JP2012197581A - Indoor surface structure and method for manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an indoor surface structure disposed at the surface surrounding a room, which includes a heat insulator of resin foam, with an excellent function for shielding radiant heat from the outside, hardly causing the problem of dew condensation on the indoor side, and making a strong joint to the surface material to be sprayed with a resin foam precursor; and a method for manufacturing the same.SOLUTION: A single side corrugated board includes a corrugated portion having a corrugated shape and a flat plate portion, which are laminated. A nonwoven fabric having a metal deposition layer is laminated to the flat plate portion side of the corrugated board, with the metal deposition layer facing outside, so as to form a heat shielding sheet. On the corrugated portion side of the heat shielding sheet, a resin foam layer is laminated on the entire surface of the corrugated portion in a close contact state. An indoor surface structure includes a heat shielding laminate composed of the heat shielding sheet and the resin foam layer, being disposed at the surface surrounding a room selected from a ceiling surface, a wall surface, and a floor surface, with the metal deposition layer facing the outside of the room. A method for manufacturing the indoor surface structure includes: laminating the heat shielding sheet to a frame body such that the indoor space side is partitioned from the opposite side, with the corrugated portion of the heat shielding sheet facing the inside; spraying the precursor of the resin foam to the heat shielding sheet so that the space surrounded by the inner side of the frame body is filled with the resin foam to be cured; and then combining the board with the frame body.

Description

  The present invention relates to an indoor surface structure in which a heat-insulating and heat-insulating laminate for interrupting heat conduction between the room and the outside air is arranged on an enclosure surface such as a ceiling surface, a wall surface, or a floor surface of the room.

  Conventionally, as a heat insulating material used for a wall of a house, a heat insulating material in which glass wool is covered with a resin film or an aluminum sheet and a heat insulating material made of a foamed resin body layer made of urethane foam or the like are known. For example, it is used by being sandwiched between an outer wall plate and an inner wall plate. (For example, see Patent Document 1)

  Among them, those using foamed resin that is foamed in-situ by spraying are widely adopted because of high airtightness and high heat insulation.

  For example, a heat insulating wall structure using a hard heat insulating material made of urethane foam is generally formed by spraying and curing a precursor on the surface of a face material. (For example, see Patent Document 2)

  As the face material, a plywood or a resin net is generally used, but the plywood has a weak bonding force with the foam and may be peeled off. In addition, the resin net is advantageous in terms of cost, but it is inferior in heat insulation than when using plywood. Further, when using plywood, the ventilation is blocked, which may cause a problem of dew condensation on the indoor side.

JP 2000-271944 A JP 2006-057398 A

  The object of the present invention is to use a foamed resin as a heat insulating material, which has an excellent function of blocking radiant heat from the outside, has few problems of dew condensation on the indoor side, and has a bonding force with the face material to be sprayed with the foamed resin precursor. An object of the present invention is to provide a strong indoor surface structure arranged on an enclosure surface selected from a ceiling surface, a wall surface, and a floor surface of a room, and a method for producing the same.

  The gist of the present invention is that the non-woven fabric provided with the metal vapor deposition layer on the flat plate portion of the single-sided corrugated cardboard formed by laminating the wave step portion and the flat plate portion formed into a corrugated shape is disposed outside the metal vapor deposition layer. The heat-insulating and heat-insulating laminate comprising the heat-shielding sheet bonded and the foamed resin body layer in which the corrugated portion of the heat-shielding sheet is laminated in close contact with the entire surface of the corrugated portion, It is an indoor surface structure that is disposed on an enclosure surface selected from a ceiling surface, a wall surface, and a floor surface of the room with the metal vapor deposition layer outside the room.

  The enclosure surface may be a ceiling surface.

  Also, the gist of the present invention is that the room surface structure faces a board space and a frame made of a frame material that is connected to the board and fixes the board in a surface direction of the board. And the heat shield sheet is bonded to the frame body with the wave step portion inward so as to cover from the surface opposite to the side facing the indoor space of the frame body, and the inner surface of the frame body It is in the indoor surface structure in which the foamed resin layer is filled in a space surrounded by the heat shield sheet and the board.

