According to the production process of plastic products, plastic machinery can be divided into four categories: plastic mixing machinery, plastic molding machinery, plastic secondary processing machinery and plastic processing auxiliary machinery or devices. Plastic compounding machinery is used in the manufacture of various forms of plastic compounding, including kneading machines, plastic mixing machines (open and mixer), pelletizing machines, screening machines, crushers and grinders. Plastic molding machinery, also known as plastic processing machinery, is used for the molding of plastic semi-products or products, including press molding machine, injection molding machine, extrusion machine, blow molding machine, calendering machine, rolling machine, foaming machine, etc. Plastic secondary processing machinery is used for the reprocessing and post-treatment of plastic semi-products or products, including thermal forming machines, welding machines, thermal sealing machines, hot stamping machines, vacuum evaporation machines, flocking machines, printing presses, etc. Metalworking machine tools are also commonly used for plastic secondary processing. Plastic processing auxiliary machinery or devices to realize the rationalization of plastic processing process, including automatic metering feeding device, automatic scrap material recovery device, automatic injection molding product removal device, injection mold rapid replacement device, injection mold cooling machine, automatic thickness measuring device and raw material transportation and storage equipment. Such auxiliary machinery or devices have become an indispensable part of the automation of modern plastic processing.
The degree of perfection of plastic machinery directly affects the quality, output and cost of plastic semi-products or products, so it must be able to adapt to the changes in temperature and stress during the plastic mixing process, as well as the resulting changes in the performance of molten materials, and to adapt to special conditions such as chemical corrosion and mechanical wear. The specialization of plastic grade, the development of engineering plastics, the emergence of composite materials, and the development of plastic product structure large-scale, lightweight and thin-walled technology require plastic machinery to achieve: for the purpose of product production; High speed, labor saving, automation to improve product production efficiency; To ensure the minimum precision of product specifications and quality errors; Low energy consumption, less footprint, easy operation and maintenance and safety.
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