Advantages of Plastic Injection Molding
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.
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 durable, rust-free and very tough considering that it is low in density. 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. 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. We will have products with bad shapes and are structurally weak. Injection molding ensures precision in design and soundness in structure. Here are some of the advantages of this invaluable process.
If molds are used the amount of scrap is reduced or eliminated because the cavities are shaped to contain only the amount of plastic that is needed. You benefit on money savings and lesser problems 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. Waste is minimized or almost eliminated.
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.
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. 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. 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. Plastic is used by industries like automotive, oil, gas, and electronics on a regular basis.