Injection Molding
Plastic Injection Molding Manufacturing Process step by step?
Release time:2019-06-11 16:16:37| Views:

Plastic Injection Molding Manufacturing Process Step by Step

Plastic Injection Molding is the most commonly used manufacturing process to produce the plastic parts for both consumer products and engineering applications. It is a method to obtain molded products by injecting plastic materials molten by heat into a mold, and then cooling and solidifying them. It is suitable for the mass production of complicated shapes and precision tolerance.

The various stages of the injection molding process are carefully considered when analyzing part design, mold manufacturing and efficient production of molded plastic products. Here we give a basic overview of the seven steps that occur during the injection molding process.

Step 1 Preparation

Check the injection molds such as the ejection system, cooling system and tooling structure before upload it on the injection molding machine. Prepare the plastic raw material. We may need the plastics drying machines to dry the material to remove the moisture. The drying time and temperature is different for different material.

Step 2 Upload the Injection Molds

Upload the custom injection mold in the injection molding machine, connect the cooling system. Set up the injection mold temperature for the cavity and core side. Configure ejection system of the plastic tooling, mold opening distance in the injection machine. Check the plastic tooling structure and ejection system again.

Step 3 Check Robot and material feeding system

If we have to use Robot, then write the programme in the injection molding machines and connect the grippers to do the injection molding process automatically. Connect the plastic resin from dry system to feeder hopper of injection molding machine. Remove the old resin in the nozzle.

Step 4 Melting the material

The plastic injection molding process stages starts with the feeding of a polymer resin through hopper to barrel which is then heated with the sufficient temperature to make it flow.

Step 5 Injection Stage

Then the molten plastic which was melted will be injected under high pressure into the mold the process is commonly known as Injection.

Stage 6 Cooling Stage

After injection pressure will be applied to both platens of the injection molding machine(moving and fixed platens) in order to hold the mold tool together afterwards the product is set to cool which helps it in the solidification process.

Stage 7 Mold Open and Ejection

After the product gets its shape the two platens will move away from each other in order to separate the mold tool which is known as mold opening and finally the molded product is ejected or removed from the mold.

 The plastic mold is closed and the injection moulding process will repeat itself.

Injection molding allows for the creation of complicated, high-quality three-dimensional parts, created with consistency; perfect for high volume production parts. Most injection moulding processes use thermoplastics because they can be melted and cooled down many times, limiting wasted materials.The most common thermoplastics used during the injection moulding process include ABS, PP, PC, PE, PA and PS. Injection moulding is valuable due to its low labour costs, minimal wastage and high production rates.

Stebro Mold is a full-service ISO9001 certified injection molding company. We utilize seven state-of-the-art plastic injection molding machines and a complete mold manufacturing shop to take your product from design to completion. We are proud of the high quality plastic molding manufacturing services that we offer: including Part Design, CNC machining plastic prototype, mold manufacturing , custom plastic injection molding and part assembly.

Contact us today for more information about how we can assist you with custom plastic injection molding, insert molding, over molding and plastic part assembly. We truly offer a complete package of experience and creativity for your plastic injection molding needs.

 previous:How much does plastic injection moulding cost?
 next:Injection Molding Defects-Weld Lines, Weld Marks, Meld Lines or Knit Lines