JP2013049844A - Fiber-reinforced adhesive sheet, fiber-reinforced adhesive sheet package, and method for reinforcing building by using the fiber-reinforced adhesive sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide: a fiber-reinforced adhesive sheet which can easily be adhered on a reinforcing surface of a body to be reinforced; a fiber-reinforced adhesive sheet package in which the fiber-reinforced adhesive sheet is accommodated; and a construction method for reinforcing buildings by using the fiber-reinforced adhesive sheet.SOLUTION: The fiber-reinforced adhesive sheet 1 is configured such that peeling sheets 2, 5 having shieldability of moisture or ultraviolet rays are laminated on both surfaces of a fiber-reinforced adhesive layer 4 made by impregnating or laminating a fiber sheet 3 with or on a one-component adhesive composition that is cured with moisture or ultraviolet rays. The fiber-reinforced adhesive sheet is hermetically accommodated in an outer package container having shieldability of moisture or ultraviolet rays. When a building is reinforced using the fiber-reinforced adhesive sheet 1, a second peeling sheet 5 is peeled off; the fiber-reinforced adhesive layer 4 is pasted on a reinforcing surface of a body to be reinforced 10, and pressed and fastened from the surface of a first peeling sheet 2, and cured with moisture or ultraviolet rays.

Description

  The present invention relates to a fiber reinforced adhesive sheet, a fiber reinforced adhesive sheet package, and a building reinforcing method using the fiber reinforced adhesive sheet.

  In recent years, a fiber sheet bonding method has been spreading as a method for reinforcing buildings. In this construction method, a carbon fiber sheet is impregnated with an epoxy resin and adhered to the concrete surface, whereby the concrete is subjected to bending reinforcement, shear reinforcement, and toughness reinforcement.

  Conventionally, as the impregnation resin used in the carbon fiber sheet construction method, a two-pack type epoxy resin system is mainly used, and a one-pack type epoxy resin system is not used. However, in the two-pack type epoxy resin system, the measurement and mixing of the resin must be performed on site, which is not only inferior in workability but also has a problem that the quality of the obtained composition may vary. In addition, since the resins must be mixed at a constant mixing ratio, there is a problem that at least one of the resins is left and the raw materials are wasted. Further, considering the time (pot life) from mixing the two liquids to curing the mixed liquid, there is a problem that the two liquids must be mixed little by little. In addition, since the process of applying the mixed liquid to the concrete surface and then applying the fiber sheet is performed, there is also a problem that a difference in skill may occur for each worker in applying the mixed liquid and attaching the fiber sheet. In addition, after the work is finished, the container in which the two liquids are mixed must be washed, or the empty can that contains the two liquids must be discarded. There is also a problem of accompanying.

  In order to solve the above problems, a one-component epoxy resin composite material that has a reinforcing effect equivalent to that of a conventional two-component epoxy resin composite material, has good workability, and is excellent in terms of work environment and resource consumption. A building reinforcement method has been proposed (see, for example, Patent Document 1). According to this method, since the mixing operation of the main agent and the curing agent is eliminated, the workability is excellent as compared with the conventional method, and the material is not wasted, so that it is excellent in terms of resource consumption.

JP 11-131823 A

  However, even with this method, it is necessary to apply the one-component epoxy resin composition to the concrete surface and then apply the fiber sheet, and there is a difference in skill for each worker in applying the mixed solution and applying the fiber sheet. The challenge of occurring remains.

  As a result of intensive studies to solve the above-mentioned problems, the present inventors have found that a fiber sheet is impregnated or laminated with a one-component adhesive composition that is cured by moisture or ultraviolet rays on both sides of a fiber reinforced adhesive layer. By providing a fiber reinforced adhesive sheet laminated with a release sheet having moisture or ultraviolet light blocking properties, workability can be further improved, and differences in skills among workers in the process of applying the fiber sheet can be eliminated. The present inventors have found that the effect can be obtained, and have completed the present invention. In addition, the present inventors also provide a fiber reinforced adhesive sheet in which release sheets are laminated on both sides of a fiber reinforced adhesive layer obtained by impregnating or laminating a fiber sheet with a one-component adhesive composition that is cured by moisture or ultraviolet rays. However, it has been found that the above-mentioned effect can be obtained also by providing a fiber-reinforced adhesive sheet package that is hermetically housed in an exterior container having a moisture or ultraviolet blocking property. Specifically, the present invention provides the following.

