公开(公告)号：US4863604A

公开(公告)日：1989-09-05

申请号：US10947

申请日：1987-02-05

申请人： Lawrence Y. Lo ,  Dwight J. Thomas

发明人： Lawrence Y. Lo ,  Dwight J. Thomas

IPC分类号： B01D67/00 ,  B01D69/12 ,  B01D71/32 ,  B01D71/36 ,  B32B5/14 ,  B32B5/32 ,  C08J9/26

CPC分类号： B01D71/36 ,  B01D67/003 ,  B01D69/02 ,  B01D69/12 ,  B01D71/32 ,  B01D2325/022

摘要： Novel microporous, asymmetric, integral, composite piolyfluorocarbon, e.g., polytetrafluoroethylene, membranes are disclosed. These membranes are made up of two or more sheets of microporous fluorocarbon polymer having different average pore sizes, arranged to provide an increasing gradations in average pore size from one surface of the membrane to the other, and are useful as microfilters for removing fine particle contaminants, including bacteria, from fluids such as those encountered in the electronics and pharmaceutical industries.

摘要翻译： 公开了新型微孔，不对称，整体复合聚氟碳化合物，例如聚四氟乙烯膜。 这些膜由两层或多层具有不同平均孔径的微孔碳氟化合物聚合物组成，排列成从膜的一个表面到另一个表面的平均孔径增加的梯度，并且可用作微滤器以除去细小颗粒污染物 ，包括细菌，来自流体，如在电子和制药行业遇到的那些。

公开(公告)号：US5154827A

公开(公告)日：1992-10-13

申请号：US468431

申请日：1990-01-22

申请人： Charles J. Ashelin ,  Dwight J. Thomas

发明人： Charles J. Ashelin ,  Dwight J. Thomas

IPC分类号： B01D63/06 ,  B01D67/00 ,  B01D69/12 ,  B01D71/32 ,  B01D71/36 ,  B29C43/24 ,  B29C43/30 ,  B32B5/32

CPC分类号： B32B5/32 ,  B01D63/061 ,  B01D63/067 ,  B01D67/003 ,  B01D69/12 ,  B01D71/32 ,  B01D71/36 ,  B29C43/24 ,  B29C43/30 ,  B01D2323/18 ,  B01D2325/023 ,  B01D2325/04 ,  B29K2027/12

摘要： Novel laminated, polyfluorocarbon microporous membranes are made up of three or more sheets of aggregated microporous fluorocarbon polymer. A fine porosity pore-containing microporous fluorocarbon polymer sheet has an average pore diameter of from about 0.01.mu.m to about 1.0.mu.m. This fine porosity sheet is laminated between a first sheet or sheets of larger porosity microporous fluorocarbon polymer and a second sheet or sheets of larger porosity microporous fluorocarbon polymer. At least one and preferably both of the first and second sheets has an average pore diameter of from about 1.0.mu.m to about 10.0.mu.m. A novel microporous polyfluorocarbon filter cartridge utilizing the membrane is also disclosed. A cartridge body formed of polyfluorocarbon has an inlet and outlet with a membrane assembly disposed in the cartridge so that fluid moving from the inlet to the outlet must pass therethrough. The membrane assembly includes a membrane of the type described above supported by a polyfluorocarbon mesh support secured in the cartridge body so as to support the membrane against pressure and fluid flow through the cartridge.

摘要翻译： 新型层压多氟碳微孔膜由三层或多层聚集微孔碳氟聚合物组成。 细孔孔隙微孔碳氟聚合物片材的平均孔径为约0.01μm〜约1.0μm。 这种细孔隙率片层压在第一片或更大孔隙率的多孔碳氟聚合物片和第二片或更大孔隙率的微孔碳氟聚合物片之间。 第一和第二片中的至少一个，优选两个平均孔径为约1.0μm至约10.0μm。 还公开了一种利用膜的新型微孔多氟碳过滤器滤芯。 由多氟碳化物形成的盒体具有入口和出口，其中膜组件设置在盒中，使得从入口移动到出口的流体必须通过其中。 膜组件包括上述类型的膜，其由固定在盒体中的多氟碳网状支撑体支撑，以便支撑膜抵抗压力和流体通过盒的流体。

公开(公告)号：US4678577A

公开(公告)日：1987-07-07

申请号：US769927

申请日：1985-08-27

申请人： Dwight J. Thomas ,  Charles J. Ashelin

发明人： Dwight J. Thomas ,  Charles J. Ashelin

IPC分类号： B01D27/00 ,  B01D27/08

CPC分类号： B01D27/005 ,  Y10S264/48

摘要： A cylindrical pressure vessel housing a filter media wherein the vessel is formed from a tubular thermoplastic pipe portion having opposite conical shaped end portions integrally formed with molded internal base portions with one base portion having integrally molded thereto the filter media in sealed position within the vessel housing.

摘要翻译： 容纳过滤介质的圆柱形压力容器，其中容器由管状热塑性管部分形成，该管状热塑管部分具有与模制的内部基部一体形成的相对的圆锥形端部，其中一个基部一体地模制在容器壳体内的密封位置的过滤介质 。

公开(公告)号：US4664801A

公开(公告)日：1987-05-12

申请号：US727290

申请日：1985-04-25

申请人： Dwight J. Thomas

发明人： Dwight J. Thomas

IPC分类号： B01D63/06 ,  B29C39/02 ,  B29C39/10 ,  B29C70/76 ,  B01D13/00

CPC分类号： B01D63/061 ,  B29C39/025 ,  B29C39/10 ,  B29C70/766 ,  B29K2105/0094 ,  B29K2105/243 ,  B29L2031/14

摘要： End capping a filter cartridge. The filter cartridge contains a hollow central core for passage of fluid, a membrane around the central core through which the fluid also passes, at least one support for the membrane in intimate contact with the membrane, a cage for holding the membrane and the support in contact with the central core, and an end cap for sealing the cartridge. This method comprises (a) allowing a first resin, such as polyurethane, to cure within the end cap until a viscosity of from about 200,000 to about 3,000,000 cps is achieved, (b) placing a second resin, which has a viscosity of from about 1,500 to about 20,000 cps, on top of the first resin such that an interface is formed between the resins, (c) placing the membrane, support, core, and cage to such a depth within said end cap that they penetrate within the second resin, (d) allowing the second resin to penetrate the capillaries of the membrane and support, (e) placing the membrane, support, core, and cage through the first resin prior to the gelation of the first resin, and (f) allowing the resins to completely cure and effectively seal the filter cartridge.

摘要翻译： 封闭滤芯。 过滤筒包含用于流体通过的中空中心芯，围绕中心芯的膜，流体还通过该膜，用于与膜紧密接触的膜的至少一个支撑体，用于将膜和支撑体保持在的保持架 与中心芯接触，以及用于密封盒的端盖。 该方法包括（a）允许第一树脂如聚氨酯在端盖内固化，直到实现约20万至约3,000,000cps的粘度，（b）放置第二树脂，其粘度为约 1500至约20,000cps，在第一树脂的顶部上，使得在树脂之间形成界面，（c）将膜，支撑体，芯和保持架放置在所述端盖内的深度，使其在第二树脂内渗透 （d）允许第二树脂穿透膜的毛细管并支撑，（e）在第一树脂凝胶化之前将膜，支撑体，芯和保持架穿过第一树脂，和（f）允许 树脂完全固化并有效地密封滤筒。