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what is injection molding?

Edit: ABIS Mold Technology Co.,Ltd    Date: Jul 08, 2017
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To put is basically, injection molding is the process of forcing melted plastic in to a mold cavity. Once the plastic has cooled, the part can be ejected. It is useful when the parts are too complex or cost prohibitive to machine. With this process, many parts can be made at the same time, out of the same mold

Injection Molding is the process of forcing melted plastic in to a mold cavity. Once the plastic has cooled, the part can be ejected. Injection molding is often used in mass-production and prototyping. Injection molding is a relatively new way to manufacture parts. The first injection molding machines were built in the 1930's.

Injection molding is a plastic-forming process used in the production of most (about 70%) of plastic parts. Other plastic-forming processes include blow molding, pressure-forming, and thermo-forming. Injection molding is generally used in the high-speed manufacture of low-cost, high-volume parts, like videocassette cases, plastic cups, printer parts, refrigerator parts, automotive parts, and other electronic parts like casing, gear.

The process of injection molding begins with a barrel full of hot, liquid plastic. The plastic is rammed at high pressure into a mold. Once the plastic fills the mold, it is allowed to cool and solidify. The finished part is then extracted (usually automatically) from the mold. You will learn more about the injection molding process in next week's lab. This week, we will concentrate on mold design and analysis.

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