JP2006307591A - Outside heat insulating method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an outside heat insulating method which is excellent in durability without forming a protective layer outside and allows construction to be simply carried out, and also to provide a folded plate roof by the outside heat insulating method. <P>SOLUTION: The folded plate roof 2 is formed by unevenly processing a flat plate shaped steel plate to be an almost corrugated shape in a cross section, and the folded plate roof 2 is fixed on a beam 1 in a work site. When the unevenly processed folded plate roof 2 is fixed on the beam 1, an inorganic-based foamed body 3 is adhered on an upper face of the folded plate roof 2 by an adhesive. The inorganic-based foamed body 3 is adhered on the folded plate roof 2 without forming a space between the folded plate roof 2 and the inorganic-based foamed body 3. Accordingly, construction becomes simple and durability of the whole roof is improved without forming the protective layer such as a waterproof sheet outside the folded plate roof 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an outer heat insulating method, and more particularly, to an outer heat insulating method suitable for folded plate roofs of factories, gymnasiums, and the like.

  Conventionally, a heat insulating material has been provided on a roof portion of a building. As such a heat insulating method, a method called an inner heat insulating method and a method called an outer heat insulating method are widely used. In the inner heat insulating method, a heat insulating material is provided below the roof material of the building (indoor side), and in the outer heat insulating method, the heat insulating material is provided above the roof material of the building (outdoor side). And both construction methods can keep the temperature in a building favorable by preventing that the temperature in a building rises or falls rapidly by this heat insulating material.

An example of the inner heat insulation method is described in Patent Document 1, and an example of the outer heat insulation method is described in Patent Document 2.
Japanese Patent Laid-Open No. 8-120837 Japanese Patent Laid-Open No. 5-230952

However, the conventional technique has the following problems.
In other words, in the conventional inner heat insulation method including the technique described in Patent Document 1, the heat insulating material is provided on the indoor side, and the roof material made of a steel plate is exposed. There was a problem that it was exposed and easily damaged, and a problem that a big noise was generated because the wind and wind directly hit the roofing material.

  In addition, in the conventional outer heat insulation method including the technique described in Patent Document 2, since the heat insulating material is weak to ultraviolet rays and sucks water, a protective layer such as a protective plate or a waterproof sheet must be provided on the upper surface of the heat insulating material. There were problems such as problems and complicated work.

In particular, in the case where the roofing material is a folded plate roof used for buildings such as factories and gymnasiums, the following problems including the usual problems are known.
First, in the conventional inner heat insulation method, the steel sheet is exposed outdoors. Therefore, there is a problem that rust is easily generated on the steel sheet due to wind and rain. In addition, the steel sheet expands and contracts with changes in temperature during the day or season, and as a result of long-term use, the steel sheet tends to become brittle.

  Moreover, since such a folded-plate roof is a large-sized member, there is a limit in carrying in as a long thing, and it is almost the case where a roll-shaped steel plate is carried in and processed by uneven | corrugated processing on-site. The same applies to the construction of a heat insulating roof, and a roll with a heat insulating material attached in advance is carried in and constructed on site.

FIG. 4 is a schematic view showing an example of a steel sheet roll for folded plate roof to which a heat insulating material is attached. As illustrated, a heat insulating material 32 is affixed to one surface of the steel plate 31, and both the steel plate 31 and the heat insulating material 32 are wound in a roll shape. Since it is handled as such a package, the thickness l ₁ of the heat insulating material 32 inevitably becomes thin, and is at most about 5 mm. Therefore, there has been a problem that a sufficient heat insulation effect cannot be obtained by the conventional heat insulation method for folded plate roofs.

  In addition, it is also possible to carry in a thick inner heat insulation folded-plate roof by carrying in a steel plate and a heat insulating material separately, and processing on-site. However, heat insulation made of glass wool or wood wool cement board is usually not easy to handle with respect to folded-plate roofs, significantly increases the construction process, increases construction costs, and is not required to the living environment level as a factory roof or gymnasium roof. Not practically adopted.

  On the other hand, the outer insulation method has the following problems. First, the outline | summary of the folded-plate roof by the conventional external heat insulation construction method is demonstrated. FIG. 5 is a cross-sectional view showing a roof portion of a building in which a conventional outer heat insulating method is used. This building includes a longitudinal beam 11, a folded plate roof 12 provided on the beam 11, and a heat insulating material 13 provided on the folded plate roof 12. Moreover, although illustration is abbreviate | omitted, the protective layer is provided in the outer side of the heat insulating material 13 similarly to the past.

