Opening arrangement for packing containers

Details Opening arrangement for packing containers Opening arrangement for packing containers

1987-08-14

1989-03-28

Marcus, Stephen

Envelopes, wrappers, and paperboard boxes

Paperboard box

Including tearing or breaking means for opening a nonunitary...

220260, 220271, 22912515, B65D 570

Patent

active

048156558

ABSTRACT:
Non-returnable packages for liquid contents, e.g. milk, are made frequently from a flexible packing laminate, and are provided with an opening arrangement in the form of a tear-off strip which covers a pouring opening in the packing container wall. So as to avoid spatter and spillage at the actual moment of opening, an opening arrangement for packing containers is realized comprising a pouring opening (8) which has a projection (8') of small area directed against the direction of tearing of the tearing strip (6). This part of the pouring opening (8) formed as a projection (8') thus will be opened first, and air will flow into the packing container, and the liquid level will drop so that the continued opening can be performed without any risk of spillage. By varying the sealing strength between the tearing strip and the packing laminate an automatic delay of the removal of the tearing strip after the opening of the projecting part can be achieved, which further improves the functioning of the opening arrangement.

REFERENCES:
patent: 3292828 (1966-12-01), Stuart
patent: 3990603 (1976-11-01), Brochman
patent: 4108330 (1978-08-01), Patterson
patent: 4164303 (1979-08-01), Waterbury
patent: 4312450 (1982-01-01), Reil
patent: 4500011 (1985-02-01), Brochman
patent: 4585498 (1986-04-01), Lagerstedt et al.

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