| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a paper container having microwave oven suitability, which can be retort-pasteurized. SOLUTION: This paper container is constituted of a cup-shaped container main body equipped with an opening, a body part 12 and a bottom part 13 comprising a laminated sheet of which the major component is a paper layer, and wherein the mouth edge 17 of the opening is out-curled, and the upper layer and the lower layer of the mouth edge part 17 are heat-welded with each other by a pressurization, and a tape-form laminated film 20 to cover both end edge parts on the internal and external sides, which are generated at an affixed part of the body part of the container main body, and on the bottom part in-curled internal wall part of such a paper container, a bottom part in- curled annular member 34 which is located along the internal wall part and is heat-welded, is provided by an injection-molding method of a thermally molten polypropylene resin.</p> |
