Abstract
For the purpose of adaptability to softness of nonwoven fabrics, we inspected in detail the Peirce′s method, which has been fairly succeeded in the evaluation of textiles flexibility. From this results, we knew that the Peirce′s method was sufficiently applicable to non-woven fabrics, with only the modification of his parameter contained in the Peirce′s approximate equation. And then, with this modified equation, we measured the values of flexural rigidity for the samples which were prepared with several different binders. It was proved that the differences of thickness between products resulting from the sorts of binder, influenced remarkably upon the flexural rigidity.
