公开(公告)号：US20120103895A1

公开(公告)日：2012-05-03

申请号：US13382199

申请日：2010-07-08

Applicant: Yasuhiro Tada ,  Takeo Takahashi

Inventor： Yasuhiro Tada ,  Takeo Takahashi

IPC: B01D71/34 ,  B29C67/20

CPC classification number: D01F6/48 ,  B01D67/002 ,  B01D69/08 ,  B01D69/087 ,  B01D71/34 ,  B01D2325/02 ,  C02F1/444 ,  C02F3/1268 ,  D01D5/24 ,  D01F1/10 ,  Y02W10/15

Abstract: A porous membrane of vinylidene fluoride resin, including a 10 μm-thick portion contiguous to one surface thereof which comprises network resin fibers having an average diameter of at most 100 nm and shows a porosity A1 of at least 60% as measured by a focused ion beam-scanning electron microscope, and showing a surface pore size of at most 0.3 μm on said one surface thereof. The porous membrane has a treated water side surface layer showing a small surface pore size suitable for water filtration treatment and formed of extremely thin network resin fibers giving an extremely high porosity, thus showing an excellent minute particle-blocking performance and also extremely good anti-soiling resistance and regeneratability. The porous membrane is produced by a process including: melt-extrusion of a composition obtained by adding to vinylidene fluoride resin of a large molecular weight a relatively large amount of a polyester plasticizer which is mutually soluble with the resin and provides the resultant mixture with a crystallization temperature that is substantially identical to that of the vinylidene fluoride resin alone to form film, followed by cooling from one side of the film to solidify the film, extracting the plasticizer and stretching the membrane after the extraction while partially wetting a surface portion thereof.

Abstract translation: 偏二氟乙烯树脂的多孔膜包括与其一个表面相邻的10μm厚的部分，其包含平均直径为至多100nm的网状树脂纤维，并且通过聚焦离子测量显示出至少60％的孔隙率A1 光束扫描电子显微镜，并且在其一个表面上显示出至多0.3μm的表面孔径。 多孔膜具有处理水侧表面层，其表现出适于水过滤处理的小表面孔径，并且由极细的网状树脂纤维形成，具有极高的孔隙率，因此显示出极好的微粒阻挡性能， 耐污染性和再生性。 多孔膜是通过以下方法制造的：将通过向大分子量的偏二氟乙烯树脂中加入相对大量与树脂相溶的聚酯增塑剂而获得的组合物进行熔融挤出，并将所得混合物与 结晶温度与单独的偏二氟乙烯树脂基本上相同以形成膜，然后从膜的一侧冷却以固化膜，萃取增塑剂并在提取之后拉伸膜，同时部分润湿其表面部分。

公开(公告)号：US20100224548A1

公开(公告)日：2010-09-09

申请号：US11992738

申请日：2006-09-15

Applicant: Yasuhiro Tada ,  Yasushi Ebihara ,  Masayuki Hino ,  Toshiya Mizuno ,  Takaaki Mukumoto

Inventor： Yasuhiro Tada ,  Yasushi Ebihara ,  Masayuki Hino ,  Toshiya Mizuno ,  Takaaki Mukumoto

IPC: B01D63/02 ,  B32B38/00 ,  B29C65/00

CPC classification number: B01D63/021 ,  B01D63/02 ,  B01D63/043 ,  B01D2313/02 ,  B01D2313/14 ,  B01D2321/00

Abstract: The object of the invention is to provide: a screen-like object made of hollow fibers, a method of manufacturing a hollow fiber bundle, a cylindrical module of hollow fiber membrane, and an immersion type module of hollow fiber membrane wherein the hollow fibers are easy to bundle while keeping fiber-to-fiber intervals. The screen-like object made of hollow fibers includes: porous hollow fibers 10 disposed parallel at even intervals, tapes 26 for tying together the hollow fibers respectively at both ends of the hollow fibers, and a water-soluble tape for tying together the hollow fibers at a position apart from both ends of the hollow fibers across the hollow fibers. The method of manufacturing a hollow fiber bundle includes: the steps of forming a screen-like object made of hollow fibers, sealing one end or both ends of the hollow fibers, winding up the screen-like object made of hollow fibers so as to bundle the hollow fibers, forming pottings for integrally securing both ends, respectively, of the wound-up screen-like object, and cutting the potting together with the hollow fibers along a plane at right angles to the hollow fibers to cut off a sealed end and to open the hollow fibers.

