Flame-resistant glass fiber cable for e.g. tunnels, with tensile armoring and plastic casing, has physical properties permitting blowing into thousand-meter corrugated ducting

摘要

Rigidity of the cable and smoothness of its plastic casing, are controlled in manufacture, such that it can be blown into corrugated tubing over a distance of at least 1000 m. The plastic casing has a glass transition point below 100[deg]C.