JP2001089583A - Heat-insulating sheet for interior and exterior, and heat-insulating material for building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that a building material such as metal sash is curved by heat or suffered from moisture condensation, or the like, and remove defects occurring in the case of lining a building material with a decorated sheet. SOLUTION: This heat-insulating sheet 1 for interiors or exteriors is constructed basically by laminating a polymeric binder layer 3 containing hollow particles and bubbles on a fibrous base material 2. More preferably, the heat- insulating sheet has a part 4 into which the polymeric binder layer has penetrated from the surface to the inside of the fibrous base material. On the uppermost layer, a decorated sheet 5 may be laminated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating sheet for interior and exterior use and a heat insulating construction member which can be used for interior and exterior of buildings, fittings, vehicles and the like.

[0002]

2. Description of the Related Art A metal sash is often used for an opening of a building. However, the metal sash has a high thermal conductivity. Have disadvantages such as moisture generated by heating being condensed on the sash surface. For this reason, the cooling and heating efficiency may be deteriorated, and further improvement in heat insulation properties is desired from the viewpoint of preventing global warming. The metal sash may have a decorative sheet attached to its surface by lapping. In this case, however, the decorative sheet has the same drawbacks as above, and also has a deterioration (for example, discoloration and fading) of the decorative sheet over time. Peeling, deviation, etc. from the existing state occur. Building components other than sashes have the same drawbacks as above, to varying degrees.

[0003]

SUMMARY OF THE INVENTION In the present invention, it is possible to eliminate the problem that architectural members such as metal sashes have defects such as warpage and dew condensation. An object of the present invention is to solve various drawbacks occurring in a sheet.

[0004]

The above object is achieved by using a polymer binder layer having closed cells formed of hollow particles and / or air bubbles as a heat insulating layer and laminating the heat insulating layer on a building member. The problem is solved by laminating on a substrate.

The first invention relates to a heat insulating sheet for interior / exterior use, wherein a fibrous base material is impregnated with a polymer binder layer containing hollow particles and / or air bubbles. The second invention is characterized in that, in the first invention, a high molecular binder layer containing hollow particles or / and air bubbles is impregnated except for the vicinity of the front surface of the fibrous base material. The present invention relates to a heat insulating sheet for interior and exterior use. The third invention relates to the heat-insulating sheet for interior / exterior use according to the first or second invention, wherein a decorative layer is further laminated. The fourth invention is the first invention
A heat insulating sheet for interior and exterior, wherein the heat insulating sheet for interior and exterior according to any one of the third to third aspects is laminated on a surface of the building member.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a heat insulating sheet for interior and exterior use 1 according to the present invention basically comprises a fibrous base material 2 impregnated with a polymer binder layer 3 containing closed cells. It is. Alternatively, as shown in FIG. 2, the heat insulating sheet 1 for interior and exterior of the present invention is one in which the polymer binder layer 3 containing closed cells is impregnated except for a part of the fibrous base material 2. Is also good.

The fibrous base material 2 is preferably a nonwoven fabric or paper, and is not particularly limited, but the weight per unit area is preferably 100 g / m ² or less. Further, as described later, since the polymer binder layer 3 as the upper layer of the fibrous base material 2 is manufactured by applying a coating composition, the adhesiveness between the fibrous base material 2 and the polymer binder layer 3 is improved. From the viewpoint, the air permeability is 100 seconds / 1
It is preferably not more than 00 cm ³ . When a film of plastics or the like or a nonwoven fabric exceeding 100 g / m ² is used as a base material, the adhesiveness, particularly, the adhesiveness after foaming of the polymer binder layer 3 is not sufficient. This is not impregnating,
Or it is considered to be scarce.

The polymer binder layer 3 is a layer having a function of imparting heat insulating properties to the heat insulating sheet for interior and exterior use 1 of the present invention, and has a large number of closed cells therein. By doing so, convection of air can be suppressed and heat conduction can be minimized. Specifically, the myriad of closed cells in the polymer binder layer 3 are formed of one or both of cells generated by foaming a foaming agent and hollow particles.

