Norma ISO 1974

Test Materials: ISO 1974 specifies the use of standard paper samples, typically in the form of sheets, to determine tearing resistance. The material should meet specific dimensions and moisture content criteria to ensure consistent and reliable test results.
Test Process: The tearing resistance test is performed using a standardized apparatus, such as a pendulum or a tearing tester. The paper sample is clamped, and a tear is initiated. The energy required to propagate the tear is measured and recorded in accordance with ISO 1974’s guidelines.
Test Result Interpretation: Test results are expressed in terms of the tearing resistance, quantified by the force required to tear the paper. The data is typically reported in millinewtons (mN), providing an indication of the paper’s strength and suitability for various applications. High resistance indicates strong, durable paper, while lower values suggest weaker material.