Physical testing / Stiffness
- No.2048-D
- [JIS]P-8125-2000
- [TAPPI]T489os-99
- [ISO]2493
Stiffness is one of important parameters for assessing the appropriateness of material for processing and printing. There are nearly proportional relationships between stiffness and beating degree, basis weight, thickness and water content. The correlation is remarkable especially with thickness. As with the No.2048-M, one end of the specimen (paper, paperboard, plastic sheet, metal foil, etc.) is held, and around the held point, the specimen is turned slowly, thereby being given flexural loads. The loading point (rotation angle) is read by a sensor when the deflection angle is 15 degrees, to calculate and output stiffness.