JP2006241920A - Thermal insulation method of building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve thermal insulation performance, flame retardant performance and sound absorbing performance of a building by forming a thermal insulation material under a floor or behind a ceiling of the building by a special means using an industrial waste material, by which pollution is prevented. <P>SOLUTION: The insulation material 6 having a height of 200 to 300 mm is formed under the floor or in a space 4 behind the ceiling 3 by blowing a crushed material 5, being a flame retardant polyurethane waste material crushed into the size of 10 to 30 mm, under the floor or behind the ceiling 3 of the building 1 by a blowing machine, so that thermal insulation performance, flame retardant performance and sound absorbing performance of the building 1 may be improved. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a heat insulation method for various buildings such as a wooden structure for home use and a reinforced concrete structure, and more specifically, an industrial waste material is formed under a floor or a ceiling of a building, and a heat insulating material is formed by a special means. Further, the present invention relates to a heat insulation method for a building that improves the heat insulation performance, flame retardance performance, or sound absorption performance of the building, and helps prevent pollution.

  Conventionally, plate-shaped flame-retardant foamed urethane materials, or plate-shaped rock wool materials and glass wool materials are used as heat insulation methods for various buildings such as wooden buildings for homes and reinforced concrete buildings. A method of cutting into a wall and sticking it to a wall surface of a building or a gap under the floor or ceiling is employed.

  However, in this heat insulation construction method, a large number of cut plate heat insulating materials are bonded together while being joined to the wall surface or gap, so that joints are formed at the joints, and condensation or heat insulation loss occurs from the joints.

In addition, with this conventional method, it is difficult to bond the small plate heat insulating materials when there are obstacles such as suspended trees and wiring between the floors and the gaps in the ceiling.
JP-A-60-16639 JP 63-163304 A

  Therefore, an object of the present invention is to use industrial waste materials under the floor or the ceiling of various buildings such as wooden buildings for homes and reinforced concrete buildings, and to easily and reliably form heat insulating materials by special means. An object of the present invention is to provide a heat insulation method for a building that improves the heat insulation performance, flame retardance performance, or sound absorption performance of the building, helps to prevent pollution, and improves the above-mentioned drawbacks of the known technology.

  In order to solve the above-described problems, according to the present invention, a heat insulating material is formed between the floor or the ceiling by blowing a pulverized product of the flame-retardant polyurethane under the floor or the ceiling of the building. The heat insulation performance, flame retardance performance, and sound absorption performance are improved.

  In the above-described present invention, a heat insulating material is formed under the floor or under the ceiling by blowing a pulverized product of the flame-retardant polyurethane under the floor or under the ceiling of the building. Improves fuel performance or sound absorption performance. Furthermore, since the present invention uses industrial waste as a heat insulating material, it is useful for preventing pollution. Further, since the heat insulating material is formed by blowing the pulverized material, the heat insulating material forming process is easy, and the heat insulating material is reliably formed even if there is an obstacle under the floor or the gap in the ceiling.

  Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a cross-sectional view of a state where a heat insulating material is formed by blowing crushed material into the ceiling of a wooden house for home use. 2 is a cross-sectional view taken along line AA in FIG.

  In the present invention, as shown in FIGS. 1 and 2, the pulverized material 5 is blown into the gaps 4 in the ceiling 3 formed on the top plate 2 of the building 1 to form the heat insulating material 6.

  The pulverized product 5 is formed by pulverizing architectural foam polyurethane blowing waste to a size of 10 to 30 mm with a rotary crusher.

  The pulverized material 5 according to the present invention thus obtained is blown into the gap 4 in the ceiling 3 on the top plate 2 of FIG. 1 using a blowing machine to form a heat insulating material 6. The heat insulating material 6 is preferably blown to a height of 200 to 300 mm.

  The pulverized product 5 is preferable because the grain size is improved by mixing 30% by weight of 10 mm, 40% by weight of 20 mm, and 30% by weight of 30 mm. The pulverized product 5 can also be deodorized by containing 1 to 10% by weight of carbon powder or activated carbon powder.

