CELLULOSE-BASE FIBROUS MATERIAL

摘要

The invention provides a cellulose-base fibrous material for the production of high-opacity paper and sheeting which have low density and excellent surface characteristics and exhibit excellent dimensional stability in spite of their having high strength. A fibrous material made mainly of a cellulose having a scaly outer fibril made of a microfibril aggregate exhibits a higher fiber stiffness than that of a fibrous material having a yarn-type outer fibril at the same freeness level and has a lower water retention and a larger specific surface area than those of the latter material. Use of the fibrous material of the invention brings about paper and sheeting which have low density, excellent surface characteristics, excellent dimensional stability, and high opacity.