Method and apparatus for applying a pattern to a continuously advancing web of material
US4463467A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 1982 |
| Grant date | Aug 7, 1984 |
| Priority date | — |
| Expiry date | Jun 18, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S68/90
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method and apparatus for applying a pattern to a continuously advancing web with a foam containing treatment medium. The pattern may be generated in the foam prior to or after the foam is transferred to the web. In one embodiment, the pattern is generated using two foam feeding devices arranged to form a patterned layer on a revolving element positioned over the web. The forward velocity of the web and the speed of rotation of the revolving element are controlled to obtain the desired pattern effect on the web.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.