Channel opening feature for cartons

Details Channel opening feature for cartons Channel opening feature for cartons

1985-04-19

1988-04-26

Schmidt, Frederick R.

Manufacturing container or tube from paper; or other manufacturi

Container making

Rigid container

493 60, 493 82, 493356, 493370, 493963, 206612, 220266, 225 2, B31B 125, B31B 314

Patent

active

047401630

ABSTRACT:
A container is constructed from a paperboard sheet having a channel including a surface area of the paperboard sheet from which paperboard material has been removed and a tear strip at least partially bounded by the channel for opening the container by separation of the paperboard sheet along the channel.

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patent: 4135438 (1979-01-01), Sugioka
patent: 4160894 (1979-07-01), Stemmler et al.
patent: 4327833 (1982-05-01), Kuchenbecker
patent: 4362245 (1982-12-01), Kuchenbecker

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