JP3272090B2 - Insulated exposed waterproof material and its scroll - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a heat-insulated exposed waterproof material.

[0002]

2. Description of the Related Art Conventionally, in order to perform heat-insulating exposure and waterproofing, at least three steps such as bonding of a heat-insulating material to a vehicle body, application of a first-layer waterproof material, and then application of a second-layer waterproof material are performed. Requires a great deal of time and effort, and the greater the number of processes, the higher the probability of occurrence of work errors. In addition, the construction industry, which has a 3K problem recently, is suffering from chronic labor shortage, but is required to shorten the construction period.

[0003]

Therefore, the present invention is not to laminate two or three layers of waterproofing material layers on a heat insulating material layer in order, but to make these thermal insulating and waterproofing works prefabricated. Insulation materials are used in advance at the factory production line,
By providing a waterproof laminate efficiently, we aim to provide a new heat-insulating and waterproofing laminate that aims to save time and labor at the construction site and improve the quality of the heat-insulating and waterproofing work. It is one purpose. A second object of the present invention is to provide a prefabricated heat-insulated exposed waterproof material in which the thickness of the entire laminated structure is smaller than that of the conventional asphalt waterproof layer and the weight is reduced. Furthermore, the present invention
It is an object of the present invention to provide a novel heat-insulating waterproof laminate capable of achieving space saving during storage and transportation of products.

[0004]

According to a first aspect of the present invention, in a heat-insulated exposed waterproof material in which a heat-insulating material layer, an adhesive layer and an asphalt-based laminated waterproof layer are sequentially laminated, the heat-insulating material layer is parallel from an end face parallel to a longitudinal direction. Only a very small area forms a notch, while the asphalt-based laminated waterproof layer has only its surface layer parallel to an end face parallel to the notch and the longitudinal direction opposite to the notch. The present invention relates to a heat-insulated exposed waterproof material, wherein a cutout portion having the same width as the cutout portion is formed, and a release layer is provided in the cutout portion of the surface layer. Second embodiment of the present invention
The present invention relates to the heat-insulating and exposed waterproof material according to claim 1, wherein a fluororesin layer is provided on the asphalt-based laminated waterproof layer. The third aspect of the present invention relates to the heat-insulating and exposed waterproof material according to claim 2, wherein the asphalt-based laminated waterproof layer comprises a modified asphalt layer, a base material, and a modified asphalt layer. A fourth aspect of the present invention is that, in the heat insulating material layer, a very small portion is formed in parallel from an end face parallel to the longitudinal direction, while the notched portion is formed in the fluororesin layer. The notch in parallel from the opposite end surface parallel to the longitudinal direction,
3. The heat-insulated and exposed waterproof material according to claim 2, wherein a cutout portion having the same width is formed, and a release layer is provided in the cutout portion of the fluorine resin layer. A fifth aspect of the present invention relates to the heat-insulated exposed waterproof material according to any one of claims 1 to 4, wherein only the heat-insulating material layer has a portion cut at a right angle to the longitudinal direction. A sixth aspect of the present invention is a structure in which the adhesive layer includes a portion where the adhesive is present and a portion where the adhesive is not present, and all the portions where the adhesive is not present communicate with the outside. The heat-insulating exposed waterproof material according to any one of claims 1 to 5, wherein
A seventh aspect of the present invention relates to a heat insulating exposed waterproof material roll which is wound by folding the heat insulating exposed waterproof material according to any one of claims 1 to 6 at a cutting position of the heat insulating material layer.

[0005] The asphalt-based laminated waterproof layer in the present invention is formed by arbitrarily laminating an asphalt layer, a substrate, an asphalt layer, a substrate, and an asphalt layer in this order from the adhesive layer side. 2
Asphalt roofing (asphalt / substrate / asphalt) of up to about 5 layers or 1-2
A fluororesin layer is formed on the asphalt roofing layer. As the asphalt, straight asphalt, blown asphalt or modified asphalt is used, but modified asphalt modified with a modifying agent such as SBS, atactic polypropylene, or SBR is preferable in terms of durability. When the outermost layer of the asphalt-based laminated waterproof layer is a fluororesin layer, the number of asphalt layers in the asphalt-based laminated waterproof layer can be reduced, thereby reducing the thickness of the laminated body and reducing the overall weight. can do. In particular, when the asphalt used is modified asphalt, the asphalt-based laminated waterproof layer has a laminated constitution of a modified asphalt layer, a base material, a modified asphalt layer, and a fluororesin layer, i.e., a modified asphalt roofing and a fluororesin layer. A layer configuration is sufficient.

