JPH09241619A - Tape for water stopping and water leakage stopping - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prepare the subject tape capable of surely effecting watertight and airtight for a long time in an easy usage such as winding or covering by using water swelling fibers having ultra water-absorbing properties, which are processed into a belt shape for water stopping and water leakage stopping, and have water retainability. SOLUTION: One side or both sides of a formed body (preferably, a formed body obtained by processing a material of 2-5mm in thickness into a belt shaped body having necessary width and length) obtained by processing water swelling fibers having ultra water-absorbing properties into belt shape are subjected to adhesion processing so that they become adhesive to an objective place. In the adhesion processing, preferably a belt-shaped or bar-shaped formed body of synthetic rubber or synthetic resin is bonded to the formed body and subsequently the resultant material is treated for an adhesive processing so that the material becomes adhesive to the objective place.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to water stopping and water leakage prevention, and a simple method of use such as winding, pasting, sandwiching, etc., using a super absorbent water swelling fiber having a water-retaining property formed into a band shape. The present invention relates to an excellent water-stopping / leakage-preventing tape that surely exhibits a watertight and airtight effect over a long period of time.

[0002]

2. Description of the Related Art Conventionally, as a material for preventing water leakage and water leakage of water and sewer pipes, bathrooms, underground structures, etc., which are required to be airtight and watertight, a thin tape-shaped fluororesin is used at the destination 2 Approximately 3 times winding and screwing, or make synthetic rubber or synthetic resin with appropriate viscosity into highly viscous grease and stuff it into a cartridge and squeeze it out at the time of construction, or make a band or rod. It was used by the method of sticking the molded product to the point of use to make it adhere.

[0003]

According to the conventional technique, air is entrained during construction, and air pockets are generated by entrainment of air, which makes it difficult to completely adhere to each other, resulting in a gap, vibration due to an earthquake, or ground subsidence. The seal material does not have a restoring force due to slippage, twisting, and is broken or torn to create voids, which makes it impossible to maintain watertightness and airtightness.
This caused water leakage, and the sealing material was reapplied with additional repair, but the airtightness and watertightness could not be maintained, and the same thing was repeated, which made the difficulty extremely. The present invention solves such a problem.

[0004]

[Means for Solving the Problems] That is, the present invention provides a water-stopping and water-leakage prevention method in which a super-absorbent water-swellable fiber is formed into a band shape and one side or both sides of the formed body is subjected to an adhesive treatment capable of adhering to a destination of use. It is a tape. Or, on one or both sides of a band-shaped molded body of super absorbent water-swellable fiber, a synthetic rubber or synthetic resin molded into a band-shaped or rod-shaped is adhesively adhered, and a band-shaped tape that is adhesively processed and can be adhered to the destination of use. It is a waterproof and leakproof tape that is in close contact. Further, the super-water-absorbent-water swellable fiber may be used in a strip shape without being subjected to an adhesive treatment.

According to the present invention, since there is a molded article obtained by molding a super-water-absorption-water-swelling fiber having a water-retaining property into a band shape in the through-holes or joints where water-stopping and leakage-prevention are required, the molding is performed. Since the body instantly expands due to water absorption and the entrained air is discharged to the outside, the air pocket can be eliminated, and the void can be completely sealed to exhibit watertightness and airtightness. In addition, since super absorbent water swellable fibers have several times the expansive force, unreacted fibers will react again with water leakage and expand to maintain airtightness if the width of the voids expands, resulting in airtightness and watertightness. It can provide long-term retention of sex.

In the present invention, the band-shaped super-water-absorption-water-swellable fiber molding is a super-water-absorption-water-swellable fiber alone, or the fibers and other fibers, for example, chemical fibers such as polyester, nylon, rayon, acryl and polypropylene. Or cotton,
Mix with natural fibers such as hemp and wool, and woven it in the usual way.
Examples include net cloth, non-woven cloth, and rod-shaped ones.
Here, the super absorbent water swellable fiber is a fiber having a water absorption capacity (indicating how many times the weight of absorbed water at the time of water absorption equilibrium is equal to the weight of dry fiber) is 3 to 300 times, and the woven fabric is woven. Fibers with strength that can be processed into cloth, net cloth, non-woven cloth, and rods. For example, commercially available products include "Lanseal" manufactured by Toyobo Co., Ltd., "KKF" manufactured by Asahi Kasei Corporation, CMC crosslinked fiber with chemical name, "Oasis" manufactured by Courtalls, and the like. The water absorption capacity of the super-water-absorption-water-swellable fiber molded body may be limited because the thickness of the molded body, the basis weight, the mixing ratio of the super-water-absorption water swellable fiber, the surface shape and the area of the structure to be used, etc. are different. No, but usually 1-100 l /
a m ^2. The water absorption capacity here means that a 10 cm square fiber molded body that has absorbed water is sandwiched between 10 cm square resins,
It is shown by the amount of water retention after applying a load of 1 kg. The water absorption capacity can not be sufficiently water-shutoff is less than 1l / m ^2, there is a problem in the thickness increases construction of the molded body exceeds 100l / m ^2.

In the present invention, the sticking process capable of adhering means
Natural rubber, SBR, IR, CR, NBR, EPDM, I
IR, PVC, vinyl acetate, Hypalon, and their copolymers, etc., kneaded with a filler, a plasticizer, a flow accelerant, and a flow accelerant as necessary, and heated to an appropriate temperature. Then, the liquefied material is applied to the surface necessary for adhesion in an amount necessary for adhesion.

