Interior member for aircraft, manufacturing method of the same, and replacement method of the same

Patent metadata

Field	Value
Publication number	US-12168339-B2
Application number	US-201916759389-A
Country	US
Kind code	B2
Filing date	Jun 20, 2019
Priority date	Jun 29, 2018
Publication date	Dec 17, 2024
Grant date	Dec 17, 2024

Abstract

It is an object of the present disclosure to provide an interior member for an aircraft, a manufacturing method of the member and a replacement method of the member in which replacement cost can be reduced. An interior member for an aircraft according to the present disclosure includes a substrate, a decorative layer that covers the surface of the substrate, and an adhesive layer that adheres to the decorative layer to the substrate, and the decorative layer is peelably pasted to the surface of the substrate via the adhesive layer in a range that meets a required adhesive strength and that does not affect the substrate.

First claim

The invention claimed is:

1. An interior member for an aircraft, comprising:
a substrate including a honeycomb sandwich panel or a foam core sandwich panel and an intermediate layer that covers a surface of the honeycomb sandwich panel or a surface of the foam core sandwich panel,
a decorative layer that covers a surface of the substrate,
an adhesive layer that is arranged vertical stripes, horizontal stripes, wavy stripes, diagonal stripes, or dots and that adheres to the decorative layer to the substrate so as to meet a required adhesive strength, and
a peel layer that is disposed between the intermediate layer and the adhesive layer and that includes a release agent to decrease an adhesive force of the adhesive layer to the intermediate layer, wherein
the decorative layer is-pasted to the surface of the substrate via the adhesive layer, and the decorative layer pasted to the surface of the substrate is peelable by heating at a temperature lower than a heat-resistant temperature of the substrate,
the adhesive layer has a softening temperature lower than the heat-resistant temperature of the substrate, and does not include an unfoamed foaming agent and foam,
a resin forming the adhesive layer consists of a thermoplastic resin having an adhesive strength decreased by heating at a temperature lower than the heat-resistant temperature of the substrate, and
the intermediate layer is formed by a filler and has an uneven surface facing the adhesive layer.

2. The interior member for the aircraft according to claim 1 , wherein the adhesive layer comprises a thermoplastic resin having an adhesive strength that is required in the interior member for the aircraft and that allows the decorative layer to peel from the substrate by applying an external force causing no detrimental damage or deformation of the substrate and no damage of the honeycomb sandwich panel or the foam core sandwich panel, and no peeling in an adhesive layer and/or at adhesive interfaces including an intermediate layer adjacent to the substrate.

3. The interior member for the aircraft according to claim 1 , wherein the adhesive layer is scattered and arranged on the surface of the substrate.

4. A manufacturing method of interior member for the aircraft comprising a decorative material adhering, via an adhesive, to the surface of the substrate including the honeycomb sandwich panel or the foam core sandwich panel, the method according to claim 1 comprising:
using, as the adhesive, a resin that meets the adhesive strength required in the interior member for the aircraft, that has the softening temperature or a hardening temperature lower than the heat-resistant temperature of the substrate, and that allows the decorative layer to peel from the substrate by heating at a temperature equal to or higher than the softening temperature or the hardening temperature and lower than the heat-resistant temperature of the substrate or by external force application in a range, wherein the adhesive layer formed by hardening the resin does not include an unfoamed foaming agent and foam.

5. A replacement method of the interior member for the aircraft according to claim 1 , the method comprising:
peeling the decorative layer from the substrate by heating at a temperature equal to or higher than the softening temperature or the hardening temperature of the adhesive layer and lower than the heat-resistant temperature of the substrate or by external force application in a range,
removing the adhesive layer, and

then pasting a new decorative layer to the surface of the substrate via a new adhesive.

6. An interior member for an aircraft, comprising:
a substrate including a honeycomb sandwich panel in which a honeycomb core is sandwiched between face sheets or a foam core sandwich panel in which a foam core is sandwiched between face sheets and an intermediate layer that covers a surface of each face sheet of the honeycomb sandwich panel or a surface of each face sheet of the foam core sandwich panel,
a decorative layer that covers a surface of the substrate,
an adhesive layer that is arranged vertical stripes, horizontal stripes, wavy stripes, diagonal stripes, or dots and that adheres to the decorative layer to the substrate so as to meet a required adhesive strength, and
a peel layer that is disposed between the intermediate layer and the adhesive layer and that includes a release agent to decrease an adhesive force of the adhesive layer to the intermediate layer, wherein
the decorative layer is-pasted to the surface of the substrate via the adhesive layer, and the decorative layer pasted to the surface of the substrate is peelable by heating at a temperature lower than a heat-resistant temperature of the substrate,
the adhesive layer has a softening temperature lower than the heat-resistant temperature of the substrate, and does not include an unfoamed foaming agent and foam,
a resin forming the adhesive layer consists of a thermoplastic resin having an adhesive strength decreased by heating at a temperature lower than the heat-resistant temperature of the substrate, and
the intermediate layer is formed by a filler and has an uneven surface facing the adhesive layer.

Assignees

• Mitsubishi Heavy Ind Ltd

Inventors

• Hirai Makoto
• Taneda Hiroshi
• Kozasa Toshio
• Kanemasu Masayuki
• SAKURAGI Yukari
• Sakaki Kensuke
• Okada Kazuhiro

Classifications

• C09J2479/08

  polyimide · CPC title

• C09J2463/00

  Presence of epoxy resin · CPC title

• C09J179/08

  Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors · CPC title

• C09J163/00

  Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins · CPC title

• C09J9/00

  Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks (C09J7/00 takes precedence) · CPC title