Paperboard laminates having polar copolymer/nonpolar polymer ble

Details Paperboard laminates having polar copolymer/nonpolar polymer ble Paperboard laminates having polar copolymer/nonpolar polymer ble

1991-11-22

1993-03-23

Thibodeau, Paul J.

Stock material or miscellaneous articles

Composite

Of addition polymer from unsaturated monomers

428514, 428520, 428522, 4285375, 4285428, B32B 2308, B32B 2710

Patent

active

051962691

ABSTRACT:
The present invention relates to a novel coextrusion coating for paper or paperboard substrates. The coextrusion includes a nonpolar polymer layer and a thin exterior skin layer made up of a nonpolar polymer and a polar copolymer. The addition of the polar polymer improves long term treatment level retention which improves long term wettability for printing and gluing adhesion during package or carton formation.

REFERENCES:
patent: 4337298 (1982-06-01), Karim et al.
patent: 4513036 (1985-04-01), Thompson et al.
patent: 4684576 (1987-08-01), Tabor et al.

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