Manufacturing method of porous fibers

A manufacturing method of porous fibers is described as follows. Firstly, filaments are provided and each filament includes a polymer material and a nucleating agent mixed with each other. Then, the filaments are disposed in a saturation tank. Subsequently, a supercritical fluid (SCF) foaming agent...

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Bibliographische Detailangaben
Hauptverfasser: LIANG, MING-TSAI, CHANG, KUNGIN
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:A manufacturing method of porous fibers is described as follows. Firstly, filaments are provided and each filament includes a polymer material and a nucleating agent mixed with each other. Then, the filaments are disposed in a saturation tank. Subsequently, a supercritical fluid (SCF) foaming agent is injected into the saturation tank so that the filaments are dipped in the SCF foaming agent and absorbs a portion of the SCF foaming agent. Then, the filaments are taken out from the saturation tank. Next, the filaments are heated so that the filaments are softened and foam. Then, a stretching process is proceeded to the filaments while the filaments are heated. After the filaments are heated and stretched, the filaments are chilled so as to form porous fibers.