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Injection Moulding

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Injection Moulding

injection moulding e1327522611751is a manufacturing process for producing parts from both thermoplastic and hermosetting plastic materials. Material is fed into a heated barrel, mixed, and forced into a mold cavity where it cools and hardens to the configuration of the mold cavity. After a product is designed, usually by an industrial designer or an engineer, molds are made by a moldmaker (or toolmaker) from metal, usually either steel or aluminum, and precision-machined to form the features of the desired part. Injection molding is widely used for manufacturing a variety of parts, from the smallest component to entire body panels of cars.

Hint: click on the image to the right to watch the "Injection Moulding 101" video.

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Roto Moulding

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Rotational Moulding,

Rotocasting machinealso known as rotomoldingrotocasting or spin casting, is a molding process for creating many kinds of mostly hollow items, typically of plastic.

A heated hollow mold is filled with a charge or shot weight of material, it is then slowly rotated (usually around two perpendicular axes) causing the softened material to disperse and stick to the walls of the mold. In order to maintain even thickness throughout the part, the mold continues to rotate at all times during the heating phase and to avoid sagging or deformation also during the cooling phase. The process was applied to plastics in the 1940s but in the early years was little used because it was a slow process restricted to a small number of plastics. Over the past two decades, improvements in process control and developments with plastic powders have resulted in a significant increase in usage.

Hint: click on the image to the right to view the "Rotational Moulding 101" video.

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