Cellutech Ab

Rise Innventia Ab

Stora Enso Ab

Lars Wågberg

Mats Fredlund

Marcus Ruda

Daniel Söderberg

Christopher Carrick

Fredrik Lundell

Mathias Kvick

Gunilla Pettersson

Bert Pettersson

Hans Höglund

Andreas Fall

Karl Håkansson

Hans Hallgren

Karl HÅKANSSON

The invention relates to a continuous, scalable and parallelizable method for preparing strong and stiff fibers (filaments) or films. The fiber or film is prepared by utilizing hydrodynamically induced alignment of the constituents of a dispersion in combination with surface-charge controlled gel transition to produce fibers with a high degree of alignment of the constituents (polymer(s), fibrils etc). The invention also relates to the fibers or films so formed.

Method of spinning fibres or extrusion, and the products obtained

The present invention relates to a method for the preparation of polymer shells, preferably composed of cellulose or hemicellulose, comprising the steps of dissolving the polymer component in a first solvent, preferably an organic solvent and precipitating the polymer component by contacting the first solution with a second solvent, which second solvent has a polar character, and in which second solvent the polymer component is essentially insoluble, thereby obtaining polymer shells. Moreover, the invention refers to the polymer shells as such, having permeable and responsive properties, as well as various applications comprising such polymer shells within the fields of drug delivery, separation techniques, and inter alia filling material.

Polymer shells

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Lidingö, Sweden

Lars Wågberg