TAPPI T 840 om-10 provides a laboratory procedure for evaluating adhesives used in glued lap joints of corrugated fiberboard containers. The method covers specimen preparation and qualitative assessment of adhesive performance under heat, water, and cold resistance conditions, including delamination and estimated fiber tear observations. It also outlines required apparatus, sampling guidance, testing procedures, reporting requirements, and applicable TAPPI conditioning practices.
Application Scope: Suitable for adhesive evaluation, quality control, and laboratory testing related to corrugated fiberboard containers, shipping containers, corrugated boxes, and glued lap joints.