Method of slot die coating over deformable back-up roll
US11712713B2 · kind B2 · utility
0Cited by
12References
11Claims
0Family size
Inventors
Key dates
| Filing date | Dec 3, 2019 |
| Grant date | Aug 1, 2023 |
| Priority date | — |
| Expiry date | Dec 3, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/35
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Methods and apparatuses for applying coatings (9) on a moving web (3) are provided. A slot die (20) and a back-up roll (11) engage with each other. The back-up roll has a deformable inner layer (12) with a surface thereof covered by a deformable outer layer (14). The slot die and the flexible web at a contacting area are impressed into the back-up roll with an engagement depth D, which enables formation of a coating having a substantially uniform thickness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.