METHOD OF MAKING A NATURAL RUBBER VACUUM BAG BY SPRAY PROCESSES NATURAL RUBBER VACUUM BAG MADE USING SPRAY PROCESS, AND METHOD FOR USINGNATURAL RUBBER BAG MADE USING SPRAY PROCESS

摘要

Disclosed is a method for making a membrane for use as a vacuum bag, a na tural rubber vacuum bag made using such methods, and methods for using such a natural rubber bag to form a composite article. One method can include pro viding a substantially non-porous working surface having a desired shape for forming a vacuum bag, spraying at least one layer of a natural rubber liqui d over at least a portion of working surface, and solidifying the natural ru bber liquid to form a membrane having a shape substantially corresponding to that of the working surface. The membrane formed being elastically deformab le and substantially impermeable for functioning as a vacuum bag in Vacuum A ssisted Resin Transfer Molding, debulking, compaction, or similar processes.