Injection Screw Barrel
We are committed to providing system solutions for the plastics industry and providing high-quality injection screw barrel. After years of technical accumulation, we provide products including Haitian injection machine screw barrel, bimetallic screw and barrel, screw injection molding, Zhoushan screw barrel, Lanson screw barrel set, etc.
Why Choose Us
Production Capacitie
We have two factories with about 9000 square meters construction area located in Zhoushan. Our production capacities can reach 1500 screw barrel sets monthly that enable us to deliver products to our customers in a short time.
Professional Production Equipment
3-axis CNC, 4-axis CNC, Screw Root Diameter Grinding Machine, Centrifugal Casted Furnace, Vacuum Quenching Furnace, Lathe, Hardness Tester, Metallographic Microscope.
Global Market
Our products were widely exported to Southeast Asia, Europe, Middle East, North America, South America and Africa.
Quality Assurance
The R&D, design and production of each of our product focuses on technological innovation and precision manufacturing, strictly controlled in accordance with the quality management system to ensure the performance and quality of each factory equipment.
Jonwai Injection Screw Barrel
Jonwai Injection Screw Barrel Screw Barrel Unit is the major plasticizing part for plastic injection molding machines, which normally consist of screw, barrel, screw tip set, head and nozzles.
CLF Injection Screw Barrel
CLF Injection Screw Barrel Screw Barrel Unit is the major plasticizing part for plastic injection molding machines, which normally consist of screw, barrel, screw tip set, head and nozzles.
Dakumar Screw Barrel
Dakumar Screw Barrel Screw Barrel Unit is the major plasticizing part for plastic injection molding machines, which normally consist of screw, barrel, screw tip set, head and nozzles.


Tederic Injection Screw and Barrel
Tederic Injection Screw and Barrel Screw Barrel Unit is the major plasticizing part for plastic injection molding machines, which normally consist of screw, barrel, screw tip set, head and nozzles.
Toshiba Machine Screw Barrel
Toshiba Machine Screw Barrel Screw Barrel Unit is the major plasticizing part for plastic injection molding machines, which normally consist of screw, barrel, screw tip set, head and nozzles.
Injection Molding Machine Screw Barrel
Injection Molding Machine Screw Barrel Injection molding machine screw barrel is the major plasticizing part for plastic injection molding machines, which normally consist of screw, barrel, screw tip set, head and nozzles.
Specifications
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Material: |
High-quality alloy steel |
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Diameter: |
Up to 300mm |
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Length: |
Up to 8000mm |
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Hardness: |
HRC42-48 |
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Nitriding Treatment: |
0.4-0.7mm |
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Screw Spraying Treatment: |
Bimetallic coating or spray welding |
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Plastic Processed: |
PE, Po, PP, PVC, TPU, PBT, Pet, PLA, Etc. |
Benefits of Injection Screw Barrel
Precision Melt Control and Mixing
Injection screw barrels ensure precise melt control and thorough mixing of additives, colorants, and fillers into the polymer melt. This results in uniform melt quality and enhanced part aesthetics.
Extended Service Life and Durability
Our screw barrels are manufactured from high-quality materials, including nitrided steel, bimetallic alloys, and tungsten carbide coatings, to withstand abrasive wear and corrosion. This ensures extended service life and reduced maintenance downtime.
Optimized Injection Molding Parameters
By optimizing screw design and material selection, our screw barrels enhance injection molding parameters such as cycle time, shot size consistency, and part dimensional stability. This improves overall production efficiency and reduces scrap rates.
Customization Options
We offer customization options to meet specific customer requirements, including screw diameter, length-to-diameter ratio (L/D), flight geometry, material composition, and surface treatments. Our engineering expertise ensures that each injection molding machine screw barrel is optimized for maximum performance and reliability.
The screw
The screw first turns the solid plastic pellets into a molten plastic stream by rotating and shearing the heat generated and then injecting the molten plastic into the mold.
The barrel
There is an auxiliary electric heating device on top of the barrel, which can provide heat for melting plastic pellets.
The nozzle
The nozzle is the transition part connecting the barrel and the mold. The melted material will be injected into the mold with high pressure and fast movement through the nozzle during the injection.
The screw tip
The screw tip is a part mounted on the front of the screw, and its primary function during plasticizing is to mix the plastic melt and make the melt further mixed.

Uses of Injection Screw Barrel

Beverage and Food Packaging Industry
In the beverage and food packaging industry, injection screw barrels are widely used for manufacturing PET bottles, jars, and containers.

Cosmetic and Personal Care Industry
In the cosmetic and personal care product industry, injection screw barrels are used to produce PET containers such as bottles, jars, and boxes.

Pharmaceuticals Packaging Industry
In the pharmaceutical product packaging industry, injection screw barrels are responsible for manufacturing PET drug bottles, jars, and other medical containers.

Industrial Parts and Components Manufacturing
Injection screw barrels can also be used to produce industrial parts and components. Such as technical components, mechanical parts, and auxiliary devices.
Usage Requirements
Proper Temperature Control
Maintain optimal heating and cooling conditions to avoid material degradation and ensure consistent processing.
Avoid Metal Contamination
Use proper filtration and material handling to prevent foreign particles from damaging the screw and barrel.
Correct Screw Speed
Operate at the recommended screw speed to prevent excessive shear and overheating of the material.
Proper Lubrication
Ensure adequate lubrication for smooth operation and to reduce friction-related wear.
●Contact our sales team online via email at info@rootier.cn and provide the products and quantities you need to order and your customization requirements.
●If you don't have drawings, we can help you measure your current screw barrel. Also we can design the screw barrel and select the matched steel materials based on your polymers processing application.
●Once everything is confirmed, we will send you the drawing for confirmation.
●Once approved by you, we will send you a quote so you can place your order and we will begin working on your custom order.
●According to the delivery time, we will arrange shipment after receiving the remaining payment.

Packaging and Delivery
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Payment: |
T/T, Trade Assurance, Paypal, Western Union,Alipay, Credit Card, L/C etc. |
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Safe Packing: |
Plywood Case |
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Shipping: |
Express, Air, Sea |
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Delivery Date: |
7-15Days |
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