| 摘要 |
PROBLEM TO BE SOLVED: To manufacture efficiently a wood meal containing polyolefin resin plate of comparatively thick-walled having a flat surface without generating heat or the like. SOLUTION: A polyolefin resin composition containing wood meal is melt kneaded by an extruder in a device, and a resin plate is molded by an extruder through a molding 16. In that case, an introduction opening 32 communicating with a discharge outlet of the extruder and a plate molding chamber 40 communicating with the introduction opening 32 and having the crosssectional area of 1.5-25 times the crosssectional area of the introduction opening 32 are formed on a flow path 22 of the molding die 16, and the polyolefin resin composition is extruded by passing the composition through the introduction opening 32 and the plate molding chamber 40 successively. |
