Pneumatic tire manufacturing method

A manufacturing method and technology of pneumatic tires, applied in tires, applications, household appliances, etc., can solve problems such as peeling and cracks, and achieve good durability

Inactive Publication Date: 2014-04-09
THE YOKOHAMA RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, the portion of the tire where the above-mentioned laminated sheet is arranged as a reinforcing sheet is usually used under severe conditions such as repeated loads over a long period of time, which often causes problems such as cracks and peeling.

Method used

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  • Pneumatic tire manufacturing method
  • Pneumatic tire manufacturing method
  • Pneumatic tire manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～10、 comparative example 1

[0076] Hereinafter, the manufacturing method of the pneumatic tire of this invention is demonstrated concretely using an Example etc. FIG.

[0077] As a sheet of the thermoplastic resin composition, as shown in Table 1, a thermoplastic resin composition having a thickness (t) of 0.13 mm and a melting point of 190 mm was prepared by blending N6 / 66 as a thermoplastic resin and BIMS as an elastomer at a ratio of 50 / 50. ℃ sheet.

[0078] On the other hand, as the connecting rubber layer, connecting rubber having a composition as shown in Table 2 and having a thickness of 0.7 mm was prepared.

[0079] [Table 1]

[0080]

parts by mass

BIMSa)

"Exxpro3035" manufactured by ExxonMobil Chemical Co., Ltd.

100

Zinc oxide

"Yaqianhua No. 3" manufactured by Zhengdong Chemical Industry Co., Ltd.

0.5

stearic acid

industrial stearic acid

0.2

Zinc stearate

"Zinc Stearate" manufactured by NOF Co., Ltd.

1

N6 / 6...

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Abstract

The present invention provides a method for manufacturing a pneumatic tire having an inner liner layer or reinforced sheet layer formed from a laminated sheet (1) by lap-splicing the ends thereof. In the laminated sheet (1), a sheet (2) obtained from a thermoplastic resin or a thermoplastic resin composition of a thermoplastic resin blended with an elastomer is laminated with a rubber (3). With the method, cracking and peeling near the spliced region of the laminated sheet do not occur after beginning travel on the manufactured pneumatic tire. The pneumatic tire manufacturing method according to the present invention, the method having a process of lap-splicing the ends of a laminated sheet (1) in which a sheet (2) obtained from a thermoplastic resin or a thermoplastic resin composition of a thermoplastic resin blended with an elastomer is laminated with a rubber (3) that undergoes vulcanizing adhesion to said thermoplastic resin or thermoplastic resin composition, sharpens the ends of the sheet (2) by heat-treatment at a stage after the cutting of lengths of the sheet (2), which is obtained from the thermoplastic resin or thermoplastic resin composition and is to be subjected to the lap-splicing process, and before the tire vulcanization process.

Description

technical field [0001] The present invention relates to a method of manufacturing a pneumatic tire. [0002] More specifically, it relates to a method of manufacturing a pneumatic tire, comprising laminating a sheet formed of the thermoplastic resin or a thermoplastic resin composition blended with a thermoplastic resin and an elastomer, and the thermoplastic resin Or a method of producing a pneumatic tire by cutting a laminate sheet of rubber vulcanized and bonded by the thermoplastic resin composition to a predetermined length, joining the ends of the laminate sheet, and then vulcanizing and molding it. After the tire starts running, cracks do not occur in the vicinity of the bonded portion of the bonded laminate sheet, and the properties and performance of the laminate sheet can be exhibited with good long-term durability. [0003] Typically, this laminate sheet is, for example, an inner liner constituting one of the important members of pneumatic tires in recent years. I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29D30/30
CPCB29C66/43B29C66/14B29C66/73921B29C66/024B29C66/71B29C66/1282B29C66/1122B29C66/0242B29C66/723B29C66/343B29D2030/423B29C66/1286B29C66/73752B29C66/0246B29L2030/00B29D30/08B29C66/1284B29C65/02B65H2801/93B29K2021/00B29K2079/08B29K2077/00B29K2067/00B29K2033/08B29K2027/12B29K2021/003B29K2009/00B29K2001/00B29K2101/12
Inventor 佐藤峻濑户秀树
Owner THE YOKOHAMA RUBBER CO LTD
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