Process for preparing a paperboard laminate

Details Process for preparing a paperboard laminate Process for preparing a paperboard laminate

1991-03-12

1992-05-19

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Flame contact or reshaping by heat decomposition of work

264171, 2641761, 264 22, 4251335, 427326, B29C 1300, B29C 4706

Patent

active

051146266

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 has a 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 includes low density polyethylene/adhesive tie layer/Ethylene vinyl alcohol copolymer/adhesive tie layer/low density polyethylene.

REFERENCES:
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patent: 4513036 (1983-10-01), Thompson et al.
patent: 4701360 (1986-05-01), Gibbons et al.
patent: 4789575 (1987-05-01), Gibbons et al.
patent: 4802943 (1988-07-01), Gibbons et al.
patent: 4888222 (1988-05-01), Gibbons et al.
patent: 5002833 (1991-03-01), Kihsey, Jr. et al.
"Extrusion Coaters Gear For New Packaging Action" Plastics World, Mark Schlack, Jul. 1984, pp. 42-47.
1986 TAPPI PRESS Coextrusion Seminar, entitled "High Barrier Polymers" by A. L. Blackwell.
Barrier Coextrusion Coating as a Foil Replacement in Paperboard Lamination, Dragan Djordjevic, Apr. 4-6, 1984 pp. 119-148.

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