JP6905846B2 - Insulation wall structure construction method, insulation wall structure, and insulation material - Google Patents

Description

The present invention relates to a method of constructing a heat insulating wall structure applicable to a building such as a building, a heat insulating wall structure, and a heat insulating material.

In recent years, a PC method using a PC (precast concrete) plate as a wall body is often used for the construction of a building frame. In the PC method, after the PC board, which is the basis of the skeleton, is manufactured at the factory, it is brought to the construction site and assembled and installed as designed. An ALC (lightweight cellular concrete) plate may be used instead of the PC plate.

Further, with the recent increase in energy saving and needs for zero energy houses / buildings, the buildings assembled by the PC method as described above are required to have good heat insulation performance. As a method of providing a heat insulating structure on a concrete wall constructed by the PC method, there are mainly an adhesive method in which a styrene-based panel-shaped heat insulating material is attached to the wall with an adhesive, and a urethane-based material is directed toward the wall. An example is a spraying method in which foam is foamed and sprayed directly onto the wall. However, due to poor workability and high construction cost, the frequency of use of the adhesive method has decreased, and the use of the spray method has become the mainstream.

However, the spraying method has problems such as requiring a high degree of specialization and technical ability for the spraying work of urethane-based materials and requiring careful curing work, and a construction method alternative to the spraying method has been desired. .. For example, in Patent Document 1, in a heat insulating wall structure in which a heat insulating plate made of a synthetic resin foam is attached to the inside of a concrete molded plate, the heat insulating plate is separately bonded to each concrete molded plate, and the heat insulating plate side. A heat insulating wall structure is disclosed in which the edge portion is a flexible easily compressed portion as compared with the central portion of the heat insulating plate.

Japanese Patent No. 5057470

As disclosed in Patent Document 1 described above, a construction method using an adhesive has been proposed for applying a foamed resin-based heat insulating material to a concrete wall structure such as a concrete molded plate. However, the construction method using an adhesive has the problem that it is necessary to cure for a certain period of time in order to develop a predetermined strength in the heat insulating wall structure, and there is a problem that the work efficiency is lowered and the construction cost is increased. there were.

The present invention has been made in view of the above circumstances, and provides a method for constructing a heat insulating wall structure, a heat insulating wall structure, and a heat insulating material, which can improve work efficiency and reduce construction costs.

The method for constructing the heat insulating wall structure according to the present invention includes a primer application step of applying a primer to one wall surface of a concrete wall and a compressive strength of 10 N / cm ² or more on the surface of the primer via an adhesive tape material. 100 N / cm ² or less, and possess a thermal insulating material placing step of bending strength is placed a rectangular insulation is 15N / cm ² or more 200 N / cm ² or less, wherein the the surface of the primer It is characterized in that the heat insulating material is provided without using an adhesive.

According to the above configuration, in the primer coating step, a smooth surface can be formed on the surface of the primer by applying the primer to one wall surface of the wall surface. In the subsequent heat insulating material installation step, since the heat insulating material is installed on the smooth surface via the adhesive tape material, the adhesive tape material can be reliably adhered to the primer forming the smooth surface. Therefore, it is possible to shorten the curing period required for developing strength as in the case of using a conventional adhesive, so that the work efficiency can be improved and the construction cost can be suppressed.

In the method for constructing the heat insulating wall structure according to the present invention, the adhesive tape material is provided on the outer peripheral portion of the surface facing the primer in a non-intersecting state and is provided in a non-intersecting state so as to hang between the long sides of the outer peripheral portion. The heat insulating material may be installed on the surface of the primer without using an adhesive.

According to the above configuration, the adhesive tape materials are arranged between the smooth surface of the primer and the surface of the heat insulating material facing the primer (hereinafter, may be referred to as the primer facing surface) without overlapping each other. The thickness interval between the smooth surface of the primer and the surface facing the primer in the heat insulating material becomes substantially uniform, and it is possible to carry out construction corresponding to the unevenness formed on the wall and the heat insulating material, and the adhesion between the wall and the heat insulating material can be performed. The sex can be improved.

In the method for constructing a heat insulating wall structure according to the present invention, in the heat insulating material installation step, the adhesive tape material is applied to a portion of the surface of the primer facing the outer peripheral portion of the surface of the heat insulating material which is arranged to face the primer. The heat insulating material may be installed on the surface of the primer without using an adhesive after it is provided in a non-intersecting state and is provided in a non-intersecting state so as to hang between the long sides of the outer peripheral portion.

According to the above configuration, an adhesive tape material may be provided in advance on the surface of the heat insulating material facing the primer, and the heat insulating material may be attached to the surface of the primer via the adhesive tape material at a construction site or the like, thus improving work efficiency. be able to. The work of providing the adhesive tape material on the primer facing surface of the heat insulating material may be performed before the primer coating step, or may be performed after the primer coating step and before the heat insulating material installation step.

