| 摘要 |
PROBLEM TO BE SOLVED: To enhance the transport efficiency of a laminated fiberboard by reducing the weight and volume of a preformed object while ensuring the definite mechanical strength of the fiberboard in manufacturing the fiberboard composed of a natural fiber and a binder resin while preventing see-through or cutting at molding. SOLUTION: The manufacturing method of the laminated fiberboard has the preforming process for preforming a laminated sheet 30 by holding a nonwoven fabric 20, which comprises fibers of which the diameter is finer than that of the fibers of a fiber mat 10 comprising natural fibers, between the fiber mats 10 to laminate the same to them by needle punching and the molding process for applying the binder resin to the laminated sheet 30 obtained in the preforming process for heating and pressing it. COPYRIGHT: (C)2009,JPO&INPIT |
