JPH08135104A - Waterproof sheet for roof with repeated pattern and manufacture thereof - Google Patents

Abstract

PURPOSE: To obtain the excellent waterpoof characteristic and the workability by forming the repeated pattern on the surface of polymer modified asphalt, sand and minerals of a water-proof sheet formed of a basic fabric layer, which includes polymer modified asphalt, and polymer modified asphalt layer provided in both surfaces of this basic fabric layer. CONSTITUTION: A waterproof sheet 1 is formed of three layers of a polymer modified asphalt 2, which includes atactic polypropylene, a polyester nonwoven fabric 3, and a polymer modified asphalt 2, which includes atactic polypropylene. The black surface of this water-proof sheet 1 is coated with the masking material of polyethylene sheet, which is formed with holes of repeated pattern, and the exposed surface of the black surface is coated with the adhesive agent. Surface protecting material 4, which is colored with the color different from the color of the surface of the polymer modified asphalt, minerals or sand layers, is adhered to the surface coated with the adhesive agent. Consequently, the water-proof sheet for roof with the excellent design can be obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roofing sheet with a repetitive pattern and a method for producing the same. More specifically, the present invention relates to a waterproof sheet for a roof with a repeating pattern which is excellent in waterproofness, workability and designability and has no material loss during construction, and a method for producing the same.

[0002]

2. Description of the Related Art Conventional materials for pitched roofs include ancient Japanese clay roof tiles, concrete roof tiles, asbestos cement boards, corrugated asbestos slate, and metal roofs. In addition to these, asphalt singles and non-combustible singles, which have the advantages of being lightweight, rich in flexibility, easy to construct even in complicated places, and excellent in designability, are becoming popular in recent years.

[0003]

However, in this single, as shown in FIG. 7, the size of one sheet is, for example, about 3 vertically.
Since it is as small as 0 cm and approximately 90 cm in width, it takes a long time to build a large area. Since the material alone cannot be expected to have a complete waterproof function, the underlaying material and the underlaying process are required. As shown in FIG. 8, there is a problem that a material having an area about twice as large as the construction area is required in order to overlap about half at the time of construction.

[0004]

DISCLOSURE OF THE INVENTION The present invention provides a long roof tarpaulin having excellent waterproofness, workability, and designability and having a repetitive pattern with no loss of material during construction, and a suitable manufacturing method thereof. I will provide a.

That is, the first invention of the present application is: (1) A waterproof sheet comprising a layer of base fabric impregnated with polymer-modified asphalt and a layer of polymer-modified asphalt sandwiching the layer of base fabric up and down. Or a tarpaulin having a layer of sand or mineral particles on the layer of polymer-modified asphalt, which is a roof tarpaulin having a repeating pattern on the surface of the layer of polymer-modified asphalt or sand or mineral particles. .

Here, the polymer-modified asphalt is
Asphalt modified with atactic polypropylene or styrene butadiene rubber, or modified asphalt obtained by blending polyethylene or the like with these, and the modified asphalt further contains additives such as an inorganic filler and sulfur as required. be able to.

The base cloth impregnated with the polymer-modified asphalt is a glass fiber cloth or a polyester non-woven cloth impregnated with the polymer-modified asphalt, and the glass fiber cloth or the polyester non-woven cloth is usually The waterproof sheet is formed as a core material by being sandwiched between upper and lower layers of polymer-modified asphalt.

The repetitive pattern is a pattern in which the smallest unit that gives a beautiful appearance to the roof is about 5 cm to 50 cm, and the plane of the roof waterproof sheet having the typical repetitive pattern of the present application is shown in FIGS. 1 to 3. Is.

This repeating pattern can be produced by printing, painting, embossing, and adhering surface protective materials of plural colors. When making a repeating pattern by printing, it is possible to use a printing method such as letterpress, planographic printing, intaglio printing, and copy printing, but for uneven surfaces due to sand or mineral particles, flexographic printing, which is a type of copy printing or letterpress printing, is used. It is suitable.

