What are the plastic products used in heavy trucks, and how do they form?
5 、 blow molding, blow molding, used in thermoplastics. This is the molten plastic in the mold, under the compressed air pressure, the plastic blow up, close to the mold surface. But, by punching and demoulding products. The production of various types of hollow containers, also can produce thin film, and thin. The land, forming a plurality of heating heating molding thermoplastic. This is the plastic sheet is heated into elastic state, and then subjected to pressure to attach to the mold molding. Multi disc products. Production of dishware, paint, plastic foam molding foaming foot add foaming agent, foaming and foam injection mould making, solidifying products. The utility model is used for making cushioning packages for precise instruments and meters. It is used for molding, molding the thermosetting plastic. This is a powder, flake or granular thermosetting resins and additives, directly close mold in mold, heating, pressurizing, plastic and liquefaction, chemical reaction and curing, cooling after the products. Production of lumber and electrical appliances, machinery parts, 9, casting molding casting molding for jade. The thermosetting plastic molding powder is placed in the material barrel heating to heat plasticizing, pressed into the mold, and the product complete solidification under pressure. Complex products production needs. A metal block 0, casting casting for forming solid thermal plastic. It will plasticized thermosetting plastic injection mould, curing under normal pressure, cooling and demoulding to obtain the products. The production of electronic, electrical and metal insert element
Three 、 extrusion molding, extrusion molding, used in thermoplastics. This is the plastic melt. The head of the plasticizing extruder die mouth gap extrusion, and profile shape and die similar. The production of sheet metal, tubes, rods, wire, profiles, etc. four, injection molding injection molding for thermoplastics. It is extruded into a phase similarly, the difference is the melt through the nozzle into the closed mould, solidification in a mold products. Multi production small package boxes, daily necessities, special-shaped parts, etc., it can also be used for lively plastic processing
There are several forming methods commonly used. First, calendering calendering for thermoplastics. It is through Plasticating plastic, sent to several groups of parallel arrangement, reverse rotation of the heat roller, by repeatedly calendering products. Production of film or sheet. Two, casting casting use dry plastic. It is soluble in the solvent of plastic, due to weight andspread to continuous operation of the metal belt, become thin layer of uniform thickness, then heating apparatus soft volatile agent, curing products, production of film or sheet.
