A sheet transport roller having a high friction coefficient and a rubber composition for forming a roller main body thereof. The rubber composition of the present disclosure, which is a rubber composition for forming the roller main body of the sheet transport roller, contains a rubber component containing an ethylene-α-olefin copolymer and a rosin component.

A sheet transport roller having a high friction coefficient and a rubber composition for forming a roller main body thereof. The rubber composition of the present disclosure, which is a rubber composition for forming the roller main body of the sheet transport roller, contains a rubber component containing an ethylene-α-olefin copolymer and a rosin component.

A rubber composition capable of manufacturing a sheet transport roller having an excellent friction coefficient and wear resistance. A sheet transport roller rubber composition contains an ethylene-α-olefin-diene copolymer as a base rubber, a sulfur-based crosslinking agent, and a coumarone-indene resin. It is preferable that the sheet transport roller rubber composition be obtained by mixing the base rubber and the coumarone-indene resin at a temperature equal to or higher than a softening point of the coumarone-indene resin to prepare a mixture, and then mixing this mixture with a sulfur-based crosslinking agent.

A rubber composition capable of manufacturing a sheet transport roller having an excellent friction coefficient and wear resistance. A sheet transport roller rubber composition contains an ethylene-α-olefin-diene copolymer as a base rubber, a sulfur-based crosslinking agent, and a coumarone-indene resin. It is preferable that the sheet transport roller rubber composition be obtained by mixing the base rubber and the coumarone-indene resin at a temperature equal to or higher than a softening point of the coumarone-indene resin to prepare a mixture, and then mixing this mixture with a sulfur-based crosslinking agent.

A removable flexible jacket for use in a printing press having a transfer cylinder for transferring a freshly printed substrate. The removable flexible jacket comprises a coated beaded sheet adhered to an plastic sheet, wherein a plurality of images are printed on a downwards facing side of the plastic sheet and visible through the upwards facing side of the coated beaded sheet, wherein the plurality of images provide indications of how to cut the sheet to size to fit different sized transfer cylinders and indications of zones of the flexible jacket to promote selective cleaning of the flexible jacket during use in transferring printed substrates.

A removable flexible jacket for use in a printing press having a transfer cylinder for transferring a freshly printed substrate. The removable flexible jacket comprises a coated beaded sheet adhered to an plastic sheet, wherein a plurality of images are printed on a downwards facing side of the plastic sheet and visible through the upwards facing side of the coated beaded sheet, wherein the plurality of images provide indications of how to cut the sheet to size to fit different sized transfer cylinders and indications of zones of the flexible jacket to promote selective cleaning of the flexible jacket during use in transferring printed substrates.

The invention describes contact rolls for pressing at least one web of material, preferably a web of plastic film, against at least one rotating winding device, the contact roll comprising a surface layer.

At least two segments are provided which are spaced axially apart and which extend around, in which segments the quality of the surface layer differs from the quality of the other areas of the surface layer, at least some portions of said segments being in contact with the edges of the at least one web of material.

The invention describes contact rolls for pressing at least one web of material, preferably a web of plastic film, against at least one rotating winding device, the contact roll comprising a surface layer.

At least two segments are provided which are spaced axially apart and which extend around, in which segments the quality of the surface layer differs from the quality of the other areas of the surface layer, at least some portions of said segments being in contact with the edges of the at least one web of material.

Methods and systems for preventing wrinkles in a web passing through an accumulator. The accumulator comprises a plurality of rollers including at least one roller having an axis of revolution movable toward and away from the axis of revolution of another roller to release and store varying amounts of the web. At least one of the rollers has a nominally flat outer surface and at least one of the rollers has a profiled outer surface.

Methods and systems for preventing wrinkles in a web passing through an accumulator. The accumulator comprises a plurality of rollers including at least one roller having an axis of revolution movable toward and away from the axis of revolution of another roller to release and store varying amounts of the web. At least one of the rollers has a nominally flat outer surface and at least one of the rollers has a profiled outer surface.