Method for making a powder coating
US5323970A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 1992 |
| Grant date | Jun 28, 1994 |
| Priority date | — |
| Expiry date | Jan 28, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB02C2013/145
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
There is obtained with greater efficiency a powder coating having an average particle diameter smaller and a particle size distribution range narrower than those currently made by conventional methods. The method to obtain the powder coating comprising; introducing a solid mixture of coating materials between a rotor and a stator; the rotor being supported in such a manner as to be rotating round the shaft center and, on its periphery, being arranged with multiple convex lines extending in a direction of the shaft and being lined up along the periphery; the stator having a cylindric rotor-opposite face arranged with a certain interspace between this face and the rotor periphery and having, on the rotor-opposite face, multiple convex lines extending in the direction of the shaft and being lined up along the circumference, wherein the rotor-opposite face is arranged in such a manner as to be capable of opening in order to expose the rotor periphery; and then pulverizing finer said mixture by said rotating rotor and said stator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.