Patent ID: 9446572
Filing Date: 2016-09-20
CPC Classification: B29C,B29D,B32B,Y10T

Claim Text:
1. A composite tool having vacuum integrity, comprising: a composite laminate including a first set of cured composite plies including a first composite ply forming a facesheet having a tool surface adapted to have a composite part placed thereon, a second set of cured composite plies, a barrier layer of flexible material impermeable to air sandwiched between the first set of cured composite plies and the second set of cured composite plies, such that a first face of the barrier layer contacts a last composite ply of the first set of cured composite plies and a second face of the barrier layer contacts a first composite ply of the second set of cured composite plies, in which the first face is opposite the second face, and an edge breather groove in the facesheet extending down to the barrier layer and surrounding the tool surface.