Process for producing an elastic composite film having a textile surface
US7138024B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 26, 2003 |
| Grant date | Nov 21, 2006 |
| Priority date | — |
| Expiry date | Aug 3, 2023 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD04H13/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A process for producing an elastic composite film having a textile surface including at least one unwinding fibrous web being irreversibly extended at right angles to its direction of transport. The increase in the width of the fibrous web due to transverse extension is formed into foldlets by pulling tension acting in the direction of transport of the fibrous web. The fibrous web, which is under pulling tension and modified by transverse extension, is applied atop a transversely elastic film web of a thermoplastic elastomer and is adhered or welded thereto at contact sites which are spaced apart at right angles to the direction of transport of the webs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.