| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To manufacture a container equipped with a favorable sealability and unsealability without making heat-sealing conditions difficult due to an uneven step by drawing wrinkles occurring on a flange part when a lid material is sealed to the upper surface of the flange part when the draw-formed paper container for acquiring a sealing structure is manufactured. <P>SOLUTION: Creases 2 are formed on a blank sheet 1 made of a laminated sheet material for which a thermoplastic resin layer is laminated at least on one surface of a paper base material, and the draw-formed paper container having the sealable flange part 3 is manufactured by this manufacturing method for the draw-formed paper container. In the manufacturing method, the paper container A having the flange part 3 equipped with a sealing surface on the upper surface is formed by draw-forming the blank sheet 1 on which the creases are formed. Then, a tunnel shape pore 11 in a wrinkle part 10 of the sealing surface of the flange part 3, which occurs when the blank sheet 1 is folded by the crease 2, is flatly collapsed by performing hot pressing or press molding. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p> |
