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Compression Mould and Injection Mould

Injection moulds are parts that give plastic shape and size in moulding. Although the structure of the mould may vary due to the variety of plastics and properties, the shape and structure of the plastic products and the type of injection machine, but the basic structure is consistent.

The injection mould is divided into thermosetting plastic mould and thermoplastic mould according to the moulding characteristics. In accordance with the moulding process is divided into the mould, blowing mould, casting mould, hot forming mould, extrusion mould, injection mould and so on, the thermal model can be divided into the overflow type material overflow way, half overflow type, not overflow type, and injection mould can be divided into cold runner mould and hot runner mould by means of pouring system. It can be divided into movable type and fixed type by means of loading and unloading. The classification of mould is also distinguished according to the processing technology. The injection mould is used to inject the molten plastic with certain speed and pressure into the mould cavity of the mould. After the plastic cools, open the mould and take out the moulded plastic products.

Compression mould add the plastic raw materials directly in the open mould cavity, make mould closing and plastic is flow state and full of cavity under heat and pressure, and then the chemical crosslinking or physical cooling products hardening finalize the design.

Compression mould heat the plastic sheet to press the moulding by heated mould, then open the mould, take the moulded product out and put it into the cold water to cool it. Compression moulding is an important technical process in the process of moulding, which is widely used in industrial production and industrial processing and plays an important role in people's life. Usually will powder, granular, granular, flake, even to make products of similar shape and material slab, in a heated mould cavity, and then closed die pressure, make its shaping and curing or sulfide, then through stripping products, the method is particularly suited to thermosetting plastics processing. The disadvantage is that the production cycle is long, the efficiency is low, the product dimension precision is poor.

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