手動式つかみ具およびタブを使用したコピー用紙の引張特性の簡便な評価

Uniaxial-tension tests were conducted on copy paper to measure the tensile properties, including Young's modulus, the proportional limit stress, and the tensile strength. Tab-free specimens and specimens with paperboard and emery cloth tabs were prepared. A tensile load was applied using manual grips, including a roller-flat surface grips, wedge grips, and vise grips. The effects of the end-tabs and grips on the measurement of the tensile properties were examined. To obtain the tensile properties of paper, the use of specimens with emery cloth tabs and vise grips is recommended because the failure at the grip and slippage between the specimen and grip can be effectively reduced without using any pressure-adjustable grip, the use of which is determined in several major standards.