JP2005187964A - Foamed heat-insulating board surface paper and foamed heat-insulating board, and method for producing those - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a foamed heat-insulating board which is not warped, even when left outdoors to expose to wind and rain, and can prevent deteriorations caused by the UV rays of solar light, to provide foamed heat-insulating board surface paper used for the same, and to provide methods for producing those. <P>SOLUTION: This foamed heat-insulating board surface paper is produced by impregnating the whole layer of base paper with a mixture liquid comprising 95 to 99.4 mass% of a synthetic resin, 0.1 to 3 mass% of a black pigment or a dye, and 0.5 to 2 mass% of a water-repelling and oil-repelling agent in an amount of 15 to 25 g/m<SP>2</SP>. The base paper is prepared by making paper having a dry basis weight of 60 to 90 g/m<SP>2</SP>from a slurry comprising 20 to 30 mass% of glass fibers and 70 to 80 mass% of organic fibers containing pulp, and then drying the wet paper. The foamed heat-insulating board is produced by supplying a liquid foaming resin raw material on the surface paper to form the raw material layer, thermally foaming the raw material layer, supplying and binding another surface paper to the surface of the foamed resin layer, and further curing the product. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

The present invention relates to a foam insulation board that can be used for building materials such as roofing materials, flooring materials, and wall materials, a foam insulation board surface paper that is used in the production thereof, and a method for producing the same.
Specifically, the foam insulation board that does not warp even if it is left outdoors and is exposed to wind and rain, and can prevent deterioration due to ultraviolet rays of sunlight, and the foam insulation board surface paper used for its production , As well as their manufacturing method.

For building materials such as roofing materials or wall materials, foam heat insulating boards having excellent heat insulating properties are used.
In general, urethane resin and phenol resin are used as the heat insulating material for the foam insulation board, and the surface paper usually called the foam insulation board surface paper on both sides is used to prevent warping. Kraft paper, tankal paper, and glass fiber paper are used for this purpose.
The foam insulation board can be a composite layer laminated with other material layers in addition to the foam insulation resin single layer. In this case, the surface paper is bonded only to one side of the foam insulation resin layer.
Moreover, a plaster board, a plywood board, a quartz board, an iron board, a wood wool cement board etc. are used for another material layer.

Sufficient measures against wind and rain are difficult to expect for storage of building materials at the construction site, and the foam insulation board may be left outdoors and exposed at the construction site, or may become wet after condensation.
Therefore, in the case of a building material using kraft paper or the like containing only pulp as a surface paper, particularly a board having a surface as paper, the surface paper may be stretched when wet, and the board may be shrunk when it is dry.
The glass fiber paper has a feature that the dimensional change with respect to water is small compared to the kraft paper containing only pulp, and the building material can be prevented from being deformed (for example, warped in the case of a board).

[Prior art documents]
JP-A-9-310284 JP, 2001-145970, A As a proposal about this, there is a technique given in patent documents 1, for example. This technology proposes a surface paper mainly composed of glass fibers having an average diameter of 7 μm or more, fibers having an average diameter of 6 μm or less, and a fluorine-based water and oil repellent agent. The highly beaten pulp listed as an example of fibers having an average diameter of 6 μm or less is likely to swell in water when it is blended, and as a result, the bond between the pulp fibers is loosened and the wet tensile strength is significantly reduced. . Further, when beating the pulp to a high degree, it takes a lot of power and time, resulting in poor productivity and high cost.

Moreover, rock wool is also mentioned as a fiber having an average diameter of 6 μm or less.
In the method for producing rock wool, raw materials such as blast furnace slag and basalt are melted at a high temperature of 1,500 to 1,600 ° C. in an electric furnace and blown off by a centrifugal force to form a fiber.
Therefore, in rock wool, grains called shots are mixed in the product, and when rock wool is made, shots are likely to remain in the paper making system, and as a result, it cannot be avoided that they remain in the manufactured paper.

And in patent document 2, the glass fiber sheet which provided the polymer binder layer on the surface of the unsuccessful cloth containing glass fiber and wood pulp is proposed, and the glass fiber in there is used as a reinforcing material of a polymer binder. Demonstrate performance.
The glass fiber sheet also describes that various inorganic fillers for papermaking can be blended for the purpose of reducing the gap, and kaolin clay, calcium carbonate, talc and the like are exemplified.
However, since the polymer binder layer exists only on the surface of the unwoven cloth, it does not help improve the tensile strength.

