Process for applying liquid coatings to solid particulate substrates
US5962082A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 1997 |
| Grant date | Oct 5, 1999 |
| Priority date | — |
| Expiry date | Aug 19, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2219/182
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides a process for adhering a liquid to a particulate substrate. The process comprises the steps of: PA1 a) providing an apparatus which can create an oscillating magnetic field within a chamber, PA1 b) providing particulate magnetic material within the chamber of said apparatus while said oscillating field is active, PA1 c) having in the chamber within the oscillating magnetic field a liquid coating material and a particulate substrate to be coated with said liquid, PA1 d) and having said magnetic field form a fluidized bed of at least said particulate magnetic material, said liquid coating material coating the surface of the particulate substrate, and PA1 e) optionally continuously collecting the coated particulate substrate. The particulate magnetic material may be added to the chamber before or after the magnetic field has been activated to oscillate. The field may be active when the magnetic particles are added, and the field may be activated only after the magnetic particles are present as a non-fluidized sedentary bed. The liquid may likewise be added at any time. The liquid coating material may be added before the field is activated, or after the f…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.