| 摘要 |
<p>PURPOSE:To prevent the damage of a seal material at the time of lead-in and lead-out of a cable by laminating an inner layer material consisting of a mixed composition of a vinylidene fluoride resin and an acrylic resin on the inner circumferential surface of a pipe body consisting of a vinyl chloride resin. CONSTITUTION:On the inner circumferential surface of a vinyl chloride pipe 1, an inner layer material 2 consisting of a mixed composite of a vinylidene fluoride resin and an acrylic resin is laminated. The vinyl chloride pipe 1 is preferably formed of a hard vinyl chloride resin having heat resistance. The vinylidene fluoride resin may be a homopolymer, a copolymer, and a blend thereof. A vinylidene fluoride resin layer material may be laminated on the inner circumferential surface of the inner layer material 2. Consequently, the resulting cable has a low frictional resistance with a sealing material, and the generation of frictional heat at the time of lead-in and lead-out of the cable can be suppressed.</p> |
