JPH1162036A - Sealing material and usage thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve workability by bending a plate-shaped member consisting of foaming element at the middle part in its cross direction so as to be flush with both ends in the cross direction, and fixing the flush side with a hollow part formed inside the bent part. SOLUTION: A plate-shaped member consisting of a foaming element such as rubber or synthetic resin is bent at the middle part in its cross direction, and both end surfaces 1a in the cross direction of the plate-shaped member is made flush to form a sealing material 1. A piece of tape 3 is affixed on both the end surfaces 1a made flush as a result of a hollow part 2 formed at the inside of the bent part, and both the end surfaces 1a are fixed integrally, using the tape 3. The sealing material 1 is provided between structures, and the side where the tape 3 of the sealing material 1 is affixed on one structure is inserted to joint-compress the bent crest part of the sealing material 1 against the other structure. It is thus possible to increase sealing width by compression for higher sealing performance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealing material which is disposed at, for example, a joint in a building structure and which can absorb construction errors between building materials and ensure watertightness, and a method of using the sealing material. .

[0002]

2. Description of the Related Art As a conventional technique of this kind, there are, for example, an expansion joint cover disclosed in Japanese Patent Application Laid-Open No. 8-284271 and a gasket for joints of panels disclosed in Japanese Patent Application Laid-Open No. 9-137519. In the former, a concave portion which is continuous in the length direction is formed on the front and back surfaces of a plate material having a substantially constant thickness (therefore, a cross section along the length direction has a waveform), and fixing members are provided on both sides of the plate material. This fixing member is fixed to each of the two buildings separated from each other that constitute a joint space.

On the other hand, the latter is used as a joint of a building panel, and has both adhesive pieces adhered to the side surface of the panel and a substantially Ω-shaped deformation follower formed between these adhesive pieces and having an opening. And a connecting piece for connecting the edge of the opening and the two adhesive pieces. When the adhesive piece is attached to the joint and both sides of the adhesive piece are compressed, the adhesive piece and the deformation follower are connected to each other.
One cylindrical part is formed.
In addition, this gasket is made of a material made of foam rubber having elasticity.

[0004]

The sealing material generally used for joints of architectural structures is not limited to the above-mentioned conventional example, but may be a regular sealing material having a rectangular string in cross section or an extruded product having various shapes. As is well known. On the other hand, recently, as the weight and thickness of a structure such as a building material forming a building structure have been reduced, the rigidity of the structure tends to decrease. The fixed-shaped sealing material is most widely used mainly because it can be easily processed and inexpensive, but as described above, when the rigidity of the structural body is low, the structural body is formed by the elasticity of the sealing material. Inconveniences such as warpage and opening of joints occur.

In addition, even when the structures are brought close to each other to correct the joints at regular intervals, the adjacent structures are separated from each other due to the elasticity of the sealing material and the joints are opened, so that the assembly of the structures itself becomes impossible. This also occurs, and when such joint opening occurs, the compression ratio of the sealing material decreases, so that the sealing performance naturally decreases. Further, when the sealing surface has a step or an uneven surface, a gap is formed unless the sealing material is compressed to a certain compression ratio or more, and there is a problem that airtightness and watertightness cannot be maintained.

On the other hand, extrudable rubber, synthetic resin, and the like can produce sealing materials of various shapes while reducing compression hardness, but have the disadvantage of low productivity and high cost. Have. In addition, since resin of a liquid raw material such as urethane is difficult to extrude, it must be manufactured one by one using a mold or the like in order to perform molding in various shapes. In this case, productivity is further increased. Therefore, it is very difficult to form a long continuous product.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a low-cost, simple, and continuous production without using a mold by using a plate-shaped sealing material. It is another object of the present invention to provide a sealing material capable of reducing the compression hardness and sufficiently improving the allowable compression range as a standard sealing material.

It is another object of the present invention to provide a method of using a sealing material which can secure sufficient compression hardness with a simple structure and can significantly improve workability on site.

[0009]

According to the sealing material of the present invention and the method of using the sealing material, the sealing material according to the first aspect of the present invention is obtained by bending a plate-shaped body made of a foam at a central portion in a width direction thereof. Then, both end faces in the same width direction are made flush with each other, and the above-mentioned one face is fixed in a state in which a hollow portion is formed inside the bend.