In the method for constructing a heat insulating wall structure according to the present invention, a plurality of the heat insulating materials may be installed on the surface of the primer in the heat insulating material installation step. Further, the method for constructing the heat insulating wall structure according to the present invention may include an airtight tape material installation step of installing the airtight tape material so as to cover the seams between the plurality of heat insulating materials after the heat insulating material installation step. ..

According to the above configuration, a plurality of heat insulating materials can be formed and used in a size that is easy to transport and handle, and work efficiency can be improved. Further, since the joint between the plurality of heat insulating materials is covered with the airtight tape, it is possible to prevent the moisture on the indoor side from entering the outdoor side from the joint between the plurality of heat insulating materials, and to achieve good heat insulating performance.

In the method for constructing a heat insulating wall structure according to the present invention, a heat insulating material composed of a thermosetting resin foam may be used as the heat insulating material.

According to the above configuration, by using the heat insulating material composed of the thermosetting resin foam, the thermal conductivity of the heat insulating material can be reduced and the heat insulating performance of the heat insulating wall structure can be improved. Therefore, the thickness and amount of the heat insulating material can be suppressed, and the construction cost can be suppressed.

In the heat insulating wall structure according to the present invention, a concrete wall, a primer applied in a rectangular shape to one wall surface of the wall, and an outer peripheral portion of the surface of the primer are arranged in a non-intersecting state, and the outer peripheral portion thereof. Adhesive tape material arranged in a non-intersecting state so as to span between the long sides, and compressive strength placed on the surface of the adhesive tape material without using an adhesive is 10 N / cm ² or more 100 N / cm ² It is characterized by having a rectangular heat insulating material having a bending strength of 15 N / cm ² or more and 200 N / cm ^{2 or less.}

According to the above configuration, since the heat insulating material is installed on the smooth surface of the primer via the adhesive tape material, it is possible to carry out the construction corresponding to the unevenness formed on the wall and the heat insulating material, and the wall and the heat insulating material can be constructed. And are well adhered. According to such a heat insulating wall structure, the work at the time of construction can be smoothly and easily carried out, and the construction cost can be suppressed.

In the heat insulating wall structure according to the present invention, the adhesive tape material is provided in a non-intersecting state on the outer peripheral portion of the surface of the heat insulating material facing the primer and is non-intersecting so as to hang between the long sides of the outer peripheral portion. It may be provided in a state.

According to the above configuration, since the adhesive tape materials are arranged so as not to overlap each other, the thickness interval between the smooth surface of the primer and the primer facing surface of the heat insulating material becomes substantially uniform, and is formed on the wall and the heat insulating material. Construction can be done in response to uneven land.

In the heat insulating wall structure according to the present invention, a plurality of the heat insulating materials may be installed, and an airtight tape material may be provided to cover the seams between the plurality of the heat insulating materials.

According to the above configuration, since the seams between the plurality of heat insulating materials are covered with the airtight tape, the humidity on the indoor side does not infiltrate from the seams between the plurality of heat insulating materials to the outdoor side, and good heat insulating performance can be obtained. Be done.

In the heat insulating wall structure according to the present invention, the heat insulating material is preferably a thermosetting resin foam.

According to the above configuration, the thermal conductivity of the heat insulating material is reduced, and the heat insulating performance of the heat insulating wall structure is surely enhanced. Therefore, the thickness and the amount of the heat insulating material used can be suppressed, and the construction cost of the heat insulating wall structure can be suppressed.

The heat insulating material according to the present invention has a compressive strength of 10 N / cm ² or more and 100 N / cm for installation on the one wall surface of a concrete wall coated with a primer on one wall surface without using an adhesive. ^A rectangular heat insulating material having a bending strength of 15 N / cm ² or more and 200 N / cm ² or less, which is provided on the outer peripheral portion of the surface facing the primer in a non-intersecting state and is provided on the outer peripheral portion in a non-intersecting state. It is characterized by having an adhesive tape material provided in a non-intersecting state so as to hang between the long sides of the portion.

According to the above configuration, since the adhesive tape materials are arranged so as not to overlap each other, they can be easily installed on the surface of the primer without requiring specialized techniques, and the smooth surface of the primer and the primer of the heat insulating material can be easily installed. A heat insulating material having a substantially uniform thickness interval with the facing surface can be obtained. By using such a heat insulating material, the work efficiency when installing the heat insulating material on the surface of the primer applied to the concrete wall is improved, and the construction cost can be suppressed.

According to the method of constructing the heat insulating wall structure, the heat insulating wall structure, and the heat insulating material according to the present invention, the work efficiency can be improved and the construction cost can be suppressed.

