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.
There are many different kinds of materials which can be used for injection molding and this includes glass, metal and thermoplastics. Below we will look at plastics and how this material is the best in terms of cost and recyclability.
The best and low cost alternative to metal, which is expensive, and glass, is plastic. Durable, rust-free and very tough despite its density, are the characteristics of plastic that makes it superior to others. In particular, thermoplastic allows manufacturers to produce very complex shapes at a much lower cost than other materials. 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 if all plastic products in the world were handmade. These products can come out misshapen and structurally weak objects. With injection molding design precision is achieved, and structural soundness is maintained. 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 save money with this and you will have less problem with waste management.
Other parts and components can be made from waste plastic. Scrap plastic and virgin plastic are of the same quality. 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. Productivity is high with injection molding and it is faster to manufacture products.
Injection molded plastics usually 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.
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.
With injection molding there is a shorter finishing time because the process always takes care of most of the work. 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.