| 摘要 |
PURPOSE:To form the whole of a wooden series molded body after hot pressing molding so as to have uniform density by brining the density of a base material to a constant state by preventing the scattering of the base material in all directions generated upon the reception of wind pressure due to the approach of upper and lower molds or vortex streams generated in a molding space, by forming an air vent hole to the inner surface of a holding plate surrounding the molding space formed by upper and lower molds from the side part direction. CONSTITUTION:A holding plate 25 is provided to the outer peripheral side of a lower mold 21 and the inner wall surface 26 of the holding plate 25 is formed as an inclined surface 27 opened so as to widen toward the upper part side of the holding plate 25. When an upper mold 22 is fallen, a base material aggregate B2 is ready to fly up or generate positional shift by vortex streams whirled upwardly in the upper part side within a molding space C but, because the inner wall surface 26 of the holding plate 25 is formed into the inclined surface 27 so as to be widely opened toward the upper part side, pressing air in the molding space C is exhausted out of the molds from the air vent part G being the gap formed by the angle theta of the inclined surface. The upper end edge of the lower mold 21 in the outer peripheral side thereof can perform molding without collapsing the peripheral edge shape of a molded body M by the vertical part contacted with the lower end edge of the upper mold 22.
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