PIPE AND PIPE JOINTING MEMBER HAVING SPECIAL RESIN LAYER CAPABLE OF REDUCING NOISE

摘要

PURPOSE: A pipe and a pipe jointing member are provided to simply shield noise by forming a special resin layer in the pipe and the pipe jointing member. CONSTITUTION: A special resin layer(10) is formed at an outer portion of a PVC layer(9) forming a linear pipe or an elbow type jointing pipe. The PVC layer(9) includes a polyolefin resin layer. The special resin layer(10) consists of PVC resin and a plasticizer so that the special resin layer(10) has a soft property with predetermined elasticity. Due to the soft and elastic property, the special resin layer(10) absorbs or shields vibration, thereby preventing noise from being transferred to an exterior. It is possible to control noise by adjusting thickness of the special resin layer(10). Calcium carbonate is added to the special resin layer(10).