Building composite insulation with multiple reflective layers

Abstract

The present invention relates to a composite insulation material for construction equipped with a plurality of reflective layers. More specifically, the invention relates to a composite insulation material for construction equipped with a plurality of reflective layers that enhances thermal insulation efficiency by providing reflective layers made of aluminum foil that reflect heat not only in the outermost layer but also in the intermediate layers, and reduces the emissivity of the reflective layers by providing insulating space layers between the reflective layers to secure reflective spaces, thereby maximizing thermal insulation efficiency. Additionally, by providing a non-woven fabric layer and an air layer as insulating space layers, the invention enables not only thermal insulation but also sound absorption, shock absorption, and prevention of condensation even with a thin thickness. A composite thermal insulation material for construction having a plurality of reflective layers according to the present invention comprises a plurality of reflective layers made of aluminum foil to reflect heat, and an insulating space layer positioned between adjacent reflective layers to provide insulation and simultaneously secure a reflective space between the reflective layers, wherein the reflective layers are provided with at least three or more layers, and the insulating space layer is provided with a polyester-based nonwoven fabric layer and an air layer made of a porous synthetic resin.

Description

Technology Field

[0001] The present invention relates to a composite insulation material for construction equipped with a plurality of reflective layers, and more specifically, to a composite insulation material for construction equipped with a plurality of reflective layers that can increase insulation efficiency by providing a reflective layer made of aluminum foil that reflects heat not only in the outermost layer but also in the intermediate layer, and can lower the emissivity of the reflective layer by providing an insulating space layer between the reflective layers to secure a reflective space, thereby maximizing insulation efficiency, and at the same time, can prevent insulation, sound absorption, shock absorption, and condensation even with a thin thickness by providing a non-woven fabric layer and an air layer as the insulating space layer. Background Technology

[0002] Generally, more than 40% of energy heat loss in buildings occurs through exterior walls. This is because air flows in and out of the building through the fine pores of concrete or bricks. In buildings with insufficient insulation, outdoor heat easily enters the interior while it is being cooled in the summer, and indoor heat easily escapes to the outside during heating in the winter, resulting in reduced efficiency for both cooling and heating. In other words, this implies that significant energy consumption is required to maintain a comfortable indoor thermal environment. Furthermore, in buildings with insufficient insulation, when heating is being done indoors during the cold winter, the walls are exposed to the cold outside, causing the interior wall surface temperature to drop and making it prone to condensation. To improve building insulation, the thermal transmittance must be reduced; to achieve this, methods such as increasing material thickness or selecting materials with low thermal conductivity can be considered. However, since increasing the thickness of materials leads to issues such as construction costs and difficulties in installation, the method of selecting materials with low thermal conductivity—specifically, inserting insulation into the building walls—is generally used. Insulation is utilized to address these structural problems and conserve energy. Generally, insulation refers to a single material or a combination of multiple materials capable of significantly reducing heat flow through conduction, convection, and radiation, and its applications are extensive. By significantly reducing heat flow, insulation saves energy by minimizing heat loss or gain; it also prevents surface condensation caused by a drop in surface temperature; and it reduces indoor temperature fluctuations when heating or cooling is unnecessary or impossible. Furthermore, insulation must be able to prevent air infiltration and moisture permeability.In addition to the basic property of thermal performance, the selection criteria for such insulation materials must consider various performance characteristics such as rigidity, sound insulation, air infiltration prevention, flame retardancy, heat resistance, cost-effectiveness, degree of harm to the human body, and safety. In Korea, resistive insulation materials, which are porous or fibrous and composed of countless air bubbles, are widely used. These resistive insulation materials provide insulation by lowering thermal conductivity through the stagnation of air. Expanded polystyrene is a representative example of such resistive insulation. While expanded polystyrene has the advantages of being easy to install and lightweight due to air making up more than 98% of its volume, it has disadvantages such as a lower heat resistance temperature compared to other insulation materials, problems related to transportation due to its plate-like structure, the generation of harmful gases such as carbon monoxide (CO), methane, and ethylene in the event of a fire, and a weakness in chemical reactions, making it easily soluble in commonly used aromatic hydrocarbon-based organic solvents. Meanwhile, inorganic insulation materials such as glass wool or rock wool are resistant to heat and offer excellent workability at joints; however, they have disadvantages such as high hygroscopicity, poor mechanical properties in the molded state making installation on walls difficult, heavy weight, and the potential to cause respiratory diseases due to dust during handling. Although reflective insulation materials have been proposed as replacements for resistive insulation materials with the aforementioned problems, reflective insulation materials according to conventional technology, while having the advantage of easy installation, suffer from the disadvantage of lower thermal reflectivity because the reflective layer, made of materials such as aluminum foil, consists of only a single layer or is placed only on the outermost layer, and their insulation performance is inferior to existing insulation materials because they utilize a simple foamed paper laminated onto the reflective layer. For reference, reflective insulation refers to a material that has a low emissivity for thermal radiation; it acts as an insulating material by reflecting radiant heat energy, while simultaneously preventing heat loss by retaining heat between walls and tiles or between walls and interior panels. The problem to be solved

