Water-proof zipper and its making method


Application Number: 00108268
Application Date: 2000.04.26
Publication Number: 1272346
Publication Date: 2000.11.08
Priority Information: 1999/4/30 JP 123557/99
International: A44B19/32
Applicant(s) Name: YKK Co., Ltd.
Address:
Inventor(s) Name: Shibaike Masatoshi;Kusayama Masayo;Shiju Monohide
Patent Agency Code: 31100
Patent Agent: hu xiaoping
Abstract The present invention intends to provide a waterproof slide fastener in which a synthetic resin film is fused to a fastener tape in order to prevent a perforation phenomenon that the synthetic resin film does not exist locally. A laminated synthetic resin film (4) composed of low melting point resin layer (12) having melting point of, for example, 100 DEG C – 140 DEG C and high melting point resin layer (13) having melting point of, for example, 150 DEG C – 230 DEG C is fused to a surface or both surfaces of a pair of the fastener tapes (3) with the low melting point resin layer (12) being in contact with and opposing the fastener tape (3) by heating with pressure. Fastener elements (5) are mounted onto a side edge (11) of the fastener tape (3) and the laminated synthetic resin film (4) is formed so as to protrude outward from the side edge (11) of the fastener tape (3) and a center point of coupling of the fastener elements (5). Because the high melting point resin layer (13) disposed on the surface of the fastener tape (3) is not melted, no perforation phenomenon occurs. Further, because the laminated synthetic resin film (4) protrudes from the side edge (11), waterproof function is secured.