Abstract translation: 本发明的目的是提供一种由中空纤维制成的丝网状物体，中空纤维束的制造方法，中空纤维膜的圆筒状模块以及中空纤维膜的浸渍型组件，其中中空纤维为 容易捆绑，同时保持纤维间隔。 由中空纤维制成的丝网状物体包括：以均匀间隔平行设置的多孔中空纤维10，用于将中空纤维分别与中空纤维的两端结合在一起的带26和用于将中空纤维捆扎在一起的水溶性带 在穿过中空纤维的中空纤维的两端分开的位置。 制造中空纤维束的方法包括：形成由中空纤维制成的丝网状物体，密封中空纤维的一端或两端的步骤，卷绕由中空纤维制成的丝网状物体，以便捆扎 中空纤维，分别形成用于一体地固定卷绕的丝网状物体的两端的盆栽，并且与中空纤维一起沿着与中空纤维成直角的平面切割灌封，以切断密封端，并且 打开中空纤维。

公开(公告)号：US07780014B2

公开(公告)日：2010-08-24

申请号：US11578425

申请日：2005-04-07

Applicant: Yasuhiro Tada ,  Takeo Takahashi ,  Masayuki Hino ,  Shingo Taniguchi ,  Kenichi Suzuki ,  Toshiya Mizuno

Inventor： Yasuhiro Tada ,  Takeo Takahashi ,  Masayuki Hino ,  Shingo Taniguchi ,  Kenichi Suzuki ,  Toshiya Mizuno

IPC: B01D39/00 ,  B28B3/20 ,  B29C47/00

CPC classification number: B01D71/34 ,  B01D67/0011 ,  B01D67/0018 ,  B01D67/0027 ,  B01D67/003 ,  B01D67/0088 ,  B01D69/02 ,  B01D69/08 ,  B01D2323/20 ,  B01D2323/48 ,  B01D2325/24 ,  B01D2325/32 ,  B01D2325/34 ,  D01D5/24 ,  D01F6/12

Abstract: A composition is formed by blending a vinylidene fluoride resin having a relatively high molecular weight and an improved crystallinity represented by a difference Tm2−Tc of at most 32° C. between an inherent melting point Tm2 and a crystallization temperature Tc of the resin with a plasticizer and a good solvent for vinylidene fluoride resin, and the composition is melt-extruded into a hollow fiber-form. The hollow fiber-form extrudate is then cooled to be solidified from an outside thereof by introduction into cooling medium and subjected to extraction of the plasticizer and stretching, thereby forming a hollow fiber porous membrane of vinylidene fluoride resin characterized by co-presence of crystal oriented portion and crystal non-oriented portion recognizable by X-ray diffraction method. The resultant hollow fiber porous membrane of vinylidene fluoride resin has micro-pores of appropriate size and distribution, is excellent in mechanical strength represented by tensile strength and elongation at break and is useful as a water microfiltration membrane.

Abstract translation: 通过将具有相对较高分子量和改善的结晶度的偏二氟乙烯树脂与具有至少32℃的差Tm2-Tc表示的固有熔点Tm2和树脂的结晶温度Tc混合形成组合物， 增塑剂和偏氟乙烯树脂的良溶剂，并将组合物熔融挤出成中空纤维形式。 然后将中空纤维状挤出物从外部冷却，通过引入冷却介质中进行固化，并进行增塑剂的提取和拉伸，形成偏氟乙烯树脂的中空纤维多孔膜，其特征在于，以晶体取向共存 部分和晶体非取向部分可通过X射线衍射法识别。 得到的偏氟乙烯树脂中空纤维多孔膜具有适当尺寸和分布的微孔，机械强度优异，以拉伸强度和断裂伸长率为代表，可用作水微滤膜。

公开(公告)号：US20090261034A1

公开(公告)日：2009-10-22

申请号：US11991955

申请日：2006-09-12

Applicant: Takeo Takahashi ,  Yasuhiro Tada ,  Kenichi Suzuki ,  Masayuki Hino ,  Toshiya Mizuno

