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A kind of production technology of run-flat tire

A production process and technology of anti-explosion tires, applied to tire parts, tires, vehicle components, etc., can solve problems such as tire leakage, damage to tire dynamic balance, tire loss of anti-puncture function, etc., to achieve the effect of preventing air leakage

Active Publication Date: 2020-12-01
湖州金地塑业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The anti-puncture tire sealant produced by the existing technology will flow inside the tire, which not only makes the tire lose the anti-puncture function, but also destroys the dynamic balance of the tire, making the car unable to run at high speed
[0005] In response to the above problems, Chinese patent CN103374311B provides a reactive anti-puncture tire sealant, which will not melt even at higher temperatures. However, the tires produced by using this reactive anti-puncture tire sealant, after Long-term use has found that when the tire is punctured, although it has been automatically repaired by the sealant, it will not leak, but when the weather turns cold, the sealant will shrink, and the pores left after the puncture will be exposed again, which will cause flat tire

Method used

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  • A kind of production technology of run-flat tire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A high-strength puncture-resistant film includes a self-repairing sealant and a puncture-resistant sealant, and the puncture-resistant sealant is located on the inner surface of the self-repairing sealant.

[0031] The anti-puncture sealant is fixed to the inner surface layer of the self-repairing sealant by spraying.

[0032] The thickness of the self-repairing sealant is 1.5-2cm, and the thickness of the anti-puncture sealant is 2-4mm.

[0033] The anti-puncture sealant is a viscoelastic material, and the preparation method of the viscoelastic material is: mixing and dissolving polyurethane, aliphatic diisocyanate, surfactant, silver nitrate, deionized water and ethylene glycol, and acidic conditions Reaction at 100°C for 6-8h.

[0034] The content of aliphatic diisocyanate in the viscoelastic material is 10-20%, the content of surfactant is 0.8-3.6%, the content of silver nitrate is 0.3-1.6%, and the rest is polyurethane.

[0035] The self-repairing sealant is a re...

Embodiment 2

[0037] Such as figure 1 As shown, a run-flat tire produced by using the high-strength anti-puncture film includes a tire carcass 1, and a self-repairing sealant 2 and an anti-puncture sealant 3 sprayed on the inner surface of the tire carcass in sequence.

[0038] The thickness of the puncture-resistant sealant 3 is more than three times that of the self-repairing sealant 2 .

[0039] The tire production process includes the following steps:

[0040] Step 1), the tire carcass 1 is installed on the rotating rigid cylinder mould;

[0041] Step 2), spraying the self-repairing sealant 2 onto the inner surface of the tire carcass 1;

[0042] Described step 2) comprises the following steps:

[0043] In step a), the self-repairing sealant 2 is put into the first melting rubber cylinder for heating and melting, and after melting, it is sent into the first polymerizing cylinder and stirred evenly, and the self-repairing sealant 2 in the first melting rubber cylinder Driven by the p...

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Abstract

The invention discloses a production process of an explosion-proof tire. The production process comprises the following steps: 1), a tire body is fixed; 2), a self-repairing sealant is sprayed; 3), ananti-piercing sealant is melted and polymerized; 4), the anti-piercing sealant is sprayed for the first time; and 5), the anti-piercing sealant is sprayed for the second time. The anti-piercing sealant with good toughness is added on the surface layer of the anti-piercing sealant, after the sealant is applied to the tire, when the tire is punctured by sharp objects such as nails, the anti-piercing sealant is punctured, and the anti-piercing sealant cannot be pierced caused by the strong toughness of the anti-piercing sealant, and after the sharp objects such as the nails are pulled out, the anti-piercing sealant can be used for repairing the punctured places, and the air leakage is prevented; when the weather transfers coolly, and even if the anti-piercing sealant is reduced caused by thermal expansion and contraction, the broken holes are exposed again, and air leakage can be prevented by means of the anti-piercing sealant.

Description

technical field [0001] The invention relates to the technical field of tires, in particular to a production process of run-flat tires. Background technique [0002] Mix thermoplastic elastomer with modified tackifying resin, liquid plasticizer, anti-aging agent, etc. at 170-220 degrees Celsius, and spray the viscous mixture on the inner surface of the tire at 170-220 degrees Celsius and pressure with a high temperature resistant pump On, make puncture-proof tire. Its representative is the Chinese patent CN1303409A, which mixes SBS thermoplastic elastomer with a certain amount of adhesive, liquid plasticizer, etc., and coats the fluid on the inner surface of the tire at 200-250 degrees Celsius to obtain a puncture-resistant Leaky tire. [0003] In the prior art, in order to apply the anti-puncture tire sealant evenly to the inner surface of the tire, a hot-melt polymer material is used. These materials are self-adhesive soft elastic body materials at room temperature, but ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29D30/06B60C19/12
CPCB29D30/0685B29D2030/0697B60C19/12
Inventor 王国水张中一黄祖厚王新张惠良谭孟春
Owner 湖州金地塑业有限公司