Making soft fabric touch fasteners
US12421638B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2020 |
| Grant date | Sep 23, 2025 |
| Priority date | — |
| Expiry date | Sep 18, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/729
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Methods of making a male touch fastener product, by shearing distal portions of loops extending from a side of a flexible fabric, leaving fibers extending from the side of the flexible fabric in place of the sheared loops, the fibers extending to respective free distal ends, while leaving other loops extending from the side of the fabric intact, and then heating the distal ends with energy supplied by a linear energy source, such that resin of the distal ends flows to form enlarged heads on the extending fibers, while leaving at least some of the other loops intact. A male touch fastener product has fibers that form both loops and fiber segments extending from the base to respective distal fiber ends spaced from the base. Each distal fiber end forms an enlarged head of fiber resin for snagging other fibers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.