发明名称 FIRE-RESISTANT COMPOSITE PIPE CAPABLE OF PREVENTING FALLING-OFF OF INNER PIPE
摘要 <p><P>PROBLEM TO BE SOLVED: To provide a fire-resistant composite pipe with a synthetic resin inner pipe being inserted in a fire-retardant or non-incombustible outer layer pipe and combined therewith, wherein the inner pipe does not easily fall off, the inner pipe is easily moved during the work, the portability and handling property are excellent, and the soundproof performance is excellent, and its manufacturing method. <P>SOLUTION: In the manufacturing method, in the fire-resistant composite pipe having an inner pipe made of a thermoplastic synthetic resin inside a fire-retardant or non-combustible outer pipe, an elastic packing layer is filled between the inner and outer pipes, and the vibration of the fire-resistant composite pipe is reduced by applying the pressure to the inner pipe by the packing layer by using the rigidity of the outer pipe. The fire-resistant composite pipe is manufactured by covering the outer side of the inner pipe having the packing layer of the outside diameter slightly larger than the inside diameter of the outer pipe and inserting in the outer pipe from the torpedo side into an insertion instrument having the torpedo of the diameter smaller than the inside diameter of the outer pipe on one end, and a cover capable of covering the packing layer on the other end. <P>COPYRIGHT: (C)2009,JPO&INPIT</p>
申请公布号 JP2009156278(A) 申请公布日期 2009.07.16
申请号 JP20070331738 申请日期 2007.12.25
申请人 SHOWA DENKO KENZAI KK 发明人 SEKIGUCHI TAKAFUMI;YAMAMOTO SHINJI;NAKAGAWA TERUAKI;ISHINO YUKIMASA
分类号 F16L9/14;B32B1/08;B32B3/06 主分类号 F16L9/14
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