Coating apparatus having a well-definied gap for controlling thickness of a layer of rheological material applied to a flexible film
US10898921B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 25, 2019 |
| Grant date | Jan 26, 2021 |
| Priority date | — |
| Expiry date | Nov 25, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05D2252/02
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Systems and methods for dispensing liquid materials as may be used in applications for coating flexible films and the like. Such a film may be coated by dispensing a rheological material onto its surface while drawing the film through a gap between a pair of rollers. The gap defines the thickness of a layer of the material applied to the film and is maintained at a desired width by microwires positioned through the gap. Another film across the gap from that to which the rheological material is applied aids in the coating of the layer and a contact area of the second film may be adjusted relative to the gap, e.g., when changing materials or when the coating film becomes abraded or deformed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.