JPWO2013168766A1 - Window shading and insulation panel - Google Patents

Abstract

An object of the present invention is to provide a light-shielding and heat-insulating panel for windows that is used as an energy-saving measure to reduce an air-conditioning load by being attached to a window glass of a building with an adhesive tape or the like. A heat insulating base material layer provided with a film layer on one side or both sides of a heat insulating base material layer having a large number of through holes or a heat insulating base material layer not provided with a film layer and mounted on the inside of a window to block light. In the light-shielding / heat-insulating panel having heat insulation and transparency, the heat-insulating base material has a thickness of 2 to 7 mm, a through-hole diameter of 2 to 7 mm, an opening ratio of 45% or more, and a hole diameter. : The ratio of the hole depth is set in the range of 2: 1 to 1: 1. Adhesive double-sided tape with release paper, either double-sided adhesive tape with release paper consisting of a micro-suction layer on one side and an adhesive layer on the other side, or a double-sided adhesive double-sided tape with holes formed in each adhesive double-sided tape Is attached in advance so that the surface of the adhesive layer faces the multilayer structure.

Description

  The present invention relates to a light-shielding and heat-insulating panel for windows used as an energy-saving measure to reduce an air-conditioning load by attaching and attaching an adhesive tape or the like inside a window glass of a building.

  As a conventional light shielding heat insulator for windows, for example, a heat insulating film is attached to a window glass, or a blind or a light shielding curtain is used. However, in the blind and the light-shielding curtain, a gap is generated between the window glass and the blind and the room temperature is raised by convection when the air in the gap is heated. In addition, it is often difficult for an amateur to apply a heat insulating film to a window glass without entraining wrinkles or air, and it is often unsatisfactory in the finish. On the other hand, although the blinds and the light-shielding curtains have a light-shielding effect, they have a problem that the view from the room is lost and the entire room becomes dark because of lack of transparency. Therefore, the invention of the louver disclosed in Patent Document 1 is disclosed as means for solving such a problem. According to this invention, it is comprised so that a through-hole may be drilled uniformly in the blade piece which comprises a louver, and it may install in the window side by the arrangement | positioning relationship which substantially faces the incident direction of sunlight. Although there is a description that the through hole has a diameter of 0.5 to 3.0 mm and an opening ratio of 10 to 70% with respect to the surface area, the relationship between the diameter and depth of the through hole drilled in the blade plate It is not described at all, and is completely different from the technical idea of the present invention in which the transmission of hot summer solar heat is blocked by a multilayer structure in which film layers are provided on both sides of the heat insulating base material layer.

JP 2000-154688 A

  As a result of earnest research to solve the above problems, the inventor of the present application causes a multilayer structure in which a film layer is provided on one side or both sides of a heat-insulating base material layer having a large number of through holes to be closely attached to a window glass. This prevents convection of air in the heat-insulating base material layer and suppresses intrusion of heat into the room, and also determines the diameter and depth of the through hole from the relationship between the cross section of the through hole and the solar altitude (sunlight angle). It was discovered that the solar heat in summer can be efficiently blocked by appropriately setting the thickness of the base material), and the present invention has been achieved. The main object of the present invention is to provide a heat-insulating base material layer. Properly set the hole diameter and depth of the through-holes to be drilled, or provide film layers on both sides of the heat-insulating base material layer to form a multilayer structure with a static air layer, thereby blocking the transmission of solar heat and circulating Reduces heat and has transparency, To provide a light-shielding-insulating panel for windows with adherence to easily window peel off the shape paper.

In order to solve the above-described problems, the present invention provides a light-shielding / mounting film that is mounted on the inside of a window composed of a multilayer structure in which a film layer is provided on one or both sides of a heat-insulating substrate layer having a large number of through holes. In the insulation panel,
The heat insulating substrate layer is composed of at least one of nonwoven fabric, felt, three-dimensional woven fabric or thermoplastic resin foam, and the thickness of the heat insulating substrate layer is 2 mm or more,
The hole diameter of the through hole is 2 to 7 mm, the opening ratio is 45% or more, and the ratio of hole diameter: hole depth is set in the range of 2: 1 to 1: 1. A shading / insulating panel for windows.

In order to solve the above-mentioned problems, the present invention attaches to the inside of a window composed of a multilayer structure in which a film layer is provided on one side or both sides of a heat-insulating base material layer having a large number of through holes. For shading / insulating panels,
The heat insulating substrate layer is composed of at least one of nonwoven fabric, felt, three-dimensional woven fabric or thermoplastic resin foam, and the thickness of the heat insulating substrate layer is 2 mm or more,
The hole diameter of the through hole is 2 to 7 mm, the opening ratio is 45% or more, and
The diameter D of the through hole, the depth L of the through hole, and the solar altitude α at the equinox / autumn estimated at the place of use are as follows: D / L ≦ tan α
It is set as the shading and heat insulation panel for windows characterized by satisfying the above.

  Further, in order to solve the above-mentioned problems, the present invention provides the multilayer structure in which the film layer is provided on the entire surface of the heat insulating base material layer, or only on the heat insulating base material layer surface excluding the through holes. It is preferable to use the light-shielding / heat-insulating panel for windows described above, which is made of any one of those provided with a film layer.

In order to solve the above problems, the present invention provides a light-shielding and heat-insulating panel that is attached to the inside of a window made of a heat-insulating base material layer having a large number of through holes,
The heat insulating substrate layer is composed of at least one of nonwoven fabric, felt, three-dimensional woven fabric or thermoplastic resin foam, and the thickness of the heat insulating substrate layer is 2 mm or more,
The hole diameter of the through hole is 2 to 7 mm, the opening ratio is 45% or more, and the ratio of hole diameter: hole depth is set in the range of 2: 1 to 1: 1. A shading / insulating panel for windows.

In order to solve the above problems, the present invention provides a light-shielding and heat-insulating panel that is attached to the inside of a window made of a heat-insulating base material layer having a large number of through holes,
The heat insulating substrate layer is composed of at least one of nonwoven fabric, felt, three-dimensional woven fabric or thermoplastic resin foam, and the thickness of the heat insulating substrate layer is 2 mm or more,
The hole diameter of the through hole is 2 to 7 mm, the opening ratio is 45% or more, and
The diameter D of the through hole, the depth L of the through hole, and the solar altitude α at the equinox / autumn estimated at the place of use are as follows: D / L ≦ tan α
It is set as the shading and heat insulation panel for windows characterized by satisfying the above.

