
TPE, TPV, TPO and SEBS with hardness dialed in from Shore A 30-90 for automotive and consumer parts.
07
Cable Compounding
XLPE, LSZH and PVC insulation/sheathing compounds holding >20 kV/mm dielectric strength and flame retardancy.
08
PVC Compounding
Rigid and flexible PVC with even melting and stable pressure for pipe, profile and cable production.
Why Choose Twin Screw
Twin Screw vs Single Screw Extruder
Buyers moving up from single screw machines ask us the same question: is the extra investment worth it? Here is the honest comparison.
Feature
Twin Screw Extruder
Single Screw Extruder
Mixing Quality
✓ Superior distributive & dispersive mixing
✗ Limited mixing capability
Self-Cleaning
✓ Intermeshing screws prevent material buildup
✗ Requires frequent manual cleaning
Feeding Performance
✓ Positive displacement – handles powders easily
✗ Friction-dependent – struggles with powders
Residence Time
✓ Short & uniform – reduces degradation
✗ Variable – risk of material degradation
Applications
✓ Compounding, masterbatch, engineering plastics
✗ Simple extrusion only
Investment
Higher initial cost, better ROI for complex materials
Lower cost, limited versatility
Built in Our Own Factory
Every Twin Screw Extruder Is Proven Before It Ships
Machined, assembled and test-run inside our 11,400㎡ facility in Nanjing, China. Inspect your machine with your own material — in person or over live video — before dispatch.
Screws & barrels machined and heat-treated in-house (HRC 58-62)
Full-load mechanical test + material trial run on every machine (72 hours)
CE-certified builds with itemized, transparent quotations (no hidden fees)
Why Choose UET as Your Twin Screw Extruder Manufacturer in China?
Price gets a supplier shortlisted. These six points decide whether the machine still runs at rated output three years later.
20+ Years Building Nothing but Extruders
We opened in 2004 and have shipped 5,600+ twin screw machines to 85+ countries since — most still in daily production.
Own Factory, In-House Machining
Our 11,400㎡ Nanjing plant machines every screw element and barrel in-house. You deal with the people who made the machine, not a trading company.
72-Hour Full-Load Testing
Each extruder runs a full-load mechanical test and a material trial before crating. Join by video or fly in — the test report ships with the machine.
Transparent Itemized Quotations
Quotations list the extruder, electricals, downstream equipment and spares line by line. What you see is what you pay.
24/7 Engineer Support
Message our engineers on WhatsApp at 2 a.m. and you get an answer before your next shift starts. Average response: under 2 hours.
Free Custom Screw Layout
Send your formulation; our engineers return a screw-element layout matched to it at no extra charge.
Customer Success Stories
Twin Screw Lines Running Worldwide
Real results from real customers across 85+ countries
★★★★★
Verified Buyer
“Our UET75-D holds 800 kg/h on 70% CaCO₃ filler masterbatch with stable torque and no surging. Dispersion matches lines we ran in Europe. ROI landed in 14 months.”
Emma CarterProduction Manager · Masterbatch Plant, Turkey
★★★★★
Verified Buyer
“Recipe changeover really takes 30 minutes against 2 hours on our old machine — the modular barrel design is not marketing, it is real. We run 12 colors a day with minimal waste.”
Lily MorganOperations Director · Compounding Line, USA
★★★★★
Verified Buyer
“We compared five Chinese suppliers. UET sent an itemized quote in 2 hours, let us video-inspect the FAT with our PLA material, and delivered 3 days early. WhatsApp support is instant.”
Michael DavisPurchasing Supervisor · Bioplastics, Germany
What Information to Provide for a Fast, Accurate Quote
Material type and formulation (resin, filler %, additives)
Target output capacity (kg/h or lbs/h)
Product type (pellets, sheets, pipes, profiles, films)
Available power supply (voltage: 380V/440V/480V, frequency: 50/60Hz)
Factory space dimensions (L×W×H in meters)
Special requirements (explosion-proof, food-grade stainless steel, ATEX)
Twin Screw Extruder Questions, Answered by Engineers
Straight answers on specs, lead times and performance — no sales talk.
