JP2562176Y2 - Sealing material for waterproofing - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention is provided with a water-expandable seal member which is used for sealing a joint portion of a concrete casting structure, a sealing portion of a side block in a manhole or a sealing portion of a sewer pipe. And a waterproof sealing material.

[0002]

2. Description of the Related Art Conventionally, waterproof joints made of a single water-expandable material have been used for joints of structures such as shield segments, box culverts, and assembly manholes. At the time of this construction, an adhesive is applied to the joint surface to be sealed and / or the sealing surface of the sealing material, and the sealing material is firmly applied to the joint portion via the adhesive so as not to leak water. Affixed.

[0003]

However, when the above-mentioned waterproof sealing material is made of a water-expandable material, the adhesive interposed for sticking the sealing material impedes the subsequent absorption and expansion of the sealing material, This is a negative factor, such as hindering adaptation between the sealing material and the sealing surface of the joint. In other words, when the adhesive applied to the sealing surface is released after being solidified and adhered to the sealing material side, the solidified adhesive hinders the water absorption and expansion of the sealing surface, so that an initial water stopping effect cannot be obtained. Will be.

[0004]

[Purpose of the present invention] The present invention has been made based on the above-mentioned circumstances, and does not hinder the water stopping effect due to water absorption and expansion during use. It is an object of the present invention to provide a waterproof sealing material having a structure that can be easily and reliably mounted.

[0005]

Therefore, in the waterproofing sealing material of the present invention, as is apparent from the illustrated embodiment, the sealing surface of the sealing member (1) made of a water-expandable material is provided. A recess (3) is formed leaving the edge (2) at least on both sides thereof, and the recess (3) is lower than the edge (2) in the recess (3) .
When the seal member (1) is provided at the joint with the adhesive (4), the edge (2) comes into direct contact with the joint.

[0006]

Therefore, since the adhesive (4) is provided in the recess (3) of the sealing member (1) lower than the edge (2) ,
When attaching a member to be joined, for example, a pipe for pipe (5) to the mounting hole (6A) of the structure (6) via the sealing member (1), if the adhesive (4) hinders the attachment. Without
Smooth construction is possible, and the adhesive (4) does not protrude into unnecessary places. Moreover, after the construction, the sealing member (1) expands due to the water absorbing effect at the edge (2) forming the concave portion (3) and directly contacts the sealing surface of the member to be joined. The water stopping effect can be fully exhibited.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A waterproof sealing material according to the present invention will be specifically described below based on the illustrated embodiment. In FIG.
Reference numeral 1 denotes a band-shaped sealing member, which is made of a vulcanized rubber-based or thermoplastic elastomer-based water-swellable material. Cut at both edges along the longitudinal direction of one surface of the seal member 1
By leaving the edge 2 having a face angle shape , a shallow concave portion 3 having a predetermined depth is formed, in which an adhesive 4 is filled with a layer slightly thinner than the depth of the concave portion 3. It should be noted that the use of a synthetic rubber-based hot-melt type pressure-sensitive adhesive as the pressure-sensitive adhesive 4 is more advantageous in terms of the productivity of the sealing material. In the case where concrete is to be sealed, this adhesive is used as a styrene / isoprene / styrene block copolymer or styrene / butadiene / styrene.
It is preferable to use a synthetic rubber-based hot-melt type pressure-sensitive adhesive made of a styrene-based block copolymer.

[0008] Such a waterproof sealing material A may be pre-filled and equipped with an adhesive 4 in the recess 3 at a factory.
In this case, it is convenient to stack or wind the product at the time of shipment if a release paper H is attached to the surface of the seal member 1 facing the concave portion 3.

For example, as shown in FIG. 2, the waterproof sealing material A is provided on the outer peripheral surface of the pipe end of the pipe 5 for piping.
The waterproof sealing material A is also wound on the inner peripheral surface of the mounting hole 6A formed on the side surface of the concrete structure, for example, the manhole 6, so that the concave portion 3 side faces the concave portion 3. The waterproof sealing material A is adhered to each other by pressing, and the piping pipe 5 and the mounting hole 6 into which the piping pipe 5 is inserted are attached.
A mortar 8 is applied to the gap with the mortar 8. At this time,
The sealing material A for waterproofing is pressed to adhere.
Is deformed so that the edge 2 having a square cross section opens outward.
However, the side of the edge 2 on the side of the recess 3 is the pipe 5
Since it is in contact with the hole 6A in a compressed and deformed state, the initial
A water stopping effect can be exhibited. Thereafter, in the state of use, for example, when water intrudes from the outside of the manhole 6 into the attachment portion of the pipe 5 for piping, the seal member 1 absorbs the infiltrated water and expands, and the edge portion 2 further expands the joint portion. sealing surfaces are pressed in contact with, to reliably exhibit waterproofing effect.

The waterproof sealing material A shown in FIG. 3 is a modified example in which the edge portion 2 is formed in a camo-shaped shape in order to facilitate elastic deformation of the edge portion 2 during construction. This allows, for example,
Where pipes are connected at an acute angle to the manhole
For example, when the waterproof sealing material A is wound around the outer peripheral surface of the pipe, even if the line drawn by the sealing material A is slightly bent, the edge portion 2 is easily brought into contact with the pipe so that a more reliable stop is achieved. Water effect is obtained. Further, the sealing material A for waterproofing shown in FIG.
Is a device in which a plurality of recesses 3 are formed in a sealing member 1 and an adhesive 4 is filled therein.

