公开(公告)号：US20200316997A1

公开(公告)日：2020-10-08

申请号：US16305167

申请日：2017-05-31

申请人： BRIDGESTONE CORPORATION ,  KURARAY CO., LTD.

发明人： Kentaro KAYASHIMA ,  Hiroyuki YOKOKURA ,  Toshikazu SUGIMOTO ,  Yasuhiro NONAKA ,  Makoto SUZUKI ,  Nahoto HAYASHI

IPC分类号： B60C5/14 ,  B60C1/00 ,  B29D30/06

摘要： This disclosure provides an inner liner of a pneumatic tire having high adhesiveness to an adjacent rubber member, which is an inner liner (100) of a pneumatic tire including a film layer (10) having at least a gas barrier layer (11) and an adhesion layer (20) disposed on at least one side of the film layer (10), where the gas barrier layer (11) contains at least a thermoplastic resin, the adhesion layer (20) contains at least a polystyrene-based thermoplastic elastomer, and the polystyrene-based thermoplastic elastomer has a styrene content of 40 mass % to 55 mass %.

公开(公告)号：US20180147889A1

公开(公告)日：2018-05-31

申请号：US15574840

申请日：2016-04-12

申请人： BRIDGESTONE CORPORATION

发明人： Hiroshi TAKADA ,  Hiroyuki YOKOKURA ,  Junko SAITO ,  Yuta HOSHINO

IPC分类号： B60C9/20 ,  B60C9/18

CPC分类号： B60C9/20 ,  B60C9/00 ,  B60C9/08 ,  B60C9/18 ,  B60C9/1835 ,  B60C9/2009 ,  B60C11/0306 ,  B60C2009/1885 ,  B60C2009/2016 ,  B60C2009/2019 ,  B60C2009/2022 ,  B60C2009/2038 ,  B60C2009/2048 ,  B60C2009/2074 ,  B60C2009/208 ,  B60C2009/2083 ,  B60C2009/2096 ,  B60C2011/0388

摘要： At a pneumatic tire (11), in a pneumatic tire in which a reinforcing layer (11) is structured from at least one reinforcing ply (53) in which are embedded plural reinforcing cords (54) that are formed from steel and are inclined with respect to a tire equator S, an inclination angle A of the reinforcing cords (54) with respect to the tire equator S is within a range of 40 to 90°, and a compressive rigidity F per 50 mm width of a reinforcing layer (52) in a direction parallel to the reinforcing cords (54) is within a range of 1000 to 2400 N.

公开(公告)号：US20190023083A1

公开(公告)日：2019-01-24

申请号：US16069606

申请日：2017-01-13

申请人： BRIDGESTONE CORPORATION

发明人： Masaki YANAGIOKA ,  Hiroyuki YOKOKURA ,  Makiko YONEMOTO

IPC分类号： B60C19/08 ,  B60C15/06

摘要： Provided is a pneumatic tire in which an electric resistance can be reduced without adversely affecting other performances such as tire durability or manufacturing processes even when low loss of a rubber member of the tire is attempted. The pneumatic tire includes a belt layer 2 provided at an outer side of a crown portion of a carcass 1 in a tire radial direction, and a rubber chafer 4 is provided at an outer surface of a bead portion in a tire width direction. A cushion rubber 13C and a tread rubber 13G are sequentially provided at an outer side of the belt layer in the tire radial direction, and a composite fiber 3 containing a conductive fiber and a non-conductive fiber extends at least from the bead portion to a position in contact with the cushion rubber or a belt under cushion arranged at an outer end portion of the belt layer in the tire width direction in such a manner as to be exposed on at least one surface the carcass at either the outer and inner sides of the tire, and the rubber chafer contains a carbon black having a nitrogen adsorption specific surface area of 30 to 43 m2/g.