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    • 10. 发明公开
    • Multilayer fluid conduits
    • MehrschichtigeFlüssigkeitsleitungen
    • EP0771984A1
    • 1997-05-07
    • EP96117384.6
    • 1996-10-30
    • THE B.F. GOODRICH COMPANYCentral Sprinkler Company
    • Meyer, Steven J.Meyer, George G.Schiavone, Carmine L.Brannan, FredAuvil, Andrew L.Evans, Thomas L.Dalal, Girish TrikamalSchmitz, Theodore Joseph
    • F16L13/10F16L9/147F16L47/00
    • F16L47/02B29C47/0023B29C47/0033B29C47/021B29C47/065B29C47/28B29L2009/003B29L2023/22F16L9/147F16L13/103F16L47/24
    • Multilayer fluid conduits (10) are formed by adhering to a tubular outer surface (13) of a metal pipe (12), a thermoplastic outer layer (20). The outer layer (20) permits ends of the multilayer conduit (10) to be joined together in leakproof fluid conduit systems simply by adhering the conduit ends with compatible thermoplastic fittings. For fire protection systems, the preferred metal is steel, the preferred thermoplastic is CPVC and the preferred adhesive is heat activated. The adhesive coated metal pipe is preheated and the CPVC is extruded onto the outer surface of the heated metal pipe. Through the use of fire resistive CPVC, the multilayer conduit systems of the present invention can be installed in more severe fire threat areas than can existing, all plastic piping, including all CPVC piping systems. The conduit is assembled into systems on site simply by cutting and direct bonding with ordinary, all plastic fittings using appropriate bonding agents such as solvent based adhesives. CPVC fittings are preferred for fire protection systems.
    • 多层流体管道(10)通过粘附到金属管(12)的管状外表面(13),热塑性外层(20)而形成。 外层(20)允许多层导管(10)的端部通过将导管端部与相容的热塑性配件粘合在一起而在防漏流体导管系统中连接在一起。 对于防火系统,优选的金属是钢,优选的热塑性是CPVC,并且优选的粘合剂是热活化的。 将粘合剂涂覆的金属管预热,并将CPVC挤出到加热的金属管的外表面上。 通过使用耐火CPVC,本发明的多层管道系统可以安装在比现有的所有塑料管道(包括所有CPVC管道系统)更严格的防火区域。 通过使用适当的粘合剂(例如溶剂型粘合剂),通过使用普通的所有塑料配件切割和直接粘合,将导管组装到现场的系统中。 CPVC配件是防火系统的首选。