Process for the production of composite tubing particularly for air conditioning and tubing thus obtained

Abstract

A process for the production of composite tubing, particularly for air conditioning, from a structure of mineral or organic fibers, natural or artificial. The structure of fibers is impregnated with a suitable resin, and after shaping in or on a mold, the temperature and possibly the pressure is raised for polymerization of the resin, a sealing of the wall of the shaped piece being carried out in the course of this process. The structure of fibers is constituted by a single ply of a unit weight of at least about 400 g/m2, which ply is impregnated with resin at an impregnation quantity of at least 40%, then there is emplaced on one of the surfaces of the single ply a coating of a sealing agent. The polymerization is carried out while the single ply and its coating have the desired shape in or on the mold.

Dependencies are inferred from the claim text.