Velvet-type fastener web
US4338800A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 8, 1980 |
| Grant date | Jul 13, 1982 |
| Priority date | — |
| Expiry date | May 8, 2000 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD10B2501/0632
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A velvet-type or snap-together fastener web comprises a warp-knitted ground structure and series of interlooped loops disposed in at least every other wale, each loop including a pair of mushroomed stems projecting from the wale at each course. To produce such a fastener web, a double-faced fabric is knitted on a Raschel warp knitting machine, and is separated into a plurality of strips by dissolving transversely spaced water-soluble threads in the fabric. Each strip is divided into front and back fabric webs by severing thermoplastic thread portions therebetween, leaving a multiplicity of raised stems on each fabric web. The raised fabric stems are then heated to mushroom their ends.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.