As a result of diligent research and development to solve the above problems, the present inventor has succeeded in the development of the present invention. Therefore, the present invention can solve the various problems of the prior art described above. The present invention provides a foam insulation board surface paper, a foam insulation board, and a production method thereof.
That is, in the present invention, the foam insulation board is left outdoors in a building site and exposed to wind and rain, or the surface paper gets wet by rainwater infiltrated after construction work or condensed water generated due to cold and warm. Furthermore, the present invention provides a foamed heat insulating board having no reduction in wet strength of the surface paper and excellent in dimensional stability, a foamed heat insulating board surface paper used for the production thereof, and a method for producing them.
The present invention also provides a foam heat insulating board that can avoid the occurrence of warpage and that does not deteriorate due to ultraviolet rays of sunlight when left outdoors and a method for manufacturing the same.

The present invention provides a foam insulation board surface paper that solves the above problems, a foam insulation board using the same, and a method for producing the same, and the foam insulation board surface paper comprises 20 to 30% by mass of glass fiber. And a base paper having a basis weight of 60 to 90 g / m ² after drying, a synthetic polymer resin 95 to 99.4 mass%, a black pigment or dye An impregnating component comprising 0.1 to 3% by mass and a water and oil repellent 0.5 to 2% by mass is uniformly dispersed so as to be 15 to 25 g / m ² in all layers of the base paper. To do.
Moreover, the foam heat insulation board is characterized in that the foam heat insulation board surface paper is bonded to the surface of the foam heat insulation resin body.

And the manufacturing method of foam insulation board surface paper is the basis weight after drying the slurry which mix | blended with the mixing ratio of 20-80 mass% of glass fiber and 70-80 mass% of organic fiber containing pulp 60-90g. / M ² to make paper and dry to produce a base paper, on which the synthetic polymer resin 95-99.4% by weight, black pigment or dye 0.1-3% by weight, and water repellency A mixed liquid of 0.5 to 2% by mass of an oil repellent agent is impregnated so as to be 15 to 25 g / m ² in all layers of the base paper.

Moreover, there are two types of methods for producing a foam insulation board, and the first method is a slurry blended at a mixing ratio of 20 to 30% by mass of glass fibers and 70 to 80% by mass of organic fibers including pulp. Paper is dried so that the basis weight after drying is 60 to 90 g / m ² and dried to produce a base paper. Further, 95 to 99.4% by mass of a synthetic polymer resin is added to the base paper. Foam insulation board by impregnating a mixed liquid of 0.1 to 3% by mass of a pigment or dye and 0.5 to 2% by mass of a water and oil repellent to the entire layer of the base paper so as to be 15 to 25 g / m ^2. Produce surface paper, supply liquid foam resin raw material to the resulting foam insulation board surface paper to form a liquid foam resin layer, heat foam, and then supply another surface paper to the foamed resin layer surface It is characterized by being bonded and further cured.

Furthermore, the manufacturing method of 2 is a basis weight after drying the slurry which mix | blended with the mixing ratio of 20-30 mass% of glass fiber and 70-80 mass% of organic fiber containing a pulp to 60-90 g / m < ² >. The base paper is produced by papermaking and drying, and further, 95-99.4% by mass of a synthetic polymer resin, 0.1-3% by mass of a black pigment or dye, and a water / oil repellent 0 .5 to 2% by mass of a mixed liquid is impregnated in the whole layer of the base paper so as to be 15 to 25 g / m ² to produce a foam heat insulation board surface paper, and the resulting foam heat insulation board surface paper is liquid. Supply a foamed resin raw material to form a liquid foamed resin layer, heat foam, and then supply and bond a plate-like body made of a material other than the surface paper to the foamed resin layer surface and further cure it It is characterized by.

