JPH1077690A - Adhesive building material sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an adhesive building material sheet which is used for preventing dew condensation inside a wall of a building and is adhered and fixed to various structural materials constituting the wall to improve workability. SOLUTION: An adhesive building material sheet, wherein an adhesive portion is formed on at least one surface of a building material sheet used for a building. In particular, the moisture-permeable waterproof sheet 4 is formed by laminating a porous film 9 and a gas-permeable net-like structure 10, and an adhesive 11 is applied to the surface of the net-like structure 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adhesive building material sheet having excellent strength and workability, which is used as a moisture-permeable waterproof sheet and a moisture-proof sheet in a wall of a building such as a house.

[0002]

2. Description of the Related Art In recent years, in buildings such as wooden houses,
The airtightness of the inside of the building and the inside of the structure has been increasing, and the occurrence of dew condensation in the wall has been a serious problem. The air in the room contains a large amount of water vapor, and when the air flows into the wall, the water vapor in the wall is condensed into water due to a temperature difference between the room and the outside. This water wets a heat insulating material such as glass wool having a high water absorption, and reduces the heat insulating effect. As the amount of condensation increases, the moisture will travel down the fibers of the insulation and wet the structural and interior materials,
It causes the decay of the building. Therefore, when designing and constructing heat insulation, how to prevent the occurrence of dew condensation is an important issue. However, only the hermetic sealing method using high heat insulation and high airtightness causes the building to decay by infiltrating moisture. Therefore, as a solution to this problem, a ventilation layer method having a ventilation layer is generally used at present. In the ventilation layer method, in order to ensure heat insulation, keep the inside as airtight as possible, and still release moisture that has passed through the moisture barrier to the outside, and to make the structural material exposed to the outside air, A ventilation layer is provided between the material. However, when a material that does not allow moisture to escape even when the ventilation layer is provided, that is, a material having high moisture permeability, condensed water is confined in the wall. Therefore, a moisture-permeable waterproof sheet is used so as to prevent rainwater or the like from entering the inside of the wall, ceiling, floor, or the like, and to discharge indoor moisture to the outside. For example, taking a wooden house as an example, the wall has a structure in which an interior material, a moisture-proof sheet, a heat-insulating material, a moisture-permeable waterproof sheet, a ventilation layer, and an outer layer material are sequentially provided from the indoor side. Various types of moisture-permeable waterproof sheets are used, and a typical example is a structure in which a nonwoven fabric or a porous film spun by flash is reinforced with a reinforcing material. In addition, a moisture-impermeable polyethylene film or the like is used as the moisture-proof sheet.

[0003] In the construction of a moisture-permeable waterproof sheet and a moisture-proof sheet, a sheet or film usually wound in a roll shape is used.
While pulling so that it cannot be sagged or loosened,
A method of fixing to columns, studs, and the like with staples (tuckers) or the like is used. In the construction of the moisture-permeable waterproof sheet,
By nailing the vertical waist edge to the pillars and studs from above on the moisture-permeable waterproof sheet stopped by a tucker or the like, the air-permeable layer is formed while further pressing down from above. However,
The moisture-permeable waterproof sheet faces the outside while being fixed only by the tucker until it is sufficiently pressed by the vertical trunk edge. Fixation by such a tucker,
It is limited to pillars and studs only, and it is not fixed in the middle because it is not fixed, and the tucker needle may fall off due to the influence of wind etc. until it is sufficiently held down by the vertical trunk edge Sometimes. In addition, when a slack occurs between the fixing points or when the moisture-permeable waterproof sheet or the moisture-proof sheet itself is weak, the tucker needle used for the fixing easily breaks the sheet. Furthermore, the construction method of fixing with a tucker while pulling not only has a poor working efficiency, but also adversely affects the surrounding area due to noise.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned drawbacks of the prior art, and has been used as a building material sheet such as a moisture-permeable waterproof sheet and a moisture-proof sheet for preventing dew condensation in a wall. The workability is improved by being adhesively fixed to various structural materials such as studs and heat insulating material constituting the wall at the time of construction, and the dew condensation prevention performance is exhibited without impairing the moisture permeability especially in the case of the moisture-permeable waterproof sheet. It is an object of the present invention to provide an excellent adhesive building material sheet that can be used.

