Liquid coating device
US5882408A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 4, 1997 |
| Grant date | Mar 16, 1999 |
| Priority date | — |
| Expiry date | Sep 4, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B12/02
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A coating system of a liquid to a sheet material. The system includes a tank 1, a feed pump 4, a feed control valve 8 including a liquid drawing or sucking back mechanism, and a slit die 9 for applying the liquid to the sheet, which are connected with each other by means of a first, second and a third feed conduits 3, 5 and 7. A first return conduit 11 with a return control valve 10 and a second return conduit 12 are provided between the feed pump 4 and the feed control valve 8 for returning the liquid to the tank 1. Electromagneticvalves 15 and 17 operated by a control apparatus 22 are provided for switching instantaneously the conduits between the feed control valve and the return control valve 10.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.