Paper cups

Details Paper cups Paper cups

1977-11-07

1978-10-03

Moorhead, Davis T.

Envelopes, wrappers, and paperboard boxes

Paperboard box

Box material includes a coating or a nonpaperboard...

B65D 310

Patent

active

041179714

ABSTRACT:
Forming coating layers at least on the whole inner side wall and top peripheral opening edge of a paper cup with synthetic resin to be closely adhered, also forming a coating layer with synthetic resin on the inside face of a bottom paper plate closely adhered, said coating layer at the lower peripheral edge of said inner side wall and the bottom coating layer are merged to be an integral part along the whole inner face of the cup, thereby leakage of liquid contained therein by penetration from said side wall, particularly from overlapped portion of side wall and from jointed portion of the side wall and bottom plate is prevented; also in the paper cup with a lid, leakage of liquid from the top opening end is prevented.

REFERENCES:
patent: 3049277 (1962-08-01), Shappell
patent: 3137431 (1964-06-01), Crouse et al.
patent: 3164314 (1965-01-01), Waycie
patent: 3182882 (1965-05-01), Aellem et al.
patent: 4016327 (1977-04-01), Fumei et al.

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