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. The process uses mold cavities into which materials in molten state are poured and solidified to from useful things like ice trays, bottle caps, bins, and other things.
The different kinds of materials that can be sued for injection molding are 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. 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. There is a need to put additives so that the plastic will not be so brittle especially when exposed to very cold temperatures. If you want to form other shapes from a finished product, you can just simply reheat it.
If you have to make plastic products by hand, what could be the result? 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. With this you get to save money on plastic, and you don’t have much waste as to worry about waste management.
Other parts and components can be made from waste plastic. Scrap plastic and virgin plastic are of the same quality. 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. Productivity is high with injection molding and it is faster to manufacture products.
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. They remake products that are defaced.
Despite its bad reputation as being non-biodegradable, plastics are highly recyclable and plants often 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.
If metal and glass cannot be used in certain applications they use molded plastic products. Industries like automotive, oil, gas, and electronics use plastic on a regular basis.
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