May resin puncture the bag during cure cicle?
May resin puncture the bag during cure cicle?
(OP)
From time to time vacuum leak occure during autoclave cure cicle. Sometimes because bag bridging, or seal compound sliding or vacuum port bridging the bag crash, and sometimes unknown reasons. When inexpilcable bag puncture arrive we chalk it up against resin. I heard that during gelation stage resin may form chips which probably cut through the bag. It is possible that a gummy sticky viscous substance to penetrate a laminated polymer foil plast material?





RE: May resin puncture the bag during cure cicle?
Probably, the main cause of blown bags is compaction of the part and breather materials during cure which requires the bag to move. If you don't anticipate this movement and place pleats where required to prevent the film from stretching then the film can tear. This is why experience is so valuble vacuum-bagging. Using high stretch film helps to make the process robust, but can also encourage poor bagging technique.