JPS6032989Y2 - insulation board - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a heat insulating board that is prevented from warping and changing dimensions, and is suitable for use as interior materials such as wall materials.

2. Description of the Related Art Insulating boards having a so-called sandwich-inch structure in which a synthetic resin foam is used as a core material and both sides of the core are covered with aluminum foil have been known.

However, all the aluminum foils used in conventional insulation boards are of a soft type, and insulation boards coated with this soft aluminum foil are susceptible to warping and dimensional changes due to temperature and humidity, and are easily affected by external forces. There are problems such as dents and scratches.

The present invention has improved the above-mentioned circumstances, and can reliably prevent warping and dimensional changes, has high durability and high rigidity that does not easily deform due to external force during construction, and exhibits good heat insulation function. The purpose is to provide insulation boards.

That is, in order to achieve the above-mentioned object, the present invention provides a heat insulating board in which a hard synthetic resin foam is used as a core material and both sides of the core material are covered with face materials. Formed into a structure consisting of an aluminum foil layer, the second layer is an adhesive layer, the third layer is a paper layer, and the fourth layer is a thermoplastic resin layer,
These double-sided materials are arranged so that the fourth layer is on the core material side and are integrated with the core material. Because the oil used in the process adheres and remains, it has poor adhesion with adhesives, other material layers that make up the facing material, and the core material, so it has not been used as a facing material for lamination. By performing treatment, hot air treatment, high-pressure air treatment, etc., oil content can be reliably removed, and when the surface material is constructed using this oil, the adhesive and other material layers constituting the surface material,
It is possible to form a heat insulation board with good adhesion to the core material and excellent adhesion, and the heat insulation board using this hard aluminum foil has very good properties. When using a surface material made by sequentially laminating an adhesive layer, a paper layer, and a thermoplastic resin layer on top of the first layer, dimensional changes and warping can be reliably prevented, and dents and scratches are less likely to occur. , excellent bending rigidity and moisture-proof function,
They discovered that a heat insulating material with excellent adhesiveness could be obtained, and thereby succeeded in providing a heat insulating board with excellent performance that was distantly related to the above objective.

Hereinafter, the present invention will be described with reference to embodiments shown in the drawings.

Figure 1 shows the outline of the heat insulation board of the present invention.
Reference numeral 2.3 indicates a core material made of a hard synthetic resin foam, and 2.3 indicates a front side material and a back surface material which cover the front and back surfaces of the core material 1 and are laminated and integrated.

The present invention has constructed these double-sided materials 2 and 3 into a multilayer structure consisting of a hard aluminum foil layer as the first layer, an adhesive layer as the second layer, a paper layer as the third layer, and a thermoplastic resin layer as the fourth layer. It is a thing,
In this way, hard aluminum foil is used as a component of the face material,
By forming the face material in the above structure, it is possible to effectively prevent warping and dimensional changes of the heat insulating board, and to provide excellent durability and rigidity.

The hard aluminum foil used in this invention is one that is simply work-hardened without any additional heat treatment; for example, JI
S HOOOI-1979, JIS H4160-19
Those indicated by the symbol H0 as described in No. 74 can be used.

In this case, it is necessary to remove oil adhering to the hard aluminum foil during the manufacturing process.

As a method for removing oil, hot air treatment or high pressure air treatment (in the case of these treatments, it is preferable to leave the product in an annealing furnace at 100 to 150°C for about 2 moments to further remove oil); Methods such as alkaline cleaning treatment can also be employed.

This hard aluminum foil is particularly effective in preventing board warping and dimensional changes that occur due to the effects of temperature and humidity, as well as increasing bending rigidity as an insulating board, providing heat reflection effects, and preventing moisture from entering the core material. It also has the effect of preventing intrusion, and the effect of preventing warp deformation and dimensional change is not comparable to that of soft aluminum foil (those that have been subjected to additional heat treatment).

The thickness of this hard aluminum foil is not particularly limited, but
A material having a diameter of 6 to 30 μm is preferably used in terms of performance, ease of manufacture, cost, etc.

In the present invention, as the rigid synthetic resin foam constituting the core material 1, rigid polyurethane foam, polyisocyanurate foam, pheno foam, urea foam, polystyrene foam, etc. may be used, but the ease of manufacture From the viewpoint of heat insulation performance, rigid polyurethane foam and polyisocyanurate foam are preferably used.

2 to 6 are further embodiments of the insulation board shown in FIG. 1, and the insulation board shown in FIG. 2 is an example in which a hard aluminum foil layer 4 is used as a single layer as the front side material 2. This front side member 2 is integrated with the back side member 3 into a plate-shaped core member 1.

