Conveyor belt
AssigneeThe Yokohama Rubber Co., Ltd.
InventorAtsushi Miyajima
Life of this patent
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Abstract
A conveyor belt 10 is formed with a belt core body 14 covered by a cover rubber 12. The cover rubber 12 is formed with a shock resistance performance evaluation index, i.e., the product of an elongation at break Eb, a tensile strength at break TSb, and a loss tangent tan δ of 6000 or greater. The loss tangent tan δ is the ratio between a storage modulus and a loss modulus calculated from a stress when vibrations of a predetermined frequency are applied to cover rubber 12. The measurement conditions of the loss tangent tan δ are determined on the basis of a speed of an impact applied under the use conditions of the conveyor belt 10.
Claims4
A conveyor belt, comprising:
- a belt core body;
- and
- a cover rubber covering the belt core body;
- the cover rubber being formed with a shock resistance performance evaluation index value, which is a product of an elongation at break Eb, a tensile strength at break TSb, and a loss tangent tan δ, which is a ratio between a storage modulus and a loss modulus calculated from stress when vibrations of a selected frequency are applied to the cover rubber, the shock resistance performance evaluation index value being equal to or greater than a selected minimum value;
- wherein a measurement condition of the loss tangent tan δ is determined on a basis of a speed of an impact applied under a use condition of the conveyor belt.
Dependencies are inferred from the claim text.