KR200409424Y1 - The breathable and incombustible reflective heat insulator 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 practical active non-combustibility because there is little generation of toxic gas which is dangerous to human body. In order to solve the problem of condensation, which has its disadvantages, the present invention relates to a breathable heat reflection insulating material having excellent heat insulating property and non-combustible surface property having moisture resistance and moisture permeability.

Insulation Inorganic Fiber Reflective Layer Aluminum Low Temperature Insulation Nonflammable Breathable

Description

Breathable Heat Reflective Insulator (1) {The breathable and incombustible reflective heat insulator with advanced performance}

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

2 is a conceptual diagram of the surface fine perforation of the structure side of the insulating material according to the present invention

3 is a conceptual diagram of the air perforation of the heat insulating material according to the present invention

4: Example of the insulation material construction of the present invention

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

0: heat insulating material of the present invention

1: inorganic fiber insulation

2: adhesive layer

3: reflective layer

31: reflective layer on the side of the structure

32: reflective layer on the atmosphere side

5: hole present in the surface reflection layer

51: microholes present in the reflective layer 31 on the side of the structure

52: hole present in the reflective layer 32 on the atmosphere side

91: the structure of the building (rafters)

92: roof panel

94: air layer

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 heat radiated while at the same time minimizing conduction heat, which is a characteristic of the conventional heat insulating material, thereby exerting higher heat insulating properties, and reliably solving the problem of incombustibility that a conventional heat insulating material does not have.

And as the insulation is constructed, air is not freely communicated because the structure and insulation are blocked, so if condensation occurs, the humidity of the sealed space increases, which prevents problems such as corrosion and rot. Moisture allows for permeation through the insulation by placing fine pores.

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 of the present invention can be used. In particular, 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. . 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, the ventilated micropores 5 are formed on the surfaces of the reflective layers located on both sides of the present invention. Among the heat reflective layers 3 present on both sides of the heat insulating material of the present invention, the heat reflecting surfaces 31 located on the structure side are mainly used for condensation. To prevent water droplets from penetrating into the heat insulating material, there must be a certain waterproof function and moisture permeable function. For this purpose, the reflective layer 31 existing on the surface of the structure is laminated on the inorganic fiber-based heat insulating material 1, and then fine needles are used. To drill. When the micropore size of the reflective layer 31 is 100 μm or less, it exhibits a waterproofing property against water droplets. As the size of the micropore is smaller, the stability to waterproofing increases, but the resistance to moisture permeation increases, thereby preventing condensation in the sealed space. For the characteristics of sufficient micropores, 20 or more per cm2 is sufficient if the size of the hole is around 100μ, and 50 or more holes per cm2 are required if the size of the micropore is 50μ or less. Since the size of the micropores is determined by the diameter of the needle used for drilling, selection of the needle is very important.

In addition, since the reflective layer 32 directly contacting the atmosphere, not the structure side, is intended to increase air permeability because there is little contact with water, there is no particular limitation on the size or number of holes. It is good to form so that, the number of holes is more than 1 / cm 2 is sufficient, but the appearance of the product is preferably formed in a density of about 5-20 / cm 2.

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, as the insulating material of the present invention that can be ventilated, the humidity of the sealed space between the structure and the insulating material is increased to prevent problems such as corrosion and decay, which can greatly help the stability of the structure and the environmental improvement of the structure. .

Claims (1)

The heat reflection layer 3 is bonded to both sides of the inorganic fiber insulation 1 using a hot melt adhesive 2 having a weight of 30 g / m 2 or less per area, and the content of organic material used for the entire insulation is 100 g / m 2 or less. On the surface of the heat reflection layer 31 which is in contact with the surface, 20 or more micropores 51 having a diameter of 100 μm or less are formed in the hole, and the reflective layer 32 which is in contact with the atmosphere is provided with one hole 52 having a diameter of 0.5 mm or more. Breathable heat reflection insulating material excellent in heat insulating and non-combustible, characterized in that the formation of / cm2 or more.

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