Study on the Evaluation Method of Adhesive Properties for Shoe Materials

Abstract

In order to establish the appropriate evaluation method of adhesive properties for shoe sole materials such as rubber and foamed resin, relationship between stress components of the adhesive interface and adhesive strength was precisely investigated. Two types of specimens, T-shaped (TS) and single lap (SL), were tested for considering the difference of stress components. Adhesive strength of SL was much higher than that of TS. It was indicated that adhesive interface has excellent resistance to shear stress direction as contrasted with tensile stress direction. From the results of numerical analyses, by SL specimen, it was found that stress components depended on the deformation of adherend. Contribution of shear stress was proportional to the stiffness of adherend. Judging from the above, it was confirmed that the evaluation of adhesive properties for shoe sole materials should be performed by applying of tensile stress at adhesive interface.