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AssigneeContipro A.S.
InventorsTomas Medek, Eliska Sestakova, Marek Pokorny, Vladimir Velebny
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The present invention refers to a method and device for the preparation of microfibres and nanofibres based on hyaluronic acid and/or a water-soluble metal or non-metal salt thereof or a mixture of salts and/or a derivative of hyaluronic acid by method of dry spinning, and two-dimensional or three-dimensional fibrous materials from this microfibres and nanofibres. The resulting 2D or 3D materials can be for example in the shape of layer or cotton wool. Furthermore, the present invention refers to a device for performing this method, that contains an extrusion part containing a pass-through channel, that has an inlet opening for feeding the spinning solution and a dispensing opening for dispensing the spinning solution and furthermore the device contains an air nozzle, the air outlet opening of which is arranged to direct the exiting air into the area surrounding the dispensing opening of the extrusion part parallel to the axis of the dispensing opening of the extrusion part.
A method of preparing fibres based on hyaluronic acid, a water-soluble metal compound thereof, and/or a derivative thereof by dry spinning, said method comprising:
The method of 1, wherein the spinning solution comprises:
Dependencies are inferred from the claim text.