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3 Kinds of Plastic Molding Process

Posted on November 2, 2018 in WEB

Commonly, you will find two main types of plastic molding, like thermoplastics and thermosets. The main difference between those 2 types of plastics would be that the thermoplastics are meltable at temperature that is high while thermosets will harden at high temperature.

The real difference above is generally caused by the polymers which form those 2 plastics. Thermoplastics have polymer which look as a chain of atom in one dimensional string. Since they are melted at temperature which is high, it could be reshaped. On the contrary, thermosets are formed from a polymer with three dimensional chains so they’re able to help keep their shape. You will find a good deal of processes which can be used for shaping or even molding plastic using either thermosets or thermopastics. It’s also easy to use the combination of those two types.

You’ll find a lot of types of molding process , for example extrusion, injection molding, and the mix of the two processes that is known as blowing molding.

Extrusion molding process starts with raw plastics like powder, pellets, and beads. First of all, the plastic will be fed to a revolving chamber. The chamber which is also referred to as extruder is going to turn and melt the plastic. The melted plastic can be formed to the shape you need. Then, Automotive Injection Mold finished product is dropped on the conveyor belt to be cooled with water. The next phase is cutting and finishing touch. The things which are usually made through extrusion are also, sheets, and films pipes.

Injection molding is yet another process of molding. The basic principle used for this process is commonly the same as the extrusion. The raw plastic will be fed into the melting chamber by way of a a hopper. The distinction is the fact that the melted plastic is put into cold mold with pressure that is high. If the mold is cooler, the mini keyboard will be cleaned and finished. The items that are commonly made through injection molding are bottle caps, butter containers, lawn furniture, and in addition toys.


Blow molding is yet another kind of plastic molding process which uses a blowing method after the extrusion or perhaps injection molding. The melted plastic in the extrusion process uses a die to produce the heated plastic tube with the great mold around it. In the extrusion blowing, the compressed air will be blown through the tube so that it will force the plastic to make a hallow shape inside. With this particular method, the manufacturer does not have to attach different injection molded parts. On the other hand, injection blowing method blows the melted mold into the final shape in cold that is different Automotive Mold.

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