抄録
Some physical properties of non-wovens which are manufactured by the methods of dip-squeeze, dip-suction and only spraying have been studied.
In previous report, a new experimenai formula concerning the breaking stress of non-wovens in the small range of binder contents has been proposed. The present, deals with the generalization of the formula which could be applied also to the breaking stress of non-wovens in the wide range, of binder contents.
The generalized formula is as follows;-
In which 3/8. λa bn corresponds with the so-called Michie's O-span strength of non-wovens and e_??_ repressents a factor depending on the content and the adhesive force of binders.
Generally speaking, the tensile stregth of products based on the dip-squeeze and dip-suction methods is 2-time greater than that of spray method products. On the other hand, the elongation could not be distinguished between these three kinds of products.
The shape of the stress-strain curve of non-wovens dose not depend on their manufacturing methods, but it is chiefly determined by the degree of slackness in the fiber network of webs and is essentially equal to the shape of the stress-strain cuve of fiber itself.
