Weatherstripping produced by tufting with flattened knuckles
US4624878A · kind A · utility
Inventors
Key dates
| Filing date | Aug 14, 1984 |
| Grant date | Nov 25, 1986 |
| Priority date | — |
| Expiry date | Aug 14, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/23993
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method of manufacturing weatherstripping includes tufting synthetic yarn into a primary backing fabric to form tufts on one side thereof and tuft "knuckles" on the other side. Then, the tuft knuckles are contacted with a heated surface of controlled temperature to deform and flatten them, the combined thickness of the primary backing and the tuft knuckles thus being reduced and the tufts being more securely attached to the primary backing. Preferably, there is relative motion between the tuft knuckles and the heated surface to effect a smearing of the tuft knuckles onto the primary backing. The flattened tuft knuckles may form a thin continuous strip adhering to the primary backing and locking the tufts thereto.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.