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Zhejiang Jiayue Machinery Manufacturing Co.,Ltd
Add:No.7 Changxin Road, Yancang Subdisctrict, Dinghai, Zhoushan, Zhejiang, China
Mobile: +86-15958098091(Wechat, WhatsApp)

Contact Person: Jade Le

Single Screw for Extrusion Machine

Single Screw for Extrusion Machine

Single Screw for Extrusion Machine Product Parameter Advantages of Single Screw Extruders Production Process Application Area Applications in Plastic Products Applications in Plastic Machinery The Process of Extrusion Using Single screw extruders The extruder consists of the following: barrel,...

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Product Details

Single Screw for Extrusion Machine


Product Parameter

Single Screw for Extrusion Machine

Hardness after hardening and tempering

HB240 – 280

Nitride hardness

HV850 – 1000

Screw Diameter


Nitride Brittleness

less than grade 2

Hardness of nitration

HV900-1060 (HRc56°-65°)

Screw straightness


Single Screw for Extrusion Machine


Single Screw for Extrusion Machine

Applications in Plastic Products


The Process of Extrusion Using Single screw  

As a common extruder equipment, the single-screw extruder is used in the plastics processing industry. What is the principle and structure? The following is an analysis of the principle of the single-screw extruder from the conveying section, the compression section and the metering section of the extruder.

The single-screw extruder is generally divided into three sections in the effective length. The effective length of the three sections is determined according to the screw diameter, the pitch and the screw depth, and is generally divided into one third.

The high-efficiency single-screw extruder adopts double-stage integral design to strengthen the plasticizing function, ensuring high-speed and high-performance stable extrusion, special barrier comprehensive mixing design, ensuring the mixing effect of materials, high shear and low melting temperature. High-performance low-temperature and low-pressure metering extrusion of materials is guaranteed. Design concept and features: High-speed, high-yield extrusion on a high-profile basis.

Single screw extruder principle

The last thread of the material port starts to be called the conveying section. The material here cannot be plasticized, but it must be preheated and compacted. In the past, the old extrusion theory believed that the material here was loose, and later proved that the material was actually solid. Plug, that is to say, the material here is squeezed like a solid plug, so as long as the completion of the transport task is its function.

The principle of single-screw extruder: when the second section is called the compression section, the volume of the groove is gradually reduced from large to large, and the temperature is to reach the degree of plasticization of the material. Here, the compression is generated by the conveying section three, where it is compressed to one. This is called the screw. The compression ratio -3:1, some machines have also changed, and the finished plasticized material enters the third stage.

The principle of single-screw extruder: The third section is the metering section where the material maintains the plasticizing temperature, just the accurate and quantitative delivery of the melt material as the metering pump is supplied to the machine head. At this time, the temperature cannot be lower than the plasticizing temperature. Slightly higher.

The single-screw extruder is mainly used for extruding soft plastics such as soft and hard polyvinyl chloride and polyethylene. It is matched with the corresponding auxiliary machine (including the forming machine head) to process a variety of plastic products, such as membranes and tubes. Plates, ribbons, etc., can also be used for granulation.

The plastic extruder has advanced design, high quality, good plasticization and low energy consumption. It adopts involute gear transmission, featuring low noise, stable operation, large bearing capacity and long service life.

Single screw extruder use

Pipe extrusion: suitable for PP-R pipe, PE gas pipe, PEX cross-linked pipe, aluminum-plastic composite pipe, ABS pipe, PVC pipe, HDPE silicon core pipe and various co-extruded composite pipes.

Extrusion of sheet and sheet: suitable for extrusion of profiles and sheets of PVC, PET, PS, PP, PC, etc. Extrusion of other various plastics such as silk, rods, and the like.

Extrusion of profiles: Adjusting the extruder speed and changing the structure of the extrusion screw can be applied to the production of various plastic profiles such as PVC and polyolefin. Modified granulation: suitable for blending, modifying and reinforcing granulation of various plastics.


Q: Where is your factory located?

A: In Zhoushan City, Zhejiang Province, close to Ningbo and Shanghai.

Q: How about your screw barrel quality compared to Machine suppliers?

A:  In fact, we have many machine supplliers and agents buying screw barrel from us, the quality and price are both competitive .

Q: What's your strength?

A: Well-experienced in designing and producing. Good reputation in our customers

Hot Tags: single screw for extrusion machine, China, suppliers, factory, customized, in stock, made in China


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