Method and apparatus for curtain coating
US6982003B2 · kind B2 · utility
5Cited by
5References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2002 |
| Grant date | Jan 3, 2006 |
| Priority date | — |
| Expiry date | Feb 24, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S118/04
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An apparatus for curtain coating, particularly for high-speed curtain coating of a continuous paper web substrate (12) is provided with a hopper means (14) providing one or more liquid coating materials in the form of a free-falling curtain (16) impinging the substrate (12) at a dynamic wetting line. Edge guide elements (22, 24) are arranged on both sides supplying a wetting or auxiliary liquid. Each guide element (22, 24) has at least one contact area of its surface directed towards said curtain, which contact area has a multiplicity of grooves (32) and ribs (34) extending along the length of said edge guide elements (22, 24).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.