[0005]

Means for Solving the Problems As a result of intensive studies conducted by the present inventor to achieve the above-mentioned objects, the present inventors have found that various types of building material sheets used as a moisture-permeable waterproof sheet and a moisture-proof sheet can be used as an adhesive during construction. The present inventors have found that the above object can be achieved by bonding and fixing according to the present invention, and have completed the present invention. That is, the first aspect of the present invention relates to an adhesive building material sheet characterized in that an adhesive portion is formed on at least one surface of a building material sheet used for a building. A second aspect of the present invention relates to an adhesive building material sheet, wherein the building material sheet is a moisture-permeable waterproof sheet, and the adhesive portion is partially formed on at least one surface of the moisture-permeable waterproof sheet. A third aspect of the present invention is characterized in that the moisture-permeable waterproof sheet is formed by laminating a porous film and a gas-permeable net-like structure, and the adhesive portion is formed on the surface of the net-like structure. The present invention relates to an adhesive building material sheet. A fourth aspect of the present invention is characterized in that the moisture-permeable waterproof sheet has a single-layer structure, and the adhesive portion is formed on at least one side of the moisture-permeable waterproof sheet in a mesh, lattice, streak or dot shape. The present invention relates to an adhesive building material sheet.
Furthermore, a fifth aspect of the present invention relates to an adhesive building material sheet, wherein the building material sheet is a moisture-proof sheet, and the adhesive portion is formed on at least one surface of the moisture-proof sheet.

[0006] The adhesive building material sheet of the present invention is prepared by applying a pressure-sensitive adhesive to the adhesive surface of the sheet in advance, stacking a release paper thereon, and peeling off the release paper at the time of construction to remove the base, pillars, studs and heat insulating material. It is pressed directly onto the structural material and adhesively fixed. When the adhesive building material sheet of the present invention is a moisture-permeable waterproof sheet, it is important not to impair the air permeability.
In a moisture-permeable waterproof sheet formed by laminating a porous film and a gas-permeable net-like structure, an adhesive is applied only to the surface on the net-like structure side. Since the network structure itself has gaps, there is no concern that air permeability is impaired unless an adhesive is attached to the porous film side. Cloths, woven fabrics, non-woven fabrics, and the like are used as the net-like structure having air permeability. When a single-layer sheet having both moisture permeability and waterproof performance is used as the moisture-permeable waterproof sheet, the adhesive is mesh-shaped in order not to impair the permeability of the moisture-permeable waterproof sheet.
Partial application such as lattice, streak, point, etc. The application form is not particularly limited as long as the air permeability is not lost. When the adhesive building material sheet of the present invention is a moisture-proof sheet,
It is not necessary to consider the air permeability, and the adhesive may be applied in any application form. In addition, the strength of the moisture-proof sheet can be improved by reinforcing it with a reinforcing material such as the mesh structure.

As the pressure-sensitive adhesive, a pressure-sensitive adhesive having a strong adhesive force usually used for construction can be used.
The type thereof is not particularly limited, but is preferably one that is resistant to moisture, adapts well to the unevenness of the surface of the bonding surface such as pillars and studs, and can express high initial adhesive strength by enclosing dust and the like attached to the surface.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a partially enlarged perspective view showing an example in which the adhesive building material sheet of the present invention is used for a house wall surface. The walls are, in order from the indoor side, interior material 1 / moisture proof sheet 2
It has a structure in which a heat insulating material 3 / a moisture-permeable waterproof sheet 4 / a ventilation layer 5 (space) / exterior 6 is provided. Usually, a mat-like material such as glass wool is used as the heat insulating material 3, and a material made of a ceramic material such as mortar is used as the exterior material 6. The adhesive building material sheet of the present invention is adhesively fixed to various structures with an adhesive. In the case of the moisture-permeable waterproof sheet 4, after being bonded and fixed to the studs 7 and the heat insulating material 3, the ventilation layer 5 is formed at the same time as being pressed by the vertical trunk edge 8. Conventionally, only the studs 7 are fixed to the studs 7 by a tucker or the like. Therefore, the intermediate portion between the studs 7 is not fixed until the studs 7 are pressed by the vertical trunk edge 8. However, in the moisture-permeable waterproof sheet bonded and fixed by the pressure-sensitive adhesive of the present invention, not only the stud 7 but also the heat insulating material 3 is fixed. As shown in the figure, when the adhesive building material sheet of the present invention is used as a moisture-permeable waterproof sheet 4, it is attached to a mat-like heat insulating material 3 such as glass wool embedded in a house wall. Although the moisture-permeable waterproof sheet 4 constructed as described above hardly allows water droplets to pass through, it has moisture permeability, so that the water vapor inside the room that has flowed into the wall body can be effectively passed to the outside ventilation layer 5.
Therefore, water vapor does not remain in the wall, and dew condensation is prevented.

