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    PNEUMATIC RADIAL TIRE
    2.
    发明公开
    PNEUMATIC RADIAL TIRE 失效
    RADIALER LUFTREIFEN

    公开(公告)号：EP0819554A4

    公开(公告)日：2001-04-04

    申请号：EP97901800

    申请日：1997-01-31

    申请人： YOKOHAMA RUBBER CO LTD

    发明人： SHIDA ZENICHIRO ,  HASHIMURA YOSHIAKI

    IPC分类号： B60C9/08 ,  B60C9/18 ,  B60C13/00 ,  B60C15/00 ,  B60C9/04

    CPC分类号： B60C15/0072 ,  B60C9/0207 ,  B60C9/08 ,  B60C9/18 ,  B60C15/0018 ,  B60C15/0045 ,  Y10T152/10855 ,  Y10T152/10864 ,  Y10T152/10873

    摘要： A pneumatic radial tire comprises at least one carcass layer (4) having reinforcing cords arranged therein and having both end portions (4A) turned up around right and left bead cores (5) from inside the tire to outside, and at least two belt layers (6) provided on the outer peripheral side of the carcass layer of the tread and having reinforcing cords arranged therein such that the directions of inclination of the reinforcing cords relative to the circumferential direction of the tire are opposite to each other and crossed. The carcass strength factor K defined by the formula (1): K (N/mm.kPa) = [number of reinforcing cords arranged (number/mm)] x [strength of reinforcing cords (N)] x [number of carcass layers] DIVIDED [maximum air pressure (kPa)] is 0.15 to 0.35 N/mm.kPa in the area including the center of the tread from the positions (P) which are spaced 10 % of the width of the belt layer (6B) inward from both edges (6b) of the belt layer (6B) of which width is the second largest among the belt layers, and 0.5 N/mm.kPa or more in the areas extending to the beads from the positions P.

    摘要翻译： 一种充气子午线轮胎包括至少一个胎体层（4），所述胎体层（4）具有布置在其中的增强帘线并且具有从轮胎内部围绕右胎圈芯和左胎圈芯（5）向外翻转的两个端部（4A），以及至少两个带层 （6），其设置在胎面的胎体层的外周侧并且具有布置在其中的增强帘线，使得增强帘线相对于轮胎周向的倾斜方向彼此相反并交叉。 由公式（1）定义的胎体强度因子K：K（N / mm.kPa）= [排列的增强帘线的数量（个/ mm）]×[增强帘线的强度（N）]×[胎体层的数量 ]包含胎面中心在内的区域中，从距离带束层（6B）的宽度的10％的位置（P）向内侧的区域（P）中，最大空气压力（kPa）为0.15〜0.35N / mm.kpa 从带束层中的第二大的带束层（6B）的两个边缘（6b）开始，并且在从P位置延伸到珠子的区域中为0.5N / mm.kPa以上。

    PNEUMATIC TIRE
    3.
    发明公开
    PNEUMATIC TIRE 失效
    LUFTREIFEN

    公开(公告)号：EP0761477A4

    公开(公告)日：1998-12-02

    申请号：EP96906909

    申请日：1996-03-21

    申请人： YOKOHAMA RUBBER CO LTD

    发明人： KAIDO HIROYUKI ,  YAMAKAWA KAZUTO ,  WATANABE JIRO ,  SHIDA ZENICHIRO ,  HASHIMURA YOSHIAKI

    IPC分类号： B60C1/00 ,  B60C5/14

    CPC分类号： B29D30/0681 ,  B29D2030/0682 ,  B60C1/0008 ,  B60C5/14 ,  B60C2005/145 ,  Y10T152/10855

    摘要： A pneumatic tire having an air-permeation prevention layer comprising a film or sheet of a polymer composition including a thermoplastic resin or a blend of a thermoplastic resin and an elastomer whose air permeability coefficient is 25x10-12CC.cm/cm2.sec.cmHg or smaller and whose Young's modulus of elasticity ranges 1 to 500 MPa, the film or sheet being disposed in such a manner that it has no joint portion in a circumferential direction of the tire at least over one circumferentially full length of the tire.

    摘要翻译： 一种具有防透气层的充气轮胎，该充气轮胎包括聚合物组合物的薄膜或片材，所述聚合物组合物包含热塑性树脂或热塑性树脂和弹性体的混合物，其透气系数为25×10-12CC.cm/cm2.sec.cmHg或 较小并且其杨氏弹性模量在1至500MPa的范围内的薄膜或片材，所述薄膜或片材以这样的方式设置，使得其至少在轮胎的一个周向全长上在轮胎的圆周方向上不具有接合部分。

    PNEUMATIC TIRE
    5.
    发明公开
    PNEUMATIC TIRE 失效
    LUFTREIFEN

    公开(公告)号：EP0761478A4

    公开(公告)日：1998-12-02

    申请号：EP96906910

    申请日：1996-03-21

    申请人： YOKOHAMA RUBBER CO LTD

    发明人： KAIDO HIROYUKI ,  YAMAKAWA KAZUTO ,  WATANABE JIRO ,  SHIDA ZENICHIRO ,  HASHIMURA YOSHIAKI

    IPC分类号： B60C1/00 ,  B60C5/14

    CPC分类号： B60C1/0008 ,  B60C5/14 ,  B60C5/142 ,  Y10T152/10855

    摘要： A pneumatic tire in which an air-permeation prevention layer (7) comprising a film of a polymer composition including a thermoplastic resin or a blend of a thermoplastic resin and an elastomer whose air permeability coefficient is 25x10 cc.cm/cm .sec.cmHg or smaller and whose Young's modulus of elasticity ranges 1 to 1,000 MPa is disposed so as to substantially cover portions of an inner surface of the tire extending from ends of a belt (6) at least 20mm towards the crown center (C) and at most portions of an inner surface of the tire extending from positions 20mm away from the belt ends towards a bead toward the crown center (C), while an air-permeation prevention layer (8) formed of rubber is disposed so as to substantially cover the remaining inner surface of the tire and in which an air-permeation prevention layer (8) having actual breaking elongations of 15% or larger in circumferential and radial directions of the tire is used on the side portion of the tire ranging from at least 0.5 to 0.65 times the cross-sectional height of the tire.

    摘要翻译： 1。一种充气轮胎，其特征在于，所述充气轮胎包括由热塑性树脂或热塑性树脂与透气系数为25×10 -12 cc.cm/cm的弹性体的混合物构成的聚合物组合物膜的透气防止层（7） 2·sec·cmHg或更小，并且其弹性杨氏模量在1至1,000MPa的范围内，以基本上覆盖从带（6）的端部延伸至至少20mm的轮胎内表面的一部分朝向冠部 中心（C），并且在距离带端部20mm的位置朝向胎冠中心（C）延伸的轮胎的内表面的大部分部分处，同时设置由橡胶形成的防透气层（8） 以基本上覆盖轮胎的其余内表面，并且其中在轮胎的侧部上使用在轮胎的周向和径向方向上具有15％或更大的实际断裂伸长率的防透气层（8） 从不等 轮胎的横截面高度的至少0.5至0.65倍。