Packaging laminate material

Details Packaging laminate material Packaging laminate material

1994-08-29

1996-06-18

Thibodeau, Paul J.

Stock material or miscellaneous articles

Composite

Of polyester

428 342, 428349, 5283086, 5283087, 528296, 528302, 528307, B32B 2710, B32B 2736, B32B 710, C08G 6316

Patent

active

055276229

ABSTRACT:
A packaging laminate material comprises a paper substrate and a polyester resin layer provided on at least the innermost surface side of the substrate, wherein the polyester resin comprises dicarboxylic acid units comprising terephthalic acid and adipic acid and dihydroxy compound units comprising ethylene glycol and a second different dihydroxy compound. The polyester may also contain polyfunctional units derived from a polycarboxylic acid having a valence of 3 or more and/or derived from a polyglycol having a valence of 3 or more. The packaging laminate has a high heat-sealing strength, a small decrease in the heat-sealing strength even after the laminate is subjected to a hot water treatment or a hot hydrogen peroxide treatment, and is excellent in scent (odor) retention properties.

REFERENCES:
patent: 3182041 (1965-05-01), Watkins et al.
patent: 4006112 (1977-01-01), Bateman et al.
patent: 4122073 (1978-10-01), Georgoudis
patent: 4140729 (1979-02-01), Tobias
patent: 4481352 (1984-11-01), McConnell et al.
patent: 5059470 (1991-10-01), Fukuda et al.
patent: 5116670 (1992-05-01), Suzuki et al.

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