Method and transparent patterning of a material web and device for carrying out said method
US7310858B2 · kind B2 · utility
2Cited by
11References
25Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 25, 2002 |
| Grant date | Dec 25, 2007 |
| Priority date | — |
| Expiry date | Nov 30, 2023 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD04H18/04
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a method for generating three-dimensional transparent patterns on a non-woven fabric or similar, whereby, for example, hot air is sucked through openings which form the pattern in the circumferential surface of a drum. The openings are straight or curved gaps instead of conventional holes and together with other openings form the desired pattern. The air or similar, flowing through the gaps, presses the fibres into the gaps and the vacuum on the inner side of the drum sucks said fibres onto the patterning.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.