JP2801375B2 - Seat connecting member, seat and seat connecting structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention connects relatively small sheets manufactured in a factory to each other on site in tunnels, seawalls, embankments, reservoirs, waste disposal, landfills, and the like. Further, the present invention relates to a sheet connecting member for finishing a large sheet having a required area, a sheet and a sheet connecting structure. Although the present invention is usually applied to a sheet for waterproofing, it goes without saying that the present invention can also be applied to a water permeable sheet and the like.

(Prior art) Conventionally, sheets for stopping water have been used for revetment works such as tunnel works and reservoirs. In particular, a waterproof sheet made by laminating a water-permeable sheet such as a nonwoven fabric or a woven fabric and an impermeable sheet is used for tunnel construction. The water-stop sheet is stretched on the water-stop construction surface, and connected to an adjacent water-stop sheet by overlapping its ends. As a means for connecting the ends of the water-stop sheets that have been superimposed, a connection method by welding (see Japanese Utility Model Application Laid-Open No. 57-60997), a connection method using an adhesive or an adhesive (Japanese Utility Model Application Publication No. 61-3999, Kuniaki 62-35
No. 760), two rows of convex portions are provided at one end of the water-stop sheet, and two rows of concave portions corresponding to the above-mentioned convex portions are provided at the other end, and adjacent water-stop sheets are overlapped with each other. In addition, a method has been proposed in which a projection and a recess are engaged with each other and a connection is made by interposing an adhesive waterproof material between the engagement portions (see JP-A-1-315511).

(Problems to be solved by the invention) However, the ends of the waterproof sheet are overlapped and welded,
The method of bonding with an adhesive cannot be applied to a waterproof sheet with a thickness of 0.8 mm or less, and even if the waterproof sheet is thick, it is easy to make a connection with sufficient water pressure at the construction site. is not. Also, two rows of concave portions are provided on one side of the superposed sheets, and two rows of convex portions corresponding to the concave portions are provided on the other side so that the concave portions and the convex portions are engaged with each other. It is difficult to fully fit the concave and convex parts with the connection method with water material interposed, and even if it can be applied to water stoppage work laid on flat ground, even if it is applied to the wall surface of tunnel construction or steep slope There were problems such as poor workability on the wall.

Therefore, an object of the present invention is, for example, in tunnel construction, civil engineering construction, etc., sheet joining work is easy,
Moreover, it is an object of the present invention to provide a seat connecting member, a seat and a seat connecting structure in which a connecting portion has a high water pressure resistance.

(Means for Solving the Problems) The present inventors have thoroughly studied the conventional sheet connection structure to achieve the above object, and surprisingly found that the thickness of the rubber-based adhesive layer interposed between the sheets was reduced. , A high water pressure resistance can be obtained at the seat connecting portion by maintaining the sheet connecting member at a predetermined thickness or more, and further intensive studies have been made to provide a seat connecting member and a seat and a seat connecting structure with improved workability at the site. As a result, the present invention has been achieved.

That is, the present invention relates to a sheet connecting member disposed between two sheets whose ends are overlapped and connecting the two sheets, wherein the sheet connecting member is a flexible band-shaped body on both sides. A plurality of continuous projections are provided upright in the longitudinal direction of the belt-like body, and a rubber-based adhesive is filled between the plurality of continuous projections, and a release paper is attached to a surface of the rubber-based adhesive. It is a sheet | seat connection member characterized by the above-mentioned. In another sheet connecting member of the present invention, a plurality of continuous protrusions are provided on one surface of a flexible band in the longitudinal direction of the band, and the plurality of continuous protrusions are provided on the one side. The continuous protrusions of the flexible band are engaged via a rubber-based adhesive layer, and a rubber-based adhesive layer is provided on the upper and lower surfaces of the flexible band. A connecting member characterized in that release paper is attached to the surface of the layer.