  Further, the gist of the present invention is a method for creating the indoor surface structure, wherein the frame body is arranged on the enclosure surface before the board is joined, and the frame body faces the indoor space. The heat shield sheet is bonded with the wave step portion inward so as to cover from the surface opposite to the side to be done, and a foamed resin precursor is sprayed toward the heat shield sheet to the inner surface of the frame body It is a method for creating an indoor surface structure in which the enclosed space is filled, foamed and cured, and then the board is coupled to the frame.

  According to the present invention, using a heat insulating material made of foamed resin, it has an excellent function of blocking radiant heat from the outside, there is little problem of dew condensation on the indoor side, and the bonding strength of the foam resin precursor with the face material to be sprayed is reduced. Provided is a strong indoor surface structure arranged on an enclosure surface selected from a ceiling surface, a wall surface, and a floor surface of a room, and a method for producing the same.

It is a perspective schematic diagram which shows the structure of the frame which is a component of the indoor surface structure of this invention. FIG. 2 is a cross-sectional end view taken along the line AA of FIG. FIG. 3 is a cross-sectional end view illustrating a process in which the indoor surface structure of the present invention is created, in a state where the operation has proceeded from FIG. 2. FIG. 4 is a cross-sectional end view illustrating a process in which the indoor surface structure of the present invention is created, in a state where the operation further proceeds from FIG. 3. It is sectional drawing of the AA cross-section direction of FIG. 1 which shows the aspect of the indoor surface structure of this invention. It is sectional drawing of the AA cross-section direction of FIG. 1 which shows the other aspect of the indoor surface structure of this invention. It is explanatory drawing which shows the structure of the apparatus used for Experimental example 1. FIG. It is explanatory drawing which shows the structure of the experiment of Experimental example 2. FIG.

  In this specification, the indoor surface refers to an enclosure surface selected from the ceiling surface, wall surface, and floor surface of the room, and the indoor surface structure refers to the structure of these surfaces. The structure of these surfaces is not a mere geometric plane but a structure having a predetermined thickness that spreads two-dimensionally.

  In order to clarify the indoor surface structure of the present invention, an example of the creation process will be described.

  FIG. 1 is a schematic perspective view of a main part showing the configuration of a frame 4 which is a component of the indoor structure of the present invention. When the enclosure surface is a floor surface, the frame 4 is composed of a floor joist 5 and a joist 7 orthogonal to the floor joist. When the enclosing surface is a wall surface, the frame body 4 includes a standing frame 5a and a frame member 7a orthogonal to the standing frame 5a. When the enclosure surface is a ceiling surface, the frame body 4 includes a ceiling joist 5b and a frame member (beam) orthogonal to the ceiling joist 5b.

  Floor joists, standing frames, and ceiling joists are described, for example, in Architectural Handbook II (Issued by Maruzen Co., Ltd .; second edition, page 333), and the above floor joists, standing frames, and ceiling joists in this specification are described. These members are equivalent to or similar to those members.

  In general, the frame body 4 is a unit of a lattice-like structure that extends parallel to the enclosure surface, and on the floor, a floor plate is stacked on the upper surface of the lattice. On the wall, a wall board facing the indoor space is stacked and stuck inside the lattice. On the ceiling, a ceiling board facing the indoor space is stacked and attached below the lattice. A floor board, a wall board, and a ceiling board are called a board.

  Step 1: The heat shield sheet 8 is bonded so as to cover the frame 4 before being joined to the board 2 by being placed on the enclosure surface. The frame body 4 is arranged on the enclosing surface with its round direction parallel to the surface direction of the enclosing surface.

  The heat shield sheet 8 is arranged from the surface 6 opposite to the side facing the indoor space of the frame body 4 so as to cover the space 12 surrounded by the inner surface 10 of the frame body 4. (Figure 2)

  The heat shield sheet 8 is formed by laminating a nonwoven fabric 22 of the flat plate portion 18 of the single-sided cardboard 20 formed by laminating the wave step portion 16 and the flat plate portion 18 formed into a corrugated shape. A metal vapor deposition layer 24 is formed on one side of the nonwoven fabric 22, and the nonwoven fabric 22 is bonded to the single-sided corrugated paper 20 with the metal vapor deposition layer 24 facing outside.

