05-08-2021 дата публикации
Номер: US20210237945A1
A paper lid that is mainly made of paper includes a top plate portion extending in a first direction, an inner fitting portion extending in a second direction and being continuous with the top plate portion, a peak portion extending in a third direction and being continuous with the inner fitting portion, an outer fitting portion extending in a fourth direction, facing the inner fitting portion at a distance, and being continuous with the peak portion, and a flange portion extending in a fifth direction, being continuous with the outer fitting portion, and including an end of the paper lid. 1. A paper lid mainly made of paper , the paper lid comprising:a top plate portion, extending in a first direction;an inner fitting portion, provided along a circumferential direction of the top plate portion, extending in a second direction, which intersects the first direction, and being continuous with the top plate portion;a peak portion, provided along a circumferential direction of the inner fitting portion, extending in a third direction, which intersects the second direction, and being continuous with the inner fitting portion;an outer fitting portion, provided along a circumferential direction of the peak portion, extending in a fourth direction, which intersects the third direction, facing the inner fitting portion at a distance, and being continuous with the peak portion; anda flange portion, provided along a circumferential direction of the outer fitting portion, extending in a fifth direction, which intersects the fourth direction, being continuous with the outer fitting portion, and including an end of the paper lid.2. The paper lid according to claim 1 , wherein the outer fitting portion has an inclined portion claim 1 , in which at least a part of the outer fitting portion is inclined toward an inner fitting portion side.3. The paper lid according to claim 1 , wherein an inner-surface side of the inner fitting portion has no wrinkles claim 1 , at least within a ...
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