Procuring composite layer tread rubber for tyre retreading

A tire retreading and tread rubber technology, which is applied in the field of rubber tire manufacturing, can solve the problems of increasing the overall manufacturing cost of tread rubber, and achieve the effects of reducing production costs, ensuring normal use, and high elasticity

Inactive Publication Date: 2009-11-04
SAILUN GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since the part of the sidewall close to the rim is not in contact with the ground, if the performance index of wear resistance is required, the overall manufacturing cost of the tread rubber will be increased accordingly

Method used

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  • Procuring composite layer tread rubber for tyre retreading

Examples

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Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1 provides a brand-new pre-vulcanized composite layer tread rubber according to the following proportions.

[0017] Crown tread rubber layer, 100 parts of rubber, 60 parts of high wear-resistant carbon black, 10 parts of white carbon black, 6 parts of active agent, 4 parts of anti-aging agent, 20 parts of aromatic oil, 1.5 parts of sulfur, and 1.5 parts of accelerator;

[0018] Base rubber layer, 100 parts of rubber, 30 parts of carbon black, 10 parts of white carbon black, 5 parts of active agent, 3 parts of anti-aging agent, 1.5 parts of sulfur, and 1.5 parts of accelerator.

[0019] Wherein, the outer surface of the cap tread rubber layer forms several staggered protrusions through a vulcanization process.

[0020] The crown tread rubber layer and the base rubber layer are superimposed on each other and pre-vulcanized by an annular vulcanizer. The prepared composite tread rubber is annular.

[0021] The manufacturing process of pre-vulcanized composite la...

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PUM

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Abstract

The invention relates to a procuring composite layer tread rubber for tyre retreading. A basal rubber layer is connected on the inner surface of a tread rubber layer at the crown part, the basal rubber layer is provided with different formula component materials to meet the performance requirements of high elasticity and lower heating, therefore, the cost of the rubber material used for the tread rubber is effectively reduced and the normal use of the retreaded tyre is also ensured. The basal rubber layer comprises the following formula components according to the parts by weight: 100 of rubber, 25-45 of black carbon, 5-10 of white carbon black, 3-5 of activating agent, 2-5 of antioxidant, 1-3 of sulfur and 1-3 of promoter. In the formula of the basal rubber layer, the high wear-resistant black carbon and other components are not included, therefore, the basal rubber layer does not have the performance indexes of abrasion resistance and tear resistance, and the contact friction with the ground is realized through the tread rubber layer at the crown part.

Description

technical field [0001] The invention relates to a tread rubber specially used for tire retreading, in particular to a composite tread rubber compounded by using two rubber materials with different properties and components through a pre-vulcanization process, and belongs to the field of rubber tire manufacturing. Background technique [0002] After long-term load operation of various vehicle tires, the surface rubber layer groove pattern is worn to varying degrees by friction with the ground, and the tires cannot produce sufficient friction with the ground, which easily leads to vehicle skidding or brake failure. In order to reduce the environmental pollution and waste of resources caused by tire scrapping, tires are usually re-used through retreading. [0003] Existing tire retreading technology usually adopts that prevulcanized tread rubber is pasted on the carcass through polishing, and then is sent into a vulcanization tank to be vulcanized again to form a new tire. How...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L21/00C08K5/01B29D30/56B29C35/02B32B25/00C08K3/36C08K3/04C08K3/06
Inventor 杨德华王斐仇世剑宋汀崔元国
Owner SAILUN GRP CO LTD
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