High-speed spun-bond production of non-woven fabrics
US7578317B2 · kind B2 · utility
8Cited by
16References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 25, 2002 |
| Grant date | Aug 25, 2009 |
| Priority date | — |
| Expiry date | May 10, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/3195
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In combination with a high-speed spun-bond apparatus, rather than using a circulating sieve belt for collecting the stretched filaments and forming the web, a fabric having a 4-shed double layer with support shute weave design is used. This fabric is commonly referred to as a 4B weave and 4B weave with stuffer in center. In general, the fabric has a permeability ranging from 400 to 800 cfm with a woven or pin seam where the seam permeability and caliper varies only slightly with respect to the rest of the fabric.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.