  Step 2: The hard foamed urethane precursor 30 is sprayed onto the space 12 surrounded by the inner surface of the frame body 4 by spraying the hard foamed urethane precursor toward the heat shield sheet 8 using the gun 32 to identify the indoor space. Fill. (Figure 3)

  The filled rigid foamed urethane precursor is foamed and cured to form a foamed resin body layer 34 made of rigid foamed urethane. As a result, as shown in FIG. 4, the thermal insulation sheet 8 and the foamed resin body layer 34 are in a state where the upper surface of the foamed resin body layer 34 is in close contact with the surface of the corrugated portion 16 of the single-sided cardboard 20. Laminated. (Fig. 4)

  Step 3: After forming the foamed resin body layer 34 in all necessary spaces 12, the board 2 is stacked on the frame body 4. The board 2 is stacked on the side facing the indoor space of the frame body 4 so as to cover the space 12 of the frame body 4 from the inside. (Fig. 5)

  As a result, the heat insulating heat insulation laminate 36 in which the foamed resin body layer 34 is laminated so that the wave step portion 16 of the heat shield sheet 8 is in close contact with the entire surface of the wave step portion 16, the metal vapor-deposited layer 24 is placed in the chamber. The indoor surface structure 44 of the present invention is created on the outside and arranged on the enclosure surface selected from the ceiling surface, wall surface, and floor surface of the room.

  In addition, the indoor surface structure of the present invention may have an aspect in which the board 2 is not attached when the enclosure surface is a wall surface or a ceiling surface. Further, the single-sided corrugated paper 20 is preferably waterproofed particularly when the enclosing surface is a wall surface.

  Furthermore, as shown in FIG. 6, as shown in FIG. 6, a shield board 2 a facing the outdoor space of the frame body 4 may be stuck and stuck so as to cover the outdoor space from the outdoor space 12 of the frame body 4. That is, the indoor surface structure of the present invention may have a configuration in which the foamed resin body layer 34 is sandwiched between the board 2 and the shielding board 2a with the heat shielding sheet 8 interposed therebetween.

  The indoor surface structure 44 of the present invention has excellent heat insulation provided by the aerated structure by the tunnel-like space 39 formed between the corrugated portion 16 and the flat plate portion 18 of the foamed resin body layer 34 and the single-sided cardboard 20. In addition, since the foamed resin body layer 34 is in close contact with the entire surface of the wave step portion 16, strong joining between the foamed resin body layer 34 and the heat shield sheet 8 is realized. Since the wave step portion 16 is made of paper, the foamed resin bites into the micropores between the pulps constituting the paper, and the bonding force between the foamed resin body layer 34 and the wave step portion 16 is increased. By being corrugated, the contact area between the foamed resin body layer 34 and the corrugated portion 16 is increased because the contact area with the foamed resin body layer 34 is larger than when they are flat.

  Furthermore, the heat shield sheet 8 is a laminate of a breathable nonwoven fabric and a hygroscopic single-sided cardboard 20, and the single-sided cardboard 20 has an effect of absorbing the humidity of the outside air and preventing an increase in indoor humidity. Moreover, the single-sided corrugated paper 20 has an effect of absorbing indoor moisture and preventing troubles such as condensation.

  In addition, since the metal vapor deposition layer 24 is formed on the outermost layer of the outdoor hood of the heat shield sheet 8, it has an effect of blocking radiant heat from entering the room by reflecting radiant heat from the outside.

  The indoor surface structure 44 of the present invention having such an excellent effect is preferably used for the purpose of maintaining an indoor air-conditioned environment by being applied to a room enclosure such as a ceiling surface, a wall surface, or a floor surface. Can do. In particular, when it is arranged on the ceiling surface, the solar heat is effectively shielded.