It is a rear view (that is, the view seen from the indoor side) of the heat insulating wall structure which concerns on this invention. It is a top view of the heat insulating wall structure which concerns on this invention. It is a front view of the heat insulating material (that is, the view seen from the outdoor side), (a) is a view of the heat insulating material according to the present invention, and (b) is provided with adhesive tape materials in an intersecting state as in the conventional case. It is a figure of the heat insulating material which is used. It is a top view for demonstrating the construction method of the heat insulating wall structure which concerns on this invention. It is a top view for demonstrating the modification of the construction method of the heat insulating wall structure which concerns on this invention. It is a top view for demonstrating another modification of the construction method of the heat insulating wall structure which concerns on this invention. It is a side sectional view of the modification of the heat insulating wall structure which concerns on this invention. It is a side sectional view of another modification of the heat insulating wall structure which concerns on this invention.

Hereinafter, a method of constructing a heat insulating wall structure, a heat insulating wall structure, and an embodiment of a heat insulating material according to the present invention will be described with reference to the drawings. The drawings used in the following description are schematic, and the length, width, thickness ratio, etc. are not always the same as the actual ones and can be changed as appropriate.

(Insulation wall structure, insulation)
First, an embodiment of a heat insulating wall structure and a heat insulating material according to the present invention will be described. As shown in FIGS. 1 and 2, the heat insulating wall structure 2 to which the present invention is applied includes a concrete wall 4, a primer 6 applied to a wall surface (one wall surface) 4a on the indoor side of the wall 4, and a primer. The adhesive tape material 8 arranged on the surface 6a of the adhesive tape material 8, the plurality of heat insulating materials 10 arranged on the surface 8a of the adhesive tape material 8, and the airtight tape material 20 covering the joint G between the plurality of heat insulating materials 10 are attached. Have.

The wall 4 is at least made of concrete, but may be a wall constructed by, for example, a PC construction method, and the construction method is not particularly limited. Examples of the concrete constituting the wall 4 include PC and ALC, but the concrete is not particularly limited as long as it is concrete.

As shown in FIG. 2, the primer 6 is applied to the wall surface 4a of the wall 4 as a so-called base material, and is not particularly limited as long as it can be applied to a concrete wall. The thickness of the primer 6 is not particularly limited as long as the surface roughness of the surface 6a of the primer 6 is appropriately achieved.

As a preferable example of the primer 6, it can be used on a relatively rough surface such as the wall surface 4a of the wall 4, and can be applied to the wall surface 4a by spraying with a spray glue Z3 (manufacturer / distributor: Konishi). (Co., Ltd.), etc., and examples of the primer 6 include rubber-based resins, epoxy resins, polyolefin resins such as polyethylene and polypropylene, alkyd resins, polyester resins, etc., and these are solvent-based resins that are dissolved and dispersed in a solvent. However, it may be a solvent-free type.

As shown in FIG. 3A, the adhesive tape material 8 is provided at least on the outer peripheral portion 10r of the primer facing surface (the surface facing the primer in the heat insulating material) 10b of the heat insulating material 10 and the inner portion 10n of the outer peripheral portion 10r. Has been done. Specifically, on the primer facing surface 10b of the heat insulating material 10, the adhesive tape material 8A and the long side of the heat insulating material 10 are parallel to the short side of the heat insulating material 10 (here, the lateral direction of the paper surface) in front view on the outer peripheral portion 10r. Adhesive tape material 8B parallel to (here, in the vertical direction of the paper surface) in front view, and a plurality of adhesives arranged in parallel to the short side of the heat insulating material 10 in front view at the inner portion 10n and at predetermined intervals from each other. A tape material 8C is provided.

The adhesive tape material 8 is provided in a non-intersecting state. Here, the "non-intersecting state" is not a state in which an intersecting portion 8x in which a plurality of adhesive tape materials 8 intersect with each other exists as shown in FIG. 3 (b), but as shown in FIG. 3 (a). In addition, a state in which the plurality of adhesive tape materials 8 provided on the primer facing surface 10b of the heat insulating material 10 do not intersect at all (a state in which the plurality of adhesive tape materials are not laminated). That is, the adhesive tape materials 8A and 8C are arranged with their respective longitudinal ends connected to the adhesive tape 8B or with a slight gap. As a result, the step due to the adhesive tape material is reduced, and a gap is less likely to occur between the heat insulating material 10 and the wall surface 4a. It is desirable that the plurality of adhesive tape materials are not laminated, but the state in which the plurality of adhesive tape materials are slightly laminated is not excluded, and even if the plurality of adhesive tape materials are slightly laminated, the heat insulating material 10 and the wall surface 4a It suffices if there is no gap between them.

3 (a) is a view illustrating the one example of a state in which the adhesive tape material 8 is provided in a non-cross state, unless each other a plurality of adhesive tape material 8 intersect at all "non-intersecting state" include. In the non-intersecting state, in addition to the example shown in FIG. 3A , for example, at least one of the adhesive tape materials 8C may be inclined downward to the left or downward to the right in front view.

