JP2007063883A - Thermal insulation method of building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To serve for preventing environmental pollution by improving thermal insulation performance, flame resistant performance or sound absorbing performance of a building by forming a thermal insulation material under the floor or in the ceiling 3 of a building 1 by a special means by using a foaming plastic material, particularly, an industrial waste material. <P>SOLUTION: The thermal insulation material 6 having the height of 200 to 300 mm is formed in clearance 4 under the floor or in the ceiling 3 by blowing a crushed material crushed in the size of 10 to 30 mm of foaming polystyrene or a mixture of this crushed material and a crushed material 5 crushed in the size of 10 to 30 mm of a flame resistant polyurethane waste material under the floor or in the ceiling 3 of the building 1 by a blowing machine; and is constituted by improving the thermal insulation performance, the flame resistant performance and the sound absorbing performance of the building 1. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a thermal insulation method for various buildings such as wooden buildings for homes and reinforced concrete buildings, and more specifically, by using foamed plastic pulverized material under the floor or ceiling of the building, especially industrial waste materials. The present invention relates to a heat insulating method for a building that is useful for preventing pollution while forming a heat insulating material by various means to improve the heat insulating performance, flame retardancy or sound absorption performance of the building.

  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-A-63-163304

  Therefore, the object of the present invention is to use foamed plastic pulverized material, especially industrial waste, under the floor or ceiling of various buildings such as wooden structures for homes, reinforced concrete structures, etc., and easily insulate by special means. Providing a heat insulation method for buildings that is formed reliably and improves the heat insulation performance, flame retardant performance or sound absorption performance of the building, helps prevent pollution, and improves the above-mentioned drawbacks of the known technology There is to do.

  In order to solve the above-described problems, according to the present invention, by blowing a foamed polystyrene pulverized product or a mixture of a foamed polystyrene pulverized product and a foamed polyurethane pulverized product under a floor or a ceiling of a building, It is characterized in that a heat insulating material is formed under the floor or in the gap between the ceilings and the heat insulating performance, flame retardant performance, and sound absorbing performance of the building are improved.

  In the present invention described above, the insulating material is provided between the floor or the ceiling by blowing a foamed polystyrene pulverized product or a mixture of the foamed polystyrene pulverized product and the foamed polyurethane pulverized product under the floor or the ceiling of the building. Since it forms, the heat insulation performance of a building, a flame retardance performance, or a sound absorption performance is improved. Furthermore, the present invention is useful for preventing pollution when industrial waste is used as a heat insulating material. 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 product 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 foamable polystyrene to a size of 10 to 30 mm using a rotary crusher. Further, the pulverized product 5 is formed by pulverizing foamable polystyrene and foamable polyurethane in the same manner, and preferably mixing at a weight ratio of 1: 1. These pulverized products may be those obtained by pulverizing architectural foaming polyurethane or foamed polystyrene blowing waste.

  The pulverized product 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 the 10 mm size by 30 wt%, the 20 mm size by 40 wt% and the 30 mm size by 30 wt%. Further, the pulverized product 5 can be deodorized by containing 1 to 10% by weight of carbon powder or activated carbon powder.

  In the present invention as described above, the heat insulating material 6 is formed by blowing a pulverized product of foamable polystyrene or a mixed pulverized product of foamable polystyrene and foamable polyurethane with a blowing machine under a floor or a gap in the ceiling. Therefore, there is no seam in the heat insulating material 6, and therefore, no condensation occurs and there is little heat 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 can be used as a heat insulating material, it helps to prevent pollution. In this way, the present invention improves the heat insulation performance, flame retardance performance, and sound absorption performance of the building.

  The foamed polystyrene waste material accumulated at the site of spraying the polystyrene foam heat insulating material for construction 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 formed easily and reliably even when obstacles such as hanging trees and wiring existed 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.

  Crushing a 1: 1 (weight) mixture of foamed polystyrene waste material collected at the site of blowing foamed polystyrene insulation material and fire-retardant polyurethane material accumulated in the same manner to a size of 10 to 30 mm with a rotary crusher. did. 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 as described above. The heat insulating material 6 was seamless and formed easily and reliably even when obstacles such as hanging trees and wiring existed 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 the heat insulating material 6 obtained in Example 1 was sampled as a test piece and subjected to a heat insulation test and a sound absorption test.

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.

Sound absorption tests for each frequency 100 to 2,000 _{[H z]} was measured according air layer 0 mm, the sound absorption coefficient of 50mm in JISA1405. The sound absorption coefficient was about 20 to 80% for both the air layer 0 mm and 50 mm, which was remarkably superior to the blank sound absorption coefficient 0 to 20%.

  As described above, the present invention provides a heat insulating material between the floor and the ceiling by blowing a foamed polystyrene pulverized product or a mixture of foamed polystyrene and foamed polyurethane under the floor or ceiling of the building. Since it is formed, it has the following advantages.

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. Since industrial waste materials such as foamed polystyrene and heat-resistant polyurethane are used as the heat insulating material, it helps to prevent pollution.

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

It is sectional drawing of the state which blown the ground material 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 Thermal insulation

Claims (8)

  By blowing foamed polystyrene foam under the floor of the building or under the ceiling to form a heat insulating material between the floor or under the ceiling to improve the heat insulation performance, flame retardancy, and sound absorption performance of the building. A thermal insulation method for buildings characterized by   By blowing a mixture of foamed polystyrene pulverized product and foamed polyurethane pulverized product under the floor of the building or under the ceiling, a heat insulating material is formed under the floor or under the ceiling, and the heat insulating performance, flame retardancy, And a heat insulation method for a building characterized by improving sound absorption performance.   The heat insulation method according to claim 2, wherein the mixing ratio of the foamed polystyrene pulverized product and the foamed polyurethane pulverized product is 1: 1 by weight.   The heat insulation method for a building according to claim 1 or 2, wherein the pulverized material is pulverized to a size of 10 to 30 mm.   The heat insulation method according to claim 1 or 2, wherein the pulverized product comprises 30% by weight of a size of 10mm, 40% by weight of a size of 20mm, and 30% by weight of a size of 30mm. .   The heat insulation method for a building according to claim 1 or 2, 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 or 2, 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 or 2, wherein the pulverized product contains 1 to 10 percent by weight of carbon powder or activated carbon powder.