PRESSURIZED TOOLING FOR INJECTION MOLDING AND METHOD OF USING

摘要

The present invention relates to an apparatus (10) and process for injection molding polymer articles that reduces deposition of additives on the apparatus. Specifically, pressurizing of the mold cavity (16) with a pressurized gas reduces the deposition of low molecular weight additives on the apparatus. Embodiments of the invention also include an apparatus for injection molding polymer articles comprising at least one pressurized gas inlet (26) for introducing a pressurized gas into the mold cavity.