Advantages of Plastic Injection Molding
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. If we consider cost and recyclability, plastics rule over the other materials, and this will be discussed below.
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. 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. There is a need to put additives so that the plastic will not be so brittle especially when exposed to very cold temperatures. Reheating the finished product will allow you to change the form of its shape.
Imagine if all plastic products in the world were handmade. We will have products with bad shapes and are structurally weak. With injection molding design precision is achieved, and structural soundness is maintained. The process of injection molding has other benefits like the ones given below.
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. With this you get to save money on plastic, and you don’t have much waste as to worry about 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.
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.
If we speak of defects, plastic made with injection molding have very little or no defects. 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. They remake products that are defaced.
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. It reduces further the cost of labor and time.
Molded plastic products are often the only solution where metal and glass cannot be used. Plastic is used by industries like automotive, oil, gas, and electronics on a regular basis.