Search

JP-7855813-B2 - Interior panels

JP7855813B2JP 7855813 B2JP7855813 B2JP 7855813B2JP-7855813-B2

Inventors

  • 梅岡 一哲
  • 新田 悠吉
  • 田中 恒也

Assignees

  • パナソニックハウジングソリューションズ株式会社

Dates

Publication Date
20260511
Application Date
20220628

Claims (6)

  1. An interior panel that is installed with its reverse side facing the interior substrate side, A surface layer is provided on the interior side of the foamed resin layer, which includes a fiber-reinforced resin layer, a flame-retardant layer provided on the interior side of the fiber-reinforced resin layer, and a decorative layer provided on the interior side of the flame-retardant layer. An interior panel characterized in that the end face and back surface of at least one end of the foamed resin layer, which are perpendicular to the interior side surface, are covered by an extended portion of the surface layer that extends in a continuous manner from the portion covering the interior side surface, and a bent groove is provided at the position corresponding to the interior corner of the end face of the one end of the foamed resin layer in the extended portion, where the fiber-reinforced resin layer is removed and the flame-retardant layer is exposed at the bottom of the groove.
  2. In claim 1, An interior panel characterized in that the width dimension of the groove bottom of the bent groove is 0.1 mm or more.
  3. In claim 2, The interior panel is characterized in that the bent groove is formed such that the bottom of the groove faces a part of the end face that is connected to the interior corner.
  4. In claim 1, An interior panel characterized in that a bent groove is provided at a position corresponding to the interior substrate side corner of the end face of one end of the extended portion, where the fiber-reinforced resin layer is removed and the flame-retardant layer is exposed at the bottom of the groove.
  5. In any one of claims 1 to 4, An interior panel characterized in that an adhesive resin for bonding the extended portion to the end face and the back surface is filled in the bending groove.
  6. In any one of claims 1 to 4, The interior panel is characterized by being a ceiling panel.

Description

This disclosure relates to interior panels that make up the ceilings, walls, and other structural elements of buildings. Traditionally, interior panels used for building ceilings and walls have sometimes required flame retardancy (non-combustibility). While some such interior panels have a lightweight, heat-insulating base material made of resin foam with a non-combustible or decorative layer on the interior side, there was a concern that the non-combustible performance would decrease if the base material was exposed at the edges. For example, Patent Document 1 discloses an interior panel in which the end face and back surface of one end of a foamed resin layer are covered by an extended portion of a surface layer including a fiber-reinforced resin layer, a flame-retardant layer, and a decorative layer, which extends in a continuous manner from a portion that covers the interior side surface. This interior panel is configured to have a bent groove at a position corresponding to the interior side corner of the end face of one end of the extended portion, with the groove bottom located within the fiber-reinforced resin layer. Japanese Patent Publication No. 2021-38514 This is a schematic, partially broken longitudinal cross-sectional view showing an example of an interior panel according to one embodiment of the present disclosure.(a) to (c) are schematic cross-sectional views with partial breaks illustrating an example of a manufacturing method for the interior panel, and (d) is a partially broken, enlarged cross-sectional view with partial breaks corresponding to the X1 portion in (c).(a) and (c) are schematic partially broken longitudinal section views illustrating an example of a manufacturing method for the interior panel, and (b) is a partially broken, enlarged longitudinal section view corresponding to section X2 in (a).(a) and (b) are schematic cross-sectional views with partial breaks illustrating an example of a manufacturing method for the interior panel, and (c) is a partially broken, enlarged cross-sectional view with partial breaks corresponding to section X3 in (b).(a) is a schematic partially broken longitudinal section view illustrating an example of the manufacturing method of the interior panel, and (b) is a partially broken schematic exploded plan view with a portion of the interior panel omitted.(a) is a schematic cross-sectional view with a partial break, illustrating an example of a manufacturing method for the interior panel, and (b) is a schematic plan view with a partial break, omitting a portion of the interior panel.Figures (a) to (d) schematically show a modified example of the interior panel, with (a) and (b) being partially broken schematic enlarged longitudinal cross-sectional views corresponding to Figure 3(b), and (c) and (d) being partially broken schematic enlarged longitudinal cross-sectional views corresponding to Figure 4(c), respectively. Embodiments of this disclosure will be described below with reference to the drawings. In some of the figures, some of the detailed symbols used in other figures have been omitted. In the following embodiments, directions such as the vertical direction will be explained based on the state in which a ceiling panel, as an example of an interior panel according to this embodiment, has been installed. Figures 1 to 7 schematically show an example and a modified example of an interior panel according to this embodiment, as well as an example of a method for manufacturing the interior panel. The interior panel according to this embodiment constitutes a ceiling panel 1, and as shown in Figure 1, it is installed with its back side facing the ceiling substrate 3, which serves as the interior substrate. This ceiling panel 1 comprises a foamed resin layer 20 that constitutes the panel core layer, and a surface layer 10 provided on the interior side of the foamed resin layer 20. With this configuration, it is possible to reduce the weight compared to wood-based boards or gypsum boards. The ceiling substrate 3 to which the ceiling panel 1 is fixed may be a wooden ceiling substrate or a steel ceiling substrate. Alternatively, the ceiling substrate 3 may be a so-called lightweight ceiling substrate made of light steel. In the illustrated example, the ceiling substrate 3 is shown as a channel-shaped steel joist. This ceiling substrate 3 may also be suspended via appropriate joist hangers, or suspension members such as hangers and bolts that suspend the joist hangers, to form a so-called suspended ceiling, and may be configured in various ways. This ceiling panel 1 may be installed as a ceiling in relatively small buildings such as residences and offices, or as a ceiling in various relatively large buildings such as gymnasiums, halls, shopping malls, factories, and schools. The ceiling panel 1 may have a mass of 2.0 kg or less per unit area (1 m² ). The mass of the ceiling panel 1 may be set such that the mass of the entire ceiling system, including the