Further, as in each of the embodiments shown in FIGS. 5 to 7, a cam-shaped ridge 7 is provided on the surface of the seal member 1 opposite to the concave portion 3, so that the seal member at the time of construction is provided. 1 can sufficiently secure the amount of elastic deformation, and can further improve the workability. As shown in FIG. 5, the seal member 1 is divided into a central portion 1A including the concave portion 3 and both side portions 1B. The central portion 1A is made of a water-expandable material, and the both side portions 1B are made of non-water. A composite structure composed of an expansive material may be used. In this case, the sealing member 1 after construction
Restrains excessive water expansion and seals for waterproofing
The effect of preventing peeling from an object can be exhibited. Also,
In the embodiment shown in FIG. 6, the non-water-swellable material 1C
Is arranged. Further, in the embodiment shown in FIG.
Are formed as sharp ridges.

In each of the waterproof sealing materials A shown in the above embodiments, an adhesive or a pressure-sensitive adhesive 4 is provided in a layered manner in a concave portion 3 formed on a sealing surface of a sealing member 1. However, the present invention is not limited to this. When the waterproof sealing material A is disposed on the outer peripheral surface of the member to be joined or the like, the adhesive or pressure-sensitive adhesive 4 is pressed by pressing.
The adhesive or the pressure-sensitive adhesive 4 may be provided, for example, in a linear shape as long as the adhesive or the adhesive 4 extends in a layer shape slightly smaller than the depth of the concave portion 3.

[0013]

[Effect of the invention The present invention, as described in detail above, the seal surface of the seal member, a recess to I along the seal line of the joint portion of the structure, leaving the edges on both sides, this Depression
The part is provided with an adhesive lower than the edge, and when the seal member contacts the joint, the edge formed on both sides of the recess is formed.
Because the part was configured to directly contact the joint,
A practical effect of easily and reliably attaching the sealing material to the joint of the structure can be exhibited without hindering the water stopping effect due to the water absorption expansion in use.

Further, the tip of the edge is formed in an arc-shaped or triangular section.
The shape makes it easier for the structure
Even if the seal line at the ground is bent, connect the edge to the structure
Since it is easy to touch, a reliable water stopping effect can be obtained.

In addition, the water-swellable material is removed except for the concave side of the edge.
Construction with a composite structure of
Restrains excessive water swelling of the later seal member and seals for waterproofing
The material can be prevented from peeling from the object to be sealed.
You.

The adhesive provided in the concave portion is styrene.
・ Isoprene / styrene block copolymer or polystyrene
Styrene-butadiene-styrene block copolymer
By using a synthetic rubber-based hot-melt adhesive,
Can only improve the productivity of waterproof sealing materials
Instead of sealing concrete products.
Suitable physical properties can be obtained.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating an embodiment of the present invention.

FIG. 2 is a sectional view showing a use mode of the embodiment.

FIG. 3 is a sectional view showing another embodiment of the present invention.

FIG. 4 is a sectional view showing another embodiment of the present invention.

FIG. 5 is a sectional view showing another embodiment of the present invention.

FIG. 6 is a sectional view showing another embodiment of the present invention.

FIG. 7 is a sectional view showing another embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List A Sealing material for waterproofing 1 Sealing member 1A Central portion 1B Both side portions 2 Edge 3 Recess 4 Adhesive 5 Piping pipe 6 Manhole (structure) 6A Mounting hole

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Kunihisa Okada, 691 Maruta, Kazatsuki, Hakata-ku, Fukuoka City Inside Node Water Works Equipment Co., Ltd. Node Water Supply Equipment Co., Ltd. (72) Inventor Hiroshi Shinjo 1-1-18 Kyobashi, Chuo-ku, Tokyo C-I Kasei Co., Ltd. (72) Inventor Kazutaka Kokura 1-1-18 Kyobashi, Chuo-ku, Tokyo CHI Kasei Co., Ltd. (56) References JP-A-59-61327 (JP, U) JP-A-59-22810 (JP, U) JP-A-62-26496 (JP, U) JP-B 63-45701 (JP, B2)

Claims (4)

(57) [Scope of request for utility model registration] 1. A sealing member made of a water-swellable material is provided with a concave portion on the sealing surface with edges left at least on both sides thereof , and an adhesive is provided in the concave portion so as to be lower than the edge portion. When arranging the member at the joint, the edge directly
A sealing material for waterproofing, wherein the sealing material is configured to contact the joint. 2. The edge of the edge has an arc-shaped cross section or
The waterproof sealing material according to claim 1, wherein the sealing material has a triangular shape . 3. The seal member includes at least the concave portion.
Except for the recess-side edge portion forming a waterproof sealing material according to claim 1 or 2 characterized in that it is a composite structure of a water swellable material and the non-aqueous swellable material. 4. The pressure-sensitive adhesive according to claim 1, wherein the pressure-sensitive adhesive is a synthetic rubber hot-melt pressure-sensitive adhesive comprising a styrene / isoprene / styrene block copolymer or a styrene / butadiene / styrene block copolymer. Or
3. The waterproof sealing material according to 3.