Charles G. Goossen - Hudson WI Stanley G. Peterson - Minneapolis MN
Assignee:
Minnesota Mining and Manufacturing Company - St. Paul MN
International Classification:
B41N 900
US Classification:
428241
Abstract:
A printing blanket especially suited for use in offset lithography is provided by permanently laminating together an oil-resistant continuous rubber ink transfer layer, a strong thin tough synthetic foundation sheet, and a layer of incompressible elastomer having dispersed and bonded therein numerous minute frangible rigid-walled bubbles that have been broken uniformly throughout the elastomer layer to make it compressible.
Minnesota Mining and Manufacturing Company - St. Paul MN
International Classification:
B21B 3108 B60B 702
US Classification:
29131
Abstract:
A printing dampening roll cover of composite construction having an inner textile fabric layer and an outer non-woven layer, the two layers being concentrically disposed and bonded at the interface to form a water-permeable, integral structure which can be expanded for ready placement on the dampener roll and shrunk in situ to fit snugly on the roll during use.