The foam insulation board surface paper of the present invention is composed of 20 to 30% by mass of glass fiber and 60 to 80% by mass of organic fiber containing pulp. As a result, the insulation sheet is left outdoors in a building site. Even if the surface paper is exposed to wind and rain, rainwater permeates after construction work, or the surface paper gets wet by the condensed water generated due to the heat and cold, the wet strength of the surface paper does not decrease, warpage does not occur, Excellent in dimensional stability.
The base paper is impregnated in all layers with a base paper impregnation component consisting of a synthetic polymer resin, a water / oil repellent and a black pigment or dye, and is uniformly dispersed throughout the base paper. The foam insulation board bonded to the base plate does not generate warpage unique to the foam insulation board even when exposed to the outdoors, and does not deteriorate due to ultraviolet rays of sunlight.

In the following, embodiments of the present invention, including the best mode for carrying out the invention, will be described in detail. However, the present invention is not limited thereto, and is specified by the description of the claims. Needless to say, it is something.
The base paper of the foam insulation board surface paper produced in the present invention is made by wet-making a slurry containing 20 to 30% by mass of glass fibers and 70 to 80% by mass of organic fibers containing pulp, Further, it is produced by drying.
The paper is made so that the basis weight after drying is 60 to 90 g / m ² .
Next, this base paper was mixed with 95 to 99.4% by mass of a synthetic polymer resin, 0.1 to 3% by mass of a black pigment or dye, and 0.5 to 2% by mass of a water / oil repellent agent as a solid percentage. The impregnated components are uniformly dispersed throughout the base paper, and the foam insulation board surface paper of the present invention is manufactured.

The amount of glass fiber blended to 20 to 30% by mass with respect to the mass of the base paper is less than 20% by mass when the glass fiber paper is impregnated with the mixed liquid in the subsequent step. This is because the stability exceeds 0.1% and the wet tensile strength at the time of a minute change becomes weak.
On the other hand, when the glass fiber exceeds 30% by mass with respect to the mass of the base paper (conversely, when the organic fiber including pulp is less than 70%), the content of the pulp to which the black pigment or dye is attached becomes too small. This is because an appropriate amount of the colorant cannot be maintained evenly throughout.
Furthermore, since glass fiber is a material that easily transmits ultraviolet rays, if the amount is increased, deterioration of the foamed resin due to ultraviolet rays cannot be prevented.

About the glass fiber used by this invention, a fiber diameter is 6-20 micrometers and a fiber length is 3-18 mm is suitable.
When the fiber diameter of the glass fiber is less than 6 μm, even if the synthetic polymer resin and the water / oil repellent are impregnated, the rigidity and wet tensile strength of the paper are not as strong as expected.
On the other hand, when the fiber warp is 20 μm or more, the fiber warp is too large, and the glass fiber is likely to fall off from the paper, and the glass fiber scatters when processed as a paper making process or subsequent building material. .

In the present invention, organic fibers containing pulp are used for the production of the base paper, and the pulp can be non-wood pulp although wood pulp is preferred.
Wood pulp tree species and pulp produced therefrom can be used without particular limitation, and the former includes, for example, conifers and hardwoods, and the latter includes, for example, softwood kraft pulp (NKP) and hardwood craft. Pulp (LKP), softwood sulfite pulp (NSP), hardwood sulfite pulp (LSP), thermomechanical pulp (TMP), ground wood pulp (GP), etc., and these pulps may be used alone or Two or more kinds may be selectively mixed and used.

Also, the pulp can be beaten and used. In that case, in view of dimensional stability and tensile strength, it is desirable to adjust to a Canadian standard type freeness of 350 mL to 700 mL.
When the freeness is less than 350 mL, the tensile strength is increased, but the dimensional change rate with respect to water is increased and the dimensional stability is deteriorated.
On the contrary, when the freeness exceeds 700 mL, the tensile strength becomes weak.
The organic fiber used in the production method of the present invention can be used other than the above-described pulp, and there are synthetic fibers such as polyvinyl alcohol fiber, polyethylene fiber, and polyester fiber, which can be used as necessary. .
These organic fibers can be melted by heat and bonded to each other or other blends to increase the tensile strength and the like.

In the present invention, when making a base paper, the mixed slurry containing organic fibers and glass fibers mainly composed of pulp is used to increase the paper strength of a cationic polymer compound, an anionic polymer compound or an amphoteric polymer compound. Various conventional paper-making chemicals containing agents can be used, and they can be added as appropriate to make paper by ordinary wet paper-making methods.
There are no particular restrictions on the paper machine used at that time, and various types of paper machines can be used. These include circular paper machines, short paper machines, long paper machines, birch formers, rot formers, hydroformers. For example, the
The same applies to the dryer, and examples include a Yankee type, a multi-cylinder type, and a through type.

