JP2014134253A - Heat insulation panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat insulation panel capable of smoothing the surface of a base material.SOLUTION: A heat insulation panel 1 includes: a vacuum heat insulation material 3; a base material 2 in which a concave portion 23 in which the vacuum heat insulation material is accommodated and that has a generally concave cross-section; and a foam-based heat insulation material 5 filled in the concave portion. The base material is covered with a resin layer 2b. A convex portion 25 formed integrally with the resin layer is provided over an entire length of the base material in a longitudinal direction generally at center of an inner bottom surface of the concave portion in a width direction. A gap d is formed by the convex portion between the vacuum heat insulation material 3 and the inner bottom surface, and the foam-based heat insulation material is filled in the gap.

Description

  The present invention relates to a heat insulating panel including a vacuum heat insulating material, a base material in which the vacuum heat insulating material is accommodated and a recess having a substantially concave cross section, and a foam heat insulating material filled in the recess.

  Conventionally, a heat insulating panel is known in which a vacuum heat insulating material is disposed in a recess of a base material constituting a surface material of a heat insulating panel, and a foam heat insulating material is filled so as to cover the vacuum heat insulating material (for example, , See Patent Document 1 below).

JP 2002-54787 A

By the way, since the surface of the vacuum heat insulating material used for such a heat insulation panel has a convex part by a water | moisture-content adsorption agent, or it is in a vacuum state, a wrinkle will arise in an outer skin and an unevenness | corrugation will be seen.
Therefore, in the manufacturing process of the heat insulation panel, when the foamed resin is filled and foamed in a state where the vacuum heat insulating material is installed in the recess of the base material, the vacuum heat insulating material is pressed to the inner bottom surface side by the foaming pressure, and the vacuum heat insulating material The unevenness on the surface of the substrate is transferred to the substrate, and the unevenness is generated on the outer surface of the substrate.
In addition, if the vacuum heat insulating material is in direct contact with the inner bottom surface of the recess, the surface of the base material may be uneven as a product after it becomes a product.
According to Patent Document 1, since the vacuum heat insulating material is held by the fixing spacer, the vacuum heat insulating material can be accommodated without directly contacting the inner bottom surface of the base material. However, since the fixing spacer disclosed here is provided on both the front and back surfaces of the vacuum heat insulating material, it is difficult to reduce the weight and thickness of the heat insulating panel.

  The present invention has been proposed in view of such circumstances, and an object thereof is to provide a heat insulating panel capable of smoothing the surface of a substrate.

In order to achieve the above object, a heat insulating panel of the present invention includes a vacuum heat insulating material, a base material in which the vacuum heat insulating material is accommodated and formed with a recess having a substantially concave cross section, and a foaming system filled in the recess. A heat insulating panel including a heat insulating material, wherein the base material is coated with a resin layer, and is substantially integrated with the resin layer in the entire length in the longitudinal direction of the base material at the center in the width direction of the inner bottom surface of the recess. A formed ridge portion is provided, a gap is formed by the ridge portion between the vacuum heat insulating material and the inner bottom surface, and the foamed heat insulating material is filled in the gap. And
Moreover, in this invention, it is good also as a structure by which the spacer part is provided in the edge part by the side of the said inner bottom face of the said vacuum heat insulating material.

  According to the heat insulation panel which concerns on this invention, since it is set as the above-mentioned structure, the surface of a base material can be smoothed.

It is the principal part disassembled perspective view which showed typically an example of the heat insulation panel which concerns on one Embodiment of this invention. (A), (b) is a schematic explanatory drawing of the manufacturing process of the heat insulation panel, and all are schematic longitudinal cross-sectional views. (A), (b) is a schematic explanatory drawing of the manufacturing process of the heat insulation panel, and all are schematic longitudinal cross-sectional views.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
The heat insulating panel 1 according to the present embodiment includes a vacuum heat insulating material 3, a base material 2 in which the vacuum heat insulating material 3 is accommodated and a recess 23 having a substantially concave cross section is formed, and foam-based heat insulation filled in the recess 23. Material 5 is provided. The base material 2 is covered with a resin layer 2b, and a ridge portion 25 formed integrally with the resin layer 2b is provided on the entire length in the longitudinal direction of the base material 2 at the center in the width direction of the inner bottom surface 20a of the recess 23. ing. A gap d (see FIG. 2B) is formed between the vacuum heat insulating material 3 and the inner bottom surface 20a, and the foamed heat insulating material 5 is filled in the gap d (see FIG. 3B). )reference).
This will be described in detail below.

