Fastener loop material, its manufacture, and products incorporating the material
US6342285B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 3, 1997 |
| Grant date | Jan 29, 2002 |
| Priority date | — |
| Expiry date | Sep 3, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/241
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Lightweight, non-woven loop products for hook-and-loop fastening are disclosed, as are methods for making them and end products employing them. The products are non-woven webs of entangled fibers of substantial tenacity, the fibers forming both a sheet-form, bonded web body and hook-engageable, free-standing loops extending from the web body. The product is, in important cases, stretched before bonding to produce spaced-apart loop clusters extending from a very thin web of taut fibers. In important cases a binder is added to stabilize the product in its stretched condition. An example of the loop product is produced by needle-punching a batt of staple fibers in multiple needle-punching operations, applying a foamed acrylic binder, and then stretching the needled batt and curing the binder with the batt stretched. Other forming techniques are disclosed and several novel articles employing such loop products are described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.