Billerudkorsnas Ab

Per Larsson

Lars Wagberg

Lars WÅGBERG

There is provided a package material comprising an oxygen barrier polymer film, wherein the film comprises a polymer obtainable by a process comprising the steps of: a) oxidizing cellulose fibers to ultimately obtain cross-linked cellulose; and b) homogenizing the product of step a) to obtain fibrils in a width range of 1 nm to 150 nm. A corresponding use is also provided.

Oxygen and water vapour barrier films with low moisture sensitivity fabricated from self-cross-linking fibrillated cellulose

There is provided a use of a material comprising fibers as an oxygen barrier, wherein the fibers comprise native cellulose and dialcohol cellulose. There is also provided a material comprising fibers and having a density of at least 1200 kg/m, wherein the fibers comprise native cellulose and dialcohol cellulose and the oxygen permeability of the material according to ASTM D3985 is below 30 ml&#xb7;&#x3bc;m/(m&#xb7;kPa&#xb7;24 h) at 23&#xb0; C. and 80% relative humidity.

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Danderyd, Sweden

Per Larsson