Shear strength of an adhesively bonded paper-metal interface

This paper describes a test method to determine the interfacial shear strength of a paper-metal interface. The interfacial shear strength is a critical property ,controlling the performance of the creping process in the manufacture of light-weight paper structures. Commonly used synthetic creping adhesive types, namely polyvinyl alcohol (PVA), polyamidoamine epichlorohydrin, and a cationic polyacrylamide, were studied using a test fixture developed in this work. The effect of adhesive type, paper sample basis weight, and adhesive concentration are reported. Results show that the maximum interfacial shear strength is most sensitive to adhesive concentration and basis weight of the sheet. Surprisingly, adhesive type was less important, especially for the low-basis-weight case.