  (1) The present invention is a fiber reinforced adhesive in which a release sheet is laminated on both sides of a fiber reinforced adhesive layer obtained by impregnating or laminating a fiber sheet with a one-component adhesive composition that is cured by moisture or ultraviolet rays. It is a sheet | seat, Comprising: The said peeling sheet is a fiber reinforced adhesive sheet | seat which has the said moisture or ultraviolet-ray shielding property.

  (2) Moreover, this invention is a fiber reinforced adhesive sheet | seat as described in (1) in which at least one of the said peeling sheet has transparency which permeate | transmits visible light.

  (3) Further, in the present invention, the first release sheet, the fiber sheet, the one-component adhesive composition layer, and the second release sheet are sequentially laminated (1). Or it is a fiber reinforced adhesive sheet as described in (2).

  (4) Further, in the present invention, at least one side end face of the fiber reinforced adhesive sheet is subjected to end face sealing treatment so as to have the moisture or ultraviolet blocking property. The fiber-reinforced adhesive sheet according to any one of the above.

  (5) Moreover, this invention is a fiber reinforced adhesive sheet | seat as described in (4) whose said end surface sealing process is a heat seal process or an adhesive processing.

  (6) Further, the present invention is the fiber reinforced adhesive sheet according to any one of (1) to (5), wherein the fiber reinforced adhesive sheet is a long winding body having a predetermined width direction. .

  (7) Further, the present invention provides a fiber reinforced adhesive in which the fiber reinforced adhesive sheet according to any one of (1) to (6) is hermetically accommodated in the moisture or ultraviolet shielding outer container. It is an agent sheet package.

  (8) Moreover, this invention is the construction method which reinforces a building using the fiber reinforced adhesive sheet in any one of (1) to (6), Comprising: One of the said fiber reinforced adhesive sheets The release sheet is peeled off, and the exposed fiber reinforced adhesive layer is attached to the reinforcing surface of the reinforced body, pressed from the other release sheet, and the fiber reinforced adhesive layer is cured by the moisture or ultraviolet rays. It is a building reinforcement method.

  (9) The present invention also provides a fiber reinforced adhesive in which release sheets are laminated on both sides of a fiber reinforced adhesive layer obtained by impregnating or laminating a fiber sheet with a one-component adhesive composition that is cured by moisture or ultraviolet rays. It is a fiber reinforced adhesive sheet packaging body in which the sheet is hermetically housed in an exterior container having a moisture or ultraviolet blocking property.

  (10) Moreover, this invention is a construction method which takes out a fiber reinforced adhesive sheet from the fiber reinforced adhesive sheet package as described in (9), and reinforces a building using this fiber reinforced adhesive sheet, One of the release sheets of the fiber reinforced adhesive sheet is peeled off, and the exposed fiber reinforced adhesive layer is attached to a reinforcing surface of a reinforced body and pressed from the other release sheet, and the moisture or ultraviolet light is applied. This is a building reinforcement method for curing the fiber-reinforced adhesive layer.

  According to the present invention, one release sheet of the fiber reinforced adhesive sheet is peeled off, and the exposed fiber reinforced adhesive layer is attached to the reinforcing surface of the reinforced body, and is pressed from the other release sheet, A building can be reinforced by sticking a fiber reinforced adhesive sheet on a reinforcing surface of a reinforced body simply by curing the fiber reinforced adhesive layer with moisture or ultraviolet rays. Therefore, the fiber-reinforced adhesive sheet can be attached to the reinforced body very easily, and the quality difference that can occur depending on the skill of the operator can be suppressed.

It is sectional drawing which shows the fiber reinforced adhesive agent sheet which concerns on 1st Embodiment of this invention. It is a figure which shows that the said fiber reinforced adhesive sheet is an elongate winding body which has a predetermined width direction as one form of the said fiber reinforced adhesive sheet. It is a figure which shows the reinforcement construction method of the building using the said fiber reinforced adhesive sheet in case a to-be-reinforced body is concrete. It is a figure which shows the reinforcement construction method of the building using the said fiber reinforced adhesive sheet in case a to-be-reinforced body is wood. It is sectional drawing which shows the fiber reinforced adhesive sheet | seat which concerns on the modification of 1st Embodiment. It is sectional drawing which shows the fiber reinforced adhesive sheet | seat which concerns on the modification of 1st Embodiment. It is sectional drawing which shows the fiber reinforced adhesive sheet | seat which concerns on the modification of 1st Embodiment. It is sectional drawing which shows the fiber reinforced adhesive sheet | seat which concerns on the modification of 1st Embodiment. It is sectional drawing which shows the fiber reinforced adhesive sheet | seat which concerns on the modification of 1st Embodiment. It is sectional drawing which shows the fiber reinforced adhesive sheet | seat which concerns on the modification of 1st Embodiment. It is the schematic which shows the fiber reinforced adhesive sheet | seat package which concerns on 2nd Embodiment of this invention. It is sectional drawing of the fiber reinforced adhesive sheet accommodated in the fiber reinforced adhesive sheet package which concerns on 2nd Embodiment of this invention.

