| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a cellulose fiber-containing thermoplastic resin composition capable of obtaining the one containing a fibrillated cellulose fiber. SOLUTION: The method for producing a cellulose fiber-containing thermoplastic resin composition comprises: a process where, when a cellulose fiber assembly is fed to a mixer having a rotary blade as a stirring means, and the cellulose fiber assembly is fibrillated by a high-speed stirring, as the cellulose fiber assembly, a bar-shaped pulp sheet is used, and the bar-shaped pulp sheet and the blade of the mixer are brought into contact in such a manner that the angle between the pulp sheet and the blade is controlled to the range of 45 to 90°and are fibrillated; a process where a thermoplastic resin is fed to the mixer, the mixture is stirred, and the thermoplastic resin is melted by generated frictional heat, so as to obtain a mixture in which the thermoplastic resin is attached to the fibrillated cellulose fiber; and a process where the mixture is stirred at a low speed while being cooled. COPYRIGHT: (C)2009,JPO&INPIT |
