Rubber blanket sleeve for an offset printing machine and method of making

A rubber blanket sleeve for a channel-free rubber blanket cylinder of an offset printing machine comprising:

• an inner, dimensionally stable support sleeve arranged as a supporting layer;
• a thin bonding agent layer affixed to said support sleeve;
• a microporous, closed pore, compressible elastomer layer having a compressibility within a range between about 7% and 15% with a load of 100 N/cm2;
• said elastomer layer comprising a rubber matrix having a tensile stress of greater than about 2.2 N/mm2 and less than about 15 N/mm2 with 100% elongation;
• a thin layer of a bonding agent applied to said microporous elastomer layer;
• and
• an outer covering rubber layer arranged as a printing layer,
• wherein all of the layers are composed of seamless, cylindrical bodies and are affixed to one another.

A process of producing a rubber blanket sleeve for a channel-free rubber blanket cylinder of an offset printing machine, the process comprising:

• arranging an inner, dimensionally stable support sleeve as a supporting layer;
• positioning a microporous compressible elastomer layer having a compressibility within a range between about 7% and 15% with a load of 100 N/cm2 over the support sleeve, wherein the elastomer layer comprises a rubber matrix having a tensile stress of greater than about 2.2 N/mm2 and less than about 15 N/mm2 with 100% elongation;
• and
• arranging an outer covering rubber layer as a printing layer,
• wherein all of the layers are composed of seamless, cylindrical bodies and are coupled to one another.