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    TIRE COMPRISING SEALANT LAYER AND SOUND-ABSORBING MATERIAL LAYER
    1.
    发明公开
    TIRE COMPRISING SEALANT LAYER AND SOUND-ABSORBING MATERIAL LAYER 审中-公开

    公开(公告)号：EP4450302A1

    公开(公告)日：2024-10-23

    申请号：EP22907983.5

    申请日：2022-12-15

    申请人： HANKOOK TIRE & TECHNOLOGY CO., LTD

    发明人： NOH, Kyu Dong ,  SEO, Byeong Ho

    IPC分类号： B60C19/00 ,  B60C9/00

    摘要： The present invention relates to a tire including a sealant layer and a sound-absorbing material layer, and the tire includes a sound-absorbing material layer located on the inner surface of the tire, and a sealant layer disposed between the inner surface of the tire and the sound-absorbing material layer, and applied on the inner surface of the tire, wherein the sound-absorbing material layer includes a first porous material having closed cells, and a second porous material having open cells, so that the tire may self-seal in the event of a puncture by including the sealant layer applied on the inner surface of the tire, may have noise reduction performance by including the sound-absorbing material, and even if a nail penetrates the tire and sealant and reaches the sound-absorbing material, may prevent fine fragments of the sound-absorbing material from degrading the function of the sealant and maintain the noise reduction performance.

    TIRE
    2.
    发明公开
    TIRE 审中-公开

    公开(公告)号：EP4446132A1

    公开(公告)日：2024-10-16

    申请号：EP22903751.0

    申请日：2022-05-16

    申请人： BRIDGESTONE CORPORATION

    发明人： ONO, Takatoshi

    IPC分类号： B60C13/00 ,  B60C15/06 ,  B60C19/00

    摘要： A tire 1 includes a side rubber 8, a bead filler 4b, a carcass 5, and a communication device 10, in which the communication device includes a RF tag 10e and a tag coating rubber portion 10f coating the RF tag, the communication device is disposed between the side rubber and the bead filler, a 100% modulus M100 of the side rubber is lower than a 100% modulus M100 of the tag coating rubber portion, a 100% modulus M100 of the tag coating rubber portion is lower than a 100% modulus M100 of a contacting bead filler portion of the bead filler in contact with the communication device, a loss tangent tanδ of the side rubber is greater than a loss tangent tanδ of the contacting bead filler portion, and a thermal conductivity of the carcass cord is higher than a thermal conductivity of each of the contacting bead filler portion and the tag coating rubber portion.

    TIRE
    3.
    发明公开
    TIRE 审中-公开

    公开(公告)号：EP4446128A1

    公开(公告)日：2024-10-16

    申请号：EP22903754.4

    申请日：2022-05-16

    申请人： BRIDGESTONE CORPORATION

    发明人： ONO Takatoshi

    IPC分类号： B60C1/00 ,  B60C13/00 ,  B60C17/00 ,  B60C19/00

    摘要： A tire 1 includes a side-reinforcing rubber having a crescent-shaped cross section 2 disposed in a sidewall portion 1b of the tire, a low-thermal-conductivity member 3 having a lower thermal conductivity than that of the side reinforcing rubber, and a communication device 10, in which the low-thermal-conductivity member is positioned between the side reinforcing rubber and the communication device.

    RFID-TAG COATING RUBBER COMPOSITION, AND TIRE
    5.
    发明公开
    RFID-TAG COATING RUBBER COMPOSITION, AND TIRE 审中-实审

    公开(公告)号：EP4427947A1

    公开(公告)日：2024-09-11

    申请号：EP22889735.1

    申请日：2022-10-11

    申请人： BRIDGESTONE CORPORATION

    发明人： SUZUKI, Yoshihiko

    IPC分类号： B60C19/00 ,  B60C1/00 ,  C09D7/61 ,  C09D7/63 ,  C09D107/00

    CPC分类号： C09D107/00 ,  C09D7/61 ,  B60C1/00 ,  C09D7/63 ,  B60C19/00

    摘要： An RFID-tag coating rubber composition comprises: a rubber component; sulfur; silica; and a guanidine-based vulcanization accelerator, wherein the sulfur includes insoluble sulfur, and a content of the sulfur is 6.0 parts by mass or more with respect to 100 parts by mass of the rubber component. The RFID-tag coating rubber composition can achieve satisfactory communication performance, satisfactory resistance to cracking, satisfactory adhesiveness to an adjacent rubber member, and satisfactory elastic modulus simultaneously in a well-balanced manner and also is excellent in workability.

    TIRE TESTING METHOD, TIRE TESTING SYSTEM, AND PROGRAM
    7.
    发明公开
    TIRE TESTING METHOD, TIRE TESTING SYSTEM, AND PROGRAM 审中-实审

    公开(公告)号：EP4414681A1

    公开(公告)日：2024-08-14

    申请号：EP22878644.8

    申请日：2022-10-07

    申请人： Kokusai Keisokuki Kabushiki Kaisha

    发明人： MATSUMOTO Sigeru ,  MATSUMOTO Shinichi ,  MIYASHITA Hiroshi ,  MURAUCHI Kazuhiro ,  TOKITA Shuichi

    IPC分类号： G01M17/02 ,  B60C19/00

    CPC分类号： G01M17/02 ,  B60C19/00

    摘要： A tire testing method according to an embodiment of the present invention includes a first measurement step of measuring a µ-S characteristic of a test tire using a first tire testing device that causes the test tire to travel along a road surface in a state where the test tire is made to contact the road surface, a second measurement step of measuring the µ-S characteristic of the test tire using a second tire testing device that causes the test tire to rotate in a state where the test tire is made to contact a road surface provided on an outer periphery of a rotating drum, a comparing step of comparing the µ-S characteristic measured by the first tire testing device with the µ-S characteristic measured by the second tire testing device and obtaining a relationship between the two µ-S characteristics, a characteristic converting step of converting the µ-S characteristic measured by the second tire testing device to the µ-S characteristic by the first tire testing device based on the relationship between the two µ-S characteristics, and a characteristic synthesizing step of synthesizing the µ-S characteristic measured in the first measurement step and the µ-S characteristic obtained in the characteristic converting step to obtain the µ-S characteristic of the test tire.