公开(公告)号：US4830062A

公开(公告)日：1989-05-16

申请号：US55072

申请日：1987-05-28

申请人： Katsutoshi Yamamoto ,  Norimasa Honda

发明人： Katsutoshi Yamamoto ,  Norimasa Honda

IPC分类号： B01D39/16 ,  B29C49/00 ,  B29C55/22 ,  B29C61/08 ,  B29C67/04 ,  B29C67/20 ,  B29K27/18 ,  B29K105/02 ,  B29K105/04 ,  C08J9/00 ,  C08J9/24 ,  F16L9/12 ,  F16L9/147 ,  F16L11/12

CPC分类号： F16L9/147 ,  B01D39/1692 ,  B29C49/0005 ,  B29C55/22 ,  B29C61/08 ,  B29C67/205 ,  F16L9/12 ,  B29K2027/18 ,  B29L2023/00

摘要： A tetrafluoroethylene polymer tube which is in a porous form composed of continuous pores and has heat-shrinkability in a radial direction or both radial direction and longitudinal direction of the tube, and a process for producing the same comprising applying pressure into inside of a tetrafluoroethylene polymer tube formed by paste extrusion molding a powder of the tetrafluoroethylene polymer and then sintered while heating the same to a temperature of not higher than the melting initiation temperature of the tetrafluoroethylene polymer to expand the tube to a radial direction only or both radial direction and longitudinal direction of the tube, and then cooling the tube in a pressurized state.

摘要翻译： 一种四氟乙烯聚合物管，其是由连续孔组成的多孔形式，并且在径向或径向和长度方向上具有热收缩性，以及其制造方法，包括向四氟乙烯聚合物 通过糊状物挤出成型四氟乙烯聚合物的粉末形成的管，然后在将其加热至不高于四氟乙烯聚合物的熔融起始温度的温度下进行烧结，以将管仅扩径到径向方向或径向方向 的管，然后在加压状态下冷却管。

公开(公告)号：US5562986A

公开(公告)日：1996-10-08

申请号：US347385

申请日：1995-01-05

申请人： Katsutoshi Yamamoto ,  Osamu Tanaka ,  Osamu Inoue ,  Toshio Kusumi ,  Shinichi Chaen ,  Jun Asano ,  Nobuki Uraoka

发明人： Katsutoshi Yamamoto ,  Osamu Tanaka ,  Osamu Inoue ,  Toshio Kusumi ,  Shinichi Chaen ,  Jun Asano ,  Nobuki Uraoka

IPC分类号： D01F6/12 ,  D04H1/42 ,  D02G3/00

CPC分类号： D01F6/12 ,  D04H1/04 ,  D04H1/4318 ,  D04H1/4391 ,  Y10T428/2913 ,  Y10T428/2973 ,  Y10T428/2976

摘要： Cotton-like polytetrafluoroethylene materials are obtained by opening a uniaxially stretched article of molded polytetrafluoroethylene by a mechanical force. Those cotton-like materials comprise the 5 to 150 mm long fibers having branches and crimps and non-uniform section. The cotton-like materials are excellent in intermingling property and can be easily made into non-woven fabrics.

摘要翻译： PCT No.PCT / JP94 / 00553 Sec。 371 1995年1月5日第 102（e）日期1995年1月5日PCT 1994年4月4日PCT PCT。 WO94 / 23098 PCT公开号 日期：1994年10月13日通过机械力打开聚四氟乙烯的单轴拉伸制品，得到类似聚四氟乙烯的材料。 这些棉质材料包括5至150mm长的纤维，其分枝和卷曲和不均匀的部分。 棉质材料的混合性优异，可以容易地制成无纺布。

公开(公告)号：US5409515A

公开(公告)日：1995-04-25

申请号：US117129

申请日：1993-09-14

申请人： Katsutoshi Yamamoto ,  Osamu Tanaka ,  Osamu Inoue ,  Toshio Kusumi ,  Shinichi Chaen ,  Jun Asano ,  Nobuki Uraoka

