Plastic parts processing has always been one of the industries that occupy an important position in the market. As various plastic parts products will be used in the development of various industries, the development of precision plastic parts processing is getting better and better.
Precision plastic parts processing, also known as precision plastic parts molding processing, is a general term for various processes that convert synthetic resin or plastic into precision plastic products, and is the largest production department in the plastics industry.
The processing of precision plastic parts mainly uses ethylene as the main raw material, and propylene, 1-butene and hexene as copolymers. Under the action of a catalyst, sludge polymerization or gas phase polymerization process is adopted to obtain a finished product with uniform particles through flash evaporation, separation, drying, granulation and other processes. These include sheet extrusion, film extrusion, pipe or profile extrusion, blow molding, injection molding
and rotational molding. Commonly used processing methods are:
1. Extrusion molding: The grades used for extrusion molding production are generally melt index less than 1, medium to wide MWD.
2. Blow molding: More than 1/3 of HDPE sold in the United States is used for blow molding.
3. Injection molding: A common processing method in the processing of precision plastic parts.
4. Rotational molding: Materials using this processing method are generally crushed into powder materials to melt in a thermal cycle.
Fifth, film: PE film processing generally adopts ordinary blown film processing or flat extrusion processing.
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