Injection Mold - Processes, Applications and Other Facts Regarding the Product

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An injection mold is used in manufacturing processes in order to produce parts that come from plastic materials. The process is better known as injection molding. It starts when the thermoplastic or thermosetting plastic materials are fed into a barrel - usually heated - and mixed then forced into a cavity where it is left to cool. Cooling the materials will lead to hardening in order to follow the shape of the mold cavity.

Industrial engineers or designers are primary users of an injection mold. Molds are later enhanced by mold makers once the design have been produced by the engineer. The mold may be created out of several materials like steel or aluminum metals. Basic applications of the industrial product include the production of vehicle panels of cars or other smaller components in the automotive industry.

Characteristics of the injection molding process

In order to understand the process better, it is deemed fit to characterize the steps involved. It makes use of a ram or other screw-type plungers in order to make sure that the molten plastic is placed properly inside the mold cavity. Once it follows the shape of the mold, it may result to either of two forms - open or solid ended shapes. From the production, it will often be noticed that a parting line or gate mark may be seen. Furthermore, pin marks after ejecting the output may be visible.

Applications for an injection mold

When the injection molding process was introduced in the market, it catered to the production of simple products like buttons and combs. With the progression of manufacturing industries, other products have been created out of the mold. The common applications go to medical, aerospace and consumer industries as well as packaging, plumbing and construction.

Specific applications of the process extend to the production of bottle caps, containers, milk cartons, automotive dashboards and other products that may be created out of plastic. The process is considered very crucial in the world of part manufacturing. While injection molding may require high costs of investment, it is favored because of the lower labor costs and minimal losses on scrap.

Most common materials used in the process

Aside from thermoplastic and thermosetting plastic materials, elastomers are recommended in producing an injection mold. As years pass, more materials have been adapted in the process. Alloys and polymers like epoxy, phenolic, polyethylene, nylon and polystyrene are commonly used nowadays.

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Richard C. Milton has 1 articles online

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Injection Mold - Processes, Applications and Other Facts Regarding the Product

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This article was published on 2010/03/31