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Summary:PROBLEM TO BE SOLVED: To provide a container formed of a synthetic resin sheet, having excellent moldability, sealable property, openable property, and stability at handling. SOLUTION: A bottomed container A formed of a synthetic resin sheet has a flange B at an outer peripheral edge of its opening. At the flange B, a sealing protrusion D is provided. A part to be connected to the outside of the sealing protrusion D of the flange B is made to be a horizontal part 1 formed of a horizontal or about horizontal plane, and a part to be connected to the outside of the horizontal part 1 is made to be a slant part 2 slanting downward. Further, a part to be connected to the outside of the slant part 2 is formed as a skirt 3 of a vertical or about vertical plane downward. The slant angle of the slant part 2 is made to be about 3-45 deg. and the thickness of the flange B is made to be 200μ or above.
Bibliography:Application Number: JP19950260995