Package having inseparable seals and a modified ply-separation o

Details Package having inseparable seals and a modified ply-separation o Package having inseparable seals and a modified ply-separation o

1989-04-17

1989-11-21

Foster, Jimmy G.

Special receptacle or package

With pallet feature

Knockdown or collapsible type

206632, 428 354, B65D 1700

Patent

active

048816493

ABSTRACT:
The invention discloses a multiple layer packaging film, packages made therefrom and a method of opening the packages. The invention provides inseparable seal strength and in some cases hermetic seals, in combination with peelable ply separation opening for access to the contents of the package, while at the same time providing excellent barriers to transmission of oxygen and moisture. Certain embodiments provide for improved abuse resistance, excellent graphics, and other improvements. The method of opening the package depends on separating opposing ones of the package sidewalls, forcing the opening tear to be propagated partially through the film to a peelable layer interface, with subsequent ply separation along the interface to effect completion of opening of the package.

REFERENCES:
patent: 3335939 (1967-08-01), Robinson, Jr.
patent: 3552638 (1971-01-01), Quackenbush
patent: 3608709 (1971-09-01), Pike
patent: 3655503 (1972-04-01), Stanley et al.
patent: 3910410 (1975-10-01), Shaw
patent: 3988499 (1976-10-01), Reynolds
patent: 4239826 (1980-12-01), Knott et al.
patent: 4254169 (1981-03-01), Schroeder
patent: 4284672 (1981-08-01), Stillman
patent: 4289830 (1981-09-01), Knott
patent: 4457960 (1984-07-01), Newsome
patent: 4501797 (1985-02-01), Supor et al.
patent: 4521467 (1985-06-01), Berger
patent: 4539793 (1985-09-01), Malek
patent: 4557780 (1985-12-01), Newsome et al.
patent: 4638913 (1987-01-01), Howe, Jr.

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