Method of making collapsible paperboard cup

Details Method of making collapsible paperboard cup Method of making collapsible paperboard cup

1978-01-03

1980-03-25

Coan, James F.

93 366, 93 3601, B31B 700

Patent

active

041944399

ABSTRACT:
A method of making a folded lined paperboard container having an automatic bottom which locks in a set-up position when the container is manually manipulated from a flat knock-down condition to a set-up position and having a liquid proof liner made of a plastics material is disclosed. Two lined containers are made from each lined blank by cutting the folded blank transversely of side panels between the edges of a band of adhesive extending transversely of the side panels.

REFERENCES:
patent: 2098090 (1937-11-01), Ford
patent: 2205437 (1940-06-01), Ringler
patent: 2799211 (1957-07-01), Zerlin et al.
patent: 3227054 (1966-01-01), Helms et al.
patent: 3878771 (1975-04-01), Malcolm

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