Packaging container provided with an indication for opening

Details Packaging container provided with an indication for opening Packaging container provided with an indication for opening

1992-02-12

1992-10-20

Elkins, Gary E.

Envelopes, wrappers, and paperboard boxes

Paperboard box

Having means to facilitate opening the box by severing box...

229 35R, 229242, B65D 554

Patent

active

051563304

ABSTRACT:
Packaging container of a material containing a skeletal layer of plastic and filler mixed into the plastic in a quality of between 50 and 80% of the total weight of the skeletal layer. In order to facilitate the opening of the container the container is provided with a tearing mark incorporated in the packaging material, along which the material in the container must be torn to expose a container opening through which the contents of the container are made accessible. The tearing mark consists of an unbroken recess in the skeletal layer or a similar linear recess weakening the material with a depth of penetration of approximately 10-30% of the total thickness of the skeletal layer.

REFERENCES:
patent: 3577484 (1971-05-01), Jacobson
patent: 3797726 (1974-03-01), Reil
patent: 4301927 (1981-11-01), Carlsson et al.
patent: 4343402 (1982-08-01), Holmstrom
patent: 4445309 (1984-05-01), Reil
patent: 4464156 (1984-08-01), Holmstrom
patent: 4691858 (1987-09-01), Peer, Jr.
patent: 4703876 (1987-11-01), Reil
patent: 4740163 (1988-04-01), Kuchenbecker
patent: 4811849 (1989-03-01), Rausing
patent: 4865203 (1989-09-01), Ueda
patent: 4915236 (1990-04-01), Kamin et al.

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