Expansible envelope

Details Expansible envelope Expansible envelope

1974-06-28

1976-05-11

Price, William

Envelopes, wrappers, and paperboard boxes

File folder or file envelope

Hanging type

229DIG3, B65D 3110

Patent

active

039557499

ABSTRACT:
An expansible envelope container, folder, bag and the like formed from a one-piece unitary blank is provided. The envelope includes a front panel and rear panel separated by a bottom panel. Each of the front and rear panels has a flap extending outwardly from its left and right side edges. Each of these flaps includes an adhesive and an adhesive-free zone. The front and rear panel right side flaps are secured to each other and similarly the front and rear panel left side flaps are secured to each other. An integral blank for forming the envelope container, folder, bag and the like is also disclosed.

REFERENCES:
patent: 2832433 (1958-04-01), Brace
patent: 3552640 (1971-01-01), Young

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