Apparatus for coating substrates with inductively charged resinous powder particles
US5518546A · kind A · utility
25Cited by
11References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 5, 1994 |
| Grant date | May 21, 1996 |
| Priority date | — |
| Expiry date | Oct 5, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05D1/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An apparatus for improving the electrostatic charge developed on a resin powder composition for electrostatic coating of solid objects and the method of application thereof. The apparatus comprises a device for charging the powder by electrical induction/conduction such that the powder particles have a resistivity of from about 10.sup.9 to about 10.sup.13 ohm.meters at 20 percent relative humidity and spraying the charged powder onto an grounded solid object to which it adheres prior to the thermal fusing to produce a permanent finish.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.