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Advantages of Plastic Injection Molding

A process called injection molding is used for making most of the products we use today, particularly components of large products. How these products are done is through the use of mold cavities where molten materials are poured and solidified, and some examples of these products are ice trays, bottle caps, and bins.

The different kinds of materials that can be sued for injection molding are glass, metal, and thermoplastics. In the discussion below, we will look at plastics which is the best materials among others in terms of cost and recyclability.

Plastic is a low cost alternative to expensive metal and glass. Durable, rust-free and very tough despite its density, are the characteristics of plastic that makes it superior to others. Producing complex shapes at a much lower cost than other materials is possible with thermoplastic. Taking on any shape is possible with thermoplastic because it is pliable and it hardens upon cooling. In order to reduce brittleness when plastic is exposed to very cold temperatures, additives are added. And when a product is finished, you can reheat it to form other shapes.

Imagine if all plastic products in the world were handmade. We will have products with bad shapes and are structurally weak. Injection molding helps to achieve design precision and maintain structural soundness. Below are some of the other benefits of injection molding.

Since the molding cavities can only contain the amount of plastic that is needed, it minimizes or eliminates scraps. With this you get to save money on plastic, and you don’t have much waste as to worry about waste management.

Other parts and components can be made from waste plastic. The quality of this waste plastic is the same as with virgin plastic. There is a great minimization of waste.

The cost of labor for using injection plastic is not as high the cost for molding plastic by hand. There is high productivity with injection molding and it produces products at a much faster rate.

If we speak of defects, plastic made with injection molding have very little or no defects. Burrs, uneven layers, blisters, voids, and empty spaces on the surface are the common defects of this type of molded plastic. If the product is defaced then they are remade.

Though plastic is known to many as non-biodegradable, it is highly recyclable and plants can use discarded and unused plastic parts.

Since almost everything in the work is done in the injection molding, then the finishing time is shorter. The cost of labor and time is reduced further.

The only solution where metal and glass cannot be used in certain applications is the use of plastic injection molded products. Industries like automotive, oil, gas, and electronics use plastic on a regular basis.

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