Slide fastener and method of making same
US4290176A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 29, 1980 |
| Grant date | Sep 22, 1981 |
| Priority date | — |
| Expiry date | Feb 29, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49782
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A method of and an apparatus for the formation of slide-fastener stringers wherein coupling members of a thermoplastic synthetic resin are bent into a U configuration to straddle the edges of respective fabric support tapes also composed of thermoplastic synthetic-resin filaments or yarns at least in the region in which the tape is straddled by the shanks of each coupling member. The shanks of the coupling members are thermally welded together through the tape and thereby also bonded to the filaments or yarn between the shanks; thereafter the tapes bearing the coupling members are subjected to thermofixing i.e. heating to shrink the tapes thereby condensing the meshes formed by the yarn or filaments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.