  In order to solve the above-mentioned problems, the present invention provides a spunbonded nonwoven fabric in which the heat insulating base material layer is a glass fiber and a polypropylene fiber mixed in equal amounts and heat-fused at knots, or foamed polystyrene. The window light-shielding and heat-insulating panel is characterized in that it is composed of any one of a sandwich structure having a synthetic resin film, synthetic paper, or other paper film on both sides. preferable.

  In order to solve the above-mentioned problems, the present invention provides a plan view of about 10,000 fine suction cups per square centimeter on one side of the light-shielding and heat-insulating panel for windows, each having a concave recessed hole with a diameter of 1 μm to 300 μm. The window, characterized in that it is a micro-suction layer arranged side by side, and an adhesive double-sided adhesive tape with release paper whose other side is made of an adhesive layer is attached in advance so that the adhesive layer surface faces the multilayer structure side It is preferable to use a light-shielding and heat-insulating panel.

The window shading / insulating panel according to the present invention is a film layer on one or both sides of the heat-insulating base material layer, in which the hole diameter and depth of the through holes drilled in the heat-insulating base material layer are appropriately set as described above. The following effects are obtained.
(1) Efficiently blocks the transmission of solar heat and creates a static space by providing a film layer on one or both sides of the heat-insulating base material, thereby reducing the reflux heat and thus reducing the heating / cooling load and contributing to energy saving.
(2) By providing transparency, it is possible to obtain an outdoor view from the inside of the room and to prevent the room from becoming dark like a light-shielding curtain, creating a bright environment space and reducing the burden caused by unnecessary lighting. Useful for further energy saving measures.
(3) It is possible to obtain an indoor blindfold effect such as a lace curtain depending on the aperture ratio, and a special decorative effect can be obtained by coloring the film layer or printing a pattern.
(4) Since it can be easily attached to and detached from the window simply by removing the release paper of the double-sided tape, and it does not take time, it contributes to the expansion of the range of use. If you use a double-sided tape with holes, you can prevent air entrainment and wrinkles, and it looks better.
(5) It can be repeatedly attached and detached by using a double-sided adhesive tape with release paper, one side of which is a micro sucker layer and the other side is an adhesive layer.
(6) Prepare both a film layer provided on the entire surface of the heat-insulating base material layer and a film layer provided on the top surface of the heat-insulating base material layer excluding through-holes, to provide heat insulation, transparency and economy. Selection is possible depending on the purpose of use such as sex.
(7) Precut shipment as a cut product that matches the window frame dimensions eliminates the need for construction and is more convenient.
(8) Since the structure is simple and repairs and maintenance due to failure are unnecessary, it is extremely advantageous from an economical viewpoint.

(A) is sectional drawing of the light-shielding and heat insulation panel for windows which concerns on this Embodiment, (b) is sectional drawing which mounted | wore the window light-shielding and heat insulation panel of (a) to the window glass, (c) These are sectional drawings of the other light-shielding and heat insulation panel for windows which concern on this Embodiment, (d) is sectional drawing which mounted | wore the window glass with the light-shielding and heat insulation panel for windows of (c). It is explanatory drawing which shows the relationship between solar height (sunlight angle) (alpha), the hole diameter D, and the depth L of a hole. (B) is a front view of a double-sided adhesive tape with a hole, and (a) is a front view in which a double-sided adhesive double-sided tape is attached to one side of a window shading / insulating panel. It is the photograph figure which looked at the outdoors in the state which mounted | wore the window glass with the light-shielding and heat insulation panel for windows which concerns on an Example. (A) is sectional drawing of the light-shielding and heat insulation panel for windows which concerns on another Example, (b) is sectional drawing which mounted | wore the window glass with the light-shielding and heat insulation panel for windows of (a). It is a graph which shows the temperature change of the room which mounts | wears with the window light-shielding and heat insulation panel which concerns on an Example, or is not mounted | worn. It is a table | surface which shows the result of having measured the power consumption of the air conditioner of the room which mounts | wears with the window light-shielding and heat insulation panel which concerns on an Example, or is not mounted | worn.

  Modes for carrying out the present invention (hereinafter referred to as “embodiments”) will be described in detail below. However, the present invention is not limited to such an embodiment. The light-shielding and heat-insulating panel for windows according to the embodiment of the present invention is mounted inside a window composed of a multilayer structure in which a film layer is provided on one or both sides of a heat-insulating base material layer having a large number of through holes. In the shading / insulating panel, the through hole has a hole diameter of 2 to 7 mm, an aperture ratio of 45% or more, and the ratio of the hole diameter to the hole depth is set to a range of 2: 1 to 1: 1. It is characterized by.

  In the embodiment of the present invention shown in FIG. 1, 1 is a light shielding / insulating panel for windows, 11 is a heat-insulating base material layer, 12a and 12b are film layers, 13 is a through hole, 14 Is an adhesive double-sided tape, and 15 is a release paper. The heat insulating base material layer 11 has a large number of through holes 13 formed on the entire surface. The material of the heat insulating base material layer 11 is not particularly limited as long as it has heat insulating properties, but is made of natural fiber, synthetic fiber, inorganic fiber, or a mixture of these, woven fabric, knitted fabric, non-woven fabric or felt, for example Further, a nonwoven fabric or a felt by a dry method such as a needle punch method, a spun bond method, a stitch bond method, a thermal bond method or a chemical bond method, or a wet method is used. Nonwoven fabrics, felts, three-dimensional woven fabrics, and the like in which glass fibers and polypropylene fibers (hereinafter abbreviated as “PP fibers”) are mixed in equal amounts and heat-sealed at the knots are preferred because they are lightweight and have an appropriate rigidity. For example, an NGP sheet manufactured by Nippon Glass Fiber Industries, Ltd. is preferable.