The heat insulation panel 1 is a long, substantially rectangular flat plate, and the heat insulation panel 1 is used as a heat insulation panel for building materials used for wall panels, floor panels, ceiling panels, and the like, such as wall foundations, floor foundations, ceiling foundations, etc. It is constructed with the back side fixed to the construction object.
The width dimension and the length dimension of the heat insulation panel 1 may be appropriately set according to the object or the like for which the heat insulation panel 1 is used. For example, when the heat insulation panel 1 is used as an interior building material, the width dimension may be about 300 mm to 900 mm, and the length dimension may be about 900 mm to 2400 mm.
Moreover, what is necessary is just to make it set suitably the thickness dimension of this heat insulation panel 1 according to the object in which the heat insulation panel 1 is used, the required heat insulation, etc.

The base material 2 used as the frame material of the heat insulation panel 1 includes a metal plate 2a made of a steel plate and resin layers 2b and 2b covering the front and back of the metal plate 2a as shown in the enlarged view of part X in FIG. It is formed by bending a plate material composed of As the steel plate, for example, a galvanized steel plate, a coated steel plate, a tin-plated steel plate, or the like can be used. Further, the metal plate is not limited to a steel plate, and other metals may be used.
As shown in FIG. 1, the substrate 2 has a surface portion 20 that is substantially flat, side portions 21 and 21, and back side edge pieces 22 and 22, and has a substantially concave cross section. In the figure, reference numeral 23 denotes a recess of the base material 2, and 24 denotes an opening of the base material 2.
The side surfaces 21 and 21 are formed to rise in the thickness direction of the heat insulating panel 1 from both ends of the surface portion 20 in the width direction. The back side edge pieces 22 are formed so as to protrude from the end of the side face 21 on the back side (the upper end in the figure) and narrow the width of the opening 24. As described above, the base material 2 has an opening on the back surface side of the heat insulating panel 1 and a recess 23 having the back surface of the front surface portion 20 as the inner bottom surface 20a (see FIG. 1 and the like). In addition, 20b in the figure has shown the outer surface of the base material 2. FIG.

The thickness of the plate material formed by coating the resin layers 2b and 2b on the front and back of the metal plate 2a is desirably about 1 mm at the maximum in order to reduce the weight.
The synthetic resin constituting the resin layers 2b and 2b may be a thermoplastic resin or a thermosetting resin. The synthetic resin is not limited to vinyl chloride, and other synthetic resins may be used.
Thus, by forming the base material 2 by providing the resin layers 2b and 2b on the front and back of the metal plate 2a, it is possible to prevent the rust from being generated from the metal plate 2a, so that the thin and strong base material 2 is formed. be able to.

The vacuum heat insulating material 3 provided in the recess 23 has a substantially rectangular flat plate shape, and includes a core material (not shown) constituting the vacuum heat insulating portion and a packaging material (not shown) that covers the front and back of the core material. ing. In the figure, 30 is the outer surface (upper surface in the illustrated example) of the vacuum heat insulating material 3 disposed on the opening 24 side of the base material 2, and 31 is the inner surface of the vacuum heat insulating material 3 disposed on the inner bottom surface 20 a side of the base material 2 ( In the example of the figure, the lower surface is shown.
Spacer portions 4 are provided at end portions on the inner bottom surface 20 a side of the vacuum heat insulating material 3, specifically, at four corners on the inner surface 31 side of the vacuum heat insulating material 3.
The configuration of the spacer 4 is not particularly limited, and when the vacuum heat insulating material 3 is installed in the recess 23, the foam heat insulating material 5 is filled between the inner surface 31 side and the inner bottom surface 20a of the vacuum heat insulating material 3. As long as the gap d is formed as described above, any member that can support the vacuum heat insulating material 3 may be used.