发明人： Katsutoshi Yamamoto ,  Osamu Tanaka ,  Osamu Inoue ,  Toshio Kusumi ,  Shinichi Chaen ,  Jun Asano ,  Nobuki Uraoka

IPC分类号： B01D39/16 ,  B01D46/00 ,  B01D46/24 ,  B01D63/02 ,  B01D63/06 ,  B01D69/10 ,  B01D71/36 ,  B01D29/21

CPC分类号： B01D46/2407 ,  B01D39/163 ,  B01D46/0001 ,  B01D46/0058 ,  B01D63/024 ,  B01D63/025 ,  B01D63/065 ,  B01D69/10 ,  B01D71/36 ,  B01D2239/0233 ,  B01D2239/0435 ,  B01D2239/065 ,  B01D2239/0654 ,  B01D2239/0681 ,  B01D2239/0695 ,  B01D2239/1216

摘要： A filter apparatus that is compact and that provides a large filtration area includes filter elements each constructed in cylindrical form by spirally winding a filter medium. Such medium includes a porous membrane of a polytetrafluoroethylene having a pore diameter of 0.1 to 5 .mu.m and low pressure loss and one or a pair of sheets composed of fibers made of a thermally melting synthetic resin. One end of the cylindrical filter element is connected to a respective through hole in a rigid support plate, and the opposite end is blocked.

摘要翻译： PCT No.PCT / JP93 / 00038 Sec。 371日期：1993年9月14日 102（e）1993年9月14日PCT 1993年1月13日PCT PCT。 第WO93 / 13849号公报 日期：1993年7月22日。一种紧凑且提供大过滤面积的过滤装置包括通过螺旋卷绕过滤介质而以圆筒形构成的过滤元件。 这种介质包括孔径为0.1〜5μm，低压损失的聚四氟乙烯的多孔膜和由热熔合成树脂制成的纤维构成的一片或多片。 圆柱形过滤元件的一端连接到刚性支撑板中的相应通孔，并且相对端被阻挡。

公开(公告)号：US5225131A

公开(公告)日：1993-07-06

申请号：US895156

申请日：1992-06-05

申请人： Shinji Tamaru ,  Katsutoshi Yamamoto ,  Osamu Tanaka ,  Hirofumi Nishibayashi ,  Osamu Inoue

发明人： Shinji Tamaru ,  Katsutoshi Yamamoto ,  Osamu Tanaka ,  Hirofumi Nishibayashi ,  Osamu Inoue

IPC分类号： B01D69/12 ,  B01D71/36 ,  B29C43/00 ,  B29C47/00 ,  B29C47/06 ,  B29C47/54 ,  B29C47/94 ,  B29C55/00 ,  B29C55/02 ,  B32B5/32

CPC分类号： B32B5/32 ,  B01D69/12 ,  B01D71/36 ,  B29C43/006 ,  B29C47/0004 ,  B29C47/0019 ,  B29C47/0021 ,  B29C47/065 ,  B29C47/145 ,  B29C47/54 ,  B29C47/94 ,  B29C55/005 ,  B29C55/023 ,  B29K2027/18

摘要： A process for producing a multilayer polytetrafluoroethylene porous membrane is disclosed, which process comprises at least two layers having different average pore diameters, the process comprising the steps of: filling the inside of a cylinder of an extruding mold distinctively with at least two kinds of polytetrafluoroethylene fine powders with each of which a liquid lubricant has been mixed; paste-extruding the powders to obtain a multilayer extrudate, which is then optionally rolled; removing the liquid lubricant from the multilayer extrudate or the rolled multilayer extrudate to obtain an unsintered multilayer structure; subsequently heating the unsintered multilayer structure at a temperature not lower than the melting point of sintered polytetrafluoroethylene to obtain a semisintered multilayer structure; and then stretching the semisintered multilayer structure at least monoaxially. A semisintered polytetrafluoroethylene multilayer structure capable of being used as an intermediate material for the above process is also disclosed.

