Easy-opening container packaging

Details Easy-opening container packaging Easy-opening container packaging

1990-06-27

1992-06-02

Garbe, Stephen P.

Receptacles

Closures

Removable closure retained by adhesive or fusion means

220270, 220276, 220461, B65D 4100

Patent

active

051180022

ABSTRACT:
A container packaging having a flanged container, and a cover member with which the container is tightly closed by heat sealing at the flange after being filled with a content stuff. This packaging can be easily opened to take out the content by separating the cover member with a human hand force in such a manner that as an end of the cover member is pulled upward, ply separation of a cohesion-destructive plastic layer progresses, or a portion of an outer peripheral threadlike protrusion reduced in thickness is broken and ply separation of cohesion-destructive plastic layer thereafter progresses to the position of an inner peripheral threadlike protrusion, and a portion of this protrusion reduced in thickness is broken.

REFERENCES:
patent: 3290856 (1966-12-01), Rumberger
patent: 4589568 (1986-05-01), Ito et al.
patent: 4595117 (1986-06-01), Walter
patent: 4689099 (1987-08-01), Ito et al.
patent: 4771935 (1988-09-01), Hekal
patent: 4801041 (1989-01-01), Takata et al.
patent: 4858780 (1989-08-01), Odaka et al.
patent: 4865217 (1989-09-01), Yoshimoto
patent: 4905838 (1990-03-01), Suzuki et al.
patent: 4913307 (1990-04-01), Takata et al.

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