  In addition to the above-mentioned fiber-based non-woven fabric, etc., a foam in which a thermoplastic resin is mixed with a foaming agent, the foaming agent is thermally decomposed under heating, and the resin is foamed with the decomposed gas, It is also possible to use sponges made of closed cells. Examples of the thermoplastic resin include polyurethane (PU), polyethylene (PE) polypropylene (PP), polystyrene (PS), and polyvinyl chloride (PVC). The open cell body and the closed cell body may not always be clearly separated, but the closed cell body is preferable in terms of the ability to suppress the fluidity of the air for the purpose of heat insulation. Furthermore, a sandwich structure with a thermoplastic resin foam or a film (including the above-mentioned film, synthetic paper, or other paper) on both sides, such as a polystyrene foam, and various functional papers. Sekisui Plastics Co., Ltd. Eslen (registered trademark) wood panels are preferred. The shape of the through hole is not particularly limited. For example, a circular shape, a square shape, a character pattern, or the like may be arranged regularly or in a dotted shape. The through hole is not particularly limited, but, for example, the punching method or the punching method in which a base material is usually sandwiched between a press plate in which a large number of punching blades are planted and a receiving plate is punched or punched. preferable. Alternatively, a method of punching between a rotating hot needle roll and a backup roll may be used.

  The thickness of the heat insulating substrate is not particularly limited as long as it has a heat insulating property or a light shielding property, but it is preferably set to 2 mm or more and the depth of the through hole or more. If it is thinner than 2 mm, a sufficient heat insulating effect may not be obtained. The diameter of the through hole is preferably 2 to 7 mm. The opening ratio is preferably 45% or more. If the aperture ratio is less than 45%, the transparency may not be sufficient. On the other hand, increasing the aperture ratio is preferable as long as the heat insulating property can be maintained because the transparency is improved. Here, the aperture ratio refers to a numerical value expressed as a percentage of the total hole area per unit area. The ratio of hole diameter: hole depth is preferably set in a range of 2: 1 to 1: 1. The ratio of the hole diameter to the hole depth will be described below with reference to Table 1 and FIG.

Table 1 shows the solar altitude (sunlight angle) by region and date, and FIG. 2 shows the relationship between the solar altitude (sunlight angle) and the hole cross section, that is, the hole diameter and the depth of the hole or the thickness of the insulating base material. It is shown.
α: solar altitude (sunlight angle), D: hole diameter, L: hole depth,
G: Summer Solstice, SN: Spring / Autumn, T: Winter Solstice
The relationship between solar altitude (sunlight angle) α, hole diameter D and hole depth L in spring or autumn (SN) is: D / L = tan α (1)
It becomes.
D / L <tan α (2)
That is, if the hole diameter and the hole depth are set so as to satisfy the relationship (1) or (2), the hot summer sunlight (heat) is blocked by the heat insulating base material and the warm winter sun Light (heat) can be introduced into the room through the through hole.

  From Table 1, the solar altitude α for spring and autumn (SN) is 63.0 in Okinawa, 54.1 in Tokyo, and 46.6 in Sapporo. FIG. 2 substitutes the numerical value for α in (1) to obtain the hole depth L for the hole diameter D of 7.0 mm, and approximates the depth L in Okinawa (a), Tokyo (b), and Sapporo (c). As shown in FIG. Since the values of tan α = D / L obtained by substituting a numerical value for α in (1) are 1.96, 1.38, and 1.05, respectively, the ratio of hole diameter: hole depth (D: L) Was set in a range of 2: 1 to 1: 1, and it was possible to handle all over Japan. Thus, the application range of the light-shielding and heat-insulating panel for windows of the present invention is not limited to the domestic one, as long as the hole diameter D and the hole depth L satisfy the relationship (1) or (2). The solar altitude α can be dealt with (claim 2). Further, when the shape of the through hole is a hole other than a circle, the hole diameter D is based on the vertical length of the hole.

  The thermoplastic resin film constituting the film layer is not particularly limited. For example, a polypropylene (PP) film, a polyethylene (PE) film, a general-purpose polystyrene (GP-PS) film, an impact-resistant polyethylene ( HI-PS) film, biaxially oriented polystyrene (OPS) film, polyester (PET) film, polycarbonate (PC) film, polyvinyl alcohol (PVA) film, polyvinyl chloride (PVC) film, ionomer film, cellulosic plastic film, It can be selected according to the purpose of use from a thermoplastic elastomer film or the like. Furthermore, in addition to the single film as described above, it may be a multilayer film bonded by dry lamination or sand lamination through a co-extruded film or an adhesive resin layer. The film layer is usually provided on both sides of the heat insulating base material layer, but for example, only the film 12a in FIG. 1 may be provided. Or as long as light-shielding property and a partial heat insulation effect are acquired, it is not necessary to provide a film layer. In addition, the “film” in the present invention widely includes sheets and other film strips regardless of the thickness.

  In addition, when a window light-shielding / heat-insulating panel made of a heat-insulating base material having a through hole without a film layer is attached to a window glass, the heat-insulating base material with the through hole formed in the window glass. The intrusion of heat into the room is suppressed by tightly contacting and suppressing the flow of outside air and room air and preventing air convection. The present invention also includes a light-shielding / heat-insulating panel for windows made of a heat-insulating base material in which the through-holes are not provided without such a film layer (see claims 4 and 5, examples, and FIG. 5).

  The method for laminating the film layer on the heat insulating substrate layer is not particularly limited. For example, if the film layer and the heat insulating substrate layer are the same material or similar materials, the heated pressure roll and the backup roll are interposed. It can be welded by passing, and can be laminated by a topping or doubling method by a calendar method like PVC. Moreover, you may laminate | stack by interposing the adhesive agent with near SP value. The adhesive may be any of a solvent type, an emulsion type, and a hot melt type. Furthermore, what formed the film with the roll coater, the knife coater, etc. on the release paper may be transferred. In addition, in order to provide a film layer only on the surface of the heat-insulating base material layer excluding the through holes of the heat-insulating equipment layer, film layers are formed on both surfaces of the heat-insulating base material layer before the holes are formed in advance. What is necessary is just to drill a through-hole by the said drilling method in a layer structure. Furthermore, it is more efficient because a double-sided adhesive double-sided tape can be obtained if a through hole is formed after the double-sided adhesive tape with release paper is attached to one side of the multilayer structure (see FIGS. 1 and 3). ). Alternatively, the perforated film layer may be formed by coating a resin with a coater on both top surfaces of the heat insulating base material layer having holes.

  Next, the adhesive double-sided tape used in the embodiment of the present invention is made of a synthetic resin film having an adhesive layer on both sides, and is usually formed into a long roll shape in which release papers covering the adhesive layer surface are overlapped. Supplied. The material of the synthetic resin film is not particularly limited. For example, polyolefin resin such as polyethylene or polypropylene, ethylene / vinyl acetate copolymer, polyvinyl chloride, various elastomers, or copolymers or mixtures thereof may be used. The The release paper is preferably paper coated with a release agent such as silicone resin or polyolefin resin.

