Process for making necked nonwoven webs having improved cross-directional uniformity
US7740786B2 · kind B2 · utility
15Cited by
50References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2005 |
| Grant date | Jun 22, 2010 |
| Priority date | — |
| Expiry date | Jan 9, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2307/718
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Necked nonwoven webs having improved cross-directional uniformity are made by a process which includes the step (prior to neck stretching) of corrugating the nonwoven web to reduce its width from an initial width A to a reduced corrugated width B. The cross-directional uniformity is optimized as the corrugated width B approaches the ultimate width C of the necked nonwoven web.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.