The thickness of the adhesive tape material 8 is preferably 0.1 mm or more and 3.0 mm or less, and preferably 0.5 mm or more and 1.5 mm or less. If the thickness of the adhesive tape material 8 is 0.1 mm or more, the adhesive tape has irregularities formed on the surface 6a of the primer 6 and the primer facing surface 10b of the heat insulating material 10 intervening between these surfaces. It is absorbed by the material 8. Further, when the thickness of the adhesive tape material 8 is 3.0 mm or less, the gap between the surface 6a of the primer 6 and the primer facing surface 10b of the heat insulating material 10 is appropriately suppressed to prevent moisture from entering or staying in the gap. can do.

The adhesive tape material 8 satisfying the above conditions is a so-called strong double-sided tape, which is formed by providing a release film or a release paper on both sides of a long base material made of polypropylene specially copolymerized with an acrylic olefin. It may be the one that has been done. By using such an adhesive tape material 8, the adhesive tape material 8 can be easily and quickly attached to a desired position on the primer facing surface 10b of the heat insulating material 10. An example of such an adhesive tape material 8 is SJ tape (manufacturer / distributor: Sekisui Chemical Co., Ltd.).

The heat insulating material 10 is a heat insulating material for being installed on the wall surface 4a of the concrete wall 4 coated with the primer 6, and is a main body portion that exerts a heat insulating function in the heat insulating wall structure 2. As shown in FIG. 2, the heat insulating material 10 includes a heat insulating material 12 and a face material 14 laminated on the front surface 12a and the back surface 12b of the heat insulating material 12. The face material 14 may be only one of the front surface 12a and the back surface 12b, and the face material 14 may not be on both sides.

Examples of the heat insulating material 12 include phenol foam heat insulating material, bead method polystyrene foam heat insulating material, extruded polystyrene foam heat insulating material, rigid urethane foam heat insulating material, polyethylene foam heat insulating material, glass wool, rock wool, inorganic foam, and polypropylene foam. Examples thereof include a body, but the material is not particularly limited as long as it has appropriate heat insulating performance and suitable compressive strength and bending strength in accordance with the standards of JISA9521 or JISA9511 described below.

The compressive strength of the heat insulating material 12 measured in accordance with JIS A9521 ^{is preferably 10 N / cm 2} or more and 100 N / cm ² or less. When the compressive strength of the heat insulating material 12 is ^{less than 10 N / cm 2} , the heat insulating material 10 is applied to the primer 6 when the heat insulating material 10 is installed on the surface 6a of the primer 6 as described later in the method of constructing the heat insulating wall structure. When pressed against the surface 6a, the heat insulating material 10 may be dented or damaged. Further, when the compressive strength of ^{the heat insulating material 12 exceeds 100 N / cm 2} , the density of the heat insulating material 12 becomes remarkably high, so that the heat insulating material 12 itself becomes heavy, and the adhesive tape material 8 is used to connect the heat insulating material 10 and the wall surface 4a. It becomes difficult to keep the adhesive state.

Further, the bending strength of the heat insulating material 12 measured in accordance with JIS A9521 ^{is preferably 15 N / cm 2} or more and 200 N / cm ² or less. If the bending strength of the heat insulating material 12 ^{is less than 15 N / cm 2} , the heat insulating material 12 is likely to bend due to the pressure during construction when it is installed on the wall surface 4a. Further, if the bending strength of the heat insulating material 12 ^{exceeds 200 N / cm 2} , there is a risk that it will be difficult to carry out the construction in accordance with the unevenness and unevenness of the surface of the wall surface 4a.

As the material having the above-mentioned characteristics and preferable as the heat insulating material 12, it is preferable that the face material 14 described later is laminated on the surface of the heat insulating material 12, for example, a phenol resin foam obtained by foaming and curing a resol type phenol resin. Examples thereof include thermosetting resin foams such as rigid polyurethane resin foams obtained by foaming and curing polyisocyanate and polyol, and rigid polyisocyanurate resin foams. Among these, phenol resin foams have the lowest thermal conductivity. Therefore, it is preferable. By using the thermosetting resin foam as the heat insulating material 12, the thermal conductivity of the heat insulating material 10 is reduced, and the heat insulating performance of the heat insulating wall structure 2 is enhanced.

The face material 14 is provided to ensure the adhesiveness between the heat insulating material 12 constituting the so-called foam layer and the surface 6a of the primer 6. Examples of the face material 14 include papers containing cellulose fibers such as kraft paper, calcium carbonate paper, aluminum hydroxide paper, and glass fiber mixed paper, laminated papers thereof, glass fiber non-woven fabric containing glass fibers, and glass fiber woven fabric. , Polyester, polyethylene, polypropylene, synthetic fiber non-woven fabric containing nylon, and the like, but are not particularly limited as long as the adhesiveness between the heat insulating material 12 and the surface 6a of the primer 6 can be ensured as described above. The face material 14 is molded so that the face material 14 and the heat insulating material 12 are integrated by the adhesive force of the heat insulating material 12 itself without using an adhesive in the foam molding step of the heat insulating material 12. Further, the surface material 14 preferably has irregularities on the surface, and the surface material 14 itself may have irregularities such as a thermocompression bonding portion (so-called embossing) of a synthetic fiber non-woven fabric, and the surface of the heat insulating material 12 has irregularities. Is provided, and as a result of the face material 14 following the unevenness, the face material 14 may be provided with unevenness.

