Guide to Plastic injection Molding and Its Benefits
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.
Glass, metals and thermoplastics are the materials that can be used for injection molding. In the discussion below, we will look at plastics which is the best materials among others in terms of cost and recyclability.
As we know plastic is the low cost alternative to expensive metal and glass. Plastic is known for its durability, rust resistance, and toughness despite its being low in density. If you use thermoplastic, it is possible to produce complex shapes at a much lower cost than any other material. 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. If you want to form other shapes from a finished product, you can just simply reheat it.
Imagine if all plastic products in the world were handmade. These products can come out misshapen and structurally weak objects. Injection molding ensures precision in design and soundness in structure. Here are some of the advantages of this invaluable process.
Minimizing or eliminating scrap is one of the benefits of using injection molding because the cavities can only contain the amount of plastic that is needed. 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. You can compare the quality of this waste plastic to virgin plastic. Therefore waste is minimized.
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.
Injection molded plastics usually have very little or no defects. The common defects for this type of molded plastic includes burrs, an uneven layer, blisters when raised bits produce a rough and uneven surface, voids, empty spaces on the surface. Defaced products are remade.
People think of plastic as bad because it is non-biodegradable but it is highly recyclable like 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. Labor cost and time is further reduced.
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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