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Tyre cover comprising a self-adherent composite reinforcement

A technology of pneumatic tires and reinforcements, applied in the field of pneumatic tires reinforced by metal reinforcements, hybrid or composite reinforcements

Active Publication Date: 2013-06-05
OCIETE DE TECH MICHELIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, the above RFL adhesives also have disadvantages: in particular they contain formaldehyde as a base substance, which is expected to be removed from adhesive compositions in the long term due to current changes in European regulations concerning this type of product substance

Method used

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  • Tyre cover comprising a self-adherent composite reinforcement
  • Tyre cover comprising a self-adherent composite reinforcement
  • Tyre cover comprising a self-adherent composite reinforcement

Examples

Experimental program
Comparison scheme
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Embodiment

[0071] Trial 1 - Manufacture of Composite Reinforcement Body

[0072] Firstly, a composite reinforcing body suitable for the tire of the present invention is manufactured as follows. The initial reinforcing wires were steel cords for pneumatic tires, made of standard steel (with a carbon content of 0.7% by weight), presenting two separate wires with a diameter of 0.30 mm twisted together at a pitch of 10 mm or monofilament 1×2 construction. The cord diameter is 0.6 mm.

[0073] The cord is made of polyamide 11 (Rilsen BESNO P40TL from the Arkema company Rilsen BESNO P40TL; T m 180°C) and on the other hand SBS or SB (Kraton's D1155 and D1118, respectively), the extruder head is heated to a temperature of 210°C and has two dies—diameter 0.63mm upstream die and 0.92mm diameter downstream die. A thermoplastic mixture consisting of polyamide 11 (pump speed about 51 g / min) and SBS or SB (pump speed about 9 g / min) was heated to a temperature of 210° C. Silk wire (preheated to ...

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Abstract

The invention relates to a tyre cover comprising a self-adherent composite reinforcement (R-2) which adheres to a diene rubber matrix by curing, comprising: one or more reinforcing filaments (20), for example a carbon steel cord; covering said filament, each filament individually or several filaments collectively, a layer of a thermoplastic polymer composition comprising, on the one hand, a thermoplastic polymer having a positive glass transition temperature and, on the other hand, an unsaturated styrene thermoplastic elastomer having a negative glass transition temperature.

Description

technical field [0001] The field of the invention is that of reinforcing elements or reinforcements, especially metallic reinforcements, for pneumatic tires. [0002] The present invention more particularly relates to pneumatic tires reinforced with hybrid or composite reinforcements consisting of at least one core, in particular a metal core, consisting of a layer of thermoplastic material or a thermoplastic A cover or sheath of a material. Background technique [0003] The use of thermoplastic materials, such as polyamide or polyester, as sheaths for metal reinforcements has been known for a considerable time, in particular to protect these reinforcements from various types of external attack, such as oxidation or abrasion, or For the purpose of structural rigidity, by joining together various types of threads or assemblies of threads, such as cords, and thus in particular increasing their resistance to buckling. [0004] Such composite reinforcers and their use in rubbe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B15/08B29D30/38
CPCB29D30/38C08K3/08B29B15/08B29D2030/383Y10T428/294B29B15/122
Inventor V·阿巴德S·里戈E·库斯托代罗
Owner OCIETE DE TECH MICHELIN