  The folded plate roof 12 is a long member having a substantially corrugated cross section, and is fixed on the beam 11 extending in the horizontal direction. The heat insulating material 13 is a flat plate member having a predetermined thickness, and is provided on the upper surface of the folded plate roof 12. Moreover, although not shown in figure, the heat insulating material 13 is being fixed to the folded-plate roof 12 with the volt | bolt, the nut, etc.

  Because of such a structure, a plurality of large spaces A are generated between the folded plate roof 12 and the heat insulating material 13. Therefore, even if the heat insulating material itself is a member that does not retain water, there is a problem in that a dew point is structurally present on the folded plate roof 12 in the space A portion, and dew condensation occurs in this portion.

  Moreover, since the folded-plate roof 12 and the heat insulating material 13 are being fixed with the volt | bolt, the nut, etc., there exists a problem that rust tends to generate | occur | produce from this part.

  Also, in the outer heat insulation method, it is conceivable to provide a heat insulating material along the upper surface of the folded plate roof, but in this case as well, the heat insulating material and the folded plate roof are wound into a roll shape in the same manner as described above. This causes the same problems as described above.

  The present invention has been made in view of the above, and provides an outer heat insulating method or a folded plate roof by the outer heat insulating method that has excellent durability and realizes simple construction work without providing a protective layer on the outside. For the purpose.

  In order to achieve the above object, the outer heat insulating method according to claim 1 is an outer heat insulating method in which a heat insulating material is provided above a steel plate roof of a building, and the plate-like inorganic foam is It is characterized by being attached in close contact along the upper surface of the steel plate roof.

That is, in the invention according to claim 1, in order to provide a plate-like inorganic foam along the upper surface (outdoor side surface) of the steel plate roof, the steel plate roof and the inorganic foam are in close contact with each other and between the inorganic foams. Since there is no macroscopic space inside the foam, no dew point is generated, and the occurrence of dew condensation can be prevented.
In addition, since inorganic material is used, it is superior in weather resistance compared to conventionally used organic materials, for example, it is not necessary to provide a protective layer such as a waterproof sheet on the upper surface, and it is exposed on the upper surface of the steel sheet roof Can be provided. Moreover, since a wind and rain does not hit a steel plate roof directly, deterioration of a steel plate roof can be prevented and it can prevent that a noise becomes large. In addition, since it is a foam material, its specific gravity is light and easy on-site processing, such as trimming, makes it possible to achieve simple construction. In particular, an outer heat insulating structure can be easily realized even for an existing steel sheet roof.

  Further, the outer heat insulating method according to claim 2 is the outer heat insulating method according to claim 1, wherein the inorganic foam is in an amount of 50 to 95 parts by weight of an inorganic filler, 2 to 20 parts by weight of a foaming agent, and organic. A foam having fire resistance performance formed by adding 30 to 120 parts by weight of a solvent and 5 to 50 parts by weight of a vinyl chloride resin, kneading to make a compound, and heating and foaming the compound in a mold, which is formed as described above The inorganic foam is attached to the upper surface of the steel plate roof by adhesion.

  That is, the invention according to claim 2 realizes a steel plate roof structure having fire resistance. In addition, since the ratio of the inorganic material is high, the weather resistance is high, and the foam structure using the organic material easily repels water and prevents the material itself from causing condensation. Also, it is difficult to retain water. Furthermore, a steel plate roof made of a heat insulating material having a desired thickness and a desired shape using a mold can be constructed. In addition, since construction by adhesion is possible, it is possible to prevent deterioration of the steel sheet roof due to water penetration.

  The invention according to claim 3 is characterized in that, in the outer heat insulating method according to claim 2, calcium carbonate, talc, and / or serpentine is used as the inorganic filler.

  That is, the invention according to claim 3 also has a property as a non-combustible material.

  The outer heat insulating method according to claim 4 is the outer heat insulating method according to claim 1, 2, or 3, wherein the steel plate roof is a folded plate roof that has been processed to be uneven so that the cross-sectional shape is substantially corrugated, The inorganic foam is bonded to the upper surface of the folded plate roof after the uneven processing so that no space is formed between the inorganic foam and the folded plate roof.

That is, the invention according to claim 4 can increase the thickness of the inorganic foam since the inorganic foam is adhered to the upper surface (outdoor side surface) of the folded plate roof. Specifically, in the construction, first, in order to bond the inorganic foam to the upper surface of the folded plate roof, after that, on the site, the flat plate steel plate is processed into a concavo-convex shape such that it is folded into a substantially corrugated cross section. An inorganic foam having a desired thickness can be provided, and a sufficient heat insulating effect can be obtained.
In this case, the thickness of the inorganic foam is, for example, 10 to 20 mm.

