Film structures containing oxygen scavenging compositions and method of application
OwnerThomas F. Hunt, Deane Galloway +1inventors
InventorsThomas F. Hunt, Deane Galloway, Daniel Miller
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Abstract
A polymeric film structure having one or more polymeric layers wherein an oxygen scavenging composition is affixed to the inside surface layer of the structure. The structure having usefulness in the packaging of foods and non-food articles wherein an oxygen free or a relative oxygen free environment is desirable for the contained article. The oxygen scavenging composition comprising a primer layer; a pigmented layer, an oxygen scavenger layer and an overcoat layer wherein each layer is applied one or more times to the polymeric film structure by a printing method preferably a flexographic printing process.
Claims25
A polymeric film structure having one or more layers wherein an oxygen scavenging composition is coated onto the inside surface layer of the polymeric film structure and wherein said oxygen scavenging composition comprises a primer layer, a pigmented layer, an oxygen scavenger layer, and an overcoat layer wherein each layer of said oxygen scavenging composition except for the oxygen scavenger layer is optionally present.
A polymeric film structure having one or more layers wherein an oxygen scavenging composition is coated to the inside surface layer of said polymeric film structure and wherein said oxygen scavenging composition comprises a primer layer, a pigmented layer, an oxygen scavenger layer and an overcoat layer and wherein each layer of the oxygen scavenging composition is sequentially applied one or more times to the structure using a printing method.
A method for affixing or coating an oxygen scavenger composition to the inside surface of a polymeric film structure wherein the method for affixing or coating each individual layer of said oxygen scavenger composition comprises the following steps:
- (a) suspending the material to be affixed or coated to said web structure by use of a metering chambered doctor blade inker unit or a two-roll ink-fountain pan;
- (b) transferring the material to be affixed or coated to said web to a fountain roll by rotation of said fountain roll in the chambered doctor blade inker unit or the two-roll ink-fountain pan;
- (c) transferring the material to be affixed or coated to said web to an anilox roll by rotation of the fountain roll or the chambered doctor blade directly against the anilox roll;
- (d) transferring the material to be affixed or coated to said web structure to the raised impressions of the plate cylinder by rotation of the anilox roll against the plate cylinder;
- (e) affixing or coating the material to the polymeric web structure by feeding the polymeric web structure between the plate cylinder which holds the material to be affixed and the impress cylinder;
- (f) Drying the coated side of the web by passing said web through an in-line dryer at a temperature between 100° F. to 250° F.;
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- (g) Cooling the uncoated side of the web by passing said side over a cooling roll.
A method for preparing a polymeric film structure comprising an oxygen scavenging composition wherein said method comprises coating said oxygen scavenging composition onto said polymeric film structure by a printing process.
A polymeric film structure having one or more layers wherein an oxygen scavenging composition is coated onto the inside surface layer of the polymeric film structure and wherein said oxygen scavenging composition comprises a primer layer, a pigmented layer, an oxygen scavenger layer, and an overcoat layer wherein each layer of said oxygen scavenging composition except for the oxygen scavenger layer is optionally present and wherein the oxygen scavenging composition is applied to said polymeric structure by a printing method.
Dependencies are inferred from the claim text.