Injection Compression Moulding

Injection Compression Moulding FAQ

What is the difference between injection molding and compression molding?

The difference is that injection molding moves the material through a screw and a hopper, whereas compression molding does not. Each of these two common molding processes offers unique benefits for manufacturing companies. Compression molding, for instance, is a low-cost molding process that’s ideal for large-volume manufacturing applications.

What is compcompression molding?

Compression molding is a high-volume, high-pressure method suitable for molding complex, high-strength fiberglass reinforcements. Advanced composite thermoplastics can also be compression molded with unidirectional tapes, woven fabrics, randomly oriented fiber mat or chopped strand.

What are the advantages and disadvantages of compression molding?

The advantage of compression molding is its ability to mold large, fairly intricate parts. Also, it is one of the lowest cost molding methods compared with other methods such as transfer molding and injection molding; moreover it wastes relatively little material, giving it an advantage when working with expensive compounds.

Is there a low viscosity injection molding grade of material?

The compression molding process doesn't have a long flow path which requires the low viscosity injection molding grade of material. There are limitations to the process, as there are with any process. You would want the experts to review your product design and make sure it is a robust design for compression molding.