Inventor： Takeo Takahashi ,  Yasuhiro Tada ,  Kenichi Suzuki ,  Masayuki Hino ,  Toshiya Mizuno

IPC: B01D71/34 ,  B01D69/08

CPC classification number: B01D71/34 ,  B01D63/024 ,  B01D67/0027 ,  B01D67/0086 ,  B01D69/02 ,  B01D69/08 ,  B01D69/087 ,  B01D2313/24 ,  B01D2323/12 ,  B01D2323/20 ,  C02F1/444 ,  D01D5/247 ,  D01F6/12

Abstract: A hollow-fiber porous membrane comprising a hollow-fiber form of vinylidene fluoride resin and satisfying the following properties (A) and (B), is provided as a hollow-fiber porous membrane of vinylidene fluoride resin having an average pore size and a further uniform pore size distribution (A) and a large water permeation rate regardless of good efficiency of blocking minute particles (bacteria) (B), as represented by: (A) a ratio Pmax (1 m)/Pm of at most 4.0 between a maximum pore size Pmax (1 m) measured at a test length of 1 m according to the bubble point method and an average pore size Pm of 0.05-0.20 μm measured according to the half dry method; and (B) a ratio F (L=200 mm, v=70%)/PM2 of at least 3000 (m/day·μm2), wherein the ratio F (L=200 mm, v=70%)/Pm2 denotes a ratio between F (L=200 mm, v=70%) which is a value normalized to a porosity v=70% of a water permeation rate F (100 kPa, L=200 mm) measured at a test length L=200 mm under the conditions of a pressure difference of 100 kPa and a water temperature of 25° C. and a square Pm2 of an average pore size Pm. The hollow-fiber porous membrane is produced by a process, comprising: subjecting a stretched hollow-fiber porous membrane of vinylidene fluoride resin to at least two stages of relaxation treatment in a non-wetting environment.

Abstract translation: 提供一种中空纤维多孔膜，其包含中空纤维形式的偏氟乙烯树脂，并满足以下性质（A）和（B））作为平均孔径和另外的平均孔径的偏氟乙烯树脂的中空纤维多孔膜 均匀的孔径分布（A）和大的水渗透速率，而不管堵塞微小颗粒（细菌）（B）的良好效率，如下所示：（A）比值Pmax（1m）/ Pm在 根据泡点法测试的测试长度为1μm的最大孔径Pmax（1μm）和根据半干法测量的平均孔径Pm为0.05-0.20μm; 和（B）比例F（L = 200mm，v = 70％）/ PM2为至少3000（m / day.mum2），其中比率F（L = 200mm，v = 70％）/ Pm2表示 F（L = 200mm，v = 70％）之间的比率，其是在试验长度L = 200时测量的孔隙率v = 70％的渗透速率F（100kPa，L = 200mm）的归一化值 压力差为100kPa，水温为25℃的条件下为平均孔径Pm的平方Pm2。 中空纤维多孔膜通过以下方法制造，该方法包括：使偏氟乙烯树脂的拉伸中空纤维多孔膜在非润湿环境中进行至少两个阶段的松弛处理。

公开(公告)号：US07582353B2

公开(公告)日：2009-09-01

申请号：US11341329

申请日：2006-01-26

Applicant: Satoshi Hashimoto ,  Shingo Taniguchi ,  Yasuhiro Tada ,  Masayuki Hino ,  Masaru Satou ,  Takeo Takahashi

Inventor： Satoshi Hashimoto ,  Shingo Taniguchi ,  Yasuhiro Tada ,  Masayuki Hino ,  Masaru Satou ,  Takeo Takahashi

IPC: D01F6/00 ,  D01D5/34

CPC classification number: D01F6/32 ,  A01K91/00 ,  Y10T428/2913 ,  Y10T428/2929 ,  Y10T428/2931 ,  Y10T428/2933 ,  Y10T428/2967

Abstract: Monofilaments comprising resin compositions which contain 1% by mass or more of a comonomer component (for example, hexafluoropropylene), have an intrinsic viscosity of 1.3 dl/g or more and a melting point of 165° C. or higher and contain a PVDF-based resin. Owing to the above composition and physical properties, the crystallinity and elastic modulus of the PVDF-based resin are altered. As a result, an appropriate flexibility can be imparted to the monofilaments while preventing deterioration in the mechanical properties.

