| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for making a monolithic molding with a skin by which it is possible to stably manufacture a monolithic molding with a skin of uniform and high quality and without a flaw such as the flattened nap of a skin material, at a low manufacturing cost. SOLUTION: A skin material S with a nap raised layer formed on the surface is interposed between a pair of opposed right/left molds or a pair of opposed upper/lower molds and these molds are clamped. Further, a molten resin serving as a core material Q is injected fully into a cavity space 5 formed with the skin material S and both molds 3, 4 and the skin material S and the core material Q are monolithically formed. In this method for manufacturing a molded product with a skin, the raised nap layer of the skin material S is of such a selected material that a melting point is higher than that of the core material Q and a glass transition point is lower than the melting point of the core material Q. After the core material resin Q is cooled and hardened following the injection and filling of the core material resin, a loading force to be brought to bear upon the raised layer of the skin material is removed at a point of time when the temperature of the core material resin Q in the mold cavity 5 reaches the temperature level set previously in a rubber-like elastic temperature area between the glass transition point and the melting point of the raised layer of the skin material. At the same time, a gap is provided between the skin material S and the mold cavity 5 in accordance with the thickness of the raised layer of the skin material, and is retained for a specified set time. |