According to a second aspect of the present invention, there is provided a sealing material according to the first aspect, wherein a plurality of the sealing materials are arranged and the sealing materials are fixed to each other.

According to a third aspect of the present invention, in the sealing material, a plurality of plate-like bodies made of foam are alternately bent and deformed in the width direction thereof, and both end faces in the same width direction and a bent top end on the end face side are formed. And the above-mentioned one surface is fixed in a state where a hollow portion is formed inside each bend.

According to a fourth aspect of the present invention, there is provided the sealing material according to any one of the first to third aspects, wherein the one surface is integrally fixed by attaching a tape. Is what it is.

According to a fifth aspect of the present invention, there is provided a sealing material according to any one of the first to third aspects, wherein the one surface is attached to one surface of a double-sided adhesive tape. They are integrally fixed.

According to a sixth aspect of the present invention, in the sealing material, a plurality of plate-like bodies made of a foam are alternately bent and deformed along the width direction, and both end faces in the same width direction and a bent top end on the end face side are formed. In a state where a hollow portion is formed inside each bend, and the opposing surfaces on the inside of the bend are fixed to each other.

According to a seventh aspect of the present invention, there is provided the sealing material according to any one of the first to sixth aspects, wherein a rigid material is attached to the one surface.

According to an eighth aspect of the present invention, in the sealing material according to any one of the first to seventh aspects, the foam is made of rubber or synthetic resin.

[0017] The method of using the sealing material according to claim 9 is as follows.
In a method of using a sealing material when arranging one structure having a concave groove portion adjacent to another structure via a sealing material, a plate-shaped sealing material made of the foamed material is formed at a central portion in a width direction thereof. Bending deformation, arranging both ends in the width direction in grooves of the one structure in a state where a hollow portion can be formed inside the bending, and further removing the other structure from the side where the sealing material is provided. It is characterized by being arranged.

A method of using a sealing material according to a tenth aspect of the present invention is the method of using a sealing material for interposing a sealing material at an joint between adjacent structures. Is bent at the center in the width direction, and the sealing material is inserted into the joint in a state where a hollow portion can be formed inside the bent portion.

[0019]

Embodiments of the present invention will be described below in detail with reference to the drawings. [First Embodiment] FIGS. 1 and 2 show a first embodiment of the present invention. Sealing material 1 in these figures
For example, a plate-shaped body made of a foamed material such as rubber or synthetic resin is bent and deformed at its center in the width direction, and both end surfaces 1a in the width direction of the plate-shaped body are flush with each other. The tape 3 is applied to both end surfaces 1a which are flush with each other in a state where
Are attached, and the tape 3 integrally fixes the both end faces 1a.

The sealing material 1 is applied to the joints 6 when the structures 4 and 5 are arranged adjacent to each other as shown in FIG. In the first embodiment, each of the structures 4 and 5 is a building material having a rectangular cross section, and a sealing material 1 is provided between the structures 4 and 5.
Is interposed. That is, as shown in FIG. 2A, for example, after the side of the sealing material 1 to which the tape 3 is adhered is adhered to the structure 4, the bent top end of the sealing material 1 (opposite to both end surfaces 1a). The structure 5 is joined from the side 1b.

When the structure 5 is joined, as shown in FIG. 2 (b), a compressive force is transmitted from the structure 5 to the sealing material 1, whereby the sealing material 1 is bent at its bent top end 1b.
Is slightly compressed, and the hollow portion 2 expands in a substantially isosceles triangular shape with the both end surfaces 1a adhered to the structure 4 as a base point. When the structure 5 is further joined from this state,
As shown in FIG. 2 (c), the sealing material 1 is interposed in a state where the hollow portion 2 spreads in a substantially equilateral triangular shape and the bent top end portion 1b is substantially flat.

As described above, since the sealing material 1 is an extremely simple manufacturing method in which the plate 3 is bent and deformed and the tape 3 is adhered, it is possible to mass-produce the sealing material 1 at low cost. Ensure the minimum compression required for sealing,
Further, the seal width is increased by the compression to improve the sealability, and furthermore, the force in the compression direction is easily dispersed in the width direction, so that the repulsive force of the seal material is reduced, whereby the structure 4
5 warpage and joint opening are prevented.

