Blown Film Plant Screw Barrel

Blown film plant screw barrels are essential components in blown film extrusion equipment, designed to melt, mix, and extrude polymer resins into thin films that are blown into tubular forms. These screw barrels play a crucial role in achieving uniform melt distribution, controlled cooling, and precise dimensional accuracy required for different blown film specifications.

Specification: 
Screw diameter:Ø15-Ø300    Aspect ratio:15-46
Product type:
For different plastic products screw can be used: ordinary type, pin type, barrier type, separation type, exhaust type and so on. 
Base material:
1)38CrMoAlA(JIS SACM645)        2)42CrMo(AISI 4140)
Process:
Heat treatment       Nitriding treatment

Technical Parameters:
Nitriding depth: 0.50mm-0.80mm                   Nitriding hardness: 900-1000HV               
Nitriding: <= Level 1                                        Surface roughness: Ra 0.4                  
Screw straightness: 0.015mm                           The hardness of the surface after chrome plating:≥950HV       
Chromium layer thickness: 0.025~0.085mm     Double alloy depth: 3mm

Our Benefits

1. Precision Melt Control and Mixing

Injection molding machine 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.

2. 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.

3. 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.

4. 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.