Mold having vent passageways to obviate trimming of flash

摘要: A mold for producing foamed articles includes an upper and a lower which define cavity. vent is provided in communication with the cavity has passageway entrance exit. Structure also sealingly engaging to cause, cooperation predetermined size shape of passageway, liquid foam polymeric composition expanding inside enter but not exit from cause at least partial curing within passageway. Preferably, may be ribbon-shaped so that ribbon adheres article folded flat against thus avoiding labor step trimming flash product. Additionally, or alternatively, include obstruction disposed therein provide one more openings between outer surface inner The these expelled by driving axially Again, hand avoided.