JP7032460B2 - 濾過フィルタの製造方法 - Google Patents
濾過フィルタの製造方法 Download PDFInfo
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- JP7032460B2 JP7032460B2 JP2020011393A JP2020011393A JP7032460B2 JP 7032460 B2 JP7032460 B2 JP 7032460B2 JP 2020011393 A JP2020011393 A JP 2020011393A JP 2020011393 A JP2020011393 A JP 2020011393A JP 7032460 B2 JP7032460 B2 JP 7032460B2
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- 238000001914 filtration Methods 0.000 title claims description 80
- 238000004519 manufacturing process Methods 0.000 title claims description 29
- 239000011347 resin Substances 0.000 claims description 64
- 229920005989 resin Polymers 0.000 claims description 64
- 239000012528 membrane Substances 0.000 claims description 36
- 239000002904 solvent Substances 0.000 claims description 34
- 238000000034 method Methods 0.000 claims description 20
- 239000012535 impurity Substances 0.000 claims description 17
- 229920002492 poly(sulfone) Polymers 0.000 claims description 15
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 10
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 10
- 229920003235 aromatic polyamide Polymers 0.000 claims description 8
- 238000005191 phase separation Methods 0.000 claims description 8
- 239000004760 aramid Substances 0.000 claims description 7
- 239000002033 PVDF binder Substances 0.000 claims description 6
- 239000004642 Polyimide Substances 0.000 claims description 6
- 229920002301 cellulose acetate Polymers 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 6
- 229920001721 polyimide Polymers 0.000 claims description 6
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 6
- -1 polyethylene terephthalate Polymers 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 239000004800 polyvinyl chloride Substances 0.000 claims description 3
- 229920012266 Poly(ether sulfone) PES Polymers 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 23
- 230000000052 comparative effect Effects 0.000 description 15
- 239000011148 porous material Substances 0.000 description 8
- 230000005764 inhibitory process Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000001000 micrograph Methods 0.000 description 4
- 238000000108 ultra-filtration Methods 0.000 description 4
- 230000037303 wrinkles Effects 0.000 description 4
- 239000004695 Polyether sulfone Substances 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 229920006393 polyether sulfone Polymers 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- ATHHXGZTWNVVOU-UHFFFAOYSA-N N-methylformamide Chemical compound CNC=O ATHHXGZTWNVVOU-UHFFFAOYSA-N 0.000 description 2
- 229920006231 aramid fiber Polymers 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000001471 micro-filtration Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
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- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
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- Separation Using Semi-Permeable Membranes (AREA)
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- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
