| 摘要 |
PROBLEM TO BE SOLVED: To provide a multi-layer tube which is suitable to tubing for water and hot-water supply with little expansion due to heat and high stiffness and without causing troubles due to thermal deformation. SOLUTION: This multi-layer tubing has at least two layers, and its immost layer consists of butene polymer composition. At least one of the layers other than the immost layer consists of (A) polyolefine resin 95-5 pts.wt., (B) filler 5-95 pts.wt., and (C) polyolefine resin composition which contains denaturation polyolefine resin of 0.1-10 pts.wt. to (A+B) 100 pts.wt. |
