Method for production of composite belt composing of reinforced fibre and thermoplastic organics

Application Number: 00108636
Application Date: 2000.04.09
Publication Number: 1294965
Publication Date: 2001.05.16
Priority Information: 1999/10/20 FR 99/13067
International: B29C43/28;B32B5/02;B32B31/20
Applicant(s) Name: France Vett Rotex
Inventor(s) Name: J.-P. Debarmey;J. Varon;A. Zivydino
Patent Agency Code: 72001
Patent Agent: lin changan
Abstract Process for manufacturing a composite tape, consisting in bringing together and in consolidating a multiplicity of continuous yarns, characterized in that yarns based on a thermoplastic and on reinforcing fibres are entrained and brought together in a parallel manner in the form of a sheet which enters a zone in which it is heated to a temperature reaching at least the melting point of the thermoplastic and then passes through a rotating impregnation device in order to distribute the molten thermoplastic uniformly and guarantee that the reinforcing fibres are completely impregnated by the latter; next, the sheet is introduced into a shaping and centring device so as to obtain a tape formed by bringing the yarns together so as to be touching, thereby creating transverse continuity; the tape is cooled in order to consolidate the yarns by freezing the thermoplastic and its dimensional characteristics and its appearance are set in order to deliver the said composite tape.