Method for supplying powder into a coating tank and its apparatus
US4192728A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Sep 12, 1978 |
| Grant date | Mar 11, 1980 |
| Priority date | — |
| Expiry date | Sep 12, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D13/24
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method for supplying powder into a coating tank for electrophoretic powder coating comprises a first step for taking out a specified amount of plating bath of which the powder contained therein is reduced as a result of coating work, a second step in which the powder of much the same amount as the reduced amount of the powder is supplied to the plating bath taken out while the plating bath is being agitated to disperse the powder in the plating bath (the first dispersion) to form supplementary plating bath, a third step including the step for second dispersion of the powder in which the powder contained in the supplementary plating bath is further uniformly dispersed and a step for aging the supplementary plating bath with the dispersed powder, and a fourth step for supplying to the coating tank sufficiently aged supplementary plating bath which is obtained from the third step and has a high density of powder which is substantially uniformly dispersed in the supplementary plating bath, and an apparatus is one for executing that method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.