Vehicle pneumatic tires with cap/base tread

A technology for pneumatic vehicles and pneumatic vehicles, applied in the direction of tire tread/tread pattern, special tires, tire parts, etc., which can solve problems such as wear, affecting wet adhesion, dry adhesion, and changing properties of cured mixtures , to achieve the effect of improving thermal conductivity, improving thermal conductivity and good tear resistance

Inactive Publication Date: 2008-10-01
CONTINENTAL AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the addition of graphite specifically to rubber compounds for tread rubber has the consequence that the properties of the cured compound cha...

Method used

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  • Vehicle pneumatic tires with cap/base tread
  • Vehicle pneumatic tires with cap/base tread

Examples

Experimental program
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Embodiment Construction

[0018] The figure shows a section through one of the upper sidewall regions of a tire for commercial vehicles and in the region of the tread rubber adjacent thereto. The conventional tire components illustrated have a standard construction, for example, a frame insert 2 specially equipped with steel cords as reinforcing elements, an airtight inner layer 1, a breaker belt assembly comprising four plies 3, 4, 5 and 6, and side wall 10. Shoulder pads 11 are fitted between the cushioning strap assembly, frame insert 2 and side walls 10 . The tread rubber comprises a tread rubber cap 9 and a tread rubber base 8; the edges of the breaker plies 4, 5 and 6 are covered by a layer of undertread rubber 7 (Fig. 1) or 7' (Fig. 2). The tire components not shown, such as the bead regions, can be constructed in known manner.

[0019] In the case of the illustrated embodiment, this fourth, radially outermost breaker ply 6 has the smallest width of all the plies and is the so-called protectiv...

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PUM

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Abstract

The invention relates to a vehicle tire, especially utility vehicle tire, comprising a tread which has a tread cap (9) and a tread base (8), both produced from a rubber mixture, and a multilayer ply structure (3, 4, 5, 6) with at least one undertread strip (7, 7') covering the ply edges and separating the same from the tread base, said undertread strip being likewise produced from a rubber mixture. The aim of the invention is to reduce temperature and heat build-up in the area of the ply edges. For this purpose, the tread base (8) has a heat conductivity that is by at least 20 % higher than that of the tread cap (9) and a heat conductivity that is by at least 10 % higher than that of the one or more undertread strips (7, 7'), and the tread base (8) contains at least 25 phr of acetylene black.

Description

technical field [0001] The present invention relates to a pneumatic vehicle tire, in particular a tire for commercial vehicles, having a tread rubber with a tread rubber cap and a tread rubber base, which in each case Produced from a rubber compound and having at least one ply breaker belt assembly having at least one layer of undertread rubber produced from the rubber compound covering breaker edges and separating them from the tread rubber base. Background technique [0002] During the use or operation of the tyre, the flexural and centrifugal forces occurring and the associated dynamic deformations due to the loss of hysteresis of the cured rubber compound in the tyre, lead to the formation of thermal energy which can only be dissipated poorly. Accompanying the increase in temperature, a unique heat formation occurs especially near the edge of the buffer layer. This results in compromising the durability of the tire as well as the feasibility of retreading. Due to the i...

Claims

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Application Information

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IPC IPC(8): B60C1/00
CPCB60C1/0016B60C11/005
Inventor 延斯·克勒夫曼马蒂亚斯·豪费克里斯蒂安-托拉夫·韦伯
Owner CONTINENTAL AG
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