Patent ID: 7014809

Claim:
A process for making a reusable soft flexible bag for use in infusion or vacuum bag processes to be used in the manufacturing of plastic parts for use in the marine fiberglass industry, in a non-autoclave environment and where static pressure is not required, the process comprising: making a reusable flexible polymer bag by spraying or swirl spraying one or more coats of a polymer material made from one or plural component polymer on a surface of an opposing mold serving as a pattern from which the formed bag is configured, wherein successive coats of the sprayable silicone material are applied once a previously applied coat becomes sufficiently tack-free so as to not cause tearing of the previously applied coat during the spraying of the successive coat, inserting of resin ports and vacuum ports where desired; and curing said sprayed silicone material under ambient conditions when a desired number of the one or more coats of the silicone material are applied; wherein the cured formed soft reusable flexible bag is configured so as to be used in conjunction with a more rigid mold or other manufacturing aid, in between which a resinous material is directed using vacuum means to draw the resinous material in between the bag and the more rigid mold using the inserted resin ports and vacuum ports, to form the desired part, and wherein the formed bag is reusable for making the desired part.