In the case of painting, spraying or brush painting can be considered, but when a large amount of complicated pattern is to be applied, a method of spraying after masking is preferable. When a sheet having a layer of sand or mineral particles is printed or painted to give a pattern, ink or paint is used, respectively, but it is preferable that the ink or paint also serves as adhesion of sand or mineral particles.

The repetitive pattern can be produced by embossing by continuously pressing the metal roll having a predetermined pattern of irregularities on the waterproof sheet while heating. In this case, as shown in FIG. 10, the surface protection material of the convex portion of the metal roll heated at the time of pressing is buried in the polymer-modified asphalt, and the polymer-modified asphalt is exposed, resulting in a repeated pattern. It is made.

The roof waterproof sheet having a repeating pattern which is the first invention of the present application can be suitably manufactured by the following method which is the second invention of the present application.

The second invention of the present application is (2) covering the surface of a layer of polymer-modified asphalt composition or sand or mineral particles with a sheet-like masking material having holes, and applying an adhesive to the exposed surface. , Adhere a polymer-modified asphalt composition or surface protection material colored in a color different from that of the surface of the layer of sand or mineral particles to the surface coated with the adhesive, and remove the perforated sheet-like masking material The method for manufacturing a roof waterproof sheet according to (1) above, which comprises the steps of:

Further, the preferable manufacturing method of the above (2) is (3) the manufacturing method described in the above (2) in which the adhesive is an epoxy adhesive, and (4) the above in which the surface protective material is a slate chip. (2)
The manufacturing method described in 1.

The perforated sheet-like masking is preferably manufactured by using a polyethylene sheet or a polypropylene sheet which can be easily removed even if an adhesive is attached. Epoxy adhesives with less curing shrinkage are preferred because the sheets are less likely to be squeezed and deformed. Among them, those that form a transparent film such as the product names 1500 and 1565 manufactured by Cemedine Co., Ltd. have a beautiful appearance. Especially preferred above.
The surface protection material has a thickness of 0.5 to 2 mm and a diameter of 3 to
Scale-like slate chips having a size of about 7 mm are preferable because a large adhesive area per piece can be obtained and the surface can be efficiently covered.

If the device of the manufacturing method of the second invention of the present application is incorporated into a part of the waterproof sheet production line, for example, a width of about 1 m,
It is possible to efficiently and repeatedly design a large-scale waterproof sheet having a length of several tens of meters. In order to store or transport such a waterproof sheet, it is necessary to wind it up into a roll, but as shown in FIG. 4, the repeated pattern surface is placed inside to reduce damage to the repeated pattern surface. Further, when a synthetic resin sheet such as polyethylene is laminated on the inside or outside of the roll-up surface, or on both sides, the repeating pattern is preferably protected.

In the construction of the waterproof sheet for a roof with a repeating pattern, the waterproof sheet and the base are directly burned and heat-welded to the concrete roof with a burner. When fire cannot be used because the base is wood, etc., glue or nail. By arranging the long direction of the waterproof sheet in the direction of the slope of the roof, meandering of the waterproof sheet can be prevented and workability is improved. The waterproof sheet for a roof with a repeated pattern can be applied to a so-called external thermal insulation method in which a waterproof layer is applied after fixing a heat insulating material on a base.

[0018]

【Example】

Example 1 A waterproof sheet made of three layers of polymer-modified asphalt containing atactic polypropylene, polyester non-woven fabric and polymer-modified asphalt containing atactic polypropylene was used, and the black surface was made of polyethylene sheet with perforated patterns. Then, the exposed surface of the black surface was coated with an epoxy adhesive.

A white scale-like slate chip having a thickness of about 1 mm and a diameter of about 5 mm was used as a surface protective material, and this surface protective material was adhered to the exposed surface of the surface coated with the epoxy adhesive. Next, the sheet-like masking material with holes was removed, and a roof waterproof sheet having a width of 1 m and a length of 10 m having a white repeating pattern on the black polymer-modified asphalt layer was produced. This roof tarpaulin has an area of 30
Construction was carried out by heat welding on a concrete sloping roof base made of concrete with 0 m ² and a slope of 1/10. Table 1 shows the number of people required for construction, the number of days, and the amount of materials.

