JP3126853B2 - Polymer modified asphalt roofing and its manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a modified asphalt roofing for a torch method and a method for producing the same.

[0002]

2. Description of the Related Art As a means for installing asphalt roofing on a lower ground such as a roof, there is a torch method, and the outline of the torch method is as shown in FIGS. The polymer-modified asphalt roofing used in this method usually has a sectional structure shown in FIG. In the figure, 1 is a sand or mineral powder, 2 and 4 are polymer-modified asphalt, 3 is a fibrous reinforcing layer, and 5 is a fusible film. The reason for the existence of the fusible film of No. 5 is that this type of roofing material is usually wound up in a roll and transported,
During storage and storage, modified asphalt, which is exposed to direct sunlight and exhibits little tackiness at room temperature, becomes tacky and prevents it from sticking to one layer of sand particles etc. To do that. The torch method using the polymer-modified asphalt roofing is usually performed as follows. That is, as shown in FIGS. 1 and 2, the back surface and the base surface of the rolled sheet of the polymer-modified asphalt roofing are heated to 1100 to 1300 ° C. by a burner flame, and the back surface of the sheet is sufficiently melted, and the asphalt Confirm that a bank (pool) has been formed and 5-1 from the side lap
It was important to work with molten asphalt flowing about 0 mm.

[0003]

In the conventional torch method, it is necessary to melt the polymer-modified asphalt to the above-mentioned state, so that the working speed is at most about 1-2 m / min. Therefore, an object of the present invention is to provide a novel asphalt roofing that can be constructed only by mild heating and melting, thereby greatly increasing the construction speed, and a method for producing the same.

[0004]

According to the present invention, there is provided a modified torch method comprising a surface layer, a polymer-modified asphalt layer, a base layer, an asphalt-based room-temperature adhesive layer, and a thin synthetic resin layer. Quality asphalt roofing.

[0005] It is preferable to provide a large number of air layers at the laminating interface between the asphalt-based room-temperature adhesive layer and the synthetic resin thin layer.
In order to provide such a large number of air layers, for example, after embossing a thin synthetic resin layer and performing irregularities such as wrinkling or corrugating, the asphalt-based room-temperature adhesive This can be achieved by laminating the layers. Further, the synthetic resin thin layer,
It is preferably colored. This makes it easier to identify the molten portion.

The surface layer of the present invention can be composed of mineral powder, sand, metal foil or synthetic resin film. The polymer modified asphalt is generally SBS
There are a system type and an APP type, and the representative compositions are as follows. SBS-based composition SBS (styrene / butadiene / styrene block copolymer) 8 to 15 wt% straight asphalt 92 to 85 wt% APP-based composition APP (atactic polypropylene) 30 to 40 wt% straight asphalt 70 to 60 wt% Nonwoven fabrics, mats or woven fabrics made of natural fibers, mineral fibers such as glass, synthetic fibers, etc., alone or blended or blended are used. The asphalt-based room temperature pressure-sensitive adhesive is not particularly limited, but SBS is 5 to 30 wt%, preferably 22 to 28 wt% Petroleum resin (tackifier) 0 to 25 wt%, preferably 17 to 23 wt% straight asphalt 25 to 90 wt% Preferably, the oil is 30 to 40 wt%, and the process oil is 5 to 30 wt%, preferably 15 to 25 wt%.

The polymer-modified asphalt roofing of the present invention will be described with reference to FIG. 11 is mineral powder, 12
Is a polymer-modified asphalt, 13 is a base layer such as a synthetic resin nonwoven fabric, 14 is an asphalt-based room-temperature adhesive layer,
Reference numeral 15 denotes a synthetic resin film having irregularities, preferably a polyolefin film such as polyethylene or polypropylene, for example, a polyethylene film having a thickness of 12 μm. The thickness of each layer is not particularly limited, but is usually as follows. Mineral powder layer 0.1 to 50 μm, preferably 0.1 to 10 μm Polymer-modified asphalt layer 0.5 to 5 mm, preferably 0.5 to 1.5 mm Base layer 0.4 to 3 mm, preferably 0.8 0.5 to 5 mm, preferably 0.5 to 1.5 mm Synthetic resin thin layer 5 to 50 μm, preferably 10 to 25 μm

[0008]

【effect】

(1) Compared with the conventional torch method using the polymer-modified asphalt roofing, the torch method using the polymer-modified asphalt roofing of the present invention is more than twice as fast. (2) Despite the use of a layer having room-temperature adhesiveness, no release paper is used, so no waste material is generated. (3) Compared with the conventional torch method of polymer-modified asphalt, the heating time is shorter, so that energy cost is lower, and the degree of heating is lower, so that synthetic fibers constituting the base material may be deteriorated. Extremely low.

[Brief description of the drawings]

FIG. 1 is a schematic view of a torch method.

FIG. 2 is a schematic view showing a position of a burner flame in the torch method.

FIG. 3 shows a cross-sectional view of a conventional polymer-modified asphalt roofing.

FIG. 4 shows a cross-sectional view of the polymer modified asphalt roofing of the present invention.

[Description of Signs] 1 Mineral powder 2 Polymer-modified asphalt 3 Synthetic fiber non-woven fabric (base material) 4 Polymer-modified asphalt 5 Meltable film (synthetic resin film) 11 Mineral powder 12 Polymer-modified asphalt 13 Synthetic fiber non-woven fabric 14 Asphalt-based Room temperature adhesive layer 15 Synthetic resin film 16 Air layer

──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Hiroyuki Shimamura 1-3-1 Kodai, Adachi-ku, Tokyo Tajima Roofing Co., Ltd. (58) Field surveyed (Int. Cl. ⁷ , DB name) D06N 5 / 00 E04D 5/02-5/14 E04D 11/02

Claims (5)

(57) [Claims] 1. A surface layer, a polymer-modified asphalt layer,
A modified asphalt roofing for a torch method, comprising a base layer, an asphalt-based room-temperature adhesive layer, and a thin synthetic resin layer. 2. The modified asphalt roofing for a torch method according to claim 1, wherein a large number of air layers are provided at a lamination interface between the asphalt-based room-temperature adhesive layer and the synthetic resin thin layer. 3. The modified asphalt roofing for a torch method according to claim 1, wherein the synthetic resin thin layer is a polyolefin-based film. 4. The modified asphalt roofing for a torch method according to claim 1, wherein the synthetic resin thin layer is colored. 5. The method for producing a modified asphalt roofing for a torch method according to claim 2, wherein a synthetic resin thin layer having irregularities is laminated on the asphalt-based room-temperature adhesive layer.