Method and apparatus for heating nonwoven webs
US6944968B2 · kind B2 · utility
10Cited by
13References
6Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 10, 2003 |
| Grant date | Sep 20, 2005 |
| Priority date | — |
| Expiry date | Sep 10, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/641
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for drying/heat-treating nonwoven webs in which the web is partially dried under tension in a first drying zone and further heat treated under low tension or in a substantially tensionless state a second drying zone. The process significantly reduces the occurrence of stretch-type defects in the nonwoven webs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.