Method for making foil packaging

Details Method for making foil packaging Method for making foil packaging

1989-01-04

1990-08-28

Spruill, Robert L.

Package making

Methods

Forming a cover adjunct or application of a cover adjunct to...

53479, 383 94, B65B 702, B65B 5130, B65B 6118

Patent

active

049514466

ABSTRACT:
A method for making easily openable foil packages. The method comprises the step of forming a longitudinal seam and a transverse seam intersecting with each other, thereby providing grip surfaces which, when pulled apart, break the seal. The apparatus for forming the seam comprises bifurcated tool elements which come together in two orthogonal steps. The package so formed by the apparatus operating in accordance with the method is also novel.

REFERENCES:
patent: 1470172 (1923-10-01), Labombarde
patent: 2189174 (1940-02-01), Hohl
patent: 3038283 (1962-06-01), Unger
patent: 3041802 (1962-07-01), Cummings et al.
patent: 3133392 (1964-05-01), West
patent: 3189253 (1965-06-01), Mojonnier
patent: 3432980 (1969-03-01), Seiferth et al.
patent: 4254601 (1981-03-01), Prager et al.
patent: 4480751 (1984-11-01), Lueptow
patent: 4725329 (1988-02-01), Tani

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