  Examples of the foamed resin used in the present invention include phenol-based foamed resins in addition to urethane-based foamed resins. It may be a polyisocyanurate-based foamed resin or a polyolefin-based foamed resin. A mode in which a foamed resin piece or a precursor containing beads, an adhesive, and a foaming agent is sprayed onto an object to be cured may be used.

Among these, a hard urethane foam resin is preferable. The hard urethane foam resin is blended with polyol, catalyst, thickener, flame retardant, foaming agent, etc. in the polyol component, and this and the polyisocyanate component are mixed and foamed and cured, and its density is 20-50 kg / m. ³ is preferred.

Examples of the nonwoven fabric used in the present invention include wet nonwoven fabrics and dry nonwoven fabrics. Among them, spunbond nonwoven fabrics are preferable. The basis weight of the nonwoven fabric is preferably ²⁰ to 200 g / m ² .

  The metal vapor deposition layer 24 is made of a glossy metal, but is preferably formed by vapor deposition of aluminum from the viewpoint of cost and ease of manufacture.

  The effects of the present invention are apparent from the following experimental examples.

Experimental example 1

Sample Sample A: A heat shield sheet having the same configuration as the heat shield sheet 8 shown in FIG. The flat plate portion 18 of the single-sided corrugated paper 20 is a paperboard having a thickness of 0.2 mm, and the wave step portion 16 is a core having a wave height of 3 mm. Each layer was bonded through a hot melt spray web having a basis weight of 5 g / m ² . A spunbond nonwoven fabric having a basis weight of 30 g / m ² was used as the nonwoven fabric 22, and aluminum was deposited on the surface of the nonwoven fabric as the metal vapor deposition layer 24.
Sample B: Instead of the single-sided cardboard in Sample A, the same paperboard as the flat plate portion (18) of the single-sided cardboard was used, and a two-layer structure of aluminum-deposited nonwoven fabric and paperboard was used.
Sample C: Instead of the aluminum-deposited spunbond nonwoven fabric in Sample A, a polyester film (PET film: thickness 25 μm) vapor-deposited in aluminum was used, and a two-layer structure of an aluminum vapor-deposited film and single-sided corrugated paper was used. .

Experimental Apparatus A humidification experiment was performed by reproducing the indoor structure of the present invention in a model manner using an apparatus using the box 101 shown in FIG. The inner dimensions of the box 101 are 320 mm in height, 270 mm in height, and 270 mm in width. The sample 106 is placed 120 mm above the square bottom surface 104 with the vapor deposition surface facing upward, and the density as a heat insulating material is opposite to the vapor deposition surface. A foamed urethane layer 110 having a thickness of 20 kg / m ³ and a thickness of 20 mm was adhered and laminated. The sample 106 is square and the size is the same as the size of the bottom surface 104. A 2-mesh wire mesh 109 was stretched 100 mm above the sample 106.

Experimental operation (1) A commercial cold insulator 108 (500 g) cooled to −20 ° C. was placed on a wire mesh 109.
(2) 200 cc of boiling hot water 112 was placed in the tray 111 and immediately placed on the bottom surface 104.
(3) At the same time, indoor air was continuously blown into the upper space 116 of the box 101 to move the air in the box 101 so that the cold air from the cold insulating material 108 reached the sample 106. This state was continued for 5 minutes.
(4) The tray 111 containing the hot water 112 was taken out from the box 101. After repeating the operations (2) to (4) three times, the surface layer portion (metal vapor deposition layer), the back layer portion, and the interlayer portion of the sample 106 were examined visually and tactilely.

Experimental results Table 1 shows the experimental results. In the table, ○ indicates that the sample is hardly damaged by moisture, and the sample is maintained in a good state. Δ indicates that the sample is slightly damaged by moisture, and the sample is not maintained in a good state. × indicates moisture. This shows that the sample is markedly damaged and that the sample is very bad.

  As described above, in an experiment in which the indoor surface structure of the present invention is reproduced as a model, in the surface structure using the heat shielding sheet 8 shown in FIG. It was confirmed to have an effect to prevent. Further, it was found that when the paperboard was used instead of the single-sided corrugated cardboard 20, or when the metal vapor deposition film was used instead of the metal vapor deposition nonwoven fabric, the heat shield sheet was damaged by moisture.

