Guide to Plastic injection Molding and Its Benefits
Today, components of large products that we use today are made using a process called injection molding. Ice trays, bottle caps, and bins are just some of the products that are made from injection molding which uses mold cavities where molten material is poured and solidified.
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. Plastic is known for its durability, rust resistance, and toughness despite its being low in density. In particular, thermoplastic allows manufacturers to produce very complex shapes at a much lower cost than other materials. Because it is pliable it can take on any shape and when it is cooled, the shape hardens. Plastic becomes brittle in very cold temperatures and this is why they put additives to prevent this. And when a product is finished, you can reheat it to form other shapes.
Imagine a world where all plastic products have to be created by hand. We would be left with misshapen and structurally weak objects that wouldn’t last a day. Injection molding ensures precision in design and soundness in structure. The process of injection molding has other benefits like the ones given below.
Since the molding cavities can only contain the amount of plastic that is needed, it minimizes or eliminates scraps. You save money with this and you will have less problem with waste management.
Scrap plastic can still be used for other important parts and components. The quality of this waste plastic is the same as with virgin plastic. There is a great minimization of waste.
Labor cost for using injection molding is a lot lower than what it would cost to mold plastic by hand. There is high productivity and the time taken to manufacture products is drastically cut down.
There are little or no defects with injection molded plastics. Sometimes there are defects in the resulting plastic product with the common defects being burrs, uneven layers, blisters, voids, and empty spaces on the surface. Defaced products are remade.
Though plastic is known to many as non-biodegradable, it is highly recyclable and plants can use discarded and unused plastic parts.
The injection molding process takes care of most of the work which makes the finishing time shorter. It reduces further the cost of labor and time.
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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