Screen printing stencil
US6333137A · kind A · utility
2Cited by
6References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 15, 1998 |
| Grant date | Dec 25, 2001 |
| Priority date | — |
| Expiry date | Oct 15, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/0388
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A photopolymerizable composition for making screen printing stencils. The composition comprises polyvinyl alcohol having at least one photocrosslinkable group appended thereto. At least one metal salt, wherein the metal is selected from: aluminum, zinc, chromium, zirconium, titanium, tin or iron, is added to the composition. The metal salt is used to improve water resistance of a screen printing image that is prepared from the photopolymerizable composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.