US 12,391,216 B2
Method for producing a wiper blade element comprising a composite layer made of a particle layer and a friction-reducing material
Daria Nikolaeva, Tienen (BE); Nicolaas Gotzen, Kortenberg (BE); Roel Dams, Geel (BE); Christian Wilms, Beringen-Koersel (BE); Peter Stassen, Uikhoven (BE); and Philip Claeskens, Hasselt (BE)
Assigned to Robert Bosch GmbH, Stuttgart (DE)
Appl. No. 17/419,912
Filed by Robert Bosch GmbH, Stuttgart (DE)
PCT Filed Dec. 17, 2019, PCT No. PCT/EP2019/085626
§ 371(c)(1), (2) Date Jun. 30, 2021,
PCT Pub. No. WO2020/141070, PCT Pub. Date Jul. 9, 2020.
Claims priority of application No. 10 2019 200 001.0 (DE), filed on Jan. 2, 2019.
Prior Publication US 2022/0080926 A1, Mar. 17, 2022
Int. Cl. B60S 1/38 (2006.01); C08K 3/04 (2006.01); C08L 7/00 (2006.01); C08L 11/00 (2006.01); C08L 23/16 (2006.01)
CPC B60S 1/38 (2013.01) [C08K 3/042 (2017.05); C08L 7/00 (2013.01); C08L 11/00 (2013.01); C08L 23/16 (2013.01); B60S 2001/3829 (2013.01); B60S 2001/3898 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A process for the production of a wiper rubber for a wiper blade and/or of a wiper blade with a wiper rubber, the process comprising
applying by a dry coating process a particle layer to an unvulcanized elastomer substrate,
vulcanizing the elastomer substrate with the particle layer applied thereon, and
after vulcanization, applying a friction-reducing material to the particle layer, thereby forming a friction-reducing layer, wherein the friction-reducing layer comprises friction-reducing particles and at least one binder.