Equipment for Extrusion of PP-R 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 production of PP-R pipes requires transferring the excellent performance of the raw materials to the pipes, while achieving continuous and rapid extrusion to produce high-quality products.

A typical PP-R pipe production line consists of the following parts:

- Feeding system;

- Single screw extruder;

- Special PPR pipe mold;

- Sizing and cooling system;

- Traction machine;

- Printer;

- Cutter;

- Material storage machine;

- Control system.

During the processing of PP-R pipes, as the raw materials melt, and the processes of forming and cooling the pipe blank proceed, the mechanical properties of the pipes decrease due to the decomposition of the raw materials, the orientation of the molecular chains, or the crystallization during the cooling process.

Therefore, plasticization of the raw materials and cooling and sizing of the pipe blank are the keys to controlling the extrusion quality. For extrusion equipment, the following points should be met to better transfer the performance of the raw materials to the pipes:

I.Achieve a low melting temperature to minimize the decomposition of the raw materials during the melting and plasticizing process.

II.Ensure that the melt has excellent and uniform performance, and guarantee that the polymer molecular chains are not oriented along the longitudinal direction during the pipe blank forming process.

III.Achieve uniform cooling to reduce internal stress in the pipes.

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.