JP3925574B2 - Tarpaulin - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
In the present invention, when roof materials (eg, tiles and slate) and wall materials (eg, mortar) are constructed, the waterproof property of the building is maintained by interposing between the roof materials and wall materials and the base plate. It is related with the waterproof sheet for.
[0002]
[Prior art]
Conventionally, as a waterproof sheet for general housing, asphalt felt with paper asphalt or pitch impregnated is used as the core, and asphalt mixed with filler on both sides is applied, and mineral powder such as talc and silica sand is used to prevent adhesion Asphalt roofing with grains all over the surface was often used.
[0003]
This asphalt roofing exhibits particularly high performance in terms of water resistance and durability because the asphalt itself has excellent hydrophobicity and high decay resistance.
[0004]
[Problems to be solved by the invention]
However, since the asphalt roofing is made by impregnating paper with asphalt, etc., the core material lacks mechanical strength and low-temperature characteristics, and is blown by a strong wind during or after construction on the surface of the base plate. When an external force is applied, it may be torn or become brittle in winter, and the bent portion is likely to crack, and there is a risk of water leakage from the cracked portion.
[0005]
Further, since the core material is paper, it absorbs water and absorbs moisture, resulting in poor dimensional stability, and undulations easily occur. In addition, since the core material is paper and rigid, for example, when used as a waterproof sheet for walls, the waviness cannot be suppressed with a lath net or the like, and the surface becomes uneven, resulting in thin variations in the mortar thickness. This caused cracks.
[0006]
The present invention is intended to solve the above-described problems, and an object thereof is to provide a novel waterproof sheet that is excellent in mechanical strength and low-temperature characteristics, does not absorb water, has excellent dimensional stability, and does not cause undulations. It is said.
[0007]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention is provided by interposing a waterproof / adhesive layer made of asphalt which can be oozed out from the nonwoven fabric between the two front and back synthetic fiber nonwoven fabrics so as to exude the synthetic fabric. as the anti-tack material to at least one surface of the asphalt exuded to the surface of the nonwoven fabric becomes by applying the paint, the thickness of the intermediate asphalt can be formed to a desired thickness, folding endurance at low temperatures, nails The hole sealability is improved and the dimensional stability is high, so that no wavy phenomenon can occur.
[0008]
The invention according to claim 2 is characterized in that the paint is white and contains a large amount of filler, and is designed to improve design and prevent blocking during storage. ing.
[0009]
The present invention as described in claim 3, wherein the waterproof and adhesive layer, the surface of the synthetic fiber nonwoven fabric is characterized covered it so as not to be exposed, to enhance the staple holding force, and synthesized walking surface The fiber non-woven fabric is not exposed so that it can be prevented from being fluttered during walking.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, embodiments of the present invention will be described with reference to the accompanying drawings. The sheet 1 of the present application is formed by interposing a waterproof / adhesive layer 3 made of asphalt mixed with 1 to 15% of styrene-butadiene-styrene block copolymer between two front and back synthetic fiber nonwoven fabrics 2 and 2.
[0011]
In the sheet 1 of the present application, the reason why the synthetic fiber nonwoven fabric is made into two layers is that (1) the two layers are strengthened and the dimensional stability can be improved. (2) The front and back two layers are strengthened, and the staple holding power is enhanced. (3) The front and back two layers are moderately stiffened and workability is improved. (4) Since the nonwoven fabric is used for the two layers of the front and back surfaces, it is possible to absorb the unevenness of the texture of the nonwoven fabric itself and to reduce the total weight.
[0012]
Wherein the synthetic fiber nonwoven fabric 2 of the surface, causing oozing the interposed waterproofing and adhesive layer 3 of the asphalt. As an anti-adhesive material, paint 4 is applied to at least one surface. If a white paint is used as the coating material 4 to be applied, the design is improved, and if a paint containing a large amount of filler is used, it is effective for preventing blocking during storage.
[0013]
The reason for applying at least one of the two front and back synthetic fiber nonwoven fabrics as the surface on which the coating material 4 is applied is that the sheet 1 of the present application is usually wound in a cylindrical shape during storage or distribution. Therefore, when it is necessary to store or distribute the sheet 1 without involving the application sheet 1, the paint 4 may be applied as an anti-adhesive material on both sides.
[0014]
The reason why the asphalt is interposed (sandwich) as the waterproof and adhesive layer 3 between the two front and back synthetic fiber nonwoven fabrics 2 and 2 is that the intermediate asphalt layer thickness can be formed to a desired thickness. This is because, due to the effect of the thickness, not only the folding resistance at a low temperature but also the nail hole sealing property can be further improved.
[0015]
The basis weight of the two synthetic fiber nonwoven fabrics 2 on the front and back sides of the sheet 1 may be 10 to 100 g / m ² . Examples of the material fiber include plastic fibers such as vinylon and polyester.
[0016]
The waterproof / adhesive layer 5 is made of asphalt itself, and the base asphalt may be straight asphalt or blown asphalt. Moreover, it is free to mix a filler such as talc and slaked lime as needed in the base asphalt.
[0017]
When the asphalt mixed with 1-15% styrene-butadiene-styrene block copolymer (SBS) is used as the waterproof / adhesive layer 5, the waterproof / adhesive layer 5 is excellent in improving brittleness at low temperature and sagging at high temperature, and at low temperature. Folding resistance and mechanical strength at high temperatures are greatly improved, and nail hole sealability is also greatly improved.
