WO2021085452A1 - Interior panel - Google Patents

Interior panel Download PDF

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Publication number
WO2021085452A1
WO2021085452A1 PCT/JP2020/040366 JP2020040366W WO2021085452A1 WO 2021085452 A1 WO2021085452 A1 WO 2021085452A1 JP 2020040366 W JP2020040366 W JP 2020040366W WO 2021085452 A1 WO2021085452 A1 WO 2021085452A1
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WO
WIPO (PCT)
Prior art keywords
resin layer
layer
back surface
flame
interior panel
Prior art date
Application number
PCT/JP2020/040366
Other languages
French (fr)
Japanese (ja)
Inventor
岡田　芳弘
恒也 田中
一哲 梅岡
悠吉 新田
Original Assignee
パナソニックＩｐマネジメント株式会社
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Publication date
Application filed by パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Publication of WO2021085452A1 publication Critical patent/WO2021085452A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/02—Layered products essentially comprising sheet glass, or glass, slag, or like fibres in the form of fibres or filaments
    • B32B17/04—Layered products essentially comprising sheet glass, or glass, slag, or like fibres in the form of fibres or filaments bonded with or embedded in a plastic substance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92—Protection against other undesired influences or dangers
    • E04B1/94—Protection against other undesired influences or dangers against fire
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/74—Removable non-load-bearing partitions; Partitions with a free upper edge
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
    • E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements

Definitions

  • the present invention relates to an interior panel constituting a ceiling or wall of a building.
  • the present invention has been made in view of the above circumstances, and an object of the present invention is to provide an interior panel which has flame retardancy and can improve the surface design while reducing the weight.
  • the interior panel according to the present invention is an interior panel constructed with the back surface side facing the interior base side, and is a metal flame-retardant layer provided on the indoor side of the foamed resin layer.
  • the interior panel according to the present invention has the above-mentioned structure, so that the surface design can be improved while having flame retardancy and reducing the weight.
  • FIGS. 1 and 2 are diagrams schematically showing an example of an interior panel according to the present embodiment and an example of a manufacturing method thereof.
  • the interior panel according to the present embodiment constitutes the ceiling panel 1, and as shown in FIG. 1, is constructed with the back surface side facing the ceiling base 3 side as the interior base.
  • the ceiling panel 1 includes a foamed resin layer 20 and a surface layer 10 provided on the indoor side of the foamed resin layer 20. With such a configuration, it is possible to reduce the weight as compared with a wood-based board or a gypsum board.
  • the ceiling base 3 to which the ceiling panel 1 is fixed may be a wooden ceiling base or a steel ceiling base. Further, the ceiling base 3 may be a so-called light ceiling base using a light iron material. In the illustrated example, an example is shown in which the ceiling base 3 is a so-called suspended ceiling in which the field edge 5 is suspended via a hanging member 4 such as a hanging tree or a hanging bolt, but various configurations are shown. It may be a thing.
  • the ceiling panel 1 may be fixed to the field edge 5 by a fixing tool such as a screw or a nail fixed to the field edge 5 so as to penetrate the side end portion 2. Further, the ceiling panel 1 is provided at the first end portion in one direction of the adjacent ceiling panel 1, and the hook portion provided at the second end portion in one direction is hooked on the hooked portion fixed to the field edge 5. It may be fixed. In this case, the end portion in the other direction may be fixed to the field edge 5 by a magnet. Further, in the illustrated example, an example is shown in which the ceiling panel 1 is constructed so that a watermark-like gap is formed between the end faces of the side end portions 2 and 2 facing each other in one direction of the adjacent ceiling panels 1 and 1. However, it is not limited to such an aspect.
  • the ceiling panel 1 may be constructed as the ceiling of a relatively small building such as a residence or an office, and may be used in various relatively large buildings such as a gymnasium, a hall, a shopping mall, a factory, or a school. It may be constructed as a ceiling. Further, the ceiling panel 1 may have a mass of 2.0 kg or less per unit area (1 m 2). Preferably, the ceiling panel 1 may have a mass of 1.0 kg or less per 1 m 2. With such a configuration, it is possible to reduce the weight of the entire ceiling system composed of the ceiling panel 1, the field edge 5, and the field edge receiver. For example, the mass of the entire ceiling system can be 2.0 kg / m 2 or less.
  • the mass of the ceiling panel 1 may be such that the mass of the entire ceiling system including the ceiling base 3 made of the light ceiling base as described above is 2.0 kg / m 2 or less.
  • the interior panel according to the present embodiment is not limited to the one that constitutes the ceiling panel 1, and may be the one that constitutes the wall panel.
  • the wall base such as studs and studs may be grasped as the interior base.
  • the ceiling panel 1 may have a substantially rectangular shape when viewed in a plan view (viewed in the thickness direction).
  • the ceiling panel 1 may have a substantially square shape in a plan view, or may have a substantially rectangular shape.
  • the size of the ceiling panel 1 in a plan view may be an appropriate size from the viewpoint of handleability, workability, etc.
  • the length of one side may be 0.3 m or more. It may be 2.0 m or less.
  • the length of the short side may be 0.3 m or more and the length of the long side may be 2.0 m or less.
  • the length of one side may be 0.6 m or more and 1.5 m or less, or about 0.9 m to 1.2 m. ..
  • the thickness of the ceiling panel 1 may be, for example, about 2.5 mm to 15.0 mm, preferably about 3.0 mm to 12.0 mm, and more preferably about 3.0 mm to 12.0 mm, although it depends on the layer structure and the like. May be about 3.0 mm to 6.0 mm.
  • the surface layer 10 is laminated with a metal flame-retardant layer 13 provided on the indoor side of the foamed resin layer 20 and on the indoor side of the flame-retardant layer 13 via an adhesive resin layer 12 containing a colorant.
  • a glass fiber sheet 11 having transparency that allows the color tone of the adhesive resin layer 12 to be visually recognized from the indoor side is provided. With such a configuration, flame retardancy on the indoor side can be improved.
  • the adhesive resin layer 12 containing the colorant can make the metal flame-retardant layer 13 inconspicuous, and the color tone of the adhesive resin layer 12 can be visually recognized through the glass fiber sheet 11. That is, the adhesive resin layer 12 visually recognized through the glass fiber sheet 11 functions as the finishing color of the surface of the ceiling panel 1.
  • the surface design can be improved without increasing the mass and the amount of heat generated, as compared with those requiring painting or the like on the surface or those to which a decorative sheet such as printing paper or veneer is attached. ..
  • the cost can be reduced, and the rigidity and flame retardancy can be improved.
  • the flame-retardant layer 13 is provided on the indoor side of the foamed resin layer 20 via the fiber-reinforced resin layer 14.
  • the fiber reinforced resin layer 14 functions as a reinforcing layer, and the bending rigidity and dimensional stability of the entire ceiling panel 1 can be improved. As a result, it is possible to effectively suppress sagging after construction while reducing the weight, which makes the ceiling panel 1 suitable.
  • the glass fiber sheet 11 is in the form of a thin sheet having a thickness of about 0.1 mm to 0.5 mm, and constitutes a decorative surface of the ceiling panel 1.
  • the glass fiber sheet 11 may have a basis weight of about 20 g / m 2 to 250 g / m 2 .
  • the glass fiber sheet 11 is a glass non-woven fabric (glass paper) having a basis weight of 20 g / m 2 to 100 g / m 2.
  • the basis weight of the glass fiber sheet 11 may be more preferably 30 g / m 2 to 75 g / m 2 .
  • the glass fiber sheet 11 may be a sheet in which short fiber-like glass fibers are bonded and integrated in a sheet shape by an appropriate resin-based binder by an appropriate papermaking method. Further, the glass fiber sheet 11 may be transparent, translucent, or white as long as the color tone of the adhesive resin layer 12 on the back surface side has a certain degree of transparency that can be visually recognized. ..
  • the flame-retardant layer 13 may be appropriately configured so that the ceiling panel 1 satisfies the technical standards for performance required for non-combustible materials and the like specified in the Building Standards Act.
  • the ceiling panel 1 may be configured to satisfy the standard of "flame-retardant material" in the technical standard, and preferably may be configured to satisfy the standard of "quasi-non-combustible material". More preferably, it may be configured to meet the criteria for "non-combustible material”.
  • the flame-retardant layer 13 may be, for example, a foil-shaped aluminum sheet in the form of a thin sheet.
  • the thickness of the aluminum sheet constituting the flame-retardant layer 13 may be about 5 ⁇ m to 50 ⁇ m, preferably about 7 ⁇ m to 40 ⁇ m, and more preferably about 10 ⁇ m to 30 ⁇ m.
  • the flame retardant layer 13 is not limited to the one having the above-mentioned configuration, and other various configurations can be adopted.
  • the main component of the adhesive resin layer 12 in which the glass fiber sheet 11 and the flame-retardant layer 13 are laminated and integrated is a polyethylene-based resin.
  • the polyethylene-based resin may be low-density polyethylene (LDPE).
  • the content of the colorant in the adhesive resin layer 12 may be 2 to 14% by mass. With such a configuration, effective coloring is possible as compared with the one in which the content of the colorant is too low, and it is more effective than the one in which the content of the colorant is too high. Adhesion is possible.
  • 80% by mass or more of the colorant may be an inorganic pigment. With such a configuration, concealment and flame retardancy can be improved as compared with those in which most of the colorants are composed of organic pigments and dyes. Further, all of the colorants contained in the adhesive resin layer 12 may be inorganic pigments.
  • the inorganic pigment contained in the adhesive resin layer 12 an appropriate one may be adopted so that the ceiling panel 1 has a desired surface finish color.
  • the inorganic pigment include titanium oxide, silica, zinc oxide, carbon black, iron oxide, antimony, chromium, umber, copper, manganese, cadmium yellow, cadmium red, ultramarine, etc.
  • the colorant contained in the adhesive resin layer 12 may be an organic pigment or a dye in addition to or in place of the inorganic pigment.
  • the color tone of the colorant contained in the adhesive resin layer 12 may be a light color such as white, ivory, beige, milky white, or gray, a dark color such as navy blue or black, and various other colors. But it may be.
  • the adhesive resin layer 12 is made white, it may contain a white pigment such as titanium oxide or silica.
  • the adhesive resin layer 12 is beige, it may contain a white pigment such as titanium oxide or silica and a brown pigment such as amber in an appropriate ratio.
  • the adhesive resin layer 12 is a resin containing transparent, translucent, transparent white resin pellets (virgin material) and a colorant (inorganic pigment) as described above at a relatively high content. It may be formed from a resin material containing pellets (master batch material).
  • the masterbatch material may contain a polyethylene-based resin as a resin main component and a colorant (inorganic pigment) at a content of about 30 to 70% by mass.
  • the content of the masterbatch material in the resin material containing the masterbatch material and the virgin material containing a polyethylene-based resin as a resin main component may be about 3 to 20% by mass.
  • a virgin material and a masterbatch material as described above are mixed and melted by heating to form a thin film, and a thin film is interposed between the flame retardant layer 13 and the glass fiber sheet 11. It may be solidified and formed.
  • the thickness of the adhesive resin layer 12 may be an appropriate thickness from the viewpoint of concealing the flame-retardant layer 13 and reducing the weight.
  • the thickness may be about 5 ⁇ m to 50 ⁇ m, preferably 10 ⁇ m to 30 ⁇ m. It may be about.
  • the colorant contained in the adhesive resin layer 12 is not limited to that contained in the masterbatch material mixed with the resin as described above to form pellets, and may be used as the main material constituting the adhesive resin layer 12. On the other hand, it may be in the form of powder or liquid to be added.
  • the resin main component constituting the adhesive resin layer 12 is not limited to the polyethylene-based resin, and may be another resin such as an acrylic resin or a urethane-based resin.
  • the adhesive resin layer 12 containing the colorant is not limited to the one having the above-mentioned structure, and may have various other structures.
  • the fiber reinforced resin layer 14 is a glass fiber reinforced resin layer containing glass fibers. Further, the fiber-reinforced resin layer 14 has the same resin main component as the resin main component of the foamed resin layer 20. With such a configuration, the compatibility in each layer is improved, and boundary peeling and the like can be prevented from occurring.
  • the reinforcing fiber sheet (glass fiber sheet) 15 constituting the fiber-reinforced resin layer 14 is a glass cloth having a grain size of 50 g / m 2 to 300 g / m 2. With such a configuration, it is possible to secure an appropriate flexural rigidity while reducing the weight.
