公开(公告)号：US20200223158A1

公开(公告)日：2020-07-16

申请号：US16738396

申请日：2020-01-09

Applicant: Airbus Operations S.A.S.

Inventor： Karl Simon ,  Florian Ravise ,  Denis Brossard ,  Florian Chotard

IPC: B29C70/30 ,  B29C70/54 ,  G10K11/162

Abstract: A method for producing an acoustically resistive structure includes the steps of creating, consolidating and cutting a first layer of reinforcing fibres embedded in a first thermoplastic resin having a first melting point so as to obtain an interlayer, a step of laying a second layer of reinforcing fibres against a first face of the interlayer, a second consolidation step of consolidating the second layer of reinforcing fibres embedded in a second thermoplastic resin having a second consolidation temperature lower than the first melting point of the first resin so as to obtain a non-perforated external layer bound to the interlayer, a step of perforating the external layer and a step of laying an internal layer on a second face of the interlayer. An acoustically resistive structure obtained from the method as well as a sound-absorption panel including such an acoustically resistive structure are also described.

公开(公告)号：US11325323B2

公开(公告)日：2022-05-10

申请号：US16738396

申请日：2020-01-09

Applicant: Airbus Operations S.A.S.

Inventor： Karl Simon ,  Florian Ravise ,  Denis Brossard ,  Florian Chotard

IPC: B29C70/30 ,  B29C70/54 ,  G10K11/162 ,  B29K71/00 ,  B29K79/00 ,  B29L31/30

Abstract: A method for producing an acoustically resistive structure includes the steps of creating, consolidating and cutting a first layer of reinforcing fibres embedded in a first thermoplastic resin having a first melting point so as to obtain an interlayer, a step of laying a second layer of reinforcing fibres against a first face of the interlayer, a second consolidation step of consolidating the second layer of reinforcing fibres embedded in a second thermoplastic resin having a second consolidation temperature lower than the first melting point of the first resin so as to obtain a non-perforated external layer bound to the interlayer, a step of perforating the external layer and a step of laying an internal layer on a second face of the interlayer. An acoustically resistive structure obtained from the method as well as a sound-absorption panel including such an acoustically resistive structure are also described.