[0018]
Here, the SBS content is set to “1-15%”. If it is “less than 1%”, the low temperature folding resistance and the mechanical strength at high temperature will not be improved. Does not increase. On the other hand, "over 15%" increases the cost and cannot be put to practical use.
[0019]
The synthesis is fiber nonwoven fabric second surface, Ru to form asphalt layer 5 by actively bleeding out the asphalt to form the waterproof and adhesive layer 3. That is, the asphalt layer 5 oozed out to the lower surface side prevents slippage due to stickiness with the base plate and substantially improves the staple holding force, while the asphalt layer 5 oozed out to the upper surface side is on the walking surface. There is an advantage that the synthetic fiber nonwoven fabric is prevented from being exposed and can be prevented from being fluttered during walking.
[0020]
The basis weight of the exuded asphalt layer 5 should not exceed 200% of the basis weight of the nonwoven fabric 2 on the front and back sides. That is, when the thickness exceeds 200%, in the sheet 1 of the present application, the reason why the synthetic fiber nonwoven fabric 2 is formed into two layers is obscure.
[0021]
In order to prevent the asphalt layer 5 that has oozed out on the surface of the synthetic fiber nonwoven fabric 2, the paint 4 is applied to at least one surface. As the coating material 4 to be applied, a white paint may be used as described above, or a paint containing a large amount of filler may be used.
[0022]
The present application sheet 1 has a total thickness of 0.2 to 2 synthetic fiber nonwoven fabrics 2 and 2, a waterproof and adhesive layer (asphalt containing SBS) 3 interposed therebetween, and a paint 4. It is preferably about 1.2 mm. Of course, this is not a limiting factor.
[0023]
[Example 1]
Commercial 22kg asphalt roofing (the conventional product) was cut into 1 m ² large, interposed to those pegs on the upper surface of the plywood 12mm thick the four corners, between the front and back sheets of synthetic fiber non-woven fabric, asphalt Then, the sheet of this application (Claim 1) having a total thickness of 1 mm is cut into 1 m ² large pieces, and four corners thereof are nailed to the upper surface of the same base plate, and the rainfall amount is 12 mm / After 24 hours of sprinkling equivalent to (time), the presence or absence of water leakage and dimensional changes were observed. As a result, slack was noticeable in the conventional product and water leaked from the nail hole. There was no water leak.
[0024]
[Example 2]
Using the rubberized asphalt mixed with 10% SBS for the waterproof and adhesive layer of the present product shown in Example 1, the sheet of the present application (Claim 2) having the other structure in common is cut into 1 m ² , and its four corners When the corners were nailed to the upper surface of the same base plate as described above, water spraying equivalent to a rainfall of 12 mm / (hour) was applied for 24 hours, and the presence or absence of water leakage and dimensional change were observed. There was no change such as slack, and no water leakage was observed.
[0025]
[Example 3]
When a conventional product that is 22 kg asphalt roofing and a sheet of the present application shown in Example 1 and Example 2 are wound around a 5 mmφ mandrel at a speed of 180 ° / 2 seconds, the temperature at which cracks do not occur is 5 ° C apart. As a result of measurement, the limit temperature of the conventional product was + 10 ° C., the limit temperature of the application sheet (Claim 1) was 0 ° C., and the limit temperature of the application sheet (Claim 2) was −5 ° C.
[0026]
【The invention's effect】
As mentioned above has been described, the present invention is between front and back two synthetic fibrous nonwoven fabric, interposed to exude a waterproof and adhesive layer made of the asphalt be seep from the nonwoven fabric, the synthetic fiber nonwoven fabric since as a preventing at least one surface of the exuded on the surface asphalt adhesive is characterized by the application of the paint, can form a layer thickness of the intermediate asphalt to the desired thickness, thus, resistance at low temperatures It has excellent effects in that it can provide a waterproof sheet that has improved foldability, nail hole sealing performance, and high dimensional stability, and that does not cause undulation.
[0027]
Moreover, since the invention according to claim 2 is characterized in that the paint is white and contains a large amount of filler, it is possible to improve design and prevent blocking during storage. It plays.
[0028]
Further, an invention according to claim 3, wherein the waterproof and adhesive layer, because it is characterized in that covered so as not to expose the surface of the synthetic fiber nonwoven fabric, to enhance the staple holding force, and the walking surface In addition, the synthetic fiber nonwoven fabric is not exposed, and an excellent effect can be achieved in that it is possible to prevent a sag during walking.
[Brief description of the drawings]
FIG. 1 is an external perspective view of a sheet of the present application.
FIG. 2 is an enlarged cross-sectional view of a main part of the sheet of the present application.
FIG. 3 is an enlarged cross-sectional view of a main part in a state where an asphalt surface layer is formed on the surface of a synthetic fiber nonwoven fabric of the sheet of the present application.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Application sheet 2 Synthetic fiber nonwoven fabric 3 Waterproof and adhesive layer 4 Paint 5 Asphalt layer that exudes

Claims (3)

Between the two front and back synthetic fiber nonwoven fabrics, a waterproof and adhesive layer made of asphalt that can be oozed out of the nonwoven fabric is interposed so as to ooze out, and at least the asphalt oozed out on the surface of the synthetic fiber nonwoven fabric on one surface as an anti-tack material waterproof sheet, characterized in that the application of the paint. The waterproof sheet according to claim 1, wherein the paint is white and contains a large amount of filler . The waterproof sheet according to claim 1 or 2, wherein the waterproof and adhesive layer covers the surface of the synthetic fiber nonwoven fabric so as not to be exposed .

Images