JPH073961A - Polymer reformed asphalt roofing and manufacture thereof - Google Patents

Abstract

PURPOSE:To shorten the heating time during construction and in its turn accelerate the construction speed by using asphalt roofing formed of an asphalt group normal temperature adhesive layer, a synthetic resin film, an air layer, and the like. CONSTITUTION:Asphalt roofing is prepared being formed of a surface layer, a polymer reformed asphalt layer 12, a base material layer 13, an asphalt group normal temperature adhesive layer 14 and a thin synthetic resin layer 15. At this time, mineral powder/grain 11 or the like is used for the surface layer, and natural fiber or the like is used as the base material. The thin synthetic resin layer 15 is previously formed into uneven shape by embossing, wrinkling, or the like so as to form an air layer 16 at the laminated interface at the time of being laminated on the asphalt group normal temperature adhesive layer 14. This asphalt roofing is constructed on the backing surface of the rooftop or the like by a torch construction method. In order to facilitate the discrimination of a torch fused part, the thin synthetic resin layer 15 may be previously colored.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a modified asphalt roofing for a torch method and its manufacturing method.

[0002]

2. Description of the Related Art As a means for constructing asphalt roofing on a lower ground such as a rooftop, there is a torch construction method, and the outline of this torch construction 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 grain or mineral powder grain, 2 and 4 are polymer-modified asphalt, 3 is a fibrous reinforcing layer, and 5 is a meltable film. The reason for the presence of the meltable film in No. 5 is that this type of roofing material is usually wound into a roll and transported,
It is also stored and stored, but during this time, the modified asphalt, which is exposed to direct sunlight and has almost no tack at room temperature, becomes tacky, preventing partial sticking to layers such as sand grains. This is because The torch method using the polymer-modified asphalt roofing is usually performed as follows. That is, as shown in FIG. 1 and FIG. 2, the back surface and base surface of the polymer-modified asphalt roofing roll-shaped sheet are heated to 1100 to 1300 ° C. by a burner flame, and the back surface of the sheet is sufficiently melted, and the asphalt is melted in the melting portion. Check that the bank (reservoir) is made and 5-1 from the side lap
It was important to work with molten asphalt flowing out 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 construction speed is at most about 1 to 2 m / min. Therefore, an object of the present invention is to provide a novel asphalt roofing which can be constructed by only mild heating and melting, and thereby can significantly increase the construction speed, and a method for producing the same.

[0004]

The present invention comprises a surface layer, a polymer-modified asphalt layer, a base material layer, an asphalt-based room temperature adhesive layer, and a synthetic resin thin layer. Quality asphalt roofing.

It is preferable to provide a large number of air layers at the lamination interface between the asphalt-based room temperature adhesive layer and the synthetic resin thin layer.
In order to provide a large number of air layers in this way, for example, embossing is applied to a synthetic resin thin layer, and wrinkling or corrugation is applied to form unevenness, and then this is applied to the asphalt-based room temperature adhesive of the roofing base material. This can be achieved by stacking layers. In addition, the synthetic resin thin layer,
It is preferably colored. This makes it easier to identify the melted portion.

The surface layer of the present invention can be composed of mineral powder particles, sand particles, metal foil or synthetic resin film. The polymer modified asphalt is generally SBS
There are a system type and an APP type, and their typical compositions are as follows. SBS-based composition SBS (styrene / butadiene / styrene block copolymer) 8-15 wt% straight asphalt 92-85 wt% APP-based composition APP (atactic polypropylene) 30-40 wt% straight asphalt 70-60 wt% As a base material A non-woven fabric, a mat or a woven fabric, which is made of natural fibers, mineral fibers such as glass, or synthetic fibers, alone or mixed, or mixed and woven. The asphalt-based room temperature adhesive is not particularly limited, but SBS 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% 30-40 wt% process oil 5-30 wt%, preferably 15-25 wt% is suitable.

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 material layer such as synthetic resin nonwoven fabric, 14 is an asphalt-based room temperature adhesive layer,
15 is 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 material layer 0.4 to 3 mm, preferably 0.8 ~ 1.5 mm Asphalt-based room temperature adhesive layer 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 has a construction speed more than twice as fast. (2) Since a release paper is not used, a waste material is not generated even though a layer having room temperature adhesiveness is used. (3) The energy cost is low because the heating time is short compared to the heating by the torch method of the conventional polymer-modified asphalt, and the degree of heating is low, which may deteriorate the synthetic fibers and the like constituting the substrate. Extremely low.

[Brief description of drawings]

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

FIG. 2 is a schematic view showing the 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 a polymer modified asphalt roofing of the present invention.

[Explanation of symbols]

 1 Mineral Powder 2 Polymer Modified Asphalt 3 Synthetic Fiber Nonwoven Fabric (Base Material) 4 Polymer Modified Asphalt 5 Melt Film (Synthetic Resin Film) 11 Mineral Powder 12 Polymer Modified Asphalt 13 Synthetic Fiber Nonwoven Fabric 14 Asphalt Room Temperature Adhesive Layer 15 Synthetic Resin film 16 Air layer

Front page continuation (72) Inventor Hiroyuki Shimamura 1-3-1 Kodai, Adachi-ku, Tokyo Tajima Roofing Co., Ltd.

Claims (5)

[Claims] 1. A surface layer, a polymer-modified asphalt layer,
A modified asphalt roofing for a torch construction method, which comprises a base material layer, an asphalt-based room temperature adhesive layer, and a synthetic resin thin 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 laminating 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 thin synthetic resin layer is a polyolefin film. 4. The modified asphalt roofing for a torch method according to claim 1, 2 or 3, wherein the thin synthetic resin 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.