Method for producing flexographic printing forms by thermal development
US8007984B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 11, 2004 |
| Grant date | Aug 30, 2011 |
| Priority date | — |
| Expiry date | Oct 26, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/36
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Flexographic printing plates are produced by thermal development by a process in which an imagewise exposed flexographic printing element is developed by heating and removing the softened, unpolymerized parts of the relief-forming layer, the flexographic printing element containing a styrene/butadiene block copolymer as a mixture with a plasticizer, and the proportion of butadiene which is present in 1,2-linked form being from 15 to 50% by weight, based on the block copolymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.