Plastic pipe precision extrusion molding technology

Beijing University of Chemical Technology in January 2004 introduced precision extrusion molding technology for plastic pipes. Precision extrusion molding technology is a molding process that achieves high-precision of product dimensions and high homogeneity of the microscopic morphology of the material by precisely controlling the elements of the extrusion process. Its process parameters in the extrusion process fluctuate very little, the extrusion equipment working state is stable, can greatly improve the accuracy of pipe extrusion, save raw materials, it is understood that after precision extrusion molding, about 2.4% of raw materials can be saved The cost effectiveness is very obvious. Precision extrusion molding technology is particularly suitable for the production of medical plastic pipe with complex pipe dimensions, multi-layered multi-cavity, and high precision requirements. At present, China's medical plastic catheter basically relies on imports. It is reported that the cost of introducing a catheter from abroad at a hospital in Beijing is nearly 300,000 US dollars per year. It can be seen that the research and development of precision technology to produce domestic medical catheters to replace imports has played a positive role in promoting the development of medical technology in China.
In addition to continuous innovations in the pipe industry in terms of process technology, in the formulation modification, the domestic pipe industry has also made great progress in recent years. For example, the cost of PVC pipe is low and the installation technology is mature. The amount of PVC pipe is currently the highest among various plastic pipes, but it is poor in temperature resistance and affected by the weather. This affects its use range and is being used by higher costs. Polyethylene, PPR and other pipe materials are used instead.