Process for the production of a non-woven cloth constituted of continuous interconnected filaments and cloth thus obtained
US5355565A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 28, 1993 |
| Grant date | Oct 18, 1994 |
| Priority date | — |
| Expiry date | Apr 28, 2013 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD04H3/02
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A process for the production of a non-woven sheet of continuous interconnected filaments, comprising producing biconstituted filaments of a size less than 4 dtex comprising two interconnected elemental filament components each of a different polymer, imparting to the biconstituted filaments a curl having a curling frequency of 3 to 30 curls per centimeter to impart to the filaments a bunching upon curling of 50 to 400%, and forming a non-woven sheet from the curled biconstituted filaments, the sheet having a weight of 10 to 400 g/m.sup.2. The non-woven sheet is then subjected to water jets supplied under a pressure of 50 to 300.times.10.sup.5 Pa to interlace and entangle the curled filaments constituting the sheet and to separate the interconnected filaments from each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.