Multiwall bag and method of packaging utilizing multiwall bags

Details Multiwall bag and method of packaging utilizing multiwall bags Multiwall bag and method of packaging utilizing multiwall bags

1989-08-31

1991-04-16

Sipos, John

Package making

Methods

Plural covers

53474, 53479, 53482, B65B 706

Patent

active

050072331

ABSTRACT:
A multiwall bag and method of packaging using a multiwall bag are described. The multiwall bag includes an outer paper bag having an uncoated inner surface. One or more thermoplastic bags containing one or more bulk materials are ultrasonically sealed closed, simultaneously green tacking a small portion of the outer surface of such thermoplastic bags to the inner surface of the paper bag. The open end of the paper bag is then closed and folded back on itself with a small amount of adhesive being applied to keep the paper bag closed. As a result, the paper bag is easily opened and the thermoplastic bags can be quickly removed therefrom for wholesale use in compatible processes.

REFERENCES:
patent: 2522200 (1950-09-01), Southwick
patent: 3190441 (1965-06-01), Rausing
patent: 3385024 (1968-05-01), Piazze
patent: 3720559 (1973-03-01), Odom
patent: 3988873 (1976-11-01), Oliverius

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