Patent ID: 7891381

Claim:
A glass-reinforced inversion liner system configured to be installed into a tubular member using inversion, the liner system, prior to the installation, comprising: a) polyester felt; b) a fiberglass layer adjacent an inner surface of the polyester felt; c) a three-dimensional material adjacent an inner surface of the fiberglass layer, the three-dimensional material having a plurality of glass fibers; d) at least one channel extending through the polyester felt into the fiberglass layer; e) resin applied to the polyester felt, wherein a portion of the resin passes through the at least one channel and is delivered to the fiberglass layer; f) a cover adjacent an exterior surface of the felt; g) fiberglass fragments that are chopped and orientated perpendicular to the felt and interconnecting the three-dimensional material, the fiberglass layer, and the felt; and h) an agent for hardening the material in place; wherein, the resin maintains structural integrity when continuously exposed to water and is substantially free of volatile organic compounds; the material is a weave of polyester and ECR fiberglass; the cover is a covering comprised of at least one of nylon blend and PET; the resin is applied with a resin slug and a pinch roller; and the material has a diamond-shaped weave and protruding barbs.