Apparatus and methods for application of coatings with supercritical fluids as diluents by spraying from an orifice
US5171613A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 21, 1990 |
| Grant date | Dec 15, 1992 |
| Priority date | — |
| Expiry date | Sep 21, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29B7/7447
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
This invention is directed to improved spraying apparatus for coating substrates with a coating material and supercritical fluid which apparatus is provided with various features, either alone or in combination, to prevent undesirable premature cooling of the coating mixture which might detrimentally affect the final coating on the substrate; to prevent undesirable depressurization of supercritical fluid contained in the coating mixture which remains in the spray gun after spraying has been stopped; and/or to desirably provide the ability to mix the components of the coating mixture directly in the spray gun. Methods for utilizing these features in the spraying apparatus of the present invention are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.