  • the basis weight of the reinforcing fiber sheet 15 may be preferably 50 g / m 2 to 150 g / m 2 , and more preferably 50 g / m 2 to 100 g / m 2 .
  • Such a reinforcing fiber sheet 15 may be in the form of a thin sheet having a thickness of about 0.05 mm to 0.5 mm.
  • the reinforcing fiber sheet 15 is preferably a woven fabric made of glass fiber, and may be, for example, a glass cloth which is a woven fabric such as a plain weave or a leno weave woven by using glass roving for the warp and weft. By using a glass cloth, it is possible to prevent thermal deformation from occurring.
  • the reinforcing fiber sheet 15 is not limited to such a glass cloth, and may be a glass paper or a glass mat.
  • the fiber reinforced resin layer 14 is formed by impregnating the reinforced fiber sheet 15 with the resin composition constituting the foamed resin layer 20. That is, the fiber reinforced resin layer 14 is integrally provided on a part of the foamed resin layer 20. With such a configuration, boundary peeling and the like can be made less likely to occur as compared with a separately prepared sheet constituting the fiber reinforced resin layer laminated on the foamed resin layer 20. Moreover, the manufacturing efficiency can be improved.
  • the fiber-reinforced resin layer 14 may be configured to contain air bubbles by foaming the resin composition.
  • the reinforcing fiber sheet 15 is laminated and integrated with an appropriate adhesive on the ceiling base 3 side of the glass fiber sheet 11 and the flame retardant layer 13 which are laminated and integrated via the adhesive resin layer 12.
  • the front surface side composite sheet 10A may be laminated and integrated with the foamed resin layer 20 by the resin composition constituting the foamed resin layer 20.
  • the flame-retardant layer 13 may be at least partially adhered to the resin composition that has passed through the reinforcing fiber sheet 15 constituting the fiber-reinforced resin layer 14.
  • the adhesive for laminating and integrating the flame-retardant layer 13 and the reinforcing fiber sheet 15 may be an acrylic resin-based adhesive. Further, this adhesive may be applied to the reinforcing fiber sheet 15 so as to allow the resin composition constituting the fiber reinforcing resin layer 14 to seep out from the reinforcing fiber sheet 15. With such a configuration, peeling can be suppressed, wrinkles and the like are less likely to be formed, and manufacturing efficiency can be improved, as compared with the case where the flame-retardant layer 13 is laminated via an adhesive or the like. it can.
  • the ceiling panel 1 has a back surface side fiber reinforced resin layer 18 provided on the ceiling base 3 side which is the back surface side of the foamed resin layer 20, and a ceiling base 3 of the back surface side fiber reinforced resin layer 18.
  • a back surface layer 16 including a back surface side flame retardant layer 17 provided on the side is provided.
  • the fiber reinforced resin layer 14 is also provided on the indoor side. That is, the foamed resin layer 20 is sandwiched between the fiber reinforced resin layers 14 and 18 forming the reinforcing layers on both sides in the thickness direction. With such a configuration, flexural rigidity and dimensional stability can be improved more effectively.
  • the back surface side fiber reinforced resin layer 18 has the same resin main component and resin main component as the foamed resin layer 20 in substantially the same manner as the fiber reinforced resin layer 14 constituting the front surface layer 10 described above. Further, similarly to the above, the back surface side fiber reinforced resin layer 18 is formed by impregnating the same reinforced fiber sheet (glass fiber sheet) 19 as described above with the resin composition constituting the foamed resin layer 20.
  • the fiber-reinforced resin layer 18 on the back surface side may be configured to contain air bubbles by foaming the resin composition as described above.
  • the flame retardant layer 17 on the back surface side may be an aluminum sheet as in the flame retardant layer 13 described above.
  • the back surface side flame retardant layer 17 also functions as an exudation suppressing layer that suppresses exudation of the resin composition constituting the back surface side fiber reinforced resin layer 18. With such a configuration in which the flame retardant layer 17 on the back surface side is provided, the flame retardancy on the back surface side can be improved, and improvement in heat shielding property and electromagnetic wave shielding property can be expected.
  • the back surface side flame retardant layer 17 may be a sheet thinner than the flame retardant layer 13 described above. For example, the thickness of the flame-retardant layer 17 on the back surface side may be about 2/5 to 3/5 of the thickness of the flame-retardant layer 13.
  • the back surface side composite sheet in which the reinforcing fiber sheet 19 constituting the back surface side fiber reinforced resin layer 18 is laminated and integrated with the back surface side flame retardant layer 17 with an appropriate adhesive is the foamed resin layer 20.
  • the foamed resin layer 20 may be laminated and integrated with the resin composition constituting the above.
  • the flame retardant layer 17 on the back surface side may be at least partially adhered to the resin composition that has passed through the reinforcing fiber sheet 19 constituting the fiber reinforced resin layer 18 on the back surface side.
  • the resin composition constituting the foamed resin layer 20 was partially adhered to the flame retardant layer 17 on the back surface side so as to exude from the reinforcing fiber sheet 19 having a reduced basis weight and a large number of gaps. It may be a thing.
  • the adhesive for laminating and integrating the flame-retardant layer 17 on the back surface side and the reinforcing fiber sheet 19 may be an acrylic resin-based adhesive. Further, this adhesive may be applied to the reinforcing fiber sheet 19 so as to allow the resin composition constituting the back surface side fiber reinforcing resin layer 18 to seep out from the reinforcing fiber sheet 19.
  • the foamed resin layer 20 occupies most of the ceiling panel 1.
  • the thickness of the foamed resin layer 20 is preferably 80% to 99%, more preferably 85% to 95% of the thickness of the ceiling panel 1.
  • the thickness of the foamed resin layer 20 may be, for example, about 2.3 mm to 14.8 mm, preferably about 2.5 mm to 11.5 mm, and more preferably about 2.5 mm to 5.5 mm. It may be a degree.
  • the resin composition constituting the foamed resin layer 20 is a foamed polyurethane resin having a foaming ratio of 10 to 30 times. With such a configuration, weight reduction can be achieved.
  • one or both of the front surface layer 10 and the back surface layer 16 on both sides of the foamed resin layer 20 in the thickness direction are laminated and integrated with the foamed resin layer 20 by the resin composition constituting the foamed resin layer 20 as described above. It is possible to improve the manufacturing efficiency.
  • the expansion ratio of the resin composition constituting the foamed resin layer 20 is preferably about 15 to 25 times.
  • the resin composition constituting the foamed resin layer 20 is a flame-retardant polyurethane resin composition.
  • the flame retardancy non-flammability
  • the total calorific value can be reduced.
  • a flame-retardant polyurethane resin composition may be configured to include a polyisocyanate compound, a polyol compound, a catalyst, a foaming agent, a defoaming agent, and an additive.
  • such a flame-retardant polyurethane resin composition may further contain a flame retardant, a filler, and an inorganic filler.
  • a flame retardant examples include polyurethane resin, polystyrene resin, polyethylene resin, polypropylene resin, phenol resin, epoxy resin and the like.
  • the end surface 24 orthogonal to the indoor side surface 21 of at least one side end portion 23 of the foamed resin layer 20 and the back surface 22 orthogonal to the end surface 24 are from the portion covering the indoor side surface 21. It is covered with an extension portion 10b of the surface layer 10 extending in a series. With such a configuration, flame retardancy on the end surface and the back surface of at least one side end portion 2 of the ceiling panel 1 can be improved.
  • the end face 24 of the foamed resin layer 20 It is possible to delay the combustion from the end face of the ceiling panel 1 as compared with the exposed one. Further, as compared with the case where the end face 24 of the foamed resin layer 20 is exposed, it is possible to suppress moisture absorption from the end face of the ceiling panel 1. Further, since the fiber reinforced resin layer 14 is provided in a series on the end face and the back surface of the one side end portion 2, the bending rigidity at the one side end portion 2 can be improved.
  • the chamber is compared with, for example, a case where an edge sheet is attached to cover the end surface.
  • the appearance of the inner corner (edge) can be improved.
  • peeling of the surface layer 10 can be suppressed.
  • a fixing tool such as a screw is fastened to a portion where an extension portion 10b (end back surface layer 10d) is provided on the back surface of the one-side end portion 2, the stopper holding force is increased. It can also be improved.
  • the extension portion 10b covers the ceiling base 3 side of the back surface layer 16 of the one side end portion 2 provided up to the corner portion between the back surface 22 and the end surface 24 of the foamed resin layer 20. It has the configuration provided in. With such a configuration, the fiber reinforced resin layers 14 and 18 and the flame retardant layers 13 and 17 are provided in a plurality of layers on the back surface side of the one side end portion 2, so that the flexural rigidity of the one side end portion 2 is obtained. Can be improved more effectively.
  • the back surface layer 16 may be provided so as to cover the back surface 22 of the foamed resin layer 20 over the entire surface.
  • the extending portion 10b extends in a series from the indoor side surface layer 10a constituting the indoor side surface of the ceiling panel 1 and forming a portion covering the indoor side surface 21 of the foamed resin layer 20.
  • the extension portion 10b includes an end face layer 10c that covers the end surface 24 of the one side end portion 23 of the foamed resin layer 20, and an end back surface layer 10d that covers the ceiling base 3 side of the back surface layer 16 of the one side end portion 2. including.
  • the extension portion 10b including the end face layer 10c and the end back surface layer 10d as described above may be preferably provided at both side end portions 2 and 2 in one direction of the ceiling panel 1. With such a configuration, it is possible to improve the flame retardancy of the end faces of the side end portions 2 and 2 in one direction of the ceiling panel 1. Further, the ceiling panel 1 may be provided with an extension portion 10b including an end face layer 10c and an end back surface layer 10d on the side end portions 2, 2, 2, 2 on the four circumferences. With such a configuration, it is possible to improve the flame retardancy at the end faces of the side end portions 2, 2, 2, 2 of the four circumferences of the ceiling panel 1. Since each of the side end portions 2, 2, 2, and 2 has the same configuration, the details thereof will be described below by taking one side end portion 2 as an example.
  • the end surface of the side end portion 2 is orthogonal to the indoor side surface and the back surface of the ceiling panel 1.
  • the orthogonal shape is not limited to the one in which the angle formed by the end surface and the indoor side surface and the back surface is 90 degrees, and also includes, for example, the one having an angle of about 85 degrees to 95 degrees.
  • the angle formed by the end faces and the indoor side surface may be less than 90 degrees (for example, 85 degrees to 89 degrees). With such a configuration, it is possible to prevent a gap from being generated on the indoor side when the end faces of the adjacent ceiling panels 1 and 1 are brought into contact with each other for construction.
  • the end surface 24 of the side end portion 23 of the foamed resin layer 20 has the same orthogonal shape as the above with respect to the indoor side surface 21 and the back surface 22 of the foamed resin layer 20.
  • the extension portion 10b is formed so that the groove bottom is located in the fiber reinforced resin layer 14 at a position corresponding to the indoor side corner portion and the back surface side corner portion of the end surface 24 of the one side end portion 23 of the foamed resin layer 20. It may be bent at a portion where a bent groove is provided and attached to one side end portion 23.
  • the extension portion 10b may be composed of only the surface layer 10 including the fiber reinforced resin layer 14, but may be one in which a part of the foamed resin layer 20 is provided on the back surface side, or the fiber reinforced resin layer. A part of 14 may be excised. Further, the dimension (width dimension) along the extension direction of the end back surface layer 10d of the extension portion 10b is appropriately determined from the viewpoint of the strength of the side end portion 2, the viewpoint of suppressing peeling, the viewpoint of weight reduction, and the like. It may be the dimension of. For example, the width dimension of the end back surface layer 10d may be about 1 to 15 times, preferably about 2 to 10 times, the thickness dimension of the ceiling panel 1.
  • a concave step portion for receiving the end back surface layer 10d may be provided on the back surface side of the side end portion 2.
  • Such a concave step portion may be formed by cutting by cutting or the like, or may be formed by compression.
  • the overlap of the bent extension portions 10b is appropriately reduced at the corner portions.
  • a notch-shaped recess may be provided.
  • the ceiling panel 1 having the above-described structure is formed by supplying the resin composition constituting the foamed resin layer 20 to the surface-side composite sheet 10A constituting the surface layer 10. It may be.
  • the foamed resin layer 20 and the reinforcing fiber sheet 15 are shown as individual layers in FIG. 2, in reality, as described above, a part of the resin composition constituting the foamed resin layer 20 is a reinforcing fiber.
