pneumatic tire

A pneumatic tire and tire technology, applied in tire parts, textiles and papermaking, transportation and packaging, etc., can solve problems such as driver discomfort, achieve easy formation, excellent low fuel consumption performance, and suppress radio noise.

Inactive Publication Date: 2017-03-01
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, static electricity can cause discomfort to the driver due to sparking

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0130] made with Figure 1~3 The structure of the tire shown. The size of this tire is "195 / 65R15". The tire has a through portion. The penetrating portion has a topping rubber and a cord. The topping rubber is molded by crosslinking a rubber composition. The rubber composition comprises: 100 parts by mass of styrene-butadiene copolymer (trade name "SBR1500" of JSR Company), 50 parts by mass of silicon dioxide (trade name "ULTRASIL VN3" of Degussa Company), 5 parts by mass Parts of silane coupling agent (trade name "Si69" of Degussa Company), 1 mass part of wax (trade name "SUNNOC N" of Ouchi Shining Chemical Industry Co., Ltd.), 2 mass parts of anti-aging agent (Ouchi Shining Chemical Co., Ltd. Industrial company's trade name "NOCRAC 6C"), 1 part by mass of stearic acid (NOF Corporation), 3 parts by mass of zinc oxide (trade name of Mitsui Metal Mining Co., Ltd. "Yaqianhua No. 1"), 1.5 parts by mass Powdered sulfur (Tsurumi Chemical Co., Ltd.) and 1.5 parts by mass of vu...

Embodiment 2-15

[0135] Tires of Examples 2-15 were obtained in the same manner as in Example 1, except that the specifications of the penetration portions were as shown in Tables 1-4 below.

Embodiment 16

[0141] A tire of Example 16 was obtained in the same manner as in Example 1, except that the specifications of the penetration portion were as shown in Table 5 below. Such as Figure 13 As shown, the cord of this tire has a core and a sheath covering the core. The core consists of conductive filament bundles. Each conductive filament was spun from a resin composition containing 100 parts by mass of nylon 66 and 10 parts by mass of ketjen black. The sheath consists of multiple non-conductive filaments. Each non-conductive filament was spun from nylon 66.

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Abstract

The invention provides a pneumatic tire (2), which is easy to discharge static electric. Energy consumption is low, and efficiency is high. The tire (2) has a through portion (46) passing through the tire surface, the through portion (46) has bonding rubber (70) and a plurality of cord threads (72) which are not conductive. The rubber composite of the bonding rubber (70) contains SiO2 as main additive. The cord threads (72) are extended along the direction vertical to the circumference direction of the tire surface (32) and are conductive. One end (74) of each cord thread (72) is exposed on the tire surface (33), and the other end (76) is exposed on the inner surface (78) of the tire surface (32). The cord threads (72) include a plurality of long wires and a non-conductive portion. The conductive long wires are rolled to form a spiral shape around the non-conductive portion.

Description

technical field [0001] The present invention relates to pneumatic tires. Specifically, the present invention relates to a pneumatic tire having a non-conductive tread. Background technique [0002] As a reinforcing agent for tire treads, carbon black is generally used. Carbon black is a conductive substance. A tread containing carbon black is excellent in electrical conductivity. Static electricity generated in the vehicle is discharged from the tire to the road surface. [0003] Silica may be added to the tread instead of carbon black or together with carbon black. By compounding silica, a tire with low rolling resistance can be obtained. The tire is excellent in low fuel consumption performance. Silica is a non-conductive substance. Tires with a tread containing silica are less conductive. Vehicles equipped with these tires are prone to static electricity. Static electricity can cause radio noise. In addition, static electricity can cause discomfort to the driver...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60C19/08
CPCD07B1/062D02G3/48D10B2401/16
Inventor 宫崎真一
Owner SUMITOMO RUBBER IND LTD
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