JP7096872B2 - Sealing material and structure - Google Patents

Description

The present invention relates to a sealing material that seals water between adherends arranged opposite to each other and a structure in which such a sealing material is provided on the adherend.

For example, for waterways such as sewers, communication lines, pipelines such as electric wires, underpasses, and tunnels buried in the ground, structures called tubular box culverts with both ends opened by concrete are used. .. When the above-mentioned waterway or the like is constructed using such a structure, the structures are arranged in the penetrating direction of the structure. A sealing material that swells when water is absorbed, as disclosed in Patent Documents 1 to 3 below, is provided between the structures adjacent to each other in the penetrating direction, and water leaks from between the structures. The passage of water such as is suppressed.

For the main body portion of such a sealing material, for example, a material that swells by absorbing water is used. When the main body portion of the sealing material absorbs water and swells, the main body portion enters into the minute recesses of the structure, thereby increasing the water blocking property between the structures.

By the way, in the above-mentioned structure, workability at the time of construction is improved by attaching a sealing material to the end face on the penetration direction side of the structure in advance. However, if the sealing material is attached to the end face on the penetration direction side of the structure, the main body portion of the sealing material absorbs rainwater and swells in rainy weather.

On the other hand, for indoor storage of the structure, the structure must be transported between the indoor and the construction site. In particular, in order to store a large concrete structure such as a box culvert indoors, a building with a large floor area and a high ceiling is required, and moving the concrete structure also requires a large heavy machine, resulting in high cost. It leads to. In addition, in order to prevent water from being exposed to water using a sheet or the like, it is necessary to cover or remove the sheet from the structure. Further, in the configuration in which the surface of the main body portion of the sealing material is coated, it takes time to absorb water in the main body portion, so that it takes time to secure water stoppage between the structures after construction.

That is, regardless of the method, workability until construction is reduced. On the other hand, since the sealing material disclosed in Patent Documents 1 to 3 has a structure in which the surface of the main body portion of the sealing material is coated, rainwater is supplied before storage and movement. Can be suppressed. However, after construction, it takes time to ensure water stoppage between structures due to the presence of the coating film on the seal portion.

Japanese Unexamined Patent Publication No. 60-217286 Japanese Unexamined Patent Publication No. 61-34087 Japanese Unexamined Patent Publication No. 2001-311069

In consideration of the above facts, it is an object of the present invention to obtain a sealing material and a structure that can suppress the deterioration of workability of construction as much as possible without deteriorating the performance of the sealing material main body portion.

The sealing material according to claim 1 is provided on the sealing material main body on a predetermined direction orthogonal to the longitudinal direction of the sealing material main body and the sealing material main body that swells by absorbing water, and the sealing material is provided on the sealing material main body. Of the sticking member to be attached to the first adherend arranged on the predetermined direction side of the main body and the surface on the direction orthogonal to the longitudinal direction of the sealing material main body, at least the surface on the predetermined direction side. It is provided with a covering member configured to cover the removed surface to restrict the passage of water from the outside to the sealing material main body and to be removable from the sealing material main body .

In the sealing material according to claim 1, the sticking member is provided on the surface of the sealing material main body on the side in a predetermined direction orthogonal to the longitudinal direction of the sealing material main body. This sticking member is stuck to the first adherend, whereby the sealing material is provided on the first adherend.

Of the surfaces of the sealing material main body on the direction orthogonal to the longitudinal direction of the sealing material main body, at least a portion excluding the above-mentioned surface on the predetermined direction side is covered with the covering member. With this covering member removed from the sealing material body, the second adherend is arranged on the side opposite to the first adherend with the present sealing material interposed therebetween, and is on the side of the sealing material in the second adherend. The surface is abutted against the sealing material body. When water is absorbed by the sealing material main body in this state, the sealing material main body is inflated, and the minute recesses on the surface of the second adherend on the sealing material side are filled by the sealing material main body. As a result, it is possible to obtain a sealing property between the first adherend and the second adherend, and further, the surface of the first adherend and the second adherend to receive from the sealing material main body by swelling. The pressure becomes high, and the sealing property between the adherends is greatly improved.

As described above, of the surfaces orthogonal to the longitudinal direction of the sealing material body, the surfaces excluding at least the surface on the predetermined direction side are covered with the covering member, thereby sealing from the outside of the covering member. The passage of water to the material body side is restricted by the covering member. As a result, it is possible to prevent the sealing material body from inadvertently absorbing water and swelling. As a result, the structure provided with this sealing material can be stored indoors or outdoors (outdoors) without covering the structure with a sheet or the like, and the workability of construction using such a structure can be achieved. Can be suppressed.

The sealing material according to claim 2 is the sealing material according to claim 1, wherein the covering member is formed of a thin-walled member made of a material that does not allow water to permeate.

According to the sealing material according to claim 2, since the covering member is formed of a thin-walled member made of a material that does not allow water to permeate, it does not permeate even if water adheres and water is absorbed by the sealing material body. Can be restricted.

The sealing material according to claim 3 is the sealing material according to claim 1 or 2, wherein the covering member is the covering member along the longitudinal direction of the sealing material main body by applying a load to the covering member. It is equipped with a break-inducing part that induces breakage.

According to the sealing material according to claim 3, the covering member includes a fracture-inducing portion, and when a load (for example, a tensile load or a shear load) is applied to the covering member, the covering member is subjected to the fracture-inducing portion. Breaking is induced and the covering member is broken along the longitudinal direction of the sealing material body. As a result, the covering member is easily removed to sufficiently expose the surface of the sealing material body on the direction orthogonal to the longitudinal direction of the sealing material body, excluding at least the surface on the predetermined direction side. be able to.

The sealing material according to claim 4 is the sealing material according to claim 3, wherein the fracture-inducing portion has a lower mechanical strength than a portion of the covering member other than the fracture-inducing portion.

According to the sealing material according to claim 4, the fracture-inducing portion has a lower mechanical strength than the portion of the covering member other than the fracture-inducing portion. Therefore, when a load (for example, a tensile load or a shear load) is applied to the covering member, the stress is concentrated on the fracture-inducing portion, and the covering member can be induced to break in the fracture-inducing portion.

The sealing material according to claim 5 is the sealing material according to any one of claims 1 to 4, wherein the covering member is more than a direction intersecting the longitudinal direction of the sealing material main body. It has high tearability in the longitudinal direction of the sealing material body.

According to the fifth aspect of the present invention, the covering member has higher tearability in the longitudinal direction of the sealing material body than in the direction intersecting the longitudinal direction of the sealing material body. Therefore, when a load (for example, a tensile load or a shear load) is applied to the covering member, the covering member can continuously break in the longitudinal direction of the sealing material main body. As a result, the covering member is easily removed to sufficiently expose the surface of the sealing material body on the direction orthogonal to the longitudinal direction of the sealing material body, excluding at least the surface on the predetermined direction side. be able to.

The sealing material according to claim 6 is the sealing material according to claim 5, wherein the covering member is formed by stretching, so that the sealing material body is easily torn in the longitudinal direction.

According to the sealing material according to claim 6, the covering member is formed by a stretching process, whereby the covering member is provided with easy tearability in the longitudinal direction of the sealing material main body. As a result, the covering member can be continuously broken in the longitudinal direction of the sealing material main body.

The sealing material according to claim 7 is the sealing material according to any one of claims 1 to 6, wherein at least a part of the covering member is integrally connected to the sealing material main body.