  Hereinafter, specific embodiments of the present invention will be described in detail. However, the present invention is not limited to the following embodiments, and may be implemented with appropriate modifications within the scope of the object of the present invention. be able to.

[First Embodiment]
The fiber reinforced adhesive sheet according to the first embodiment of the present invention has release sheets on both sides of a fiber reinforced adhesive layer in which a fiber sheet is impregnated or laminated with a one-component adhesive composition that is cured by moisture or ultraviolet rays. The release sheet is laminated, and has moisture or ultraviolet blocking properties.

  In 1st Embodiment of this invention, in order to abbreviate | omit the process of apply | coating an adhesive composition to the reinforcement surface of a to-be-reinforced body, and enable it to stick a fiber sheet to a reinforcement surface, 1 liquid hardened | cured with moisture or an ultraviolet-ray It is characterized in that a release sheet having moisture or ultraviolet ray blocking properties is laminated on both sides of a fiber reinforced adhesive layer in which a fiber sheet is impregnated or laminated with a mold adhesive composition. Hereinafter, the fiber-reinforced adhesive sheet according to the first embodiment of the present invention will be specifically described.

[Fiber-reinforced adhesive sheet 1]
FIG. 1 is a schematic cross-sectional view of a fiber-reinforced adhesive sheet 1 according to the first embodiment of the present invention. The fiber reinforced adhesive sheet 1 includes a first release sheet 2, a fiber sheet 3, and a fiber reinforced adhesive layer 4 in which the fiber sheet 3 is impregnated or laminated with an adhesive composition that is cured by moisture or ultraviolet rays. And the second release sheet 5 are sequentially laminated.

<First release sheet 2>
The first release sheet 2 may be anything as long as it has moisture or ultraviolet blocking properties. Examples of the moisture barrier property include a polyvinylidene chloride film, a polyvinyl alcohol film, a polyacrylonitrile film, an ethylene-vinyl alcohol copolymer film, an aluminum foil, a nylon multilayer film, and a transparent vapor deposition film. Examples of the film having ultraviolet blocking properties include films containing a conventionally known ultraviolet absorber in addition to the above aluminum foil and aluminum vapor deposited film. In the case where the first release sheet 2 has neither moisture blocking property nor ultraviolet blocking property, the adhesive composition is cured before the fiber reinforced adhesive sheet 1 is attached to the reinforcing surface of the reinforced body. Therefore, it is not preferable in that the performance of attaching the fiber-reinforced adhesive sheet 1 to the reinforcing surface may be inferior. In the release sheet according to the first embodiment of the present invention, the release surface may be subjected to a conventionally known release treatment such as silicone-based or fluorine-based.

  The lower limit of the thickness of the first release sheet 2 is preferably 5 μm or more. When the thickness is less than 5 μm, it is not preferable in that the moisture or ultraviolet blocking property may not function effectively. The upper limit of the thickness of the first release sheet 2 is not particularly limited, but when the fiber reinforced adhesive sheet 1 is a long winding body having a predetermined width direction, the upper limit is preferably less than 1000 μm. .

<Fiber sheet 3>
The fiber sheet 3 may be any material as long as it is used as a material used in the fiber sheet bonding method. For example, a carbon fiber sheet, an aramid fiber sheet, a glass fiber sheet, and the like are known. . The lower limit of the thickness of the fiber sheet 3 is preferably 10 μm or more. When the thickness is less than 10 μm, it is not preferable in that the reinforced body may not be effectively reinforced even if the fiber reinforced adhesive sheet 1 is attached to the reinforcing surface of the reinforced body. Although the upper limit in particular of the thickness of the fiber sheet 3 is not restrict | limited, When making the fiber reinforced adhesive sheet 1 the elongate winding body which has a predetermined | prescribed width direction, it is preferable that an upper limit is less than 3000 micrometers.