The above-mentioned bonding of the sealing material 1 to the structure 4 may be performed by using an adhesive suitable for the material of the structure 4 or other suitable bonding means. The adhesive tape 3 can be a double-sided tape. In this case, there is an advantage that the bonding operation can be performed extremely easily.

[Second Embodiment] FIG. 3 shows a second embodiment. The seal material 11 shown in this figure is obtained by arranging a plurality of (three in this example) the seal materials 1 in the first embodiment.
Both end surfaces 1a of each sealing material 1 are further flushed, and one tape 3 is adhered to each end surface 1a. In this sealing material 11, the space between the adjacent sealing materials 1 may or may not be fixed. In addition, each sealing material 1 does not necessarily need to be the same material, and a plurality of materials can be appropriately combined.

According to this sealing material 11, it is particularly suitable to be applied to sealing a wide sealing surface, and a plurality of sealing surfaces are secured by a plurality of bent top ends 1b. 11, the roles of the secondary and tertiary seals can be used together.

[Third Embodiment] FIG. 4 shows a third embodiment. The sealing material 12 shown in this figure is obtained by bending and deforming one plate-like body alternately (five times in this example) along the width direction (the cross section in the width direction is corrugated). 1a and the bent top end 12a on the same side as both ends 1a are flush with each other, and a hollow portion 2 is provided inside each bend.
The tape 3 is adhered to both end surfaces 1a and the bent top end 12a in a state where is formed.

The sealing material 12 is also the same as the sealing material 1 described above.
As in the case of 1, it is particularly suitable to be applied when sealing a wide sealing surface, and a plurality of sealing surfaces are secured by a plurality of bent top ends. Roles can be used together.

[Fourth Embodiment] FIGS. 5 and 6 show a fifth embodiment. The sealing material 13 shown in these figures is the same as the sealing material 1 described in the first embodiment, except that the tape 3 is not adhered to both end surfaces 1a, and the opposing surfaces inside the bend are formed in a state where the hollow portion 2 is formed. Is fixed by heat fusion.

Such a sealing material 13 is applied when joining the structures 7 and 8 as shown in FIG. That is,
The structure 7 has a groove 7a having a rectangular cross section, while the structure 8 has a groove 8a having a trapezoidal cross section. The grooves 7a of the structures 7, 8 face each other while the grooves 7a face each other. , 8a in which the sealing material 13 is interposed.

With respect to the structure 7, the groove 7 of the structure 7
A side where both end surfaces 1a of the sealing material 13 are flush with each other is disposed in a, and the structure 8 is joined to the bent top end 1b side of the sealing material 13 from the groove 8a side. Thus, the same effects as those of the above-described sealing members 1, 11, and 12 can be obtained, and in particular, according to the sealing member 13, the rear insertion can be performed between the joint portions 6.

[Fifth Embodiment] FIG. 7 shows a fourth embodiment. Similar to the sealing material 12 described in the third embodiment, the sealing material 14 shown in this figure is obtained by alternately forming a single plate-like body along the width direction (however, in this example, three times). ) Bending deformation, both end surfaces 1a and both end portions 1a
The tape 3 is made by heat-sealing the opposing surfaces inside the bend without adhering the tape 3 to the bent top end 14a on the same side as that of FIG.

According to the sealing member 14, in addition to the effect of the sealing member 13 described above, a secondary sealing effect can be achieved. In the seal members 13 and 14 in the fourth and fifth embodiments, the opposing surfaces on the inside of the bend may be fixed by an adhesive or the like without being limited to the thermal fusion. In addition, each of the above-described sealing materials 1, 11 to 14 may have a rigid material attached to one surface thereof.

The following findings were obtained for each of the sealing materials 1, 11 to 14 described above, as compared with the conventional fixed sealing materials (width 10 mm, height 14 mm). That is, FIG. 8 is a diagram showing the difference in compression hardness between the sealing material according to the present invention and the conventional fixed-shaped sealing material. Here, a sealing material having a compression hardness of 20 g / cm ² or more is used. And the compressive force during joining is up to 6
It compares the sealable range of each of the structures when a structure of 0 g / cm ² is constructed. When using the conventional fixed sealing material, the range of sealable joint width is narrow due to the restriction on compression hardness, but the sealing material according to the present invention is about three times as large as the conventional fixed sealing material. It can be seen that the above sealable range can be secured.