The paper strength enhancer comprising the cationic polymer compound is not particularly limited, and various types can be used. For example, cationized starch, cation-modified polyacrylamide resin, polyethyleneimine resin, polyamide epichlorohydrin resin, cation There are various types such as modified guar gum and cationic polyvinyl alcohol.
There are no particular limitations on the paper strength enhancer made of an anionic polymer compound, and various materials can be used, and examples thereof include polyacrylamide resin, polymethacrylamide, and oxidized starch.
Examples of the paper strength enhancer made of an amphoteric polymer compound include polyacrylamide resins, and various types of these can be used without any particular limitation.

Examples of the water / oil repellent include a fluorine-based compound and a silicon-based compound, and various types that are particularly limited can be used, but a fluororesin is preferable.
The amount of impregnation is a small amount of about 0.075 to 0.5 g per 1 m ^{2 of} the surface paper, and this small amount of water and oil repellent such as fluororesin is supplied on the surface paper. The fluororesin for forming the foamed heat insulation layer does not leak from the surface paper.
The black pigment or dye may be used in combination or may be used alone, and a combination of a plurality of pigments and a combination of a plurality of dyes may be used.
As for the pigment or dye, various types can be used without particular limitation as long as it is black and has good compatibility with the synthetic polymer resin or water / oil repellent used by mixing. Examples of the pigment include carbon black, copper / chrome black, cobalt black, and aniline black, and examples of the dye include naphthol blue black and aniline black.

The synthetic polymer resin used in the present invention is not particularly limited as long as it has good water resistance, and includes styrene-butadiene latex, styrene-acryl emulsion, vinyl chloride-acryl emulsion, Or a polyacryl emulsion etc. can be illustrated and 1 type (s) or 2 or more types can be selected and mixed suitably from these.
As a method of mixing the synthetic polymer resin, the water / oil repellent and the black pigment or dye, these solids or liquids are mixed with water as a solvent with a stirrer to obtain an impregnating solution.

As for the method of impregnating the base paper with the impregnating liquid containing the synthetic polymer resin, various impregnation methods are not particularly limited as long as the impregnating liquid spreads over the entire paper layer and the impregnating components can be uniformly dispersed. A size press coater is preferred because it can penetrate into the paper layer.
The impregnation can be performed on-machine that can be continuously processed with papermaking, or can be performed off-machine after papermaking.
The amount of impregnation into the base paper can be adjusted by diluting the concentration of the impregnating solution used with water.

The foam heat insulating board is obtained by bonding a foam heat insulating board surface paper to the surface of the foam heat insulating resin body, and the surface paper is bonded to both surfaces of the plate-like foam heat insulating resin body to prevent warping.
If the board is not a foam insulation resin single layer, but a composite layer laminated with other material layers such as gypsum board, plywood, quartz board, iron plate, wood wool cement board, the surface paper is foam insulation resin Only bonded to one side of the layer.
As the resin used for forming the foam heat insulating resin layer, various resins can be used without particular limitation as long as they are heat insulating and can be used as a building material, but urethane resin, vinyl chloride resin, phenol Resin etc. can be illustrated.

The production of the heat insulation board is performed by supplying a liquid foamed resin raw material on the moving strip-shaped foam heat insulation board surface paper to form the raw material layer, and then heating and foaming the foamed heat insulation board surface paper on the foamed resin layer surface. This can be done by supplying another surface paper of the same material, bonding them, and curing them completely.
In addition, when manufacturing a foam insulation board with a composite layer laminated with other material layers such as gypsum board, iron plate, etc. instead of a single foam insulation resin layer, other materials such as gypsum board, iron plate, etc. The material layers are fed, bonded and fully cured.

In this heat insulating board manufacturing method, a case where a urethane resin is used as a foam heat insulating resin raw material will be described as an example. On a moving strip-shaped foam heat insulating board surface paper, two types of polyol and isocyanate as raw materials for urethane resin are used. A mixed layer is formed by feeding while pouring so as to mix, and then the mixed layer is heated and foamed, and another surface paper of the same material as the foam insulation board surface paper is supplied to the surface of the foamed resin layer To produce a foam insulation board by bonding and fully curing.

