Packaging bag

Details Packaging bag Packaging bag

1980-04-18

1981-10-27

Van Balen, William J.

Stock material or miscellaneous articles

Hollow or container type article

Cellular material derived from plant or animal source

428110, 428161, 428162, 428172, 428211, 428247, 428910, B65D 3302, B32B 330, B32B 512, B32B 704

Patent

active

042974020

ABSTRACT:
A packaging bag made by the use of a reinforced sheet in which non-woven cross-linked plastic sheets are inserted between cellulosic papers. The non-woven cross-linked sheet consists of split films with narrow width crossing each other laterally and longitudinally with slightly protruded intersections. The reinforced sheet is made by inserting the non-woven cross-linked sheets between cellulosic papers during paper making on a combination paper machine, thereby slightly protruded portions caused by the intersections in the non-woven sheets can be secured on the whole surface of the reinforced sheet. The bag thus manufactured using the reinforced sheet has extremely improved strength and handling properties as well as good air permeability compared with the conventional paper and plastic film bags.

REFERENCES:
patent: 3575777 (1971-04-01), Allport
patent: 3746607 (1973-07-01), Harmon et al.
patent: 3775231 (1973-11-01), Thomas
patent: 3973063 (1976-08-01), Clayton
patent: 4101359 (1978-07-01), Failliot
patent: 4174804 (1979-11-01), Bosse

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