According to the sealing material according to claim 7, since at least a part of the covering member is integrally connected to the sealing material main body, for example, when the sealing material is attached to the first adherend, the covering member is attached. Can be suppressed from being displaced with respect to the sealing material body.

The sealing material according to claim 8 is the sealing material according to claim 7, wherein the covering member is formed of linear low-density polyethylene, and the covering member is heated to melt into the sealing material main body. Be worn.

According to claim 8, the covering member is made of linear low density polyethylene. Such a covering member formed of linear low-density polyethylene is fused to the sealing material main body by heating and is integrally connected to the sealing material main body. Further, since the covering member is formed of linear low-density polyethylene, the fused portion of the covering member with the sealing material main body can be easily peeled off from the sealing material main body.

The structure according to claim 9 is the first to which the sealing material according to any one of claims 1 to 8 and the sticking member of the sealing material are attached and the sealing material is attached. It is equipped with one adherend.

According to the structure according to claim 9, a sticking member is provided on the surface of the sealing material main body of the sealing material on the predetermined direction side, and the sealing material is stuck to the first adherend by the sticking member. Therefore, the surface of the sealing material body on the predetermined direction side is covered with the first adherend. Further, among the surfaces on the direction orthogonal to the longitudinal direction of the sealing material main body, the surfaces excluding at least the surface on the predetermined direction side are covered with the covering member, whereby the sealing material main body becomes the longitudinal surface of the sealing material main body. It is possible to prevent inadvertent absorption of water from the side orthogonal to the direction and swelling.

Therefore, even if the structure is stored outdoors (outdoors), it is possible to prevent the sealing material body from absorbing rainwater or the like and swelling. As a result, it is possible to suppress a decrease in workability of construction using this structure.
The sealing material according to claim 10 is provided on the sealing material main body in a predetermined direction orthogonal to the longitudinal direction of the sealing material main body and the sealing material main body which swells by absorbing water, and the sealing material is provided. Of the sticking member to be attached to the first adherend arranged on the predetermined direction side of the main body and the surface on the direction orthogonal to the longitudinal direction of the sealing material main body, at least the surface on the predetermined direction side. A covering member that covers the removed surface and restricts the passage of water from the outside to the sealing material main body is provided, and the covering member comprises the sealing rather than the direction intersecting the longitudinal direction of the sealing material main body. It has a high tearability in the longitudinal direction of the material body, and the tearability is imparted by being formed by stretching.

As described above, in the present invention, it is possible to suppress a decrease in workability of construction.

It is a perspective view of the sealing material which concerns on 1st Embodiment. It is sectional drawing of the structure which concerns on 1st Embodiment along the 2-2 line of FIG. It is a cross-sectional view corresponding to FIG. 2 which shows the attachment state of the 2nd adherend, (B) is the enlarged view of the part of the circle A in (A), (C) is the sheet material body absorbs water. It is a figure corresponding to (B) which shows the swollen state. 2A is a cross-sectional view of the structure according to the second embodiment, where FIG. 2A is a cross-sectional view corresponding to FIG. 2 and FIG. 2B is a cross-sectional view corresponding to FIG. 3A. (A) and (B) are cross-sectional views corresponding to FIG. 4 showing a modification of the method of fixing the covering member. It is sectional drawing corresponding to FIG. 2 of the structure which concerns on 3rd Embodiment. It is sectional drawing corresponding to FIG. 2 of the structure which concerns on 4th Embodiment. It is sectional drawing corresponding to FIG. 2 of the structure which concerns on 5th Embodiment. It is sectional drawing corresponding to FIG. 2 of the structure which concerns on 7th Embodiment. It is sectional drawing corresponding to FIG. 2 of the structure which concerns on 8th Embodiment. It is a perspective view of the sealing material which concerns on 9th Embodiment. It is sectional drawing of the structure which concerns on 9th Embodiment along line 12-12 of FIG. It is a perspective view of the sealing material which concerns on 10th Embodiment. In the cross-sectional view of the structure according to the tenth embodiment along the line 14-14 of FIG. 13, the circle A in the figure is an enlarged cross-sectional view of the circle B in the figure. In the cross-sectional view corresponding to FIG. 14 of the structure according to the eleventh embodiment, the circle A in the figure is an enlarged cross-sectional view of the circle B in the figure. In the cross-sectional view corresponding to FIG. 14 of the structure according to the twelfth embodiment, the circle A in the figure is an enlarged cross-sectional view of the circle B in the figure. In the cross-sectional view corresponding to FIG. 14 of the structure according to the thirteenth embodiment, the circle A in the figure is an enlarged cross-sectional view of the circle B in the figure. In the cross-sectional view corresponding to FIG. 14 of the structure according to the fourteenth embodiment, the circle A in the figure is an enlarged cross-sectional view of the circle B in the figure. In the cross-sectional view corresponding to FIG. 14 of the structure according to the fifteenth embodiment, the circle A in the figure is an enlarged cross-sectional view of the circle B in the figure. In the cross-sectional view corresponding to FIG. 14 of the structure according to the sixteenth embodiment, the circle A in the figure is an enlarged cross-sectional view of the circle B in the figure. In the cross-sectional view corresponding to FIG. 14 of the structure according to the seventeenth embodiment, the circle A in the figure is an enlarged cross-sectional view of the circle B in the figure. In the cross-sectional view corresponding to FIG. 14 of the structure according to the eighteenth embodiment, the circle A in the figure is an enlarged cross-sectional view of the circle B in the figure. In the cross-sectional view corresponding to FIG. 14 of the structure according to the nineteenth embodiment, the circle A in the figure is an enlarged cross-sectional view of the circle B in the figure. In the cross-sectional view corresponding to FIG. 14 of the structure according to the twentieth embodiment, the circle A in the figure is an enlarged cross-sectional view of the circle B in the figure.

Next, each embodiment of the present invention will be described with reference to the drawings of FIGS. 1 to 24. In each figure, the arrow L appropriately shown indicates one in the longitudinal direction of the sealing material 10, the arrow W indicates one in the width direction of the sealing material 10, and the arrow T indicates one in the thickness direction of the sealing material 10. show. Further, in explaining each of the following embodiments, the same parts as those of the above-described embodiments are given the same reference numerals as those of the above-described embodiments, and the detailed description thereof will be described. Is omitted.

<Structure of the first embodiment>
As shown in FIGS. 1 and 2, the sealing material 10 according to the first embodiment includes a sealing material main body 12. The sealing material main body 12 is formed of, for example, a water-absorbing and swellable polyurethane foam, which is one aspect of the water-absorbing and swelling foamed resin material. The water-absorbing and swellable foamed resin material that forms the sealing material main body 12 containing the water-absorbing and swelling polyurethane foam is foam-molded by mixing and dispersing a synthetic resin material having water-absorbing and swelling properties on a base material formed of the synthetic resin material. Formed by doing.