[0003] The present invention has been devised to solve the problems of the prior art as described above. The objective of the present invention is to provide a reflective insulation material that replaces conventional resistive insulation materials, wherein the insulation efficiency is increased by providing a reflective layer made of aluminum foil that reflects heat not only in the outermost layer but also in the intermediate layer, and the emissivity of the reflective layer can be lowered by providing an insulation space layer between the reflective layers to secure a reflective space, thereby maximizing insulation efficiency. Furthermore, by providing a non-woven fabric layer and an air layer as the insulation space layer, the invention provides a composite insulation material for construction equipped with multiple reflective layers capable of not only insulation but also sound absorption, shock absorption, and prevention of condensation. means of solving the problem

[0004] To achieve the above objectives, a composite thermal insulation material for construction having a plurality of reflective layers according to the present invention comprises a plurality of reflective layers made of aluminum foil to reflect heat, and an insulating space layer located between adjacent reflective layers to ensure a reflective space between the reflective layers while simultaneously providing thermal insulation, wherein the reflective layers are provided with at least three or more layers, and the insulating space layer is characterized by having a polyester-based nonwoven fabric layer and an air layer made of a porous synthetic resin. Effects of the invention

[0005] With the above-described configuration, the composite insulation material for buildings equipped with a plurality of reflective layers according to the present invention blocks the movement of heat between the inner and outer surfaces of a building through a continuous reduction effect by providing a plurality of reflective layers, and has the effect of preventing condensation by using aluminum foil, which has excellent heat reflection capability and low moisture permeability, as the reflective layer. Furthermore, the composite insulation material for buildings equipped with a plurality of reflective layers according to the present invention has the effect of maximizing insulation efficiency by lowering the emissivity of the reflective layers by providing an insulation space layer that secures a reflective space between adjacent reflective layers, and by providing a non-woven fabric layer and an air layer with excellent insulation performance and sound absorption effect as the insulation space layer, it has the effect of preventing insulation, sound absorption, shock absorption, and condensation even with a thin thickness. In addition, the composite insulation material for construction equipped with a plurality of reflective layers according to the present invention can reduce thermal stress of concrete due to fluctuations in ambient temperature, thereby helping to maintain the performance of concrete. Furthermore, since a plurality of reflective layers and insulating space layers are stacked in multiple layers and thermal insulation is achieved inside, it has the effect of preventing not only surface condensation but also internal condensation. Brief explanation of the drawing

[0006] FIG. 1 is a cross-sectional view of a composite insulation material for construction according to an embodiment of the present invention. FIG. 2 is a diagram showing the usage state of a composite insulation material for construction according to an embodiment of the present invention. Specific details for implementing the invention

