Continuous coating method for coating material with insufficient fluidity
US5677008A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1995 |
| Grant date | Oct 14, 1997 |
| Priority date | — |
| Expiry date | Dec 22, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05D1/28
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
In a continuous coating method, a coating material with insufficient fluidity can be uniformly coated on a substrate. A pick-up roller is disposed between a coating roller and a metering roller and a doctor bar is located above the pick-up roller. The coating roller is located near the substrate. The pick-up roller is rotated in a direction to pick-up the coating material through a gap between the pick-up roller and the metering roller. The metering roller is rotated in the same direction as the pick-up roller at a nip of these rollers, and the coating roller is rotated in a reverse direction with respect to the pick-up roller at a nip of these rollers. The substrate travels in a reverse direction with respect to the coating roller at a nip thereof. In the method, the pick-up roller picks up the coating material through the gap between the pick-up roller and the metering roller, and a meniscus of the coating material is formed between the pick-up roller and the metering roller while the pick-up roller and the metering roller are rotating. Thus, a uniform coating film is formed on the pick-up roller, which is transferred to the substrate through the coating roller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.