Gusseted pinch bottom valved bags

Details Gusseted pinch bottom valved bags Gusseted pinch bottom valved bags

1977-02-25

1978-01-24

Marcus, Stephen

Envelopes, wrappers, and paperboard boxes

File folder or file envelope

Hanging type

B65D 3114

Patent

active

040699641

ABSTRACT:
An improved multiwall, gusseted, stepped end pinch style bag is disclosed with provisions for forming a valve in one end thereof. The bag is prepared from a plurality of plies of flexible material such as kraft paper or the like and comprises at least one inner ply and one outer ply each of which is cut and scored to permit a valve area to be formed at one end when the gussets in that region are infolded while still retaining the conventional pinch style closure.

REFERENCES:
patent: 1976760 (1934-10-01), Baker
patent: 2294846 (1942-09-01), Haungs
patent: 2895387 (1959-07-01), Robinson et al.
patent: 3472130 (1969-10-01), Brockmuller
patent: 3549298 (1970-12-01), Brockmuller
patent: 3680769 (1972-08-01), Siekierski
patent: 3894682 (1975-07-01), Harmsen
patent: 3990626 (1976-11-01), Goodrich

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