发明名称 MELT-BLOWN NONWOVEN FABRIC AND COMPOSITE FILTER MEDIUM
摘要 <p>PROBLEM TO BE SOLVED: To provide a composite filter medium which is a filter medium including gas-removing particles held therein, and which is free from breakage even when pleated and has high collection efficiency; and to provide a melt-blown nonwoven fabric which is suitably used for an air filter unit made by pleating the filter medium.SOLUTION: A melt-blown nonwoven fabric is a nonwoven fabric including long fibers which are formed of a thermoplastic resin and have average single fiber diameter of 0.1μm to 8.0μm. The nonwoven fabric has an average degree of fiber orientation of 40 to 80 degrees and apparent density of 0.1 to 0.5 g/cm, and is electret-processed. The melt-blown nonwoven fabric can be appropriately produced by: making an adjustment so that the center of a collection drum 15 is arranged ahead of a vertical direction below a spinneret 14 in a sheet travel direction; jetting the thermoplastic resin from the spinneret 14 as a melt-blown fiber flow; and adjusting a jetting flow rate so that the melt-blown fiber flow is vertically collected on the collection drum 15.</p>
申请公布号 JP2015183327(A) 申请公布日期 2015.10.22
申请号 JP20140062199 申请日期 2014.03.25
申请人 TORAY IND INC 发明人 ITO MASASHI;YAGAKE YOSHIKAZU;NISHIURA EIICHI
分类号 D04H3/16;A61L9/00;A61L9/16;B01D39/16;B01D46/52;B03C3/02;B03C3/28;B03C3/64;B32B5/26;F24F13/28 主分类号 D04H3/16
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