Flexible packaging material containing an antioxidant

Details Flexible packaging material containing an antioxidant Flexible packaging material containing an antioxidant

1988-06-27

1989-11-14

Lesmes, George F.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Adhesive outermost layer

428514, 4285375, 156243, 15624411, B32B 700

Patent

active

048806960

ABSTRACT:
The concentration of BHT in a flexible packaging material, such as a cereal liner, can be increased by incorporating the BHT into a polymer composition that is extrusion coated onto a substrate, such as PVDC-coated paper. The extrusion coating comprises a heatseal layer and an EVA tie layer containing the BHT. This method substantially prevents evaporation of the BHT. The extrusion temperature is less than the boiling point of BHT.

REFERENCES:
patent: 3707393 (1972-12-01), McDonald
patent: 4252846 (1981-02-01), Romesburg et al.
patent: 4265949 (1981-05-01), Kugimiya

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