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Injection Molding Plastic

Plastics are synthetically produced non-metallic compounds. It can be molded into various forms and toughened for commercial use. Plastic molding products can be seen everywhere. Examples are jars, protecting caps, plastic tubes, grips, toys, bottles, cases, accessories, kitchen implements and a load more.

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Even the keyboard and the mouse that you use are made thru plastic molding. Even the plastic parts of the chair that you are sitting on are created this way.

The basic idea in plastic molding is inserting molten liquid plastic into a prepared formed mold, for instance the mold of a bottle. It is going to be then allowed to cool, then the mold will be removed to bare the plastic bottle.

Plastic molding can also custom-mold a wide variety of plastic products including : garden pots, cupboards, office trays and boxes, barriers, barricades and traffic signage and displays for product and selling promotions.

If you are planning to go into plastic molding business, you should first know the different processes. Choose from a plastic molding process that fits your position, your expertise, and your resources. Here are basic definitions of various techniques of plastic molding.

The Plastic Molding Processes :

1. Injection Molding

In Injection Molding, liquified plastic is forced into a mold hole. Once cooled, the mold can be removed. This plastic molding process is sometimes used in mass-production or prototyping of a product. Injection molding machines were made in the 1930’s. These can be employed to mass produce toys, kitchen implements, bottle caps, and cell phonephone stands to name a couple.

two. Blow Molding

Blow molding is like injection molding except that hot liquid plastic pours out of a barrel vertically in a molten tube. The mold closes on it and forces it outward to comply with the inside shape of the mold. When it is cooled, the hollow part is made. Examples of blow molding products are bottles, tubes and boxes.

Equipments required in setting-up a blow molding business are comparatively higher than injection molding.

3. Compression Molding

In this kind of plastic molding, a slug of hard plastic is pressed between 2 heated mold halves. Compression molding usually uses vertical presses rather than the horizontal presses used for injection and blow molding. The parts formed are then air-cooled. Costs of equipments used for compression molding are moderate.

four. Film Insert Molding

This plastic molding technique imbeds an image beneath the outside of a molded part. A material like film or fabric is inserted into a mold. Plastic is then injected.

5. Gas Assist Molding

Also called gas injection molding is used to create plastic parts with hollow interiors. Partial shot of plastic is then followed by hi-pressure gas to fill the mold cavity with plastic.

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