| 摘要 |
PROBLEM TO BE SOLVED: To obtain a good appearance with a high surface glossiness by a method in which the surface of a resin sheet confronting the molding surface of a mold is coated with a rustproof lubricating agent in an amount sufficient to fill up the recessed parts of a microscopically uneven surface of the resin sheet in advance by immersion, brushing, or spraying. SOLUTION: Before a resin sheet S is inserted between both opened molds, the surface confronting the mold (a mold cavity surface) of the resin sheet S or the surface of the resin sheet is coated with a rustproof lubricating agent by immersion, brushing, or spraying; however, both may be coated. During injection, the rustproof lubricating agent applied in advance of mold closing on the surface confronting a mold cavity 5 surface of the resin sheet S is present between the mold cavity 5 surface and the resin sheet surface, is deformed with the mold closing operation, and does a lubricating action to the resin sheet surface sliding on the mold cavity surface, encloses the recessed parts in the microscopic unevenness of the mold cavity 5 surface, and forms a king of smooth surface. |
