Extrusion process of plastic pipes


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 extrusion process of plastic pipes is divided into three stages:


1. Plasticization of raw materials, that is, through the heating and mixing of the extruder, the solid raw materials become uniform viscous fluid.


2. Forming, that is, under the action of the extrusion parts of the extruder, the molten material passes through the molding head continuously at a certain pressure and speed, so as to obtain a certain section shape.


3. Cooling and forming, that is, through sizing and cooling treatment, the molten material will fix the obtained shape and change into a solid state (plastic pipe).


The above three stages are realized by the main machine and auxiliary machines, or extrusion unit. Specifically, the main machine is an extruder, and the auxiliary machine consists of an extrusion head, a vacuum calibration device, a cooling device, a haul off machine, a cutting machine and a pipe tip table.



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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