Process for clamping, sealing, and aiding the filling of matched molds

摘要

A technique and process for clamping, sealing and aiding in the filling of fiberglass or other types of matched low pressure molds. An air-impervious bag is placed about the male and female molds and is sealed. A vacuum is then produced within the bag in such a manner as to fix the molds firmly together while sealing the mold parting line and whereupon a predetermined amount of molding material is injected within the mold cavity.