  In addition, the adhesive double-sided tape with release paper, one side of which is a micro sucker layer and the other side is an adhesive layer, has, for example, approximately 10,000 fine suction cups per square centimeter in the form of concave recessed holes having a diameter of about 1 μm to 300 μm. A micro-suction layer in which the particles are stably arranged is formed and can be easily applied and peeled, and can also be adsorbed to a certain uneven surface. Furthermore, printing on the sucker surface is possible, and it is resistant to heat and has adsorption up to 80 ° C. and heat resistance of 200 ° C.

  Next, examples will be described. A light-shielding / heat-insulating panel for windows was prepared based on the above embodiment. The heat-insulating base material layer is a 4mm thick spunbond nonwoven fabric (NGP sheet manufactured by Nippon Glass Fiber Industries Co., Ltd.) with the same diameter of glass fiber and PP fiber mixed and heat-bonded at the knots. A hole formed by punching by a punching method so that the aperture ratio was 50% was used. A transparent polyester film having a thickness of 0.05 mm is bonded to both surfaces of the heat insulating substrate through a transparent polyester adhesive to create a multilayer structure, and the multilayer structure is adjusted to the size of the window glass. Three-sided adhesive double-sided tape with release paper, one-sided adhesive double-sided tape, adhesive double-sided tape with one side of the micro-suction layer and the other side adhesive layer, and double-sided adhesive tape with holes A plurality of samples of the window shading / insulating panel affixed to each were prepared.

  Next, each said sample was affixed on the window glass, and the room temperature when not mounting | wearing with the light-shielding and heat insulation panel for windows was measured. As a result, when the outside air temperature is about 25 ° C, the room temperature when the window shading / insulating panel is not installed was about 25 ° C, which is almost the same as the outside temperature. The room temperature was about 20 to 19 ° C., and a heat insulation effect of about 5 to 6 ° C. was observed. Also, regarding the ease of sticking the panel by the type of adhesive double-sided tape, compared to general-purpose adhesive double-sided tape, the double-sided adhesive double-sided tape is easy to handle because it does not entrain air and is difficult to wrinkle, and one side is an adhesive with a micro sucker layer. In the case of the double-sided tape, it was confirmed that the adsorptivity does not decrease even when the attachment and detachment are repeated a plurality of times. Furthermore, with regard to the transparency, it was confirmed that the outside scenery can be viewed from the window equipped with the light shielding / insulating panel for windows (see FIG. 4).

  Next, a PS foam board made of polystyrene having a thickness of 2.5 mm with a through hole having a φ4 × 7 mm pitch was used as the heat insulating substrate in the above example, except that the film was not bonded to this heat insulating substrate. A light-shielding and heat-insulating panel for windows similar to that in the above example was prepared (Example 1). Moreover, in the light shielding / heat insulating panel for windows of Example 1, a light shielding / heat insulating panel for windows was prepared by sticking a transparent polyester film having a thickness of 0.05 mm on both sides of a heat insulating substrate with a transparent polyester adhesive. (Example 2). A plurality of samples were prepared by cutting the light-shielding and heat-insulating panels for windows of Example 1 and Example 2 into appropriate sizes. FIG. 6 shows the results of measuring the room temperature with and without the window shading / insulating panel attached (comparative example) with each of the above samples attached to a window glass. As shown in FIG. 6, the window shading / insulating panel (Example 1) in which the film is not bonded to the heat insulating substrate is compared with the comparative example in which the window shading / insulating panel is not mounted. -It turns out that it is excellent in the heat insulation effect similarly to a heat insulation panel (Example 2). At 17:00 in FIG. 6, Example 1 has a temperature difference of 9 ° C. and Example 2 has a temperature difference of 11.5 ° C. compared to the comparative example. FIG. 7 shows the power consumption measured when the indoor air conditioner is operated and the room temperature is set to 26 ° C. From these results, it was found that Example 1 had a power saving effect of 17% compared to the comparative example, and Example 2 had a power consumption effect of 23%. Moreover, the heat insulation effect which prevents the convection of air and suppresses the penetration | invasion of the heat | fever indoors by sticking the light-shielding and heat insulation panel for windows of Example 1 which does not bond a film to a heat insulation base material from this experiment to a window glass. (See FIGS. 6 and 7). Furthermore, it was confirmed that the light shielding / insulating panel for windows of Example 1 was excellent in light shielding properties and transparency as with the window shading / insulating panels of Example 2.

  The light-shielding and heat-insulating panel for windows according to the present invention appropriately sets the hole diameter and depth of the through-hole drilled in the heat-insulating base material layer as described above, and film layers on both surfaces or one surface of the heat-insulating base material layer. It consists of a heat-insulating base material layer that does not have a multi-layer structure or a film layer provided, and is attached to the inside of a window glass of a building with adhesive tape etc., and is extremely economical as an energy-saving measure to reduce the heating and cooling load Useful.

1: light-shielding / heat-insulating panel for windows, 11: heat-insulating base material layer, 12a, 12b: film layer, 13: through hole, 14: adhesive double-sided tape, 15: release paper,
S: Sun, G: Window glass

  The present invention relates to a light-shielding and heat-insulating panel for windows used as an energy-saving measure to reduce an air-conditioning load by attaching and attaching an adhesive tape or the like inside a window glass of a building.

  As a conventional light shielding heat insulator for windows, for example, a heat insulating film is attached to a window glass, or a blind or a light shielding curtain is used. However, in the blind and the light-shielding curtain, a gap is generated between the window glass and the blind and the room temperature is raised by convection when the air in the gap is heated. In addition, it is often difficult for an amateur to apply a heat insulating film to a window glass without entraining wrinkles or air, and it is often unsatisfactory in the finish. On the other hand, although the blinds and the light-shielding curtains have a light-shielding effect, they have a problem that the view from the room is lost and the entire room becomes dark because of lack of transparency. Therefore, the invention of the louver disclosed in Patent Document 1 is disclosed as means for solving such a problem. According to this invention, it is comprised so that a through-hole may be drilled uniformly in the blade piece which comprises a louver, and it may install in the window side by the arrangement | positioning relationship which substantially faces the incident direction of sunlight. Although there is a description that the through hole has a diameter of 0.5 to 3.0 mm and an opening ratio of 10 to 70% with respect to the surface area, the relationship between the diameter and depth of the through hole drilled in the blade plate It is not described at all, and is completely different from the technical idea of the present invention in which the transmission of hot summer solar heat is blocked by a multilayer structure in which film layers are provided on both sides of the heat insulating base material layer.