In the heat insulation board shown in FIG. 2, the front side material 2 is made up of a single hard aluminum foil layer 4, and this is integrated with the core material 1, so water vapor and water Dimensional changes are reliably prevented without moisture entering the core material 1, and the formation of the highly rigid hard aluminum foil layer 4 reliably prevents warping and deformation, and also prevents dents, scratches, etc. on the surface. Since the board has improved bending rigidity, it can be installed with good stability, especially when used as a ceiling material.

The insulation board shown in Fig. 3 has a two-layer structure consisting of a hard aluminum foil layer 4 laminated with a thermoplastic resin layer 5 such as polyethylene or polypropylene as the surface material 2, and this thermoplastic resin layer 5 is used as the core. It is arranged on the material 1 side and integrated with the core material 1.

By forming this thermoplastic resin layer 5 on the core material 1 side, the bonding strength between the core material 1 and the hard aluminum foil layer 4 is further strengthened, and the moisture-proof function is more reliably exhibited. In addition to the performance of the heat insulating board shown in FIG. 2, the heat insulating board shown in FIG.

Note that the thermoplastic resin layer 5 is characterized by its performance, ease of manufacture,
Polyethylene is particularly preferably used from the viewpoint of cost, and its thickness is not particularly limited, but it is usually 20 to 3
It is about 0μ.

In addition, the heat insulation board shown in FIG. 4 has a hard aluminum foil layer 4 as the first layer, an adhesive layer 6 as the second layer, and
This is an example in which a three-layer structure in which the third layer is a paper layer 7 is used.

In this case, the adhesive layer 6 has the function of a bonding layer between the hard aluminum foil layer 4 and the paper layer 7, and the adhesive layer 6 may include polyethylene, which has a moisture-proof function, in addition to ordinary adhesives. Polyolefin resins such as polypropylene are preferred, and polyethylene is particularly preferred from the viewpoints of adhesive performance, moisture-proof performance, and cost.

Note that the thickness of this adhesive layer 6 is usually about 15 to 20 μm.

The paper layer 7 is made of a material such as liner paper or kraft paper, and is usually formed to a thickness of about 0.1 to 0.5 mm. 1. Functions such as increasing the rigidity of the surface material 2 as a whole are achieved.

Therefore, in addition to the performance of the above-mentioned heat insulating board, the heat insulating board shown in FIG. 4 is excellent in terms of increased rigidity of the entire surface material 2 and ease of manufacturing the surface material.

FIG. 5 shows an embodiment of the present invention, in which a thermoplastic resin layer 8 is further laminated as a fourth layer on the paper layer 7 in the front side material 2 of the heat insulating board shown in FIG. An example is shown in which a layered surface material 2 is integrated with the core material 1 by arranging the thermoplastic resin layer 8 on the core material 1 side.

This thermoplastic resin layer 8 can be formed in the same manner as the thermoplastic resin layer 5 of the heat insulation board shown in FIG. A foam stock solution is supplied between the facing materials 2 and 3, this is foamed to form the core material 1, and the facing materials 2 and 3 and the core material 1 are integrated by self-adhesion to manufacture a heat insulation board. At this time, the foam stock solution is not absorbed into the paper layer 7, and the influence of moisture on the laminated surface is also eliminated.

Although there is no particular limitation on the manufacturing method of the front surface material 2 shown in FIG. A method is preferably adopted in which a hard aluminum foil 4 is formed and finally a hard aluminum foil 4 is laminated and integrated.

In this case, if polyethylene is used as the fourth thermoplastic resin layer 8 and the second adhesive layer 6, a facing material with excellent moisture resistance and adhesive performance can be produced very efficiently and at low cost.

In addition, in the present invention, as shown in Fig. 5, the back side material 3 has the same structure as the front side material 2, thereby reliably preventing dimensional changes and warping deformation, and improving bending rigidity and moisture-proof function. , the adhesion was significantly improved.

Note that a decorative layer can be provided on the surface side of the hard aluminum foil layer 4, and this insulation board is suitable as an interior material for ceiling materials, wall materials, and the like.

In this case, the decorative material can be printed paper with a wood grain pattern, or a polyvinyl chloride sheet that has been decorated with embossing, printing, etc., and these decorative materials are arranged so that the decorative surface is the front surface. A decorative layer can be formed by laminating and integrating this onto the hard aluminum foil layer 4 through a layer of ordinary adhesive or a polyolefin resin made of polyethylene, polypropylene, etc., and this type of decorative layer can be formed. By doing so, the aesthetics, cost, moisture-proofing and heat-insulating functions of the interior material can be improved.

Note that as the decorated polyvinyl chloride sheet, one having a wallpaper mount integrally laminated on the back side is preferably used from the viewpoint of good lamination properties.