Example 2 The same black surface of the waterproof sheet as in Example 1 was covered with a masking material made of polyethylene sheet having holes with repeated patterns, and an epoxy adhesive was applied to the exposed surface of the black surface. . A white scale-like slate chip having a thickness of about 1 mm and a diameter of about 5 mm was used as a surface protection material, and this surface protection material was adhered to the exposed surface of the surface coated with the epoxy adhesive.

Then, the perforated sheet-shaped masking material was removed. Furthermore, the surface where the black polymer-modified asphalt layer is exposed is coated with a red spray-type acrylic paint, and the red polymer-modified asphalt layer and the white repeating pattern have a width of 1 m and a length. A 10 m roof waterproof sheet was prepared. This tarpaulin for roof,
Construction was performed by heat welding on a concrete sloping roof substrate with an area of 300 m ² and a slope of 1/10. Number of people required for construction, number of days,
The amount of material is shown in Table 1.

Comparative Example As shown in FIG. 8, an underlaying material was applied to a concrete sloping roof substrate having an area of 300 m ² and an inclination of 1/10, and then the conventional asphalt single shown in FIG. 7 was attached with an adhesive material.
Table 1 shows the number of people required for construction, the number of days, and the amount of materials.

[0023]

[Table 1]

[0024]

The roof waterproof sheet according to the first invention of the present application is excellent in waterproofness and workability, has no material loss during construction, and is excellent in design. The second invention of the present application is a waterproof, excellent in workability, there is no loss of material during construction, and a waterproofing sheet for roof, which is also excellent in designability, can be manufactured in large quantities and easily, and is complicated. Such a repeating pattern can be manufactured.

[Brief description of drawings]

FIG. 1 is a plan view showing an example of a repeating pattern.

FIG. 2 is a plan view showing an example of a repeating pattern.

FIG. 3 is a plan view showing an example of a repeating pattern.

FIG. 4 is a perspective view in which a part of a roof waterproof sheet having a repeating pattern showing one embodiment of the present invention is expanded.

FIG. 5 is a plan view of a roof waterproof sheet having a repeating pattern that represents an embodiment of the present invention.

FIG. 6 is a cross-sectional view of a roof waterproof sheet having a repeating pattern that represents an embodiment of the present invention.

FIG. 7 is an example of the shape and size of a single material.

FIG. 8 is a perspective view of a construction example of a single material.

FIG. 9 shows an example of producing a repeating pattern by embossing.

FIG. 10 shows an example of producing a repeating pattern by embossing.

[Explanation of symbols]

 1 Roof tarpaulin with repeating pattern 2 Polymer modified asphalt 3 Base cloth impregnated with polymer modified asphalt 4 Surface protection material 5 Single material 6 Underlaying material

Claims (4)

[Claims] 1. A waterproof sheet comprising a layer of a base fabric impregnated with a polymer-modified asphalt and a layer of the polymer-modified asphalt sandwiching the layer of the base fabric up and down, or on the layer of the polymer-modified asphalt. A tarpaulin having a layer of sand or mineral particles on a roof, which has a repeating pattern on the surface of a layer of polymer-modified asphalt or sand or mineral particles. 2. The surface of the layer of polymer-modified asphalt or sand or mineral particles is covered with (1) a sheet-like masking material having holes, (2) an adhesive is applied to the exposed surface, (3) The surface coated with the adhesive is bonded with a surface protective material colored in a color different from the surface color of the layer of polymer-modified asphalt or sand or mineral particles, and (4) the sheet-shaped masking material with holes is removed. The method for manufacturing a roof waterproofing sheet according to claim 1, comprising the steps of: 3. The method according to claim 2, wherein the adhesive is an epoxy adhesive. 4. The manufacturing method according to claim 2, wherein the surface protection material is a slate chip.