PAPER TRAY AND PRODUCTION METHOD THEREOF

摘要

PROBLEM TO BE SOLVED: To obtain a paper tray whose phape of a fitting part provided in a flange or a tip thereof is stable and superior in moldeing accuracy and a production method thereof. SOLUTION: A production method of a paper tray is that a paper tray which is laminated a thermoplastic sheet 20 having a fitting part in an inner surface of a paper box with a flange and a thickness of a fitting part 21 of the thermoplastic sheet is 200∼400μm, and a thickness of a containment part is 10∼100μm and a paper box 10a with a flange are installed in a molding die having a recessed part approximately the same as a shape of the paper box 10a. Then, the thermoplastic sheet having a fitting part in a periphery one size larger than the upper surface of the paper box is mounted on an upper surface of the paper box 10a. The flange of the paper box 10a and an inner side of the fitting part 21 of the thermoplastic sheet 20 are put in layers and thermally bonded and thermoplastic sheet 20 is heated from an upper and bonded to an inner surface of the paper box 10a by a vacuum forming method or a pressure forming method.