The face material 14 may be omitted if the heat insulating material 12 is made of a polystyrene-based resin or if the adhesiveness between the heat insulating material 12 and the surface 6a of the primer 6 can be ensured from the beginning.

As shown in FIGS. 1 and 2, a plurality of heat insulating materials 10 are installed so as to cover the wall surface 4a of the wall 4. The size of the heat insulating material 10 in the front view is preferably, for example, about 1820 mm in the vertical direction (vertical direction) × 910 mm in the horizontal direction (horizontal direction), but it may be adjusted appropriately. By installing a plurality of heat insulating materials 10, the handling, transportation, and management of each heat insulating material 10 can be smoothly performed.

The airtight tape material 20 is widely used in residential and architectural applications, and is particularly capable of sealing the seam G so that moisture on the indoor side does not enter the outdoor side through the seam G. Not limited.

The width of the airtight tape material 20 is preferably 40 mm or more and 200 mm or less along the direction orthogonal to the extending direction of the seam G with the seam G as the center. If the width of the airtight tape material 20 is less than 40 mm, moisture on the indoor side may infiltrate the outdoor side through the seam G, and the adhesiveness of the airtight tape material 20 to the heat insulating material 10 including the seam G is lowered. There is a problem that the heat insulating material 10 is easily peeled off from the surface 10a. Further, when the width of the airtight tape material 20 exceeds 200 mm, the adhesive surfaces of the airtight tape material 20 are too large, so that the adhesive surfaces of the airtight tape material 20 adhere to each other, and the heat insulating material 10 and the airtight tape material 20 There is a problem that a gap is likely to occur between the two.

Examples of the suitable airtight tape material 20 include airtight waterproof tape # 740 (manufacturer / distributor: Sekisui Chemical Co., Ltd.) and ace cloth (manufacturer / distributor: Koyo Chemical Co., Ltd.).

(Construction method of heat insulating wall structure)
Next, an embodiment of a method for constructing a heat insulating wall structure according to the present invention will be described. The method of constructing the heat insulating wall structure to which the present invention is applied is a primer coating step of applying the primer 6 to the wall surface 4a of the concrete wall 4, and installing the heat insulating material 10 on the surface 6a of the primer 6 via the adhesive tape material 8. After the heat insulating material installation step and the heat insulating material installation step, the airtight tape material installation step of installing the airtight tape material 20 so as to cover the joint G between the plurality of heat insulating materials 10 is included.

Before performing the primer coating step, as shown in FIG. 3A, the heat insulating material 10 provided with the adhesive tape material 8 in a non-intersecting state is provided on the outer peripheral portion 10r of the primer facing surface 10b and the inner portion 10n of the outer peripheral portion 10r. Prepare in advance. At this time, by arranging a release paper on the back surface 8b of the adhesive tape material 8, the back surface of the adhesive tape material 8 is pressed until immediately before the work of pressing the heat insulating material 10 against the front surface 6a of the primer 6 as described later. 8b is protected so that the adhesiveness of the back surface 8b does not decrease. When the above-mentioned adhesive tape provided with release paper on both sides is used as the adhesive tape material 8, the release film of the adhesive tape or the side on which the release paper is not provided is the outer peripheral portion of the primer facing surface 10b. It may be attached to 10r and the inner portion 10n of the outer peripheral portion 10r in a non-intersecting state, and the release film or release paper on the other side of the adhesive tape may be left.

First, the concrete wall 4 shown in FIG. 2 is installed at a predetermined position by a known method such as a PC method.

<Primer coating process>
The primer 6 is applied to the wall surface 4a on the indoor side of the wall 4. As the method of applying the primer 6, an appropriate method or a known method may be adopted in consideration of the type of the primer 6 and the like. After this, the primer 6 is sufficiently dried.

<Insulation material installation process>
Next, as shown in FIG. 4, the release film or release paper or the like arranged on the back surface 8b of the adhesive tape material 8 provided on the heat insulating material 10 is peeled off, and the back surface 8b of the adhesive tape material 8 is attached to the front surface 6a of the primer 6. The heat insulating material 10 is pressed against the primer 6 (along the direction of the arrow shown in FIG. 4) so as to bring it into contact with the predetermined position. The same operation is repeated, and a plurality of heat insulating materials 10 are placed on the surface 6a of the primer 6.

<Airtight tape material installation process>
Next, as described above, the airtight tape material 20 is installed so as to cover the joint G between the plurality of heat insulating materials 10.

