Medical Tube PVC Tube Extrusion Screw Barrel With Coating Process

Screw diameter: 45mm-65mm
Base Materials: SACM645,SCM440,SKD61, SUS304, SUS316...
Treatment: Nitrided & Bimetallic
Hardness: HRC55-HRC70
Delivery time: 15 days

Product Description:

TOKIN SCREW BARREL for Medical Tubing Extrusion

Optimized for Medical Tube Processing

✓ Excellent Plasticizing Performance

✓ Superior Wear Resistance

✓ Stable Output & Low Energy Consumption

✓ Compatible with Most Major Extrusion Machines

✓ Fast Delivery Within 20 Days

WHAT WE CAN DO :

✔ Nitrided, Bimetallic & Hardened Options

✔ Wear Resistant & Corrosion Resistant

✔ OEM / ODM Manufacturing

✔ Compatible with KraussMaffei, Cincinnati, Battenfeld, Windsor, Jwell and Most Chinese Machines

✔ 20 Days Fast Delivery

✔ More Than 20 Years Manufacturing Experience

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Our precision screw and barrel solutions are suitable for a wide range of medical extrusion applications, including:

*Medical Tubing

*Medical Catheters

*IV and Infusion Tubing

*Blood Tubing

*Dialysis Tubing

*Respiratory Tubing

*Oxygen Tubing

*Feeding Tubes

*Drainage Tubes

*Suction Tubes

*Micro Medical Tubing

*Multi-Lumen Tubing

*Multilayer Medical Tubing

*Balloon Catheter Tubing

*Medical Wire Coating

*Pharmaceutical Tubing

For specialized applications, Tokin can develop customized screw geometry based on the material and extrusion process.

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Common Screw Barrel Materials

SACM645	★★★★★	Nitriding	PE, PP, ABS, PVC and general plastics
42CrMo	★★★★	Quenching & tempering / nitriding	General injection molding and extrusion
D2	★★★	Through hardening	High-wear and glass-fiber-filled plastics
DC53	★★★	Through hardening	High-wear and GF-reinforced plastics
M2	★★	Through hardening	High-wear and high-hardness applications
SUS630	★★★	Aging / precipitation hardening	Applications requiring corrosion resistance and high strength
SUS304	★★	Polishing / surface treatment	Food, medical and corrosion-sensitive applications
SUS316 / 316L	★★–★★★	Polishing / surface treatment	Medical, food, pharmaceutical and high-cleanliness applications

Medical Tubing Extrusion Screw Design

Key design objectives include:

*Stable feeding

*Controlled melting

*Uniform plasticization

*Low-shear processing

*Stable melt pressure

*Consistent extrusion output

*Reduced material residence time

*Precise metering

Tokin can customize the feed, compression, barrier and metering sections according to the characteristics of the polymer.

Medical Extrusion Screw L/D Ratio

Medical tubing extrusion screws commonly use an L/D ratio in the range of approximately 24:1 to 30:1, depending on the material, machine and application.

Typical configurations include:

Application	Typical L/D
General Medical Tubing	24:1–25:1
TPU Tubing	25:1–28:1
PVC Medical Tubing	24:1–26:1
PE / PP Tubing	24:1–26:1
Pebax / PA12	25:1–30:1
Micro Tubing	25:1–30:1
Precision Catheter Extrusion	25:1–30:1

25:1 and 28:1 are practical configurations for many precision medical tubing applications, while the final screw design should be determined by the resin, tubing specification and extrusion equipment.

Medical Extrusion Barrel

A precision barrel is equally important for maintaining stable medical tubing extrusion.

Tokin manufactures customized medical extrusion barrels with options including:

Nitrided Barrels
Hardened Barrels
Chrome-Plated Barrels
Bimetallic Barrels
Precision-Honed Barrels

Barrel specifications can be customized according to:

Screw diameter
L/D ratio
Polymer
Extrusion output
Processing temperature
Machine model
Wear and corrosion requirements

For low-wear polymers, a precision alloy-steel barrel may be sufficient. More demanding materials and applications can be considered for enhanced surface treatments or bimetallic construction.

FAQS：(Easy and Fast One-Stop Solutions)

Q: When will you arrange the production?
A: We can arrange production soon after order & drawings confirmation

Q: What is your delivery time ?
A: Standard delivery time is 20-25 days, if the screw's diameter is less than 50mm, the delivery time can be 15-20 days

Q: What is your accepted payment type?
A: T/T

Q: What logistic forwarder do you usually work with?
A: EMS, TNT, UPS, FEDEX and other high-efficient logistric forwarders

Q: What is your warranty Time ?
A: 12 months when shipment on board