Method of making a silicone rubber windshield wiper
AssigneeSpecialty Silicone Products, Inc.
InventorNed J. Reo
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Abstract
High performance silicone rubber windshield wiper blades are provided as a result of molding a tintable platinum group metal catalyzed silicone compositions having an intrinsic viscosity of less than 1.3. Improved lubricity with respect to windshield wiper glass is achieved by a molding procedure which effects a transfer such as a migration, or diffusion of release agent, for example polytetrafluoroethylene, into the surface of the silicone rubber windshield wiper blade.
Claims20
A method for making a silicone rubber windshield wiper exhibiting an improved reduction in the coefficient of friction when in contact with automotive windshield glass, comprising the steps of:
- providing a mold having at least a portion of an interior surface thereof pretreated with polytetrafluoroethylene resin;
- applying a release agent to a surface of a heat curable platinum catalyzed silicone composition to be formed into the wiper;
- introducing the heat curable platinum catalyzed silicone composition into the mold to create the wiper;
- and
- curing the heat curable platinum catalyzed silicone composition to form the wiper.
A method for making a silicone rubber windshield wiper exhibiting an improved reduction in the coefficient of friction when in contact with automotive windshield glass, comprising the steps of:
- providing a mold having at least a portion of an interior surface thereof pretreated with polytetrafluoroethylene resin;
- applying a release agent to a surface of a silicone rubber composition to be formed into the wiper;
- introducing the silicone rubber composition into the mold to create the wiper;
- and
- curing the silicone rubber composition to form the wiper.
Dependencies are inferred from the claim text.