Slit neck spunbond process and material
US6785937B2 · kind B2 · utility
4Cited by
45References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2002 |
| Grant date | Sep 7, 2004 |
| Priority date | — |
| Expiry date | Sep 5, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2555/02
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A process for making a plurality of necked nonwoven strips having similar or identical cross-directional profiles includes the steps of slitting a neckable nonwoven web into a plurality of neckable nonwoven strips, passing the neckable nonwoven web between a first pair of nip rollers having a first surface velocity and a second pair of nip rollers having a second surface velocity greater than the first surface velocity, and necking the nonwoven web between the first pair of nip rollers and the second pair of nip rollers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.