Patent ID: 8506276
Filing Date: 2013-08-13
Classification: B29C,B29D,C08G,C08K,C08L

Abstract:
1. A method for manufacturing a bladder for use in manufacturing tires that comprises a surface-modified rubber layer on an outer surface side of a base rubber layer, comprising the steps of: forming an uncross-linked body of the surface-modified rubber layer by molding a rubber composition including a modified butyl rubber composition (A) or (B) and an organic peroxide and applying a siloxane compound having a (meth)acryloyl group to a surface of this rubber molded body; wherein the modified butyl rubber composition (A) comprises a modified butyl rubber ( forming the base rubber layer from an unvulcanized body or vulcanized body formed from a rubber composition different than the modified butyl rubber compositions (A) and (B); laminating the uncross-linked body of the surface-modified rubber layer on the outer surface side of the base rubber layer; and heat treating.