JP 2000-154688 A

  As a result of earnest research to solve the above problems, the inventor of the present application causes a multilayer structure in which a film layer is provided on one side or both sides of a heat-insulating base material layer having a large number of through holes to be closely attached to a window glass. This prevents convection of air in the heat-insulating base material layer and suppresses intrusion of heat into the room, and also determines the diameter and depth of the through hole from the relationship between the cross section of the through hole and the solar altitude (sunlight angle). It was discovered that the solar heat in summer can be efficiently blocked by appropriately setting the thickness of the base material), and the present invention has been achieved. The main object of the present invention is to provide a heat-insulating base material layer. Properly set the hole diameter and depth of the through-holes to be drilled, or provide film layers on both sides of the heat-insulating base material layer to form a multilayer structure with a static air layer, thereby blocking the transmission of solar heat and circulating Reduces heat and has transparency, To provide a light-shielding-insulating panel for windows with adherence to easily window peel off the shape paper.

In order to solve the above-described problems, the present invention provides a light-shielding / mounting film that is mounted on the inside of a window composed of a multilayer structure in which a film layer is provided on one or both sides of a heat-insulating substrate layer having a large number of through holes. In the insulation panel,
The heat insulating substrate layer is composed of at least one of nonwoven fabric, felt, three-dimensional woven fabric, polyurethane foam or thermoplastic resin foam, and the thickness of the heat insulating substrate layer is 2 mm or more,
The hole diameter of the through hole is 2 to 7 mm, the opening ratio is 45% or more, and the ratio of hole diameter: hole depth is set in the range of 2: 1 to 1: 1. A shading / insulating panel for windows.

In order to solve the above-mentioned problems, the present invention attaches to the inside of a window composed of a multilayer structure in which a film layer is provided on one side or both sides of a heat-insulating base material layer having a large number of through holes. For shading / insulating panels,
The heat insulating substrate layer is composed of at least one of nonwoven fabric, felt, three-dimensional woven fabric, polyurethane foam or thermoplastic resin foam, and the thickness of the heat insulating substrate layer is 2 mm or more,
The hole diameter of the through hole is 2 to 7 mm, the opening ratio is 45% or more, and
The diameter D of the through hole, the depth L of the through hole, and the solar altitude α at the equinox / autumn estimated at the place of use are as follows: D / L ≦ tan α
It is set as the shading and heat insulation panel for windows characterized by satisfying the above.

  Further, in order to solve the above-mentioned problems, the present invention provides the multilayer structure in which the film layer is provided on the entire surface of the heat insulating base material layer, or only on the heat insulating base material layer surface excluding the through holes. It is preferable to use the light-shielding / heat-insulating panel for windows described above, which is made of any one of those provided with a film layer.

In order to solve the above-mentioned problems, the present invention provides a light-shielding and heat-insulating panel that is attached to the inside of a window made of a heat-insulating base material layer having a large number of through holes,
The heat insulating substrate layer is composed of at least one of nonwoven fabric, felt, three-dimensional woven fabric, polyurethane foam or thermoplastic resin foam, and the thickness of the heat insulating substrate layer is 2 mm or more,
The hole diameter of the through hole is 2 to 7 mm, the opening ratio is 45% or more, and the ratio of hole diameter: hole depth is set in the range of 2: 1 to 1: 1. A shading / insulating panel for windows.

In order to solve the above problems, the present invention provides a light-shielding and heat-insulating panel that is attached to the inside of a window made of a heat-insulating base material layer having a large number of through holes,
The heat insulating substrate layer is composed of at least one of nonwoven fabric, felt, three-dimensional woven fabric, polyurethane foam or thermoplastic resin foam, and the thickness of the heat insulating substrate layer is 2 mm or more,
The hole diameter of the through hole is 2 to 7 mm, the opening ratio is 45% or more, and
The diameter D of the through hole, the depth L of the through hole, and the solar altitude α at the equinox / autumn estimated at the place of use are as follows: D / L ≦ tan α
It is set as the shading and heat insulation panel for windows characterized by satisfying the above.

In order to solve the above-mentioned problem, the present invention provides a spunbonded nonwoven fabric in which the heat insulating base material layer is a mixture of glass fibers and polypropylene fibers and heat-bonded knots, or expanded polystyrene. The window light-shielding and heat-insulating panel is characterized in that it is composed of any one of a sandwich structure having a synthetic resin film, synthetic paper, or other paper film on both sides. preferable.

In order to solve the above-mentioned problems, the present invention provides a micro sucker layer in which fine suckers each having a recessed depression hole on one side are arranged on one side of the light-shielding and heat-insulating panel for windows. The light shielding for windows described above, wherein the adhesive double-sided tape with release paper whose surface is made of an adhesive layer is attached in advance so that the adhesive layer surface faces the multilayer structure side or the heat insulating substrate layer side. It is preferable to use an insulating panel.

The window shading / insulating panel according to the present invention is a film layer on one or both sides of the heat-insulating base material layer, in which the hole diameter and depth of the through holes drilled in the heat-insulating base material layer are appropriately set as described above. The following effects are obtained.
(1) Efficiently blocks the transmission of solar heat and creates a static space by providing a film layer on one or both sides of the heat-insulating base material, thereby reducing the reflux heat and thus reducing the heating / cooling load and contributing to energy saving.
(2) By providing transparency, it is possible to obtain an outdoor view from the inside of the room and to prevent the room from becoming dark like a light-shielding curtain, creating a bright environment space and reducing the burden caused by unnecessary lighting. Useful for further energy saving measures.
(3) It is possible to obtain an indoor blindfold effect such as a lace curtain depending on the aperture ratio, and a special decorative effect can be obtained by coloring the film layer or printing a pattern.
(4) Since it can be easily attached to and detached from the window simply by removing the release paper of the double-sided tape, it does not take time and thus contributes to the expansion of the range of use. If you use a double-sided tape with holes, you can prevent air entrainment and wrinkles, and it looks better.
(5) It can be repeatedly attached and detached by using a double-sided adhesive tape with release paper, one side of which is a micro sucker layer and the other side is an adhesive layer.
(6) Prepare both a film layer provided on the entire surface of the heat-insulating base material layer and a film layer provided on the top surface of the heat-insulating base material layer excluding through-holes, to provide heat insulation, transparency and economy. Selection is possible depending on the purpose of use such as sex.
(7) Precut shipment as a cut product that matches the window frame dimensions eliminates the need for construction and is more convenient.
(8) Since the structure is simple and repairs and maintenance due to failure are unnecessary, it is extremely advantageous from an economical viewpoint.

