Process and apparatus for producing synthetic decorative covering
US4675216A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 1984 |
| Grant date | Jun 23, 1987 |
| Priority date | — |
| Expiry date | Mar 12, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05D2401/32
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A process and apparatus for manufacturing synthetic decorative coverings is presented in which at least one powder (generally a polymeric resin) is selectively deposited, in accordance with a pattern or decoration, onto a base material. The power deposition is carried out under gravity without contact between the means of applying the powder and the base. At least one of the deposited powders contains particles which are fusible at a temperature below the distortion temperature of the base and which is compatible with the base material. At least one thermal treatment is then carried out at a temperature below the distortion temperature of the base so as to fix the decorative pattern produced by deposited powders. The apparatus for applying the powders consists of a continuous screen printing frame, in particular, a screen printing roller which is fed by a device providing uniform distribution of the powder into a hopper located inside the roller. The hopper has two longitudinal blades which are adjustably separated and are in contact with the inner surface of the screen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.