<Fiber-reinforced adhesive layer 4>
The fiber reinforced adhesive layer 4 is a layer produced by impregnating or laminating the fiber sheet 3 with the adhesive composition. The fiber reinforced adhesive layer 4 in FIG. 1 shows a case where the adhesive composition is laminated on the fiber sheet 3, but is not limited thereto, and the adhesive composition is applied to the fiber sheet 3. It may be impregnated.

  In the case where the first release sheet 2 has moisture barrier properties, the adhesive composition needs to be a one-component type that is cured by moisture. In the case where the first release sheet 2 has ultraviolet blocking properties, the adhesive composition needs to be a one-component type that is cured by ultraviolet rays. When the adhesive composition is not curable by moisture or ultraviolet rays, even if the fiber reinforced adhesive layer 4 exposed by peeling off the second release sheet is attached to the reinforcing surface of the reinforced body, This is not preferable because the composition is not cured and the fiber sheet 3 may not be effectively bonded to the reinforced body. Moreover, when an adhesive composition is not 1 liquid type, it is unpreferable at the point which cannot be formed as the fiber reinforced adhesive sheet 1 from the first.

  Although it does not specifically limit as 1 liquid type adhesive composition hardened | cured by moisture, For example, an epoxy-type adhesive composition as described in said patent document 1, WO2010 / 086924 description in an international publication pamphlet A urethane adhesive composition comprising a urethane polymer having an isocyanate group can be exemplified.

  Examples of the one-component adhesive composition that is cured by ultraviolet rays include polyurethane (meth) acrylate, polyester (meth) acrylate, epoxy (meth) acrylate, polyol (meth) acrylate, polyether (meth) acrylate, melamine ( Examples thereof include a composition containing an ultraviolet-polymerizable acrylic resin such as (meth) acrylate or silicone-based (meth) acrylate, and a photopolymerization initiator.

  The viscosity of the adhesive composition is preferably about 5 to 500 Pa · s (23 ° C.) from the viewpoints of applicability, fluidity, and impregnation into a fiber sheet.

  The lower limit of the thickness of the fiber reinforced adhesive layer 4 is preferably 10 μm or more. If the thickness is less than 10 μm, it is not preferable because there is a possibility that the fiber-reinforced adhesive sheet 1 may not be effectively bonded even if it is attached to the reinforcing surface of the reinforced body. Although the upper limit in particular of the thickness of the fiber sheet 3 is not restrict | limited, When making the fiber reinforced adhesive sheet 1 the elongate winding body which has a predetermined | prescribed width direction, it is preferable that an upper limit is less than 3000 micrometers.

<Second release sheet 5>
The second release sheet 5 needs to have the same properties as the first release sheet 2. That is, if the first release sheet 2 has a moisture blocking property, the second release sheet 5 also needs to have a moisture blocking property, and the first release sheet 2 has an ultraviolet blocking property. If it has, the 2nd peeling sheet 5 needs to also have the ultraviolet-blocking property. When the second release sheet 5 has neither moisture blocking properties nor ultraviolet blocking properties, the adhesive composition is cured before the fiber reinforced adhesive sheet 1 is attached to the reinforcing surface of the reinforced body. Therefore, it is not preferable in that the performance of attaching the fiber-reinforced adhesive sheet 1 to the reinforcing surface may be inferior.

  The first release sheet 2 and the second release sheet 5 may be the same or different from each other, but it is easy to perform the pressing operation from the outside after being attached. It is preferable that at least one of them has transparency that allows visible light to pass through, for example, it is easy to check the extent of spread or to check the degree of curing of the adhesive.

  The thickness of the second release sheet 5 is the same as that of the first release sheet. That is, the lower limit of the thickness of the second release sheet 5 is preferably 5 μm or more. When the thickness is less than 5 μm, it is not preferable in that the moisture or ultraviolet blocking property may not function effectively. The upper limit of the thickness of the second release sheet 5 is not particularly limited, but when the fiber reinforced adhesive sheet 1 is a long winding body having a predetermined width direction, the upper limit is preferably less than 1000 μm. .

