Paperboard laminate

Details Paperboard laminate Paperboard laminate

1989-05-17

1991-10-22

Sluby, P. C.

Stock material or miscellaneous articles

Hollow or container type article

Paper containing

428 367, 428349, 428512, 428516, 428342, 264 80, 26421112, B65D 8500, B32B 2708

Patent

active

050594591

ABSTRACT:
A non-foil paperboard laminate having improved resistance to the migration of essential oils, flavors and Vitamins in liquid packaging and improved oxygen barrier characteristics for both liquid and dry packaging comprises paperboard sandwiched between two layers of a heat-sealable, low density polyethylene polymer and including a symmetrical five component barrier layer coextruded onto the surface of one of the low density polyethylene layers. The barrier layer comprises low density polyethylene/adhesive tie layer/ethylene vinyl alcohol copolymer/adhesive tie layer/low density polyethylene.

REFERENCES:
patent: 4289830 (1981-09-01), Knott, II
patent: 4513036 (1985-04-01), Thompson et al.
patent: 4701360 (1987-10-01), Gibbons et al.
patent: 4789575 (1988-12-01), Gibbons et al.
patent: 4802943 (1989-02-01), Gibbons et al.
A. L. Blackwell, "High Barrier Polymer", 1986, Tappi Press Coextension Seminar, pp. 13-18.
"Barrier Coextrusion Coating as a Foil Replacement in Paperboard Lamination" presented by Dragan Djordjevic of Er-We-Pa at the ASEPTIPAK '84 Conference in Princeton, N.J. on Apr. 4-6, 1984.

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