Login Form

  • Print
Details
Last Updated on Monday, 09 May 2011 15:34
Written by Super User
Water Injection Molding

Water Assisted Injection Molding - new methods of using water instead of gas to further reduce time cycles of thick section tubular products.

Water Assisted Injection Molding (WAIM) is also based on the PEP process.

The mold cavity is filled and partially packed with plastic gas. Gas or water injection creates the initial bubble, followed by water injection to pack the cavity and then sequencing the opening of a shut-off valve to enable the expulsion of molten plastic to the secondary cavity. The secondary cavity is then pierced to allow water to flow through the gas channel(s) to cool the plastic. Water is then drained from the cavity by gas pressure or by air injection to dry the part before opening the mold and ejecting the part.

Additional information