GRAINED PARTING LINES IN MOLD FOR FOAM ARTICLES

摘要

A multi-section mold and method for molding a foam article. Micro-groove vents are formed in the parting line to expel gases from the mold cavity. Flashing that solidifies in the micro-groove vents takes the form of fringe-like elements. The roof of the mold cavity can be provided with similar micro-groove graining patterns to disrupt the accumulation of gas bubbles and minimize defects in the final foam surface.