Experimental example 2

Sample (size: 300mm x 300mm)
Sample 1: A one-sided cardboard paper of Sample A in the experimental example was formed by spraying a urethane foam layer having a thickness of 45 mm and a density of 30 kg / m ³ on the side of the paper.
Sample 2: Sample 1 having a structure in which an aluminum-deposited nonwoven fabric is removed.
Sample 3: A urethane foam layer similar to that used for Sample 1 was sprayed on one side of a 3 mm thick plywood plate.
Sample 4: those nonwoven composite sheet laminated with PET spunbond nonwoven having a mass per unit area of 40 g / m ² was formed by spraying the same urethane foam layer and was used to crocodile sample 1 polyethylene moisture-permeable film having a thickness of 30 [mu] m.

Experimental Procedure In the arrangement shown in FIG. 8, a type of electric heater 201 (1050 W) that radiates heat to the front surface and a sample 202 were arranged. The sample 202 was arranged so that the opposite side of the urethane foam layer faced the front surface of the electric stove 201, and the distance D between the electric stove 201 and the sample 202 was 500 mm.
The electric heater 201 was turned on for 20 minutes to irradiate the sample 202 with infrared rays, and the temperature of the urethane foam layer of the sample 202 after irradiation was measured by thermography.

Experimental results Table 2 shows the experimental results (temperature measurement results).

From Table 2, it was shown that the surface structure (sample 1) using the heat shielding sheet 8 shown in FIG. 2 has good heat shielding properties.

  From Experimental Examples 1 and 2, it was shown that the surface structure using the heat shield sheet 8 shown in FIG. 2 used for the indoor surface structure of the present invention has excellent heat shielding properties and moisture resistance against dew condensation. .

  In addition, the present invention can be carried out in a mode in which various improvements, modifications, and changes are added based on the knowledge of those skilled in the art without departing from the spirit of the present invention.

  The present invention is not limited to buildings, and can be applied to structures such as containers and shielding walls that require heat insulating walls.

2: Board 4: Frame 8: Heat shield sheet 12: Space 16: Wave step portion 18: Flat plate portion 20: Single-sided corrugated paper 22: Non-woven fabric 24; Metal vapor deposition layer 30: Precursor 34; Foamed resin body layer 36; Thermal insulation laminate 44: Indoor surface structure 101: Box 108: Cold insulator 109: Wire net 111: Tray 112: Hot water 201: Electric stove 202: Sample

Claims (4)

A heat-shielding sheet in which a non-woven fabric having a metal vapor-deposited layer is bonded to the flat-plate portion of a single-sided corrugated cardboard formed by corrugated corrugated portions and a flat-plate portion with the metal vapor-deposited layer facing outside And a heat-insulating and heat-insulating laminate comprising a foamed resin body layer in which the corrugated portion of the heat-shielding sheet is laminated in close contact with the entire surface of the corrugated portion, with the metal vapor-deposited layer outside the chamber. Indoor surface structure placed on the enclosure surface of the room. 2. The indoor structure according to claim 1, wherein the enclosure surface is a ceiling surface. The room surface structure includes a board facing an indoor space, and a frame body made of a frame member that is connected to the board and fixes the board, and is made of a frame material that makes a round in a surface direction of the board, and the heat shield sheet is formed of the frame body The wave step portion is bonded to the frame body so as to cover from the surface opposite to the side facing the indoor space, and is surrounded by the inner side surface of the frame body, the heat shield sheet, and the board. The indoor surface structure according to claim 1 or 2, wherein the foamed resin body layer is filled in a space. It is a creation method of the indoor surface structure of Claim 3, Comprising: The said frame body which is distribute | arranged to the said enclosure surface and before the said board | substrate is combined is on the opposite side to the side which faces the said indoor space of the said frame body. The heat shield sheet is bonded with the wave step portion inside so as to cover from the surface, and a foamed resin precursor is sprayed toward the heat shield sheet to fill a space surrounded by the inner surface of the frame body Then, foaming and curing are performed to form the foamed resin body layer, and then the board is bonded to the frame body.

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