Influence of Surface Condition, Duration of Molding, Pressure and Temperature upon Bond Strength between Components of Tire Casings
Abstract As a result of the above experiments it is shown that the bond strength between components of casings where 100% synthetic rubber is used, may be significantly increased: 1) by maintaining the freshness of the surfaces being plied up by keeping standing to a minimum, by freshening the surfaces by fine (‘velvet’) buffing, and by applying a thin and uniform layer of bonding agent to the previously heated surfaces; 2) by increasing the specific molding pressure during plying up; 3) by increasing the specific pressure upon the constructions during vulcanization; 4) by increasing the duration of action of the specific molding pressure during plying up; 5) by raising the temperature of the components being plied up. The rational exploitation of these points undoubtedly has an important effect and will ensure the improvement of the quality of the finished articles, particularly where 100% synthetic rubber is used.