Patent ID: 9222605
Filing Date: 2015-12-29
Classification: B29C,B29D,B29K,B29L,B64D,F16L,Y10T

Abstract:
1. A method for producing a ducting comprising the following sequential steps: A) fonning a thermoplastic or thermoplastic elastomeric inner layer by extrusion, with optional deposition of at least one intermediate layer on said inner layer, so as to obtain a blank with a geometry that is either rectilinear, curved and/or bent, then B) bag molding or drape-forming in situ a reinforcement directly onto said blank, which constitutes in this way a functional core for bag molding or drape-forming, to obtain a reinforced structure, then C) consolidating in situ said reinforcement in contact with said core by a thermosetting or thermoplastic matrix with the following successive sub-steps, only in the case where step B) is carried out on a blank with rectilinear geometry: D) curing and/or cooling said multilayer structure so as to obtain the curved and/or bent pipe with a composite reinforcing layer.