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Process of producing cold re-treading rubber

A manufacturing method and tread rubber technology, which is applied in the field of cold retread manufacturing, can solve problems such as high temperature damage, poor tread wear resistance, and aging of the carcass, and achieve high vulcanization pressure, high rubber adhesion, and vulcanization temperature. stable effect

Inactive Publication Date: 2008-09-17
王彩霞
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Problems solved by technology

Its disadvantage is that the carcass is subjected to high temperature aging again during vulcanization, that is, it is damaged by high temperature again, so that the carcass can only be refurbished two to three times at most.
In addition, the tread wear resistance after hot flipping is poor, and its service life is only one-third of that of a new tire.

Method used

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  • Process of producing cold re-treading rubber

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Experimental program
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Effect test

Embodiment Construction

[0016] A kind of manufacture method of cold retread tread compound, such as figure 1 As shown, the following steps are taken:

[0017] a. Ingredients: weigh the raw materials according to the formula;

[0018] b. Mixing: Mix the weighed raw materials in the internal mixer according to the process, control the mixing temperature below 90°C, and then cool with cooling water to make a mixed rubber;

[0019] c. Extrusion: Control the extrusion temperature below 80°C, the thickness is 14-20mm, and extrude the mixed rubber to the required thickness on the extruder;

[0020] d. Vulcanization: Control the vulcanization pressure to 13-15MPa, time to 20-30min, and temperature to 145-165°C, put the extruded film into a specific mold, and put it into a flat vulcanizer for vulcanization.

[0021] e. Demoulding: remove the vulcanized adhesive tape from the mold;

[0022] f. Grinding: Grinding the working surface of the tread rough;

[0023] g. Finished product: inspection, marking, pack...

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Abstract

The present invention relates to tyre renewing technique, and is especially production process of cold retreading rubber. The production process includes the following steps: compounding material, mixing, extruding, sulfurizing, demolding, polishing and finishing. The present invention has the advantages of no high temperature ageing of tyre body, high utilization rate of tyre body, high sulfurizing pressure to result in high attachment, stable sulfurizing temperature and greatly raised wear resistance.

Description

technical field [0001] The invention relates to a tire retreading process, in particular to a method for manufacturing a cold retreaded tread. Background technique [0002] Tire retreading is mainly hot retreading, that is, the tread on the worn tire surface is worn off, and then the rubber compound is pasted and put into the mold for re-vulcanization. Its disadvantage is that the carcass is subjected to high temperature aging again during vulcanization, that is, it is damaged by high temperature again, so that the carcass can only be refurbished two to three times at most. In addition, the tread wear resistance after hot flipping is poor, and its service life is only one-third of that of a new tire. Contents of the invention [0003] In order to overcome the disadvantages of the above-mentioned heat retread, the present invention provides a manufacturing method of cold retread rubber. [0004] The technical scheme for realizing the above object is as follows: a method f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29D30/56
Inventor 王彩霞
Owner 王彩霞
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