| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an extrusion molding device capable of producing a molding with sufficiently high dimension accuracy, and to provide a method of producing the molding. <P>SOLUTION: The extrusion molding device includes: a channel for conveying a pasty starting material composition, the cross section of the channel being substantially circular; screws for mixing the starting material composition and conveying the same downstream, the screws being provided upstream from the channel; a die from which a molding formed from the starting material composition is extruded, the die being provided downstream from the channel; a resistance tube for connecting the channel and the die; and a flow volume adjustment plate provided with a plurality of openings that pass therethrough in the thickness direction, the plate being provided between the screws and the die. The ratio L/D of the distance L between the flow volume adjustment plate and the die to the diameter D of the channel is ≥0.5 to ≤5, and the flow volume adjustment plate makes the flow velocity distribution of the starting material composition uniform before the starting material composition enters the die. <P>COPYRIGHT: (C)2012,JPO&INPIT |
