Patent ID: 9242415
Filing Date: 2016-01-26
CPC Classification: B29C

Claim Text:
1. A substantially transparent and reusable vacuum infusion heating bag for heating one or more curable material on a tool, dispersing a permeating substance through the one or more curable material and forming a composite part, comprising: a substantially transparent laminate containing a heating element, the heating element being sandwiched between a first layer and a second layer of flexible polymer material, a first side of the laminate is configured to face away from the curable material, and a second side of the laminate is configured to face the curable material wherein the heating element comprises a Positive Temperature Coefficient device comprising a Positive Temperature Coefficient material, wherein the Positive Temperature Coefficient material comprises an electrically conductive filler dispersed in the Positive Temperature Coefficient material at loadings of about 0.01 to about 80 wt %, based on the total weight of the Positive Temperature Coefficient material; wherein the flexible polymer material is substantially transparent and thermally conductive and comprises a silicone rubber composition and a thermally conductive filler.