Why Plastic Injection Molding Is Useful
Injection molding is useful in making components of large products that we use today. 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. Below we will look at plastics and how this material is the best in terms of cost and recyclability.
Plastic is a low cost alternative to expensive metal and glass. Plastic is durable, rust-free and very tough considering that it is low in density. If you use thermoplastic, it is possible to produce complex shapes at a much lower cost than any other material. Its pliability allows it to take o almost any shape but hardens when cooled. 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 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. 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 and the time taken to manufacture products is drastically cut down.
There are little or no defects with injection molded plastics. 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. They remake products that are defaced.
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.
Molded plastic products are often the only solution where metal and glass cannot be used. Industries like automotive, oil, gas, and electronics use plastic on a regular basis.