Production Technique of Ginde PAPR Pipe

1. Production Equipment

PE-AL-PPR,The German UNICOR aluminum plastic composite pipe production line, which is the most advanced production line at present internationally, has been completely introduced by our company. Many advanced techniques have been adopted, such as extrusion together with the five layers, ultrasonic lap welding, etc. Compared with other production lines of aluminum plastic composite pipe, it mainly boasts the following five major advantages:

1) Ultrasonic welding: ultrasonic welding technique has been used at the joint of aluminum band, which leads to a large welding area of aluminum band and high welding strength;

2) Extrusion together with the five layers: compared with other coating process, the hot-melting adhesive has a excellent fluid performance, thus a high adhesive strength betweenaluminum layer and plastic is obtained;

3) On-line inspection with pressure forced inside the pipe: A pressure ranged between 0.6~0.8 MPa is forced on line, Adhesive strength is increased as the aluminum layer and plastic tightly adhere with each other. The pipe would crack on spot in case of existence of defect on welding. Therefore,up-to-standard rate out of factory may reach 100%;

4) Synchronizing controller: computer control is used along the complete production line, thus uniform and reliable product quality is able to be realized;

5) Optical inspection instrument: inspect outer wall mass and outer diameter of the pipe on-line, increasing product precision.

2. Raw Material

Ginde aluminum plastic composite pipe mainly include five kinds of major raw material, namely plastic (hot water material, cold water material), hot melt adhesive, colour batch, processing aid agent, and aluminum band. Raw material of Ginde company are all imported from famous manufacture in North AmericaEurope. Major suppliers include The Dow Chemical Company in America, Philips in America, Polyplast in Germany, DSM in Holland. Etc. Major raw material, such as polyethylene DOWLEX2344 is tested by Karlsruhe water quality test station, which would prove that pipe made of such material is suitable to be used for drinking water; data list on material safety provided by DSM Company shows that hot melt adhesive Ypares produced by the company has neither toxicity nor hypersensitivity after long term utilization. In addition, Ginde aluminum plastic composite pipe does not have heavy metals such as mercury, lead, durin production. It is clean and friendly to environment.

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