Therefore, the spacer portion 4 may be made of a block body made of, for example, a resin material or a wooden base material, or the sealing portion around the vacuum heat insulating material 3 is bent, and the bent portion is used as the spacer portion. It is good. The shape in the case where the spacer portion 4 is constituted by a block body is not particularly limited, and may be a substantially prismatic shape as shown in the figure, or may be a cylindrical shape. In the case of the illustrated example, the foamed heat insulating material 5 can be filled into the gap d from between the spacer portions 4 and 4.
In addition, the position where the spacer part 4 is provided is not limited to the illustrated example.
That is, as described above, if the vacuum heat insulating material 3 can be supported in a state in which the foamed heat insulating material 5 is secured between the inner surface 31 and the inner bottom surface 20 a of the vacuum heat insulating material 3, the spacer portion 4 can be replaced by three. It may be provided at a place or at both ends of the vacuum heat insulating material 3.
According to the above, the spacer portion 4 can suppress the displacement or inclination of the installation position of the vacuum heat insulating material 3.

As the core material of the vacuum heat insulating material 3, a material having low thermal conductivity is used, and a foamed body, a granular material, or a fibrous body can be used. For example, examples of the foam include open-cell urethane foam, styrene foam, and phenol foam. Examples of the granular material include inorganic and organic materials, such as those obtained by pulverizing various foam materials, silica, alumina, pearlite, and the like. Examples of the fiber body include inorganic and organic materials, and examples thereof include glass fiber, glass wool, rock wool, and cellulose fiber.
Examples of the packaging material for the vacuum heat insulating material 3 include a metal film having a gas barrier property. For example, a laminated film having a protective layer on the front surface side, a gas barrier layer in the middle, and a heat welding layer on the back surface side may be used.
In addition, the structure and structure of the vacuum heat insulating material 3 are not specifically limited, For example, it is good also as what was arrange | positioned and arrange | positioned in the space enclosed by the frame material.

The recess 23 of the base material 2 of the heat insulating panel 1 is filled with a foam heat insulating material 5 (see FIGS. 3A and 3B), and the foam heat insulating material 5 is injected into the recess 23. The foamed material thus formed is foamed and cured. The foamed material may be a foamed resin material in which a synthetic resin such as urethane resin, polystyrene resin, polyethylene resin, or phenol resin contains a foaming agent or, if necessary, a curing agent or a flame retardant. It is desirable to use a hard isocyanurate foam excellent in flame retardancy. The foam material may be a foam rubber material or an inorganic foam material using calcium carbonate or the like as a raw material.
Although not shown here, a back material may be provided on the opening 24 side of the recess 23 so as to close the opening 24.

At the substantially center in the width direction of the inner bottom surface 20a of the recess 23, a ridge portion 25 formed integrally with the resin layer 2b is provided on the entire length in the longitudinal direction of the base material 2. The ridge portions 25 in the example are formed so as to protrude toward the opening 24, and are formed in a series in the longitudinal direction of the substrate 2.
As shown in FIG. 2B, the vacuum heat insulating material 3 is installed on the front side of the protruding portion 25 in the protruding direction.
The protruding dimension of the ridge part 25 is formed so as to coincide with the height dimension of the spacer part 4 provided in the vacuum heat insulating material 3, and when the vacuum heat insulating material 3 is installed in the recess 23, The ridge portion 25 is disposed between the spacer portions 4 and 4 of the vacuum heat insulating material 3. That is, the vacuum heat insulating material 3 is installed so as to straddle the ridge portion 25, and a gap d is formed between the inner surface 31 and the inner bottom surface 20 a of the vacuum heat insulating material 3 by the ridge portion 25 and the spacer portion 4. Is done.
In addition, the shape of the protrusion part 25 is not limited to the example of a figure, You may make it form a flat surface so that it may be easy to mount the vacuum heat insulating material 3 in the front side.

According to the above, the warp of the base material 2 can be suppressed because the ridge portion 25 is formed at the substantially center in the width direction of the inner bottom surface 20a of the recess 23 and the entire length in the longitudinal direction of the base material 2.
Further, the ridge portion 25 forms a gap d between the inner surface 31 of the vacuum heat insulating material 3 and the inner bottom surface 20a of the base material 2, and the foamed heat insulating material 5 can be filled in the gap d. Therefore, the unevenness | corrugation of the vacuum heat insulating material 3 is transcribe | transferred to the base material 2, and it can prevent that an unevenness | corrugation appears in the base material 2, and the surface of the heat insulation panel 1 can be made smooth.

