Method and equipment for rapid manufacture of loop material
US5904793A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 14, 1996 |
| Grant date | May 18, 1999 |
| Priority date | — |
| Expiry date | Aug 14, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1008
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method for forming a sheet of loop material in which a sheet of fibers is passed between a first cylindrical forming member having sockets and a second cylindrical forming member having mating posts to generally conform the sheet of fibers to the peripheral surface of the first forming member and retain it there for a distance after which molten thermoplastic material is bonded to it to form a backing layer. Arcuate portions of the sheet of fibers that were in the sockets then projecting from the backing. The formed sheet of fibers is retained along the peripheral surface of the first forming member for said distance by drawing air through those air passageways in the bottoms of the sockets. The first forming member can be heated, and a source of heated air can be supplied to restrict cooling of the first forming member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.