The sealing materials 1, 11 to 14 are remarkably simple in manufacturing method, especially in the case of a tube-shaped sealing material, are easy to mass-produce and form a continuous product, and have the minimum necessary for sealing. There is an advantage that the minimum compression is secured, the seal width is increased by the compression, and the force in the compression direction is easily dispersed in the width direction.

In the present embodiment, the description has been given mainly of the compression deformation when interposed between the joints between the two structures. However, for example, the interposition between the underground block walls 9 as shown in FIG. It is, of course, possible to use them to ensure their watertightness, and it goes without saying that the sealing function can be sufficiently achieved even for such purposes.

[0036]

As is apparent from the above description, according to the sealing material of the present invention, mass production can be realized at a low cost by an extremely simple manufacturing method by using a plate-like body made of a foam. The minimum compression required for the sealability can be secured, and the compression increases the seal width to improve the sealability, significantly improves the sealable range, and further reduces the force in the compression direction in the width direction. Therefore, the effect of reducing the repulsive force of the sealing material, reducing the load on the structure, and preventing warpage, joint opening and collapse of the structure can be achieved.

Further, according to the method of using the sealing material of the present invention, a sufficient compression hardness can be ensured with a simple structure.
There is an effect that the on-site workability can be significantly improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a sealing material described in a first embodiment.

FIGS. 2A and 2B are explanatory diagrams showing a state of a sealing material when sealing a joint using the sealing material of FIG. 1; FIG. 2A is a state before compression; FIG. (C) is the end of compression.

FIG. 3 is a cross-sectional view illustrating a sealing material described in a second embodiment.

FIG. 4 is a cross-sectional view showing a sealing material described in a third embodiment.

FIG. 5 is a cross-sectional view illustrating a sealing material described in a fourth embodiment.

FIG. 6 is an explanatory diagram when the joint is sealed using the sealing material of FIG. 5;

FIG. 7 is a cross-sectional view showing a sealing material described in a fifth embodiment.

FIG. 8 is a graph showing the relationship between the joint hardness and the compression hardness of the sealing material of the present invention and the conventional fixed sealing material.

FIG. 9 is an explanatory view showing a block wall of an underground structure shown as an example when the sealing material of the present invention is used for the purpose of ensuring watertightness.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 11-14 Seal material 1a End surface 1b, 12a Bent top end 2 Hollow part 3 Tape 4, 5, 7, 8 Structure 7a Groove

Claims (10)

[Claims] 1. A plate-like body made of a foam is bent and deformed at a center portion in the width direction, both end surfaces in the same width direction are flush with each other, and further, a hollow portion is formed inside the bend, and the plate-like body is on one side. Sealing material. 2. The seal material according to claim 1, wherein a plurality of the seal materials are arranged and the seal materials are fixed to each other. 3. A plate-shaped body made of a foam is bent and deformed alternately in the width direction thereof, and both end faces in the same width direction and the bent top end on the end face side are flush with each other. A sealing material having the above-mentioned one surface fixed in a state where a hollow portion is formed inside. 4. The one-side surface is integrally fixed by attaching a tape.
The sealing material according to any one of the above. 5. The sealing material according to claim 1, wherein the one surface is integrally fixed by attaching one surface of a double-sided adhesive tape. 6. A plate-like body made of a foam is bent and deformed alternately in the width direction thereof so that both end faces in the same width direction and the bent top end on the end face side are flush with each other. A sealing material in which opposed surfaces on the inside of the bend are fixed to each other with a hollow portion formed inside. 7. The sealing material according to claim 1, wherein a rigid material is adhered to the one surface. 8. The sealing material according to claim 1, wherein the foam is made of rubber or synthetic resin. 9. A method of using a sealing material for arranging one structure having a concave groove portion adjacent to another structure with a sealing material interposed therebetween, the method comprising: It is bent at the center in the width direction, and both ends in the width direction are arranged in the groove of the one structure in a state where a hollow portion can be formed inside the bend, and further from the side where the sealing material is arranged. A method for using a sealing material, wherein the other structure is provided. 10. A method of using a sealing material for interposing a sealing material between joints between adjacent structures, wherein the plate-shaped sealing material made of a foam is bent and deformed at a central portion in the width direction. The method of using a sealing material, wherein the sealing material is inserted into the joint portion in a state where a hollow portion can be formed inside the bent portion.