  As described above, according to the present invention, without providing a protective layer on the outside, it is possible to provide an outer heat insulating method that is excellent in durability and realizes a simple construction work or a folded plate roof by the outer heat insulating method.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view showing a part of a building using a heat insulation method according to an embodiment of the present invention. Moreover, FIG. 2 is a figure which shows the cross-sectional state of the building shown in FIG.

  1 and 2 show the structure of a part of a folded-plate roof of a building. That is, this building is provided with a longitudinal beam 1, a folded plate roof 2 placed on the beam 1, and an inorganic foam 3 provided on the folded plate roof 2. In this building, the outer heat insulating method is adopted, and the inorganic foam 3 which is a heat insulating material is provided above the folded roof of the folded roof.

  The beam 1 is a long member formed of H-shaped steel and extends in the horizontal direction. For example, the beam 1 is mounted on a pillar extending in a vertical direction (not shown) so as to maintain a horizontal state with a bolt, a nut, or the like. In FIG. 1 and FIG. 2, only one beam 1 is shown, but a plurality of beams 1 are actually provided.

The folded plate roof 2 is a long member having a substantially corrugated cross section, and includes a lower surface portion 21 closely contacting the beam 1, a vertical surface portion 22 rising from the lower surface portion 21, and an upper surface portion 23 positioned above the vertical surface portion 22. Are continuously connected.
The lower surface portion 21 is a portion constituting a surface having a constant width and extends in a direction orthogonal to the length direction of the beam 1. The plurality of lower surface portions 21 are in close contact with the upper surface of the beam 1 at regular intervals in the length direction of the beam 1.

The vertical surface portion 22 is a surface that rises from both ends of the lower surface portion 21 in the short direction so as to be slightly inclined upward from the lower surface portion 21.
The upper surface portion 23 is a portion constituting a surface having a constant width, and both ends in the short direction are joined to upper portions of two adjacent vertical surface portions 22.
That is, the folded plate roof 2 is made of a flat steel plate so that the lower surface portion 21, the vertical surface portion 22, the upper surface portion 23, the vertical surface portion 22, and the lower surface portion 21 are arranged in this order along the length direction of the beam 1. It is configured by being bent into a substantially waveform.
And the folded-plate roof 2 is fixed on the beam 1 by attaching the lower surface part 21 to the beam 1 with a volt | bolt, a nut, etc. (not shown).
The folded plate roof 2 is formed by, for example, bending a galvalume steel plate.

The inorganic foam 3 is a heat insulating material formed by using an inorganic filler as a base material, adding an additive such as a vinyl chloride resin, a foaming agent or an organic solvent, kneading, and further heating and foaming. .
Specifically, the inorganic foam 3 is kneaded by adding 2 to 20 parts by weight of a foaming agent, 30 to 120 parts by weight of an organic solvent, and 5 to 50 parts by weight of a vinyl chloride resin to 50 to 95 parts by weight of the inorganic filler. The compound is formed by heating and foaming the compound in a mold.

  Examples of inorganic fillers include hydroxides such as aluminum hydroxide, magnesium hydroxide and calcium hydroxide, carbonate compounds such as calcium carbonate and magnesium carbonate, compounds having crystal water such as gypsum and aluminum sulfate, and the like. And compounds such as asbestos, talc, bennite and clay, or silicates and serpentine. And these compounds can be used individually or in mixture of 2 or more types. The inorganic filler is preferably 52 to 90 parts by weight, more preferably 54 to 80 parts by weight.

  As the vinyl chloride resin, any polymer having vinyl chloride as a main component of the monomer may be used, and general vinyl chloride resins can be widely used. The vinyl chloride resin is preferably 10 to 48 parts by weight, more preferably 20 to 46 parts by weight.

  Examples of the foaming agent include organic foaming agents azodicarbonamide, azobisisobutylnitrile, dinitrosopentatetramine, P-toluenesulfonyl hydrazide, P, P′-oxybis (benzenesulfonylhydrazide), etc., sodium bicarbonate, which is an inorganic foaming agent, Examples include ammonium chloride. The foaming agent is preferably 5 to 15 parts by weight.

  As the organic solvent, commonly used ones can be widely used, but toluene, xylene and the like are particularly preferable. The organic solvent is preferably 30 to 100 parts by weight, more preferably 40 to 90 parts by weight.