As the above-mentioned base material, a polyurethane foam is used in the present embodiment. Examples of synthetic resin materials applied to the base material other than polyurethane foam include acrylic rubber, butyl rubber, silicon rubber, urethane rubber, butadiene rubber, isoprene rubber, chloroprene rubber, polybutene rubber, acrylate-butadiene rubber, and styrene. -Synthetic of butadiene rubber, acrylonitrile-butadiene rubber, acrylonitrile-butadiene-styrene rubber, styrene-isoprene rubber, acrylonitrile-chloroprene rubber, styrene-chloroprene rubber, butadiene-styrene block copolymer, styrene-butadiene-styrene copolymer, etc. Rubber; Styrene-based thermoplastic elastomers such as styrene-butadiene-styrene copolymer, styrene-isoprene-styrene copolymer, styrene-hydrogenated polyolefin-styrene copolymer, ethylene-vinyl acetate copolymer, non-polyester, etc. There are foams and foams, and basically, any material having sufficient strength and restoring force as a joint material when used as a sealing material can be widely applied without being limited to the above example. ..

Further, as the water-absorbing and swelling synthetic resin material mixed and dispersed in the above-mentioned base material, acrylic-based water-absorbent resin such as crosslinked polyacrylic acid, starch-based water-absorbent resin, acrylic-starton-based water-absorbent resin, and urethane-based water-absorbent resin. Sexual resin or the like is used.

The sealing material main body 12 has, for example, a long shape. The longitudinal direction of the sealing material main body 12 is the longitudinal direction of the sealing material 10. As shown in FIG. 2, the cross-sectional shape of the sealing material main body 12 cut in a direction orthogonal to the longitudinal direction of the sealing material 10 is rectangular in the present embodiment.

A covering member 14 is provided on the sealing material main body 12. The covering member 14 is formed in a thin sheet shape (including a film shape, a tape shape, etc.) by a material that does not allow water to pass through. The covering member 14 includes a first covering portion 16, a second covering portion 18, and a third covering portion 20. The first covering portion 16 faces the surface of the sealing material main body 12 on one side in the thickness direction (arrow T direction of FIGS. 1 and 2) in the thickness direction of the sealing material main body 12, and is opposed to the sealing material main body 12. One surface of the main body 12 in the thickness direction is covered with the first covering portion 16.

The second covering portion 18 is continuously formed from both ends of the sealing material main body 12 in the first covering portion 16 in the width direction (directions of arrows W in FIGS. 1 and 2 and vice versa). One second covering portion 18 faces the surface of the sealing material main body 12 in the width direction on one side (arrow W direction in FIGS. 1 and 2) in the width direction of the sealing material main body 12, and the other. The second covering portion 18 faces the surface of the sealing material main body 12 in the width direction of the other side (opposite direction to the arrow W in FIGS. 1 and 2) of the sealing material main body 12. Both sides of the sealing material main body 12 in the width direction are covered with these second covering portions 18.

The third covering portion 20 is formed continuously from the end portion of each second covering portion 18 opposite to the first covering portion 16. One third covering portion 20 is in the thickness direction of the sealing material main body 12 in the width direction of the sealing material main body 12 on the other side surface in the thickness direction of the sealing material main body 12 with respect to one end and its vicinity. Facing each other. On the other hand, the other third covering portion 20 is a sealing material main body 12 with respect to the other end portion in the width direction of the sealing material main body 12 on the surface on the other side in the thickness direction of the sealing material main body 12 and a portion in the vicinity thereof. Facing in the thickness direction of. The portion of the sealing material main body 12 on the other side surface in the thickness direction excluding the portion on the widthwise central side of the sealing material main body 12 is covered with these third covering portions 20.

An adhesive portion 22 as a sticking means is provided on the other side of the sealing material main body 12 in the thickness direction. The adhesive portion 22 is configured to include, for example, a thin sheet-like (including film-like, tape-like, etc.) base and an adhesive applied to both surfaces of the base in the thickness direction. The surface of the adhesive portion 22 on one side in the thickness direction (direction of arrow T in FIG. 1 and the like) is opposed to the surface of the sealing material body 12 on the other side in the thickness direction (direction opposite to arrow T in FIG. 1 and the like). There is. One surface of the adhesive portion 22 in the thickness direction is attached to the third coated portion 20 of the covering member 14 by the adhesive due to the adhesiveness of the adhesive. Further, between the two third covering portions 20, one surface of the adhesive portion 22 in the thickness direction is attached to the other surface of the sealing material main body 12 in the thickness direction due to the adhesiveness of the adhesive.

Further, for example, a peeling member (not shown) is provided on the surface of the adhesive portion 22 on the other side in the thickness direction. The peeling member is, for example, a thin sheet (including a film, a tape, etc.).

When the sealing material 10 is stored as a single body (that is, in a state where the sealing material 10 is not attached to the first adherend 24 described later), such a peeling member has the thickness of the adhesive portion 22. Direction It is stored with a peeling member provided on the other side surface. In the configuration in which such a peeling member is provided, the surface of the adhesive portion 22 on the other side in the thickness direction of the adhesive portion 22 is the present sealing material in a state where the peeling member of the adhesive portion 22 of the sealing material 10 is peeled from the adhesive portion 22. Together with 10, it is attached to the first adherend 24 constituting the structure 26. Since the adhesive portion 22 is protected by the peeling member until immediately before the construction, it is possible to prevent foreign matter from adhering to the adhesive.

The first adherend 24 is formed of, for example, concrete, metal, or the like. For example, if the sealing material 10 is used for a seam portion of a segment in a tunnel such as a railway or a road, the first adherend is formed. 24 and the second adherend 28 described later correspond to the above segment. The structure 26 is a first adherend 24 to which the sealing material 10 is attached, and the structure 26 is stored in this state.

<Actions and effects of the first embodiment>
The sealing material 10 is used as a seam of a segment such as a railway tunnel, a road tunnel, a rainwater storage pipe, a seam of a hume pipe, a box culvert, etc. It will be used.

As shown in FIG. 3A, the second adherend 28 is arranged on the opposite side of the sealant 10 from the first adherend 24 in the structure 26. The second adherend 28 is formed of, for example, concrete, metal, or the like.

When the second adherend 28 is arranged on the side of the structure 26 opposite to the first adherend 24 of the sealant 10, both second covering portions of the covering member 14 of the sealing material 10 are arranged. The portion on one side in the thickness direction and the first covering portion 16 from the end portion on the other side in the thickness direction of the sealing material 10 in 18 are removed from the sealing material main body 12. As a result, most of the surface of the sealing material body 12 on one side in the thickness direction and most of the surfaces of the sealing material body 12 on both sides in the width direction are exposed. In this state, one of the surface of the sealing material 10 on the second adherend 28 on the other side (sealing material 10 side) in the thickness direction and one of the surfaces of the sealing material main body 12 on the one side in the thickness direction of the sealing material 10 It is pressed against the other.

When the first adherend 24 and the second adherend 28 are in pressure contact with each other (shown in FIGS. 3A and 3B) and moisture is absorbed by the sealing material body 12, the sealing material is used. The body 12 is inflated. As shown in FIG. 3C, the unevenness of the surface of the second adherend 28 on the other side in the thickness direction (sealing material 10 side) due to the swelling of the sealing material body 12 in this way. The sealing material body 12 enters the recess. As a result, a fluid such as water flows between the first adherend 24 and the second adherend 28 from one side in the width direction of the sealing material body 12 to the other, or from the other side in the width direction of the sealing material body 12. Can be effectively suppressed (water stoppage can be improved).