By performing the above steps, the construction of the heat insulating wall structure 2 shown in FIGS. 1 and 2 is completed. After the construction of the heat insulating wall structure 2 is completed, an interior material or the like may be appropriately provided on the surface 10a of the heat insulating material 10 or the surface 20a of the airtight tape material 20, and an exterior material or the like may be appropriately provided on the wall surface 4b on the outdoor side of the wall 4. May be good.

In the heat insulating wall structure 2 of the present embodiment described above, since the heat insulating material 10 is installed on the smooth surface 6a of the primer 6 via the adhesive tape material 8, the non-landing material formed on the wall 4 and the heat insulating material 10 The wall 4 and the heat insulating material 10 are well adhered to each other via the primer 6 and the adhesive tape material 8. Therefore, since the curing period required for developing strength as in the case of using a conventional adhesive is shortened, the work efficiency at the time of constructing the heat insulating wall structure 2 is increased, and the construction cost is suppressed.

Further, in the heat insulating wall structure 2 of the present embodiment, since the adhesive tape material 8 is provided on the outer peripheral portion 10r and the inner portion 10n of the primer facing surface 10b of the heat insulating material 10 in a non-intersecting state, the adhesive tape materials 8 are provided with each other. The thickness of the adhesive tape material 8 installed on the primer facing surface 10b of the heat insulating material 10 becomes substantially uniform in the side view without overlapping. According to the heat insulating wall structure 2 of the present embodiment, the heat insulating material 10 is installed on the surface 6a of the primer 6 via the adhesive tape material 8, so that the surface 6a of the primer 6 and the primer facing surface 10b of the heat insulating material 10 The thickness interval between the two and the primer 6 becomes substantially uniform, and the adhesive tape material 8 can be reliably adhered to the primer 6 forming a smooth surface. As illustrated in FIG. 3B, in the conventional heat insulating material 100, the thickness of the intersection 8x intersects due to the existence of the intersection 8x where the adhesive tape material 8 (including the known adhesive) intersects. The thickness of the adhesive tape material 8 other than the portion 8x was larger than that of the adhesive tape material 8, and the adhesiveness was lowered due to the non-landing formed on the wall 4 and the heat insulating material 10.

Further, in the heat insulating wall structure 2 of the present embodiment, since a plurality of heat insulating materials 10 are installed and the joint G between the heat insulating materials 10 is covered with the airtight tape material 20, the humidity on the indoor side is between the heat insulating materials 10. Good heat insulation performance can be obtained without invading the outdoor side from the seam G.

Further, in the heat insulating wall structure 2 of the present embodiment, since the heat insulating material 10 is composed of the phenol resin foam, the thermal conductivity of the heat insulating material 10 is further reduced, and the heat insulating performance of the heat insulating wall structure 2 is surely enhanced. Be done. Therefore, the thickness and amount of the heat insulating material 10 can be suppressed, and the construction cost of the heat insulating wall structure 2 can be suppressed.

Further, according to the heat insulating material 10 of the present embodiment, since the adhesive tape material 8 is provided in advance on the outer peripheral portion 10r and the inner portion 10n of the primer facing surface 10b in a non-intersecting state, it can be carried to a construction site or constructed. Installation of the primer 6 on the surface 6a at the site is easily performed. The heat insulating material 10 increases the work efficiency at the time of construction of the heat insulating wall structure 2 and reduces the construction cost.

Further, according to the method of constructing the heat insulating wall structure of the present embodiment, in the primer coating step, a smooth surface can be formed on the surface 6a of the primer 6 by applying the primer 6 to the wall surface 4a of the wall 4. In the heat insulating material installation process, the heat insulating material 10 is installed on the surface 6a of the smoothed primer 6 via the adhesive tape material 8 to cope with the unevenness formed on the wall 4 and the heat insulating material 10. The heat insulating material 10 can be installed on the surface 6a of the primer 6 with good adhesiveness. As a result, the work efficiency at the time of construction of the heat insulating wall structure 2 can be improved, and the construction cost can be suppressed.

Further, according to the method of constructing the heat insulating wall structure of the present embodiment, since the adhesive tape materials 8 are arranged on the primer facing surface 10b of the heat insulating material 10 in a non-intersecting state, the surface 6a of the primer 6 and the primer of the heat insulating material 10 are arranged. The thickness interval between the facing surface 10b and the wall 4b is made substantially uniform, the adhesiveness between the wall 4 and the heat insulating material 10 is improved via the primer 6 and the adhesive tape material 8, and the non-landing formed on the wall 4 and the heat insulating material 10 is improved. The heat insulating wall structure 2 can be constructed by surely responding to the above.

