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Method and device for forming composite tread with micro-chimney structure

A tread and chimney technology, applied in the field of tire manufacturing, can solve the problems that the tire cannot be dissipated properly, the complexity of the molding work of the splicing rod is increased, and the conductive path is broken.

Pending Publication Date: 2020-06-26
THE GOODYEAR TIRE & RUBBER CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Treads with chimney structures are usually made by extrusion, which adds to the complexity of splice bar design and molding work
However, if there are any issues / inconsistencies in extrusion, the conductive path may be broken and the tire will not be able to properly dissipate the built-up static charge

Method used

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  • Method and device for forming composite tread with micro-chimney structure
  • Method and device for forming composite tread with micro-chimney structure
  • Method and device for forming composite tread with micro-chimney structure

Examples

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Embodiment Construction

[0055]figure 1 A cross-sectional view of a cured tire tread 200 of the present invention is illustrated. The tire tread 200 is formed by winding a continuous coextruded strip 210 of raw rubber onto a tire building drum 18 or a shaped green carcass. continuous strip 210 in Figure 2A is shown in , and is a bilayer or coextruded strip of a first layer 212 and a second layer 214 of two different rubber tread compounds. The first layer 212 is formed from a first rubber compound which can be any single-cap tread compound, typically full silica and non-conductive rubber. The second layer 214 is formed from a second compound which is a conductive rubber compound. The first rubber layer 212 and the second rubber layer 214 are formed as discrete layers and thus do not mix together. The second layer 214 is preferably thinner than the first layer 212 . Figure 2A The coextruded tapes shown in have a ratio of 90% of the first compound to 10% of the second compound, while Figure 2B A...

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PUM

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Abstract

The invention relates to a method for forming a composite tread having a micro-chimney structure. The method includes the steps of providing a co-extruded strip formed from a first compound and a second compound, wherein the first compound is a tread compound and the second compound is electrically conductive; and then winding the co-extruded strip onto a tire building drum to form the tread.

Description

technical field [0001] The present invention relates generally to tire manufacturing, and more particularly to methods for forming composite treads and tires having microchimney structures. Background technique [0002] Tire manufacturers have developed more complex designs due to advances in technology and a highly competitive industrial environment. In particular, tire designers have sought to use a variety of rubber compounds in tire treads in order to meet consumer demands. The use of multiple rubber compounds per tire component results in the need to supply a large number of compounds on site for each of the manufacturer's tire lines. Additionally, modern tire tread designs require the use of conductive rubber materials in order to create a chimney structure to dissipate static charges. Treads with chimney structures are usually produced by extrusion, which adds to the complexity of splice bar design and molding work. However, if there is any issue / inconsistency in e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C48/20B29C48/30B29D30/30B29C48/49
CPCB29D30/30B29C48/20B29C48/304B29C48/49B29D30/52B29D30/60B29C48/37B29C48/301B29C48/07B29C48/25686B29D30/62B29D2030/526B29C48/21B29C48/307B29C48/022B29K2021/006B29K2105/0023B29K2995/0005B29L2030/002B29D30/3021B60C19/082B60C2011/0091
Inventor 陈红兵C.D.戴尔伦A.M.巴尔丹E.A.罗根斯基
Owner THE GOODYEAR TIRE & RUBBER CO