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Title
Verfahren und Vorrichtung zur Herstellung von superfeinen Polymerfasern durch Melt-blown-Technik
Date Issued
2012
Author(s)
Patent No
102012004227
Abstract
Producing polymer fibers (2), comprises (a) providing a polymer melt (3), (b) extruding the polymer melt using at least one spinning nozzle arrangement (4) to obtain polymer fibers in a free jet, (c) stretching the polymer fibers using a primary gas stream, (d) cooling the polymer fibers during stretching, and (e) tempering the polymer fibers during stretching. Independent claims are also included for: (1) a device (1) for producing the polymer fibers, comprising a spinning nozzle arrangement for extruding the polymer melt to obtain polymer fibers in free jet, a primary gas supply device for stretching the polymer fibers, a secondary gas supply device for cooling the polymer fibers during stretching, which is arranged downstream of the spinning nozzle arrangement, and a tertiary gas supply device for tempering the polymer fibers during further stretching, which is arranged downstream of the secondary gas supply device; and (2) a filter comprising at least one filtering medium prepared by the above method and/or the above device.
Language
de
Patenprio
DE 102012004227 A1: 20120306