JP2007021400A5 - - Google Patents

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Publication number
JP2007021400A5
JP2007021400A5 JP2005208245A JP2005208245A JP2007021400A5 JP 2007021400 A5 JP2007021400 A5 JP 2007021400A5 JP 2005208245 A JP2005208245 A JP 2005208245A JP 2005208245 A JP2005208245 A JP 2005208245A JP 2007021400 A5 JP2007021400 A5 JP 2007021400A5
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JP
Japan
Prior art keywords
fibers
fiber
porous sheet
filter according
branched
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JP2005208245A
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Japanese (ja)
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JP4839709B2 (en
JP2007021400A (en
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Priority to JP2005208245A priority Critical patent/JP4839709B2/en
Priority claimed from JP2005208245A external-priority patent/JP4839709B2/en
Publication of JP2007021400A publication Critical patent/JP2007021400A/en
Publication of JP2007021400A5 publication Critical patent/JP2007021400A5/ja
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Publication of JP4839709B2 publication Critical patent/JP4839709B2/en
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Claims (7)

熱溶融性高分子化合物からなる繊維が数平均繊維直径０．０１〜２μｍに枝分かれした繊維を含む多孔質シートを用いてなることを特徴とするフィルター。   A filter comprising a porous sheet containing fibers in which fibers made of a heat-meltable polymer compound are branched to a number average fiber diameter of 0.01 to 2 μm. 前記多孔質シートが、前記枝分かれ繊維の繊維径より３倍から４００倍大きい他の繊維を少なくとも２種類含むことを特徴とするフィルター。The filter, wherein the porous sheet contains at least two types of other fibers that are 3 to 400 times larger than the fiber diameter of the branched fibers. 多孔質シート表面に、表面積０．０１ｃｍ２中に存在する平均繊維本数が１本以上である不織布が積層された不織布付き多孔質シートを用いてなる請求項１または２記載のフィルター。 The filter according to claim 1 or 2, wherein a porous sheet with a nonwoven fabric, in which a nonwoven fabric having an average number of fibers of 1 or more in a surface area of 0.01 cm 2 is laminated on the surface of the porous sheet. 枝分かれした繊維が、ポリマーアロイ製法を利用して作られた繊維であることを特徴とする請求項１〜３のいずれかに記載のフィルター。 The filter according to any one of claims 1 to 3, wherein the branched fiber is a fiber made by using a polymer alloy manufacturing method. 不織布が、エレクトレット不織布である請求項３記載のフィルター。 The filter according to claim 3 , wherein the nonwoven fabric is an electret nonwoven fabric. 枝分かれした繊維が、ポリアミド、ポリエステル、ポリオレフィンおよびポリ乳酸繊維からなる群から選ばれた少なくとも１種類の繊維である請求項１〜５のいずれかに記載のフィルター。 The filter according to any one of claims 1 to 5 , wherein the branched fiber is at least one kind of fiber selected from the group consisting of polyamide, polyester, polyolefin, and polylactic acid fiber. 多孔質シートが抄紙法により製造され、バインダー付着率５％以下または熱融着型繊維で繊維間が接着されシート化されてなる請求項１〜６のいずれかに記載のフィルター。 The filter according to any one of claims 1 to 6 , wherein the porous sheet is produced by a papermaking method, and the binder adhesion rate is 5% or less, or the fibers are bonded to each other with heat-sealable fibers.
JP2005208245A 2005-07-19 2005-07-19 Filter and manufacturing method thereof Active JP4839709B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005208245A JP4839709B2 (en) 2005-07-19 2005-07-19 Filter and manufacturing method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005208245A JP4839709B2 (en) 2005-07-19 2005-07-19 Filter and manufacturing method thereof

Publications (3)

Publication Number Publication Date
JP2007021400A JP2007021400A (en) 2007-02-01
JP2007021400A5 true JP2007021400A5 (en) 2008-07-24
JP4839709B2 JP4839709B2 (en) 2011-12-21

Family

ID=37782848

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005208245A Active JP4839709B2 (en) 2005-07-19 2005-07-19 Filter and manufacturing method thereof

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JP (1) JP4839709B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4976487B2 (en) * 2007-04-17 2012-07-18 帝人ファイバー株式会社 Wet nonwovens and filters
CN102277795A (en) * 2011-08-12 2011-12-14 浙江凯恩特种材料股份有限公司 Filter bag filter paper, tea filter bag and bagged tea
CN111330355B (en) * 2020-02-28 2022-06-14 厦门理工学院 Electret nanofiber high-efficiency filter material and preparation method thereof

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3305372B2 (en) * 1992-10-15 2002-07-22 三菱製紙株式会社 Filter media for liquid filtration
JPH1112183A (en) * 1997-06-26 1999-01-19 Asahi Medical Co Ltd Filter medium for removing leukocyte and removal of leukocyte
JP4064593B2 (en) * 1999-09-30 2008-03-19 三菱製紙株式会社 Laminated sheet and filter medium with flame retardancy and low gas generation
JP2002001020A (en) * 2000-04-10 2002-01-08 Toray Ind Inc Filtering medium
JP4184917B2 (en) * 2002-10-23 2008-11-19 東レ株式会社 Nanofiber assembly

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