[0006] fluororesin is meant so-called fluorine-containing resin, as a representative and vinyl fluoride resin PVF (-CH ₂ -CHF-), vinylidene fluoride resin PVDF (-CH ₂ -CF ₂ - ), Ethylene-
Tetrafluoroethylene resin, chlorotrifluoroethylene resin PCTFE (-CF ₂ -CFCl-), ethylene - chlorotrifluoroethylene resin ECTFE, perfluoroalkoxy resin PFA (CF ₂ CF ₂ and ROCFCF ₂
And R is perfluoroalkyl), perfluoroethylene propylene resin (CF ₂ CF ₂ and CF ₃ CF)
Copolymers with CF ₂ ), tetrafluoroethylene resin, and the like, and PVF, PVDF, and CTFE are preferred, and PVF is particularly preferred. Further, it is preferable that the adhesive surface of the fluororesin film has been subjected to an adhesive property modification treatment.

[0007] The heat insulating material used in the present invention is not particularly limited, but for the purpose of cutting the heat insulating material layer, a foam of synthetic resin, natural or synthetic rubber,
Particularly, closed cells are preferred. The most typical one is a polyurethane closed cell. The thickness of the heat insulating material layer is usually 20 to 40 mm, and a considerable effect can be obtained. When a foam made of synthetic resin, natural or synthetic rubber is used as the heat insulating material, the bonding strength between the heat insulating material and the adhesive layer is increased. It is preferable to provide a fibrous sheet impregnated with a high material such as a glass sheet layer or a synthetic resin film such as a polypropylene or polyester film. It is particularly preferable to form the laminate at the same time as the foam molding. When using a modified asphalt for the adhesive, it is preferable to use a glass fiber sheet impregnated with the modified asphalt. However, as long as the adhesive constituting the adhesive layer can achieve the original purpose of bonding the heat insulating material layer and the waterproof layer, it is needless to say that there is no restriction on the type of the adhesive. Also, the adhesive may be applied uniformly over the entire surface, but if gas may leak out of the foam, the portion where the adhesive is not applied is connected to the outside so that a gas escape path can be secured. It is preferable to apply the adhesive in a simple design, for example, in a stripe shape. One example is shown in FIG. This can prevent gas from accumulating between the heat insulating material layer and the waterproof layer, thereby preventing blisters from being generated in the waterproof layer.

The asphalt layer may be provided with a plastic layer having an affinity for both the asphalt and the fluororesin in order to complete the adhesion of the fluororesin layer. It is preferable that the resin constituting the plastic layer is mainly composed of an acrylic resin. As the acrylic resin, in addition to methyl methacrylate homopolymer, methyl methacrylate is used as a main component (for example, 90 wt.
% Or more). Examples of the copolymerization component include alkyl methacrylate (alkyl is a C 1-4), alkyl acrylate (alkyl is the same alkyl as before), methacrylic acid, acrylic acid, methacrylonitrile, acrylonitrile, styrene, α-methylstyrene, and the like. . In addition to acrylic resin, urethane-based synthetic resins are also preferable materials. The asphalt layer in contact with the plastic layer may be asphalt itself, but may be SBS, atactic polypropylene,
Modified asphalt modified with a modifier such as BR is preferred. In particular, it is preferable to use a modified asphalt further mixed with an acrylic resin in order to increase affinity with a resin constituting the plastic layer, for example, an acrylic resin.

Although fluororesin has excellent weather resistance,
Since ultraviolet rays pass through, the asphalt layer is degraded, and easily peels off from the interface with the asphalt. Therefore, it is preferable to blend an ultraviolet absorber or a dark colorant in a layer outside the asphalt layer. The use of a dark colorant is preferable because the ultraviolet absorber alone is insufficient. Although there is no particular limitation on the dark colorant, carbon black is preferred because it has the most ultraviolet blocking effect. UV inhibitors and dark colorants are used for the outer layer of the asphalt layer, but the appearance of the waterproof sheet is preferred to be bright, so the dark colorant should be added to the plastic layer rather than the fluororesin layer. Is preferred. Instead of adding a dark colorant to the plastic layer to block ultraviolet rays, a black ink layer may be provided between the plastic layer and the fluororesin layer or between the plastic layer and the asphalt layer. In the former case, it is particularly required that the plastic layer has the same properties as the black ink layer. The plastic layer is provided for adhesion between the fluororesin layer and the asphalt layer, but in order to further ensure the adhesion, it is preferable to interpose a fiber layer between the plastics layer and the asphalt layer. . In this case, the fiber layer is impregnated with both the plastic component and the asphalt component, and the adhesive strength is further improved. As the substrate in the present invention,
Any form, such as cloth, nonwoven fabric, and film, can be used, and natural materials and synthetic resins can be used as the material. As the release layer in the present invention, a release paper is usually used, but there is no limitation as long as the layer can be smoothly released from the asphalt layer.