(A) is sectional drawing of the light-shielding and heat insulation panel for windows which concerns on this Embodiment, (b) is sectional drawing which mounted | wore the window light-shielding and heat insulation panel of (a) to the window glass, (c) These are sectional drawings of the other light-shielding and heat insulation panel for windows which concern on this Embodiment, (d) is sectional drawing which mounted | wore the window glass with the light-shielding and heat insulation panel for windows of (c). It is explanatory drawing which shows the relationship between solar height (sunlight angle) (alpha), the hole diameter D, and the depth L of a hole. (B) is a front view of a double-sided adhesive tape with a hole, and (a) is a front view in which a double-sided adhesive double-sided tape is attached to one side of a window shading / insulating panel. It is the photograph figure which looked at the outdoors in the state which mounted | wore the window glass with the light-shielding and heat insulation panel for windows which concerns on an Example. (A) is sectional drawing of the light-shielding and heat insulation panel for windows which concerns on another Example, (b) is sectional drawing which mounted | wore the window glass with the light-shielding and heat insulation panel for windows of (a). It is a graph which shows the temperature change of the room which mounts | wears with the window light-shielding and heat insulation panel which concerns on an Example, or is not mounted | worn. It is a table | surface which shows the result of having measured the power consumption of the air conditioner of the room which mounts | wears with the window light-shielding and heat insulation panel which concerns on an Example, or is not mounted | worn.

  Modes for carrying out the present invention (hereinafter referred to as “embodiments”) will be described in detail below. However, the present invention is not limited to such an embodiment. The light-shielding and heat-insulating panel for windows according to the embodiment of the present invention is mounted inside a window composed of a multilayer structure in which a film layer is provided on one or both sides of a heat-insulating base material layer having a large number of through holes. In the shading / insulating panel, the through hole has a hole diameter of 2 to 7 mm, an aperture ratio of 45% or more, and the ratio of the hole diameter to the hole depth is set to a range of 2: 1 to 1: 1. It is characterized by.

  In the embodiment of the present invention shown in FIG. 1, 1 is a light shielding / insulating panel for windows, 11 is a heat-insulating base material layer, 12a and 12b are film layers, 13 is a through hole, 14 Is an adhesive double-sided tape, and 15 is a release paper. The heat insulating base material layer 11 has a large number of through holes 13 formed on the entire surface. The material of the heat insulating base material layer 11 is not particularly limited as long as it has heat insulating properties, but is made of natural fiber, synthetic fiber, inorganic fiber, or a mixture of these, woven fabric, knitted fabric, non-woven fabric or felt, for example Further, a nonwoven fabric or a felt by a dry method such as a needle punch method, a spun bond method, a stitch bond method, a thermal bond method or a chemical bond method, or a wet method is used. Nonwoven fabrics, felts, three-dimensional woven fabrics, and the like in which glass fibers and polypropylene fibers (hereinafter abbreviated as “PP fibers”) are mixed in equal amounts and heat-sealed at the knots are preferred because they are lightweight and have an appropriate rigidity. For example, an NGP sheet manufactured by Nippon Glass Fiber Industries, Ltd. is preferable.

In addition to the above-mentioned fiber-based non-woven fabric, etc., a foam in which a thermoplastic resin is mixed with a foaming agent, the foaming agent is thermally decomposed under heating, and the resin is foamed with the decomposed gas, It is also possible to use sponges made of closed cells. Examples of the resin constituting the foam include polyurethane (PU), polyethylene (PE) polypropylene (PP), polystyrene (PS), and polyvinyl chloride (PVC). The open cell body and the closed cell body may not always be clearly separated, but the closed cell body is preferable in terms of the ability to suppress the fluidity of the air for the purpose of heat insulation. Furthermore, a sandwich structure in which polyurethane foam or a thermoplastic resin foam is bonded to one or both sides with a film (including the above-mentioned film, synthetic paper, and other papers), for example, various functions on both sides of a polystyrene foam. Sessui Kasei Kogyo Co., Ltd.'s Eslen (registered trademark) wood panel is preferred. The shape of the through hole is not particularly limited. For example, a circular shape, a square shape, a character pattern, or the like may be arranged regularly or in a dotted shape. The through hole is not particularly limited, but, for example, the punching method or the punching method in which a base material is usually sandwiched between a press plate in which a large number of punching blades are planted and a receiving plate is punched or punched. preferable. Alternatively, a method of punching between a rotating hot needle roll and a backup roll may be used.

  The thickness of the heat insulating substrate is not particularly limited as long as it has a heat insulating property or a light shielding property, but it is preferably set to 2 mm or more and the depth of the through hole or more. If it is thinner than 2 mm, a sufficient heat insulating effect may not be obtained. The diameter of the through hole is preferably 2 to 7 mm. The opening ratio is preferably 45% or more. If the aperture ratio is less than 45%, the transparency may not be sufficient. On the other hand, increasing the aperture ratio is preferable as long as the heat insulating property can be maintained because the transparency is improved. Here, the aperture ratio refers to a numerical value expressed as a percentage of the total hole area per unit area. The ratio of hole diameter: hole depth is preferably set in a range of 2: 1 to 1: 1. The ratio of the hole diameter to the hole depth will be described below with reference to Table 1 and FIG.

Table 1 shows the solar altitude (sunlight angle) by region and date, and FIG. 2 shows the relationship between the solar altitude (sunlight angle) and the hole cross section, that is, the hole diameter and the depth of the hole or the thickness of the insulating base material. It is shown.
α: solar altitude (sunlight angle), D: hole diameter, L: hole depth,
G: Summer Solstice, SN: Spring / Autumn, T: Winter Solstice
The relationship between solar altitude (sunlight angle) α, hole diameter D and hole depth L in spring or autumn (SN) is: D / L = tan α (1)
It becomes.
D / L <tan α (2)
That is, if the hole diameter and the hole depth are set so as to satisfy the relationship (1) or (2), the hot summer sunlight (heat) is blocked by the heat insulating base material and the warm winter sun Light (heat) can be introduced into the room through the through hole.

