| 摘要 |
PURPOSE:To improve the strength of an adhesive agent by previously roughening the bottom side surface of a molding with many scratches. CONSTITUTION:The bottom 2 side surface of a molding 1 is roughened with many scratches so that minute ruggednesses 5 are provided on the bottom 2 side surface, through which adhesive strength of a liquid adhesive agent applied on the bottom side surface of molding 1 can be improved. Namely, as a part of an adhesive agent to be applied to the bottom 2 side surface of the molding 1 intrudes into the ruggednesses 5 through provision of 5 on the bottom 2 side surface of the molding 1, a part of the adhesive agent adheres to the molding 1 automatically and then the adhesive strength of the adhesive agent 4 to the molding 1 is improved due to an increase of an adherent area of the bottom 2 side surface of the molding 1. |
