Paper container for hot liquids and method and apparatus for mak

Details Paper container for hot liquids and method and apparatus for mak Paper container for hot liquids and method and apparatus for mak

1984-05-22

1985-12-24

Moy, Joseph Man-Fu

Envelopes, wrappers, and paperboard boxes

Paperboard box

End structure

229 57, 220 66, B65D 310

Patent

active

045600635

ABSTRACT:
A paper container has a bottom in which there is impressed a deformation groove to allow the bottom to deform in response to reduced internal pressures occurring as a hot liquid cools inside of the closed container. The bottom is formed in a continuous one-step process in which a series of coaxially arranged, telescoping tools travel relative to one another along a common axis to form the bottom with the deformation groove and a bent outer edge.

REFERENCES:
patent: 2190990 (1940-02-01), Link
patent: 4008846 (1977-02-01), Gordon
patent: 4098404 (1978-07-01), Markert
patent: 4120419 (1978-10-01), Saunders
patent: 4147271 (1979-04-01), Yamaguchi
patent: 4266685 (1981-05-01), Lee, Jr.
patent: 4341321 (1982-07-01), Gombas
patent: 4431112 (1984-02-01), Yamaguchi

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