专利名称：METHOD FOR PRODUCING DRAWN
CONJUGATED FIBER, AND DRAWNCONJUGATED FIBER
发明人：YASHIRO Hirohumi,ENDOU
Kouki,TSUKAHARA Tatsunori
申请号：EP14829244.4申请日：20140722公开号：EP3026149A1公开日：20160601
专利附图：
摘要：Provided are a method for producing a drawn conjugated fiber, capable of
producing a conjugated fiber having a high strength and a thin fineness, and a drawnconjugated fiber. A drawn conjugated fiber is produced by performing a spinning step ofobtaining an undrawn fiber having a core-sheath structure in which a core material is aresin containing, as a main component, a crystalline propylene polymer and a sheathmaterial is a resin containing, as a main component, an ethylene polymer having a meltingpoint lower than that of the core material, by means of melt-spinning (step S1); and adrawing step of drawing the undrawn fiber (step S2). During the production, a fineness ofthe undrawn fiber is adjusted to 1.5 dTex or less, and, in the spinning step, a melt flowrate of the core material discharged from the spinneret is adjusted to 70 to 170 g/10minutes at 230°C and a load of 21.18 N, and a ratio (= a core material MFR/a sheathmaterial MFR) of the melt flow rate of the core material discharged from the spinneret at230°C and a load of 21.18 N to a melt flow rate of the sheath material discharged fromthe spinneret at 230°C and a load of 21.18 N is adjusted to 1 to 2.2.
申请人：Ube Exsymo Co., Ltd.
地址：9-19 Nihonbashi-Tomizawacho Chuo-ku Tokyo 103-0006 JP
国籍：JP
代理机构：Hoffmann Eitle
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