| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a fireproof multilayer pipe and its manufacturing method, having superior sound insulating properties and workability. <P>SOLUTION: (1) This fireproof multilayer pipe is composed of a synthetic resin pipe and a layer formed on an outer periphery of the synthetic resin pipe and composed of a thermal expandable fireproof material having sound insulating properties. (2) In this manufacturing method of the fireproof multilayer pipe mentioned in (1), the thermal expandable fireproof material having sound insulating properties is spirally wound on the synthetic resin pipe. (3) In this manufacturing method of the fireproof multilayer pipe mentioned in (1), the synthetic resin and the thermal expandable fireproof material having sound insulating properties are co-extruded to form the multilayer pipe shape. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