Abstract translation: 含有1质量％以上的共聚单体成分（例如六氟丙烯）的树脂组合物的单丝的特性粘度为1.3dl / g以上，熔点为165℃以上，含有PVDF- 基树脂。 由于上述组成和物理性质，改变了PVDF基树脂的结晶度和弹性模量。 结果，可以在防止机械性能劣化的同时赋予单丝适当的柔性。

公开(公告)号：US20120160764A1

公开(公告)日：2012-06-28

申请号：US13393628

申请日：2010-09-06

Applicant: Yasuhiro Tada ,  Takeo Takahashi

Inventor： Yasuhiro Tada ,  Takeo Takahashi

IPC: B01D71/34 ,  C02F1/44 ,  C08J9/26 ,  B01D69/08

CPC classification number: B01D71/34 ,  B01D67/002 ,  B01D67/0027 ,  B01D67/003 ,  B01D69/02 ,  B01D69/08 ,  B01D2323/20 ,  B01D2325/022 ,  B01D2325/24 ,  B29C48/08 ,  B29C48/914 ,  B29C48/918 ,  B29C48/919 ,  C02F1/44 ,  C02F3/1273 ,  D01D5/08 ,  D01D5/24 ,  D01F1/02 ,  D01F1/10 ,  D01F6/12 ,  Y02W10/15

Abstract: A porous membrane of vinylidene fluoride resin, comprising a substantially single layer membrane of vinylidene fluoride resin having two major surfaces sandwiching a certain thickness, including a dense layer that has a small pore size and governs a filtration performance on one major surface side thereof, having an asymmetrical gradient network structure wherein pore sizes continuously increase from the one major surface side to the other opposite major surface side, and satisfying conditions: (a) the dense layer includes a 5 μm-thick portion contiguous to the one major surface showing a porosity A1 of at least 60%, (b) the one major surface shows a pore size P1 of at most 0.30 μm, and (c) the porous membrane shows a ratio Q/P14 of at least 5×104 (m/day·μm4), wherein the ratio Q/P14 denotes a ratio between Q (m/day) which is a value normalized to a whole layer porosity A2=80% of a water permeation rate measured at a test length L=200 mm under the conditions of a pressure difference of 100 kPa and a water temperature of 25° C., and a fourth power P14 of the pore size P1 on the one major surface. The porous membrane is produced through a process including: extruding a melt-kneaded mixture of a vinylidene fluoride resin and a plasticizer through a die into a form of a film, followed by cooling, to form a solidified film; and extracting the plasticizer to recover a porous membrane; wherein the plasticizer is mutually soluble with the vinylidene fluoride resin at a temperature forming the melt-kneaded mixture and further satisfies properties: (i) giving the melt-kneaded mixture with the vinylidene fluoride resin with a crystallization temperature Tc′ (° C.) which is lower by at least 6° C. than a crystallization temperature Tc of the vinylidene fluoride alone, (ii) giving the cooled and solidified product of the melt-kneaded mixture a crystal melting enthalpy ΔH′ (J/g) of at least 53 J/g per weight of the vinylidene fluoride resin as measured by a differential scanning calorimeter (DSC), and (iii) the plasticizer alone showing a viscosity of 200 mPa-s-1000 Pa-s at a temperature of 25° C. as measured according to JIS K7117-2 (using a cone-plate-type rotational viscometer).

公开(公告)号：US20090301959A1

公开(公告)日：2009-12-10

申请号：US11992734

申请日：2006-09-15

Applicant: Yasuhiro Tada ,  Yasushi Ebihara ,  Masayuki Hino ,  Takafumi Kato ,  Toshiya Mizuno

Inventor： Yasuhiro Tada ,  Yasushi Ebihara ,  Masayuki Hino ,  Takafumi Kato ,  Toshiya Mizuno

IPC: B01D63/02 ,  B32B1/08 ,  B23P11/00

CPC classification number: B01D63/021 ,  B01D63/025 ,  B01D2313/08 ,  B01D2315/06 ,  Y10T29/49826 ,  Y10T428/13