By the way, the sealing material main body 12 of the present sealing material 10 swells by absorbing water as described above. Here, in the state up to the structure 26, one side surface of the sealing material body 12 of the sealing material 10 in the thickness direction is covered with the first covering portion 16 of the covering member 14, and both sides of the sealing material body 12 in the width direction. The surface of is covered by the second covering portion 18 of the covering member 14. Therefore, in this state, it is possible to effectively suppress the absorption of water into the sealing material main body 12 from one side in the thickness direction and both sides in the width direction of the sealing material main body 12. Therefore, for example, the structure 26 can be stored in the open air (outdoors), and even in such an open-air storage, it is not necessary to take measures to prevent water exposure such as covering the structure 26 with a sheet.

<Second embodiment>
As shown in FIG. 4A, the sealing material 40 according to the second embodiment includes a covering member 42 that replaces the covering member 14 of the sealing material 10 according to the first embodiment. The covering member 42 includes a fourth covering portion 44 that replaces the third covering portion 20 in the covering member 14. The fourth covering portion 44 is provided on both sides of the sealing material 40 in the width direction.

The fourth covering portion 44 on one side in the width direction of the sealing material 40 is located on the other side in the thickness direction from the end opposite to the first covering portion 16 of the second covering portion 18 on one side in the width direction of the sealing material 40. It extends to the adhesive portion 22 and faces the adhesive portion 22 on one side in the width direction of the adhesive portion 22. On the other hand, the fourth covering portion 44 on the other side in the width direction of the sealing material 40 is thick from the end opposite to the first covering portion 16 of the second covering portion 18 on the other side in the width direction of the sealing material 40. It extends to the other side in the longitudinal direction and faces the adhesive portion 22 on the other side in the width direction of the adhesive portion 22.

As shown in FIG. 4B, the second adherend 28 is arranged on the side of the structure 46 opposite to the first adherend 24 of the sealing material 40. The second adherend 28 is formed of, for example, concrete, metal, or the like.

The sealing material 40 having such a structure and the structure 46 in which the sealing material 40 is provided on the first adherend 24 can basically obtain the same effect as that of the first embodiment. ..

That is, the covering member may cover one side surface in the thickness direction and both side surfaces in the width direction of the sealing material main body 12. Therefore, for example, the partial arrangement position on the side opposite to the first covering portion 16 via the second covering portion 18 in the covering member is not particularly limited, and is via the second covering portion 18 in the covering member. The portion on the opposite side of the first covering portion 16 may not be provided.

FIG. 5A shows a modified example of the second embodiment. The fourth covering portion 44 on one side in the width direction of the sealing material 40 is continuously formed from the end portion of the second covering portion 18 on one side in the width direction of the sealing material 40 opposite to the first covering portion 16. Has been done. One third covering portion 44 is in the thickness direction of the sealing material main body 12 in the width direction of the sealing material main body 12 on the other side surface in the thickness direction of the sealing material main body 12 with respect to one end and its vicinity. It is provided. On the other hand, the other third covering portion 44 is a sealing material main body 12 with respect to the other end portion in the width direction of the sealing material main body 12 on the surface on the other side in the thickness direction of the sealing material main body 12 and a portion in the vicinity thereof. It is provided in the thickness direction of. At this time, the covering portion 44 may be attached to at least a part of the adhesive portion 22, but the covering portion 44 covers the entire surface of the adhesive portion 22 in order to prevent foreign matter from adhering to the adhesive portion 22. Is more preferable.

FIG. 5B shows a modified example of the second embodiment. The fourth covering portion 44 on one side in the width direction of the sealing material 40 is continuously formed from the end portion of the second covering portion 18 on one side in the width direction of the sealing material 40 opposite to the first covering portion 16. Has been done. One third covering portion 44 is in the thickness direction of the sealing material main body 12 in the width direction of the sealing material main body 12 on the other side surface in the thickness direction of the sealing material main body 12 with respect to one end and its vicinity. It is provided. On the other hand, the other third covering portion 44 is a sealing material main body 12 with respect to the other end portion in the width direction of the sealing material main body 12 on the surface on the other side in the thickness direction of the sealing material main body 12 and a portion in the vicinity thereof. It is provided in the thickness direction of. The portion of the sealing material main body 12 on the other side surface in the thickness direction excluding the portion on the widthwise central side of the sealing material main body 12 is covered with these second covering portions 18.

<Third embodiment and fourth embodiment>
As shown in FIG. 6, the sealing material 52 of the structure 50 according to the third embodiment includes a sealing material main body 54 instead of the sealing material main body 12 of the sealing material 10 according to the first embodiment. ing. The cross-sectional shape of the sealing material main body 54 obtained by cutting the sealing material main body 54 in a direction orthogonal to the longitudinal direction of the sealing material main body 54 is such that the widthwise dimension of one side surface in the thickness direction is the other side in the thickness direction. It has a trapezoidal shape shorter than the widthwise dimension of the surface.

On the other hand, as shown in FIG. 7, the sealing material 62 of the structure 60 according to the fourth embodiment includes a sealing material main body 64 instead of the sealing material main body 12 in the first embodiment. The cross-sectional shape of the sealing material main body 64, in which the sealing material main body 64 is cut in a direction orthogonal to the longitudinal direction of the sealing material main body 64, is a substantially elliptical shape cut at an intermediate portion in the short axis direction (arrow T direction in FIG. 7). It has a semi-cylindrical shape.

Further, the sealing material 62 includes a covering member 66 that replaces the covering member 14 in the first embodiment. The first covering portion 16 of the covering member 66 is curved following the surface of the sealing material 62 on one side in the thickness direction of the sealing material main body 64. Further, the covering member 66 does not include the second covering portion 18, and the third covering portion 20 is continuously formed from each of both ends of the sealing material 62 in the first covering portion 16 in the thickness direction.

The sealing materials 52, 62 having such a configuration and the structures 50, 60 in which the sealing materials 52, 62 are provided on the first adherend 24 are basically the same as those in the first embodiment. The effect can be obtained.

As described above, the sealing material main body of the sealing material may be, for example, a long shape, and the cross-sectional shape of the sealing material main body cut in a direction orthogonal to the longitudinal direction thereof is not particularly limited.

<Fifth Embodiment>
As shown in FIG. 8, the sealing material 72 of the structure 70 according to the fifth embodiment includes two covering members 14. These covering members 14 overlap each other in the thickness direction of each covering member 14 itself. Further, each of the covering members 14 includes a first covering portion 16, a second covering portion 18, and a third covering portion 20. When the second adherend 28 is pressed against the sealing material 72 attached to the first adherend 24, the thickness of each of the first covering portions 16 and both second covering portions 18 of both covering members 14 The portion on the other side in the wedge direction is removed from the sealing material main body 12. As a result, most of the surface on one side of the sealing material body 12 in the thickness direction and most of the surfaces on both sides in the width direction of the sealing material body 12 are exposed, and the other side in the thickness direction of the second adherend 28 ( One of the surface of the sealing material 72) and the surface of the sealing material body 12 on one side in the thickness direction can be pressed against the other.

In such a sealing material 72, the two covering members 14 cover one side of the sealing material main body 12 in the thickness direction and both sides in the width direction. For example, of the two covering members, members having different functions such that the outer member is a weather resistant member and the inner member is a moisture blocking member can be used in combination. Therefore, even if the structure 26 provided with the sealing material 72 is stored in the open air and is exposed to rainwater or the like in rainy weather, it is effective that the water is absorbed by the sealing material main body 12 of the sealing material 72. Can be suppressed.

