Patent ID: 8166619
Filing Date: 2012-05-01
Classification: A44B,Y10T

Abstract:
1. A fluid-tight slide fastener comprising: a pair of tapes, each tape having a layered structure comprising an inner reinforcing layer enveloped in a fluid barrier layer made of a thermoplastic elastomer material (TPE), each tape having a row of aligned teeth made of a thermoplastic material on at least a portion of one of the long sides thereof, the teeth being applied to coated tapes formed by said inner layer and fluid barrier layer, the rows of aligned teeth of said pair of tapes facing each other and being associated to top and bottom stops; and a slider slidable between said top and bottom stops for engaging in a fluid-tight way or disengaging said aligned teeth respectively, wherein said inner reinforcing layer is made of a material selected from the group consisting of polyester (PE), polyethylene terephthalate (PET), and their blends or copolymers, the material comprising spun yarn including cut fibers that is formed into a textile material having an irregular surface; wherein said fluid barrier layer is made of a thermoplastic elastomer material (TPE) selected from the group consisting of polyurethane (TPE-U) and thermoplastic elastomer polyester (TPE-E), and wherein said teeth are made of a thermoplastic material selected from the group consisting of polybutylene terephthalate (PBT), acrylonitrile butadiene styrene (ABS), and their blends or copolymers, wherein the fluid barrier layer is bonded to the inner reinforcing layer by melting, such that the cut fibers forming the irregular surface of the inner reinforcing layer are embedded in the TPE material of the fluid barrier layer.