Molding of the hottest plastic products

2022-08-15
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Molding of plastic products

the molding process of plastic products is not only a means to obtain the required products, but also improves the performance of plastics. For thermoplastics and thermosetting plastics, their molding methods are different. The common molding methods are as follows:

1, calendering molding

calendering molding is mostly used for thermoplastics. It is to send the plastic that has been plasticized into groups of parallel and reverse rotating hot rollers, and then calender it for many times to form products, and produce more films or sheets

2. Cast molding

cast molding multi-purpose dry thermoplastic. This is to spread the plastic dissolved in the solvent onto the continuously running metal belt due to its own weight to form a thin layer with uniform thickness, and then heat the instrument to volatilize the melting agent, and the products will be cured and formed, and more films or sheets will be produced

3. Extrusion molding

extrusion molding is mostly used for thermoplastic. This is to extrude the melt plasticized plastic through the gap of the die at the head of the extruder to form a profile similar to the shape of the die. It mainly produces plates, pipes, bars, wires, profiles, etc

4. Injection molding

injection molding is mostly used for thermoplastics. It is similar to extrusion molding, but the difference is that the molten plastic enters the closed mold through the nozzle and solidifies in the mold to produce products. It mainly produces small packaging boxes, daily necessities, special-shaped parts, etc. it can also be used for lively plastic processing

5. Blow molding

blow molding is mostly used for thermoplastic. This is to place the molten plastic in the mold and blow it up close to the inner surface of the mold under the pressure of compressed air. The products are made by punching and demoulding. The focus of the work is to stack 5 (1) 00 layers of graphene containers, and also produce films, sheets, etc

6. Heating molding

heating molding multi-purpose thermoplastic. This is to heat the plastic sheet into an elastic state, and then apply pressure to make it attached to the mold for molding, so as to produce more pots and plates

7. Foaming molding

foaming molding is enough to add foaming agent to the plastic, and then the foamed plastic is injected into the mold and cured into products. It is mainly used for making buffer packaging of precision instruments and meters

8. Molding

molding is mostly used for thermosetting plastics. This is to put powdery, sheet or granular thermosetting resins and additives directly into the mold cavity, where the weight, stroke, speed and other parameters of the slider are different. Close the mold, heat, pressurize, liquefy the plastic, and use it in the experiment of metal materials. It is often cured by chemical reactions. After cooling, it becomes products, and more plates, electrical and mechanical parts are produced

9. Cast jade molding

cast press molding is mostly used for thermosetting plastics. The molding powder is placed in the barrel, heated to plasticization, then pressed into the hot mold, and cured under pressure. More complex products that need to be embedded with metals are produced

10. Casting molding

casting molding is used for thermosetting plastics. It plasticizes thermosetting plastics, injects them into molds, solidifies them under normal pressure, cools and demoulds them to get products. It produces more electronics, electrical appliances and components with metal inserts

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