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    • 43. 发明申请
    • PROCESS FOR PRODUCING MOLDED TETRAFLUOROETHYLENE POLYMER
    • 生产成型四氯氟乙烯聚合物的方法
    • WO99037458A1
    • 1999-07-29
    • PCT/JP1999/000172
    • 1999-01-20
    • B29C53/36B29C41/04B29C65/00B29C65/02B29K27/18B29L9/00B29L22/00B29L23/00B29C51/14
    • B29C65/02B29C41/04B29C66/1282B29C66/12841B29C66/4326B29C66/5344B29C66/53461B29C66/53462B29C66/542B29C66/543B29C66/65B29C66/71B29K2027/18B29L2031/246B29L2031/712B29L2031/7158
    • A process for producing a molded polytetrafluoroethylene polymer which comprises: disposing molded polytetrafluoroethylene polymer parts each having one or more areas where the parts are to be bonded to each other, along or near the inner wall of a mold; disposing a cylindrical molded polytetrafluoroethylene polymer part having an area where it is to be bonded to those molded parts, at a through hole formed in the mold; and heating the molded parts and the cylindrical molded part to a temperature not lower than the melting point of the polytetrafluoroethylene polymer while rotating the mold containing the molded parts and the cylindrical molded part to thereby bond all these parts at their bonding areas to form a united molded article having an outer shape conforming to the inner wall of the mold. Thus, a molded polytetrafluoroethylene polymer can be produced in which the parts have been evenly and tenaciously united with each other at the bonding areas, the inner surface has no projection or depression and is smooth, and the cylindrical projecting part has been tenaciously bonded to the main body of the molded article.
    • 一种聚四氟乙烯聚合物的制造方法,其特征在于,在模具的内壁或其附近,配置成型的聚四氟乙烯聚合物部件,所述聚四氟乙烯聚合物部件具有彼此接合的部分的一个或多个区域; 在形成在模具中的通孔处设置具有要与其结合的区域的圆柱形模制的聚四氟乙烯聚合物部分; 并将模制件和圆筒形模制件加热至不低于聚四氟乙烯聚合物熔点的温度,同时旋转包含模制件和圆筒形模制件的模具,从而将所有这些部件粘合在它们的粘合区域,以形成联合的 具有与模具的内壁一致的外形的成型品。 因此,可以制造成型的聚四氟乙烯聚合物,其中部件在接合区域彼此均匀且牢固地结合,内表面没有突出或凹陷,并且是平滑的,并且圆柱形突出部分已经坚固地结合到 成型品的主体。
    • 44. 发明申请
    • PIPE JOINT
    • 管接头
    • WO1997003811A1
    • 1997-02-06
    • PCT/GB1996001705
    • 1996-07-17
    • BI-ALPHA COMPANY LIMITEDKAYE, Alan
    • BI-ALPHA COMPANY LIMITED
    • B29C65/00
    • B29C66/5474B29C65/00B29C65/565B29C65/58B29C66/1142B29C66/54B29C66/54721B29C66/71B29L2031/243B29L2031/246F16B7/044B29K2077/00B29K2061/04B29K2027/06B29K2023/00
    • A method of making a pipe joint comprises providing a mould for forming substantially half the joint split longitudinally, moulding half the joint including strengthening webs, and assembling two halves so moulded to form the finished pipe joint. Moulding the joint in two complementary halves (12) enables strengthening webs (22) to be produced within the elbow, which is difficult or impossible with the conventional injection moulding technique. Since the webs can be designed to provide the strength where necessary, the thickness of the remainder of the elbow can be reduced, leading to an overall saving in weight and material. Moreover, by careful choice of the shape and positioning of the strengthening webs, a single mould is sufficient to produce both halves of the joint. By these means, savings of over 50 % on the cost of conventionally produced joints can be made.
    • 一种制造管接头的方法包括提供用于纵向形成大致一半的接合部分的模具,模制包括加强筋的接头的一半,以及组装两个如此模制以形成完成的管接头的两半。 在两个互补的半部(12)中模制接头使得能够在弯头内产生加强腹板(22),这对于常规的注射成型技术是困难的或不可能的。 由于腹板可以设计成在必要的地方提供强度,所以可以减少弯头的其余部分的厚度,从而总体上节省了重量和材料。 此外,通过仔细选择加强腹板的形状和定位,单个模具足以产生接头的两个部分。 通过这些方式,可以节省超过50%的常规生产接头的成本。