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Manufacturing method of rubber member for tire

A rubber and component technology, applied in tires, other household appliances, household appliances, etc., can solve problems such as poor pressing effect, and achieve the effects of improving adhesion, good uniformity, and suppressing air storage chambers

Inactive Publication Date: 2007-07-04
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the pressing roller RT cannot move downward through the roller height HrM in the shoulder region, that is, beyond the apex ap (roller height HrM) of the bulge a on both sides in the axially outer side of the tire, the pressing operation in the shoulder region The suppression effect becomes worse

Method used

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  • Manufacturing method of rubber member for tire
  • Manufacturing method of rubber member for tire
  • Manufacturing method of rubber member for tire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0054] The tread rubber G1 of the pneumatic radial tire for passenger cars was manufactured based on the tire size 215 / 45ZR17 and the specifications shown in Table 1. Test its performance. In this case, the rubber strips are set to be the same. The results are shown in Table 1. In terms of test specifications, Figures 2 and 3 are set as Example 1, Figures 5 and 6 are set as Example 2, Figure 9 is set as Comparative Example 1, and Figure 10 is set as Comparative Example 2.

[0055] Example 1

[0056]20 of each tire were manufactured and the uniformity was measured. The radial force deviation (RFV) was measured as a parameter of the uniformity based on the uniformity test condition JASOC607:2000. The evaluation speed was set at 10 km / h. The results are represented by the average value (N) of 20 tires, the smaller the value, the better the result.

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PUM

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Abstract

In a strip wind construction method, the invention provides a manufacturing method of a rubber member for a tire which can reduce an air remnant in a rubber member. A rubber member has an inside first layer formed by spirally winding a rubber strip from a starting point corresponding to any one of reference positions of a center position of a wound body and a side edge to the other reference position in an axial direction in a half region between the center position and an outer edge in a tire axial direction of a winding region, and a second layer formed by folding back from a starting point corresponding to the other reference position to the other in an axial direction, and the reference position corresponding to the starting pint is set to a line-symmetrical position around the center position.

Description

technical field [0001] The present invention relates to a strip winding construction method of forming a tire rubber member by spirally winding a rubber strip, and more particularly, to a manufacturing method of a tire rubber member capable of reducing air entrapment in the rubber member. Background technique [0002] It has been considered to form rubber members at various positions of the tire, such as tread rubber, sidewall rubber, etc., by spirally winding a rubber strip made of a material corresponding to the required properties of the rubber member. Compared with the conventional extrusion molding method of continuous extrusion from a mouth piece having a predetermined finished cross-sectional shape, by the spiral winding construction method, nozzle mouth and management man-hours can be reduced. In addition, a small rubber extruder can be used, and small-scale production of various kinds can be realized. As described above, the strip-winding construction method (STW m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29D30/60
CPCB29D30/60B29D30/3028B29D30/3021
Inventor 三木洋二郎山森秀一
Owner SUMITOMO RUBBER IND LTD