Abstract: The object of the invention is to provide: a hollow fiber bundle, a method of manufacturing the hollow fiber bundle, a cylindrical module of hollow fiber membrane, and an immersion type module of hollow fiber membrane wherein the hollow fibers are easy to apply scrubbing while maintaining specified intervals among the hollow fibers. A hollow fiber bundle bundling porous hollow fibers, including; hollow fibers 10 that are open at one side end and closed at the other side end; and a closed side potting 60 and an open side potting 50 plate shaped at right angles to the hollow fibers for securing the hollow fibers, in which through holes 30 are disposed on a circumference, the hollow fibers are bundled in a cylindrical shape inside the through holes and disposed with a specified circumferential interval adjacent each other in a circumferential direction and with a specified radial interval adjacent each other in a radial direction, the hollow fibers are bundled outside the through holes disposed at specified peripheral intervals wherein the hollow fibers are disposed with a specified peripheral interval adjacent each other in a peripheral direction in the shape surrounding the outside of the through holes and with a specified peripheral right angle interval adjacent each other in a right angle to the periphery.

Abstract translation: 本发明的目的是提供：中空纤维束，中空纤维束的制造方法，中空纤维膜的圆筒状模块和中空纤维膜的浸渍型组件，其中中空纤维易于进行洗涤，同时 在中空纤维之间保持指定的间隔。 中空纤维束捆扎多孔中空纤维，包括： 在一侧端部开口并在另一侧端部封闭的中空纤维10; 以及与中空纤维成直角成形的封闭侧封装件60和开口侧封装件50，用于固定中空纤维，其中通孔30设置在圆周上，中空纤维在圆形状内部被捆成圆柱形 在圆周方向上彼此相邻并且沿径向相邻的规定的径向间隔配置有规定的周向间隔，将中空纤维捆扎在以规定的周期间隔设置的通孔的外侧，中空纤维配置有 围绕通孔外部的形状的圆周方向相邻的规定的周边间隔和与周边成直角相邻的规定的周边直角间隔。

公开(公告)号：US20090206035A1

公开(公告)日：2009-08-20

申请号：US11884371

申请日：2006-02-09

Applicant: Takeo Takahashi ,  Yasuhiro Tada ,  Kenichi Suzuki ,  Masayuki Hino ,  Shingo Taniguchi ,  Toshiya Mizuno

Inventor： Takeo Takahashi ,  Yasuhiro Tada ,  Kenichi Suzuki ,  Masayuki Hino ,  Shingo Taniguchi ,  Toshiya Mizuno

IPC: B01D71/34 ,  B01D69/08 ,  C02F1/44 ,  B29C47/06 ,  B01D67/00

CPC classification number: B01D69/02 ,  B01D67/0018 ,  B01D69/08 ,  B01D71/34 ,  B01D2323/20 ,  B01D2325/022 ,  B01D2325/24

Abstract: A hollow-fiber porous membrane, comprising a hollow fiber-form porous membrane in a network texture of vinylidene fluoride resin showing a pore size distribution in a direction of its membrane thickness including an outer surface-average pore size P1 as measured by a scanning electron microscope and a membrane layer-average pore size P2 as measured by half-dry method giving a ratio P1/P2 of at least 2.5. The hollow-fiber porous membrane is excellent in long-term water filtration performance including efficiency of regeneration by air scrubbing. The hollow-fiber porous membrane is produced through a process, wherein a mixture of vinylidene fluoride resin, a plasticizer and a good solvent for vinylidene fluoride resin, is melt-extruded in a hollow-fiber film and cooled and formed into a solidified film within a cooling medium containing at least a certain proportion of a good solvent for vinylidene fluoride resin.

Abstract translation: 一种中空纤维多孔膜，其包含在偏二氟乙烯树脂的网状结构中的中空纤维状多孔膜，其表现出通过扫描电子测量的包括外表面平均孔径P1的膜厚度方向上的孔径分布 显微镜和通过半干法测量的膜层平均孔径P2，其比值P1 / P2至少为2.5。 中空纤维多孔膜的长期水过滤性能优异，包括通过空气洗涤再生的效率。 中空纤维多孔膜通过以下方法制造，其中偏二氟乙烯树脂，增塑剂和偏二氟乙烯树脂的良溶剂的混合物在中空纤维膜中熔融挤出并冷却并形成固化膜 含有至少一定比例的偏二氟乙烯树脂的良溶剂的冷却介质。