  FIG. 2 shows one form of the fiber reinforced adhesive sheet 1. The fiber reinforced adhesive sheet 1 may have any form. However, the fiber reinforced adhesive sheet 1 can be freely processed according to the shape of the reinforcing surface of the object to be reinforced, and is excellent in carrying. A long winding body having a predetermined width direction is preferable. The length in the width direction is not particularly limited, but is preferably matched to the type of the object to be reinforced. For example, when the fiber reinforced adhesive sheet 1 is used for reinforcement of a pillar of a house such as a wood as a reinforced body, considering that the width of the pillar of the house is about 150 mm, the fiber reinforced adhesive sheet 1 The length in the width direction is preferably about 100 to 200 mm. Further, when the fiber reinforced adhesive sheet 1 is used for reinforcing a basic concrete such as a house, the object to be reinforced may be wider than that and about 200 mm to 500 mm.

  In addition, in order to prevent the adhesive composition from being cured before the fiber reinforced adhesive sheet 1 is attached to the reinforcing surface of the reinforced body, when the adhesive composition has moisture barrier properties, the fiber reinforced adhesive sheet The end face 1a on at least one side of 1 is preferably end-face sealed so as to have moisture barrier properties. Similarly, when the adhesive composition has an ultraviolet blocking property, the end surface 1a on at least one side of the fiber reinforced adhesive sheet 1 is preferably end-sealed so as to have an ultraviolet blocking property. . The end surface sealing process may be a conventionally known method, and for example, a heat sealing process or an adhesive processing process is known.

  In addition, in order to prevent the adhesive composition from being cured before the fiber reinforced adhesive sheet 1 is attached to the reinforcing surface of the reinforced body, the fiber reinforced adhesive sheet 1 is used when the adhesive composition is moisture curable. Is preferably hermetically housed in an outer container having moisture barrier properties. Similarly, when the adhesive composition has ultraviolet curable properties, the fiber reinforced adhesive sheet 1 is preferably hermetically housed in an exterior container having ultraviolet blocking properties. The sealed container may be a molded product such as a resin, but from the viewpoint of handling and disposal, a packaging bag that can be sealed by heat sealing or adhesion, including the above aluminum foil or aluminum deposited film, can be exemplified.

[Building reinforcement method]
Then, the construction method which reinforces a building using the fiber reinforced adhesive sheet | seat 1 which concerns on 1st Embodiment of this invention is demonstrated.

  FIG. 3 is a view showing a reinforcing method for a building using the fiber reinforced adhesive sheet 1 when the reinforced body is the basic concrete 10 of a house. First, the worker peels off the second release sheet 5 of the fiber-reinforced adhesive sheet 1 (FIG. 3A). At this time, the fiber sheet 3 is disposed on the second release sheet 5 because the fiber sheet 3 is a separate layer from the fiber reinforced adhesive layer 4. Thereby, the fiber sheet 3 serves as a release layer, and the second release sheet 5 can be easily peeled off. Subsequently, the operator attaches the fiber reinforced adhesive layer 4 exposed by peeling the second release sheet 5 to the reinforcing surface of the foundation concrete 10, and uses the roller 11 to remove the first release sheet 2. It clamps from the surface (FIG.3 (b)). At this time, the first release sheet 2 is preferably a transparent film in order to facilitate the pressing operation from the outside. Then, the fiber reinforced adhesive layer 4 is impregnated into the fiber sheet 3 by this pressing operation. Subsequently, the operator peels off the first release sheet 2 (FIG. 3C) and cures the fiber reinforced adhesive layer 4 with moisture or ultraviolet rays (FIG. 3D). In addition, the 1st peeling sheet 2 can be easily peeled by this hardening.

  According to the present invention, since the fiber sheet can be affixed to the reinforcing surface by omitting the step of applying the adhesive composition to the reinforcing surface of the object to be reinforced, the fiber-reinforced adhesive sheet is extremely easily attached to the material to be reinforced. In addition, the difference in quality that can occur depending on the skill of the operator can be suppressed.

  FIG. 3 illustrates the case where the reinforced body is the basic concrete 10 of the house, but the present invention is not limited to this, and even if the reinforced body is a column 12 made of wood, A fiber sheet can be affixed freely (FIG. 4). Moreover, although illustration is abbreviate | omitted, a to-be-reinforced body is not restricted to a house, If it is concrete or wood, it can be used for wide uses, such as a utility pole and a bridge pier.

