Patent ID: 6308624
Filing Date: 2001-10-30
Classification: B41N,Y10S

Abstract:
A method of producing a compressible layer for a printing blanket, comprising the steps of:(1) dispersing hollow microspheres each having a shell made of thermoplastic resin in unvulcanized matrix rubber, to produce a rubber composition;(2) laminating said rubber composition on at least one base fabric, to form a sheet-shaped intermediate member;(3) heating said intermediate member for one to fifty minutes under the following conditions of vulcanizing pressure Pv (kgf/cm.sup.2) and vulcanizing temperature Tv (.degree. C.) using a vulcanizer comprising a member for applying heat and pressure in direct contact with the intermediate member, to vulcanize the matrix rubber in a layer of said rubber composition according to the following equations:0<Pv.ltoreq.3.0 kgf/cm.sup.2Td.ltoreq.Tv.ltoreq.Td+50.degree. C.wherein Td is the deforming temperature (.degree. C.) where the hollow microspheres are heated under atmospheric pressure without applying pressure.