Patent ID: 11951693
Assignee: ASCODERO PRODUCTIQUE
Field: Other special machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 16:
17. A method for manufacturing a composite panel implementing the panel reinforcement method according to its thickness according to claim 1, to achieve insertions of reinforcing elements into a panel, each reinforcing element being protruding from both sides of the panel, or else provided flush with both sides of the panel, or else protruding from one side of the panel and flush with the other side of the panel, and wherein two skins are added against both sides of the panel, the internal face of each skin facing the panel in contact with the protruding/flush part(s) of the reinforcing elements, wherein:
a resin is injected under vacuum impregnating the skins and the reinforcing elements within the panel, with creation of reinforcing bridges through the bores of the panels, each reinforcing bridge comprising a reinforcing element impregnated with resin, the composite panel being obtained, after polymerization of the resin, with two skins bonded by their internal face respectively to both sides of the panel, and the presence of reinforcing bridges in the form of the reinforcing element impregnated with resin joining the two skins together,
or
the reinforcing elements and the two skins comprise reinforcing fibers, and thermoplastic fibers and wherein the skin and panel assembly reinforced by the reinforcing elements is heated, until the thermoplastic fibers melt, the composite panel being obtained, after solidification by cooling the thermoplastic polymer, with two skins bonded by their internal face respectively to both sides of the panel, and the presence of reinforcing bridges in the form of the reinforcing fibers of the reinforcing elements impregnated with thermoplastic polymer joining the two skins together,
or
a resin is injected under a pressure greater than atmospheric pressure at the injection points in a mold, the injection pressure less than or equal to 3 bars, the mold maintained under vacuum between 0.2 and 0.3 bar below atmospheric pressure, the resin impregnating the skins and the reinforcing elements within the panel, with creation of reinforcing bridges through the bores of the panels, each reinforcing bridge comprising a reinforcing element impregnated with resin, the composite panel being obtained, after polymerization of the resin, with two skins bonded respectively to both sides of the panel, by their internal face, and the presence of reinforcing bridges in the form of the reinforcing element impregnated with resin joining the skins together.