| 摘要 |
<p>PURPOSE: To provide a multilayer cable in which no bump is formed even if an economical reproduced compound is used as an insulating material. CONSTITUTION: An innermost layer, an interlayer, and an outermost layer of insulating materials are successively formed on a conductor and the interlayer is formed by extrusion of a reproduced compound and the innermost layer and the outermost layer are formed by extrusion of a compound with good quality. In this cable structure, the middle density polyethylene (π= 0.935±0.05, MI=0.3) is used for the innermost layer and the outermost layer and polyethylene cross-linked with water (ρ= 0.930±0.05, MI=0.6) is used for the interlayer. The innermost layer and the outermost layer are formed by dividing extrusion from one extruder and thus the number of extruding apparatuses can be lessened.</p> |
