Longitudinally stretched nonwoven fabric and method for producing the same
US6132661A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Nov 17, 1997 |
| Grant date | Oct 17, 2000 |
| Priority date | — |
| Expiry date | Nov 17, 2017 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD04H3/04
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A longitudinally stretched nonwoven fabric and a method for producing the same, which nonwoven fabric is a web mainly composed of long fiber filaments of 3 .mu.m to 15 .mu.m in diameter and made by short distance stretching in one direction at a stretching ratio of at least 5, and which production method is characterized in the steps of: maintaining the spun filaments in a draftable state; cooling the filaments with a cooling fluid, then guiding the filaments onto a conveyer with inclining the flow of filaments toward the transferring direction, and sucking by a reduced pressure from the back side of said conveyer, and further subjecting the web of filaments to short distance stretching in the longitudinal direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.