Shoe outsole
OwnerIkuko Umezawainventor
Life of this patent
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Abstract
An outsole (1) comprises a projection (2) provided on a bottom face. A portion of the bottom face other than the projection (2) is a concave portion (3). The outsole (1) is molded by crosslinking a rubber composition. A base polymer of the rubber composition contains 30% by weight or more of an acrylonitrile-butadiene rubber having a glass transition point of −40° C. to 0° C. A loss factor curve of the outsole (1) has a peak temperature of −30 ° C. to 0° C. The peak temperature of the loss factor curve is measured by means of a viscoelasticity spectrometer. The measurement is carried out on such a condition that an initial strain is 10%, an amplitude is ±2%, a frequency is 10 Hz, a starting temperature is −100° C., an ending temperature is 100° C., a temperature rising speed is 3° C./min and a deformation mode is a tension.
Claims4
A shoe outsole formed by crosslinking a rubber composition,
- wherein a peak temperature of a loss factor curve measured by a viscoelasticity spectrometer is −30° C. to 0° C. on such a condition that an initial strain is 10%, an amplitude is ±2%, a frequency is 10 Hz, a starting temperature is −100° C., an ending temperature is 100° C., a temperature rising speed is 3° C./min and a deformation mode is a tension, and
- a base polymer of the rubber composition contains 30% by weight or more of an acrylonitrile-butadiene rubber having a glass transition point of −40° C. to 0° C.
A shoe comprising an outsole formed by crosslinking a rubber composition,
- wherein a peak temperature of a loss factor curve measured by a viscoelasticity spectrometer is −30° C. to 0° C. on such a condition that an initial strain is 10%, an amplitude is ±2%, a frequency is 10 Hz, a starting temperature is −100° C., an ending temperature is 100° C., a temperature rising speed is 3° C./min and a deformation mode is a tension in the outsole, and
- a base polymer of the rubber composition contains 30% by weight or more of an acrylonitrile-butadiene rubber having a glass transition point of −40° C. to 0° C.
Dependencies are inferred from the claim text.