Advantages of Plastic Injection Molding
A process called injection molding is used for making most of the products we use today, particularly components of large products. 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.
There are many different kinds of materials which can be used for injection molding and this includes glass, metal and thermoplastics. In the discussion below, we will look at plastics which is the best materials among others 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. Plastic becomes brittle in very cold temperatures and this is why they put additives to prevent this. And when a product is finished, you can reheat it to form other shapes.
If you have to make plastic products by hand, what could be the result? 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.
Since the molding cavities can only contain the amount of plastic that is needed, it minimizes or eliminates scraps. 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. You can compare the quality of this waste plastic to virgin plastic. Waste is minimized or almost eliminated.
Injection molding labor cost is a lot lower than molding 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.
Despite its bad reputation as being non-biodegradable, plastics are highly recyclable and plants often use discarded and unused plastic parts.
The injection molding process takes care of most of the work which makes the finishing time shorter. It reduces further the cost of labor and time.
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.