FIG. 2 is a partial sectional view showing an example of the moisture-permeable waterproof sheet 4 coated with the pressure-sensitive adhesive of the present invention. The moisture-permeable waterproof sheet 4 is formed by laminating a breathable net structure 10 made of a thermoplastic resin as a reinforcing material on at least one surface of the porous film 9.
The adhesive 11 is applied to the entire surface of the network structure 10 on the side of the network structure 10. Since the network structure 10 has a gas-permeable network structure, the pressure-sensitive adhesive 11 is used for the network structure 1.
Even if it is applied to the entire surface of the No. 0, its air permeability is not hindered. In the adhesive building material sheet of the present invention, the adhesive 11 is applied to the adhesive surface of the sheet in advance, and the release paper 1
2 is brought to the construction site in a state of being superposed, and the release paper 12 is peeled off at the time of construction and is adhered and fixed to various structural materials.

The porous film 9 is obtained, for example, by melt-molding a resin composition obtained by blending a particulate filler with a polyolefin resin to form an unstretched sheet, and then stretching the sheet. First, a polyolefin-based resin, a particulate filler and, if necessary, additives such as a plasticizer, are uniformly mixed using a commonly used mixer to form a resin composition,
After forming this into a pellet-shaped resin mixture, it is melt-molded into an unstretched sheet, and stretched by a usual inflation molding method or T-die extrusion molding method. Stretching is
One stage or two or more stages may be used, but the area magnification is preferably 1.2 to 8 times. In the porous film 9 thus obtained, fine pores having each particle of the particulate filler as a nucleus are formed over the entire surface of the film by a stretching treatment, and the fine pores allow gas such as water vapor to permeate. Exhibit the property of preventing the penetration of water in the form of droplets, and exhibit moisture permeability and waterproofness. 500 permeability
The porous film 9 having a gH ₂ O / m ² of 24 hours or more is suitable because when the net-like structure 10 is laminated as a reinforcing material to form the moisture-permeable waterproof sheet 4, water vapor can be satisfactorily transmitted therethrough. In addition, it is preferable that the water pressure resistance is 500 mmH ₂ O or more, since good water resistance is exhibited.

The permeable net-like structure 10 laminated on the porous film 9 is not particularly limited as long as it is a permeable reinforcing material. For example, (1) the following (a):
(B) a nonwoven fabric or woven fabric made of a thermoplastic resin obtained by laminating or weaving at least one kind of uniaxially oriented material selected from (c) so that the orientation axes intersect, or (2) the following (a) ) And (b) are used. (A) Vertically uniaxially oriented reticulated film (b) Horizontally uniaxially oriented reticulated film (c) Uniaxially oriented tape

[0012] The (a) longitudinally uniaxially oriented reticulated film made of the above thermoplastic resin may be a single-layer film made of a single thermoplastic resin, but is preferably provided on one or both surfaces of the first thermoplastic resin layer. Using a multilayer film in which a second thermoplastic resin layer having a lower melting point than the first thermoplastic resin is laminated, uniaxially stretching or uniaxially rolling the single layer or multilayer film in the longitudinal direction (film forming direction), and stretching. Or it is split or slit in the longitudinal direction before and / or after rolling. FIG. 3 is a partially enlarged perspective view of an example of (a) a longitudinally uniaxially oriented reticulated film. In the figure, a longitudinally uniaxially oriented reticulated film 13 is formed by laminating a second thermoplastic resin layer 15 on both surfaces of a first thermoplastic resin layer 14 to form a three-layer film, and stretching or rolling and longitudinal splitting treatment. It was done. In the figure, 16 is a trunk fiber, 17
Is a branch fiber.

