Abstract: Provided is a wiper blade rubber which has excellent wiping properties and low friction properties with respect to both clean glass surfaces and glass surfaces that have been subjected to a water repellent treatment, and which maintains these properties for a long period of time. A wiper blade rubber which has a lip part wherein a coating layer is provided on a rubber substrate by (a) applying a first coating agent onto a part of the surface of the rubber substrate, (b) curing a first coating layer by heating the rubber substrate onto which the first coating agent is applied, (c) applying a second coating agent onto the surface of the rubber substrate which has the cured first coating layer and (d) drying the second coating agent.

Abstract: Provided is a wiper blade rubber which exhibits high adhesion to glass surfaces, excellent friction performance and excellent wiping performance, while being free from the occurrence of a bulge (blister) in a coating layer due to bleeding from a rubber substrate or blooming. A wiper blade rubber which has a lip part obtained by forming a coating layer on a rubber substrate by spray coating, and which is characterized in that: the coating layer is composed of a portion (A) that covers the rubber substrate and portions (B) that do not cover the rubber substrate; the portions (B) are a plurality of pores which are uniformly dispersed in the entire area of the coating layer and have diameters of 10 to 40 ?m; and the ratio of the total area of portion (A) that covers the rubber substrate to the total area of the portions (B) that do not cover the rubber substrate is from 40:60 to 60:40.

Abstract: Provided is a wiper blade rubber which has excellent wiping properties and low friction properties with respect to both clean glass surfaces and glass surfaces that have been subjected to a water repellent treatment, and which maintains these properties for a long period of time. A wiper blade rubber which has a lip part wherein a coating layer is provided on a rubber substrate by (a) applying a first coating agent onto a part of the surface of the rubber substrate, (b) curing a first coating layer by heating the rubber substrate onto which the first coating agent is applied, (c) applying a second coating agent onto the surface of the rubber substrate which has the cured first coating layer and (d) drying the second coating agent.

Abstract: Provided is a wiper blade rubber which exhibits high adhesion to glass surfaces, excellent friction performance and excellent wiping performance, while being free from the occurrence of a bulge (blister) in a coating layer due to bleeding from a rubber substrate or blooming. A wiper blade rubber which has a lip part obtained by forming a coating layer on a rubber substrate by spray coating, and which is characterized in that: the coating layer is composed of a portion (A) that covers the rubber substrate and portions (B) that do not cover the rubber substrate; the portions (B) are a plurality of pores which are uniformly dispersed in the entire area of the coating layer and have diameters of 10 to 40 ?m; and the ratio of the total area of portion (A) that covers the rubber substrate to the total area of the portions (B) that do not cover the rubber substrate is from 40:60 to 60:40.

Abstract: A wiper blade rubber having a coating film on both surfaces of the lip part, the coating film comprising a particulate solid lubricant and a binder and the binder having a 0.5% modulus of 1 MPa or more and an elongation to break of 1% or more.

Abstract: A wiper blade rubber having a coating film on both surfaces of the lip part, the coating film comprising a particulate solid lubricant and a binder and the binder having a 0.5% modulus of 1 MPa or more and an elongation to break of 1% or more.