Method of controlling thickness of coated film on web-like member by roll coater
US5310573A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 1992 |
| Grant date | May 10, 1994 |
| Priority date | — |
| Expiry date | Oct 20, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05C11/02
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A paint in a paint pan is picked up through a gap h.sub.PA formed between a pickup roll and an applicator roll, part of the paint is attached to the applicator roll and delivered to a sheet as a supply flow rate q.sub.A. The film thickness coated on the sheet is controlled in accordance with a model equation: M={(q.sub.A -q.sub.L).multidot..gamma..multidot.C}/LS which has evaluated a difference between the supply flow rate q.sub.A and a leak flow rate q.sub.L not transferred onto the sheet, remaining on the applicator roll and escaping through a gap h.sub.AS (.gamma. is the specific gravity of the paint, C the concentration of a solid content of the paint and LS a moving speed of the sheet).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.