Apparatus for producing textiles, nonwoven substances, spunbond fabrics, paper materials, and/or perforated films
US8082638B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 7, 2007 |
| Grant date | Dec 27, 2011 |
| Priority date | — |
| Expiry date | Oct 6, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB26F1/24
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The invention relates to an apparatus for producing textiles, nonwoven substances, spun-bonded fabrics or paper materials (5) with the aid of at least one screen drum (1) having openings (4) for transporting away the fluid (6) which is output from a water bar (7) and having numerous outwardly directed elevations (3) which are situated on the outside of the screen drum (1) for the perforation of the nonwoven (5). The invention is based on the object of providing an apparatus which makes it possible, during the water conversion and at the same time as the perforation, also to make patterns in the nonwoven without influencing the strengthening substantially in the process. The object has been achieved in that one or a plurality of regions (8) on the outer side of the screen drum (1) does/do not have any elevations (3) but only openings (4).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.