  • the sheet 15 is impregnated to form the fiber reinforced resin layer 14.
  • the front surface side composite sheet 10A may be one that is fed from a feeding portion such as a feeding roller that has been appropriately wound up toward a transporting portion such as a transport belt.
  • the width dimensions of the glass fiber sheet 11, the adhesive resin layer 12, the flame retardant layer 13, the reinforcing fiber sheet 15, and the foamed resin layer 20 constituting the surface side composite sheet 10A may be as follows.
  • the width dimension W3 of the flame-retardant layer 13 and the reinforcing fiber sheet 15 laminated and integrated by the adhesive is the same as each other, and the width dimension W2 of the adhesive resin layer 12 is the width dimension W3 of the flame-retardant layer 13 and the reinforcing fiber sheet 15. May be larger than. That is, the adhesive resin layer 12 may be present on both outer sides of the flame-retardant layer 13 and the reinforcing fiber sheet 15 in the width direction. Further, the width dimension W2 of the adhesive resin layer 12 may be set to be equal to or less than the width dimension W1 of the glass fiber sheet 11. That is, the adhesive resin layer 12 may be provided so as not to be exposed on both outer sides of the glass fiber sheet 11 in the width direction.
  • the width dimension W4 of the foamed resin layer 20 may be smaller than the width dimension W2 of the adhesive resin layer 12, and the width dimension W3 or more of the flame retardant layer 13 and the reinforcing fiber sheet 15 may be set. That is, the foamed resin layer 20 may be provided so as to cover the flame-retardant layer 13 and the reinforcing fiber sheet 15 as a whole and not to be exposed on both outer sides of the adhesive resin layer 12 in the width direction.
  • the resin composition constituting the foamed resin layer 20 is supplied (coated) to the surface side composite sheet 10A transported on the transport portion, the resin composition is the surface of the glass fiber sheet 11.
  • the adhesive resin layer 12 can suppress the exudation to the side. As a result, it is possible to suppress the appearance defect of the glass fiber sheet 11 which is the decorative surface, and it is possible to prevent the exuded resin composition from adhering to the transport portion. Further, while reducing the cost by setting the flame-retardant layer 13 and the reinforcing fiber sheet 15, which are relatively expensive, to the minimum width dimension W3, the adhesive resin layer 12 is adhered by increasing the width dimension W2.
  • the resin layer 12 can function as an exudation suppressing layer.
  • the back surface side composite sheet constituting the back surface layer 16 is arranged so as to cover the resin composition supplied in this way, and the resin composition is controlled while controlling the thickness. It may be foamed and molded. Similar to the above, the back surface side composite sheet may be unwound from the manipulating portion in an appropriate winding state toward the transporting portion. Further, the width dimensions of the back surface side flame retardant layer 17 and the reinforcing fiber sheet 19 laminated and integrated by the adhesive constituting the back surface side composite sheet may be the same as each other, and the foamed resin layer 20 may be the same. Width dimension W4 or more may be used.
  • the flame retardant layer 17 on the back surface side and the reinforcing fiber sheet 19 may be provided so as to cover the foamed resin layer 20 as a whole.
  • the extension portion 10b as described above may be formed at the four peripheral end portions and bent so as to be involved in forming the ceiling panel 1.
  • the fiber-reinforced resin layers 14 and 18 on both sides of the foamed resin layer 20 in the thickness direction are formed by impregnating the reinforcing fiber sheets 15 and 19 with the resin composition constituting the foamed resin layer 20.
  • the present invention is not limited to such an embodiment. Assuming that both or one of the fiber-reinforced resin layers 14 and 18 on both sides of the foamed resin layer 20 in the thickness direction is formed separately from the foamed resin layer 20 and laminated and integrated with an appropriate adhesive. May be good.
  • both or one of the flame-retardant layer 13 and the back-side flame-retardant layer 17 may be laminated and integrated with the fiber-reinforced resin layers 14 and 18 with an appropriate adhesive.
  • the back surface layer 16 including the back surface side fiber reinforced resin layer 18 and the back surface side flame retardant layer 17 is provided on the ceiling base 3 side of the foamed resin layer 20 is shown.
  • the reinforced resin layer 18 and the back surface side flame retardant layer 17 may not be provided or one of them.
  • the flame-retardant layer 13 is provided on the indoor side of the foamed resin layer 20 via the fiber-reinforced resin layer 14, but the fiber-reinforced resin layer 14 may not be provided.
  • the configuration of each of the above-mentioned parts of the ceiling panel 1 as the interior panel according to the present embodiment is merely an example, and various other modifications are possible.
  • Ceiling panel (interior panel) 11 Glass fiber sheet 12 Adhesive resin layer 13 Flame-retardant layer 14 Fiber-reinforced resin layer 16 Back-side layer 17 Back-side flame-retardant layer 18 Back-side fiber-reinforced resin layer 20 Foamed resin layer 3
  • Ceiling base (interior base)

Abstract

An interior panel 1 constructed so that a reverse-surface side is oriented toward an interior-foundation 3 side, the interior panel 1 comprising: a metal flame-retardant layer 13 provided to the indoor side of a foam resin layer 20; and a glass fiber sheet 11 layered on the indoor side of the flame-retardant layer with a colorant-containing adhesive resin layer 12 interposed therebetween, the glass fiber sheet being transparent and making it possible for the color tone of the adhesive resin layer to be visually confirmed from the indoor side.

Description

内装パネルInterior panel
　本発明は、建物の天井や壁などを構成する内装パネルに関する。 The present invention relates to an interior panel constituting a ceiling or wall of a building.
　従来より、建物の天井や壁を構成する内装パネルとしては、難燃性（不燃性）が求められる場合があった。このような内装パネルとしては、軽量化を図る観点から樹脂発泡体からなる断熱性基材の室内側面に、不燃層や化粧層を設けた構成とされたものがある。
　例えば、下記特許文献１には、樹脂発泡体からなる断熱性基材の一方の面に、ガラス繊維混抄紙層、金属層及び塗装等が施される内装側仕上面を構成する化粧層をこの順にそれぞれの間に接着層を介して積層した不燃積層材が開示されている。 Conventionally, flame-retardant (non-flammable) has been required for interior panels constituting the ceilings and walls of buildings. As such an interior panel, from the viewpoint of weight reduction, there is a configuration in which a non-combustible layer or a decorative layer is provided on the indoor side surface of a heat insulating base material made of a resin foam.
For example, in Patent Document 1 below, a decorative layer constituting an interior side finishing surface on which a glass fiber mixed papermaking layer, a metal layer, coating, etc. is applied to one surface of a heat insulating base material made of a resin foam. Non-combustible laminated materials laminated with an adhesive layer between them are disclosed in order.
特開２０１３－９９８６４号公報Japanese Unexamined Patent Publication No. 2013-99864
　しかしながら、上記特許文献１に記載された不燃積層材では、表面意匠を種々の色調にするためには化粧層に塗装等を施す必要があるため、質量や発熱量が増加する懸念がある。 However, in the non-combustible laminated material described in Patent Document 1, since it is necessary to paint the decorative layer or the like in order to give various color tones to the surface design, there is a concern that the mass and the amount of heat generated may increase.
　本発明は、上記実情に鑑みてなされたものであり、難燃性を有し、かつ軽量化を図りながらも、表面意匠性を向上し得る内装パネルを提供することを目的としている。 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an interior panel which has flame retardancy and can improve the surface design while reducing the weight.
　上記目的を達成するために、本発明に係る内装パネルは、裏面側を内装下地側に向けて施工される内装パネルであって、発泡樹脂層の室内側に設けられた金属製の難燃層と、この難燃層の室内側に、着色剤を含む接着樹脂層を介して積層され、この接着樹脂層の色調を室内側から視認可能な透過性を有したガラス繊維シートと、を備えていることを特徴とする。 In order to achieve the above object, the interior panel according to the present invention is an interior panel constructed with the back surface side facing the interior base side, and is a metal flame-retardant layer provided on the indoor side of the foamed resin layer. A glass fiber sheet that is laminated on the indoor side of the flame-retardant layer via an adhesive resin layer containing a colorant and has a transparency that allows the color tone of the adhesive resin layer to be visually recognized from the indoor side. It is characterized by being.
　本発明に係る内装パネルは、上述のような構成としたことで、難燃性を有し、かつ軽量化を図りながらも、表面意匠性を向上させることができる。 The interior panel according to the present invention has the above-mentioned structure, so that the surface design can be improved while having flame retardancy and reducing the weight.
本発明の一実施形態に係る内装パネルの一例を模式的に示す一部破断概略縦断面図である。It is a partial fracture schematic vertical cross-sectional view which shows typically an example of the interior panel which concerns on one Embodiment of this invention. 同内装パネルの製造方法の一例を模式的に示す一部破断概略縦断面図である。It is a partial fracture schematic vertical sectional view schematically showing an example of the manufacturing method of the interior panel.
　以下に本発明の実施の形態について、図面に基づいて説明する。
　なお、以下の実施形態では、本実施形態に係る内装パネルの一例としての天井パネルを施工した状態を基準として上下方向等の方向を説明する。
　図１及び図２は、本実施形態に係る内装パネルの一例及びこれの製造方法の一例を模式的に示す図である。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In the following embodiment, the vertical direction and the like will be described with reference to the state in which the ceiling panel is constructed as an example of the interior panel according to the present embodiment.
1 and 2 are diagrams schematically showing an example of an interior panel according to the present embodiment and an example of a manufacturing method thereof.
　本実施形態に係る内装パネルは、天井パネル１を構成し、図１に示すように、裏面側を内装下地としての天井下地３側に向けて施工される。この天井パネル１は、発泡樹脂層２０と、この発泡樹脂層２０の室内側に設けられた表面層１０と、を備えている。このような構成とすれば、木質系ボードや石膏ボードと比べて、軽量化を図ることができる。
　この天井パネル１が固定される天井下地３としては、木造天井下地でもよく、鋼製天井下地でもよい。また、天井下地３を、軽鉄材を用いたいわゆる軽天下地としてもよい。図例では、天井下地３を、吊木や吊ボルト等の吊部材４を介して野縁５を吊り下げた構成としたいわゆる吊天井とした例を示しているが、種々の構成とされたものでもよい。 The interior panel according to the present embodiment constitutes the ceiling panel 1, and as shown in FIG. 1, is constructed with the back surface side facing the ceiling base 3 side as the interior base. The ceiling panel 1 includes a foamed resin layer 20 and a surface layer 10 provided on the indoor side of the foamed resin layer 20. With such a configuration, it is possible to reduce the weight as compared with a wood-based board or a gypsum board.
The ceiling base 3 to which the ceiling panel 1 is fixed may be a wooden ceiling base or a steel ceiling base. Further, the ceiling base 3 may be a so-called light ceiling base using a light iron material. In the illustrated example, an example is shown in which the ceiling base 3 is a so-called suspended ceiling in which the field edge 5 is suspended via a hanging member 4 such as a hanging tree or a hanging bolt, but various configurations are shown. It may be a thing.
　この天井パネル１は、側端部２を貫通させるようにして野縁５に止着されたねじや釘等の固着具によって野縁５に固定されるものでもよい。また、天井パネル１は、隣接される天井パネル１の一方向第１端部に設けられ、野縁５に固定された被引掛部に、一方向第２端部に設けられた引掛部を引っ掛けて固定されるものでもよい。この場合、他方向端部が磁石によって野縁５に固定されるものでもよい。また、図例では、隣り合う天井パネル１，１の一方向に対向された側端部２，２の端面間に目透かし状の隙間が形成されるように天井パネル１を施工した例を示しているが、このような態様に限られない。 The ceiling panel 1 may be fixed to the field edge 5 by a fixing tool such as a screw or a nail fixed to the field edge 5 so as to penetrate the side end portion 2. Further, the ceiling panel 1 is provided at the first end portion in one direction of the adjacent ceiling panel 1, and the hook portion provided at the second end portion in one direction is hooked on the hooked portion fixed to the field edge 5. It may be fixed. In this case, the end portion in the other direction may be fixed to the field edge 5 by a magnet. Further, in the illustrated example, an example is shown in which the ceiling panel 1 is constructed so that a watermark-like gap is formed between the end faces of the side end portions 2 and 2 facing each other in one direction of the adjacent ceiling panels 1 and 1. However, it is not limited to such an aspect.
