Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Reexamination Certificate
2006-10-17
2006-10-17
Maki, Steven D. (Department: 1733)
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
C152S209400, C152S212000, C152S458000, C264S108000, C156S244180, C156S264000, C156S266000
Reexamination Certificate
active
07122090
ABSTRACT:
The present invention provides a studless tire excellent in performance on ice and snow in which digging friction is improved without losing adhesion friction. The studless tire has a tread comprising specific short fiber or plate-like material dispersed in diene rubber so as to be oriented in the tread thickness direction, wherein when measured at 25° C. the tread has a complex elastic modulus E1 in the tread thickness direction, and the sheet has a complex elastic modulus Eα in the extrusion direction and a complex elastic modulus Eβ in a 90° direction from the extrusion direction, when the rubber composition is made into 2 mm sheets with a roller and these moduli fulfill the following equation,in-line-formulae description="In-line Formulae" end="lead"?60≦(E1−Eβ)/(Eα−Eβ)×100≦100in-line-formulae description="In-line Formulae" end="tail"?and the tread has a specific tread rubber hardness. The tire is obtained using a tread prepared by extruding a rubber composition containing diene rubber and specific short fiber or plate-type material in a tube shape, thereby orienting the short fiber in the circumferential direction of the tube shaped rubber, then cutting the obtained rubber sheet parallel to the extrusion direction, rotating each piece 90° and laminating.
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Iwata Takuzo
Kikuchi Naohiko
Minakoshi Akira
Tanaka Yoshikazu
Taniguchi Norio
Birch & Stewart Kolasch & Birch, LLP
Maki Steven D.
Sumitomo Rubber Industries Ltd.
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