Generally, in order to apply and foam a coating composition, a gas, particularly an inert gas, preferably a gas having a low thermal conductivity, or a chemical blowing agent comprising an organic compound is mechanically added to the coating composition. After application, the mixture is heated and foamed. In the present invention, general blowing agents can be used. Among them, as the chemical blowing agent, azo blowing agents such as azodicarbonamide or azobisisobutyronitrile, benzenesulfonylhydrazide, or p- Examples include sulfonyl hydrazide such as toluenesulfonyl hydrazide, nitroso such as dinitrosopentamethylenetetramine, sodium bicarbonate, and ammonium bicarbonate.

A microcapsule type foaming agent in which a low boiling point hydrocarbon such as isobutane or neopentane is encapsulated in the outer wall of an acrylonitrile resin or the like is suitable for relatively low-temperature foaming and is a preferred foaming agent. As such a microcapsule type foaming agent, for example, Matsumoto Yushi Seiyaku Co., Ltd.
Foaming agent (F-46, F-50, F-55,
F-80 or F-85 can be used, and these have a foaming ratio of 20 times or more, and are preferable. When a chemical foaming agent is used, a foaming aid for lowering the foaming temperature to facilitate foaming may be used, if necessary.

As the hollow particles, those having an outer wall made of an organic or inorganic material can be used, and those made of an organic material such as a phenol resin, an acrylic resin, an acrylonitrile resin, or a polystyrene resin, and those made of an inorganic material such as a shirasu balloon. Can be used. Among the former hollow particles having the outer wall of an organic material, the microcapsule-type foaming agent described in the preceding paragraph, before being added to the coating composition, also includes those corresponding to foamed ones. For example, hollow particles (product number, F-80ED or F-80E) manufactured by Matsumoto Yushi Seiyaku Co., Ltd. have a small density of 0.02 g / cm ^3, and are therefore effective in suppressing thermal conductivity. And it is preferable to use them.

The polymer binder layer 3 is composed of bubbles and hollow particles formed by foaming the above-mentioned foaming agent. To produce the polymer binder layer 3, foaming agent, hollow particles,
A polymer binder, and a solvent, and, with various additives to be blended as necessary, together with the coating composition prepared by dissolving or dispersing, by appropriate means, applied to a fibrous base material, dried, Overheat and foam.

As the polymer binder, nitrocellulose, cellulose acetate, cellulose butyrate acetate, ethyl cellulose, polyamide resin, chlorinated rubber, cyclized rubber, polyamide resin, polyvinyl chloride resin, vinyl chloride / vinyl acetate copolymer resin, polyacetic acid Vinyl resin, ethylene / vinyl acetate copolymer resin, chlorinated polypropylene, acrylic resin, polyurethane resin, polystyrene resin, styrene malee resin, polyvinyl alcohol resin, polyvinyl acetal (polyvinyl formal, polyvinyl butyral, etc.) resin, cyanoacrylate resin, polyvinyl alkyl Ether resin, polyvinyl chloride, epoxy resin, urea resin, melamine resin, phenol resin, resorcinol resin, furan resin, epoxy resin, unsaturated polyester resin, polyimi Resins, polyamide-imide resin, polybenzimidazole resin, from among such polybenzothiazole resins, according to the application, selected and used singly or in combination.

Also, natural rubber, recycled rubber, sutylene-
Butadiene rubber, acrylonitrile-butadiene rubber,
Chloroprene rubber, butyl rubber, polysulfide rubber,
Silicone rubber, polyurethane rubber, stereo rubber (synthetic natural rubber), ethylene propylene rubber, block copolymer rubber (SBS, SIS, SEBS, etc.) can also be used.

As additives to be added as required, there are an antifoaming agent, a surfactant, a dispersant, an antisettling agent, a foaming aid and the like. Note that the hollow particles and the microcapsule-type foaming agent may be coated with silicone oil or silicone resin to enhance waterproofness.

Means for applying the coating composition to the fibrous base material include known coating layer means such as roll coating, gravure coating, spray coating, curtain flow coating, and pouring, or silk. Printing means such as screen printing, flexo printing, and gravure printing can also be used, and it is preferable that the thickness of the coating film be large. However, considering the stability and drying properties of the coating, the drying state before foaming the blowing agent It is preferable to form a coating film having a thickness of about 20 μm to 500 μm.

