Packaging material having excellent flavor retention

Details Packaging material having excellent flavor retention Packaging material having excellent flavor retention

1995-07-27

1998-08-25

Zimmerman, John J.

Stock material or miscellaneous articles

Composite

Of metal

428480, 428469, 528272, 528275, B32B 1508, B32B 2736, C08G 6302

Patent

active

057981833

ABSTRACT:
The present invention is a packaging material composed of a thermoplastic polyester as a constituent material. By adjusting the contents of a dibasic carboxylic acid and its oligomer derived from the polyester to 500 ppm or less, and adjusting sodium to 6 ppm or less and all alkali metals to 30 ppm or less, especially 20 ppm or less, the flavor retention of the packaging material can be markedly increased.

REFERENCES:
patent: 4278718 (1981-07-01), Billings et al.
patent: 4533576 (1985-08-01), Tanahashi et al.
patent: 4971863 (1990-11-01), Hart
patent: 5262513 (1993-11-01), Tanaka et al.
patent: 5384354 (1995-01-01), Hasegawa et al.
patent: 5424121 (1995-06-01), Murakami et al.
Kirk-Othmer, Encyclopedia of Chemical Technology vol. 10, (No Month) 1980, pp. 450-451.
Guyton, A.C., Textbook of Medical Physiology, (No Month) 1991, W.B. Saunders Co., pp. 581-582.

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