What is a twin screw extruder used for?
Twin screw extruders are built for compounding — melting a polymer while mixing in fillers, pigments, additives or a second resin. Typical jobs: filler/color/additive masterbatch, glass-fiber reinforced PA and PBT, biodegradable PLA/PBAT, cable compounds (XLPE, LSZH) and PVC compounding. Anywhere mixing quality, devolatilization or reactive extrusion matters, twin screw is the machine of choice.
How do I choose between UET-B, UET-D, and UET-Max series?
Match the torque to your recipe: • UET-B (6.5-9 N·m/cm³): color masterbatch, fills under 50%, budget-conscious buyers. 80-1,500 kg/h. • UET-D (10-12 N·m/cm³): high-filler masterbatch (70-85% CaCO₃), engineering plastics, round-the-clock runs. Our best seller. 150-2,500 kg/h. • UET-Max (13-18 N·m/cm³): cable compounds, reactive extrusion, maximum throughput. 200-4,500 kg/h.
Send your formulation and target output — we recommend the smallest series that does the job, so you don’t pay for torque you won’t use.
What L/D ratio do I need for my application?
L/D sets residence time and mixing intensity: • 28-32: simple blending, low-viscosity resins, basic color masterbatch • 32-40: filled compounds, glass fiber reinforcement, standard engineering plastics • 40-46: 80%+ filler loads, reactive extrusion, devolatilization, hard-to-disperse pigments
Most buyers land on 36-40 — the best mixing-per-dollar. We re-spec L/D free with your quotation.
Why choose a Chinese twin screw extruder manufacturer?
A Chinese manufacturer like UET typically delivers 60-90 day lead times instead of 6-12 months, with direct factory support and no distributor margin. The quality gap has closed fast: UET machines ship CE-certified with bimetallic barrels and Siemens/Schneider electricals. The real filter is simple — buy from a factory that machines its own screws, tests every machine under load, and answers the phone after the sale.
What should I look for in a twin screw extruder supplier?
Run this checklist before you sign a contract: • Own factory or trading company (ask for a live video tour) • In-house machining of screws and barrels • Pre-shipment test with your material (72-hour trial) • Itemized quotation, not a lump sum • After-sales reach: 24/7 WhatsApp, spare parts stock • Certifications: CE, ISO 9001, SGS • References running your material type
For large orders, video-inspect the factory or visit in person.
What is the typical lead time and warranty?
Lead time: standard models (UET30-B to UET75-D) ship in 60-75 days; large models (UET85-D to UET140-Max) take 90-120 days; expedited builds available on request. Sea freight adds 15-25 days to Southeast Asia, 25-35 days to Europe/Americas.
Warranty: 18 months from shipment (or 12 months from commissioning) on gearbox, motor, electricals, screws and barrels — 24 months on screws & barrels specifically. Warranty parts ship free by air; support and spares continue for the life of the machine.
Do you provide installation, training, and after-sales support?
Yes. An engineer commissions the line on site in 5-7 days. Training runs 5 days: operation, parameter tuning, maintenance, troubleshooting, safety. Remote support answers on WhatsApp/WeChat/video around the clock — under 2 hours on average. Spare parts ship from stock within 48 hours, and you receive full documentation: manuals, electrical diagrams, PLC backup and an exploded spare-parts list.
How do I get a quote for a twin screw extruder?
Send us four pieces of information: (1) your material and formulation, (2) target output in kg/h, (3) final product type, (4) your plant power standard. We return an itemized quotation within 2 hours covering the extruder, control system, downstream equipment, spare parts kit, commissioning and warranty. Click “Get Free Quote” above or message us on WhatsApp at +86 17310024510.
