Paper and board - Determination of tensile properties - Part 2: Constant rate of elongation method

This technical specification outlines the methodology for determining tensile properties of paper and board materials using the constant elongation rate test. The procedure is designed to measure the breaking force and elongation at break when a specimen is stretched at a fixed speed. It establishes precise requirements for the preparation of test specimens, the calibration of testing equipment, and the calculation of results to ensure consistency across different laboratories and regions. The standard defines specific parameters such as the initial gauge length, the rate of extension, and the conditions under which measurements are taken. By adhering to this framework, manufacturers and quality control departments can generate reliable data regarding the mechanical strength and extensibility of fibrous materials. This approach facilitates fair comparison between different grades of paper and board, supporting product development and quality assurance processes in the paper industry. The document serves as a foundational reference for establishing performance benchmarks without referencing specific commercial applications or regional regulatory bodies.