Example 1 and a plurality of examples and comparative examples will be described in detail below. However, the present invention is not limited to these examples, and is specified by the description of the scope of claims. Needless to say.
70 parts by mass of organic fibers and glass fibers (fiber length: 10 μm, fiber length: 6 mm, manufactured by Nippon Electric Glass Co., Ltd.) 30 of beef bleached kraft pulp (NBKP) beaten to 600 mL with Canadian standard freeness by a conventional method Mass parts were mixed to form a slurry, and paper was made using a test hand-made square sheet machine.
This paper sheet was dried using a drum dryer set at 120 to 130 ° C. to obtain a base paper 1 having a basis weight of 62.4 g / m ² .

Next, 2 parts by mass of a fluororesin (made by Meisei Chemical Co., Ltd .: trade name Fluorolink), 0.1 part by weight of a black pigment (made by Dainippon Ink and Chemicals, Inc .: trade name RYUDYE-W BLACK RC), acrylic resin (Japan) NSC Co., Ltd .: Brand name AE22) 97.9 parts by mass (both solid content mass) were mixed, and then the mixture was diluted with water so that the solid content concentration was 10% by mass to prepare an impregnation solution. did.
The base paper 1 is immersed in the impregnating liquid, and the impregnated paper obtained by squeezing the excess impregnating liquid with a two-roll size press is dried using a drum type dryer set at 120 to 130 ° C. A surface paper of the present invention having a basis weight of 80.4 g / m ² was obtained.

A basis weight of 89.3 g / m ² was obtained in the same manner as in Example 1 except that 75 parts by mass of organic fibers made of the same pulp as in Example 1 and 25 parts by mass of glass fibers as in Example 1 were mixed to form a slurry. Base paper 2 was obtained.
Next, 1 part by mass of the same fluororesin as in Example 1, 1 part by mass of the same black pigment as in Example 1, and 98 parts by mass of the same acrylic resin as in Example 1 were mixed, and these mixed solutions had a solid content concentration of 12% by mass. A base paper 2 was impregnated in the same manner as in Example 1 except that it was diluted with water to prepare an impregnating solution, and dried to obtain a surface paper having a basis weight of 118.3 g / m ^2. Obtained.

75 parts by mass of the same pulp as in Example 1 and 80 parts by mass of organic fibers consisting of 5 parts by mass of polyvinyl alcohol fiber (manufactured by Kuraray Co., Ltd .: VPB101) and 20 parts by mass of the same glass fiber as in Example 1 were mixed with the slurry. A base paper 3 having a basis weight of 78.6 g / m ² was obtained in the same manner as in Example 1 except that.
Next, 2 parts by mass of the same fluororesin as in Example 1, 3 parts by mass of the same black pigment as in Example 1, and 95 parts by mass of the same acrylic resin as in Example 1 are mixed, and the mixed solution is further 8% by mass. A base paper 3 was impregnated in the same manner as in Example 1 except that it was diluted with water to prepare an impregnating solution, and dried to obtain a surface paper having a basis weight of 95.3 g / m ² .

70 parts by mass of the same pulp as in Example 1 and 73 parts by mass of organic fibers consisting of 3 parts by mass of polyolefin fibers (trade name SWP manufactured by Mitsui Chemicals) and 27 parts by mass of the same glass fibers as in Example 1 were mixed to form a slurry. Except for this, a base paper 4 having a basis weight of 72.3 g / m ² was obtained in the same manner as in Example 1.
Next, 0.5 parts by mass of the same fluororesin as in Example 1, 0.5 parts by mass of the same black pigment as in Example 1, and 99.0 parts by mass of the same acrylic resin as in Example 1 were mixed. The paper was diluted in the same manner, and the base paper 4 was impregnated and dried in the same manner as in Example 1 to obtain a surface paper having a basis weight of 92.5 g / m ² .

