KR200409422Y1 - The incombustible reflective heat inssulator with advanced performance - Google Patents

Abstract

When bonding both sides of the inorganic fiber-based heat insulating material (1) such as glass fiber, silica fiber, glass wool, rock wool, etc. to the reflective layer 3 such as aluminum foil having excellent heat reflection efficiency, various aluminum deposition films, aluminum composites, etc. A heat reflection insulating material having excellent heat insulating property manufactured by hot pressing method using a hot melt adhesive (2) of 30 g / m2 or less, and based on an inorganic fiber insulating material, heat insulating property at low temperature with a relatively low ratio of radiant heat at low temperature. It is superior to conventional reflective insulation materials, and the total amount of organic matter in the entire insulation material is less than 100g / m2 per weight, so that the flame propagation speed and residual flame retention time are low, and the discharge of flammable materials by pyrolysis at high temperature It is possible to satisfy the practical active non-combustibility because there is little generation of toxic gas that is dangerous to the human body. In the lamination process of the inorganic fiber-based heat insulating material (1) and the reflective layer (3) using the (2) by laminating by using a pressure roll with a concave-convex surface on the surface of the heat reflection insulating material is formed concave-convex The present invention relates to a heat reflection non-flammable insulation having higher heat reflection efficiency and improved heat insulation.

Insulation Inorganic Fiber Reflective Layer Aluminum Low Temperature Insulation Nonflammable Surface

Description

Incombustible reflective heat inssulator with advanced performance}

1 is a cross-sectional view of the heat insulating material according to the present invention

Fig. 2- Fig. 9: Example of surface irregularities in the present invention

<Description of the symbols for the main parts of the drawings>

1: inorganic fiber insulation

2: adhesive layer

3: reflective layer

5: Recessed portion (deep portion) of the surface irregularities on the upper portion of the reflective layer

6: part which protrudes among the surface irregularities of the upper part of a reflective layer (white part)

Conventional heat insulating material is a heat insulating material that targets only thermal conductivity due to heat conduction, and typical heat insulating materials include foam insulating material of various organic materials such as polystyrene foam, polyethylene foam, polypropylene foam, polyurethane foam, rubber foam, and polyethylene terephthalate or polypropylene fiber. Organic fiber based nonwoven fabric or felt type insulation material and inorganic fiber based nonwoven fabric or felt type insulation material such as glass wool, rock wool and glass filament were the most common thermal insulation materials. Such a conventional heat insulating material has been divided into the term heat insulating material because of the low thermal conductivity and the thickness exhibits excellent heat insulating properties.

Patent Publication No. 2001-0091178 proposes a multi-layered insulating material in which a reflective layer treated with aluminum is repeatedly formed on a surface of a conventional foam insulation material such as polyethylene foam or polystyrene foam having a predetermined thickness. There is a problem of decrease of incombustibility and construction by the content of.

In addition, Utility Model Registration No. 0021592 proposes a heat insulating material in which a nonwoven fabric, a synthetic resin film, an aluminum deposition layer, and a synthetic resin film are repeatedly arranged.

In the Patent Publication No. 2005-10-0090628 proposes a non-insulating insulation board for building a non-woven fabric and an aluminum foil layer in the upper portion of the non-insulating insulation layer composed of carbon fibers and silica fibers, and the aluminum pearl layer and the chemical fiber insulation layer in the lower portion However, only carbon fiber and silica fiber, which are a part of the heat insulating material, are nonflammable and most of the other components are not nonflammable, so it is difficult to expect excellent nonflammability.

And in Patent Publication No. 2005-10-0056625 proposes an eco-friendly insulation for construction in which the upper part of the PE or PP woven fabric is coated, and the lower part is bonded to the aluminum foil with a hot melt adhesive, but due to the excessive content of organic matter to expect incombustibility It has a difficult disadvantage, and also has a disadvantage that the thermal insulation is not excellent.

In addition, Patent No. 2001-20-0256906 proposes a structure in which a glass fiber layer and a heat reflection insulation layer having an air pocket on the stone surface are bonded with an epoxy adhesive, but in the present invention, the glass fiber is used for the purpose of reinforcing the stone. It is used, the heat reflective insulation layer with an air bag is a component composed mostly of polyolefin has a problem of poor incombustibility.

The heat insulating material of the present invention minimizes the conduction heat and at the same time minimizes the heat radiated at the same time to exhibit a higher heat insulation, and to propose a heat insulating material that can be reliably solved even the non-combustible problem that conventional heat insulating materials do not have.

The non-combustible heat reflection insulating material excellent in heat insulation proposed by the present invention is a material having an aluminum reflective layer (3) having excellent heat reflection efficiency on both sides of the inorganic fiber-based heat insulating material (1) which is determined to have the best heat insulation and non-combustibility among the conventional volume insulating materials. It characterized by consisting of an adhesive layer (2) capable of adhering to the volume insulating material (1).

Inorganic fiber-based heat insulating material used in the present invention is mainly glass fiber on the long fiber may be subdivided into types such as A, C, E, S, AR, depending on the component or use, but any type can be used in the present invention. Preferably, E-glass fiber is the best. This E-glass fiber is usually made into a very long fiber form by spinning. The long fiber is cut to about 50-100mm to form a very bulky slab by carding or air forming. Punching process using a punching needle with a protruding ear can be manufactured into a product having a suitable density and thickness, the density is suitable for the present invention is 50-200kg / m3 and the thickness is 2-50mm, depending on the use and required performance You can adjust as much as you like.

