Three categories of general introduction - plastic processing machinery Union star packaging machinery

Plastics machinery is used in the plastic processing industry the floorboard of all kinds of machinery and equipment. Some of the fluid and solid conveying, separation, crushing, grinding, and dry and other general machinery and equipment, also occupies an important position in the plastic processing industry, so often as plastic machinery. Modern plastics machinery design and manufacture, besides depends on the development of mechanical engineering and materials science, especially with plastic engineering is closely related to the progress of the theoretical research. According to the plastic products production process, plastic machinery can be divided into plastic mixing machines, plastic molding machines, plastic secondary processing and plastic processing machinery auxiliary machinery or equipment such as four major categories. Plastic mixing machine is used for all kinds of plastic mixing material manufacturing, including kneading machine, plastic mixing mill ( Mixing mill and mixer) , dicing machine, screening machine, crusher, grinding machine and so on. Plastic molding machine, also known as plastic processing machinery, for plastic processing or products of tire, including pressure molding machine, injection molding machine, extrusion molding machine, blow molding machine, rolling machine, rolling machine, foam machine, etc. Plastic secondary processing machinery for plastic semi-product or products reprocessing and post-processing, including hot forming machine, welding machine, heat sealing machine, hot stamping machine, vacuum evaporation machine, flocking machine, printing machine, etc. Metalworking machine tools are also used in plastic secondary processing. Plastic processing auxiliary machinery or equipment in order to realize the rationalization of plastic processing process, including automatic measuring feeding device, automatic scrap recycling equipment, injection molding products automatically remove device, injection mould rapid replacement device, injection mold cooling machine, automatic thickness measurement device and raw material conveying and storage equipment. This kind of auxiliary machinery or equipment, plastic processing process automation has become a modern indispensable part. The perfect degree of the plastics machinery directly affect the quality of the semi-product or plastic products, production and cost, and therefore must be able to adapt to the plastic with mixed process of the change of temperature and stress, and the melting caused by the material performance, change and adapt to chemical corrosion and abrasion and other special conditions. In recent years, plastic grade of specialty, the development of engineering plastics, composite materials, plastic products such as large scale, lightweight and thin wall structure technology requirements of plastic machinery: for products specialized production purposes; High speed, energy saving, automation, in order to improve the products production efficiency; Ensure the quality of product specifications and the precision degree of the minimum error; Low energy consumption, covers an area of less, easy and safe operation and maintenance. There are many different kinds of plastic machinery. Overall, according to the processing technology is divided into three categories of extrusion machines, injection molding machine and blow molding machine. Squeeze out the basic mechanism is simple & ndash; — A screw rotation in the cylinder and the plastic to push forward. Screw is actually a inclined plane or slope, wrapped around the center layer. Its purpose is to increase the pressure in order to overcome the resistance of the larger. In terms of an extruder, there are three kinds of resistance to overcome: solid particles ( Feed) Of wall friction and screw rotation (several times before Feed zone) The friction between them. The adhesive force of the melt on the wall; The melt is pushing forward its internal logistics resistance. Plastic machinery and plastic machinery, this can be confirmed from the localization of plastic and plastic. In the eyes of the industry, plastic and plastic is a kind of things. Previously, domestic factories are called plastics factory, while Hong Kong and Taiwan said plastics factory is a plastic company. A number of foreign-funded enterprises in order to communicate with foreign convenient, basically are hanging plastic co. , LTD. * * * * brand. Three, blow molding machine, blow molding is commonly used method of manufacturing hollow thermoplastic products, main products are tube membrane and hollow container. Blow molding machine could make preforming products plasticization by heating, and then enter the blow mould make type, this method is mainly used for high speed high production of PET bottles and BOPP bottles of production, namely two step process; Blow molding can also be combined with injection molding process become injection blowing machine, this also is the commonly used method in the production of PET containers; Blow molding process can also be combined with extrusion process, adapt to a broader range of extrusion blow molding equipment, can produce the products is also more abundant, products including multi-layer composite membrane and all kinds of polyolefin hollow container, widely used in food, medicine and cosmetics industry.