[Comparative Example 1]
A base having a basis weight of 84.4 g / m ² was obtained in the same manner as in Example 1 except that 60 parts by mass of the organic fiber made of the same pulp as in Example 1 and 40 parts by mass of the same glass fiber as in Example 1 were mixed to form a slurry. Paper 5 was obtained.
Subsequently, the base paper 5 was impregnated in the same impregnating solution as in Example 1 and dried in the same manner as in Example 1 to obtain a surface paper having a basis weight of 105.9 g / m ² .

[Comparative Example 2]
A base having a basis weight of 50.0 g / m ^{2 in} the same manner as in Example 1 except that 70 parts by mass of the organic fiber made of the same pulp as in Example 1 and 30 parts by mass of the same glass fiber as in Example 1 were mixed to form a slurry. Paper 6 was obtained.
Next, the base paper 6 was impregnated in the same impregnation solution as in Example 2 and dried in the same manner as in Example 2 to obtain a surface paper having a basis weight of 72.9 g / m ² .

[Comparative Example 3]
80 parts by mass of organic fibers made of the same pulp as in Example 1, 85 parts by mass of organic fibers made of 5 parts by mass of the same polyvinyl alcohol fiber as in Example 2, and 15 parts by mass of glass fibers as in Example 1 were mixed to form a slurry. Except for this, a base paper 6 having a basis weight of 71.0 g / m ² was obtained in the same manner as in Example 1.
Next, the base paper 6 was impregnated in the same impregnation solution as in Example 4 and dried in the same manner as in Example 2 to obtain a surface paper having a basis weight of 90.9 g / m ² .

[Comparative Example 4]
A base paper 7 having a basis weight of 63.3 g / m ² is obtained in the same manner as in Example 1 except that 70 parts by mass of the same pulp as in Example 1 and 30 parts by mass of the same glass fiber as in Example 1 are mixed to form a slurry. Obtained.
Next, 1 part by mass of the same fluororesin as in Example 1 and 99 parts by mass of the same acrylic resin as in Example 1 were mixed, and further diluted with water so that the mixed solution had a solid content concentration of 10% by mass. The base paper 2 was impregnated and dried in the same manner as in Example 1 except that it was prepared and used to obtain a surface paper having a basis weight of 82.9 g / m ² .

  About base paper and surface paper manufactured in the above examples and comparative examples, basis weight of both papers in each example, ratio of glass fiber and organic fiber in slurry for base paper production, synthesis in impregnation liquid impregnated into base paper Each ratio of the polymer resin, black pigment (black pigment) and water / oil repellent, and the total solid content (coating amount) of the impregnating liquid component in the surface paper are listed in Table 1 for easy understanding. .

[Performance test of foam insulation board]
A foam insulation board is manufactured using the surface paper manufactured in each example and comparative example, and the warpage test of the urethane foam resin when it is wetted with water, and the color change deterioration of the urethane foam resin surface after irradiation with an ultraviolet lamp. A test was conducted.
The manufacture of the foam insulation board in that case is as follows.
After two-component mixed foamed urethane resin (trade name: Handy Foam, manufactured by Mitsui Chemicals, Inc.) is sandwiched between two surface papers (20 cm square) produced in each Example and Comparative Example, and after foam curing A foam heat insulation board was produced while adjusting the thickness according to the amount of injection so that the thickness of the film became 100 mm.
Since it is as above-mentioned, both surfaces of the produced foam heat insulation board are adhere | attached and coat | covered with surface paper.

[Warp test]
The warpage test of the foam insulation board was performed as follows.
That is, each of the produced foam insulation boards was placed on the floor, the surface paper on one side was wetted with water, and the warpage of the urethane foam resin after 1 hour was measured.
As a measuring method, the distance between the four ends of the board and the floor surface was measured with a caliper. The measurement results are as shown in Table 2.

According to Table 2, the heat insulation board produced using the surface paper of Examples 1 to 4 has a distance between the board and the floor of 1.20 to 1.40 mm, while that of Comparative Examples 2 to 3 The heat insulation board produced using the surface paper has a large distance of 2.01 to 2.10 mm.
That is, it can be seen that the heat insulation board produced using the surface paper of Comparative Examples 2 to 3 has a large warpage of the board.

