Studies on the Manufacture of the Polyvinyl Alcohol Fiber Paper

Abstract

The present investigation has aimed at establishing the paper making technique using a synthetic fiber, which has many superior characteristics.
Vinylon fiber has been developed in Japan. This fiber has similar properties to cellulose fiber, since it has many OH groups in its molecule. Present work was carried out in regard to the relation between the characteristics of constructed fiber and physical properties of the paper.
When a mixture of the vinylon fiber and pulp was beated and manufactured to paper, the short-cut vinylon fiber showed better properties than the long one, and the tow fiber better than the culed one. The increasing in the blending ratio of the vinylon fiber to pulp had a tendency to make strong the tearing strength and to weaken the tensile strength.
In an effort to determine the effect of fineness of fiber on the physical properties of the paper, various polyvinyl alcohol fibers (PVA fibers) were used as binding fibers.
It is observed that the more is the fineness of either of the basic or binding fiber used, the greater is the strength of the paper obtained. The strength of the paper is more affected by the fineness of binding fiber than basic fiber.
Authors advocated the paper making process in which the web is previously formed using non-formalized vinylon fibers and the web is formalized subsequently
Experiments showed that the paper made by this procedure had a larger wet strength. And other various physical properties were discussed in relation to the degree of formalization.
It is found that vinylon fiber which is spinned with starch is divided into fibril by beating and is capable of making paper as well as natural cellulose fiber. This fiber is named “readily fibrillable vinylon”.