In addition to the above-mentioned decorative materials, single-layer or multi-layer sheet materials with appropriate embossing, painting, printing, etc. can also be used, and sheets without such decorative materials can also be used. Alternatively, the decorative layer may be formed by directly painting, printing, etc. on the surface of the hard aluminum foil layer 4.

The back side material 3 of the heat insulation board can be made of the same material as the front side material 2, or it can be made of paper, aluminum foil, plastic film, gypsum board, etc. alone or in an appropriate combination or laminated. Generally, any type of surface material can be used and can be appropriately selected and arranged depending on the purpose of use of the insulation board, the place of use, etc., but in the present invention, the back surface material 3 has the above-mentioned configuration. As a result, the above-mentioned purpose of the present invention was definitely achieved.

There are no particular restrictions on the method of manufacturing the heat insulating board according to the present invention, but for example, the front side material 2 and the back side material 3 are arranged at a predetermined interval, and a synthetic resin foam stock solution is supplied between them. A method can be adopted in which the core material 1 is formed by foaming, and the double-sided materials 2 and 3 are integrated with the core material 1 through self-adhesion.

Alternatively, a hard synthetic resin foam may be cut into a predetermined shape, used as the core material 1, and then bonded to the double-sided materials 2 and 3 using an adhesive or the like.
It may also be integrated with.

Next, the effects of the present invention will be explained in more detail by taking as an example a case where a heat insulating board as shown in FIG. 5 is used.

The first layer of both the front side material 2 and the back side material 3 has a thickness of 2
0μ hard aluminum foil (JIS H4160-19
74S type IN 3D, tempering Hts), second layer thickness 1
A four-layer structure consisting of a 5μ polyethylene film, a 300μ liner paper for the third layer, and a 25μ thick polyethylene film for the fourth layer is used, and these double-sided materials 2.3 are combined with a core material 1 made of rigid polyurethane foam. and the fourth layer of the double-sided materials 2 and 3 were placed on the core material 1 side and integrated to produce a heat insulating board.

Note that the total thickness of this board is 20.5 m.

Next, this insulation board was cut into a size of 900mm x 60mm, placed on a support stand set to a width of 850711211, and the amount of deflection due to oral change was measured under conditions of a temperature of 40°C and a humidity of 90%RH. Warpage deformation was evaluated by measurement.

This insulation board was found to be deflected by about 1 to 2 mm even after 20 days, indicating that warpage was significantly improved.

Also, the length of the insulation board is 60071! IN, width 87
Cut it into 7TIrIIL and store it at a temperature of 40℃ and a humidity of 90℃.
%RH, and dimensional deformation was evaluated by measuring the amount of deformation in the width direction due to oral changes.

As a result, it was found that this insulation board had a dimensional change of less than about 1 TIrIt, which was a great improvement.

As is clear from the above description, the heat insulation board of the present invention uses hard aluminum foil as a component of the face material, and has this hard aluminum as the first layer, an adhesive layer, a paper layer, and a thermoplastic resin layer. By using face materials laminated sequentially as the front and back materials, and arranging these face materials so that the thermoplastic resin layer faces the core material side and integrating them with the core material,
It has excellent stability against temperature, heat, and humidity, and does not warp or deform.
It prevents dimensional changes, has high durability, high rigidity that does not easily deform due to external force during construction, etc., and exhibits a good heat insulation function.

[Brief explanation of drawings]

Fig. 1 is a partially omitted vertical sectional view showing an outline of the present invention, Figs. 2 to 4 are partially omitted longitudinal sectional views showing a heat insulating board shown as a reference example, and Fig. 5 is a partially omitted longitudinal sectional view showing an outline of the present invention. FIG. 2 is a partially omitted vertical cross-sectional view showing an example. 1...core material, 2...surface side material, 3...
...Back side view, 4...Hard aluminum foil layer, 5...Thermoplastic resin layer, 6...Adhesive layer, 7... Paper layer, 8...Thermoplastic resin layer.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A heat insulation board comprising a hard synthetic resin foam as a core material 1 and covering both sides of the core material 1 with face materials 2 and 3, respectively. The first layer is a hard aluminum foil layer 4, the second layer is an adhesive layer 6, the third layer is a paper layer 7, and the fourth layer is a thermoplastic resin layer 8. A heat insulating board characterized in that the fourth layer is arranged on the core material 1 side and integrated with the core material 1. 2. The heat insulation board according to claim 1, wherein the thermoplastic resin layer 8 is a polyethylene layer. 3. The insulation board according to claim 1 or 2, wherein the adhesive layer 6 is a polyethylene layer.