After the application, drying by heating is carried out by a suitable drying means. In some cases, the material is left to dry naturally before the heating and drying, or so-called air drying by applying only air, and then heating and drying.

The foaming may be carried out after the above-mentioned drying or foaming while drying. Either method is employed depending on the kind of the foaming agent, the foaming temperature and the like.

As shown in FIG. 1, the interior / exterior heat insulating sheet 1 having a structure in which the fibrous base material 2 is impregnated with the polymer binder layer 3, when a decorative sheet or the like is to be laminated on the upper surface side, Adhesion is not always sufficient. For this reason,
When impregnating the fibrous base material 2 with the polymer binder layer 3, the polymer binder layer 3 is penetrated from the side where the polymer binder layer 3 is formed by coating toward the inside, but up to the opposite surface. Fig. 2
It is preferable to leave a portion 4 of only the nonwoven fabric as shown in FIG. In FIG. 2, the application is performed upside down, so that the side to which the decorative sheet is attached is on the upper side.

The thickness of the portion of the fibrous base material 2 impregnated with the polymer binder layer is determined by the density and thickness of the fibrous base material 2 and the proportion of closed cells such as hollow particles and air bubbles in the polymer binder layer 3. It is preferably at least 2 μm, more preferably at least 10 μm, depending on the type.
It is preferable that the thickness is about the same as

In the heat insulating sheet 1 for interior and exterior of the present invention, the polymer binder layer 3 side impregnated in the fibrous base material 2 is exposed,
Often exposed. For this reason, in order to maintain the appearance harmony with the surrounding building members, it is preferable to laminate the decorative sheet 5 on the surface and apply makeup as shown in FIG. 3 or FIG. FIG. 3 shows a state in which the decorative sheet 5 is laminated on the surface of FIG. 1, and FIG. 4 shows a state in which the decorative sheet 5 is laminated on the surface of FIG.

The decorative sheet 5 is obtained by applying a decorative material to an appropriate sheet substrate. As the sheet substrate, any material that is usually used in the field of decorative sheets can be used, and broadly classified, various papers, plastic films or plastic sheets, metal foils, or metal sheets And so on.

The material for the sheet substrate included in each of the above groups may be used alone, but may be any combination of these materials such as a composite of paper and a composite of paper and plastic film. Can also be used. The sheet substrate may be originally colored, or may be painted or patterned at the time of manufacture. Prior to painting or forming a normal pattern, the surface may be smoothed, or a base treatment may be applied to increase the degree of adhesion between the coating film and the pattern. After painting or forming a normal pattern, an adhesion improving treatment for facilitating subsequent processing may be performed.

The following are typical examples of various papers for sheet substrates. That is, thin paper, kraft paper, titanium paper, and resin-impregnated paper that has been impregnated with a resin in advance for the purpose of reinforcing between papers can be used. In addition to these, a group of raw materials often used in the field of building materials, such as linter paper, paperboard, gypsum board raw paper, or vinyl wallpaper raw material provided with a vinyl chloride resin layer on the surface of paper, may be mentioned. Further, the following papers used in the office field, ordinary printing, packaging, and the like can also be used. That is, coated paper, art paper,
Examples include parchment paper, glassine paper, parchment paper, and Japanese paper. Although different from these papers, woven or nonwoven fabrics of the following various fibers having the same appearance and properties as paper can also be used as the sheet base.

Examples of the plastic film or plastic sheet for the sheet substrate include those made of various synthetic resins as exemplified below. Various synthetic resins include polyethylene resin, polypropylene resin, polymethylpentene resin, polyvinyl chloride resin, polyvinylidene chloride resin, polyvinyl alcohol resin, and vinyl chloride resin.
Vinyl acetate copolymer resin, ethylene-vinyl acetate copolymer resin, ethylene-vinyl alcohol copolymer resin, polyethylene terephthalate resin, polybutylene terephthalate resin, polyethylene naphthalate-isophthalate copolymer resin, polymethyl methacrylate resin, polymethacrylic acid Ethyl resin, polybutyl acrylate resin, nylon 6
Or a polyamide resin represented by nylon 66, a cellulose triacetate resin, a cellophane, a polystyrene resin, a polycarbonate resin, a polyarylate resin, a polyimide resin, or the like.