  In the first embodiment, the fiber reinforced adhesive layer 4 is impregnated in the fiber sheet 3 and then the first release sheet 2 is peeled off to cure the fiber reinforced adhesive layer 4. When the liquid adhesive composition is of a moisture curable type, the first release sheet 2 may be peeled off after the fiber reinforced adhesive layer 4 is cured. Although the first release sheet 2 has a moisture barrier property, the concrete or wood that is the adherend has sufficient moisture, so even if the first release sheet 2 is on the surface of the fiber reinforced adhesive layer 4 This is because the liquid adhesive composition is cured. When the first release sheet 2 is peeled off after the fiber reinforced adhesive layer 4 is cured, the one-part adhesive composition can be prevented from being transferred to the release sheet when the first release sheet 2 is peeled off. The advantage is obtained.

[Modification of First Embodiment]
In the fiber reinforced adhesive sheet 1 according to the first embodiment, release sheets 2 and 5 having moisture or ultraviolet blocking properties are laminated on both surfaces of a fiber reinforced adhesive layer 4 impregnated or laminated on the fiber sheet 3. Yes. By the way, the essence of the invention according to the first embodiment is to block moisture or ultraviolet rays from the fiber reinforced adhesive layer 4 before use of the fiber reinforced adhesive sheet 1. Alternatively, it is not necessary that the release sheets 2 and 5 having ultraviolet blocking properties are in contact with the fiber reinforced adhesive layer 4. A person skilled in the art will be within the scope of the invention according to the first embodiment if there is a release sheet 2 or 5 having a moisture or ultraviolet blocking property on either the front surface or the back surface of the fiber reinforced adhesive layer 4. It is clear that it is included.

  Examples of the fiber-reinforced adhesive sheet 1 included in the scope of the invention according to the first embodiment include those shown in FIGS. 5-10, the code | symbol 6 shows a peeling sheet. Unlike the release sheets 2 and 5, the release sheet 6 does not need to have moisture or ultraviolet blocking properties. The release sheet 6 may or may not have moisture or ultraviolet blocking properties.

[Second Embodiment]
In 1st Embodiment, the fiber reinforced adhesive sheet | seat which was not able to be performed conventionally was provided by paying attention to the material of the peeling sheet laminated | stacked on both surfaces of a fiber reinforced adhesive bond layer. The second embodiment focuses on the material of the fiber reinforced adhesive sheet package that accommodates the fiber reinforced adhesive sheet, and provides a fiber reinforced adhesive sheet that could not be achieved conventionally.

  FIG. 11 is a schematic view of a fiber-reinforced adhesive sheet package 20 according to the second embodiment of the present invention. When the adhesive composition has moisture curable properties, the fiber reinforced adhesive sheet package 20 only needs to have moisture barrier properties, and when the adhesive composition has ultraviolet curable properties, the fiber reinforced adhesive sheet. The package 20 is sufficient if it has an ultraviolet blocking property, but from the viewpoint of handling and disposal, as shown in FIG. 11, the package 20 can be sealed by heat sealing or adhesion, including an aluminum foil or an aluminum deposited film. A bag is preferred.

  The state of the fiber reinforced adhesive sheet accommodated in the fiber reinforced adhesive sheet package 20 may be any state. For example, a plurality of fiber reinforced adhesive sheets may be accommodated in the fiber reinforced adhesive sheet package 20 in a state where they are stacked, and as shown in FIG. A plurality of reinforced adhesive sheets may be accommodated in the fiber reinforced adhesive sheet package 20. Among them, since it can be freely processed according to the shape of the reinforcing surface of the to-be-reinforced body and is excellent in carrying, a plurality of fiber-reinforced adhesive sheets as a long winding body are formed into a plurality of fiber-reinforced adhesive sheet packaging bodies 20. It is preferable to be accommodated. As described in the first embodiment, when a fiber reinforced adhesive sheet is used for reinforcement of a pillar of a house such as wood, as described in the first embodiment, considering that the width of the pillar of the house is about 150 mm, The length in the width direction of the fiber reinforced adhesive sheet is preferably about 100 to 200 mm. Moreover, when using a fiber reinforced adhesive sheet | seat for the use of the reinforcement | strengthening of basic concrete, such as a house, you may make it 200mm to about 500mm wider than that.