　また、この天井パネル１は、住居やオフィス等の比較的に小型の建物の天井として施工されるものでもよく、体育館やホール、ショッピングモール、工場、学校等の比較的に大型の各種の建物の天井として施工されるものでもよい。
　また、この天井パネル１は、単位面積（１ｍ２）当たりの質量が２．０ｋｇ以下とされたものでもよい。好ましくは、天井パネル１は、１ｍ２当たりの質量が１．０ｋｇ以下とされたものでもよい。このような構成とすれば、この天井パネル１と野縁５や野縁受とによって構成される天井システム全体の軽量化を図ることができる。例えば、天井システム全体の質量を２．０ｋｇ／ｍ２以下とすることもできる。換言すれば、この天井パネル１の質量を、上記のような軽天下地からなる天井下地３を含んだ天井システム全体の質量が２．０ｋｇ／ｍ２以下となるような質量としてもよい。なお、本実施形態に係る内装パネルとしては、天井パネル１を構成するものに限られず、壁パネルを構成するものでもよい。この場合は、間柱やスタッド等の壁下地を内装下地として把握するようにすればよい。 Further, the ceiling panel 1 may be constructed as the ceiling of a relatively small building such as a residence or an office, and may be used in various relatively large buildings such as a gymnasium, a hall, a shopping mall, a factory, or a school. It may be constructed as a ceiling.
Further, the ceiling panel 1 may have a mass of 2.0 kg or less per unit area (1 m 2). Preferably, the ceiling panel 1 may have a mass of 1.0 kg or less per 1 m 2. With such a configuration, it is possible to reduce the weight of the entire ceiling system composed of the ceiling panel 1, the field edge 5, and the field edge receiver. For example, the mass of the entire ceiling system can be 2.0 kg / m 2 or less. In other words, the mass of the ceiling panel 1 may be such that the mass of the entire ceiling system including the ceiling base 3 made of the light ceiling base as described above is 2.0 kg / m 2 or less. The interior panel according to the present embodiment is not limited to the one that constitutes the ceiling panel 1, and may be the one that constitutes the wall panel. In this case, the wall base such as studs and studs may be grasped as the interior base.
　この天井パネル１は、平面視して（厚さ方向に見て）、略方形状とされたものでもよい。この天井パネル１は、平面視して略正方形状とされたものでもよく、略長方形状とされたものでもよい。この天井パネル１の平面視した状態における大きさは、取扱性や施工性等の観点から適宜の大きさとしてもよく、例えば、１辺の長さが０．３ｍ以上とされたものでもよく、２．０ｍ以下とされたものでもよい。また、略長方形状とされた天井パネル１においては、短辺の長さが０．３ｍ以上で、長辺の長さが２．０ｍ以下とされたものでもよい。また、略正方形状とされた天井パネル１においては、１辺の長さが０．６ｍ以上、１．５ｍ以下とされたものでもよく、０．９ｍ～１．２ｍ程度とされたものでもよい。また、この天井パネル１の厚さは、層構成等にもよるが、例えば、２．５ｍｍ～１５．０ｍｍ程度としてもよく、好ましくは、３．０ｍｍ～１２．０ｍｍ程度としてもよく、より好ましくは、３．０ｍｍ～６．０ｍｍ程度としてもよい。 The ceiling panel 1 may have a substantially rectangular shape when viewed in a plan view (viewed in the thickness direction). The ceiling panel 1 may have a substantially square shape in a plan view, or may have a substantially rectangular shape. The size of the ceiling panel 1 in a plan view may be an appropriate size from the viewpoint of handleability, workability, etc. For example, the length of one side may be 0.3 m or more. It may be 2.0 m or less. Further, in the ceiling panel 1 having a substantially rectangular shape, the length of the short side may be 0.3 m or more and the length of the long side may be 2.0 m or less. Further, in the ceiling panel 1 having a substantially square shape, the length of one side may be 0.6 m or more and 1.5 m or less, or about 0.9 m to 1.2 m. .. The thickness of the ceiling panel 1 may be, for example, about 2.5 mm to 15.0 mm, preferably about 3.0 mm to 12.0 mm, and more preferably about 3.0 mm to 12.0 mm, although it depends on the layer structure and the like. May be about 3.0 mm to 6.0 mm.
　表面層１０は、発泡樹脂層２０の室内側に設けられた金属製の難燃層１３と、この難燃層１３の室内側に、着色剤を含む接着樹脂層１２を介して積層され、この接着樹脂層１２の色調を室内側から視認可能な透過性を有したガラス繊維シート１１と、を備えている。このような構成とすれば、室内側における難燃性を向上させることができる。また、着色剤を含む接着樹脂層１２によって金属製の難燃層１３を目立ち難くすることができ、また、ガラス繊維シート１１を透過して接着樹脂層１２の色調を視認できる。つまり、ガラス繊維シート１１を介して視認される接着樹脂層１２が当該天井パネル１表面の仕上色として機能する。これにより、表面に塗装等を施す必要があるものや、印刷紙や突板等の化粧シートを貼着したものと比べて、質量や発熱量を増加させることなく表面意匠性を向上させることができる。また、低コスト化を図ることもでき、さらに、剛性及び難燃性を向上させることができる。 The surface layer 10 is laminated with a metal flame-retardant layer 13 provided on the indoor side of the foamed resin layer 20 and on the indoor side of the flame-retardant layer 13 via an adhesive resin layer 12 containing a colorant. A glass fiber sheet 11 having transparency that allows the color tone of the adhesive resin layer 12 to be visually recognized from the indoor side is provided. With such a configuration, flame retardancy on the indoor side can be improved. Further, the adhesive resin layer 12 containing the colorant can make the metal flame-retardant layer 13 inconspicuous, and the color tone of the adhesive resin layer 12 can be visually recognized through the glass fiber sheet 11. That is, the adhesive resin layer 12 visually recognized through the glass fiber sheet 11 functions as the finishing color of the surface of the ceiling panel 1. As a result, the surface design can be improved without increasing the mass and the amount of heat generated, as compared with those requiring painting or the like on the surface or those to which a decorative sheet such as printing paper or veneer is attached. .. In addition, the cost can be reduced, and the rigidity and flame retardancy can be improved.
　本実施形態では、発泡樹脂層２０の室内側に、繊維強化樹脂層１４を介して難燃層１３を設けた構成としている。このような構成とすれば、繊維強化樹脂層１４が補強層として機能し、天井パネル１全体の曲げ剛性及び寸法安定性を向上させることができる。これにより、軽量化を図りながらも、施工後における垂れを効果的に抑制することができ、天井パネル１として好適なものとなる。 In the present embodiment, the flame-retardant layer 13 is provided on the indoor side of the foamed resin layer 20 via the fiber-reinforced resin layer 14. With such a configuration, the fiber reinforced resin layer 14 functions as a reinforcing layer, and the bending rigidity and dimensional stability of the entire ceiling panel 1 can be improved. As a result, it is possible to effectively suppress sagging after construction while reducing the weight, which makes the ceiling panel 1 suitable.
　ガラス繊維シート１１は、厚さが０．１ｍｍ～０．５ｍｍ程度の薄シート状とされ、当該天井パネル１の化粧面を構成する。このガラス繊維シート１１は、目付が２０ｇ／ｍ２～２５０ｇ／ｍ２程度とされたものでもよい。本実施形態では、このガラス繊維シート１１を、目付が２０ｇ／ｍ２～１００ｇ／ｍ２のガラス不織布（ガラスペーパー）としている。このような構成とすれば、目付を小さくし過ぎたものと比べて、適度な剛性を確保しながらも、目付を大きくし過ぎたものと比べて、接着樹脂層１２の色調の視認性を向上させることができ、また、軽量化を図ることができる。このガラス繊維シート１１の目付は、より好ましくは、３０ｇ／ｍ２～７５ｇ／ｍ２としてもよい。
　このガラス繊維シート１１は、適宜の抄造法によって短繊維状のガラス繊維が適宜の樹脂系結合剤によってシート状に結合一体化されたものでもよい。また、このガラス繊維シート１１は、裏面側の接着樹脂層１２の色調がある程度、視認可能な程度の透過性を有したものであればよく、透明や半透明、白色系とされたものでもよい。 The glass fiber sheet 11 is in the form of a thin sheet having a thickness of about 0.1 mm to 0.5 mm, and constitutes a decorative surface of the ceiling panel 1. The glass fiber sheet 11 may have a basis weight of about 20 g / m 2 to 250 g / m 2 . In the present embodiment, the glass fiber sheet 11 is a glass non-woven fabric (glass paper) having a basis weight of 20 g / m 2 to 100 g / m 2. With such a configuration, the visibility of the color tone of the adhesive resin layer 12 is improved as compared with the one having an excessively large basis weight while ensuring appropriate rigidity as compared with the one having an excessively small basis weight. It is possible to reduce the weight. The basis weight of the glass fiber sheet 11 may be more preferably 30 g / m 2 to 75 g / m 2 .
The glass fiber sheet 11 may be a sheet in which short fiber-like glass fibers are bonded and integrated in a sheet shape by an appropriate resin-based binder by an appropriate papermaking method. Further, the glass fiber sheet 11 may be transparent, translucent, or white as long as the color tone of the adhesive resin layer 12 on the back surface side has a certain degree of transparency that can be visually recognized. ..
　難燃層１３は、当該天井パネル１が建築基準法において定められた不燃材料等に必要な性能に関する技術的基準を満たすように適宜の構成とされたものでもよい。例えば、当該天井パネル１が技術的基準における「難燃材料」の基準を満たすように構成されたものでもよく、好ましくは、「準不燃材料」の基準を満たすように構成されたものでもよく、より好ましくは、「不燃材料」の基準を満たすように構成されたものでもよい。この難燃層１３としては、例えば、薄シート状とされた箔状のアルミシートでもよい。この難燃層１３を構成するアルミシートの厚さは、５μｍ～５０μｍ程度でもよく、好ましくは、７μｍ～４０μｍ程度でもよく、より好ましくは、１０μｍ～３０μｍ程度でもよい。
　なお、難燃層１３としては、上記のような構成とされたものに限られず、その他、種々の構成とされたものの採用が可能である。 The flame-retardant layer 13 may be appropriately configured so that the ceiling panel 1 satisfies the technical standards for performance required for non-combustible materials and the like specified in the Building Standards Act. For example, the ceiling panel 1 may be configured to satisfy the standard of "flame-retardant material" in the technical standard, and preferably may be configured to satisfy the standard of "quasi-non-combustible material". More preferably, it may be configured to meet the criteria for "non-combustible material". The flame-retardant layer 13 may be, for example, a foil-shaped aluminum sheet in the form of a thin sheet. The thickness of the aluminum sheet constituting the flame-retardant layer 13 may be about 5 μm to 50 μm, preferably about 7 μm to 40 μm, and more preferably about 10 μm to 30 μm.
The flame retardant layer 13 is not limited to the one having the above-mentioned configuration, and other various configurations can be adopted.
　これらガラス繊維シート１１と難燃層１３とを積層一体化する接着樹脂層１２は、本実施形態では、樹脂主成分がポリエチレン系樹脂とされている。このような構成とすれば、加工し易く低コスト化を図ることができる。また、ポリエチレン系樹脂としては、低密度ポリエチレン（ＬＤＰＥ）であってもよい。
　また、この接着樹脂層１２中における着色剤の含有率は、２～１４質量％であってもよい。このような構成とすれば、着色剤の含有率を低くし過ぎたものと比べて、効果的な着色が可能となり、また、着色剤の含有率を高くし過ぎたものと比べて、効果的な接着が可能となる。また、着色剤のうちの８０質量％以上が無機顔料であってもよい。このような構成とすれば、着色剤の多くを有機顔料や染料によって構成したものと比べて、隠蔽性及び難燃性を向上させることができる。また、接着樹脂層１２に含まれる着色剤の全てが無機顔料であってもよい。 In the present embodiment, the main component of the adhesive resin layer 12 in which the glass fiber sheet 11 and the flame-retardant layer 13 are laminated and integrated is a polyethylene-based resin. With such a configuration, it is easy to process and the cost can be reduced. Further, the polyethylene-based resin may be low-density polyethylene (LDPE).
Further, the content of the colorant in the adhesive resin layer 12 may be 2 to 14% by mass. With such a configuration, effective coloring is possible as compared with the one in which the content of the colorant is too low, and it is more effective than the one in which the content of the colorant is too high. Adhesion is possible. Moreover, 80% by mass or more of the colorant may be an inorganic pigment. With such a configuration, concealment and flame retardancy can be improved as compared with those in which most of the colorants are composed of organic pigments and dyes. Further, all of the colorants contained in the adhesive resin layer 12 may be inorganic pigments.