[0013] The (b) transverse uniaxially oriented reticulated film made of a thermoplastic resin may be a single-layer film made of a single thermoplastic resin, but is preferably one or both surfaces of the first thermoplastic resin layer. Using a multilayer film in which a second thermoplastic resin layer having a lower melting point than the first thermoplastic resin is laminated, and uniaxially stretching or uniaxially stretching the single layer or the multilayer film in a lateral direction (a direction perpendicular to the film forming direction). Rolled, and before and / or after stretching or rolling, horizontal slits are formed by, for example, a hot blade. FIG. 4 is a partially enlarged perspective view of an example of the horizontal uniaxially oriented reticulated film (b). In the figure, the horizontal uniaxially oriented reticulated film 18 also has a three-layer structure in which a second thermoplastic resin layer 15 is laminated on both surfaces of a first thermoplastic resin layer 14.

Next, the uniaxially oriented tape (c) made of a thermoplastic resin may be a film of the thermoplastic resin alone, but preferably, the first thermoplastic resin layer is provided on one or both surfaces thereof with the first thermoplastic resin. Using a multilayer film in which a second thermoplastic resin layer having a lower melting point than the plastic resin is laminated, the single-layer or multilayer film is cut, and before and / or after the cutting, is uniaxially oriented by stretching or rolling. FIG. 5 is a partially enlarged perspective view of an example of the (c) uniaxially oriented tape. The uniaxially oriented tape 19 is also obtained by laminating the second thermoplastic resin layer 15 on both surfaces of the first thermoplastic resin layer 14 to form a three-layer film, and performing stretching and cutting in the same manner as described above.

FIG. 6 is a partial plan view of (a) a nonwoven fabric 20 in which longitudinally uniaxially oriented reticulated films 13a and 13b are laminated, and FIG. 7 (c) is a nonwoven fabric 21 in which two sets of uniaxially oriented tapes 19 are laminated. FIG. 8 is a partial perspective view of a woven fabric 22 in which the uniaxially oriented tape 19 is woven.
In addition, as a specific example of the nonwoven fabric 20 shown in FIG. 6, "Nisseki Warif" (trade name, manufactured by Nisseki Plast Co., Ltd.) can be mentioned.

An adhesive may be used for bonding the porous film 9 and the air-permeable net-like structure 10, or thermocompression bonding may be performed without using an adhesive. Regardless of the method of laminating by any of the bonding methods, since the moisture permeability of the porous film is lost in the bonding portion, the bonding to the entire area of the moisture permeable waterproof sheet 4 is performed as long as the desired bonding strength is secured. It is preferable that the area ratio is as small as possible. As the moisture-permeable waterproof sheet 4, the porous film 9
Can be laminated on one side or both sides of the porous film 9. However, if the network structure 10 as a reinforcing material is laminated on only one side of the porous film 9, sufficient strength can be obtained.

When applying the moisture-permeable waterproof sheet 4 of the present invention,
As described above, as the adhesive applied to the surface of the mesh structure 10 of the moisture-permeable waterproof sheet 4 for bonding and fixing to the studs 7 and the heat insulating material 3, as described above, it is possible to use those usually used for construction. is there. Although not particularly limited, a material that has sufficient adhesive strength to adhere and fix the moisture-permeable waterproof sheet 4 to a building structure and can exhibit waterproofness is preferable. For example, pressure-sensitive adhesives such as rubber asphalt, synthetic resin, and non-vulcanized natural or synthetic rubber can be used.
From the viewpoint of durability, a non-vulcanized butyl rubber-based pressure-sensitive adhesive is preferred.

