Compressible ply for printing blankets

Details Compressible ply for printing blankets Compressible ply for printing blankets

B - Operations, Transporting

32

B

B32B 5/18 (2006.01) B29C 70/02 (2006.01) B30B 15/06 (2006.01) B32B 25/02 (2006.01) B32B 27/28 (2006.01) B32B 33/00 (2006.01) B41N 10/04 (2006.01) C08J 5/12 (2006.01) C08J 9/32 (2006.01)

Patent

CA 2132735

A laminated printing blanket (5) having compressible and resilient properties and a method for its production are provided. The compressible characteristics are provided by disposing an intermediate layer (10) having substantially uniformly distributed voids (30) of substantially uniform size between the base ply (25) and the working surface (15) of the printing blanket. The voids (30) of the compressible intermediate layer (10) are formed by introducing high melting point microspheres formed from thermoplastic resins into an elastomeric matrix (35), coating said microspheres containing elastomeric matrix (35) upon an upper surface of the base ply (25) and then vulcanizing the coated base ply at a temperature of between about 80-150 °C for between about one and six hours to form the compressible layer having substantially uniform compression characteristics. Once all of the layers of the blanket are stacked, a final vulcanization treatment completes the curing of all the layers to produce a laminated printing blanket.

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