Porous composite
    6.
    发明授权
    Porous composite 失效
    多孔复合材料

    公开(公告)号:US6143675A

    公开(公告)日:2000-11-07

    申请号:US973945

    申请日:1998-07-23

    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: PCT No.PCT / GB96 / 01340 Sec。 371日期:1998年7月23日 102(e)1998年7月23日PCT PCT 1996年6月6日PCT公布。 出版物WO96 / 40510 PCT 日期1996年12月19日多孔复合层压材料包括膨胀聚四氟乙烯(PTFE)膜层(4)和附着在其上的未膨胀多孔PTFE层(2)。 未膨胀多孔PTFE层可以是通过烧结粒状PTFE颗粒而形成的互连颗粒的多孔整体网络制造的烧结多孔PTFE; 并且可以通过喷雾施加在膜上原位生产,然后烘烤。 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。

    PTFE fabric articles and methods of making same
    7.
    发明授权
    PTFE fabric articles and methods of making same 有权
    PTFE织物制品及其制造方法

    公开(公告)号:US08075993B2

    公开(公告)日:2011-12-13

    申请号:US12536766

    申请日:2009-08-06

    Abstract: Unique PTFE fabric and laminate structures, and methods for making the same, are described. Particularly, the invention comprises a laminate of a fabric comprising a plurality of PTFE fibers overlapping at intersections, wherein at least a portion of the intersections have PTFE masses extending from at least one of the overlapping PTFE fibers, and which lock the overlapping PTFE fibers together, bonded to a membrane by at least said PTFE masses. Such reinforced membranes exhibit exceptionally high bond strength, a particularly valuable attribute in applications in which durability is important.

    Abstract translation: 描述了独特的PTFE织物和层压结构及其制造方法。 特别地,本发明包括由相互交叉的多个PTFE纤维重叠的织物的层压体,其中交叉部分的至少一部分具有从重叠的PTFE纤维中的至少一个延伸的PTFE质量块,并且将重叠的PTFE纤维锁定在一起 通过至少所述PTFE质量块与膜结合。 这种增强膜表现出非常高的粘合强度,在耐久性很重要的应用中是特别有价值的属性。

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