The present invention is also a sheet characterized in that the above-mentioned sheet connecting member is adhered along an edge of the sheet.

Further, the present invention is characterized in that the sheet connecting member is disposed between two sheets whose ends are overlapped, and the two sheets are integrally connected via the sheet connecting member. This is the seat connection structure.

(Operation) According to the present invention, a rubber-based adhesive is filled between continuous projections provided on both sides of a flexible belt-shaped body, or a pair of belt-shaped bodies provided with continuous projections on one side is formed. Since the continuous projections are engaged with each other via the rubber-based adhesive layer, the continuous projections prevent the rubber-based adhesive from flowing out even if two sheets are pressed together via the sheet continuous member. The thickness of the interposed rubber-based adhesive layer can always be maintained at a predetermined thickness. Also, two sheets can be superimposed via a sheet connecting member filled with a rubber adhesive beforehand, or an adjacent sheet can be superimposed on a sheet having a sheet connecting member adhered to one end to facilitate on-site operation. The sheet can be stretched and connected simultaneously.

(Embodiment) Next, an embodiment of the seat connecting member, the seat and the seat connecting structure of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of a seat connecting member 1 of the present invention,
A pair of flexible strips 4 having a plurality of continuous projections 2 erected on one side are disposed opposite to each other so as to engage the continuous projections 2, and between the engaged continuous projections. The rubber adhesive 3 is filled. A rubber-based adhesive layer 5 is formed on the upper and lower surfaces of the flexible belt-like body 4 with which the continuous projections are engaged, and a release paper 6 is attached to the surface of the rubber-based adhesive layer 5.

The second is a perspective view of another sheet connecting member 1 'of the present invention, a flexible strip 8 having a plurality of continuous projections 7 erected on both sides thereof. Is filled,
Release paper 6 is attached to the surface of the rubber adhesive 9.

The flexible strips 4 and 8 are made of, for example, polyamide, polyethylene, polypropylene, polyester, vinyl chloride-based polymer, ethylene-vinyl acetate copolymer, polyurethane, synthetic rubber, etc. Molded in such as. And one side of the band at the time of molding,
Alternatively, continuous projections 2, 7 each having a bulge at the tip are formed on both surfaces. Such flexible strips are typically 20-200 m wide
m, thickness 0.1-3.0 mm. The pitch of the continuous projections 2, 7 erected on one or both sides of the band is usually 0.5 to 5 / c.
m, the thickness of the leg of the continuous projection is 0.5 to 5.0 mm, and the tip has an enlarged shape with respect to the leg, such as a bulging portion, for example, a mushroom shape or an umbrella shape. The height of the projection is 1 to 10 mm. The width of the band, the pitch of the continuous projection, the height, and the shape of the bulge are determined so that the rubber adhesive filled between the continuous projections increases when pressure resistance is required. You.

The rubber-based adhesives 3, 9 filled between the plurality of continuous projections erected on the flexible band and the rubber-based adhesives 5 provided on the upper and lower surfaces of the band 4 are resistant to temperature change and water deterioration. It withstands natural conditions such as heat resistance and weather resistance, and is usually butyl rubber, chloroprene rubber, nitrile rubber, styrene
Adhesives such as butadiene rubber, silicone rubber, and isobutylene rubber are used. However, other adhesives, such as an epoxy-based or urethane-based adhesive, may be used in combination from the viewpoint of water pressure resistance and workability.

FIG. 3 is a cross-sectional view of the sheet having the sheet connecting member 1 shown in FIG. 1 attached thereto, and FIG. 4 is a cross-sectional view of the sheet having the sheet connecting member 1 'shown in FIG. The sheet connecting member is adhered to the sheet 10 by the rubber adhesive 5 applied to the lower surface of the sheet connecting member 1 or the rubber adhesive 9 filled between the continuous projections 7.

