| 摘要 |
1,081,155. Sliding clasp fasteners. SCOVILL MANUFACTURING CO. March 10, 1966 [March 12, 1965], No. 10663/66. Heading E2S. In a sliding clasp fastener comprising a pair of tapes having interlocking fastener elements in the form of loops or coils of thermoplastic material, an end stop is formed by welding together a plurality of the loops or coils only at their interfaces where they are in abutting relationship. The welding is effected by an ultrasonic device. |