In the present invention, when cutting the heat insulating material layer
Is determined when the paper is folded at the cutting location to form a scroll
Depending on the winding method and the cross-sectional shape of the scroll.
Is decided. The first means is to set the initial cutting width to L₀age,
When the thickness of the heat-insulated exposed waterproof material is D, the cut point is L₀, L₀, L₀  L₀+ D, L₀+ DL₀+ 2D, L₀+ 2D L₀+ 3D, L₀+ 3D L₀+ 4D, L₀+ 4D · · · · L₀+ ND, L₀+ ND. FIG.
The dotted line in the figure shows the cut point of the heat insulating material layer.
The width of the cut point is L from the left end.₀,
L₀, L₀, L₀+ D, L₀+ D, L₀+ 2D, L₀+2
D. . . It has become. FIG. 5B is a cross-sectional view thereof.
1, 1 is a heat insulating material layer, 2 is an adhesive, and 3 is a waterproof layer.
(C) of FIG. 5 shows the structure in (a) and (b).
Wrapped with the exposed heat-insulating waterproof material of the present invention
FIG. Scrolls are prismatic and can be stored
And no extra space between scrolls during transport
It is advantageous.

A second method of providing a cutting portion is for forming a prism shown in FIG. The dimensions of the cutting point _{is, L 0, L 0, D} L 0, 2D, L 0 + D 3D, L 0 + 2D 4D, L 0 + 3D · · · · nD, L 0 + (n-1) so that D Disconnect. The third method of providing the cutting portions is for forming the columnar body shown in FIG. In this case, the cutting locations may be equally spaced. A fourth way of providing the cutting points is for forming a foldable structure as shown in FIG. The space 15 is separately filled with a heat insulating material layer or filled with foam by in-situ foaming. Since there are various other ways of providing the cutting locations, the way of providing the cutting locations in the present invention is not limited to these.

[0012]

【Example】

Example 1 Asphalt impregnating a base material, asphalt roofing obtained by forming an asphalt layer on the upper and lower sides thereof were laminated on a heat insulating material layer via an asphalt adhesive layer,
Further, an asphalt roofing was laminated thereon, and an asphalt roofing having a finished surface was further laminated thereon via an asphalt adhesive layer to obtain a heat-insulated exposed waterproof material. A cut portion was formed in the heat insulating material layer in any of the manners shown in FIGS. 5 to 7 and wound as shown in FIG. 5C, FIG. 6C, or FIG. 7C to form a roll.

Example 2 A heat insulating material layer 1 was formed by integrally molding a modified asphalt-impregnated glass fiber sheet above and below a polyurethane closed cell (thickness: 25 mm). On the other hand, the asphalt-based laminated waterproof layer
The modified asphalt layer 11, the base material layer 12, the modified asphalt layer 13, and the back surface are subjected to an adhesion improving treatment of 38 μm.
A thick laminate made of a thick Tedlar film (PVF film) manufactured by DuPont was used. The adhesion between the asphalt-based laminated waterproof layer 3 and the heat insulating material layer 1 is performed using a modified asphalt, and the adhesive layer 2 made of the modified asphalt is formed as shown in FIG.
4A and 4B are applied to the pattern shown in FIG.
The laminated structure shown in FIG. The means for forming the adhesive layer 5 is not limited to this. When the asphalt-based laminated waterproof layer is formed in advance, the self-adhesive adhesive layer 2 may be formed on the asphalt-based laminated waterproof layer side. . This is the preferred method because the finish is the cleanest. Also, a torch method in which a part of the asphalt layer is melted by a torch to form the adhesive layer 2 can be used. This was provided with a cut portion only in the heat insulating material layer in the manner shown in each of (a) and (b) of FIGS. 5 to 7, and wound as shown in (c) of FIGS.

