Patent ID: 8057906

Claim:
A method of reducing surface tackiness of a silicone rubber cured product, comprising: coating a surface of a cured product of a curable silicone rubber composition with a curable silicone resin; and subsequently curing said silicone resin to form a cured silicone resin layer with a thickness of no more than 0.5 mm, wherein said curable silicone rubber composition comprises: (A) at least one organopolysiloxane having two alkenyl groups bonded to silicon atoms within each molecule, (B) at least one organopolysiloxane having three or more alkenyl groups bonded to silicon atoms within each molecule, (C) at least one organohydrogenpolysiloxane having two hydrogen atoms bonded to silicon atoms at the molecular terminals in a form of a dimethylhydrogensiloxy group, having 4 to 302 silicon atoms within each molecule, having [(C 6 H 5 )SiO 3/2 ] units in the molecule, having a branched structure and further having at least one organic group selected from the group consisting of an epoxy group, an acryloyl group, a methacryloyl group, and an alkoxy group, and (D) at least one platinum group metal-based catalyst; wherein said silicone rubber composition has a molar ratio of hydrogen atoms bonded to silicon atoms relative to alkenyl groups bonded to silicon atoms of 1.5 to 2.0, and following curing, exhibits a type A hardness prescribed in JIS K6253 of no more than 20; wherein organohydrogenpolysiloxanes present in said curable silicone rubber composition consist of component (C); said curable silicone resin is a resin that exhibits a type D hardness prescribed in JIS K6253 of 30 or greater in the cured state; and said type D hardness prescribed in JIS K6253 of 30 or greater is a value when a cured layer of said curable silicone resin with a thickness of 6 mm or more is measured according to JIS 6253.