  From Table 1, the solar altitude α for spring and autumn (SN) is 63.0 in Okinawa, 54.1 in Tokyo, and 46.6 in Sapporo. FIG. 2 substitutes the numerical value for α in (1) to obtain the hole depth L for the hole diameter D of 7.0 mm, and approximates the depth L in Okinawa (a), Tokyo (b), and Sapporo (c). As shown in FIG. Since the values of tan α = D / L obtained by substituting a numerical value for α in (1) are 1.96, 1.38, and 1.05, respectively, the ratio of hole diameter: hole depth (D: L) Was set in a range of 2: 1 to 1: 1, and it was possible to handle all over Japan. Thus, the application range of the light-shielding and heat-insulating panel for windows of the present invention is not limited to the domestic one, as long as the hole diameter D and the hole depth L satisfy the relationship (1) or (2). The solar altitude α can be dealt with (claim 2). Further, when the shape of the through hole is a hole other than a circle, the hole diameter D is based on the vertical length of the hole.

The thermoplastic resin film constituting the film layer is not particularly limited. For example, a polypropylene (PP) film, a polyethylene (PE) film, a general-purpose polystyrene (GP-PS) film, an impact-resistant polystyrene ( HI-PS) film, biaxially oriented polystyrene (OPS) film, polyester (PET) film, polycarbonate (PC) film, polyvinyl alcohol (PVA) film, polyvinyl chloride (PVC) film, ionomer film, cellulosic plastic film, It can be selected according to the purpose of use from a thermoplastic elastomer film or the like. Furthermore, in addition to the single film as described above, it may be a multilayer film bonded by dry lamination or sand lamination through a co-extruded film or an adhesive resin layer. The film layer is usually provided on both sides of the heat insulating base material layer, but for example, only the film 12a in FIG. 1 may be provided. Or as long as light-shielding property and a partial heat insulation effect are acquired, it is not necessary to provide a film layer. Further, the “film” in the present invention widely includes sheets and other film strips regardless of the thickness.

  In addition, when a window light-shielding / heat-insulating panel made of a heat-insulating base material having a through hole without a film layer is attached to a window glass, the heat-insulating base material with the through hole formed in the window glass. The intrusion of heat into the room is suppressed by tightly contacting and suppressing the flow of outside air and room air and preventing air convection. The present invention also includes a light-shielding / heat-insulating panel for windows made of a heat-insulating base material in which the through-holes are not provided without such a film layer (see claims 4 and 5, examples, and FIG. 5).

  The method for laminating the film layer on the heat insulating substrate layer is not particularly limited. For example, if the film layer and the heat insulating substrate layer are the same material or similar materials, the heated pressure roll and the backup roll are interposed. It can be welded by passing, and can be laminated by a topping or doubling method by a calendar method like PVC. Moreover, you may laminate | stack by interposing the adhesive agent with near SP value. The adhesive may be any of a solvent type, an emulsion type, and a hot melt type. Furthermore, what formed the film with the roll coater, the knife coater, etc. on the release paper may be transferred. In addition, in order to provide a film layer only on the surface of the heat-insulating base material layer excluding the through holes of the heat-insulating equipment layer, film layers are formed on both surfaces of the heat-insulating base material layer before the holes are formed in advance. What is necessary is just to drill a through-hole by the said drilling method in a layer structure. Furthermore, it is more efficient because a double-sided adhesive double-sided tape can be obtained if a through hole is formed after the double-sided adhesive tape with release paper is attached to one side of the multilayer structure (see FIGS. 1 and 3). ). Alternatively, the perforated film layer may be formed by coating a resin with a coater on both top surfaces of the heat insulating base material layer having holes.

  Next, the adhesive double-sided tape used in the embodiment of the present invention is made of a synthetic resin film having an adhesive layer on both sides, and is usually formed into a long roll shape in which release papers covering the adhesive layer surface are overlapped. Supplied. The material of the synthetic resin film is not particularly limited. For example, polyolefin resin such as polyethylene or polypropylene, ethylene / vinyl acetate copolymer, polyvinyl chloride, various elastomers, or copolymers or mixtures thereof may be used. The The release paper is preferably paper coated with a release agent such as silicone resin or polyolefin resin.

  In addition, the adhesive double-sided tape with release paper, one side of which is a micro sucker layer and the other side is an adhesive layer, has, for example, approximately 10,000 fine suction cups per square centimeter in the form of concave recessed holes having a diameter of about 1 μm to 300 μm. A micro-suction layer in which the particles are stably arranged is formed and can be easily applied and peeled, and can also be adsorbed to a certain uneven surface. Furthermore, printing on the sucker surface is possible, and it is resistant to heat and has adsorption up to 80 ° C. and heat resistance of 200 ° C.

  Next, examples will be described. A light-shielding / heat-insulating panel for windows was prepared based on the above embodiment. The heat-insulating base material layer is a 4mm thick spunbond nonwoven fabric (NGP sheet manufactured by Nippon Glass Fiber Industries Co., Ltd.) with the same diameter of glass fiber and PP fiber mixed and heat-bonded at the knots. A hole formed by punching by a punching method so that the aperture ratio was 50% was used. A transparent polyester film having a thickness of 0.05 mm is bonded to both surfaces of the heat insulating substrate through a transparent polyester adhesive to create a multilayer structure, and the multilayer structure is adjusted to the size of the window glass. Three-sided adhesive double-sided tape with release paper, one-sided adhesive double-sided tape, adhesive double-sided tape with one side of the micro-suction layer and the other side adhesive layer, and double-sided adhesive tape with holes A plurality of samples of the window shading / insulating panel affixed to each were prepared.

  Next, each said sample was affixed on the window glass, and the room temperature when not mounting | wearing with the light-shielding and heat insulation panel for windows was measured. As a result, when the outside air temperature is about 25 ° C, the room temperature when the window shading / insulating panel is not installed was about 25 ° C, which is almost the same as the outside temperature. The room temperature was about 20 to 19 ° C., and a heat insulation effect of about 5 to 6 ° C. was observed. Also, regarding the ease of sticking the panel by the type of adhesive double-sided tape, compared to general-purpose adhesive double-sided tape, the double-sided adhesive double-sided tape is easy to handle because it does not entrain air and is difficult to wrinkle, and one side is an adhesive with a micro sucker layer. In the case of the double-sided tape, it was confirmed that the adsorptivity does not decrease even when the attachment and detachment are repeated a plurality of times. Furthermore, with regard to the transparency, it was confirmed that the outside scenery can be viewed from the window equipped with the light shielding / insulating panel for windows (see FIG. 4).

