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Custom pre-cured retread

A tire retreading and pre-curing technology, applied to tire parts, tire tread/tread pattern, tire, etc., can solve the problems of high initial cost, expensive, low retreading cost, etc.

Inactive Publication Date: 2013-08-28
MICHELIN RECH & TECH SA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such tires can be very expensive and so are purchased with the expectation that their high initial cost is offset by the long life of the carcass and the relatively low cost of retreading

Method used

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  • Custom pre-cured retread
  • Custom pre-cured retread
  • Custom pre-cured retread

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] Certain embodiments of the present invention provide retreaded tires having a pre-cured tread band and, in certain embodiments, a tread band bonding surface bonded to the tire (the bonding surface is located between the thickness variations of the tire and / or on top of an asymmetric bonding layer) of a precured tread band, and a method for producing such a retreaded tire is provided. Varying thickness and / or asymmetrical bonding layers can create, for example, a varying thickness, asymmetrical base layer to bond the tread band to the tire, where a pre-existing tire's tread has experienced, for example, uneven wear or manufacturing defects Such a base layer may arise from time to time. Certain embodiments utilize a bonding layer of varying thickness to fill the area between the desired bonding location of the tread band and the bonding surface of the tire, the tread band being located at a desired distance from the bonding surface to form a retread of a particular size o...

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PUM

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Abstract

The invention includes a retread tire and methods and apparatus for its manufacture, the retread tire including: a tire carcass having a bonding surface arranged along a base layer, the base layer being positioned between the bonding surface and a belt reinforcement package and including at least one base groove open to the bonding surface and a thickness that is variable and asymmetrical; a bonding layer having a thickness that is variable and asymmetrical; and a precured tread band bonded to the tire carcass, the precured tread band comprising a back face bonded to the bonding layer, a front face forming a ground-engaging surface and at least one tread groove extending through at least a portion of the tread band thickness and the back face having a discontinuity associated with the at least one tread groove, which is aligned with one of the at least one base groove.

Description

technical field [0001] The present application relates generally to retreaded tires, and more particularly to retreaded tires having a tread band matched to a prepared base tread. In certain embodiments, the thickness of the prepared base tread is variable and asymmetric. Background technique [0002] When a tire becomes worn, it can be repaired with new tread. For example, large truck tires and bus tires are commonly retreaded as part of a regular tire management program. The carcass of these types of tires is generally expected to last hundreds of thousands of miles and can be processed to have new tread adhered to it several times. Such tires can be very expensive and thus are purchased with the expectation that their high initial cost will be offset by a long useful life of the carcass and relatively low retreading costs. In fact, the economics involved in selecting and purchasing such tires often indicate that the original tire can be retreaded as many as three or fo...

Claims

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Application Information

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IPC IPC(8): B60C11/00
CPCB60C11/02B29D30/52B29D30/56B29D30/30B60C11/00
Inventor N·J·潘宁E·B·科尔比J·F·加勒特
Owner MICHELIN RECH & TECH SA
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