摘要翻译： 公开了一种制造多层聚四氟乙烯多孔膜的方法，该方法包括至少两层具有不同平均孔径的方法，该方法包括以下步骤：用至少两种聚四氟乙烯填充挤出模具的圆筒内 各种液体润滑剂已经混合的细粉末; 糊状挤出粉末以获得多层挤出物，然后任选地卷起; 从多层挤出物或轧制的多层挤出物中除去液体润滑剂以获得未烧结的多层结构; 随后在不低于烧结聚四氟乙烯的熔点的温度下加热未烧结的多层结构，得到半烧结多层结构; 然后至少单轴拉伸半烧结多层结构。 还公开了可用作上述方法的中间材料的半烧结聚四氟乙烯多层结构。

公开(公告)号：US5217666A

公开(公告)日：1993-06-08

申请号：US889187

申请日：1992-05-28

申请人： Shinji Tamaru ,  Hirofumi Nishibayashi ,  Katsutoshi Yamamoto ,  Osamu Tanaka ,  Osamu Inoue

发明人： Shinji Tamaru ,  Hirofumi Nishibayashi ,  Katsutoshi Yamamoto ,  Osamu Tanaka ,  Osamu Inoue

IPC分类号： B01D67/00 ,  B01D69/12 ,  B01D71/36 ,  B29C41/00 ,  B29C55/00 ,  B29D7/01

CPC分类号： B29D7/01 ,  B01D67/0027 ,  B01D69/08 ,  B01D69/12 ,  B01D71/36 ,  B29C41/003 ,  B29C55/005 ,  C08J5/18 ,  B01D2325/02 ,  B01D2325/022 ,  B01D2325/04 ,  B29K2027/18 ,  B29K2105/04 ,  C08J2327/18

摘要： A porous PTFE film having a thin thickness and good permeability is produced by coating an emulsion of polytetrafluoroethylene on a substrate surface, in particular, a porous polytetrafluoroethylene substrate which has not been heated at a melting point of unsintered polytetrafluoroethylene or higher, heating the coated substrate at a temperature not lower than a melting point of sintered polytetrafluoroethylene to semi-sinter polytetrafluoroethylene, optionally removing the semi-sintered polytetrafluoroethylene film from the substrate, and then stretching the semi-sintered film at least in one direction.

公开(公告)号：USRE31341E

公开(公告)日：1983-08-09

申请号：US277391

申请日：1981-06-25

申请人： Shun Koizumi ,  Shigeru Ichiba ,  Tetsuo Shimizu ,  Chuzo Okuno ,  Tosinori Kadowaki ,  Katsutoshi Yamamoto

发明人： Shun Koizumi ,  Shigeru Ichiba ,  Tetsuo Shimizu ,  Chuzo Okuno ,  Tosinori Kadowaki ,  Katsutoshi Yamamoto

IPC分类号： C08F14/00 ,  C08F2/00 ,  C08F2/16 ,  C08F2/18 ,  C08F14/26 ,  C08F214/26 ,  C08J3/12

CPC分类号： C08F14/26

摘要： Polytetrafluoroethylene fine powders which have an average molecular weight of not less than 5,000,000, preferably not less than 5,500,000, an amorphous index of not more than 0.1, preferably not more than 0.09, a number average primary particle size of 0.1 to 0.4 micron, preferably 0.15 to 0.38 micron, and a sharp endothermic peak at a temperature between 343.degree. C. and 350.degree. C. on the melting diagram by a differential scanning calorimeter, said sharp peak having an endothermic ratio of not more than 0.3, preferably not more than 0.27, and a half value width of the endothermic peak of not more than 8 degrees, preferably not more than 6 degrees, and a process for producing the polytetrafluoroethylene fine powders. The polytetrafluoroethylene fine powders have an excellent stretchability and are useful for electric wire coating, small diameter tubes, large diameter tubes, sealing tapes and the like.

