Apparatus and method for producing two-sided patterned webs in registration
US7165959B2 · kind B2 · utility
43Cited by
30References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2003 |
| Grant date | Jan 23, 2007 |
| Priority date | — |
| Expiry date | Nov 22, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41P2213/90
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An apparatus for casting a patterned surface on both sides of a web. The apparatus includes a first patterned roll; a second pattered roll; and a means for rotating the first and second patterned rolls such that their patterns are transferred to opposite sides of the web while it is in continuous motion. During this process, their patterns are maintained in continuous registration to within at least 100 microns, and preferably at least 20 microns.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.