| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of molding a composite fiber body having mild gradient in change of density of a high density layer and a low density layer in the thickness direction, and effective as a sound absorbing interior material. SOLUTION: Only the lower face side of a molding material 1A is compressed and molded as the high density layer 1a of a desired thickness under temperature control of a lower mold 2B, in a process of heating and pressurizing by a primary mold 2. The primary mold 2 is opened to restore the low density layer 1b on the upper surface of the molding material 1A, and in a state that hot air is sent to the molding material 1A and it is heated to a prescribed temperature, the molding material 1A is cold-pressed by a secondary mold 3, to thereby compress and mold the low density layer 1b to a prescribed thickness and density. Thus, the composite fiber body 1 is formed having mild gradient in the change of density of the high density layer 1a and low density layer 1b, and effective as the sound absorbing interior material. COPYRIGHT: (C)2011,JPO&INPIT |