  In the present invention as described above, since the heat insulating material 6 is formed by blowing the pulverized product of the flame retardant polyurethane waste material with a blowing machine under the floor or the gap between the ceilings, the heat insulating material 6 has no seams, and therefore dew condensation occurs. And there is little heat insulation loss. In addition, the present invention forms the heat insulating material easily and reliably by blowing even when an obstacle such as a suspended tree or wiring is under the floor or behind the ceiling. Furthermore, since waste materials are used as a heat insulating material, it helps to prevent pollution. Thus, this invention improves the heat insulation performance, flame retardance performance, and sound absorption performance of a building.

  The fire retardant polyurethane waste material accumulated at the site of blowing the urethane foam heat insulating material for building was pulverized to a size of 10 to 30 mm by a rotary crusher. The size ratio of the pulverized product is 30% by weight for 10 mm, 40% by weight for 20 mm, and 30% by weight for 30 mm.

  The obtained pulverized material was blown into a gap 4 in the ceiling 3 of the building 1 shown in FIG. 1 to a height of 300 mm using a blowing machine to form a heat insulating material 6. The heat insulating material 6 was seamless, and was easily and reliably formed even when there were obstacles such as hanging trees and wiring in the gap 6. In addition, the waste material as a material can be used effectively even though it must be discarded, and it has been useful for preventing pollution.

  A part of this heat insulating material was sampled as a test piece, and a heat insulation test and a sound absorption test were performed.

In the heat insulation test, the test piece is sandwiched between the lower heating plate and the upper cooling plate, the upper and lower surface temperatures of the test piece are measured with a thermocouple, and the thermal conductivity is calculated by the formula λ = [Q _h + Q _c / 2] × [ L / (T _h −T _c ) · S]. Where λ is the thermal conductivity [W / mk], Q _h is the heating side passing heat flow [W / m ² ], Q _c is the cooling side passing heat flow [W / m ² ], and L is the specimen thickness [m ], T _h is the heating surface temperature [℃], the T _c is the cooling surface temperature [℃], S 1/2 the protective thermal plate gap area between the main heat plate area + main hot plate [m ^2] . The thermal conductivity is 0.030 kcal / m · h · ° C., which is superior to the thermal conductivity of glass wool 0.045 kcal / m · h · ° C.

In the sound absorption test, the sound absorption coefficient of air layer 0 mm and 50 mm was measured according to JIS A1405 for each frequency of 100 to 2,000 [H _Z ]. The sound absorption coefficient was about 20 to 80% for both the air layers 0 mm and 50 mm, which was remarkably superior to the blank sound absorption coefficient 0 to 20%.

  As described above, the present invention has the following advantages because the heat insulating material is formed under the floor or under the ceiling by blowing the pulverized material of the flame-retardant polyurethane under the floor or under the ceiling of the building. ing.

1. Since the pulverized material is blown, there is no seam in the heat insulating material. For this reason, condensation does not occur and there is little heat insulation loss.

2. As in the past, since many pieces of heat insulating material are not pasted together, but the pulverized material is blown in, the heat insulating material can be easily and reliably formed even if there are obstacles such as hanging trees and wiring.

3. Uses flame-retardant polyurethane industrial waste as a heat insulation material, which helps to prevent pollution.

4). Therefore, the heat insulation performance, flame retardance performance, and sound absorption performance of the building can be easily and reliably improved.

It is sectional drawing of the state which blown into the ceiling back of the wooden house for homes, and formed the heat insulating material. It is the sectional view on the AA line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Building 2 Top plate 3 Ceiling back 4 Clearance 5 Ground material 6 Heat insulating material

Claims (6)

  Insulation is formed under the floor or under the ceiling by blowing pulverized flame retardant polyurethane waste under the floor or under the ceiling of the building to improve the heat insulation performance, flame retardant performance, and sound absorption performance of the building. A heat insulation construction method for buildings.   The heat insulation method for a building according to claim 1, wherein the pulverized product is pulverized to a size of 10 to 30 mm.   2. The heat insulation method for a building according to claim 1, wherein the pulverized product comprises 30% by weight of a size of 10 mm, 40% by weight of a size of 20 mm, and 30% by weight of a size of 30 mm.   The heat insulation construction method for a building according to claim 1, wherein the pulverized material is blown to a height of 200 to 300 mm.   The heat insulation method for a building according to claim 1, wherein the pulverized material is blown by a blowing machine to form a heat insulating material. The heat insulation method for a building according to claim 1, wherein the pulverized product contains 1 to 10 percent by weight of carbon powder or activated carbon powder.

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