专利名称：Filament nonwoven fabrics and method of
fabricating the same
发明人：Nagaoka, Koichi, c/o Research and
Development,Matsuoka, Fumio, c/o
Research and Development,Ichise, Naoji, c/oResearch and Development
申请号：EP99108935.0申请日：19960916公开号：EP0949371A2公开日：19991013
摘要：The nonwoven fabric is made up of filaments comprised of a biodegradablepolymer composed principally of a thermoplastic aliphatic polyester, wherein the
filaments have a crystallization degree of 7 to 40 % and a supercool index of 0,4 or more.A method of fabricating the nonwoven fabric comprises the steps of melting the
biodegradable polymer, said biodegradable polymer having a melt flow rate of 10 to 100g/10 minutes as measured at 190°C according to ASTM-D-1238 (E), in a temperaturerange of from (Tm + 20)°C to (Tm + 80)°C, where Tm°C is the melting point of thebiodegradable polymer; extruding the melt through a spinneret into filaments; draftingthe extruded filaments by means of a suction device disposed below the spinneret undera quenching air blow of not more than 20°C generated through a conventional device andat a drafting speed of from 1,000 to 5,000 m/minute, thereby fining them down into finerfilaments; then depositing such filaments, as they are spread open each other, and arelaid up on a travelling collector surface to form a web; and heat-treating the web thereby
to obtain the nonwoven fabric.
申请人：UNITIKA LTD.
地址：50, Higashihommachi 1-chome Amagasaki-shi Hyogo-ken JP
国籍：JP
代理机构：Kügele, Bernhard
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