公开(公告)号：US07767035B2

公开(公告)日：2010-08-03

申请号：US11947886

申请日：2007-11-30

申请人： Namio Sato ,  Yotaro Toyoshima ,  Katsutoshi Yamamoto

发明人： Namio Sato ,  Yotaro Toyoshima ,  Katsutoshi Yamamoto

IPC分类号： H01F1/20

CPC分类号： H01F1/14791 ,  H01F27/255 ,  H01F37/00 ,  H01F41/0246

摘要： A metallic magnetic material for magnetic element for magnetic element of a choke coil and an SMD choke power coil for accommodating low voltage and high current in a personal computer, graphic card, high frequency power supply, etc, is prepared by baking a powder of Fe—Si—Al alloy sendust, obtained by an atomization process and having an average particle diameter of 10 to 70 μm, at 600° C. to 1000° C. in air or in an oxidizing atmosphere and mixing the baked sendust with 3 to 45 wt % of a carbonyl iron powder with an average particle diameter of 1 to 10 μm. The metallic magnetic material for magnetic element according to the present invention is used in a coil-embedded SMD power choke coil having a square or rectangular shape with a height of 1 mm to 7 mm and with a length of one side being 3 mm to 13 mm.

摘要翻译： 一种用于扼流线圈的磁性元件的磁性元件的金属磁性材料和用于在个人计算机，图形卡，高频电源等中容纳低电压和高电流的SMD扼流圈功率线圈，通过焙烧Fe -Si-Al合金硅酸盐，其在空气或氧化气氛中在600℃〜1000℃下通过雾化法得到，平均粒径为10〜70μm，并将焙烧的硅铝土与3〜45 重量％的平均粒径为1〜10μm的羰基铁粉末。 根据本发明的用于磁性元件的金属磁性材料用于具有1mm至7mm高度的正方形或矩形的线圈嵌入式SMD功率扼流线圈，并且一侧的长度为3mm至13 mm。

公开(公告)号：US06355135B1

公开(公告)日：2002-03-12

申请号：US08669840

申请日：1996-06-26

申请人： Osamu Inoue ,  Toshio Kusumi ,  Jun Asano ,  Katsutoshi Yamamoto ,  Osamu Tanaka ,  Shinichi Chaen ,  Nobuki Uraoka

发明人： Osamu Inoue ,  Toshio Kusumi ,  Jun Asano ,  Katsutoshi Yamamoto ,  Osamu Tanaka ,  Shinichi Chaen ,  Nobuki Uraoka

IPC分类号： C09J502

CPC分类号： B32B37/04 ,  B32B38/004 ,  Y10T428/249981

摘要： A method of laminating at least two gas permeable sheet materials includes: (1) providing at least a first gas permeable sheet material, wherein at least a portion of at least a surface region of the first sheet material is thermoplastic material; (2) providing at least a second gas permeable sheet material of polytetrafluoroethylene; (3) superposing the sheet materials; and (4) contacting the sheet materials with a heating means to heat the thermoplastic material to a temperature from 140° to 230° C., so as to melt the thermoplastic material and laminate the sheet materials to one another, without the application of direct pressure in the thickness direction of the sheet materials during the contacting step so as to form a gas permeable laminate.

摘要翻译： 层压至少两种透气性片材的方法包括：（1）提供至少第一透气片材料，其中第一片材材料的至少一个表面区域的至少一部分是热塑性材料; （2）提供聚四氟乙烯的至少第二透气性片材; （3）叠加片材; 和（4）使片材与加热装置接触以将热塑性材料加热至140℃至230℃的温度，以便熔化热塑性材料并将片材彼此层压，而不需要直接 在接触步骤期间片材的厚度方向上的压力以形成透气性层压体。

