Process for forming fibrous structures with predetermined Z-fiber distributions
US6029327A · kind A · utility
11Cited by
24References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 4, 1995 |
| Grant date | Feb 29, 2000 |
| Priority date | — |
| Expiry date | Oct 4, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/667
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to the field of forming fibrous structures by needling processes. A process is provided for achieving a desired Z-fiber distribution in a fibrous structure by controlling transport depth during formation of the fibrous structure in a series of needling passes. Each needling pass generates a portion of Z-fiber bundles that penetrate adjacent fibrous layers, the Z-fiber bundles penetrating only those adjacent fibrous layers that need more Z-fiber bundles to attain a predetermined number of Z-fiber bundles within each fibrous layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.