TAPPI T 840Testing adhesives used in glued lap joints of corrugated fiberboard containers
This method describes a procedure for evaluating the adhesive used in glued lap joints of corrugated containers. This method describes a laboratory procedure for evaluating glued lap adhesive applied to a laboratory-prepared specimens made from the linerboard to be used in the manufacture of corrugated containers. A separate testing procedure for the finished container is TAPPI T813.