公开(公告)号：WO1995016551A1

公开(公告)日：1995-06-22

申请号：PCT/GB1994002729

申请日：1994-12-14

Applicant: W.L. GORE & ASSOCIATES (UK) LTD. ,  ALLAN, Andrew, Miller ,  McCOLLAM, Francis, Michael, John

Inventor： W.L. GORE & ASSOCIATES (UK) LTD.

IPC: B29C41/08

CPC classification number: C08J9/24 ,  B29C33/42 ,  B29C41/08 ,  B29C59/025 ,  B29C67/04 ,  B29C67/205 ,  B29K2027/18 ,  B29K2105/04 ,  B29K2995/0075 ,  C08J2327/18 ,  G03G15/2025 ,  G03G2215/2093 ,  G03G2215/2096

Abstract: A porous polytetrafluorethylene (PTFE) structure suitable for use as an oil transfer component for coating or wiping a roll in a fuser system of a copying machine, has a fibrillated surface produced by casting a PTFE suspension onto a mesh and drying such that the PTFE engulfs at least some of the wires of the mesh. Removal of the PTFE sheet from the mesh results in a fibrillated irregular surface (72, 74). The PTFE structure is formed from particles of granular-type polytetrafluoroethylene fused together to form a porous integral network of interconnected particles.

Abstract translation: 适用于复印机的定影系统中用于涂布或擦拭辊的油转移组分的多孔聚四氟乙烯（PTFE）结构具有通过将PTFE悬浮液浇铸到网上并干燥而制成的原纤化表面，使得PTFE包覆 网格的至少一些线。 从网中去除PTFE片材导致原纤化的不规则表面（72,74）。 PTFE结构由颗粒状聚四氟乙烯的颗粒形成，熔融在一起形成互连颗粒的多孔整体网络。

公开(公告)号：WO1993015258A1

公开(公告)日：1993-08-05

申请号：PCT/GB1993000135

申请日：1993-01-22

Applicant: W.L. GORE ASSOCIATES (UK) LIMITED ,  McCOLLAM, Francis, Michael, John

Inventor： W.L. GORE ASSOCIATES (UK) LIMITED

IPC: D06P01/00

CPC classification number: B01D61/147 ,  B01D61/16 ,  D06P1/0008

Abstract: Residual reactive dye remaining in a salt-containing dye bath after use is removed by adsorption onto active carbon particles, and subsequent removal of the carbon by filtration. The presence of salt enhances the adsorption of dye onto the active carbon. Filtration may be carried out using a hollow fibre crossflow filter containing expanded porous polytetrafluoroethylene hollow fibres, or by back-pulse filtration.

公开(公告)号：WO1996040510A1

公开(公告)日：1996-12-19

申请号：PCT/GB1996001340

申请日：1996-06-06

Applicant: W.L. GORE & ASSOCIATES (UK) LTD. ,  McCOLLAM, Francis, Michael, John ,  CLOUGH, Norman, Ernest

Inventor： W.L. GORE & ASSOCIATES (UK) LTD.

IPC: B32B27/00

CPC classification number: B32B27/12 ,  B32B5/18 ,  B32B5/32 ,  B32B7/14 ,  B32B27/065 ,  B32B27/322 ,  B32B2262/0253 ,  B32B2266/025 ,  B32B2305/026 ,  B32B2305/80 ,  B32B2327/18 ,  C08J7/047 ,  C08J2327/18 ,  C08J2427/00 ,  G03G15/2025 ,  G03G2215/2093 ,  Y10T428/249972 ,  Y10T428/249981 ,  Y10T442/3325 ,  Y10T442/3528

Abstract: A porous composite laminate material comprises a layer (4) of expanded polytetrafluoroethylene (PTFE) membrane, and a layer (2) of non-expanded porous PTFE attached thereto. The non-expanded porous PTFE layer may be a sintered porous PTFE produced by sintering granular-type PTFE particles to form a porous integral network of interconnected particles; and may be produced in situ by spray application onto the membrane followed by baking. Modifiers including unsintered fine powder PTFE, thermoplastic fluorinated organic polymer, a low molecular weight PTFE and mixtures thereof may be included. The expanded PTFE membrane can be in sheet form or in the form of expanded PTFE fibres woven into a fabric. The laminate may be used for oiling and cleaning high temperature fuser rolls in a photocopying machine, or as a filter.

