Printing blanket having improved dynamic thickness stability

Details Printing blanket having improved dynamic thickness stability Printing blanket having improved dynamic thickness stability

B - Operations, Transporting

41

N

B41N 10/02 (2006.01)

Patent

CA 2626509

A printing blanket is provided which resists gauge loss throughout its useful life when subjected to printing nip pressures. The printing blanket includes a printing surface layer and at least one fabric ply. The fabric ply is treated by impregnation with a 100 % solids elastomeric urethane compound which penetrates the air spaces of individual fiber bundles in the fabric ply and fixes the individual fibers in the ply from relative movement so that that the blanket is resistant to permanent deformation. The blanket including the treated fabric ply retains at least 95% of its original gauge throughout its useful life.

Toile d'impression résistant à la perte d'épaisseur pendant toute sa durée de vie utile lorsqu'elle est soumise aux pressions de pincement de ligne d'impression. La toile d'impression comprend une couche superficielle d'impression et au moins une couche de tissu. La couche de tissu est traitée par imprégnation avec un composé d'uréthane élastomérique à 100 % de solides qui pénètre dans les espaces d'air des faisceaux individuels de fibres dans la couche de tissu et bloque le mouvement relatif des fibres individuelles dans la couche de telle sorte que la toile soit résistante à une déformation permanente. La toile comprenant la couche de tissu traitée conserve au moins 95% de son épaisseur d'origine pendant toute sa durée de vie utile.

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