Further, according to the construction method of the heat insulating wall structure of the present embodiment, by using a plurality of heat insulating materials 10 in the heat insulating material installation process, the wall surface 4a of the wall 4 in which the installation area of the heat insulating material 10 is relatively large Also, the installation area can be appropriately divided and the heat insulating material 10 can be installed according to each division. In addition, the heat insulating material 10 can be made into a size that is easy to carry and handle. Further, according to the method of constructing the heat insulating wall structure of the present embodiment, the seam G between the heat insulating materials 10 is sealed by the airtight tape material 20 by performing the airtight tape material installation step after the heat insulating material installation step, and the indoor side. Moisture can be prevented from entering the outdoor side from the seam G, and good heat insulating performance can be achieved.

Further, according to the method of constructing the heat insulating wall structure of the present embodiment, by using the heat insulating material 10 made of a thermosetting resin, the thermal conductivity of the heat insulating material 10 is reduced, and the heat insulating performance of the heat insulating wall structure 2 is reduced. Can be enhanced. Therefore, the thickness and amount of the heat insulating material 10 can be suppressed, and the construction cost can be suppressed.

Although the preferred embodiments of the present invention have been described in detail above, the present invention is not limited to the specific embodiments, and various aspects of the present invention are described within the scope of the claims. It can be transformed and changed.

For example, in the method for constructing a heat insulating wall structure according to the present invention, in the heat insulating material installation step, as shown in FIG. 5, a portion of the surface 6a of the primer 6 facing the outer peripheral portion 10r of the primer facing surface 10b of the heat insulating material 10. After the adhesive tape material 8 is provided on 6p, the heat insulating material 10 may be installed so that the primer facing surface 10b of the heat insulating material 10 is brought into contact with the surface 8a of the adhesive tape material 8. In other words, if the heat insulating material 10 can be installed on the surface 6a of the primer 6 via the adhesive tape material 8, the adhesive tape material 8 may be provided on the surface 6a of the primer 6 and the primer facing surface of the heat insulating material 10. It may be provided at 10b.

If there is a margin in the work space and process of the construction site, the work of providing the adhesive tape material 8 on the primer facing surface 10b of the heat insulating material 10 may be performed in the heat insulating material installation process described later. Further, the adhesive tape material 8 may be provided on the primer facing surface 10b of the heat insulating material 10 within the time for drying the primer 6 applied to the wall surface 4a of the wall 4.

Further, in the method of constructing the heat insulating wall structure and the heat insulating wall structure 2 according to the present invention, if the adhesiveness between the primer 6 and the heat insulating material 10 can be sufficiently ensured, the adhesive tape material 8 is used as the primer facing surface of the heat insulating material 10. It may be installed only on the outer peripheral portion 10r of 10b, or may not be installed on the inner portion 10n.

Further, in the method of constructing the heat insulating wall structure and the heat insulating wall structure 2 according to the present invention, it is not always necessary to use a plurality of heat insulating materials 10, and a single heat insulating material 10 may be used. When a single heat insulating material 10 is used, or when an adhesive or the like is arranged at the seams G of the plurality of heat insulating materials 10, the airtight tape material 20 and the airtight tape material installation step can be omitted.

Further, in the method of constructing the heat insulating wall structure and the heat insulating wall structure 2 according to the present invention, various members and building materials may be provided on the indoor side and the outdoor side of the heat insulating wall structure 2. For example, as shown in FIG. 6, a steel base 32 called a stud is provided on the surface 20a of the airtight tape material 20 (that is, the indoor side of the heat insulating wall structure 2), and the gypsum board 34 is provided on the surface 32a of the steel base 32. May be provided. Further, as shown in the figure, the exterior material 40 may be provided on the wall surface 4b of the wall 4 (that is, the outdoor side of the heat insulating wall structure 2). In FIG. 6, the heat insulating material 12 and the face material 14 in the heat insulating material 10 are not shown, and these are collectively shown as the heat insulating material 10.

Further, in the method of constructing the heat insulating wall structure and the heat insulating wall structure 2 according to the present invention, as shown in FIG. 7, the adhesive tape material 8 and the heat insulating material 10 are partially added in consideration of the shape of the wall 4 and the like. You may. In the example shown in FIG. 7, the adhesive material 8 and the heat insulating material 10B are provided on the surface 10a of the heat insulating material 10A at the portion along the vertical direction and the step portion of the wall 4. In FIG. 7, the heat insulating material 12 and the face material 14 in the heat insulating material 10 are not shown, and these are collectively shown as the heat insulating material 10, and the airtight tape material 20 is not shown.

Further, in the method of constructing the heat insulating wall structure and the heat insulating wall structure 2 according to the present invention, if the wall surface 4a of the wall 4 has a protruding portion by a fixture such as a screw, the heat insulating wall structure 2 is provided to the vicinity of the front view of the protruding portion. It may be constructed, and then a new heat insulating wall structure 2 may be constructed from the indoor side so as to cover the protruding portion. (That is, the heat insulating wall structure 2 according to the present invention may be constructed in the same manner as the heat insulating plate 1 shown in FIG. 3 of Patent Document 1.)