On both sides of the inorganic fiber-based heat insulating material 1, an aluminum layer 3 having excellent reflection efficiency is located. The reflective layer is an aluminum layer having a thickness of 5-300 μm mainly consisting of aluminum, a thin aluminum film, an organic film, or a nonwoven fabric. Composite layer, evaporation reflecting film with aluminum deposited on organic film such as polyethylene terephthalate, polypropylene, polyethylene, etc., lamination cloth bonded with aluminum and glass fiber fabric with adhesive, and aluminum lamination cloth reinforced with fiberglass with network structure Can be used.

In addition, a conventional adhesive may be used for bonding the reflective layer 3 and the inorganic fiber-based heat insulating material 1, but the selection of adhesives and bonding processes, such as conventional adhesives containing solvents and solvent-free hot melt adhesives, is greatly limited. However, in order to bond the glass fiber and the aluminum layer, it is necessary to select a component having good wettability for both components. The hot melt having a low melting point and a low melt index (MI) among polyethylene, polypropylene, and YV is excellent in adhesive strength. . In the bonding process between the reflective layer 3 and the inorganic fiber insulating material 1, in the case of wet adhesion with a solvent, an adhesive solution is applied on the inorganic fiber insulating material 1 and preliminarily dried as necessary to raise the reflective layer 3. After pressing and heating conditions, the adhesive may be adhered to each other, and a hot melt adhesive 2 may be inserted between the reflective layer 3 and the inorganic fiber-based heat insulating material 1 and heated to a melting point of the hot melt adhesive 2 and pressurized. It can also adhere by a heating roller method. However, in the case of the heating roller method, the temperature at which the hot melt adhesive 2 can be melted should be less than the temperature-time-pressure condition for melting the constituent material of the present invention.

In addition, by forming a pattern of various patterns on the surface of the heating and pressing roll used in the lamination process, irregularities can be formed on the surface of the final heat insulating material. In order to maximize the insulation, it is recommended that the reflective layer be in contact with the air layer as much as possible. If there is surface irregularities, it is a means to secure a little more air layer than without such surface irregularities. Even in the case of construction, it is possible to obtain the advantage that the air layer as much as the unevenness is secured. As for the irregularities of the surface of the heat insulating material in the present invention, there is no great limitation as to the shape thereof as illustrated in FIGS. 2 to 9, and the reflective layer 3 is directly connected to the inorganic fiber-based heat insulating material 1 according to the shape or size of the pattern. Since the ratio of the recessed portion 5 to be bonded to each other is sufficient enough that the reflective layer 3 is attached to the surface of the inorganic fiber-based heat insulating material 1, it can be used as a heat insulating material if 10% or more of the total area of the reflective layer 3 is sufficient. Do. And the difference between the highest point and the lowest point of the unevenness is the thickness of the air layer that can be naturally secured. If the height is 0.5 mm or more, the difference in insulation starts, and 0.8 mm or more is sufficient.

Since the heat insulating material according to the present invention not only prevents heat conduction but also prevents most of heat transfer by radiation, the heat insulating material exhibits a heat insulating effect corresponding to a conventional volume insulating material 200-300 mm even at a thickness of about 10 mm, especially at low temperatures with a low ratio of radiant heat. Insulation is well suited to the domestic insulation market situation where the fiber-shaped inorganic insulation material compensates for the energy efficiency of the winter rather than the summer, and has excellent performance in the winter insulation performance compared to the reflective insulation material of the thin-film multilayer structure.

And the most important nonflammability in the present invention is not the concept of flame retardancy, such as the delay of the combustion rate or the control of flame propagation speed, which was expressed as flame retardancy in the past, but it is a practical nonflammability that is required in recent years, and this nonflammability does not catch fire even when it comes in contact with flame. In addition, it is required not to discharge flammable substances or generate toxic gases harmful to human body even at high temperature. In order to satisfy such substantial active incombustibility, organic matter decomposable at high temperature among the components of the insulation is required. The content of is less than 100g per 1m2, preferably 50g or less. To this end, since the organic compound used in the present invention is only an adhesive layer for bonding each layer, since the adhesive layer uses a hot melt adhesive having a weight of 10-30 g / m 2, the adhesive layer is required even if the adhesive layer is used ten times. There is a characteristic that can satisfy the non-combustible characteristics.

In addition, by forming various patterns on the surface of the heating press roll used in the lamination process, irregularities can be formed on the surface of the final insulation material. In general, the building process is used in combination with several adjacent materials. In this case, in order to maximize the effect of the reflective insulation, the reflective layer should be in contact with the air layer if possible, so that the reflection efficiency is high. Had to worry about reflecting the design. However, as in the present invention, by introducing surface irregularities that can secure an air layer of at least 0.8 mm to the surface of the product, even in the construction method in contact with the adjacent material can obtain a slight heat insulation improvement effect compared to the product without surface irregularities You have an advantage.

Claims (1)

The heat-reflective layer (3) on both sides of the inorganic fiber-based heat insulating material (1) was bonded to the hot melt adhesive (2) having a weight of 30 g / m 2 or less per area, the content of organic matter used in the entire heat insulating material is less than 100g / m 2, the surface of the heat insulating material A heat reflection insulating material having excellent heat insulation at low temperatures and improved non-combustibility, characterized in that the phosphorus reflective layer 3 has a height difference of 0.5 mm or more and an unevenness having a depression ratio of 10% or more of the total area of the reflective layer.

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