[Discoloration degradation test]
The discoloration deterioration test of the foam insulation board was performed as follows.
That is, each of the produced foam insulation boards was irradiated with an ultraviolet lamp toward the board surface for 6 hours, and the deterioration state of the urethane foam resin surface in contact with the surface paper was visually observed every hour.
The urethane foam resin is cream-colored after production, but it has already been found that when it is deteriorated by ultraviolet rays, it turns brown. Using this knowledge, a deterioration test was performed on each foam insulation board.

As a result, in the case of the heat insulation board produced using the surface papers of Examples 1 to 4 and Comparative Examples 2 and 3, even after 6 hours of irradiation, the foam color of the heat insulation board is deteriorated by ultraviolet rays without changing the cream color after production. It was confirmed that there was no.
On the other hand, in the case of the heat insulation board produced using the surface paper of Comparative Examples 1 and 4, the color changed to slightly light brown after 1 hour, brown after 2 hours, and brown like burnt after 6 hours. In the case of the heat insulation board produced using the surface paper of both comparative examples, it can be seen that the color change deteriorates.

Claims (6)

Synthetic polymer resin 95-99.4 mass on a base paper containing 20-30 mass% glass fiber and 70-80 mass% organic fiber containing pulp and having a basis weight of 60-90 g / m ² after drying. %, Black pigment or dye 0.1 to 3% by weight, water and oil repellent 0.5 to 2% by weight of the impregnated component is uniformly dispersed in the entire layer of the base paper to be 15 to 25 g / m ² Foam insulation board surface paper, characterized by Synthetic polymer resin 95-99.4 mass on a base paper containing 20-30 mass% glass fiber and 70-80 mass% organic fiber containing pulp and having a basis weight of 60-90 g / m ² after drying. %, Black pigment or dye 0.1 to 3% by weight, water and oil repellent 0.5 to 2% by weight of the impregnated component is uniformly dispersed in the entire layer of the base paper to be 15 to 25 g / m ² A foam insulation board characterized in that the foam insulation board surface paper is bonded to the foam insulation resin body surface. The foam insulation board according to claim 2, wherein one side of the foam insulation resin body is bonded to a plate-like body made of another material. Slurry blended at a mixing ratio of 20 to 30% by mass of glass fiber and 70 to 80% by mass of organic fiber containing pulp is made by paper and dried so that the basis weight after drying by wet is 60 to 90 g / m ^2. A base paper was produced, and a mixed liquid of 95 to 99.4% by mass of a synthetic polymer resin, 0.1 to 3% by mass of a black pigment or dye, and 0.5 to 2% by mass of a water / oil repellent was added to the base paper. Is impregnated so as to be 15 to 25 g / m ² in all layers of the base paper. Slurry blended at a mixing ratio of 20 to 30% by mass of glass fiber and 70 to 80% by mass of organic fiber containing pulp is made by paper and dried so that the basis weight after drying by wet is 60 to 90 g / m ^2. A base paper is manufactured, and further mixed with 95 to 99.4% by mass of a synthetic polymer resin, 0.1 to 3% by mass of a black pigment or dye, and 0.5 to 2% by mass of a water / oil repellent agent. The liquid is impregnated into the whole layer of the base paper so as to be 15 to 25 g / m ² to produce a foam insulation board surface paper, and a liquid foam resin raw material is supplied to the obtained foam insulation board surface paper to form a liquid. A method for producing a foam heat insulating board, comprising forming a foamed resin layer, heating and foaming, then supplying another surface paper to the surface of the foamed resin layer, bonding it, and further curing. Slurry blended at a mixing ratio of 20 to 30% by mass of glass fiber and 70 to 80% by mass of organic fiber containing pulp is made by paper and dried so that the basis weight after drying by wet is 60 to 90 g / m ^2. A base paper is manufactured, and further mixed with 95 to 99.4% by mass of a synthetic polymer resin, 0.1 to 3% by mass of a black pigment or dye, and 0.5 to 2% by mass of a water / oil repellent agent. The liquid is impregnated into the whole layer of the base paper so as to be 15 to 25 g / m ² to produce a foam insulation board surface paper, and a liquid foam resin raw material is supplied to the obtained foam insulation board surface paper to form a liquid. A foamed heat insulation board characterized in that a foamed resin layer is formed, heated and foamed, and then a plate-like body made of a material other than the surface paper is supplied and bonded to the foamed resin layer surface and further cured. Production method.