There are various types of makeup applied to the sheet substrate, but typically, coloring, patterning, unevenness processing,
Or by surface painting.

Coloring is the most basic cosmetic technique. In the present invention, the layer 3 is colored by coating the upper polymer binder layer 3 with a coloring paint or by blending a coloring agent in a coating composition for forming the polymer binder layer 3. Good to do. Alternatively, it can be colored by applying a colored transparent or opaque film. At the time of patterning, a base color suitable for patterning may be adjusted by coloring.

Patterning is representative of makeup. Usually formed by a combination of color and shape,
A pattern can also be formed by forming an area having a different material texture and gloss. The pattern of the pattern may be either a character or a pattern, and the pattern may be either concrete or abstract. As a technique for forming the pattern, a manual technique such as hand-drawing or pasting of a cut-out pattern is possible, but as an industrial technique, printing is used, and any known printing method can be used. For example, lithographic offset printing, letterpress printing, gravure printing, engraving intaglio printing, silk screen printing, or the like. Although it differs from conventional printing in that a visible plate is not made, an inkjet method or an electrophotographic method can also be used.

The unevenness gives a texture different from the original appearance of the sheet substrate. As the shape of the unevenness, there are those that imitate the unevenness of the surface of the goods that already exist in the world, hit with the texture of cloth, unevenness of the surface of wooden boards, cracks on the surface of stone such as marble, hammer etc. There are irregularities on the finished surface. Further, there may be a case where an uneven shape matching the shape of each pattern is formed. There is gloss on the surface of the decorative sheet, which is slightly different from the apparent unevenness. The gloss is adjusted by changing the shape of the fine irregularities on the surface of the decorative sheet. The above-mentioned various uneven shapes can be arbitrarily combined.

[0030] The unevenness is usually formed on a surface by using a concavo-convex processing plate or a concavo-convex processing roll having a surface opposite to the above-mentioned concavo-convex shape, or by heating as necessary. It is performed by pressing against the material.

Wiping coating is involved in the concavo-convex processing. In this method, the formed concave portion is filled with a coloring agent (ink or paint), and excess is scraped off and removed.
Specifically, ink or paint is supplied to the surface of the decorative sheet having irregularities by an appropriate means, and the surface is scraped off with a squeegee. As an example, if a concave portion imitating a conduit pattern of wood is formed, and a concave colorant such as brown is filled in the concave portion and excess is removed, a decorative sheet with a strong impression of the conduit pattern of the wood is provided. Can be obtained.

The surface of the decorative sheet 5 may be subjected to surface painting or the like to form a surface protective layer to improve the physical or chemical durability of the surface. Although a thermoplastic resin can be used as the resin binder of the paint for surface coating, it is preferable to use a thermosetting resin from the viewpoint of improving durability. For example, a surface protective layer formed using a coating material containing a polyurethane resin as a binder is preferable because it is flexible and has excellent abrasion resistance and the like. Furthermore, by using an ionizing radiation-curable paint containing an ultraviolet-curable or electron-beam-curable polymer, prepolymer, oligomer, or monomer, a more durable surface protective layer can be formed.

The heat insulating sheet 1 for interior and exterior of the present invention is used for interior and exterior of buildings, fittings, vehicles and the like. FIG. 5 is a cross-sectional view showing an example in which the interior / exterior heat insulating sheet 1 of the present invention is applied to a building member in the form of a panel 6. On one side of the panel 6 in which plates 8 and 8 'are punched on the front and back of a frame 7, The heat insulating sheet 1 for interior and exterior is affixed thereto. The panel 6 and the interior / exterior heat insulating sheet 1 may be fixed with an adhesive, a pressure-sensitive adhesive, a double-sided pressure-sensitive adhesive tape, a heat sealant, a wire, or the like. Since the heat-insulating sheet 1 for interior and exterior is attached to the panel 6 or the like, the heat-insulating sheet 1 for interior and exterior is used.
May be applied to the building member in advance by applying a pressure-sensitive adhesive, an adhesive (for example, rewetting paste), or a heat-sealing agent on the back surface thereof to provide an adhesive layer.