公开(公告)号：US20090032455A1

公开(公告)日：2009-02-05

申请号：US12087080

申请日：2006-12-26

Applicant: Yasuhiro Tada ,  Masayuki Hino ,  Yasushi Ebihara ,  Toshiya Mizuno

Inventor： Yasuhiro Tada ,  Masayuki Hino ,  Yasushi Ebihara ,  Toshiya Mizuno

IPC: B01D27/08 ,  B29C67/20

CPC classification number: B01D63/023 ,  B01D63/021 ,  B01D2323/42

Abstract: An object of the present invention is to provide a potting agent that enables the reduction of crawling and ensures sufficient penetration between the porous hollow fibers in stationary potting. The potting agent of the present invention is a potting agent for fixing an end portion of a porous hollow fiber group composed of a plurality of porous hollow fibers, and contains a resin material and a filler. The content of the filler is equal to or less than the content of the filler at a rising point of a variation curve of viscosity of the potting agent to filler content.

Abstract translation: 本发明的目的是提供一种能够减少爬行并确保在固定灌封中的多孔中空纤维之间充分渗透的灌封剂。 本发明的灌封剂是用于固定由多根多孔中空纤维构成的多孔中空纤维团的端部的灌封剂，并且含有树脂材料和填料。 在灌封剂与填料含量的粘度变化曲线的上升点处，填料的含量等于或小于填料的含量。

公开(公告)号：US20070241050A1

公开(公告)日：2007-10-18

申请号：US11578425

申请日：2005-04-07

Applicant: Yasuhiro Tada ,  Takeo Takahashi ,  Masayuki Hino ,  Shingo Taniguchi ,  Kenichi Suzuki ,  Toshiya Mizuno

Inventor： Yasuhiro Tada ,  Takeo Takahashi ,  Masayuki Hino ,  Shingo Taniguchi ,  Kenichi Suzuki ,  Toshiya Mizuno

IPC: B01D63/02 ,  B01D63/06 ,  B29C47/00

CPC classification number: B01D71/34 ,  B01D67/0011 ,  B01D67/0018 ,  B01D67/0027 ,  B01D67/003 ,  B01D67/0088 ,  B01D69/02 ,  B01D69/08 ,  B01D2323/20 ,  B01D2323/48 ,  B01D2325/24 ,  B01D2325/32 ,  B01D2325/34 ,  D01D5/24 ,  D01F6/12

Abstract: A composition is formed by blending a vinylidene fluoride resin having a relatively high molecular weight and an improved crystallinity represented by a difference Tm2−Tc of at most 32° C. between an inherent melting point Tm2 and a crystallization temperature Tc of the resin with a plasticizer and a good solvent for vinylidene fluoride resin, and the composition is melt-extruded into a hollow fiber-form. The hollow fiber-form extrudate is then cooled to be solidified from an outside thereof by introduction into cooling medium and subjected to extraction of the plasticizer and stretching, thereby forming a hollow fiber porous membrane of vinylidene fluoride resin characterized by co-presence of crystal oriented portion and crystal non-oriented portion recognizable by X-ray diffraction method. The resultant hollow fiber porous membrane of vinylidene fluoride resin has micro-pores of appropriate size and distribution, is excellent in mechanical strength represented by tensile strength and elongation at break and is useful as a water microfiltration membrane.

Abstract translation: 通过将具有相对较高分子量和改进的结晶度的偏二氟乙烯树脂混合在一起，通过将不同Tm 2 -Tc表示为至多32℃的固有熔点Tm 2和树脂的结晶温度Tc之间的混合物形成组合物 用增塑剂和偏氟乙烯树脂的良溶剂，将组合物熔融挤出成中空纤维形式。 然后将中空纤维状挤出物从外部冷却，通过引入冷却介质中进行固化，并进行增塑剂的提取和拉伸，形成偏氟乙烯树脂的中空纤维多孔膜，其特征在于，以晶体取向共存 部分和晶体非取向部分可通过X射线衍射法识别。 得到的偏氟乙烯树脂中空纤维多孔膜具有适当尺寸和分布的微孔，机械强度优异，以拉伸强度和断裂伸长率为代表，可用作水微滤膜。