Abstract translation: 多孔复合层压材料包括膨胀聚四氟乙烯（PTFE）膜层（4）和附着在其上的非发泡多孔PTFE层（2）。 未膨胀多孔PTFE层可以是通过烧结颗粒状PTFE颗粒而形成的互连颗粒的多孔整体网络而制造的烧结多孔PTFE; 并且可以通过喷雾施加到膜上原位生产，随后烘烤。 可以包括包括未烧结的细粉末PTFE，热塑性氟化有机聚合物，低分子量PTFE及其混合物的改性剂。 膨胀的PTFE膜可以是片状或以编织成织物的PTFE纤维的形式。 层压板可用于在复印机中或作为过滤器上油和清洁高温定影辊。

公开(公告)号：WO1995020186A1

公开(公告)日：1995-07-27

申请号：PCT/GB1995000082

申请日：1995-01-17

Applicant: W.L. GORE & ASSOCIATES (UK) LTD. ,  PITCAIRN, Alistair ,  McCOLLAM, Francis, Michael, John

Inventor： W.L. GORE & ASSOCIATES (UK) LTD.

IPC: G03G15/20

CPC classification number: G03G15/2025 ,  G03G2215/2093 ,  G03G2215/2096

Abstract: An oil transfer component for transferring oil to a roll (2) in a fuser system of a copying machine, such as a plain paper copier or laser printer, is formed of contiguous layers (17a, 17b, 17c, etc.) of porous polytetrafluoroethylene sheet material. Typically, there are from three to twenty layers. The component may be formed by winding turns of a single length around a core (e.g. in the case of a roller (10)) or may be formed of separate sheets (32). The porous polytetrafluoroethylene may be formed from particles of granular-type polytetrafluoroethylene fused to form a porous integral network; or may be a porous expanded polytetrafluoroethylene. The oil transfer component is convenient to produce and has good oil delivery and toner wiping properties, and resists puddling of oil.

Abstract translation: 用于将油转移到诸如普通纸复印机或激光打印机的复印机的定影系统中的辊（2）的油转移部件由多孔聚四氟乙烯的邻接层（17a，17b，17c等）形成 片材。 通常，有三到二十层。 组件可以通过围绕芯部（例如在辊（10）的情况下）缠绕单个长度的匝而形成，或者可以由单独的片（32）形成。 多孔聚四氟乙烯可以由熔融形成多孔整体网络的粒状聚四氟乙烯颗粒形成; 或者可以是多孔膨胀聚四氟乙烯。 油转移组分方便生产，具有良好的输油和调色剂擦拭性能，并且抵抗油的搅拌。

公开(公告)号：WO1995002725A1

公开(公告)日：1995-01-26

申请号：PCT/GB1994001521

申请日：1994-07-14

Applicant: W.L. GORE & ASSOCIATES (UK) LTD. ,  McCOLLAM, Francis, Michael, John

Inventor： W.L. GORE & ASSOCIATES (UK) LTD.

IPC: D06P01/00

CPC classification number: C02F1/28 ,  B01D61/145 ,  B01D61/147 ,  B01D61/16 ,  B01D2311/04 ,  D06P1/0008

Abstract: A method of purifying a liquid stream (A) such as a dying effluent stream, by adsorption of impurities in the stream onto a solid particulate adsorbent, such as activated carbon, comprises the steps: (a) placing the liquid (A) to be purified in a vessel (T) in contact with the particulate adsorbent for a period sufficient to ensure substantially complete adsorption of impurities from the liquid onto the adsorbent; (b) passing the liquid (A) and the suspended particulate adsorbent through a cross-flow filter (F) including a membrane (18) at a rate to produce turbulent flow over the membrane (18); (c) removing a stream of purified filtrate (16), free of particulate adsorbent from the liquid (A) through the membrane (18); and (d) returning the remaining liquid and suspended particulate adsorbent to the vessel (T).

Abstract translation: 通过将流中的杂质吸附到固体颗粒吸附剂如活性炭上来纯化液体流（A）如染色流出物流的方法包括以下步骤：（a）将液体（A）置于 在与颗粒状吸附剂接触的容器（T）中纯化足以确保杂质从吸附剂上完全吸附杂质的时间; （b）使所述液体（A）和所述悬浮颗粒吸附剂通过包含膜（18）的交叉流过滤器（F），以便在膜（18）上产生紊流; （c）通过膜（18）从液体（A）中除去没有颗粒吸附剂的净化滤液流（16）; 和（d）将剩余的液体和悬浮颗粒吸附剂返回到容器（T）。