Injection Molding Basics – What Is It & How Does It Work

plastic parts produced by injection molding machine
Plastic products manufactured by injection molding machine

IMM is no stranger to us, but few of us really takes the time to think about what injection molding is or what is called injection molding?

Well, there are a thousand ways to interpret the Bible. Personally, I prefer to regard it as a method of forming objects from granular or powdered plastics, most often of the thermoplastic type, in which the materials is fed from a hopper to a heated chamber in which it is softened, after which a ram or screw forces the material into a mold.

Then, how does injection molding work?

In fact, the name implies its process. In the moulding process, plastic granules are fed into a heated barrel by a forced ram from a hopper→as the granules are slowly moved forward by a screw-type plunger→the plastic is forced into a heated chamber, where it is melted→As the plunger advances→the melted plastic is forced through a nozzle that rests against the mould→allowing it to enter the mould cavity through a gate and runner system→The mould remains cold so the plastic solidifies almost as soon as the mould is filled.

injection molding machine parts - illustration working mechanism
injection molding machine parts

Injection molding is most commonly used by manufacturers to create plastic components, most often thermoplastic and thermosetting polymers. Thermoplastics are prevalent due to their characteristics which make them highly suitable for moulding, such as the ease with which they may be recycled, their versatility allowing them to be used in a wide variety of applications, and their ability to soften and flow upon heating.

As one of the oldest manufacturing processes, the ability of the injection moluding process to mass produce complex products is what makes it continue to be a popular choice with worldwide manufacturers. They can create multiple complex parts at once by melting thermoplastic and injecting it into a mold at high speed and pressure.

To recap, injection molding is a type of plastic moulding through which we can manufacture different parts like pipes, bottle caps, syringes, etc, for industries like White, automotive, packaging, and so on. HVR MAG provides customized magnetic platens for injection molding machines from 50ton-4000ton. Welcome to visit our website to learn more about a magnetic way to reduce your machine downtime.

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