Patent ID: 7674348
Filing Date: 2010-03-09
Classification: B32B,B60R,C08G,C08K,C08L

Abstract:
1. A method of improving adherence between a first silicone rubber which is obtained by curing an air bag sealer silicone rubber composition and a second silicone rubber with which base fabric pieces are impregnated and/or covered, comprising: laying a pair of the base fabric pieces impregnated and/or coated with the second silicone rubber one on the other, with the coated surfaces of the pieces inside; applying as a sealer an addition reaction curing type silicone rubber composition to peripheral portions of the base fabric pieces to be jointed; bonding or sticking the peripheral portions of the pieces together to form a bag; and curing the addition reaction curing type silicone rubber composition to seal the bonding or sticking portion with the first silicone rubber, wherein said addition reaction curing type silicone rubber composition comprises (i) an organopolysiloxane containing at least two alkenyl radicals in a molecule, (ii) an organohydrogenpolysiloxane containing at least two silicon atom-bonded hydrogen atoms in a molecule, (iii) a platinum group metal catalyst, and (iv) an inorganic filler comprising an aluminum hydroxide in an amount of 21.3 to 37.2 parts by weight per 100 parts by weight of component (i), and silica in an amount of 14.1 to 15.6 parts by weight per 100 parts by weight of all the components excluding silica, the first silicone rubber having an elongation at break of at least 1000%.