TAPPI T 541 om-10 describes a standardized procedure for measuring the internal bond strength of paperboard and selected papers by applying a normal separation force perpendicular to the specimen surface. The method covers equipment requirements, double-sided pressure-sensitive tape, calibration, sampling, specimen preparation, conditioning, testing, reporting, and precision evaluation.
Results support assessments of paperboard performance in applications such as carton side-seam gluing, scoring, delamination risk, and high-tack coating use. The document also identifies limitations, including the need to interpret results for the intended end use and the lack of correlation with TAPPI T 569 Scott-type internal bond measurements.
Application Scope: Quality control, laboratory testing, research, and process evaluation for paperboard, linerboard, cover materials, coated fine papers, and related paper products.
