Nonwoven with non-symmetrical bonding configuration
US6537644B1 · kind B1 · utility
44Cited by
10References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 13, 1999 |
| Grant date | Mar 25, 2003 |
| Priority date | — |
| Expiry date | Dec 13, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/681
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A nonwoven has low tensile and high elongation in the first direction (typically the CD) and high tensile and low elongation in the second direction (typically the MD). The nonwoven has a plurality of bonding points defining a total bonding area along the second direction greater than along the first direction. Accordingly, the nonwoven has unbonded fiber portions and bonded fiber portions, with a bonded portion/unbonded portion ratio greater along the second direction than along the first direction. The bonding points are preferably either circular or oval in plan.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.