[0014]

[Effect] According to the present invention, prefabrication of insulation and waterproofing work can be achieved. As a result, since the heat insulating material layer and the waterproof layer are laminated on the production line of the factory, the quality is good, the quality is not uneven, and the production efficiency is high. Since the product is prefabricated, the handling of molten asphalt at the construction site has been drastically reduced, so that the number of odors generated on the site and dirty work have been drastically reduced. In addition, by devising the cutting point of the heat insulating material layer, the efficiency of storing or transporting the prefabricated exposed heat insulating and waterproofing material as a scroll could be greatly increased. Also, by using a fluororesin layer as the outermost layer of the asphalt-based laminated waterproof layer, a modified asphalt roofing layer (modified asphalt / substrate / modified asphalt) can be formed without stacking a plurality of asphalt roofing layers as in the related art. One layer can sufficiently achieve the purpose of waterproofing. For this reason, the thickness of the heat-insulating exposed waterproof material is reduced, and the prefabrication effect of the present invention is further improved.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view showing one specific example of a laminated structure of a central portion in a heat-insulated exposed waterproof material according to the present invention.

FIG. 2 is a perspective view showing a specific example of the first embodiment of the present invention.

FIG. 3 is a partial cross-sectional view showing one specific example of the invention of claim 2;

FIG. 4 is a perspective view showing a specific example of the invention according to claim 4;

FIGS. 5A and 5B are views showing a cut portion of the heat insulating material layer, a winding method, and an example of the obtained scroll; FIG.
(B) is a sectional view, and (c) is a sectional view of a scroll.

FIGS. 6A and 6B are views showing a cut portion of the heat insulating material layer, a winding method, and another example of the obtained scroll; FIG.
(B) is a sectional view, and (c) is a sectional view of a scroll.

FIGS. 7A and 7B are views showing a cut portion of the heat insulating material layer, a winding method, and another example of the obtained scroll; FIG.
(B) is a sectional view, and (c) is a sectional view of a scroll.

FIG. 8 is a diagram showing another example of a cut portion of the heat insulating material layer, a winding method, and an obtained scroll, (a) is a plan view,
(B) is a sectional view, and (c) is a sectional view of a scroll.

Continuation of the front page (72) Inventor Takashi Ito 1-31 Kodai, Adachi-ku, Tokyo Inside Tajima Roofing Co., Ltd. (56) References JP-A-53-27227 (JP, A) JP-A-56-100880 (JP, A) JP-A-3-190730 (JP, A) JP-A-55-45968 (JP, A) JP-A-2-49421 (JP, U) JP-A-4-2215 (JP, Y1) ( 58) Fields surveyed (Int. Cl. ⁷ , DB name) E04D 5/00-12/00

Claims (7)

(57) [Claims] 1. A heat-insulated exposed waterproof material in which a heat-insulating material layer, an adhesive layer and an asphalt-based laminated waterproof layer are sequentially laminated, wherein the heat-insulating material layer is very partially parallel to an end face parallel to the longitudinal direction. Area forms a notch, while the asphalt-based laminated waterproof layer has the same surface layer as the notch in which only the surface layer is parallel from the end face parallel to the long side opposite to the notch. A heat insulating and exposed waterproof material, wherein a cutout portion having a width is formed, and a release layer is provided in the cutout portion of the surface layer. 2. The heat-insulated and exposed waterproof material according to claim 1, wherein a fluororesin layer is provided on the asphalt-based laminated waterproof layer. 3. The heat-insulated and exposed waterproof material according to claim 2, wherein the asphalt-based laminated waterproof layer comprises a modified asphalt layer, a base material, and a modified asphalt layer. 4. In the heat insulating material layer, a very small part is formed in parallel with an end face parallel to the longitudinal direction,
On the other hand, in the fluororesin layer, a cutout portion having the same width as the cutout portion is formed in parallel with an end face parallel to the longitudinal direction opposite to the cutout portion. 3. The heat-insulated and exposed waterproof material according to claim 2, wherein a release layer is provided in the notched portion. 5. The heat-insulated and exposed waterproof material according to claim 1, wherein only the heat-insulating material layer has a portion cut at a right angle to the longitudinal direction. 6. The adhesive layer has a structure in which the adhesive is present and a position in which the adhesive is not present, and all the positions where the adhesive is not present communicate with the outside. A heat-insulating and exposed waterproof material according to claim 1. 7. A heat insulation exposed waterproof material roll wound by folding the heat insulation exposed waterproof material according to any one of claims 1 to 6 at a cutting position of the heat insulation material layer.