Apparatus and process for making tape useful as a tire cap ply

B - Operations – Transporting – 29 – D

Patent

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Details

B29D 30/38 (2006.01) B29B 15/14 (2006.01)

Patent

CA 2536777

An apparatus and process are used to make tape which can be used as cap plies, breakers and reinforcement in the carcass of tires. The tape is made by dipping a plurality of single end cords in a solvent-based cement. The cords are converged before entering the dip pan so that they are fixed in a single plane when they are dipped. The cement, which comprises solvent and an elastomeric composition, is dried so that the majority of the solvent evaporates. The elastomeric composition remains, encapsulating the cords, thereby forming the tape.

L'invention concerne un appareil et un procédé utilisés pour produire une bande pouvant être utilisée sous la forme de nappes de sommet, de nappes amortisseuses et de renforts dans la carcasse de pneus. La bande est produite par immersion d'une pluralité de câblés à extrémité simple dans une dissolution à base de solvant. Les câblés sont disposés convergents avant de pénétrer dans le contenant d'immersion de manière qu'ils sont fixés dans un seul plan lorsqu'ils sont immergés. La dissolution, laquelle contient un solvant et une composition élastomère, est séchée, de manière que la majorité du solvant s'évapore. La composition élastomère reste, encapsulant les câblés, formant ainsi la bande.

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