<Sixth Embodiment>
The configuration of the sixth embodiment is basically the same as that of the first embodiment. However, in the present embodiment, the covering member 14 has a tearability in the longitudinal direction. That is, in the present embodiment, as an example, the covering member 14 is formed by uniaxial stretching processing, and when the covering member 14 is pulled from one end in the longitudinal direction in a direction intersecting the longitudinal direction, the covering member 14 becomes its longitudinal direction. Torn in the direction. As a result, the portion of the covering member 14 on the other side of the first covering portion 16 and both second covering portions 18 in the thickness direction can be removed from the sealing material main body 12.

In this embodiment, the covering member 14 is provided with easy tearability in the longitudinal direction by uniaxial stretching processing, but the processing method for imparting the easy tearability in the longitudinal direction to the covering member 14 is described. The processing is not limited to such uniaxial stretching processing, and if the covering member 14 can be easily torn in the longitudinal direction, the processing method, material and the like can be appropriately selected.

Further, the present embodiment is a configuration in which the covering member 14 having an easily tearable property in the longitudinal direction is applied to the first embodiment. However, the covering member 14 having such a tearability in the longitudinal direction may be applied to any one of the second embodiment to the fifth embodiment.

<7th embodiment and 8th embodiment>
As shown in FIG. 9, the sealing material 82 of the structure 80 according to the seventh embodiment includes a covering member 84 instead of the covering member 14 in the first embodiment. The covering member 84 is made of polyethylene, preferably linear low density polyethylene. A fused portion 86 is formed between the first covering portion 16 and both second covering portions 18 of the covering member 84 and the sealing material main body 12. In the fused portion 86, in a state where the sealing material main body 12 is covered with the covering member 84, for example, the coating member 84 formed of the linear low-density polyethylene has a temperature equal to or higher than the melting point of the linear low-density polyethylene. It is formed by pressurizing the covering member 84 to the sealing material main body 12 in a state of being heated at a temperature (preferably around 160 degrees Celsius).

On the other hand, as shown in FIG. 10, in the structure 90 and the sealing material 92 according to the eighth embodiment, the sealing material 92 is located between the second covering portions 18 of the covering member 84 and the sealing material main body 12. A fused portion 86 is formed on the other side in the thickness direction (the side opposite to the arrow T in FIG. 10) with respect to the intermediate portion in the thickness direction.

By forming such a fused portion 86, the covering member 84 is integrally fused to the sealing material main body 12. Therefore, when the adhesive portion 22 of the sealing materials 82 and 92 is attached to the first adherend 24, the covering member 84 is prevented from being displaced with respect to the sealing material main body 12. As a result, for example, when the adhesive portion 22 of the sealing materials 82 and 92 is attached to the first adherend 24, the covering member 84 shifts with respect to the sealing material main body 12 and the sealing material main body 12 is inadvertently exposed. Can be prevented.

Moreover, when the covering member 84 formed of the linear low-density polyethylene is heated at a temperature of 160 degrees Celsius, the covering member 84 is pressed against the sealing material main body 12 to form the fused portion 86. The covering member 84 can be easily peeled off from the sealing material main body 12. Further, since the heating temperature at which the covering member 84 is fused to the sealing material main body 12 is 160 degrees Celsius, the influence of heat on the sealing material main body 12 can be suppressed.

In the seventh embodiment and the eighth embodiment, the covering member 84 was formed of polyethylene containing linear low-density polyethylene. However, the covering member 84 may be formed of a material other than polyethylene. That is, the covering member 84 can be widely applied without being limited to the material as long as it is configured to be fused to the sealing material main body 12 by being heated.

Further, in the seventh embodiment and the eighth embodiment, the heating temperature at which the covering member 84 is fused to the sealing material main body 12 is set to 160 degrees Celsius. however. This heating temperature may be lower than 160 degrees Celsius or higher than 160 degrees Celsius.

Further, in the seventh embodiment and the eighth embodiment, the covering member 14 in the first embodiment is replaced with the covering member 84, but the second embodiment is described above. The covering member 14 or the covering member 42 in any one of the sixth embodiments may be replaced with the covering member 84.

<From the 9th embodiment to the 11th embodiment>
As shown in FIGS. 11 and 12A, the sealing material 102 of the structure 100 according to the ninth embodiment is both the covering member 14 of the sealing material 10 according to the first embodiment. 3 The covering portion 20 is provided with a perforation 104 as a fracture-inducing portion.

As shown in FIG. 12A, the perforation 104 is composed of through holes penetrating both the third covering portions 20 of the covering member 14, and as shown in FIG. 11, the perforation 104 is formed. A large number of through holes are formed in both third covering portions 20 of the covering member 14 at predetermined intervals in the longitudinal direction of the sealing material 102.

On the other hand, as shown in FIGS. 13 and 14A, the sealing material 112 of the structure 110 according to the tenth embodiment is the covering member 14 of the sealing material 102 according to the first embodiment. The other side of the sealing material 102 in both second covering portions 18 from the thickness direction intermediate portion (the end portion on the other side of the thickness direction intermediate portion of the sealing material 102 in both second covering portions 18 or a portion in the vicinity thereof. ) Is provided with a perforation 104 as a break-inducing portion.

Further, as shown in FIG. 15A, the sealing material 122 of the structure 120 according to the eleventh embodiment is a seal in both second covering portions 18 of the covering member 42 in the second embodiment. The other side of the material 122 from the middle portion in the thickness direction is fused to the end face in the width direction of the sealing material main body 12. Further, in the present embodiment, the perforations 104 are formed in the portions fused to the sealing material main body 12 in both the second covering portions 18 of the covering member 42.

In the above configuration, for example, when one end of the sealing material 102 to 122 in the first covering portion 16 of the covering members 14 and 42 in the longitudinal direction is pulled to one side in the thickness direction of the sealing material 102 to 122. , Tensile stress is concentrated on one end of the sealing materials 102 to 122 in the perforation 104 in the longitudinal direction, and the third covering portion 20 of the covering members 14 and 42 is broken at the perforation 104. In this state, the first covering portion 16 of the covering members 14 and 42 is further pulled, so that the third covering portion 20 is broken at the perforation 104, and the first covering portion 16 of the covering members 14 and 42, both second. The covering portion 18 and the like are removed, and one side surface in the thickness direction and both side surfaces in the width direction of the sealing material main body 12 are exposed (see FIGS. 12B, 14B, and 15B). ).

As described above, in each of the ninth to eleventh embodiments, the first covering portion 16 of the covering members 14, 42 is simply pulled by pulling one end of the first covering portion 16 of the covering members 14, 42 in the longitudinal direction. Both second covering portions 18 and the like can be removed to expose one side surface in the thickness direction and both side surfaces in the width direction of the sealing material main body 12. Therefore, the work of removing the covering member 14 is easy. Moreover, since the covering members 14 and 42 are broken at the perforations 104, it is possible to prevent the second covering portions 18 and the like of the covering members 14 and 42 from remaining largely attached to the sealing material main body 12.

The ninth embodiment is also a configuration in which the perforation 104 is provided in the third covering portion 20 of the covering member 14 in the first embodiment. However, for example, the perforation 104 may be provided in the third covering portion 20 of the covering member 14 in the third embodiment or the fourth embodiment.

Further, the tenth embodiment described above has a configuration in which perforations 104 are provided on both second covering portions 18 of the covering member 14 in the first embodiment. However, for example, the perforations 104 may be provided on both second covering portions 18 of the covering member 14 in the second embodiment or the third embodiment, or in the fourth embodiment. Perforations 104 may be provided at each of the ends (both ends in the width direction of the first covering portion 16) on both sides of the first covering portion 16 of the covering member 14 on both sides of the third covering portion 20 or their vicinity.

