Concave shaped container bottom end closure and method of formin

Details Concave shaped container bottom end closure and method of formin Concave shaped container bottom end closure and method of formin

1991-10-28

1992-10-06

Terrell, William E.

Manufacturing container or tube from paper; or other manufacturi

Container making

Rigid container

493160, B31B 325, B31B 326

Patent

active

051527367

ABSTRACT:
A bottom end closure for a liquid-carrying paperboard container, wherein particular diagonal and sloped score lines are formed on the inner closure panels by modified sealing jaws, such that, upon being engaged by the sealing jaws, the score lines enhance the formation of a concave shape to the bottom end closure. The result is that the filled container will sit flat and stand erect, without any interfering downward bulging.

REFERENCES:
patent: 3303761 (1967-02-01), Monroe et al.
patent: 4669253 (1987-06-01), Shavit
patent: 4795086 (1989-01-01), Farber
patent: 4838747 (1989-06-01), Kume et al.

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