High Quality Plastic Pipe Machinery Must Meet the Following Requirements

1. High torque to ensure high extrusion volume
High quality plastic pipe machine must meet the following requirements
2. Reasonable screw diameter, high extrusion capacity
3. Ideal mixing effect, stable high extrusion volume
4. Strictly control the shearing effect to obtain the ideal material temperature and prevent significant changes in material properties due to degradation and cross-linking, thus enhancing processing adaptability
Only extruders with inclined groove liners can achieve higher extrusion rates in smaller models.
This extruder is equipped with a feeding liner with a special structure, and the inner hole surface has multiple inclined grooves. The number and depth of grooves also affect the output of the extruder. A spiral annular groove cooling system is arranged on the outer shell of the grooves to achieve temperature control in the feeding area and isolate it from the adjacent high-temperature barrel area. This structure greatly improves efficiency. Therefore, in this system, the output of the entire extrusion production line is not determined by the system’s back pressure or the depth of the screw groove in the simple feeding section, but by the coordinated conveying efficiency.
In order to better improve the plasticization efficiency of the main screw, the joint plasticizing machine first advocated a type of screw called “double stage screw”.
The basic principle of a double stage screw is to combine the advantages of two separate screws. In this double stage screw structure, the plasticization of materials is not solely dependent on the compression ratio and shear size, but mainly reflected in the mixing of materials and mutual heat exchange.

Therefore, the combination of a special inclined groove feeding liner and a double stage screw embodies a new concept of single screw machine, which has the following advantages:

1. Breaking through the traditional concept of production capacity can achieve the goal of high production capacity for small screws
2. Effectively and reasonably control the shearing of materials to complete their plasticization
Improved the processing adaptability of the extruder, truly achieving the effect of one machine for multiple uses and one rod for multiple uses. For a dual stage screw system, the material of the screw barrel should be improved compared to traditional nitride steel materials to enhance the toughness and bending strength of the screw and improve the sliding efficiency of the barrel screw. There are two methods for material and process treatment: one is to use bimetallic materials; The second method is to use alloy based sintered special alloy materials.
The direct reflection of traditional and new models is the significant improvement in extrusion efficiency. For plastic pipe extruder with the same diameter, the output level of new models is twice that of traditional models.

About Kairun Machinery:

With 17 years of specialized expertise, Kairun Machinery Co., Ltd. is a leading manufacturer in the plastics industry, seamlessly integrating R&D, production, sales, and comprehensive after-sales service.

By leveraging our extensive manufacturing history and deep technical heritage, we deliver high-performance, turnkey solutions for plastic extrusion. Our diverse product portfolio includes:

Pipe Production: Advanced lines for PE, PPR, PVC, and PVC-O pipes.
Specialty Extrusion: High-efficiency corrugated and spiral pipe extrusion systems.
Profiles / Strapping: PVC/WPC profile lines and PP/PET strapping tape production technology.
Processing / Recycling: High-speed mixing units, as well as integrated granulation and washing systems.

At Kairun, we turn technical accumulation into industrial excellence, ensuring our clients receive robust and innovative machinery tailored to their production needs.

Request Quote Now:

Send us your specifications and receive a tailored solution + best price from our engineers within 24 hours.

E-mail: [email protected]