  In addition, plasticizers, metals, metal compounds, flame retardants, ceramics, minerals, and the like can be added. For example, carbon black can be used as an additive.

  These mixed compounds are filled in a mold, and then, for example, the mold is heated to 140 ° C. to 170 ° C., and after the reaction is sufficiently performed in the mold, the mold is cooled to room temperature. Remove the product from the mold.

  The product taken out from the mold is heated again by an oven or the like under normal pressure, and then becomes an inorganic foam 3. Thus, since the inorganic foam 3 is molded by a mold, it can be formed as it is, and can be cured by changing its shape in various ways.

  Here, one manufacturing method of the inorganic foam 3 will be described. 40 parts by weight of vinyl chloride resin, 30 parts by weight of calcium carbonate as an inorganic filler, 15 parts by weight of talc, 15 parts by weight of serpentine, 4 parts by weight of azobisisobutylnitrile, 4 parts by weight of dinitrosopentatetramine, and other As an additive, 4 parts by weight of a urea foaming aid is placed in a kneader and mixed for 5 minutes. Next, 70 parts by weight of toluene as an organic solvent is gradually added and kneaded for 1 hour. The compound obtained by kneading is filled in the mold without any gaps in the pressurized state, and the upper part is covered and pressed by a press. In this state, the resin is heated to gel the vinyl chloride resin, and at the same time, the foaming agent is decomposed.

  After sufficient gelation and decomposition, the mold is cooled to room temperature in a pressurized state and the product is taken out. The product is heated again at normal pressure and expanded to a predetermined size. After reaching the predetermined dimensions, it is once cooled down to room temperature and gradually heated again to evaporate toluene from the product and completely remove it. The inorganic foam obtained by this production method can be sliced very easily and can be easily molded to a desired size. This inorganic foam is easily plasticized by reheating and can be post-processed by hot press molding.

  In the present embodiment, the inorganic foam 3 is a calcium carbonate foam plate having a predetermined thickness and formed in a plate shape, and the predetermined thickness L is, for example, 10 to 20 mm. Can do. In addition, the inorganic foam 3 including those manufactured by the above-described manufacturing method has high weather resistance due to the high ratio of the inorganic material, and the combination of the point of using the organic material and the foam structure, so-called wetting. It is not durable and has the property of not sucking water, so it is highly durable. In addition, a calcium carbonate foam plate using a predetermined material also has a property as a non-combustible material. Specific examples of such inorganic foam 3 include trade name Rock Cell Board (manufactured by Fuji Kasei Kogyo Co., Ltd.).

  Moreover, since the inorganic foam 3 has a foamed structure, it has high workability and can be easily cut into a desired shape by, for example, a cutter. That is, in FIG. 1 and FIG. 2, the inorganic foam 3 produces a macroscopic gap with the folded plate roof 2 by variously processing and laminating the plate-like inorganic foam 3. It can be avoided. This will be described later.

FIG. 3 is a diagram for explaining a construction procedure in the heat insulation method.
In this heat insulation method, first, the beam 1 is fixed in a horizontal state above a pillar (not shown) (see FIG. 3A). In FIG. 3, only one beam 1 is shown. For example, a plurality of beams 1 are similarly fixed in a horizontal state, and these beams 1 are arranged in parallel at a predetermined interval. ing.
Then, at the site, the plate-shaped steel plate is processed to be concavo-convex so as to have a substantially corrugated cross section to form the folded plate roof 2, and the folded plate roof 2 is placed on the beam 1. At this time, the folded plate roof 2 is provided such that the lower surface portion 21 is in close contact with the upper surface of the beam 1 and the longitudinal direction thereof is along the longitudinal direction of the beam 1. And the folded-plate roof 2 is fixed to the beam 1 because the lower surface part 21 of the folded-plate roof 2 is fixed to the beam 1 with a volt | bolt, a nut, etc. (refer FIG.3 (b)).

  If the folded-plate roof 2 formed by uneven | corrugated processing is fixed on the beam 1, then the inorganic type foam 3 will be adhere | attached on the upper surface of the folded-plate roof 2 with an adhesive agent. As the adhesive, for example, an adhesive having weather resistance is used. At this time, the inorganic foam 3 is bonded to the folded plate roof 2 so that no space (gap) is generated between the folded plate roof 2 and the inorganic foam 3 (see FIG. 3C). .

