PAPER-MADE CONTAINER WITH LID

摘要

PROBLEM TO BE SOLVED: To prevent an inter-layer peeling-off state and perform a positive peeling between a flange and a lid member. SOLUTION: This container is constructed such that a seal opening protrusion 2 having a lid member C not fixed thereto is protruded outwardly from an outer circumferential edge C1 of a flange 1 and cooperatively arranged at a seal opening corner 1a of the flange 1. With such an arrangement as above, a fixed section D between the flange 1 and the outer circumferential edge C1 of the lid member C is moved away from an end edge of the seal opening protrusion 2. A pulling-up force of the seal opening end C2 of the lid member C may act against only the fixed section D and is not applied up to the end edge of the seal opening protrusion 2.