Paper and board — Determination of bending resistance — Part 1: Constant rate of deflection
纸和纸板——抗弯强度的测定第1部分:恒挠度率
发布日期:
2010-11-04
ISO 2493-1:2010规定了基于两点加载原理测定纸和纸板抗弯性的程序。
ISO 2493-1:2010适用于20 mN至10000 mN范围内抗弯性的测量。它不适用于瓦楞纸板,但可适用于瓦楞纸板的组件。
弯曲角度为15°,弯曲长度为50 mm。
对于弯曲电阻太低而无法用50 mm的弯曲长度测量的样品,可以使用较短的弯曲长度,即10 mm。
对于弯曲15°后容易永久变形的板材,可以使用半弯曲角,即7,5°。
ISO 2493-1:2010 specifies procedures, based on the two-point loading principle, for determining the bending resistance of paper and board.
ISO 2493-1:2010 applies to the measurement of the bending resistance within the range 20 mN to 10 000 mN. It is not applicable to corrugated board but can be applicable to the components of such board.
The bending angle is 15° and the bending length is 50 mm.
For samples having a bending resistance that is too low to measure with a bending length of 50 mm, a shorter bending length, i.e. 10 mm, can be used.
For boards that tend to be permanently deformed if bent through 15°, the half bending angle, i.e. 7,5°, can be used.