Mold for in-mold decoration

A mold for in-mold decoration, comprising:

• a stationary-side mold;
• and a movable-side mold, at least one of the molds having:
• a cavity-forming block including a molding-use cavity;
• and a dieset for mounting the cavity-forming block, in which a decorating film is disposed in between both the molds in a state that a design pattern of the decorating film is positioned at the cavity, and molten resin is injected to the cavity so as to mold a molded article, wherein
• the dieset for mounting the cavity-forming block comprises:
• a mounting face which are positioned on a face opposed to the other mold so as to overlap with a passing region of the decorating film and which are formed smoothly;
• and a mold clamping force-receiving potion provided outside the passing region of the decorating film and the mounting face in a way almost symmetrical with respect to a center line of the one mold along a passing direction of the decorating film, and
• either one of the dieset and the cavity-forming block has an engagement protruding portion while the other has an engagement recess portion which engages with the engagement protruding portion, the engagement protruding portion is engaged with the engagement recess portion so that the cavity-forming block is positioned at the mounting face of the dieset and the cavity-forming block is mounted on the dieset.