Manufacturing procedure of a piece of sandwich material and piece made following such a procedure

摘要

Method of manufacturing a piece of sandwich material comprising at least two sheets (2a, 2b) of a thermoplastic synthetic material separated by a core (3) of at least one layer of a reinforcing material, where the process comprises a first glueing stage of a first sheet (2a) and / or of a face of the core (3) of the reinforcement material, a first stage of positioning the core (3) of the reinforcement material on the first sheet (2a) placed on a mold (9), a second step of gluing the second sheet (2b) and / or of another face of the core (3) of the reinforcing material, a second stage of positioning the second sheet (2b) on the core ( 3) of the reinforcement material, and a stage of disassembly of the piece of sandwich material (1), a procedure characterized by the following steps: - the two sheets (2a, 2b) of reinforced thermoplastic material or not are made in advance by thermoforming and that have substantially the same profile l, - the flexible core (3) comprising at least one layer of a reinforcing material is prepared in advance, - in the first bonding stage, the first sheet (2a) is positioned on a mold (9) having a complementary form of the first sheet (2a), - after the second positioning stage, a determined effort is applied and distributed homogeneously over the second sheet (2b) to perform a mechanical deformation and a core formation (3) of the reinforcement material, - this effort is maintained until the polymerization of the glue, then the disassembly stage is carried out.