Weatherstripping including method and apparatus for the manufacturing thereof
US4699818A · kind A · utility
Inventors
Key dates
| Filing date | Aug 14, 1984 |
| Grant date | Oct 13, 1987 |
| Priority date | — |
| Expiry date | Aug 14, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/23993
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of manufacturing weatherstripping comprises forming a row of pile fiber on a substrate, compressing the row widthwise between a pair of dies, heating the row while so compressed, and cooling the heated row. In this way the sides of the row can be heat set for appearance, or formed into a continuous film, or the whole row converted into a barrier fin in the form of a film, depending upon the degree of compression and the temperature. Preferably the row is formed by tufting and the dies disposed immediately downstream of the tufting station. Pile fiber of conjugate polyethylene and polypropylene is advantageous in forming such films which are integrally attached to the substrate by pile fiber roots extending from the base of the film into the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.