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81. The process of plastic molding(1)

We all know the plastic molding is very important in our life. So it becomes very popular. If you want to go into a plastic molding organization, you should know the different process of the plastic molding.

1. Injection Molding

In Injection Molding, melted plastic is forced into a mold cavity. When cooled, the mold can be removed. This plastic molding procedure is frequently utilized in mass-production or prototyping of your product. Injection molding machines had been made in the 1930's. This may be utilized to mass produce toys, kitchen utensils, bottle caps, and cell phone stands to name a couple of.

2. Blow Molding

Blow molding is like injection molding except that hot liquid plastic pours out of your barrel vertically inside a molten tube. The mold closes on it and forces it outward to conform for the inside shape on the mold. When it's cooled, the hollow part is formed. Examples of blow molding goods are bottles, tubes and containers.
Equipments necessary in setting-up a blow molding organization are fairly larger than injection molding.

3. Compression Molding

In this type of plastic molding, a slug of tough plastic is pressed among two heated mold halves. Compression molding normally makes use of vertical presses instead on the horizontal presses utilized for injection and blow molding. The components formed are then air-cooled. Prices of equipments utilized for compression molding are moderate.

4. Film Insert Molding

This plastic molding technique imbeds an picture beneath the surface of your molded part. A material like film or cloth is inserted into a mold. Plastic is then injected.