How Parallel Twin Screw Barrels Improve Extrusion Efficiency?- Zhoushan Jiading Plastic Machinery Co., Ltd.

Parallel twin screw barrels play a crucial role in improving extrusion efficiency in plastic processing. They offer numerous advantages that enhance the extrusion process, leading to higher productivity, better product quality, and cost savings. Here's how parallel twin screw barrels improve extrusion efficiency:

1.Enhanced Mixing and Dispersion:Parallel twin screw barrels excel at achieving efficient and thorough mixing of additives, colorants, and fillers with the base polymer. The intensive kneading and shearing action between the two screws create multiple interfaces, leading to enhanced dispersion of additives throughout the melt. This level of mixing ensures uniform distribution of additives, resulting in consistent product properties and improved material performance.

2.Wide Range of Applications:Due to their versatility, parallel twin screw barrels can handle various polymers, including polyethylene, polypropylene, PVC, and engineering plastics. Their ability to process a wide range of materials makes them suitable for diverse applications, from producing simple profiles and pipes to complex multi-layer structures.

3.Controlled Residence Time:Parallel twin screw barrels offer excellent control over residence time, the duration the polymer spends in the barrel during processing. Controlling residence time is vital when handling temperature-sensitive materials, preventing thermal degradation and ensuring consistent melt quality.

4.Efficient Heat Transfer:The parallel arrangement of the screws in twin screw barrels allows for efficient heat transfer along the extrusion process. This ensures consistent and uniform heating of the polymer, reducing the risk of hotspots and ensuring a homogeneous melt.

5.Reduced Material Degradation:With reduced shear rates on the polymer, parallel twin screw barrels minimize material degradation during extrusion. This feature is particularly beneficial for processing shear-sensitive materials, such as certain engineering plastics, ensuring the preservation of their molecular integrity and properties.

6.High Throughput Rates:Parallel twin screw barrels enable higher throughput rates compared to single screw extruders. The two screws working in tandem increase the material handling capacity, allowing manufacturers to achieve higher production volumes and meet growing demands.

7.Reliable Feeding and Conveying:The self-wiping effect of parallel twin screw barrels ensures efficient feeding and conveying of the material through the extruder. This design minimizes material stagnation and eliminates dead zones, leading to consistent extrusion and improved overall process reliability.

8.Process Stability and Control:Parallel twin screw barrels offer better process stability and control due to their ability to precisely manage temperature and material mixing. This enhances overall product quality and reduces the occurrence of defects or inconsistencies in the extruded output.

9.Reduced Scrap and Waste:With improved process control and consistent product quality, parallel twin screw barrels help minimize scrap and waste production. Manufacturers can achieve higher yield rates and reduce material wastage, contributing to cost savings and sustainability.

10.Better Foaming and Reinforcement:For applications requiring foaming or reinforcement, parallel twin screw barrels can be equipped with special mixing elements to facilitate the incorporation of blowing agents or fibers, ensuring uniform dispersion and efficient processing.

11.The parallel twin screw barrels offer a wide range of benefits that significantly improve extrusion efficiency in plastic processing. Their ability to enhance mixing, melting, and material handling capabilities, combined with better process control and reduced material degradation, makes them a preferred choice for manufacturers seeking higher productivity, consistent product quality, and cost-effectiveness in their extrusion operations. By incorporating parallel twin screw barrels into their extrusion lines, manufacturers can stay competitive in the market and meet the demands of various applications while maintaining a high standard of product performance.

Counter-rotate parallel twin screw barrel for pvc profile extrude

Twin screw and barrel type: CINCINNATI, BATTENFELD, KRAUSSMAFFEI, BAUSANO, MAPLAN and AMUT model spares.

The screw of the series consists mainly of two parallel cylindrical screws, which rotate to the opposite direction. Parallel double screw rotational speed is low, less heat, shear stability of the materials in the barrel, uniform, screw of material conveying ability is strong, have good exhaust effect at the same time, is conducive to the stability of product quality.

The main applications: Includes PVC pipe & profile extrude, PP/PE sheet product.