Sulphur dioxide film

Details Sulphur dioxide film Sulphur dioxide film

A - Human Necessities

01

N

A01N 25/10 (2006.01) A23B 4/16 (2006.01) A23B 7/152 (2006.01) A23L 3/3445 (2006.01) B32B 27/18 (2006.01) B65D 81/28 (2006.01) C08K 3/30 (2006.01) C08L 1/12 (2006.01)

Patent

CA 2147872

Single and multi-layer materials and polymeric films for use in packaging of produce are disclosed. The material and po- lymeric films incorporate a sulphur dioxide-liberating compound(s) and one or more of the following additives: an acid com- pound(s); a hygroscopic compound(s); a polymer(s) which degrades to produce an acid; a compound(s) which becomes or gen- erates an acid or acidic gas in a humid environment; wherein the amount and identity(ies) of the additive(s) may be selected to provide a predetermined, controlled rate of sulphur dioxide liberation.

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