As a method for applying the pressure-sensitive adhesive to the building material sheet, a known method such as spray coating, a roll coater or a flow coater is used. When the building material sheet is a moisture-permeable waterproof sheet, it is preferable to use an application method in which the degree of loss of air permeability of the adhesive portion due to application of the adhesive is small.
In the case of applying a pressure-sensitive adhesive to the surface of the nonwoven fabric 20 which is to be bonded to the building structure in the moisture permeable waterproof sheet 4 reinforced with the nonwoven fabric 20, the two layers constituting the nonwoven fabric 20 are formed into a vertically uniaxially oriented network. The adhesive may be applied only to the surface of one of the films 13a and 13b, or may be applied to the exposed surface of the other film 13b at the same time.

As another example of the reticulated structure 10, a long-fiber nonwoven fabric spun from a thermoplastic resin can be used.
When a long-fiber nonwoven fabric is used as a reinforcing material, a stretched one is usually used. For example, an undrawn long-fiber nonwoven fabric is stretched in one direction, and a stretched unidirectionally arranged nonwoven fabric consisting of at least one layer in which fibers of the nonwoven fabric are arranged in almost one direction, or laminated so that their arrangement axes intersect. A stretched nonwoven fabric made of any of the stretched cross-laminated nonwoven fabrics is used.

As a means for spinning the long-fiber non-woven fabric spun from the thermoplastic resin, a conventional spinning apparatus such as a melt blow die type or a spun bond nozzle type can be used. A one-way arrangement spinning type) or a spinning means (fluid rectification method) disclosed in JP-A-2-2699859 can also be used. The point that the above-mentioned spinning means is fundamentally different from the conventional spunbond type spinning is that the spinning means is heated positively by infrared heating or hot air immediately after spinning from the nozzle, or is taken up by using hot air as air for air sucker. For example, it is intended to actively control the molecular direction of the fiber at the time of spinning while taking the fiber.

The above-mentioned stretched unidirectionally arranged nonwoven fabric is a nonwoven fabric in which a long-fiber nonwoven fabric is stretched in one direction as described above and the long fibers are arranged in one direction as a whole. Substantially molecular orientation has occurred. As the stretching means, there can be used a longitudinal stretching means, a transverse stretching means and a biaxial stretching means used for stretching a conventional film or nonwoven fabric, and various types such as those shown in JP-B-3-36948 can be used. Stretching means can also be used.

The stretched unidirectionally aligned nonwoven fabric can be used alone or
Although more than one layer can be used by laminating without intersecting the arrangement axis, it is often used in the form of a stretched cross-laminated nonwoven fabric in which two or more layers are intersected. Many are orthogonal nonwoven fabrics in which vertical and horizontal arrangement layers are laminated and bonded, but if the fiber arrangement axes are crossed and laminated,
There is no particular limitation.

In the moisture-permeable waterproof sheet 4 using the long-fiber nonwoven fabric as the mesh structure 10 as described above, if an adhesive is applied to the entire surface, the air permeability is lost. Therefore, in this case, the adhesive is applied to the adhesive surface of the moisture-permeable waterproof sheet 4 in a lattice, mesh, streak or dot shape. The adhesive may be applied only to the surface of the fiber, and the adhesive may be applied to the entire surface as long as the gap between the fibers is not lost.

The long-fiber nonwoven fabric described above can be used as the moisture-permeable waterproof sheet 4 in a single-layer structure without being laminated with the porous film 9. In this case, the long-fiber nonwoven fabric may be unstretched, but is preferably stretched in view of strength and cost.

In addition to the long-fiber nonwoven fabric, the moisture-permeable waterproof sheet 4 used in the single-layer structure includes a nonwoven fabric obtained by thermocompression bonding three-dimensional mesh fibers of asphalt-impregnated paper, asphalt-impregnated wood fiber board, and high-density polyethylene. Tyvek "
(Trade name, manufactured by Du Pont).