　この接着樹脂層１２に含まれる無機顔料としては、当該天井パネル１が所望する表面仕上色となるように適宜のものを採用するようにしてもよい。無機顔料としては、例えば、酸化チタンや、シリカ、酸化亜鉛、カーボンブラック、酸化鉄、アンチモン、クロム、アンバー、銅、マンガン、カドミウムイエロー、カドミウムレッド、ウルトラマリン等が挙げられるが、その他のものであってもよい。また、接着樹脂層１２に含まれる着色剤としては、無機顔料に加えて、または代えて、有機顔料や染料であってもよい。
　また、この接着樹脂層１２に含まれる着色剤の色調としては、白色やアイボリー、ベージュ、乳白色、グレー等の淡色でもよく、濃紺や黒等の濃色であってもよく、その他、種々の色でもよい。本実施形態では、天井パネル１の色として採用されることが多い淡色系としている。例えば、接着樹脂層１２を、白色にする場合には、酸化チタンやシリカ等の白色顔料が含有されたものでもよい。また、接着樹脂層１２を、ベージュにする場合には、酸化チタンやシリカ等の白色顔料とアンバー等の茶系の顔料とが適宜の割合で含有されたものでもよい。 As the inorganic pigment contained in the adhesive resin layer 12, an appropriate one may be adopted so that the ceiling panel 1 has a desired surface finish color. Examples of the inorganic pigment include titanium oxide, silica, zinc oxide, carbon black, iron oxide, antimony, chromium, umber, copper, manganese, cadmium yellow, cadmium red, ultramarine, etc. There may be. Further, the colorant contained in the adhesive resin layer 12 may be an organic pigment or a dye in addition to or in place of the inorganic pigment.
The color tone of the colorant contained in the adhesive resin layer 12 may be a light color such as white, ivory, beige, milky white, or gray, a dark color such as navy blue or black, and various other colors. But it may be. In the present embodiment, it is a light color system that is often adopted as the color of the ceiling panel 1. For example, when the adhesive resin layer 12 is made white, it may contain a white pigment such as titanium oxide or silica. When the adhesive resin layer 12 is beige, it may contain a white pigment such as titanium oxide or silica and a brown pigment such as amber in an appropriate ratio.
　また、接着樹脂層１２は、透明や半透明、透過性のある白色系の樹脂ペレット（バージン材）と、比較的に高含有率で上記のような着色剤（無機顔料）が含有された樹脂ペレット（マスターバッチ材）と、が配合された樹脂材料から形成されたものでもよい。この場合、例えば、マスターバッチ材は、ポリエチレン系樹脂を樹脂主成分とし、３０～７０質量％程度の含有率で着色剤（無機顔料）が含有されたものであってもよい。また、このマスターバッチ材とポリエチレン系樹脂を樹脂主成分とするバージン材とを含む樹脂材料中におけるマスターバッチ材の含有率は、３～２０質量％程度であってもよい。
　また、接着樹脂層１２は、上記のようなバージン材とマスターバッチ材とが混合され、加熱溶解されて薄い膜状とされたものが難燃層１３とガラス繊維シート１１との間に介在されて固化されて形成されたものでもよい。 The adhesive resin layer 12 is a resin containing transparent, translucent, transparent white resin pellets (virgin material) and a colorant (inorganic pigment) as described above at a relatively high content. It may be formed from a resin material containing pellets (master batch material). In this case, for example, the masterbatch material may contain a polyethylene-based resin as a resin main component and a colorant (inorganic pigment) at a content of about 30 to 70% by mass. Further, the content of the masterbatch material in the resin material containing the masterbatch material and the virgin material containing a polyethylene-based resin as a resin main component may be about 3 to 20% by mass.
Further, in the adhesive resin layer 12, a virgin material and a masterbatch material as described above are mixed and melted by heating to form a thin film, and a thin film is interposed between the flame retardant layer 13 and the glass fiber sheet 11. It may be solidified and formed.
　また、この接着樹脂層１２の厚さは、難燃層１３の隠蔽性や軽量化を図る観点等から適宜の厚さとしてもよく、例えば、５μｍ～５０μｍ程度でもよく、好ましくは、１０μｍ～３０μｍ程度でもよい。
　なお、接着樹脂層１２に含まれる着色剤としては、上記のような樹脂と混合されてペレット状とされたマスターバッチ材に含まれたものに限られず、接着樹脂層１２を構成する主材に対して添加される粉末状や液体状とされたものであってもよい。
　また、接着樹脂層１２を構成する樹脂主成分としては、ポリエチレン系樹脂に限られず、アクリル系樹脂やウレタン系樹脂等、他の樹脂としてもよい。また、着色剤を含む接着樹脂層１２としては、上記のような構成とされたものに限られず、その他、種々の構成とされたものでもよい。 The thickness of the adhesive resin layer 12 may be an appropriate thickness from the viewpoint of concealing the flame-retardant layer 13 and reducing the weight. For example, the thickness may be about 5 μm to 50 μm, preferably 10 μm to 30 μm. It may be about.
The colorant contained in the adhesive resin layer 12 is not limited to that contained in the masterbatch material mixed with the resin as described above to form pellets, and may be used as the main material constituting the adhesive resin layer 12. On the other hand, it may be in the form of powder or liquid to be added.
Further, the resin main component constituting the adhesive resin layer 12 is not limited to the polyethylene-based resin, and may be another resin such as an acrylic resin or a urethane-based resin. Further, the adhesive resin layer 12 containing the colorant is not limited to the one having the above-mentioned structure, and may have various other structures.
　繊維強化樹脂層１４は、本実施形態では、ガラス繊維を含むガラス繊維強化樹脂層とされている。また、この繊維強化樹脂層１４は、樹脂主成分が発泡樹脂層２０の樹脂主成分と同一とされている。このような構成とすれば、各層における馴染み性が良好となり、境界剥離等を生じ難くすることができる。
　この繊維強化樹脂層１４を構成する強化繊維シート（ガラス繊維シート）１５は、目付が５０ｇ／ｍ２～３００ｇ／ｍ２のガラスクロスとされている。このような構成とすれば、軽量化を図りながらも適度な曲げ剛性を確保することができる。この強化繊維シート１５の目付は、好ましくは、５０ｇ／ｍ２～１５０ｇ／ｍ２でもよく、より好ましくは、５０ｇ／ｍ２～１００ｇ／ｍ２でもよい。このような強化繊維シート１５としては、厚さが０．０５ｍｍ～０．５ｍｍ程度の薄シート状とされたものでもよい。また、この強化繊維シート１５としては、ガラス繊維の織布が好ましく、例えば、縦糸及び横糸にガラスロービングを用いて製織した平織、絡み織等の織物であるガラスクロスでもよい。ガラスクロスを用いることにより、熱変形を生じ難くすることができる。なお、強化繊維シート１５としては、このようなガラスクロスに限られず、ガラスペーパーやガラスマットでもよい。 In the present embodiment, the fiber reinforced resin layer 14 is a glass fiber reinforced resin layer containing glass fibers. Further, the fiber-reinforced resin layer 14 has the same resin main component as the resin main component of the foamed resin layer 20. With such a configuration, the compatibility in each layer is improved, and boundary peeling and the like can be prevented from occurring.
The reinforcing fiber sheet (glass fiber sheet) 15 constituting the fiber-reinforced resin layer 14 is a glass cloth having a grain size of 50 g / m 2 to 300 g / m 2. With such a configuration, it is possible to secure an appropriate flexural rigidity while reducing the weight. The basis weight of the reinforcing fiber sheet 15 may be preferably 50 g / m 2 to 150 g / m 2 , and more preferably 50 g / m 2 to 100 g / m 2 . Such a reinforcing fiber sheet 15 may be in the form of a thin sheet having a thickness of about 0.05 mm to 0.5 mm. Further, the reinforcing fiber sheet 15 is preferably a woven fabric made of glass fiber, and may be, for example, a glass cloth which is a woven fabric such as a plain weave or a leno weave woven by using glass roving for the warp and weft. By using a glass cloth, it is possible to prevent thermal deformation from occurring. The reinforcing fiber sheet 15 is not limited to such a glass cloth, and may be a glass paper or a glass mat.
　また、本実施形態では、繊維強化樹脂層１４は、強化繊維シート１５に発泡樹脂層２０を構成する樹脂組成物が含浸されて形成されている。つまり、発泡樹脂層２０の一部に繊維強化樹脂層１４を一体的に設けた構成としている。このような構成とすれば、別途に作成された繊維強化樹脂層を構成するシートを発泡樹脂層２０に積層したものと比べて、境界剥離等をより生じ難くすることができる。また、製造効率を向上させることができる。この繊維強化樹脂層１４は、上記樹脂組成物の発泡により気泡を含んだ構成とされたものでもよい。 Further, in the present embodiment, the fiber reinforced resin layer 14 is formed by impregnating the reinforced fiber sheet 15 with the resin composition constituting the foamed resin layer 20. That is, the fiber reinforced resin layer 14 is integrally provided on a part of the foamed resin layer 20. With such a configuration, boundary peeling and the like can be made less likely to occur as compared with a separately prepared sheet constituting the fiber reinforced resin layer laminated on the foamed resin layer 20. Moreover, the manufacturing efficiency can be improved. The fiber-reinforced resin layer 14 may be configured to contain air bubbles by foaming the resin composition.
　また、詳細には後述するが、接着樹脂層１２を介して積層一体化されたガラス繊維シート１１及び難燃層１３の天井下地３側に適宜の接着剤によって強化繊維シート１５が積層一体化された表面側複合シート１０Ａ（図２参照）が、発泡樹脂層２０を構成する樹脂組成物によって発泡樹脂層２０に積層一体化されたものでもよい。この場合、難燃層１３が繊維強化樹脂層１４を構成する強化繊維シート１５を通過した樹脂組成物に少なくとも部分的に接着されたものでもよい。つまり、上記のように目付が小さくされて目隙が多くなる強化繊維シート１５から発泡樹脂層２０を構成する樹脂組成物が染み出すようにして難燃層１３に部分的に接着されたものでもよい。また、難燃層１３と強化繊維シート１５とを積層一体化する接着剤は、アクリル樹脂系接着剤であってもよい。また、この接着剤は、繊維強化樹脂層１４を構成する樹脂組成物の強化繊維シート１５からの染み出しを許容するように強化繊維シート１５に塗布されたものでもよい。このような構成とすれば、接着剤等を介して難燃層１３を積層したものと比べて、剥離を抑制することができ、また、皺等が形成され難く、製造効率を向上させることができる。 Further, as will be described in detail later, the reinforcing fiber sheet 15 is laminated and integrated with an appropriate adhesive on the ceiling base 3 side of the glass fiber sheet 11 and the flame retardant layer 13 which are laminated and integrated via the adhesive resin layer 12. The front surface side composite sheet 10A (see FIG. 2) may be laminated and integrated with the foamed resin layer 20 by the resin composition constituting the foamed resin layer 20. In this case, the flame-retardant layer 13 may be at least partially adhered to the resin composition that has passed through the reinforcing fiber sheet 15 constituting the fiber-reinforced resin layer 14. That is, even if the resin composition constituting the foamed resin layer 20 is exuded from the reinforcing fiber sheet 15 having a reduced basis weight and a large number of gaps as described above, the resin composition is partially adhered to the flame retardant layer 13. Good. Further, the adhesive for laminating and integrating the flame-retardant layer 13 and the reinforcing fiber sheet 15 may be an acrylic resin-based adhesive. Further, this adhesive may be applied to the reinforcing fiber sheet 15 so as to allow the resin composition constituting the fiber reinforcing resin layer 14 to seep out from the reinforcing fiber sheet 15. With such a configuration, peeling can be suppressed, wrinkles and the like are less likely to be formed, and manufacturing efficiency can be improved, as compared with the case where the flame-retardant layer 13 is laminated via an adhesive or the like. it can.
