Polymeric film or coating comprising hemicellulose
AssigneeXylophane Aktiebolag
InventorsPaul Gatenholm, Aase Bodin, Maria Gröndahl, Sofia Dammstrom, Lisa Eriksson
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Abstract
A film-forming composition and a polymeric film or coating comprising hemicellulose, having a molecular weight of less than 50 000 g/mol, and at least one component selected from the group consisting of plasticizers, cellulose and a synthetic oligomer or polymer is disclosed. The use of said film or coating as an oxygen barrier is also disclosed. Further, a method for the manufacture of said polymeric film or coating is disclosed, as well as a method for improving the film-forming properties of hemicellulose having a molecular weight of less than 50 000 g/mol.
Claims27
An edible polymeric film formed from a composition consisting essentially of hemicellulose having a molecular weight of less than 50 000 g/mol, and a plasticizer, wherein the components are selected such that the film is edible.
A food or pharmaceutical packaging material having a polymeric film or coating formed on the packaging material, the film or coating formed from a composition consisting essentially of hemicellulose having a molecular weight of less than 50,000 g/mol and a plasticizer, wherein the film or coating providing an oxygen barrier suitable for food or pharmaceuticals.
A food or pharmaceutical carton having a polymeric film or coating formed on the carton, the film or coating formed from a composition consisting essentially of hemicellulose having a molecular weight of less than 50,000 g/mol and a plasticizer, wherein the film or coating providing an oxygen barrier suitable for food or pharmaceuticals.
A paper food or pharmaceutical packaging material having a polymeric film or coating formed thereon, the film or coating formed from a composition consisting essentially of hemicellulose having a molecular weight of less than 50,000 g/mol and a plasticizer, wherein the film or coating providing an oxygen barrier suitable for food or pharmaceuticals.
A method of packaging food or pharmaceutical comprising:
- providing a food or pharmaceutical packaging material;
- forming a polymeric film or coating from a composition consisting essentially of hemicellulose having a molecular weight of less than 50 000 g/mol and a plasticizer on said food or pharmaceutical packaging material to provide an oxygen barrier;
- and
- packaging food or pharmaceutical in the food or pharmaceutical packaging material and using the polymeric film or coating as an oxygen barrier.
A method for the manufacture of a polymeric film or a coating having an oxygen-barrier property suitable for food or pharmaceutical packaging comprising the steps of:
- providing a food or pharmaceutical packaging material;
- and
- forming a polymeric film or coating on the food or pharmaceutical packaging material from a composition consisting essentially of hemicellulose having a molecular weight of less than 50 000 g/mol and a plasticizer to provide the food or pharmaceutical packaging material with an oxygen barrier suitable for food or pharmaceutical packaging.
A coated pharmaceutical or food having an edible polymeric film formed from a composition consisting essentially of hemicellulose having a molecular weight of less than 50 000 g/mol and a plasticizer, wherein the components are selected such that the film is edible.
A packaging material for protecting a substance from oxygen having a polymeric film or coating formed on the packaging material, the film or coating formed from a composition consisting essentially of hemicellulose having a molecular weight of less than 50,000 g/mol and a plasticizer, wherein the film or coating providing an oxygen barrier for protecting a substance from oxygen.
A method of protecting a packaged substance from oxygen comprising:
- providing a packaging material;
- forming a polymeric film or coating from a composition consisting essentially of hemicellulose having a molecular weight of less than 50 000 g/mol and a plasticizer on said packaging material to provide an oxygen barrier;
- and
- packaging a substance in the packaging material to protect the substance from oxygen.
Dependencies are inferred from the claim text.