  Specifically, the folded plate roof 2 has a substantially corrugated cross section, and the inorganic foam 3 is formed into a plate shape. For example, as shown by a broken line in FIG. Then, a plurality of inorganic foams 3 having various shapes along the lower surface portion 21, the vertical surface portion 22 and the upper surface portion 23 of the folded plate roof 2 are prepared in advance, and the inorganic foam bodies 3 are respectively The lower surface portion 21, the vertical surface portion 22, and the upper surface portion 23 are bonded with an adhesive. And the joint surface of each inorganic foam is also adhere | attached.

In this way, the inorganic foam 3 is provided on the upper surface of the folded plate roof 2 without creating a macroscopic space between the folded plate roof 2 and the inorganic foam 3.
In the above description, the inorganic foam 3 is formed into a plate shape. However, the shape of the mold for molding the inorganic foam 3 is set to be a shape along the upper surface of the folded plate roof 2 and molded. The shape of the later inorganic foam 3 may be in close contact with the upper surface of the folded plate roof 2 without any gap. In this way, it is not necessary to cut the inorganic foam 3, so that the inorganic foam 3 can be provided on the folded plate roof 2 more easily.

  As described above, in this embodiment, since the plate-like inorganic foam 3 is provided along the upper surface of the folded-plate roof 2, the folded-plate roof 2 and the inorganic foam 3 are in close contact with each other and between the inorganic foams. A dew point is not generated inside the foam 3, and it is possible to prevent dew condensation. Further, since the inorganic foam 3 is attached to the upper surface of the folded plate roof 2, it is not necessary to provide a protective layer such as a waterproof sheet on the upper surface, and it is provided in an exposed state on the upper surface of the folded plate roof 2. it can. Therefore, construction can be simplified. Moreover, since wind and rain do not directly hit the folded-plate roof 2, it is possible to prevent the folded-plate roof 2 from being rusted or becoming noisy.

  Moreover, since the inorganic foam 3 is bonded to the upper surface of the folded plate roof 2 with an adhesive, the inorganic foam 3 can be easily attached to the folded plate roof 2, and the construction can be performed more easily. . Further, when the inorganic foam 3 is damaged, the damaged portion may be peeled off from the folded roof 2 and the inorganic foam 3 may be bonded, so that the repair can be easily performed. Moreover, since the inorganic foam 3 has high weather resistance and has the performance of not sucking water, it becomes a heat insulating material with excellent durability. Moreover, since parts, such as a volt | bolt and a nut, are not used, rust does not arise in the folded-plate roof 2, but it is excellent in durability as the whole roof.

Moreover, after making the unevenness | corrugation of a steel plate into the folded-plate roof 2, in order to adhere | attach the inorganic type foam 3 on the upper surface of the folded-plate roof 2, the inorganic type foam 3 of desired thickness can be provided, and it is enough A good heat insulation effect.
Moreover, since the laminated structure with the inorganic foam 3 as the upper side and the folded plate roof 2 as the lower side extends over the entire area of the folded plate roof 2, the heat insulation effect can be further enhanced.
The present invention is not limited to the embodiments described above, and various modifications can be made within the scope of the claims.

It is a perspective view which shows a part of building using the heat insulation construction method concerning one Embodiment of this invention. It is a figure which shows the cross-sectional state of the building shown in FIG. It is a figure for demonstrating the construction procedure in a heat insulation construction method. It is the schematic which showed an example of the steel plate roll for folded-plate roof to which the heat insulating material was affixed. It is sectional drawing which shows the part of the roof of the building where the conventional outside heat insulation construction method was used.

Explanation of symbols

2 Folded roof 3 Inorganic foam

Claims (4)

It is an outer heat insulation construction method in which a heat insulating material is provided above the steel plate roof of the building,
A plate-like inorganic foam is attached in an intimate state along the upper surface of the steel plate roof. The inorganic foam is added to 50 to 95 parts by weight of an inorganic filler, 2 to 20 parts by weight of a foaming agent, 30 to 120 parts by weight of an organic solvent, and 5 to 50 parts by weight of a vinyl chloride resin, and kneaded to form a compound. It is a foam having fire resistance formed by heating and foaming the compound in a mold,
The outer heat insulating method according to claim 1, wherein the formed inorganic foam is attached to the upper surface of the steel plate roof by adhesion.   The outer heat insulating method according to claim 2, wherein calcium carbonate, talc, and / or serpentine are used as the inorganic filler. The steel plate roof is a folded plate roof that has been concavo-convex processed so that the cross-sectional shape is substantially corrugated,
4. The inorganic foam according to claim 1, 2 or 3, wherein the inorganic foam is bonded to the upper surface of the folded-plate roof after the uneven processing so that no space is formed between the folded-plate roof. Outside insulation method.

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