Function and Classification of Extrusion Head


Ningbo Fangli Technology Co., Ltd. is a mechanical equipment manufacturer with nearly 30 years’ experiences of plastic pipe extrusion equipment, new environmental protection and new materials equipment. Since its establishment Fangli has been developed based on user’s demands. Through continuous improvement, independent R&D on the core technology and digestion & absorption of advanced technology and other means, we have developed PVC pipe extrusion line, PP-R pipe extrusion line, PE water supply / gas pipe extrusion line, which was recommended by the Chinese Ministry of Construction to replace imported products. We have gained the title of “First-class Brand in Zhejiang Province”.


The main functions of pipe extruder head are:

1)  Turn the spiral motion of the molten material from the barrel into a linear motion;

2)  Form the necessary molding pressure to ensure the density of the product;

3)  Further plasticize the material evenly;

4)  Molded products.


There are many kinds of extruder heads, and the common classification methods are as follows.

1) According to the use of products, bar head, pipe extrusion head, plate extrusion head, special-shaped extrusion head, granulation head, film blowing head, cable head, multi-color product head and spiral pressure pipe head, etc.

2) According to the direction of the material passing through the machine head, it is classified into a straight machine head and a horizontal machine head. In a straight head, the direction of material flow is the same as the axis of the screw, such as a hard tube head; in a horizontal head, the direction of material flow is at an angle to the axis of the screw, such as a cable head .

3)  According to the pressure, the low-pressure head (material flow pressure is less than 4 MPa), the medium pressure head (material flow pressure is 4 ~ 10 MPa) and the high-pressure head (material flow pressure is greater than 10 MPa).


If you need more information, Ningbo Fangli Technology Co., Ltd. welcomes you to contact for a detailed inquiry, we will provide you with professional technical guidance or equipment procurement suggestions.

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