　また、本実施形態では、天井パネル１は、発泡樹脂層２０の裏面側となる天井下地３側に設けられた裏面側繊維強化樹脂層１８と、この裏面側繊維強化樹脂層１８の天井下地３側に設けられた裏面側難燃層１７と、を含む裏面層１６を備えている。このような構成とすれば、難燃性、曲げ剛性及び寸法安定性を向上させることができる。また、本実施形態では、上述のように、室内側にも繊維強化樹脂層１４を設けた構成としている。つまり、発泡樹脂層２０を厚さ方向両側の補強層を構成する繊維強化樹脂層１４，１８によって挟んだような構成としている。このような構成とすれば、曲げ剛性及び寸法安定性をより効果的に向上させることができる。これにより、軽量化を図りながらも、施工後における垂れをより効果的に抑制することができ、天井パネル１としてより好適なものとなる。
　この裏面側繊維強化樹脂層１８は、上記した表面層１０を構成する繊維強化樹脂層１４と概ね同様、発泡樹脂層２０の樹脂主成分と樹脂主成分が同一とされている。また、上記同様、この裏面側繊維強化樹脂層１８は、上記同様な強化繊維シート（ガラス繊維シート）１９に発泡樹脂層２０を構成する樹脂組成物が含浸されて形成されている。この裏面側繊維強化樹脂層１８は、上記同様、上記樹脂組成物の発泡により気泡を含んだ構成とされたものでもよい。 Further, in the present embodiment, the ceiling panel 1 has a back surface side fiber reinforced resin layer 18 provided on the ceiling base 3 side which is the back surface side of the foamed resin layer 20, and a ceiling base 3 of the back surface side fiber reinforced resin layer 18. A back surface layer 16 including a back surface side flame retardant layer 17 provided on the side is provided. With such a configuration, flame retardancy, flexural rigidity and dimensional stability can be improved. Further, in the present embodiment, as described above, the fiber reinforced resin layer 14 is also provided on the indoor side. That is, the foamed resin layer 20 is sandwiched between the fiber reinforced resin layers 14 and 18 forming the reinforcing layers on both sides in the thickness direction. With such a configuration, flexural rigidity and dimensional stability can be improved more effectively. As a result, it is possible to more effectively suppress sagging after construction while reducing the weight, which makes the ceiling panel 1 more suitable.
The back surface side fiber reinforced resin layer 18 has the same resin main component and resin main component as the foamed resin layer 20 in substantially the same manner as the fiber reinforced resin layer 14 constituting the front surface layer 10 described above. Further, similarly to the above, the back surface side fiber reinforced resin layer 18 is formed by impregnating the same reinforced fiber sheet (glass fiber sheet) 19 as described above with the resin composition constituting the foamed resin layer 20. The fiber-reinforced resin layer 18 on the back surface side may be configured to contain air bubbles by foaming the resin composition as described above.
　裏面側難燃層１７は、上記した難燃層１３と同様、アルミシートでもよい。この裏面側難燃層１７は、裏面側繊維強化樹脂層１８を構成する樹脂組成物の滲出を抑制する滲出抑制層としても機能する。このような裏面側難燃層１７を設けた構成とすれば、裏面側の難燃性を向上させることができ、また、遮熱性や電磁波遮蔽性の向上も期待できる。
　この裏面側難燃層１７は、上記した難燃層１３よりも薄いシートとしてもよい。例えば、裏面側難燃層１７の厚さを、難燃層１３の厚さの２／５～３／５程度の厚さとしてもよい。
　また、上記と概ね同様、この裏面側難燃層１７に裏面側繊維強化樹脂層１８を構成する強化繊維シート１９が適宜の接着剤で積層一体化された裏面側複合シートが、発泡樹脂層２０を構成する樹脂組成物によって発泡樹脂層２０に積層一体化されたものでもよい。この場合、裏面側難燃層１７が裏面側繊維強化樹脂層１８を構成する強化繊維シート１９を通過した樹脂組成物に少なくとも部分的に接着されたものでもよい。つまり、上記のように目付が小さくされて目隙が多くなる強化繊維シート１９から発泡樹脂層２０を構成する樹脂組成物が染み出すようにして裏面側難燃層１７に部分的に接着されたものでもよい。また、裏面側難燃層１７と強化繊維シート１９とを積層一体化する接着剤は、アクリル樹脂系接着剤であってもよい。また、この接着剤は、裏面側繊維強化樹脂層１８を構成する樹脂組成物の強化繊維シート１９からの染み出しを許容するように強化繊維シート１９に塗布されたものでもよい。 The flame retardant layer 17 on the back surface side may be an aluminum sheet as in the flame retardant layer 13 described above. The back surface side flame retardant layer 17 also functions as an exudation suppressing layer that suppresses exudation of the resin composition constituting the back surface side fiber reinforced resin layer 18. With such a configuration in which the flame retardant layer 17 on the back surface side is provided, the flame retardancy on the back surface side can be improved, and improvement in heat shielding property and electromagnetic wave shielding property can be expected.
The back surface side flame retardant layer 17 may be a sheet thinner than the flame retardant layer 13 described above. For example, the thickness of the flame-retardant layer 17 on the back surface side may be about 2/5 to 3/5 of the thickness of the flame-retardant layer 13.
Further, substantially the same as above, the back surface side composite sheet in which the reinforcing fiber sheet 19 constituting the back surface side fiber reinforced resin layer 18 is laminated and integrated with the back surface side flame retardant layer 17 with an appropriate adhesive is the foamed resin layer 20. The foamed resin layer 20 may be laminated and integrated with the resin composition constituting the above. In this case, the flame retardant layer 17 on the back surface side may be at least partially adhered to the resin composition that has passed through the reinforcing fiber sheet 19 constituting the fiber reinforced resin layer 18 on the back surface side. That is, as described above, the resin composition constituting the foamed resin layer 20 was partially adhered to the flame retardant layer 17 on the back surface side so as to exude from the reinforcing fiber sheet 19 having a reduced basis weight and a large number of gaps. It may be a thing. Further, the adhesive for laminating and integrating the flame-retardant layer 17 on the back surface side and the reinforcing fiber sheet 19 may be an acrylic resin-based adhesive. Further, this adhesive may be applied to the reinforcing fiber sheet 19 so as to allow the resin composition constituting the back surface side fiber reinforcing resin layer 18 to seep out from the reinforcing fiber sheet 19.
　上記のような構成とすれば、接着剤等を介して裏面側難燃層１７を積層したものと比べて、剥離を抑制することができ、また、皺等が形成され難く、製造効率を向上させることができる。また、上記のように強化繊維シート１９の目付を小さくすれば、目隙が多くなり、成形する際に裏面側繊維強化樹脂層１８を構成する樹脂組成物が染み出して強化繊維シート１９が樹脂組成物層内に埋没することが考えられる。上記のように裏面側難燃層１７に強化繊維シート１９を積層一体化した構成とすれば、成形する際における強化繊維シート１９の埋没を抑制することができる。 With the above configuration, peeling can be suppressed, wrinkles and the like are less likely to be formed, and manufacturing efficiency is improved, as compared with the case where the flame retardant layer 17 on the back surface side is laminated via an adhesive or the like. Can be made to. Further, if the texture of the reinforcing fiber sheet 19 is reduced as described above, the gaps are increased, and the resin composition constituting the back surface side fiber reinforcing resin layer 18 exudes during molding, so that the reinforcing fiber sheet 19 is made of resin. It is conceivable to be buried in the composition layer. If the reinforcing fiber sheet 19 is laminated and integrated with the flame retardant layer 17 on the back surface side as described above, the burial of the reinforcing fiber sheet 19 at the time of molding can be suppressed.
　発泡樹脂層２０は、当該天井パネル１の大部分を占める。この発泡樹脂層２０の厚さは、天井パネル１の厚さの８０％～９９％であることが好ましく、８５％～９５％であることがより好ましい。この発泡樹脂層２０の厚さは、例えば、２．３ｍｍ～１４．８ｍｍ程度としてもよく、好ましくは、２．５ｍｍ～１１．５ｍｍ程度としてもよく、より好ましくは、２．５ｍｍ～５．５ｍｍ程度としてもよい。また、この発泡樹脂層２０を構成する樹脂組成物は、本実施形態では、発泡倍率が１０倍～３０倍の発泡ポリウレタン樹脂とされている。このような構成とすれば、軽量化を図ることができる。また、発泡樹脂層２０の厚さ方向両側の表面層１０及び裏面層１６のうちの一方または両方を、上記のように発泡樹脂層２０を構成する樹脂組成物によって発泡樹脂層２０に積層一体化することができ、製造効率を向上させることができる。この発泡樹脂層２０を構成する樹脂組成物の発泡倍率は、好ましくは、１５倍～２５倍程度でもよい。 The foamed resin layer 20 occupies most of the ceiling panel 1. The thickness of the foamed resin layer 20 is preferably 80% to 99%, more preferably 85% to 95% of the thickness of the ceiling panel 1. The thickness of the foamed resin layer 20 may be, for example, about 2.3 mm to 14.8 mm, preferably about 2.5 mm to 11.5 mm, and more preferably about 2.5 mm to 5.5 mm. It may be a degree. Further, in the present embodiment, the resin composition constituting the foamed resin layer 20 is a foamed polyurethane resin having a foaming ratio of 10 to 30 times. With such a configuration, weight reduction can be achieved. Further, one or both of the front surface layer 10 and the back surface layer 16 on both sides of the foamed resin layer 20 in the thickness direction are laminated and integrated with the foamed resin layer 20 by the resin composition constituting the foamed resin layer 20 as described above. It is possible to improve the manufacturing efficiency. The expansion ratio of the resin composition constituting the foamed resin layer 20 is preferably about 15 to 25 times.
　また、本実施形態では、発泡樹脂層２０を構成する樹脂組成物を、難燃性ポリウレタン樹脂組成物としている。このような構成とすれば、上記のような発泡倍率としたことも相俟って難燃性（不燃性）をより向上させることができる。つまり、発泡樹脂層２０に含まれる有機材の量が比較的に少なくなるため総発熱量を低くすることができる。このような難燃性ポリウレタン樹脂組成物としては、ポリイソシアネート化合物、ポリオール化合物、触媒、発泡剤、整泡剤及び添加剤を含んだ構成とされたものでもよい。また、このような難燃性ポリウレタン樹脂組成物には、難燃剤や、フィラー、無機充填材が更に含まれていてもよい。発泡樹脂層２０を構成する樹脂としては、ポリウレタン樹脂のほか、ポリスチレン樹脂、ポリエチレン樹脂、ポリプロピレン樹脂、フェノール樹脂、エポキシ樹脂等が例示される。 Further, in the present embodiment, the resin composition constituting the foamed resin layer 20 is a flame-retardant polyurethane resin composition. With such a configuration, the flame retardancy (non-flammability) can be further improved in combination with the above-mentioned foaming ratio. That is, since the amount of the organic material contained in the foamed resin layer 20 is relatively small, the total calorific value can be reduced. Such a flame-retardant polyurethane resin composition may be configured to include a polyisocyanate compound, a polyol compound, a catalyst, a foaming agent, a defoaming agent, and an additive. Further, such a flame-retardant polyurethane resin composition may further contain a flame retardant, a filler, and an inorganic filler. Examples of the resin constituting the foamed resin layer 20 include polyurethane resin, polystyrene resin, polyethylene resin, polypropylene resin, phenol resin, epoxy resin and the like.