FIG. 9 shows a structure in which a sticky portion 23 is provided on the bonding surface of the moisture-permeable waterproof sheet 4 having a single-layer structure in a dotted manner, and
3 shows a state in which it is bonded and fixed to the heat insulating material 3.
It is necessary to consider the arrangement interval of the adhesive portions 23 so that the air permeability is not lost and the adhesive portions are fixed.

As the moisture-proof sheet 2, a single-layer non-permeable film may be used. However, the net-like structure 10 is laminated with the non-permeable film, and the moisture-proof sheet 2 reinforced by the net-like structure 10 is used. Can also be used. In this case, it is not necessary to consider the air permeability, and the adhesive may be applied only to the surface of the reticulated structure 10 as described above, or the adhesive may be applied to the surface of the moisture-impermeable film. Good. Also,
After laminating the network structure 10 and the moisture-impermeable film, an adhesive is applied from above the network structure 10, and the adhesive is applied to the moisture-impermeable film exposed from the surface of the network structure 10 and the gap between the network structures. It may be applied.

[0028]

The adhesive building material sheet of the present invention, which is used as a moisture-permeable waterproof sheet and a moisture-proof sheet for preventing dew condensation in the walls of buildings such as houses, can be used for various kinds of materials such as wood and heat insulating materials constituting the walls. Since it is bonded and fixed to the structural material, workability during construction is improved. Further, in the case of a moisture-permeable waterproof sheet, since it is bonded and fixed to various structural materials without losing moisture permeability, dew condensation in the wall can be efficiently prevented.

[Brief description of the drawings]

FIG. 1 is a partially enlarged perspective view showing an example in which an adhesive building material sheet of the present invention is used in a house wall.

FIG. 2 is a partial sectional view showing an example of a moisture-permeable waterproof sheet.

FIG. 3 is a partially enlarged perspective view of an example of a longitudinally uniaxially oriented reticulated film.

FIG. 4 is a partially enlarged perspective view of an example of a horizontal uniaxially oriented reticulated film.

FIG. 5 is a partially enlarged perspective view of an example of a uniaxially oriented tape.

FIG. 6 is a partial plan view of an example of a nonwoven fabric.

FIG. 7 is a partial plan view of another example of the nonwoven fabric.

FIG. 8 is a partial perspective view of an example of a woven fabric.

FIG. 9 is a perspective view showing a state in which a sticky portion is provided in a dot shape on a moisture-permeable waterproof sheet having a single-layer structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Interior material 2 Moisture-proof sheet 3 Insulation material 4 Moisture-permeable waterproof sheet 5 Vent layer 6 Exterior material 7 Stud 8 Vertical waist 9 Porous film 10 Net-like structure 11 Adhesive 12 Release paper 13, 13a, 13b Vertical uniaxial orientation net-like Film 14 First thermoplastic resin layer 15 Second thermoplastic resin layer 16 Trunk fiber 17 Branch fiber 18 Horizontal uniaxially oriented reticulated film 19 Uniaxially oriented tape 20, 21 Nonwoven fabric 22 Woven fabric 23 Adhesive part

Claims (5)

[Claims] 1. An adhesive building material sheet, wherein an adhesive portion is formed on at least one surface of a building material sheet used for a building. 2. The adhesive building material sheet according to claim 1, wherein the building material sheet is a moisture-permeable waterproof sheet, and the adhesive portion is partially formed on at least one surface of the moisture-permeable waterproof sheet. . 3. The moisture-permeable and waterproof sheet is formed by laminating a porous film and a gas-permeable net-like structure, and the adhesive portion is formed on a surface of the net-like structure. 3. The adhesive building material sheet according to 2. 4. The moisture-permeable waterproof sheet has a single-layer structure, and at least one surface of the moisture-permeable waterproof sheet has a mesh shape.
The adhesive building material sheet according to claim 2, wherein the adhesive portion is formed in a lattice, streak, or dot shape. 5. The adhesive building material sheet according to claim 1, wherein the building material sheet is a moisture-proof sheet, and the adhesive portion is formed on at least one surface of the moisture-proof sheet.