Next, the outline manufacturing method of the heat insulation panel 1 is demonstrated, referring a figure.
As a manufacturing method of this heat insulation panel 1, various methods, such as a manufacturing method which shape | molds the heat insulation panel 1 by performing various processes continuously, conveying a elongate base material with a conveying apparatus (not shown). Although a manufacturing method can be assumed, only a concept will be illustrated and described below without specifying a manufacturing apparatus.

First, as shown in FIG. 1 and FIG. 2A, the base material 2 is placed so that the opening 24 side of the base material 2 faces upward, and in this state, the vacuum heat insulating material 3 provided with the spacer portion 4 is placed. (See FIG. 2 (b)). At this stage, the installation position of the vacuum heat insulating material 3 in the recess 23 is substantially determined.
Next, as shown in FIG. 3A, the foamed resin 50 is injected into the recess 23 of the substrate 2. The foamed resin 50 spreads into the recess 23 and fills the gap d between the inner surface 31 of the vacuum heat insulating material 3 and the inner bottom surface 20a of the base material 2 through the space between the spacer portions 4 and 4.
After injecting the foamed resin 50, the base material 2 filled with the foamed resin 50 is sandwiched between the double conveyors 6 and 6 including the upper conveyor belt and the lower conveyor belt. In this state, as shown by the arrows in FIG. 3A, the foamed resin 50 is heated while being pressed from above and below the base material 2 to foam, expand, and cure (mold) the foamed resin 50.

When the foamed resin 50 is foamed, a foaming pressure is applied to the base material 2 to push the base material 2 apart. Therefore, when the inner surface 31 of the vacuum heat insulating material 3 is in contact with the inner bottom surface 20a of the base material 2, the unevenness on the surface of the vacuum heat insulating material 3 is transferred to the base material 2, and the outer surface 20b of the base material 2 is uneven. May occur. However, according to the present embodiment, the vacuum heat insulating material 3 is floated by the ridge portions 25 and the spacer portions 4, and the foamed resin 50 can be distributed around the vacuum heat insulating material 3. Therefore, since the vacuum heat insulating material 3 does not contact the inner bottom surface 20a of the substrate 2, the outer surface 20b of the substrate 2 can be smoothed.
Thus, the foamed resin 50 in the recess 23 of the base material 2 is foamed, expanded, and cured to form the foamed heat insulating material 32 (see FIG. 3B).

  As described above, since the vacuum heat insulating material 3 is not in direct contact with the base material 2 in the manufacturing process of the heat insulating panel 1, the unevenness on the surface of the vacuum heat insulating material 3 to be incorporated in the manufacturing process as described above. Transfer to the substrate 2 can be prevented. Of course, since the foam heat insulating material 32 is disposed above and below and around the vacuum heat insulating material 3 even after production, there is no fear of transferring the surface irregularities of the vacuum heat insulating material 3 to the base material. Therefore, such a structure of the heat insulation panel 1 can contribute to the weight reduction and thickness reduction of the base material 2.

  The shapes and configurations of the heat insulating panel 1, the base material 2, the vacuum heat insulating material 3, the ridge portion 25, the spacer portion 4 and the like described in the above embodiment are not limited to the above examples.

DESCRIPTION OF SYMBOLS 1 Heat insulation panel 2 Base material 2b Resin layer 20a Inner bottom face 23 Recess 25 Convex part 3 Vacuum heat insulating material 4 Spacer part 5 Foam type heat insulating material d Crevice

Claims (2)

A heat insulating panel comprising a vacuum heat insulating material, a base material in which the vacuum heat insulating material is accommodated and a recess having a substantially concave cross section is formed, and a foam heat insulating material filled in the recess,
The substrate is coated with a resin layer;
At the approximate center in the width direction of the inner bottom surface of the recess is provided with a ridge formed integrally with the resin layer over the entire length in the longitudinal direction of the base material,
A heat insulating panel, wherein a gap is formed between the vacuum heat insulating material and the inner bottom surface, and the foamed heat insulating material is filled in the space. In claim 1,
The heat insulation panel characterized by the spacer part being provided in the edge part by the side of the said inner bottom face of the said vacuum heat insulating material.

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