Patent ID: 7357968

Claim:
A tube for conveying at least one fluid, the tube comprising: at least one inner layer composed of a plastic material, the at least one inner layer having an outer surface; at least one reinforcement layer, the reinforcement layer including at least one reinforcement strip mechanically wrapped around the outer surface of the inner layer and bonded to the outer surface of the at least one inner layer; wherein the reinforcement layer comprises at least one elongated strip constructed of a woven fabric, the woven fabric containing at least one of highly oriented plastic fibers and metal foil, the at least one elongated strip further comprising at least one bonding material capable of forming a bond between the at least one inner layer and at least one face of the elongated strip; wherein the inner layer includes: an innermost fluid-contacting layer having an inwardly oriented fluid contacting face capable of prolonged exposure to the fluid transported through the tube, the innermost layer consisting essentially of an extrudable thermoplastic; at least one intermediate layer disposed radially outward from the innermost layer, the at least one intermediate layer capable of sufficiently permanent laminar adhesion with the inner layer; and at least one layer positioned radially outward of the intermediate layer, the at least one layer positioned radially outward of the intermediate layer containing at least one melt-processible thermoplastic polyamide.