　また、この発泡樹脂層２０の少なくとも一側端部２３の室内側面２１に対して直交状とされた端面２４及び端面２４に対して直交状とされた裏面２２は、室内側面２１を覆う部位から一連状に延出された表面層１０の延出部位１０ｂによって覆われている。このような構成とすれば、天井パネル１の少なくとも一側端部２の端面及び裏面における難燃性を向上させることができる。これにより、隣り合う天井パネル１，１の一側端部２，２の端面同士を対向させて施工された状態で室内側において火災が発生したような場合にも、発泡樹脂層２０の端面２４を露出させたものと比べて、天井パネル１の端面からの燃焼を遅延させることができる。また、発泡樹脂層２０の端面２４を露出させたものと比べて、天井パネル１の端面からの吸湿を抑制することができる。また、繊維強化樹脂層１４が一側端部２の端面及び裏面にも一連状に設けられることとなるので、一側端部２における曲げ剛性を向上させることができる。また、この一側端部２の端面及び裏面に室内側面から一連状に表面層１０が設けられることとなるので、例えば、エッジシートを貼着して端面を覆うようなものと比べて、室内側の角部（縁部）の見栄えを向上させることができる。また、表面層１０の剥離を抑制することができる。また、例えば、一側端部２の裏面に延出部位１０ｂ（端部裏面層１０ｄ）が設けられた部位に、ねじ等の固着具が止着される構成とすれば、止具保持力を向上させることもできる。 Further, the end surface 24 orthogonal to the indoor side surface 21 of at least one side end portion 23 of the foamed resin layer 20 and the back surface 22 orthogonal to the end surface 24 are from the portion covering the indoor side surface 21. It is covered with an extension portion 10b of the surface layer 10 extending in a series. With such a configuration, flame retardancy on the end surface and the back surface of at least one side end portion 2 of the ceiling panel 1 can be improved. As a result, even if a fire breaks out on the indoor side in a state where the end faces of the one side end portions 2 and 2 of the adjacent ceiling panels 1 and 1 are opposed to each other, the end face 24 of the foamed resin layer 20 It is possible to delay the combustion from the end face of the ceiling panel 1 as compared with the exposed one. Further, as compared with the case where the end face 24 of the foamed resin layer 20 is exposed, it is possible to suppress moisture absorption from the end face of the ceiling panel 1. Further, since the fiber reinforced resin layer 14 is provided in a series on the end face and the back surface of the one side end portion 2, the bending rigidity at the one side end portion 2 can be improved. Further, since the surface layer 10 is provided on the end surface and the back surface of the one side end portion 2 in a series from the indoor side surface, the chamber is compared with, for example, a case where an edge sheet is attached to cover the end surface. The appearance of the inner corner (edge) can be improved. In addition, peeling of the surface layer 10 can be suppressed. Further, for example, if a fixing tool such as a screw is fastened to a portion where an extension portion 10b (end back surface layer 10d) is provided on the back surface of the one-side end portion 2, the stopper holding force is increased. It can also be improved.
　また、本実施形態では、延出部位１０ｂを、発泡樹脂層２０の裏面２２と端面２４との角部に至るまで設けられた一側端部２の裏面層１６の天井下地３側を覆うように設けた構成としている。このような構成とすれば、一側端部２の裏面側に繊維強化樹脂層１４，１８及び難燃層１３，１７が複数層状に設けられることとなるので、一側端部２における曲げ剛性をより効果的に向上させることができる。なお、裏面層１６は、発泡樹脂層２０の裏面２２を全面に亘って覆うように設けられていてもよい。
　また、延出部位１０ｂは、当該天井パネル１の室内側面を構成し、発泡樹脂層２０の室内側面２１を覆う部位を構成する室内側面層１０ａから一連状に延出されている。この延出部位１０ｂは、発泡樹脂層２０の一側端部２３の端面２４を覆う端面層１０ｃと、一側端部２の裏面層１６の天井下地３側を覆う端部裏面層１０ｄと、を含む。 Further, in the present embodiment, the extension portion 10b covers the ceiling base 3 side of the back surface layer 16 of the one side end portion 2 provided up to the corner portion between the back surface 22 and the end surface 24 of the foamed resin layer 20. It has the configuration provided in. With such a configuration, the fiber reinforced resin layers 14 and 18 and the flame retardant layers 13 and 17 are provided in a plurality of layers on the back surface side of the one side end portion 2, so that the flexural rigidity of the one side end portion 2 is obtained. Can be improved more effectively. The back surface layer 16 may be provided so as to cover the back surface 22 of the foamed resin layer 20 over the entire surface.
Further, the extending portion 10b extends in a series from the indoor side surface layer 10a constituting the indoor side surface of the ceiling panel 1 and forming a portion covering the indoor side surface 21 of the foamed resin layer 20. The extension portion 10b includes an end face layer 10c that covers the end surface 24 of the one side end portion 23 of the foamed resin layer 20, and an end back surface layer 10d that covers the ceiling base 3 side of the back surface layer 16 of the one side end portion 2. including.
　また、上記のような端面層１０ｃ及び端部裏面層１０ｄを含む延出部位１０ｂは、好ましくは、天井パネル１の一方向の両側端部２，２に設けられたものでもよい。このような構成とすれば、天井パネル１の一方向の両側端部２，２の端面における難燃性を向上させることができる。また、天井パネル１の四周の側端部２，２，２，２に端面層１０ｃ及び端部裏面層１０ｄを含む延出部位１０ｂを設けた構成としてもよい。このような構成とすれば、天井パネル１の四周の側端部２，２，２，２の端面における難燃性を向上させることができる。なお、各側端部２，２，２，２は、いずれも同様の構成であるので、以下では一つの側端部２を例にとってその詳細について説明する。 Further, the extension portion 10b including the end face layer 10c and the end back surface layer 10d as described above may be preferably provided at both side end portions 2 and 2 in one direction of the ceiling panel 1. With such a configuration, it is possible to improve the flame retardancy of the end faces of the side end portions 2 and 2 in one direction of the ceiling panel 1. Further, the ceiling panel 1 may be provided with an extension portion 10b including an end face layer 10c and an end back surface layer 10d on the side end portions 2, 2, 2, 2 on the four circumferences. With such a configuration, it is possible to improve the flame retardancy at the end faces of the side end portions 2, 2, 2, 2 of the four circumferences of the ceiling panel 1. Since each of the side end portions 2, 2, 2, and 2 has the same configuration, the details thereof will be described below by taking one side end portion 2 as an example.
　本実施形態では、側端部２の端面は、当該天井パネル１の室内側面及び裏面に対して直交状とされている。ここに、直交状とは、端面と室内側面及び裏面とのなす角が９０度であるものに限られず、例えば、８５度～９５度程度であるものも含む。また、隣り合う天井パネル１，１の端面同士を当接させて施工する場合には、端面と室内側面とのなす角を、９０度未満（例えば、８５度～８９度）としてもよい。このような構成とすれば、隣り合う天井パネル１，１の端面同士を当接させて施工する際に、室内側において隙間が生じるようなことを抑制することができる。
　発泡樹脂層２０の側端部２３の端面２４は、発泡樹脂層２０の室内側面２１及び裏面２２に対して上記同様の直交状とされている。
　延出部位１０ｂは、発泡樹脂層２０の一側端部２３の端面２４の室内側角部及び裏面側角部に応じた位置に溝底が繊維強化樹脂層１４内に位置するように形成された折曲溝が設けられた部位において折り曲げられて一側端部２３に貼着されたものでもよい。 In the present embodiment, the end surface of the side end portion 2 is orthogonal to the indoor side surface and the back surface of the ceiling panel 1. Here, the orthogonal shape is not limited to the one in which the angle formed by the end surface and the indoor side surface and the back surface is 90 degrees, and also includes, for example, the one having an angle of about 85 degrees to 95 degrees. Further, when the end faces of the adjacent ceiling panels 1 and 1 are brought into contact with each other for construction, the angle formed by the end faces and the indoor side surface may be less than 90 degrees (for example, 85 degrees to 89 degrees). With such a configuration, it is possible to prevent a gap from being generated on the indoor side when the end faces of the adjacent ceiling panels 1 and 1 are brought into contact with each other for construction.
The end surface 24 of the side end portion 23 of the foamed resin layer 20 has the same orthogonal shape as the above with respect to the indoor side surface 21 and the back surface 22 of the foamed resin layer 20.
The extension portion 10b is formed so that the groove bottom is located in the fiber reinforced resin layer 14 at a position corresponding to the indoor side corner portion and the back surface side corner portion of the end surface 24 of the one side end portion 23 of the foamed resin layer 20. It may be bent at a portion where a bent groove is provided and attached to one side end portion 23.
　なお、延出部位１０ｂは、繊維強化樹脂層１４を含む表面層１０のみからなるものでもよいが、裏面側に発泡樹脂層２０の一部が設けられたものでもよく、また、繊維強化樹脂層１４の一部が切除されたものでもよい。また、延出部位１０ｂの端部裏面層１０ｄの延出方向に沿う寸法（幅寸法）は、側端部２の強度上の観点や、剥離を抑制する観点、軽量化を図る観点等から適宜の寸法としてもよい。例えば、この端部裏面層１０ｄの幅寸法を、当該天井パネル１の厚さ寸法の１倍～１５倍程度としてもよく、好ましくは、２倍～１０倍程度としてもよい。また、側端部２の裏面側に、この端部裏面層１０ｄを受け入れる凹段部を設けた構成としてもよい。このような凹段部は、切削等によって切除されることで形成されたものでもよく、圧縮によって形成されたものでもよい。
　また、四周の側端部２，２，２，２のそれぞれに折り曲げられる延出部位１０ｂを設けた構成とした場合には、コーナー部に、折り曲げられた延出部位１０ｂの重なり合いを低減する適宜の切欠状凹所を設けた構成としてもよい。 The extension portion 10b may be composed of only the surface layer 10 including the fiber reinforced resin layer 14, but may be one in which a part of the foamed resin layer 20 is provided on the back surface side, or the fiber reinforced resin layer. A part of 14 may be excised. Further, the dimension (width dimension) along the extension direction of the end back surface layer 10d of the extension portion 10b is appropriately determined from the viewpoint of the strength of the side end portion 2, the viewpoint of suppressing peeling, the viewpoint of weight reduction, and the like. It may be the dimension of. For example, the width dimension of the end back surface layer 10d may be about 1 to 15 times, preferably about 2 to 10 times, the thickness dimension of the ceiling panel 1. Further, a concave step portion for receiving the end back surface layer 10d may be provided on the back surface side of the side end portion 2. Such a concave step portion may be formed by cutting by cutting or the like, or may be formed by compression.
Further, in the case where the extension portions 10b to be bent are provided at the side end portions 2, 2, 2 and 2 of the four circumferences, the overlap of the bent extension portions 10b is appropriately reduced at the corner portions. A notch-shaped recess may be provided.
　上記のような構成とされた天井パネル１は、図２に示すように、表面層１０を構成する表面側複合シート１０Ａに、発泡樹脂層２０を構成する樹脂組成物を供給して成形するようにしてもよい。なお、図２では、発泡樹脂層２０と強化繊維シート１５とを個別層状に図示しているが、実際には、上記したように発泡樹脂層２０を構成する樹脂組成物の一部が強化繊維シート１５に含浸されて繊維強化樹脂層１４が形成される。
　表面側複合シート１０Ａは、適宜の巻取状態とされた操出ローラー等の操出部から搬送ベルト等の搬送部に向けて繰り出されるものであってもよい。また、この表面側複合シート１０Ａを構成するガラス繊維シート１１、接着樹脂層１２、難燃層１３及び強化繊維シート１５並びに発泡樹脂層２０の幅寸法（操出方向及び厚さ方向に直交する方向の寸法）は、以下のようにしてもよい。 As shown in FIG. 2, the ceiling panel 1 having the above-described structure is formed by supplying the resin composition constituting the foamed resin layer 20 to the surface-side composite sheet 10A constituting the surface layer 10. It may be. Although the foamed resin layer 20 and the reinforcing fiber sheet 15 are shown as individual layers in FIG. 2, in reality, as described above, a part of the resin composition constituting the foamed resin layer 20 is a reinforcing fiber. The sheet 15 is impregnated to form the fiber reinforced resin layer 14.
The front surface side composite sheet 10A may be one that is fed from a feeding portion such as a feeding roller that has been appropriately wound up toward a transporting portion such as a transport belt. Further, the width dimensions of the glass fiber sheet 11, the adhesive resin layer 12, the flame retardant layer 13, the reinforcing fiber sheet 15, and the foamed resin layer 20 constituting the surface side composite sheet 10A (directions orthogonal to the feeding direction and the thickness direction). Dimensions) may be as follows.
　接着剤によって積層一体化された難燃層１３及び強化繊維シート１５の幅寸法Ｗ３を互いに同寸法とし、接着樹脂層１２の幅寸法Ｗ２を、難燃層１３及び強化繊維シート１５の幅寸法Ｗ３よりも大としてもよい。つまり、難燃層１３及び強化繊維シート１５の幅方向両外側に接着樹脂層１２が存在する構成としてもよい。また、接着樹脂層１２の幅寸法Ｗ２を、ガラス繊維シート１１の幅寸法Ｗ１以下としてもよい。つまり、接着樹脂層１２を、ガラス繊維シート１１の幅方向両外側に露出しないように設けた構成としてもよい。また、発泡樹脂層２０の幅寸法Ｗ４を、接着樹脂層１２の幅寸法Ｗ２よりも小さく、かつ難燃層１３及び強化繊維シート１５の幅寸法Ｗ３以上としてもよい。つまり、発泡樹脂層２０を、難燃層１３及び強化繊維シート１５を全体に亘って覆うように、かつ接着樹脂層１２の幅方向両外側に露出しないように設けた構成としてもよい。 The width dimension W3 of the flame-retardant layer 13 and the reinforcing fiber sheet 15 laminated and integrated by the adhesive is the same as each other, and the width dimension W2 of the adhesive resin layer 12 is the width dimension W3 of the flame-retardant layer 13 and the reinforcing fiber sheet 15. May be larger than. That is, the adhesive resin layer 12 may be present on both outer sides of the flame-retardant layer 13 and the reinforcing fiber sheet 15 in the width direction. Further, the width dimension W2 of the adhesive resin layer 12 may be set to be equal to or less than the width dimension W1 of the glass fiber sheet 11. That is, the adhesive resin layer 12 may be provided so as not to be exposed on both outer sides of the glass fiber sheet 11 in the width direction. Further, the width dimension W4 of the foamed resin layer 20 may be smaller than the width dimension W2 of the adhesive resin layer 12, and the width dimension W3 or more of the flame retardant layer 13 and the reinforcing fiber sheet 15 may be set. That is, the foamed resin layer 20 may be provided so as to cover the flame-retardant layer 13 and the reinforcing fiber sheet 15 as a whole and not to be exposed on both outer sides of the adhesive resin layer 12 in the width direction.
