| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method of a patterned blow-molded product which is hardly exfoliated, imparted with a clear color pattern (including letters or the like) together with a three-dimensional irregular pattern, and rich in amusement, and the patterned blow-molded product obtained by the manufacturing method.SOLUTION: A patterned blow-molded product has an inner layer 1 composed of a colored resin and an outer layer 2 composed of a transparent resin, an irregular pattern P is imparted to the surface of the outer layer 2, only the surface of the inner layer 1 corresponding to a salient constituting the irregular pattern P is changed in color by laser light which is radiated toward the inner layer 1 from the outside of the salient of the outer layer 1, and a color-changed portion can visually be confirmed as a color pattern Q through the outer layer 1. |