For example, as shown in FIG. 8, in the building, in addition to the wall 4A provided along the vertical direction, the mounting member 42 fixed to the wall surface 4a (that is, the indoor side surface) of the wall 4A with a screw 43. Alternatively, if necessary, a wall 4B (that is, a floor or a ceiling) connected to the wall 4A via a mounting member 41 or the like and along the horizontal direction may be installed. In such a configuration, since fine protrusions are formed on the surfaces 41a, 42a, 43a of the mounting members 41, 42 and the screws 43, urethane-based materials are foamed on the surfaces 41a, 42a, 43a as in the conventional case. The urethane foam-based heat insulating portion U may be provided by direct spraying, and the primer 6, the adhesive tape material 8, and the heat insulating material 10 according to the present invention may be provided on the smooth wall surface 4a of the walls 4A and 4B. In FIG. 8, the heat insulating material 12 and the face material 14 in the heat insulating material 10 are not shown, and these are collectively shown as the heat insulating material 10, and the airtight tape material 20 is not shown.

2 ... Insulated wall structure, 4 ... Wall, 4a ... Wall surface (one wall surface), 6 ... Primer, 6a ... Surface, 8 ... Adhesive tape material, 10 ... Insulation material, 10b ... Primer facing surface (facing the primer in the heat insulating material) Surface), 20 ... Airtight tape, G ... Seam

Claims (9)

A primer application process that applies a primer to one of the concrete walls,
A rectangular heat insulating material with a compressive strength of 10 N / cm ² or more and 100 N / cm ² or less and a bending strength of 15 N / cm ² or more and 200 N / cm ² or less on the surface of the primer via an adhesive tape material. Insulation material installation process to install the material and
Have a,
In the heat insulating material installation step, the adhesive tape material is provided on the outer peripheral portion of the surface of the heat insulating material facing the primer in a non-intersecting state and is provided in a non-intersecting state so as to hang between the long sides of the outer peripheral portion. Later, a method for constructing a heat insulating wall structure, characterized in that the heat insulating material is provided on the surface of the primer without using an adhesive. A primer application process that applies a primer to one of the concrete walls,
A rectangular heat insulating ^{material with a compressive strength of 10 N / cm 2} or more and 100 N / cm ² or less and a bending strength of 15 N / cm ² or more and 200 N / cm ² or less on the surface of the primer via an adhesive tape material. Insulation material installation process to install the material and
Have,
In the heat insulating material installation step, the adhesive tape material is provided on the surface of the primer in a non-intersecting state on a portion of the surface of the primer facing the outer peripheral portion of the surface arranged to face the primer, and the long side of the outer peripheral portion. A method for constructing a heat insulating wall structure, which comprises providing the heat insulating material on the surface of the primer in a non-intersecting state so as to hang between them without using an adhesive. In the heat insulating material installation step, a plurality of the heat insulating materials are installed on the surface of the primer, and the heat insulating material is installed.
The construction of the heat insulating wall structure according to claim 1 or 2 , wherein after the heat insulating material installation step, the airtight tape material is installed so as to cover the seams between the plurality of heat insulating materials. Method. The method for constructing a heat insulating wall structure according to any one of claims 1 to 3 , wherein a thermosetting resin foam is used as the heat insulating material in the heat insulating material installation step. With concrete walls
A primer applied rectangularly to one of the walls,
An adhesive tape material that is arranged in a non-intersecting state on the outer peripheral portion of the surface of the primer and is arranged in a non-intersecting state so as to hang between the long sides of the outer peripheral portion.
The compressive strength placed on the surface of the adhesive tape material without using an adhesive is 10 N / cm ² or more and 100 N / cm ² or less, and the bending strength is 15 N / cm ² or more and 200 N / cm ² or less. With rectangular insulation,
Insulated wall structure characterized by having. The adhesive tape material is characterized in that it is provided on the outer peripheral portion of the surface of the heat insulating material facing the primer in a non-intersecting state and is provided in a non-intersecting state so as to hang between the long sides of the outer peripheral portion. The heat insulating wall structure according to claim 5. A plurality of the heat insulating materials are installed,
The heat insulating wall structure according to claim 5 or 6 , further comprising an airtight tape material that covers the seams between the plurality of the heat insulating materials. The heat insulating wall structure according to any one of claims 5 to 7 , wherein the heat insulating material is a thermosetting resin foam. The compressive strength for installation on one wall of a concrete wall coated with a primer without using an adhesive is 10 N / cm ² or more and 100 N / cm ² or less, and bending. A rectangular insulation with a strength of 15 N / cm ² or more and 200 N / cm ^{2 or less.}
A heat insulating material having an adhesive tape material provided on the outer peripheral portion of a surface facing the primer in a non-intersecting state and provided in a non-intersecting state so as to span between the long sides of the outer peripheral portion.

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