Further, in the eleventh embodiment described above, the portion of the covering member 42 on the other side of the middle portion in the thickness direction of the sealing material 40 of both second covering portions 18 in the second embodiment is covered with the sealing material. It is also configured to be fused to the widthwise end face of the main body 12. However, the perforation 104 may be formed in such a structure that the first covering portion 16 and the second covering portion 18 of the covering member 42 are fused to the sealing material main body 12.

That is, the perforation 104 exposes a surface of the sealing material main body of the sealing material on a side different from the surface facing the first adherend 24 by removing a part of the covering member at the perforation 104. If possible, it is not limited to the formed portion in the covering member.

<12th embodiment>
As shown in FIG. 16, the sealing material 132 of the structure 130 according to the twelfth embodiment is attached to one third covering portion 20 of the covering member 14 of the sealing material 10 according to the first embodiment. Two perforations 104 are formed as fracture-inducing portions. These perforations 104 are provided side by side in the width direction of the sealing material 122 in one of the third covering portions 20. Further, in the present embodiment, two perforations 104 as fracture-inducing portions are formed on the other third covering portion 20 of the covering member 14. These perforations 104 are provided side by side in the width direction of the sealing material 122 in the other third covering portion 20.

This embodiment having such a configuration has basically the same effect as that of the ninth embodiment, and can obtain basically the same effect as that of the ninth embodiment.

In this embodiment, two perforations 104 are provided in each of the third covering portions 20 of the covering member 14 of the sealing material 10 according to the first embodiment. However, it may be configured to provide three or more perforations 104 in each of the third covering portions 20, or the number of perforations 104 in one third covering portion 20 and the other third covering portion 20 may be provided. You may change it.

Further, in the twelfth embodiment, the two perforations 104 were provided in each third covering portion 20 of the covering member 14. However, the number of perforations 104 in each third covering portion 20 may be three or more. Further, the number of perforations 104 may be changed between the one third covering portion 20 and the other third covering portion 20. In this case, the sewing machine of one third covering portion 20 or the other third covering portion 20 may be used. The number of eyes 104 may be one.

Further, the present embodiment has a configuration in which two perforations 104 are provided in each of the third covering portions 20 of the covering member 14 of the sealing material 10 according to the first embodiment, that is, the ninth embodiment. The configuration was such that the perforations 104 of each third covering portion 20 in the above embodiment were made into a plurality of perforations. However, the number of perforations 104 of the second covering portion 18 of the covering member 42 in the tenth embodiment or the eleventh embodiment may be plural.

<13th embodiment>
As shown in FIG. 17, the sealing material 142 of the structure 140 according to the thirteenth embodiment has the thickness of the sealing material 142 of both second covering portions 18 of the covering member 42 in the seventh embodiment. Perforations 104 are provided on the other side of the middle portion of the direction. Further, in the present embodiment, the through holes constituting these perforations 104 are closed by the closing member 144 formed of the synthetic resin material.

These closing members 144 are not attached to the inner peripheral surface of the through hole constituting the perforation 104, or are attached to the inner peripheral surface of the through hole constituting the perforation 104 with a weak force. Therefore, it is possible to prevent the liquid such as rainwater from being absorbed by the sealing material main body 12 through the through hole of the perforation 104.

Further, such an embodiment basically has the same operation as that of the tenth embodiment, and can obtain the same effect as that of the tenth embodiment.

In this embodiment, perforations 104 are provided on the other side of the middle portion in the thickness direction of the sealing material 142 of both second covering portions 18 of the covering member 42 in the seventh embodiment. Met. However, in the embodiments described so far, if the covering members 14 and 42 are provided with the perforations 104, the closing member 144 can be provided in the through holes of the perforations 104.

<From the 14th embodiment to the 17th embodiment>
As shown in FIG. 18, the sealing material 152 of the structure 150 according to the 14th embodiment is the thickness of the sealing material 152 in both the second covering portions 18 of the covering member 14 in the first embodiment. The first half cut 154 is provided at the end on the other side of the direction. On the other hand, as shown in FIG. 19, the sealing material 162 of the structure 160 according to the fifteenth embodiment is a seal in both second covering portions 18 of the covering member 42 in the second embodiment. The first half cut 154 is provided at the end of the material 162 on the other side in the thickness direction. Here, the half-cut refers to one formed in a concave shape without penetrating in the thickness direction, and includes one formed continuously in the longitudinal direction and one formed intermittently.

Further, as shown in FIG. 20, the sealing material 172 of the structure 170 according to the sixteenth embodiment is the sealing material 172 in both second covering portions 18 of the covering member 42 in the eighth embodiment. The first half cut 154 is provided at the end on the other side in the thickness direction. Further, as shown in FIG. 21, the sealing material 182 of the structure 180 according to the 17th embodiment is the width of the sealing material 182 in the first covering portion 16 of the covering member 66 in the 4th embodiment. The first half cut 154 is provided at both ends in the direction.

In the sealing materials 152 to 172, the first half cut 154 formed on the second covering portion 18 on one side in the width direction of the sealing materials 152 to 172 is the second covering portion on one side in the width direction of the sealing materials 152 to 172. In 18, the sealing material 152 to 172 is composed of recesses opened to one side in the width direction. On the other hand, in the sealing materials 152 to 172, the first half cut 154 formed on the second covering portion 18 on the other side in the width direction of the sealing materials 152 to 172 is the other side in the width direction of the sealing materials 152 to 172. The second covering portion 18 is composed of recesses opened to the other side in the width direction of the sealing materials 152 to 172. Further, in the sealing material 182, the first half cut 154 formed at both ends of the sealing material 182 of the first covering portion 16 in the width direction is opened on the surface of the first covering portion 16 opposite to the sealing material main body 12. It is composed of recesses.

In the 14th to 16th embodiments, one end of the sealing material 152 to 172 in the first covering portion 16 of the covering members 14 and 42 is pulled to one side in the thickness direction of the sealing material 152 to 172. In the 17th embodiment, one end of the sealing material 182 in the portion between the two first half cuts 154 in the first covering portion 16 of the covering member 66 is one end in the thickness direction of the sealing material 182. When pulled to the side of, the tensile stress concentrates on one end of the sealing material 152 to 182 in the first half cut 154 in the longitudinal direction, and the second covering portion 18 or the covering member 66 of the covering members 14 and 42 in the first half cut 154. The first covering portion 16 of the above is broken.

In this state, the first covering portion 16 of the covering members 14 to 66 is further pulled, so that the second covering portion 18 or the first covering portion 16 is broken by the first half cut 154. Thereby, in each of the 14th to 16th embodiments, the first covering portion 16 of the covering member 14, the second covering portion 18 and the like are removed. On the other hand, in the 17th embodiment, the portion between the first half cuts 154 in the first covering portion 16 of the covering member 66 is removed. Thereby, in each of the 14th to 17th embodiments, the surface of the sealing material main body 12 on one side in the thickness direction and the surface on both sides in the width direction are exposed.

