Importance

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Abstract

The invention relates to a spinneret for spinning threads from a spinning mass—in the form of a melt or solution of natural or synthetic origin—comprising a rotationally symmetrical spinneret. The rotationally symmetrical spinneret inner part is surrounded at least partially by a rotationally symmetrical outer part, wherein in the longitudinal direction between the spinneret inner part and outer part an insulating chamber is formed, in which a gas, preferably air, is received in order to form an insulating gas layer. The invention further relates to a spinning device for spinning threads from a spinning mass, comprising a spinneret part and a gas nozzle part arranged at a distance from the spinneret part. A plurality of spinnerets according to the invention are inserted in the spinneret part and project from the spinneret part, facing the gas nozzle part, and the gas nozzle part comprises a plurality of gas nozzles associated with the spinnerets. The gas nozzles are designed as acceleration nozzles for a gas flow that is conducted through the respective gas nozzle and encompasses the monofilaments. Said spinnerets are used in a method for producing spunbonded materials or yarns from polymers of natural or synthetic origin, in order to build up said materials or yarns from extremely fine threads having an average thread diameter of less than 1 μm. The threads from the individual spinnerets can also be collected using conventional winding mechanisms to form yarns on bobbins.

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First Claim