[0007] Hereinafter, a composite insulation material for construction equipped with a plurality of reflective layers according to the present invention will be examined in more detail with reference to an embodiment illustrated in the drawings. Fig. 1 is a cross-sectional view of a composite insulation material for construction according to an embodiment of the present invention, and Fig. 2 is a diagram showing the usage state of a composite insulation material for construction according to an embodiment of the present invention. Looking at the drawings, the composite insulation material for construction (1) equipped with a plurality of reflective layers according to an embodiment of the present invention is composed of a plurality of reflective layers (10) and an insulation space layer (20) located between adjacent reflective layers (10). The reflective layers (10) serve to prevent condensation caused by moisture and to block cracks and deformation of the building by reflecting radiant heat to provide insulation. They are made of aluminum foil with excellent heat reflection ability and air and moisture blocking ability, and at least three or more are provided. In one embodiment of the present invention, the reflective layer (10) is provided with three reflective layers (10): a first reflective layer (11), a second reflective layer (12), and a third reflective layer (13). Here, the first reflective layer (11) and the third reflective layer (13) are located on the outermost layer, and the second reflective layer (12) is located on the middle layer. The aluminum foil used as the reflective layer (10) is formed in a thin sheet form and must not be crumpled when wound into a roll. Meanwhile, even if the aluminum foil is formed in a thin sheet form, there is no problem at all in blocking the communication of air and moisture due to the properties of aluminum. The insulation space layer (20) serves to provide insulation and simultaneously secure a reflection space between the reflective layers (10), and is located between adjacent reflective layers (10), and is provided with a non-woven fabric layer (21) and an air layer (22). The above nonwoven fabric layer (21) is of the polyester type and is located between the first reflective layer (11) and the second reflective layer (12).That is, the above nonwoven fabric layer (21) is made of a polyester type fiber without undergoing a weaving process, by arranging fibers in parallel or irregular directions and combining them with a synthetic resin adhesive to form a felt shape, which has excellent thermal stability, high mechanical properties, wear resistance, adhesive strength, etc., and possesses excellent heat blocking ability. Meanwhile, the above nonwoven fabric layer (21) itself has thermal insulation, heat retention, shock absorption, and soundproofing effects, and when attached to a wall surface of a composite insulation material for construction according to one embodiment of the present invention, it gets tangled with a staple pin and hooked onto a nail, allowing it to be firmly fixed to the wall surface. In addition, the nonwoven fabric layer (21) ensures a reflection space between the first reflection layer (11) and the second reflection layer (12), thereby lowering the emissivity of the first reflection layer (11) and the second reflection layer (12) and maximizing the thermal insulation efficiency of the first reflection layer (11) and the second reflection layer (12). The air layer (22) is made of a porous synthetic resin composed of countless bubbles and is located between the second reflection layer (12) and the third reflection layer (13). That is, the air layer (22) has the effect of blocking heat or cold by placing insulated air with very low thermal conductivity between the second reflective layer (12) and the third reflective layer (13), and also serves to prevent condensation caused by a sudden temperature difference. At the same time, just like the non-woven fabric layer (21), it ensures a reflective space between the second reflective layer (12) and the third reflective layer (13), thereby lowering the emissivity of the second reflective layer (12) and the third reflective layer (13) and allowing the thermal insulation efficiency of the second reflective layer (12) and the third reflective layer (13) to be maximized.FIG. 2 illustrates the usage state. According to one embodiment of the present invention, a composite insulation material (1) for construction is installed such that a first reflective layer (11), a non-woven fabric layer (21), a second reflective layer (12), an air layer (22), and a third reflective layer (13) are sequentially stacked from the outer wall (2) of a building, and a predetermined space (4) is formed between the composite insulation material (1) for construction and the finishing material (3) of the outer wall. Accordingly, the first reflective layer (11) primarily blocks heat from inside the building from being released to the outside through the outer wall (2), and the third reflective layer (13) primarily blocks air and moisture entering through the finishing material (3) of the outer wall. The movement of heat, air, or moisture that is not blocked by the first reflective layer (11) or the third reflective layer (13) is continuously blocked by the insulation space layer (20) and the second reflective layer (12), thereby enabling the complete blockage of the movement of heat, air, or moisture on the inner and outer surfaces of the building through a continuous reduction effect. In particular, the third reflective layer (13) also has the effect of insulating the temperature of the space (4) between the building composite insulation material (1) and the finishing material (3) by reflecting incoming heat and air. Furthermore, by sequentially stacking the first reflective layer (11), the non-woven fabric layer (21), the second reflective layer (12), the air layer (22), and the third reflective layer (13), insulation is achieved inside the building composite insulation material (1), thereby preventing not only surface condensation but also internal condensation. The composite insulation for construction equipped with a plurality of reflective layers described above and illustrated in the drawings is merely one embodiment for carrying out the present invention and should not be interpreted as limiting the technical scope of the present invention. The scope of protection of the present invention is determined solely by the matters described in the following claims, and embodiments that have been improved and modified without departing from the gist of the present invention shall be deemed to fall within the scope of protection of the present invention insofar as they are obvious to those skilled in the art to which the present invention belongs. Explanation of the symbols

[0008] 1 Composite insulation for construction 10 Reflective layer 11 First reflective layer 12 Second reflective layer 13 Third reflective layer 20 Insulating space layer 21 Non-woven fabric layer 22 Air layer

Claims

Claim 1 A composite insulation material for construction having a plurality of reflective layers, comprising a plurality of reflective layers made of aluminum foil to reflect heat, and an insulating space layer located between adjacent reflective layers to provide insulation and simultaneously secure a reflective space between the reflective layers, wherein the reflective layers are provided with at least three or more layers, and the insulating space layer is provided with a polyester-based nonwoven fabric layer and an air layer made of a porous synthetic resin.

Images