5. Specific design features. Constraints

Designing a part to be produced using the water-assisted injection molding process requires certain precautions. This process should be considered as complementary to gas-assisted injection molding, and almost exclusively reserved for large-diameter tubular parts. Water-assisted injection should be considered for diameters of 22 mm and above, which can be considered critical for gas-assisted injection.

Today, most of the parts produced by water-assisted injection molding are tubular parts with a large water passage cross-section. Reinforcing large, flat parts with an extra thickness is still reserved for gas-assisted injection molding.

Any part resembling a handle, armrest, etc. is called a tubular part. All the methods described at