Method of preparing screen printing stencils using novel compounds and compositions
US4209582A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1978 |
| Grant date | Jun 24, 1980 |
| Priority date | — |
| Expiry date | Dec 18, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S522/904
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Screen printing stencils are prepared by affixing to a printing screen substrate an indicia-defining, ultraviolet-sensitive film and cross-linking the film by exposure to ultraviolet radiation. The coating compositions used to form the film comprise copolyacrylate/polyurethane block copolymers, in which the copolyacrylate blocks are copolymers of at least one hydroxy-containing acrylate and at least one acrylate or methacrylate which may be partially substituted with bromine, ultraviolet initiators and cross-linking monomers. Screen printing stencils are provided which are compatible with both water-based and oil-based inks. The disclosed screen printing stencils are used in improved screen-printing methods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.