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TAPPI T 839
TAPPI T 839
TAPPI T839 is a standard TAPPI test procedure that measures the edgewise (short column) compressive strength of corrugated fiberboard. The test is for the maximum compression that a specimen of corrugated board will withstand when pressure is applied along the edge of the board, and the board is being held in a special clamp fixture. This technique minimizes alignment problems with specimens and provides uniform test results. TAPPI T839 is also used throughout the packaging industry for a test to assess a corrugated material's structural performance for shipping cartons and transport packaging. Presto Stantest provides state-of-the-art test solutions for manufacturers who need to test corrugated board strength per TAPPI T839 requirements.
Significance
Edgewise compressive strength is an important test used to assess the stacking performance and durability of corrugated packaging. Obviously, weak corrugated boards can flex and crush under the warehouse stack loads, causing product damage and higher distribution costs. TAPPI T839 assists manufacturers in assessing the load-bearing properties of corrugated fiberboard and compares these properties for various manufactured grades of fiberboard. They serve to support quality control, packaging development, material selection, and production monitoring activities. Periodic testing is also a great project management tool for industries to uncover packaging material vulnerabilities before they're in the supply chain. Scope TAPPI T839 refers to a determination of the edgewise compressive strength of corrugated fiberboard by clamping method. The standard specifies procedures for specimen preparation, conditioning, fixture use, and compression testing under controlled laboratory conditions. It is applicable to various corrugated board constructions used in packaging applications. The method provides a repeatable and standardized approach for evaluating board strength and comparing packaging material performance.