| abstract |
Provided is a multilayer tube for delivering fuel, medical solution, or gas, which is mainly composed of a thermoplastic resin, especially, a polyamide resin. The multilayer tube has an inner layer of a conductive thermoplastic resin in which fine carbon fibers are blended as a conductivity applying material, and has an excellent moldability, resistance to fuel oil, and antistatic property. The multilayer tube has (a) an outer layer containing a thermoplastic resin and (b) at least two inner layers containing a conductive thermoplastic resin in which the surface resistivity is not more than 108O. In the conductive thermoplastic resin, a graphite mesh surface composed of only carbon atoms forms a bell-shaped structure unit having a closed top portion and a body portion with an open bottom. Two to thirty bell-shaped structure units are coaxially stacked to form an assembly. The assembly contains fine carbon fibers which are connected in a head-to-tail manner at intervals. |