Description
本実施形態に係る濾過フィルタは、不純物を分離して水から濾過可能なもので、たんぱく質、ウィルス及び細菌等を阻止可能な所謂UF膜(又はMF膜)と称されるものである。かかる濾過フィルタ5は、図5に示すように、内部が繊維状の構造体から成る支持体1と、該支持体1の内部に一体的に形成されるとともに、不純物を濾過可能な多孔質樹脂から成る濾過膜Mとを具備している。
先ず、メチルホルムアミドにポリスルホンを溶解して樹脂溶液2(高分子溶液)を作製し(S1)、図2、3に示すように、アラミド繊維パルプを抄紙法にてペーパー状に成形した支持体1に当該樹脂溶液2を含浸させて樹脂含浸体3を得た。
先ず、日東電工CSシステム株式会社製のテープ(No.3800K)を実施例及び比較例の表面(膜面)に貼り付け、それぞれを指で3回こすった後、テープの端を把持して180°に折り返してゆっくりと引っ張った。そして、テープの後方25mmを有効面積として濾過膜(樹脂膜)の剥離を観察したところ、比較例が100%剥離したのに対し、実施例は100%未満(約50%)であった。
2 樹脂溶液
3 樹脂含浸体
4 非溶媒
5 濾過フィルタ
6 支持体
7 樹脂膜
Claims (7)
- 不純物を濾過可能な濾過フィルタの製造方法であって、
繊維状の構造体から成る支持体に対し、所定の樹脂を所定の溶媒に溶解して作製された樹脂溶液を含浸させた後、非溶媒液に浸漬して当該非溶媒液と前記樹脂溶液の溶媒とを置換する相分離現象を生じさせることにより、不純物を濾過可能な多孔質樹脂から成る濾過膜が前記支持体の内部に一体的に形成された濾過フィルタを得ることを特徴とする濾過フィルタの製造方法。 - 前記濾過膜は、開口率が6~30%の多孔質樹脂膜から成ることを特徴とする請求項1記載の濾過フィルタの製造方法。
- 前記支持体は、厚さ寸法が0.03~0.5mmの構造体から成ることを特徴とする請求項1又は請求項2記載の濾過フィルタの製造方法。
- 前記濾過膜は、厚さ寸法が10~500μmの多孔質樹脂から成ることを特徴とする請求項1~3の何れか1つに記載の濾過フィルタの製造方法。
- 前記支持体は、化学繊維を有する構造体から成ることを特徴とする請求項1~4の何れか1つに記載の濾過フィルタの製造方法。
- 前記支持体は、アラミド樹脂又はポリエチレンテレフタレート樹脂から成ることを特徴とする請求項5記載の濾過フィルタの製造方法。
- 前記濾過膜は、ポリスルホン(PSF)、ポリフッ化ビニリデン(PVDF)、ポリエーテルサルフォン(PES)、ポリイミド(PI)、ポリ塩化ビニル(PVC)又はセルロースアセテート(CA)から成ることを特徴とする請求項1~6の何れか1つに記載の濾過フィルタの製造方法。
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
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JP2020011393A JP7032460B2 (ja) | 2020-01-28 | 2020-01-28 | 濾過フィルタの製造方法 |
EP21746322.3A EP4098352A4 (en) | 2020-01-28 | 2021-01-14 | FILTRATION FILTER AND PRODUCTION METHOD THEREFOR |
PCT/JP2021/001099 WO2021153255A1 (ja) | 2020-01-28 | 2021-01-14 | 濾過フィルタ及びその製造方法 |
IL294256A IL294256A (en) | 2020-01-28 | 2021-01-14 | Filter and method for its preparation |
KR1020227026875A KR20220128635A (ko) | 2020-01-28 | 2021-01-14 | 여과 필터 및 그것의 제조 방법 |
CN202180006955.6A CN114786798A (zh) | 2020-01-28 | 2021-01-14 | 过滤器及其制造方法 |
TW110103023A TW202142311A (zh) | 2020-01-28 | 2021-01-27 | 過濾器及其製造方法 |
US17/843,988 US20220362719A1 (en) | 2020-01-28 | 2022-06-18 | Filtration Filter And Method For Producing The Same |
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US (1) | US20220362719A1 (ja) |
EP (1) | EP4098352A4 (ja) |
JP (1) | JP7032460B2 (ja) |
KR (1) | KR20220128635A (ja) |
CN (1) | CN114786798A (ja) |
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Citations (1)
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JP2017213515A (ja) | 2016-05-31 | 2017-12-07 | 株式会社クラレ | 多孔質膜、複合膜、及び多孔質膜の製造方法 |
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Publication number | Priority date | Publication date | Assignee | Title |
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JPS61118106A (ja) * | 1984-11-14 | 1986-06-05 | Kurabo Ind Ltd | 異方性濾過膜の製法 |
JPH09299772A (ja) | 1996-05-13 | 1997-11-25 | Nitto Denko Corp | ポリスルホン系限外濾過膜及びその製造方法 |
DE19729456C1 (de) * | 1997-07-10 | 1998-10-22 | Sartorius Gmbh | Integral vliesverstärkte poröse Membranen |
JP2005081226A (ja) * | 2003-09-08 | 2005-03-31 | Institute Of Physical & Chemical Research | ナノ濾過膜およびその製造方法 |
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