How to Operate the Injection Moulding Machine

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In the realm of industrial production, injection molding has become one of the most popular production methods.

The procedure, which involves injecting a substance (usually plastic) into a mold, is employed in a variety of applications ranging from engineering to jewelry production.

In principle, injection molding is a straightforward technique that may produce simple or sophisticated pieces.

Even though each machine is unique, the overall procedure is the same. Inadequacies can, however, occur as a consequence of operator mistakes.

Simple steps in operating the injection molding machine

  •  Place the mold in the injection molder. Make sure the mold’s channel where the molten plastic flows are lined up with the injection nozzle on the machine.
  •  Melt the material by placing it in the injection machine and turning on the heaters.
  •  The heaters will melt the plastic material while simultaneously heating the mold, allowing the injection material to flow freely through it without hardening.
  •  To avoid being splashed with molten plastic material, close any safety guards on the machine.
  •  Adjust the injection molding machine's clamping pressure. The clamp pressure ought to have been calculated throughout the mold’s design phase.
  •  Configure the injection molding machine's pressure drop. Similarly, this ought to have been decided upon when the part and the mold were being designed.
  •  Afterward, clamp the mold with the injection molding machine's hydraulic systems. This will prevent material from leaking out from the mold.
  •  The plastic material will be fired into the mold when you press the injection button.
  •  After the mold has cooled sufficiently to handle, remove it from the injection machine and extract the component. Leave the heaters turned on to avoid having to wait.
  •  Replicate the procedure by inserting the mold once more into the injection molding machine.

Servo 140 Ton Injection Molding Machine NPC140

What Kind of Plastic Is Utilized In Injection Moulding?

The most widely accepted plastic material used by plastic component producers for injection molding is thermoplastics.

Thermoplastic materials are polymers that melt at extreme temps and harden at reduced temperatures. You can heat and cool thermoplastics several times before it becomes unusable, unlike thermoset plastic resin, which ignites when reheated.

The following are the most prevalent thermoplastics:


Polycarbonates are plastic materials that have high resistance to impact and shocks due to their ability to withstand plastic deformation without breaking.

This material is used in eyewear lenses, screens for mobile phones, and bulletproof glass

 Acrylonitrile Butadiene Styrene (ABS).

This material is used for plastic injection because of its strength and lightness.


This plastic material has exceptional electrical properties and a durable structural composition which is why it is used to manufacture sporting equipment.


This material is used in injection molding processes because it has good elastic properties, and it does not react readily with chemicals. Polypropylene is used in food packing industries.


This a multipurpose plastic to use in injector molding because it is ductile, recyclable, resistant to impact, and strong which makes it the perfect material for making plastic containers.

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