公开(公告)号：US06235388B1

公开(公告)日：2001-05-22

申请号：US09319582

申请日：1999-06-09

申请人： Katsutoshi Yamamoto ,  Jun Asano ,  Toshio Kusumi

发明人： Katsutoshi Yamamoto ,  Jun Asano ,  Toshio Kusumi

IPC分类号： D01F600

CPC分类号： D01F6/12 ,  D01F1/10 ,  D01F6/48 ,  Y10T428/29 ,  Y10T428/2913 ,  Y10T428/2915 ,  Y10T428/2976 ,  Y10T428/3154

摘要： A fibrous material of fluorine-containing resins such as polytetrafluoroethylene which has a high deodorizing antibacterial activity is obtained. A monofilament, staple fiber, split yarn or finished yarn thereof comprising a fluorine-containing resin such as polytetrafluoroethylene containing a photodegrading catalyst such as an anatase-type titanium dioxide in an amount of from 5 to 50% by weight, and a deodorizing antibacterial woven fabric, knitted fabric, and non-woven fabric which are produced by using the monofilament, staple fiber, split yarn or finished yarn thereof.

摘要翻译： 得到具有高除臭抗菌活性的含氟树脂如聚四氟乙烯的纤维材料。 包含含有5〜50重量％的锐钛矿型二氧化钛等光分解催化剂的聚四氟乙烯等含氟树脂的单丝，短纤维，分割纱或成品纱，以及除臭抗菌织物 织物，针织物和无纺织物，其通过使用单丝，短纤维，分裂纱或成品纱线制造。

公开(公告)号：US6156681A

公开(公告)日：2000-12-05

申请号：US101729

申请日：1998-07-16

申请人： Shinji Tamaru ,  Katsutoshi Yamamoto ,  Jun Asano

发明人： Shinji Tamaru ,  Katsutoshi Yamamoto ,  Jun Asano

IPC分类号： D06N7/04 ,  B01D39/08 ,  B01D39/16 ,  B32B5/06 ,  B32B5/26 ,  D04H13/00 ,  B32B5/16

CPC分类号： B01D39/083 ,  B01D39/086 ,  B32B5/26 ,  D04H1/4318 ,  D04H1/46 ,  D04H1/492 ,  D04H1/498 ,  B01D2239/0421 ,  B01D2239/0428 ,  B01D2239/0442 ,  B01D2239/0457 ,  B01D2239/0464 ,  B01D2239/0471 ,  B01D2239/0627 ,  B01D2239/064 ,  B01D2239/065 ,  B01D2239/0659 ,  B01D2239/069 ,  B01D2239/10 ,  B01D2239/1225 ,  B01D2239/1291 ,  Y10T428/2922 ,  Y10T428/2976 ,  Y10T442/659 ,  Y10T442/662 ,  Y10T442/663 ,  Y10T442/677 ,  Y10T442/681 ,  Y10T442/684 ,  Y10T442/686 ,  Y10T442/689

摘要： To provide various members such as filter cloth for dust collection which assures small pressure loss and easy shaking down of dust particles and is excellent in friction property and mechanical strength, sliding member excellent in sliding property, water repellent member excellent in water repellency, non-sticking member excellent in non-sticking property and member for supplying mold releasing agent in electrophotographic apparatuses which is excellent in air permeability, heat resistance and oil resistance, and provide a multilayered felt used therefor and a process for producing the multilayered felt. The multilayered felt is obtained by placing a layer of a web comprising polytetrafluoroethylene staple fibers on at least one surface of a felt and then joining the polytetrafluoroethylene staple fibers and fibers which form the felt by intermingling through water jet needling and/or needle punching.

摘要翻译： PCT No.PCT / JP97 / 00055 Sec。 371日期：1998年7月16日 102（e）日期1998年7月16日PCT 1997年1月13日PCT PCT。 公开号WO97 / 26135 日期1997年7月24日为了提供各种构件，例如用于集尘的滤布，其确保小的压力损失并且容易地粉碎颗粒，并且摩擦性能和机械强度优异，滑动性优异的滑动构件，优异的防水构件 防粘性，非粘着性优异的不粘附构件以及在透气性，耐热性和耐油性优异的电子照相设备中提供脱模剂的构件，以及提供用于其的多层毡以及多层制造方法 毡。 多层毡是通过在毛毡的至少一个表面上放置一层包含聚四氟乙烯短纤维的纤维网，然后通过水喷针刺和/或针刺混合形成毛毡的聚四氟乙烯短纤维和纤维来获得的。