| CPC B65D 43/0212 (2013.01) [B65D 43/06 (2013.01); B65D 2543/00314 (2013.01); B65D 2543/00351 (2013.01); B65D 2543/00638 (2013.01)] | 6 Claims |
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1. A paper-plastic molded cup cover and a related cup body, the cup body comprising a rolled engagement sheet on an upper edge of the cup body, the rolled engagement sheet having a circular cross-section; wherein the paper-plastic molded cup cover comprises:
an annularly closed face formed on a center thereof,
a surrounding rib extending downward from an outer wall of the annularly closed face,
a shoulder horizontally extending outward from a distal end of the surrounding rib,
a peripheral fringe extending downward from an outer side of a curved edge of the shoulder,
wherein a C-shaped ring accommodating recess is defined between an inner side of the curved edge of the shoulder and an inner side of the peripheral fringe, and two arcuately convex fringes are formed on two ends of the C-shaped ring accommodating recess, for engaging the rolled engagement sheet of the cup cover with the cup body, an entire inner surface of the C-shaped ring accommodating surface contacting the rolled engagement sheet, the inner surface extending from one of the two arcuately convex fringes to the other of the two arcuately convex fringes.
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