As described above, in each of the 14th to 16th embodiments, the first covering portion 16 of the covering members 14, 42 is simply pulled by pulling one end of the first covering portion 16 of the covering members 14, 42 in the longitudinal direction. Both second covering portions 18 and the like can be removed to expose one side surface in the thickness direction and both side surfaces in the width direction of the sealing material main body 12. Therefore, the work of removing the covering members 14 and 42 is easy. Moreover, since the covering members 14, 42 are broken by the first half cut 154, the second covering portions 18, the first covering portion 16, and the like of the covering members 14, 42, 66 remain largely adhered to the sealing material main body 12. Can be suppressed.

Further, in each of the 14th to 17th embodiments, the recesses constituting the first half-cut 154 include the second covering portion 18 of the covering members 14 and 42 and the first covering portion 16 of the covering members 14 and 66. It does not penetrate in the thickness direction (in the second covering portion 18, the width direction of the sealing materials 152 to 172). Therefore, it is possible to prevent liquids such as rainwater from entering and being absorbed by the sealing material main body 12.

Further, in each of the 14th to 17th embodiments, basically the same operations as those in the first, second, fourth and eighth embodiments are performed, and the first, second, fourth and fourth embodiments are performed. The same effect as that of the eighth embodiment can be obtained.

In each of the 14th to 16th embodiments, the first half-cut 154 is provided on the second covering portion 18 of the covering members 14 and 42, and the 17th embodiment is the first half-cut 154. Was provided on the first covering portion 16 of the covering member 66. However, if the first half-cut 154 can expose a surface of the sealing material main body of the sealing material on a side different from the surface facing the first adherend 24 by removing the covering member, the covering member may be used. It is not limited to the formation site.

<18th embodiment>
As shown in FIG. 22, the sealing material 192 of the structure 190 according to the eighteenth embodiment has two first halves on both second covering portions 18 of the covering member 42 in the second embodiment. It is configured to have a cut 154. The two first half cuts 154 of each of the two second covering portions 18 are aligned in the thickness direction of the sealing material 192 at the end on the other side in the thickness direction of the sealing material 192 of each second covering portion 18. It is formed.

In the eighteenth embodiment, when one end of the sealing material 192 in the first covering portion 16 of the covering member 42 in the longitudinal direction is pulled to one side in the thickness direction of the sealing material 192, each second covering portion 18 Tensile stress is concentrated on one end in the longitudinal direction of the sealing material 192 in at least one of the two first half-cuts 154, and the second covering portion 18 of the covering member 42 is broken in the first half-cut 154.

In this state, the first covering portion 16 of the covering member 42 is further pulled, so that the second covering portion 18 is broken by the first half cut 154. As a result, in the eighteenth embodiment, the first covering portion 16 of the covering member 14, the second covering portions 18 and the like are removed, and the sealing material main body 12 has one side surface in the thickness direction and both sides in the width direction. The surface is exposed.

As described above, in the eighteenth embodiment, the first covering portion 16 of the covering member 42, both second covering portions 18, and the like can be obtained by simply pulling one end of the first covering portion 16 of the covering member 42 in the longitudinal direction. It can be removed to expose one side of the sealing material body 12 in the thickness direction and both sides in the width direction. Therefore, the work of removing the covering member 42 is easy. Moreover, since the covering member 42 is broken by the first half cut 154, it is possible to prevent the second covering portion 18 of the covering member 42 from remaining largely attached to the sealing material main body 12.

Further, in the eighteenth embodiment, the recess constituting the first half-cut 154 does not penetrate the second covering portion 18 of the covering member 42 in the thickness direction (width direction of the sealing material 192). Therefore, it is possible to prevent liquids such as rainwater from entering and being absorbed by the sealing material main body 12.

Further, in the eighteenth embodiment, basically the same operation as that of the second embodiment can be obtained, and the same effect as that of the second embodiment can be obtained.

In the eighteenth embodiment, the two first half-cuts 154 were provided on the second covering portion 18 of the covering member 42. However, if the two first half-cuts 154 can expose a surface of the sealing material main body of the sealing material on a side different from the surface facing the first adherend 24 by removing the covering member. It is not limited to the formed portion in the covering member.

Further, in the eighteenth embodiment, two first half-cuts 154 were provided on the second covering portion 18 of the covering member 42. However, the number of the first half cut 154 may be 3 or more. Further, the number of the first half cuts 154 may be changed between the one second covering portion 18 and the other second covering portion 18. In this case, one second covering portion 18 or the other second covering portion 18 may be changed. The number of the first half cut 154 may be one.

<19th embodiment>
As shown in FIG. 23, the sealing material 202 of the structure 200 according to the nineteenth embodiment is attached to both second covering portions 18 of the covering member 14 of the sealing material 52 according to the third embodiment. It is a configuration provided with two half cuts 204. The second half-cut 204 of the second covering portion 18 on one side in the width direction of the sealing material 202 is a surface on the other side in the width direction of the sealing material 202 in the second covering portion 18 on one side in the width direction of the sealing material 202. It is composed of recesses opened with. The recess constituting the second half cut 204 of the second covering portion 18 on one side in the width direction of the sealing material 202 is formed in the longitudinal direction of the sealing material 202 in the second covering portion 18 on one side in the width direction of the sealing material 202. Many are formed intermittently.

The second half-cut 204 of the second covering portion 18 on the other side in the width direction of the sealing material 202 is a surface on the other side in the width direction of the sealing material 202 in the second covering portion 18 on the other side in the width direction of the sealing material 202. It is composed of recesses opened with. The recess constituting the second half cut 204 of the second covering portion 18 on the other side in the width direction of the sealing material 202 is formed in the longitudinal direction of the sealing material 202 in the second covering portion 18 on the other side in the width direction of the sealing material 202. Many are formed intermittently.

In the nineteenth embodiment, when one end of the sealing material 202 in the first covering portion 16 of the covering member 14 in the longitudinal direction is pulled to one side in the thickness direction of the sealing material 202, the second half cut 204 Tensile stress is concentrated on one end of the sealing material 202 in the longitudinal direction, and the second covering portion 18 of the covering member 14 is broken in the second half cut 204.

In this state, the first covering portion 16 of the covering member 14 is further pulled, so that the second covering portion 18 is broken by the second half cut 204. As a result, in the nineteenth embodiment, the first covering portion 16 and both second covering portions 18 of the covering member 14 are removed, and the sealing material main body 12 has one side surface in the thickness direction and both sides in the width direction. The surface is exposed.

As described above, in the nineteenth embodiment, the first covering portion 16 of the covering member 14, the second covering portion 18, and the like can be obtained by simply pulling one end of the first covering portion 16 of the covering member 14 in the longitudinal direction. It can be removed to expose one side of the sealing material body 12 in the thickness direction and both sides in the width direction. Therefore, the work of removing the covering member 14 is easy. Moreover, since the covering member 14 is broken by the second half-cut 204, it is possible to prevent the second covering portion 18, the first covering portion 16, and the like of the covering member 14 from remaining largely attached to the sealing material main body 12.

Further, in the nineteenth embodiment, the recess constituting the second half-cut 204 does not penetrate the second covering portion 18 of the covering member 14 in the thickness direction (width direction of the sealing material 202). Therefore, it is possible to prevent liquids such as rainwater from entering and being absorbed by the sealing material main body 12.

Further, in the 19th embodiment, basically the same operation as that of the 3rd embodiment can be obtained, and the same effect as that of the 3rd embodiment can be obtained.

