Tear string envelope

Details Tear string envelope Tear string envelope

1997-10-15

1999-11-16

Pascua, Jes F.

Envelopes, wrappers, and paperboard boxes

Envelope

Having means to facilitate opening the envelope by severing it

229311, 229313, B65D 2738

Patent

active

059841702

ABSTRACT:
A tear string envelope with the envelope made of an integral blank of sheet material and formed such that the front and rear portion of the envelope is interconnected by side flaps folded inwardly so that side edges and a lower and an upper folding edge are formed under leaving an upper insertion opening which can be closed by a gummed closing flap. The tear string extends at the inner side of an edge, with the tear string adhered at an edge different from that of the closing flap.

REFERENCES:
patent: 1035109 (1912-08-01), Wasmus
patent: 1385493 (1921-07-01), Putney
patent: 1773671 (1930-08-01), Glass
patent: 1821011 (1931-09-01), Greenlaw
patent: 2051939 (1936-08-01), Day
patent: 2056472 (1936-10-01), Lewis
patent: 2162958 (1939-06-01), MacDonald
patent: 2644634 (1953-07-01), Weitzner
patent: 2954916 (1960-10-01), Mela
patent: 2956727 (1960-10-01), Chevan et al.
patent: 3139231 (1964-06-01), Hueschen
patent: 3489068 (1970-01-01), Dziemczyk
patent: 4781296 (1988-11-01), Morris et al.

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