Next, a PS foam board made of polystyrene having a thickness of φ4 × 7 mm and having a through hole of φ4 × 7 mm is used as the heat-insulating base material in the above embodiment, except that the film is not bonded to the heat-insulating base material. A light-shielding and heat-insulating panel for windows similar to that in the above example was prepared (Example 1). Moreover, in the light shielding / heat insulating panel for windows of Example 1, a light shielding / heat insulating panel for windows was prepared by sticking a transparent polyester film having a thickness of 0.05 mm on both sides of a heat insulating substrate with a transparent polyester adhesive. (Example 2). A plurality of samples were prepared by cutting the light-shielding and heat-insulating panels for windows of Example 1 and Example 2 into appropriate sizes. FIG. 6 shows the results of measuring the room temperature with and without the window shading / insulating panel attached (comparative example) with each of the above samples attached to a window glass. As shown in FIG. 6, the window shading / insulating panel (Example 1) in which the film is not bonded to the heat insulating substrate is compared with the comparative example in which the window shading / insulating panel is not mounted. -It turns out that it is excellent in the heat insulation effect similarly to a heat insulation panel (Example 2). At 17:00 in FIG. 6, Example 1 has a temperature difference of 9 ° C. and Example 2 has a temperature difference of 11.5 ° C. compared to the comparative example. FIG. 7 shows the power consumption measured when the indoor air conditioner is operated and the room temperature is set to 26 ° C. From these results, it was found that Example 1 had a power saving effect of 17% compared to the comparative example, and Example 2 had a power consumption effect of 23%. Moreover, the heat insulation effect which prevents the convection of air and suppresses the penetration | invasion of the heat | fever indoors by sticking the light-shielding and heat insulation panel for windows of Example 1 which does not bond a film to a heat insulation base material from this experiment to a window glass. (See FIGS. 6 and 7). Furthermore, it was confirmed that the light shielding / insulating panel for windows of Example 1 was excellent in light shielding properties and transparency as with the window shading / insulating panels of Example 2.

  The light-shielding and heat-insulating panel for windows according to the present invention appropriately sets the hole diameter and depth of the through-hole drilled in the heat-insulating base material layer as described above, and film layers on both surfaces or one surface of the heat-insulating base material layer. It consists of a heat-insulating base material layer that does not have a multi-layer structure or a film layer provided, and is attached to the inside of a window glass of a building with adhesive tape etc., and is extremely economical as an energy-saving measure to reduce the heating and cooling load Useful.

1: light-shielding / heat-insulating panel for windows, 11: heat-insulating base material layer, 12a, 12b: film layer, 13: through hole, 14: adhesive double-sided tape, 15: release paper,
S: Sun, G: Window glass

Claims (7)

In the light-shielding / heat-insulating panel attached to the inside of the window composed of a multilayer structure in which a film layer is provided on one side or both sides of a heat-insulating base material layer having a large number of through holes,
The heat insulating substrate layer is composed of at least one of nonwoven fabric, felt, three-dimensional woven fabric or thermoplastic resin foam, and the thickness of the heat insulating substrate layer is 2 mm or more,
The hole diameter of the through hole is 2 to 7 mm, the opening ratio is 45% or more, and the ratio of hole diameter: hole depth is set in the range of 2: 1 to 1: 1. Shading / insulating panels for windows. In the light-shielding / heat-insulating panel attached to the inside of the window composed of a multilayer structure in which a film layer is provided on one side or both sides of a heat-insulating base material layer having a large number of through holes,
The heat insulating substrate layer is composed of at least one of nonwoven fabric, felt, three-dimensional woven fabric or thermoplastic resin foam, and the thickness of the heat insulating substrate layer is 2 mm or more,
The hole diameter of the through hole is 2 to 7 mm, the opening ratio is 45% or more, and
The diameter D of the through hole, the depth L of the through hole, and the solar altitude α at the equinox / autumn estimated at the place of use are as follows: D / L ≦ tan α
A light-shielding and heat-insulating panel for windows.   The multi-layer structure is characterized by comprising either one of a film layer provided on the entire surface of the heat-insulating base material layer or a film layer provided only on the heat-insulating base material layer surface excluding through holes. The light-shielding and heat-insulating panel for windows according to claim 1 or 2. In the light-shielding and heat-insulating panel attached to the inside of the window consisting of a heat-insulating base material layer with many through holes,
The heat insulating substrate layer is composed of at least one of nonwoven fabric, felt, three-dimensional woven fabric or thermoplastic resin foam, and the thickness of the heat insulating substrate layer is 2 mm or more,
The hole diameter of the through hole is 2 to 7 mm, the opening ratio is 45% or more, and the ratio of hole diameter: hole depth is set in the range of 2: 1 to 1: 1. Shading / insulating panels for windows. In the light-shielding and heat-insulating panel attached to the inside of the window consisting of a heat-insulating base material layer with many through holes,
The heat insulating substrate layer is composed of at least one of nonwoven fabric, felt, three-dimensional woven fabric or thermoplastic resin foam, and the thickness of the heat insulating substrate layer is 2 mm or more,
The hole diameter of the through hole is 2 to 7 mm, the opening ratio is 45% or more, and
The diameter D of the through hole, the depth L of the through hole, and the solar altitude α at the equinox / autumn estimated at the place of use are as follows: D / L ≦ tan α
A light-shielding and heat-insulating panel for windows.   The heat-insulating base material layer is a spunbonded nonwoven fabric in which glass fibers and polypropylene fibers are mixed in equal amounts and the knots are heat-sealed, or a synthetic resin film, synthetic paper or other paper on both sides of foamed polystyrene. The light-shielding / heat-insulating panel for windows according to claim 1, 2, 3, 4, or 5, characterized in that the window-shielding / heat-insulating panel comprises any one of sandwich structures provided with any one of the film strips.   A micro sucker layer in which about 10,000 fine suction cups each having a concave depression hole having a diameter of 1 μm to 300 μm are arranged on one side of the window shading / insulation panel in a plane, and the other side is formed from an adhesive layer. The light shielding for windows according to claim 1, wherein the adhesive double-sided tape with release paper is attached in advance so that the surface of the adhesive layer faces the multilayer structure.・ Insulation panels.

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