FIG. 6 shows the heat insulating sheet 1 for interior and exterior according to the present invention.
Is a cross-sectional view showing an example in which is applied to a rod-shaped building member, reference numeral 9 is a hollow quadrangular prism, and has a rod-like shape having a cutout portion parallel to the length direction on one side surface. The heat insulating sheet 1 for interior and exterior is coated on the outside. The fixation between the rod-shaped body 9 and the heat-insulating sheet 1 for interior and exterior is the same as in the case of the panel 6 in the previous paragraph, and also a point that an adhesive layer may be provided on the back surface of the heat-insulating sheet for interior and exterior. Same as in the previous paragraph.

The architectural members to which the heat insulating sheet for interior and exterior 1 of the present invention is applied are not limited to those shown in FIGS. 5 and 6, but include various shapes. For example, a relatively large plate-shaped, panel-shaped thing, roof material, partition material, outer wall material such as curtain wall, etc., or exterior relations such as fence, lattice, gate, roof deck, terrace, or balcony, Opening members such as window frames, window glass doors, and doors can be exemplified.

[0036]

EXAMPLES (Examples) A coating material for forming a heat insulating sheet was mixed and adjusted according to the following composition. <Coating composition> 27 parts by weight of hollow particles (Matsumoto Yushi Pharmaceutical, F80-ED, outer wall; acrylonitrile resin diameter: 20 to 80 μm, specific gravity; 0.02 g / cm ³ , solid content; 15%) Blowing agent 57 parts by weight Part (Matsumoto Yushi Pharmaceutical, F-55, outer wall; acrylonitrile resin ethylene / vinyl acetate copolymer 100 parts by weight (Chuo Rika, BE-920, solid content 50% by weight)

As a sheet base material, an acrylic fiber non-woven fabric (Shaleria C-1025 manufactured by Asahi Kasei Kogyo Co., Ltd.) is prepared, and the above-mentioned coating composition is applied to one surface by a comma coater. After leaving the surface opposite to the coated surface of the non-woven fabric of acrylic fiber, it was permeated and dried at 120 ° C. for 1 minute to obtain a dried impregnated layer having a thickness of 200 μm. Foam, thickness 1
A heat insulating sheet having a heat insulating layer of 1 mm was obtained.

A decorative sheet to be stuck on the above-mentioned heat insulating sheet was prepared as follows. Using a biaxially stretched film of a polypropylene resin as a sheet substrate, both surfaces were subjected to a corona discharge treatment, then colored by a roll coating method, and printed thereon to form a pattern, thereby obtaining a patterned sheet.
Separately, acrylic resin film (Mitsubishi Rayon, MB
After preparing S-207) and performing corona treatment on one side in advance, the sheet is superposed on the pattern of the patterned sheet so that the corona treated side is in contact with the pattern, and both are thermally fused at a temperature of 150 ° C. At the same time, the surface was roughened to obtain a decorative sheet.

The polypropylene resin film side of the decorative sheet obtained above and the exposed surface side of the non-woven fabric of the previously prepared heat insulating sheet were coated on the decorative sheet side with a polyurethane resin adhesive having the following composition by roll coating. 15g
/ M ² and bonded together by dry lamination. After pasting, it was cured at a temperature of 40 ° C. for 3 days to improve the adhesive strength, and a final heat insulating sheet for interior and exterior was obtained. <Compounding of polyurethane resin adhesive> Main agent 100 parts by weight (manufactured by Dainichi Seika Co., Ltd., E-295L, solid content: 70%) Isocyanate curing agent 10 parts by mass (manufactured by Dainichi Seika Co., Ltd., C75N-3, solid content; 60) %) E-295L, solid content; 70%)

The heat-insulating sheet for interior and exterior obtained in the above embodiment was attached to the bottom of an aluminum boat-shaped container, and the container was placed in an environment at room temperature of 20 ° C. and relative humidity of 30% (dew point of 4 ° C.). When floating in a water tank with ice water at 0 ° C,
In the equilibrium state, the temperature of the aluminum surface at the bottom of the boat-shaped container was 1 ° C, and the temperature of the surface of the heat insulating sheet for interior and exterior attached was 7 ° C.

