Liminated multilayer film composite and heat sealed bag made the

Details Liminated multilayer film composite and heat sealed bag made the Liminated multilayer film composite and heat sealed bag made the

1990-08-07

1992-07-28

Robinson, Ellis P.

Stock material or miscellaneous articles

Hollow or container type article

Nonself-supporting tubular film or bag

428192, 428195, 428200, 428204, 383109, 383116, 383123, 426127, B32B 710, B65D 3014

Patent

active

051340011

ABSTRACT:
An adhesively laminated composite plastic film comprising at least two layers of preformed plastic film adhered together by means of an adhesive material disposed therebetween but having preselected areas which contain neither the adhesive nor anything else which is incompatible with said plastic is disposed between the layers of plastic film or on the surfaces thereof. The composite is quite usable for forming into plastic bags by either folding the composite film upon itself and heat sealing the meeting edges, or by superposing the composite film with at least one other plastic film, which may itself be a composite film, and then heat sealing the meeting edges. The preselected areas which are devoid of adhesive correspond to the heat seal areas.

REFERENCES:
patent: 3408218 (1968-10-01), Muylwijk
patent: 3817821 (1974-06-01), Gallini
patent: 4063641 (1977-12-01), Kuehn
patent: 4101701 (1978-07-01), Gordon
patent: 4235365 (1980-11-01), Yoshii
patent: 4246307 (1981-01-01), Trautwein
patent: 4337862 (1982-07-01), Suter
patent: 4389436 (1983-06-01), Weiner

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