　上記のような構成とすれば、搬送部上を搬送される表面側複合シート１０Ａに発泡樹脂層２０を構成する樹脂組成物を供給（塗布）した際に樹脂組成物がガラス繊維シート１１の表面側に染み出すようなことを接着樹脂層１２によって抑制することができる。これにより、化粧面となるガラス繊維シート１１の外観不良を抑制することができ、また、染み出した樹脂組成物が搬送部に付着するようなことを抑制することができる。また、比較的に高コストとなる難燃層１３及び強化繊維シート１５を最低限の幅寸法Ｗ３として低コスト化を図りながらも、接着樹脂層１２の幅寸法Ｗ２を大とすることで、接着樹脂層１２を滲出抑制層として機能させることができる。 With the above configuration, when the resin composition constituting the foamed resin layer 20 is supplied (coated) to the surface side composite sheet 10A transported on the transport portion, the resin composition is the surface of the glass fiber sheet 11. The adhesive resin layer 12 can suppress the exudation to the side. As a result, it is possible to suppress the appearance defect of the glass fiber sheet 11 which is the decorative surface, and it is possible to prevent the exuded resin composition from adhering to the transport portion. Further, while reducing the cost by setting the flame-retardant layer 13 and the reinforcing fiber sheet 15, which are relatively expensive, to the minimum width dimension W3, the adhesive resin layer 12 is adhered by increasing the width dimension W2. The resin layer 12 can function as an exudation suppressing layer.
　また、このように供給された樹脂組成物を覆うように、図２においては省略しているが、裏面層１６を構成する裏面側複合シートを配置し、厚さを規制しながら樹脂組成物を発泡させて成形するようにしてもよい。この裏面側複合シートは、上記同様、適宜の巻取状態とされた操出部から搬送部に向けて繰り出されるものであってもよい。また、この裏面側複合シートを構成する接着剤によって積層一体化された裏面側難燃層１７及び強化繊維シート１９の幅寸法は、互いに同寸法とされたものでもよく、また、発泡樹脂層２０の幅寸法Ｗ４以上であってもよい。つまり、裏面側難燃層１７及び強化繊維シート１９を、発泡樹脂層２０を全体に亘って覆うように設けた構成としてもよい。
　このように表面側複合シート１０Ａと裏面側複合シートとの間に供給された樹脂組成物が発泡して発泡樹脂層２０及び厚さ方向両側の繊維強化樹脂層１４，１８が形成されたパネル体の四周側端部を適宜、切断等して寸法調整するようにしてもよい。次いで、上記のような延出部位１０ｂを四周側端部に形成し、巻き込むように折り曲げて天井パネル１を成形するようにしてもよい。 Further, although omitted in FIG. 2, the back surface side composite sheet constituting the back surface layer 16 is arranged so as to cover the resin composition supplied in this way, and the resin composition is controlled while controlling the thickness. It may be foamed and molded. Similar to the above, the back surface side composite sheet may be unwound from the manipulating portion in an appropriate winding state toward the transporting portion. Further, the width dimensions of the back surface side flame retardant layer 17 and the reinforcing fiber sheet 19 laminated and integrated by the adhesive constituting the back surface side composite sheet may be the same as each other, and the foamed resin layer 20 may be the same. Width dimension W4 or more may be used. That is, the flame retardant layer 17 on the back surface side and the reinforcing fiber sheet 19 may be provided so as to cover the foamed resin layer 20 as a whole.
A panel body in which the resin composition supplied between the front surface side composite sheet 10A and the back surface side composite sheet is foamed to form the foamed resin layer 20 and the fiber reinforced resin layers 14 and 18 on both sides in the thickness direction. The dimensions may be adjusted by appropriately cutting the four peripheral end portions of the above. Next, the extension portion 10b as described above may be formed at the four peripheral end portions and bent so as to be involved in forming the ceiling panel 1.
　なお、上記した例では、発泡樹脂層２０の厚さ方向両側の繊維強化樹脂層１４，１８を、強化繊維シート１５，１９に発泡樹脂層２０を構成する樹脂組成物が含浸されて形成されたものとした例を示しているが、このような態様に限られない。発泡樹脂層２０の厚さ方向両側の繊維強化樹脂層１４，１８のうちの両方または一方を、発泡樹脂層２０とは別体的に形成されて適宜の接着剤によって積層一体化されたものとしてもよい。また、難燃層１３及び裏面側難燃層１７も同様、これらのうちの両方または一方が繊維強化樹脂層１４，１８に対して適宜の接着剤によって積層一体化されたものとしてもよい。
　また、本実施形態では、発泡樹脂層２０の天井下地３側に裏面側繊維強化樹脂層１８と裏面側難燃層１７とを含む裏面層１６を設けた例を示しているが、裏面側繊維強化樹脂層１８及び裏面側難燃層１７の両方または一方を設けていない構成としてもよい。
　また、本実施形態では、発泡樹脂層２０の室内側に、繊維強化樹脂層１４を介して難燃層１３を設けた例を示しているが、繊維強化樹脂層１４を設けていない構成としてもよい。本実施形態に係る内装パネルとしての天井パネル１の上記した各部の構成は、一例に過ぎず、その他、種々の変形が可能である。 In the above example, the fiber-reinforced resin layers 14 and 18 on both sides of the foamed resin layer 20 in the thickness direction are formed by impregnating the reinforcing fiber sheets 15 and 19 with the resin composition constituting the foamed resin layer 20. Although an example is shown, the present invention is not limited to such an embodiment. Assuming that both or one of the fiber-reinforced resin layers 14 and 18 on both sides of the foamed resin layer 20 in the thickness direction is formed separately from the foamed resin layer 20 and laminated and integrated with an appropriate adhesive. May be good. Similarly, both or one of the flame-retardant layer 13 and the back-side flame-retardant layer 17 may be laminated and integrated with the fiber-reinforced resin layers 14 and 18 with an appropriate adhesive.
Further, in the present embodiment, an example in which the back surface layer 16 including the back surface side fiber reinforced resin layer 18 and the back surface side flame retardant layer 17 is provided on the ceiling base 3 side of the foamed resin layer 20 is shown. The reinforced resin layer 18 and the back surface side flame retardant layer 17 may not be provided or one of them.
Further, in the present embodiment, an example in which the flame-retardant layer 13 is provided on the indoor side of the foamed resin layer 20 via the fiber-reinforced resin layer 14, but the fiber-reinforced resin layer 14 may not be provided. Good. The configuration of each of the above-mentioned parts of the ceiling panel 1 as the interior panel according to the present embodiment is merely an example, and various other modifications are possible.
　１　　　天井パネル（内装パネル）
　１１　　ガラス繊維シート
　１２　　接着樹脂層
　１３　　難燃層
　１４　　繊維強化樹脂層
　１６　　裏面層
　１７　　裏面側難燃層
　１８　　裏面側繊維強化樹脂層
　２０　　発泡樹脂層
　３　　　天井下地（内装下地） 1 Ceiling panel (interior panel)
11 Glass fiber sheet 12 Adhesive resin layer 13 Flame-retardant layer 14 Fiber-reinforced resin layer 16 Back-side layer 17 Back-side flame-retardant layer 18 Back-side fiber-reinforced resin layer 20 Foamed resin layer 3 Ceiling base (interior base)

Claims (8)

  1. 　裏面側を内装下地側に向けて施工される内装パネルであって、
    　発泡樹脂層の室内側に設けられた金属製の難燃層と、この難燃層の室内側に、着色剤を含む接着樹脂層を介して積層され、この接着樹脂層の色調を室内側から視認可能な透過性を有したガラス繊維シートと、を備えていることを特徴とする内装パネル。     An interior panel that is constructed with the back side facing the interior base side.
    A metal flame-retardant layer provided on the indoor side of the foamed resin layer and an adhesive resin layer containing a colorant are laminated on the indoor side of the flame-retardant layer, and the color tone of the adhesive resin layer is adjusted from the indoor side. An interior panel characterized by having a glass fiber sheet having visible transparency.
  2. 　請求項１において、
    　前記接着樹脂層中における前記着色剤の含有率は、２～１４質量％であることを特徴とする内装パネル。     In claim 1,
    An interior panel characterized in that the content of the colorant in the adhesive resin layer is 2 to 14% by mass.
  3. 　請求項１または２において、
    　前記着色剤のうちの８０質量％以上が無機顔料であることを特徴とする内装パネル。     In claim 1 or 2,
    An interior panel characterized in that 80% by mass or more of the colorant is an inorganic pigment.
  4. 　請求項１乃至３のいずれか１項において、
    　前記接着樹脂層の樹脂主成分は、ポリエチレン系樹脂であることを特徴とする内装パネル。     In any one of claims 1 to 3,
    An interior panel characterized in that the resin main component of the adhesive resin layer is a polyethylene-based resin.
  5. 　請求項１乃至４のいずれか１項において、
    　前記ガラス繊維シートは、目付が２０ｇ／ｍ２～１００ｇ／ｍ２のガラス不織布であることを特徴とする内装パネル。     In any one of claims 1 to 4,
    The glass fiber sheet is an interior panel characterized by being a glass non-woven fabric having a basis weight of 20 g / m 2 to 100 g / m 2.
  6. 　請求項１乃至５のいずれか１項において、
    　前記発泡樹脂層の室内側に、繊維強化樹脂層を介して前記難燃層が設けられていることを特徴とする内装パネル。     In any one of claims 1 to 5,
    An interior panel characterized in that the flame-retardant layer is provided on the indoor side of the foamed resin layer via a fiber-reinforced resin layer.
  7. 　請求項１乃至６のいずれか１項において、
    　前記発泡樹脂層の裏面側には、裏面側繊維強化樹脂層と該裏面側繊維強化樹脂層の内装下地側に設けられた裏面側難燃層とを含む裏面層が設けられていることを特徴とする内装パネル。     In any one of claims 1 to 6,
    The back surface side of the foamed resin layer is provided with a back surface layer including a back surface side fiber reinforced resin layer and a back surface side flame retardant layer provided on the interior base side of the back surface side fiber reinforced resin layer. Interior panel.
  8. 　請求項１乃至７のいずれか１項において、
    　１ｍ２当たりの質量が１．０ｋｇ以下であり、天井パネルであることを特徴とする内装パネル。     In any one of claims 1 to 7,
    An interior panel having a mass of 1.0 kg or less per 1 m 2 and being a ceiling panel.
PCT/JP2020/040366 2019-10-31 2020-10-28 Interior panel WO2021085452A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02236350A (en) * 1988-10-06 1990-09-19 Shikoku Kaken Kogyo Co Ltd Surface layer hard facing building material
JP2003093892A (en) * 2001-09-25 2003-04-02 Sumitomo Metal Ind Ltd Metal material for photocatalyst product and method for manufacturing metal material and product
JP2019167764A (en) * 2018-03-26 2019-10-03 パナソニックＩｐマネジメント株式会社 Interior panel and interior panel manufacturing method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02236350A (en) * 1988-10-06 1990-09-19 Shikoku Kaken Kogyo Co Ltd Surface layer hard facing building material
JP2003093892A (en) * 2001-09-25 2003-04-02 Sumitomo Metal Ind Ltd Metal material for photocatalyst product and method for manufacturing metal material and product
JP2019167764A (en) * 2018-03-26 2019-10-03 パナソニックＩｐマネジメント株式会社 Interior panel and interior panel manufacturing method

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