Patent ID: 6519826
Filing Date: 2003-02-18
Classification: A44B,Y10T

Abstract:
A water-tight and gas-tight zip fastener having a first and a second row of teeth on first and second fastener strips, comprising:a thermoplastic elastomer coating on at least a first side of each said first and said second fastener strips; said thermoplastic elastomer coatings being at least a contoured coating on each said first and second rows of teeth; each said contoured coatings having respective sealing shapes resiliently pressing together upon a closing of said zip fastener and preventing at least one of a water and a gas penetration of said zip fastener along said rows of teeth; an end stop sealing together said first and second fastener strips at a top end; a slide in said zip fastener; said slide including at least a slide core and legs opposite said slide core; a port on at least a bottom end of said zip fastener opposite said end stop; said port sealingly joining said contoured coatings at a bridge portion from said first to said second fastener strips; a port hole in said port having a shape effective to sealingly receive said slide core during said closing; a transitional section in said port extending from said bridge portion and joining a continuous bead surrounding said port hole; said transitional section having at least a wedge-shape; said bridge being slightly over-dimensioned and said transitional section widening wedge-like, whereby said legs compress at least said transitional section and said bridge during said closing and prevent said water and said gas penetration of port in said zip fastener; at least a first sealing lip in said port surrounding said port hole; and said first sealing lip providing sealing contact to said slide core upon said closing, whereby said first sealing lip contacts said slide core and prevents said water and said gas penetration of said port.