Method of curing a compressible printing blanket and a compressible printing blanket produced thereby
US4770928A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 1986 |
| Grant date | Sep 13, 1988 |
| Priority date | — |
| Expiry date | Jun 9, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/335
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A laminated printing blanket having compressible and resilient properties and a method for its production are provided. The compressible characteristics are provided by disposing an intermediate layer having substantially uniformly distributed voids of substantially uniform size between the base layer and the surface layer of the printing blanket. The voids of the compressible intermediate layer are formed by introducing microcapsules into an elastomeric compound formulated for production of the intermediate layer, and by vulcanizing the intermediate layer at a temperature below the melting point of the microcapsules to a degree sufficient to fix the microcapsules in place within the structure of the intermediate layer. A final vulcanizing step completes the curing of all layers to produce a laminated unitary blanket.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.