As shown in FIGS. 3 and 4, the sheet continuous members 1, 1 '
If the sheet is attached along the edge of the sheet 10 in advance and the release paper 6 is removed at the site, the sheet can be connected simply by stacking another sheet on the sheet connecting member, and the sheet connecting operation is easy. is there.

Sheet 10 used in the present invention, for example, polyamide,
Water-impermeable sheets obtained by molding polymers such as polyethylene, polypropylene, ethylene-vinyl acetate copolymer, natural rubber, synthetic rubber, and polyester by melt molding, cast molding, etc., or polyamide fibers and polyester fibers And a water-permeable woven fabric, net-like material, and the like.

In the case of a sheet for water stoppage, the sheet must have a thickness that satisfies at least 3 kg / cm ² G in water resistance measured in accordance with JIS K6328, 5, 3, 9, `` Rubbered cloth, waterproof test '' method. It is necessary to prevent sheet rupture accidents after water stoppage work. This water-impermeable sheet may be used alone, but it is necessary to drain water during tunnel construction and civil engineering work, so polyamide fibers, polyester fibers, polypropylene fibers, etc. are usually used as water guide layers. A water-permeable sheet such as a nonwoven fabric or a bulky knitted woven fabric made of fibers is used by being laminated on a water-impermeable sheet.

FIGS. 5 and 6 are cross-sectional views showing a sheet connection structure in which two sheets 10, 10 'are connected via the sheet connection members 1, 1' shown in FIGS. 1 and 2, The release paper 6 attached to the sheet connecting member is peeled off, and the end of the sheet 10 'connected to the sheet 10 is overlapped on the surface of the sheet connecting member. The sheets 10, 10 'are securely pressed.

(Effects of the Invention) The seat connection member, the seat and the seat connection structure of the present invention facilitate the connection work of the seat in a water stoppage work such as a tunnel work and a civil engineering work. Also, by filling the rubber-based adhesive between the plurality of continuous projections, the adhesive can be prevented from overflowing, and a connection structure having high water pressure resistance can be obtained.

[Brief description of the drawings]

1 and 2 are perspective views of a sheet connecting member of the present invention, and FIGS. 3 and 4 are cross-sectional views of a sheet to which a sheet connecting member is adhered along an end portion. FIG. 6 and FIG. 6 are sectional views showing a structure in which two sheets are connected via a sheet connecting member. 1,1 '... Sheet connecting member 2,7 ... Continuous projection 3,5,9 ... Rubber adhesive 4,8 ... Flexible strip 6 ... Release paper 10,10' ... Sheet

──────────────────────────────────────────────────続 き Continuation of the front page Examiner Tadayoshi Ono (56) References JP-A-1-315511 (JP, A) JP-A-56-70312 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) E02B 3/12 E21D 11/38

Claims (4)

(57) [Claims] 1. A sheet connecting member which is disposed between two sheets whose ends are overlapped and connects the two sheets, wherein the sheet connecting member is formed of a flexible band. A plurality of continuous projections are erected on the both sides in the longitudinal direction of the band, and a rubber-based adhesive is filled between the plurality of continuous projections, and a release paper is attached to the surface of the rubber-based adhesive. A sheet connecting member comprising: 2. A sheet connecting member which is disposed between two superposed sheets and connects the two sheets, wherein the sheet connecting member is formed of a flexible band. On one surface, a plurality of continuous projections are erected in the length direction of the band, and the pair of flexible projections on which the plurality of continuous projections are erected is formed by a rubber-based adhesive layer. And a rubber-based adhesive layer is provided on the upper and lower surfaces of the flexible strip, and a release paper is attached to the surface of the rubber-based adhesive layer. Connection member. 3. A sheet, wherein the sheet connecting member according to claim 1 or 2 is attached along an edge of the sheet. 4. The sheet connecting member according to claim 1, wherein the sheet connecting member according to claim 1 is disposed between two sheets whose ends are overlapped with each other.
A sheet connection structure in which two sheets are integrally connected via a sheet connection member.