[0041]

According to the first aspect of the present invention, a fibrous base material,
In addition, since both layers of the polymer binder layer containing hollow particles and air bubbles are laminated, the heat insulating property is excellent, and when applied to a building member, between the surface of the interior and exterior heat insulating sheet and the building member. Heat conduction can be suppressed, and therefore, the point that the building member has defects such as warpage and dew condensation is eliminated.
It is possible to provide an interior / exterior heat insulating sheet that can eliminate various defects generated in the decorative sheet when the decorative sheet is attached. According to the invention of claim 2, in addition to the effect of the invention of claim 1,
Since the polymer binder layer is impregnated in the fibrous base material on the side of the polymer binder layer, the adhesion between the fibrous base material and the polymer binder layer is improved, and the interior / exterior insulation having sufficient adhesive strength between the layers is provided. Can be provided. According to the invention of claim 3, in addition to the effect of the invention of claim 1 or claim 2, since the decorative layer is provided on the uppermost layer, when applied to various objects, the appearance is excellent, and It is possible to provide a heat insulating sheet for interior / exterior use which does not easily cause discomfort. According to the fourth aspect of the present invention, since the heat insulating sheet for interior and exterior according to any one of the first to third aspects is applied to a building member, the heat insulating property in which the points having the defects such as warpage and dew condensation are eliminated. High building members can be provided.

[Brief description of the drawings]

FIG. 1 is a sectional view of a heat insulating sheet for interior and exterior use.

FIG. 2 is a sectional view of a heat insulating sheet for interior and exterior use.

FIG. 3 is a cross-sectional view of a heat insulating sheet for interior and exterior in which decorative sheets are laminated.

FIG. 4 is a cross-sectional view of a heat insulating sheet for interior and exterior in which decorative sheets are laminated.

FIG. 5 is a cross-sectional view showing a state in which the heat insulating sheet for interior and exterior is attached to a panel-shaped building member.

FIG. 6 is a cross-sectional view showing a state where the heat insulating sheet for interior and exterior is attached to a rod-shaped building member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heat insulation sheet for interior and exterior 2 Fibrous base material 3 Polymer binder layer 5 Decorative sheet 6 Panel 9 Rod-shaped body

Continued on the front page F-term (reference) 2E001 DD01 FA07 FA09 FA10 FA16 FA18 FA31 FA32 FA33 GA03 GA06 GA09 GA23 GA24 GA28 GA76 GA82 GA85 HC07 HD11 HE01 HE06 JA14 LA04 LA16 4F072 AB29 AB31 AD01 AD02 AD04 AD05 AD06 AD08 AD13 AD21 AD23 AD44 AD45 AD46 AE14 AE22 AG03 AG16 AH26 AJ04 AK02 AK05 AL02 AL17 4F074 BA03 BA04 BA13 BA14 BA16 BA18 BA38 BA39 BA91 BC01 CA29 CC04X CC22Y CC28Y CE02 CE44 CE46 CE47 CE48 CE49 CE54 CE55 CE56 CE59 CE65 CE98 DA32 DA44 DA54 4F100 AK01 BA25 AK01 CA01 CB02 DE04A DG06A DG15 DJ01A EJ82A GB08 GB33 HB00B HB21 HB31 JJ02A JK06 JL04 JL07

Claims (4)

[Claims] An interior / exterior heat insulating sheet characterized in that a fibrous base material is impregnated with a polymer binder layer containing hollow particles and / or air bubbles. 2. The interior / exterior material according to claim 1, wherein a polymer binder layer containing hollow particles and / or air bubbles is impregnated except for the vicinity of the front surface of the fibrous base material. Insulating sheet. 3. The heat-insulating sheet for interior / exterior use according to claim 1, further comprising a decorative layer laminated thereon. 4. A heat-insulating building material for interior and exterior, wherein the heat-insulating sheet for interior and exterior according to any one of claims 1 to 3 is laminated on a surface of the building material.