| 摘要 |
A filler comprising cellulose or lignocellulose fibrils on which light- scattering ,material particles have been deposited, and a process for the manufacture thereof. In the filler according to the invention, an alkyl derivative of cellulose, such as CMC, has been sorbed to the fibrils. Such a filler can be prepared from a source material containing cellulose or lignocellulose fibrils by first forming a fibril suspension, into which ther e are fed source materials forming an inorganic or organic salt that, when precipitating, forms a light-scattering pigment. The filler according to the invention has very good strength properties; in particular, good bond streng th is achieved by means of it. The concentration of mineral pigment in paper ca n be increased and furthermore, the grammage of paper can be lowered without t he other important properties of the paper deteriorating. |
