US 12,434,513 B2
Rubber member, tire, and method of manufacturing rubber member
Takahiro Okamatsu, Hiratsuka (JP); Masatsugu Shimomura, Chitose (JP); Yuji Hirai, Chitose (JP); Yasutaka Matsuo, Sapporo (JP); and Toshihiko Arita, Sendai (JP)
Assigned to The Yokohama Rubber Co., LTD., Tokyo (JP)
Filed by The Yokohama Rubber Co., LTD., Tokyo (JP); Chitose Institute of Science and Technology, Chitose (JP); National University Corporation Hokkaido University, Sapporo (JP); and Tohoku Techno Arch Co., Ltd., Sendai (JP)
Filed on Feb. 22, 2023, as Appl. No. 18/113,006.
Application 18/113,006 is a division of application No. 17/374,854, filed on Jul. 13, 2021, abandoned.
Application 17/374,854 is a division of application No. 16/098,819, abandoned, previously published as PCT/JP2017/017216, filed on May 2, 2017.
Claims priority of application No. 2016-092388 (JP), filed on May 2, 2016.
Prior Publication US 2023/0191852 A1, Jun. 22, 2023
Int. Cl. B60C 13/00 (2006.01); B29C 59/02 (2006.01); B29D 30/72 (2006.01); B60C 1/00 (2006.01); C08K 3/04 (2006.01); C08K 3/36 (2006.01); C08L 7/00 (2006.01); C08L 9/00 (2006.01); C08L 19/00 (2006.01)
CPC B60C 13/001 (2013.01) [B29C 59/02 (2013.01); B29D 30/72 (2013.01); B60C 1/00 (2013.01); B60C 1/0025 (2013.01); B60C 13/00 (2013.01); C08K 3/04 (2013.01); C08K 3/36 (2013.01); C08L 7/00 (2013.01); C08L 9/00 (2013.01); C08L 19/00 (2013.01); B29D 2030/726 (2013.01)] 2 Claims
OG exemplary drawing
 
1. A method of manufacturing the rubber member, said rubber member being comprised of a ridged or grooved structure on at least a part of a surface of the rubber member, and having ridged or grooved portions arranged at a constant arrangement pitch, each of the ridged or grooved portions having a same length and width when viewed in plan view, a region in which the ridged or grooved structure is provided being visually recognizable by a structural color different from colors of other regions, the method comprising:
forming a mask having a pattern structure of the ridged or grooved portions arranged at the constant arrangement pitch and, in the forming the mask, determining the pitch of the pattern structures of the ridged or grooved portions based on determining the arrangement pitch of the ridged or grooved portions which is based on a wavelength of visible light, the wavelength corresponding to the color visually recognizable as the structural color;
arranging the mask on a substrate made of a metal or a semiconductor material and etching the substrate to form the ridged or grooved structure on the substrate;
adhering unvulcanized rubber to the substrate after the etching, vulcanizing the unvulcanized rubber to form vulcanized rubber, and transferring the ridged or grooved structure to a surface of the vulcanized rubber to obtain the rubber member, the rubber member being part of a tire.