Seal closure

Details Seal closure Seal closure

1987-11-06

1988-10-25

Marcus, Stephen

Envelopes, wrappers, and paperboard boxes

Paperboard box

With closure for an access opening

220260, 220345, 22912514, 22912515, B65D 3900

Patent

active

047797932

ABSTRACT:
A sealing device arrangement is provided for a container to be filled through an opening. The base strip attaches the sealing device to the container. Sealing strip elements are mounted to the base strip and are used for sealing the container opening. Protecting strip elements are provided for activating and protecting the sealing elements prior to and during activation of the sealing strip elements from a filling position to a sealing position. Resistance strip elements are provided which create resistance between the resistance strip and the base strip when the sealing strip elements are activated, thereby reducing exposure of the sealing surface to atmosphere during activation.

REFERENCES:
patent: 2564252 (1951-08-01), Dickson, Jr.
patent: 2628761 (1953-02-01), Yancey
patent: 2847151 (1958-08-01), Meyer-Jagenberg
patent: 3040967 (1962-06-01), Klein
patent: 4557414 (1985-12-01), Ford et al.
patent: 4577777 (1986-03-01), Brochman
patent: 4632299 (1986-12-01), Holmberg

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