In the 19th embodiment, the second half-cut 204 was provided on the second covering portion 18 of the covering member 14. However, if the second half-cut 204 can expose a surface of the sealing material main body of the sealing material on a side different from the surface facing the first adherend 24 by removing the covering member, the covering member may be used. It is not limited to the formation site.

<20th embodiment>
As shown in FIG. 24, the sealing material 212 of the structure 210 according to the twentieth embodiment has the thickness of the sealing material 212 of both second covering portions 18 of the covering member 14 in the first embodiment. The first half cut 154 and the second half cut 204 are provided at the end on the other side of the direction. The second half-cut 204 of both second covering portions 18 is formed on one side in the thickness direction of the sealing material 212 of the first half-cut 154 of each second covering portion 18.

In the twentieth embodiment, when one end of the sealing material 212 in the first covering portion 16 of the covering member 14 in the longitudinal direction is pulled to one side in the thickness direction of the sealing material 212, each second covering portion 18 is pulled. Tensile stress is concentrated on one end of the sealing material 212 in the longitudinal direction in at least one of the first half cut 154 and the second half cut 204, and the first half cut 154 and the second half cut 204 of the covering member 14 2 The covering portion 18 is broken.

In this state, the first covering portion 16 of the covering member 14 is further pulled, so that the second covering portion 18 is broken by the first half cut 154 or the second half cut 204. Thereby, in the twentieth embodiment, the first covering portion 16 of the covering member 14, the both second covering portions 18, and the like are removed, and the sealing material main body 12 has one side surface in the thickness direction and both sides in the width direction. The surface is exposed.

As described above, in the twentieth embodiment, the first covering portion 16 of the covering member 14, the second covering portion 18, and the like can be obtained by simply pulling one end of the first covering portion 16 of the covering member 14 in the longitudinal direction. It can be removed to expose one side of the sealing material body 12 in the thickness direction and both sides in the width direction. Therefore, the work of removing the covering member 14 is easy. Moreover, since the covering member 14 is broken by the first half cut 154, it is possible to prevent the second covering portion 18 of the covering member 14 from remaining largely attached to the sealing material main body 12.

Further, in the twentieth embodiment, the recess constituting the first half-cut 154 does not penetrate the second covering portion 18 of the covering member 14 in the thickness direction (width direction of the sealing material 212). Therefore, it is possible to prevent liquids such as rainwater from entering and being absorbed by the sealing material main body 12.

Further, in the twentieth embodiment, basically the same operation as that of the first embodiment can be obtained, and the same effect as that of the first embodiment can be obtained.

In the twentieth embodiment, the first half-cut 154 and the second half-cut 204 were provided on the second covering portion 18 of the covering member 14. However, for example, the first half-cut 154 and the second half-cut 204 may be provided on the second covering portion 18 of the covering member 14 on each of the third covering portions 20 of the covering member 14. That is, in the first half cut 154 and the second half cut 204, the surface of the sealing material main body of the sealing material on the side different from the surface facing the first adherend 24 is exposed by removing the covering member. If possible, the present invention is not limited to the formed portion in the covering member.

Further, in the twentieth embodiment, the second half cut 204 is provided on one side of the sealing material 212 in the thickness direction with respect to the first half cut 154. However, the first half cut 154 may be provided on one side of the sealing material 212 in the thickness direction with respect to the second half cut 204. Further, by providing a protrusion or a knob on at least a part of any one of the first covering portion 16 and the second covering portion 18, the covering portion may be easily pinched.

Further, in the embodiments described so far, the first half cut 154 and the second half cut 204 are used as fragile portions as fracture inducing portions. However, the vulnerable part is not limited to such a configuration. A groove continuous in the longitudinal direction of the covering member may be formed, and this groove may be used as a fragile portion. At the bottom of such a groove, the covering member is thinner than the rest, and the mechanical strength (such as shear strength or tear strength) is reduced, which can induce the covering member to break. .. Further, the covering member may be subjected to a linear heat treatment or the like long in the longitudinal direction to reduce the mechanical strength (shear strength, tear strength, etc.), and the heat-treated portion of the covering member may be used as a fragile portion.

As described above, if the fragile portion as the fracture-inducing portion has a lower mechanical strength (shear strength, tear strength, etc.) than other portions in the covering member, the fragile portion is limited to its specific configuration and specific manufacturing method. Widely applicable without.

With the above configuration, in addition to water containing rainwater and other liquids (seawater, aqueous solution, solvent, oil, sap, etc.), foreign substances such as dust and sand, insects, etc. should be prevented from adhering. Can be done. Further, by imparting functional characteristics to the covering portion, it is possible to prevent the main body from deterioration due to light, and it is possible to store the main body outdoors for a long period of time.

10, 40, 52, 62, 72, 82, 92, 102, 112, 122, 132, 142, 152, 162, 172, 182, 192, 202, 212 Sealing material 12, 54, 64 Sealing material body 14, 42 , 66, 84 Covering member 16 First covering part 18 Second covering part 20 Third covering part 22 Adhesive part (sticking member)
24 First adherend 26, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 20.210 Structure 104 Perforations (breakage inducer) )
154 First half perforation (breakage inducer)
204 Second half perforation (breakage inducer)

Claims (10)

The main body of the sealing material that swells by absorbing water,
A sticking member provided on the sealing material main body on a predetermined direction orthogonal to the longitudinal direction of the sealing material main body and attached to a first adherend arranged on the predetermined direction side of the sealing material main body.
Of the surfaces on the direction orthogonal to the longitudinal direction of the sealing material main body, at least the surface excluding the surface on the predetermined direction side is covered to restrict the passage of water from the outside to the sealing material main body. A covering member configured to be removable from the sealing material body ,
A sealing material. The sealing material according to claim 1, wherein the covering member is formed of a thin-walled member made of a material that does not allow water to permeate. The sealing material according to claim 1 or 2, wherein the covering member includes a fracture-inducing portion that induces a breakage of the covering member along the longitudinal direction of the sealing material main body by applying a load to the covering member. The sealing material according to claim 3, wherein the fracture-inducing portion has a lower mechanical strength than a portion of the covering member other than the fracture-inducing portion. The seal according to any one of claims 1 to 4, wherein the covering member has higher tearability in the longitudinal direction of the sealing material body than in the direction intersecting the longitudinal direction of the sealing material body. Material. The sealing material according to claim 5, wherein the covering member is formed by stretching to be easily torn in the longitudinal direction of the sealing material main body. The sealing material according to any one of claims 1 to 6, wherein at least a part of the covering member is integrally connected to the sealing material main body. The sealing material according to claim 7, wherein the covering member is formed of linear low-density polyethylene and is fused to the sealing material main body by heating the covering member. The sealing material according to any one of claims 1 to 8.
The first adherend to which the sticking member of the sealing material is attached and to which the sealing material is attached,
Structure with. The main body of the sealing material that swells by absorbing water,
A sticking member provided on the sealing material main body on a predetermined direction orthogonal to the longitudinal direction of the sealing material main body and attached to a first adherend arranged on the predetermined direction side of the sealing material main body.
A covering member that covers at least the surface of the surface orthogonal to the longitudinal direction of the sealing material body except for the surface on the predetermined direction side to restrict the passage of water from the outside to the sealing material body. And, with
The covering member has a higher tearability in the longitudinal direction of the sealant body than in a direction intersecting the longitudinal direction of the sealant body, and the easily tearable property is imparted by being formed by stretching. Sealing material to be done.

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