The shape of the super-water-absorption-water-swelling fiber having water-retaining property used for the tape for preventing water leakage and water leakage is preferably a molded product obtained by forming a band having a thickness of 2 mm to 5 mm into a required width and length.

[0009]

With the above-mentioned structure, the super-absorbent-water swelling fiber instantly expands due to water absorption, completely sealing the voids, and water-tightness and air-tightness are exhibited. If voids are created again for some reason, the unreacted super-absorbent water-swellable fiber absorbs water and expands, following the expansion and contraction of the seal part, repeatedly exerting the excellent water-tightness and air-tightness, and for a long time. The effect is maintained.

Conventional sealing tapes, strip-shaped or rod-shaped synthetic rubber or synthetic resin moldings, and grease-shaped sealing materials have a problem of air entrapment during construction and pressure bonding, but the present invention is fibrous and soft, In addition to buffering the pressure at the time of crimping, it also acts as an air absorbent, absorbing the air and eliminating the problem of water leakage by forming air pockets, and discharging the air to the outside when swelling, complete Airtightness and watertightness are exhibited.

[0011]

EXAMPLES The present invention will be described in more detail based on the drawings below, but the invention is not intended to be limited thereto.
The invention can be appropriately modified and implemented without changing the gist of the invention. First, FIG. 1 shows a non-woven fabric obtained by processing super absorbent water-swellable fibers into a band having a width of 20 mm and a thickness of 2 mm (Lanseal 100% 260 manufactured by Toyobo Co., Ltd.).
g / m ² ) 10 liquefied SBR 11 is evenly applied to 10a on the surface of g / m ² ) so as to have a thickness of 0, 2 mm to 0, and 3 mm. It is a sectional view of water and a water leakage prevention tape (hereinafter referred to as the present invention). Next, as shown in FIG. 2, PVC with a diameter of 10 cm
The tape 11a of the present invention is adhered and fixed to the surface of the pipe so that the inside of the water tank, which is the tip of the apparatus, has a wall thickness of 10 cm. Then, as shown in the sectional view of FIG. 3, the water tank is attached to the penetrating portion of the structure having a wall thickness of 10 cm. As shown in FIG. 4, even if the gap between the penetrating portions becomes large, the super-water-absorption-water-swellable fiber 10 absorbs water, swells and adheres to it, and exhibits watertightness and airtightness.

[0012] Even if the conventional sealing material of a fixed shape is completely equipped as shown in Fig. 5, when the gap between the penetrations becomes large due to vibration, ground subsidence, etc., the sealing material peels off as shown in Fig. 6. As a result, voids are created, airtightness is impaired and water leakage is caused. However, in the tape of the present invention, since 10 super absorbent water swellable non-woven fabrics are bonded and processed on the surface which comes into contact with water leakage, the tape is swollen and watertight as shown in FIG.
The excellent effect of maintaining the aerodynamics and stopping the water was recognized.

As the non-woven fabric obtained by processing super absorbent water-swellable fibers, Toyobo Co., Ltd. "Lanceir" non-woven fabric type,
TC-300, SD-1 and NP-1 were used. TC
-300 is a Lanseal 260 g / m ² basis weight and has a water absorption capacity of 20 l / m ² , and SD-1 has a Lanseal of 5
0% by weight, 25% by weight of polyester fiber and 25% by weight of heat-bonded polyester fiber were mixed and then formed by a normal hot-air-bonding method with a basis weight of 80 g / m ² to obtain water absorption capacity. Was 4 l / m ² . Also, N
P-6 was blended so that the run seal was 70% by weight and the polyester fiber was 30% by weight, and the basis weight was 150 g /
In m ² non-woven fabric was molded in a usual needle punching,
The water absorption capacity was 9 l / m ² .

[0014]

As described in detail above, by absorbing water,
The fibers instantly swell and maintain watertightness and airtightness, and even if voids are created again at the joint for some reason, the unreacted super absorbent water swellable fiber absorbs water and repeats the swelling reaction, following the gap. Since the voids are sealed, no water leakage occurs and a great effect is provided for a long period of time, and the present invention exhibits excellent and unique effects.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a water-stop and water-leakage-preventing tape having an adhesive processed according to the present invention.

FIG. 2 is a plan view of the tape of the present invention wound on a PVC pipe having a diameter of 10 cm.

FIG. 3 is a cross-sectional view in which the pipe of FIG. 2 which is a drainage pipe of a water tank is attached to a penetrating portion of a structure.

[Fig. 4] Even if the gap between the penetrations becomes large, water absorption causes 10
FIG. 4 is a cross-sectional view in which the super-water-absorption swelling fiber of FIG.

FIG. 5 is a cross-sectional view of a penetrating portion of a water tank in which a conventional sealing material is attached.

FIG. 6 is a cross-sectional view in which a conventional sealing material having a fixed shape is torn and peeled off by a gap in a penetrating portion.

[Explanation of symbols]

 10 ... Super absorbent water swellable fiber 10a ... 〃 and SBR adhesive surface 11 ... SBR 11a ....

Claims (3)

[Claims] 1. A water-stopping / leakage-preventing tape, wherein one or both sides of a molded article formed by processing super absorbent water-swellable fibers into a strip shape is adhesively processed so that it can be adhered to the destination of use. 2. A tape for preventing water and water leakage, wherein one or both sides of the tape according to claim 1 is bonded with a band-shaped or rod-shaped molded body of synthetic rubber or synthetic resin, and further adhesive-processed so that it can be adhered to the place of use. . 3. A tape for preventing water leakage and water leakage of a molded product obtained by molding a super absorbent water swellable fiber into a band shape.