JP3021372U - Laminated waterproof sheet - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose is to provide laminated water-impervious sheets suitable for the environmental landscape that are laid in waste disposal sites. [Structure] A laminated water-impervious sheet in which a thick felt sheet (3) is heat-welded as a cushioning material on one side of a thick asphalt sheet (1) and a green colored synthetic fiber nonwoven sheet is laminated on the other side. .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to a laminated impermeable sheet that is used by laying it in a waste landfill, a wastewater treatment pond, a reservoir, etc.

[0002]

[Prior art]

 Conventionally, a relatively thick waterproof vinyl sheet or rubber sheet has been used as a water-blocking sheet laid and used in this type of waste landfill, wastewater treatment pond, or reservoir.

However, even though these tarpaulins are thick sheets with a thickness of about 1.5 mm, they are pierced by grass sprouts from the ground soil or are buried in rocks. It often happened that a sharp edge was damaged and water leakage occurred.

[0004]

[Problems to be solved by the device]

 For this reason, the applicant has developed an asphalt sheet having a thickness of around 5 mm.

This asphalt sheet is a waterproof sheet in which a mat-like long-fiber thick non-woven fabric is used as a core material and is impregnated with special asphalt having excellent weather resistance, and has excellent durability against grass and rocks. Widely used.

However, after laying this tough asphalt sheet, there is a risk that the construction vehicle and tools during waste treatment may hit and be damaged, and that it is thick and difficult to adapt to the groundwork. Since it is an asphalt sheet, it has the drawback that it is black and does not match the environmental landscape.

[0007]

[Means for Solving the Problems]

 For this reason, it may be possible to apply paint to color it, but it is not suitable for use because it has poor durability and tends to be discolored and unsightly.

The present invention is intended for laminating thick felts or nonwoven fabrics of colored synthetic fibers in consideration of adaptability to the underlying behavior and adaptability to the environmental landscape. It is possible to firmly and integrally laminate by heat welding with, and to provide a laminated impermeable sheet that is strong and suitable for construction of a waste landfill disposal site and wastewater treatment pond that is suitable for the environmental landscape.

[0009]

[Action]

 Since the base of the water-impermeable sheet of the present invention is an asphalt sheet, it is possible to easily and strongly laminate the felt sheet as a cushioning material and the colored synthetic fiber by heat welding. By making the color of the colored synthetic fiber nonwoven fabric green, it is possible to make it look like a lawn vegetation.

[0010]

【Example】

 The laminated water-impervious sheet of the present invention will be described with reference to the accompanying drawings. (1) is a thick asphalt sheet in which a mat-shaped long-fiber thick non-woven fabric is used as a core material, and a special asphalt having excellent weather resistance is formed on the whole. Since it was impregnated in, the thickness used is around 5 mm. (2) is a non-woven sheet of colored synthetic fiber, which is generally colored green and uses polyester or polypropylene. (3) is a thick felt sheet.

FIG. 1 is a cross-sectional view of a laminated waterproof sheet of the present invention in which a colored synthetic fiber non-woven sheet (2) is heat-welded to one side of a thick asphalt sheet (1). Figure 2 shows a cross-sectional view of a water-impervious sheet in which a colored synthetic fiber nonwoven sheet (2) is welded on one side of a thick asphalt sheet (1) and a thick felt sheet (3) is welded on the other side. There is. FIG. 3 is a cross-sectional view of a water-impervious sheet in which thick felt sheets (3) and (3) are weld-laminated on both sides of the thick asphalt sheet (1). Figure 4 shows a water-impervious sheet in which thick felt sheets (3) and (3) are laminated on both sides of a thick asphalt sheet (1), and a colored synthetic fiber nonwoven fabric sheet (2) is also welded and laminated on one side of the laminated sheet. 2 is a sectional view of FIG.

[0012]

[Effect of device]

 The laminated waterproof sheet of the present invention is based on the tough thick asphalt sheet (1) as a base material, and the thick felt sheet (3) and the colored synthetic fiber non-woven fabric sheet (2) are laminated and integrated on the base material. When it is placed on the lower layer by stacking felt sheets, it is comfortable to the ground, and when it is placed on the upper layer, it is a construction vehicle or tool. It becomes a protective layer against.

By laminating the nonwoven fabric sheet (2) of colored synthetic fibers, it becomes a sheet that matches the environmental landscape, and the landscape after construction is well used and widely used compared to the conventional black asphalt sheet. can do.

Further, it is easily heat-welded, has excellent weather resistance without peeling, has excellent adaptability to the behavior of the underlayer, and exhibits excellent durability.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of the waterproof sheet of the present invention.

FIG. 2 is a cross-sectional view of a waterproof sheet according to another embodiment.

FIG. 3 is a sectional view of another impermeable sheet.

FIG. 4 is a sectional view of a waterproof sheet according to still another embodiment.

[Explanation of symbols]

 (1) ... Thick asphalt sheet (2) ... Colored synthetic fiber nonwoven sheet (3) ... Thick felt sheet

Claims (4)

[Scope of utility model registration request] 1. A laminated waterproof sheet comprising a thick synthetic asphalt sheet (1) and a colored synthetic fiber nonwoven fabric sheet (2) deposited on one side thereof by welding. 2. A laminated water-impervious sheet comprising a thick synthetic asphalt sheet (1) and a colored synthetic fiber nonwoven fabric sheet (2) welded and laminated on one surface thereof, and a thick felt sheet (3) on the other surface thereof. 3. A laminated impermeable sheet, characterized in that thick felt sheets (3), (3) are welded and laminated on both sides of the thick asphalt sheet (1). 4. A thick asphalt sheet (1) having thick felt sheets (3) and (3) laminated on both sides thereof, and a colored synthetic fiber nonwoven fabric sheet (2) being welded and laminated on one side of the sheet. Characterized laminated waterproof sheet.