Flexible bags – Lifting or suspending element – Unitary with bag
Patent
1985-06-20
1987-09-01
Marcus, Stephen
Flexible bags
Lifting or suspending element
Unitary with bag
383 93, 206526, B65D 3316, B65D 3018
Patent
active
046913688
ABSTRACT:
A flexible package that conforms closely to and fully encloses one or more objects with square or rectangular sides is formed of a flexible, light weight, and preferably heat sealable material such as a thermoplastic. In the preferred embodiments, the packaging is manufactured from tubular or parallel sheets of flexible thermoplastic material laid flat to form two layers, which are than folded into a U-shape with the band at the bottom and the side seams heat sealed to form an open topped, double walled package. The package specifications are determined from the dimensions and quantity of the objects to be packaged. Prior to sealing the sides of the package, the bottom portion of the material is tucked up between the sides to a distance equal to one-half the depth of the finished container so that when the objects are placed in the container, the bottom corners spread to form right angles. At a distance up from the bottom equal to the height of the finished package, internal sealing flaps are formed by cutting areas in the upper portion of the package inwardly for a distance equal to one-half the depth of the objects to be contained and upwardly for a distance equal to one-half the depth, plus an overlap. These fold over the contained objects to create a top with corners at right angles, without excess material at the sides. The flaps are sealed by means such as a strip of adhesive or double sided tape.
REFERENCES:
patent: 1509922 (1924-09-01), Belz
patent: 2112406 (1938-03-01), Metro
patent: 2265075 (1941-12-01), Knuetter
patent: 3093295 (1963-06-01), Kugler
patent: 3145908 (1964-08-01), Smith
patent: 3279331 (1966-10-01), Platt
patent: 3502258 (1970-03-01), Kugler et al.
patent: 3850724 (1974-11-01), Lehmacher
patent: 3917160 (1975-11-01), Olerud
patent: 4211091 (1980-07-01), Campbell
Ehrhardt Brenda J.
Marcus Stephen
Ocor Products Corporation
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