  FIG. 12 shows an example of a cross-sectional view of the fiber reinforced adhesive sheet 21 accommodated in the fiber reinforced adhesive sheet package 20. Release sheets 6 are laminated on both surfaces of the fiber reinforced adhesive layer. In the second embodiment, since the fiber reinforced adhesive sheet packaging body hermetically accommodates the fiber reinforced adhesive sheet 21, it is possible to block moisture or ultraviolet rays on the fiber reinforced adhesive layer 4. 6 may or may not have moisture or ultraviolet ray blocking properties.

[Building reinforcement method]
The building reinforcement method can be realized by the same method as in the first embodiment. That is, the operator first peels off one release sheet of the fiber reinforced adhesive sheet 21 and then attaches the fiber reinforced adhesive layer exposed by peeling off the one release sheet 6 to the reinforcing surface of the foundation concrete. At the same time, it is pressed from the surface of the other release sheet using a roller. Subsequently, the worker peels off the other release sheet and cures the fiber-reinforced adhesive layer with moisture or ultraviolet rays.

  According to the present invention, since the fiber sheet can be affixed to the reinforcing surface by omitting the step of applying the adhesive composition to the reinforcing surface of the object to be reinforced, the fiber-reinforced adhesive sheet is extremely easily attached to the material to be reinforced. In addition, the difference in quality that can occur depending on the skill of the operator can be suppressed.

DESCRIPTION OF SYMBOLS 1 Fiber reinforced adhesive sheet | seat which concerns on 1st Embodiment 2 1st peeling sheet which concerns on 1st Embodiment 3 Fiber sheet 4 Fiber reinforced adhesive agent layer 5 2nd peeling sheet which concerns on 1st Embodiment 6 2nd Embodiment Release sheet according to 20 Fiber reinforced adhesive sheet package 21 Fiber reinforced adhesive sheet according to the second embodiment

Claims (10)

A fiber reinforced adhesive sheet in which a release sheet is laminated on both sides of a fiber reinforced adhesive layer obtained by impregnating or laminating a fiber sheet with a one-component adhesive composition that is cured by moisture or ultraviolet rays,
The release sheet is a fiber reinforced adhesive sheet having the moisture or ultraviolet blocking property.   The fiber-reinforced adhesive sheet according to claim 1, wherein at least one of the release sheets has transparency that transmits visible light.   The fiber-reinforced adhesive according to claim 1 or 2, wherein the first release sheet, the fiber sheet, the one-component adhesive composition layer, and the second release sheet are sequentially laminated. Sheet.   The fiber reinforced adhesive sheet according to any one of claims 1 to 3, wherein an end face of at least one side of the fiber reinforced adhesive sheet is subjected to end face sealing so as to have the moisture or ultraviolet blocking property.   The fiber-reinforced adhesive sheet according to claim 4, wherein the end face sealing process is a heat seal process or an adhesive process.   The fiber-reinforced adhesive sheet according to any one of claims 1 to 5, wherein the fiber-reinforced adhesive sheet is a long winding body having a predetermined width direction.   A fiber-reinforced adhesive sheet package in which the fiber-reinforced adhesive sheet according to any one of claims 1 to 6 is hermetically housed in an exterior container having a moisture or ultraviolet blocking property. A method of reinforcing a building using the fiber-reinforced adhesive sheet according to any one of claims 1 to 6,
Peel off one of the release sheets of the fiber-reinforced adhesive sheet,
Adhering the exposed fiber reinforced adhesive layer to the reinforcing surface of the object to be reinforced, pressing from the other release sheet,
A building reinforcement method for curing the fiber-reinforced adhesive layer with the moisture or ultraviolet rays.   A fiber reinforced adhesive sheet in which a release sheet is laminated on both sides of a fiber reinforced adhesive layer impregnated or laminated on a fiber sheet with a one-component adhesive composition that is cured by moisture or ultraviolet rays is a moisture or ultraviolet blocking property. A fiber-reinforced adhesive sheet package that is hermetically housed in an exterior container. A method of taking out a fiber reinforced adhesive sheet from the fiber reinforced adhesive sheet package according to claim 9 and reinforcing a building using the fiber reinforced adhesive sheet,
Peel off one of the release sheets of the fiber-reinforced adhesive sheet,
Adhering the exposed fiber reinforced adhesive layer to the reinforcing surface of the object to be reinforced, pressing from the other release sheet,
A building reinforcement method for curing the fiber-reinforced adhesive layer with the moisture or ultraviolet rays.

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