JP3452976B2 - Joint sealing structure and joint sealing method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint seal structure and a joint seal construction method used for fixing and finishing to a building such as a window glass, an outer wall of a building, and other similar boards in the construction work of a building such as a high-rise building. Is.

[0002]

2. Description of the Related Art Conventionally, in a glazing method for a window portion of a high-rise building, a wet method using a sealant using a condensation reaction type material such as a silicone resin, a modified silicone, and polysulfide, and a fixed gasket method have been adopted. In general, construction of windows for high-rise buildings requires work at a high place from the outer wall of the building, the construction is affected by the weather and the cost of construction is large, and depending on the structure of the outer wall of the building, work can be done without hanging the gondola. It is often impossible.

[0003]

In the sealant construction method in the construction that must be performed under such external conditions, the wet construction method in which the sealant S is filled by the formwork construction method as shown in FIGS. 12 and 13. Because of this, it takes a long time to cure, and construction may be impossible in the winter depending on the humidity and temperature conditions.
The sealant joint may pollute the wall surface due to dust pollution or secondary pollution. In addition, a gasket construction method in which a fixed gasket is fitted has been tried, but the airtightness and watertightness of the gasket are affected by many factors such as compression set characteristics, weather resistance, heat resistance, ozone resistance, and temperature dependence of hardness. If the performance is expected to decrease and there is basically no watertight function, the isostatic method,
There is a drawback that the inflowing water drainage method is forced and the cost is high, and it is not sufficiently satisfied in terms of airtightness and watertightness. Especially, the fixed gasket is easily displaced due to wind pressure, vibration, and thermal stress, and sticking out easily occurs. There are many problems such as method, dimensional accuracy of standard gasket, aluminum sash, and absorption of dimensional tolerance of glass plate. The present invention eliminates these drawbacks of the conventional sealant construction method and gasket construction method, greatly improves the workability by the dry construction method, and even in the winter season at relatively low temperature and low humidity,
A joint seal structure that can be constructed without being affected by the weather, optimizes the maintenance of the airtightness and watertightness of joints, reduces the construction period and man-hours, does not cause dust pollution, and contributes to the prevention of outer wall pollution. Another object of the present invention is to provide a joint sealing method with a simple structure and at a low cost.

[0004]

SUMMARY OF THE INVENTION According to the present invention, a belt-like elastic gasket is provided on both sides with an additive such as a vinyl siloxane, a reinforcing agent, a heat-resistant agent, and an adhesion improver, which contains a Si--H crosslinking agent as a main component. A combination of a joint material integrally bonded with an addition reaction type adhesive layer and a reaction material having a material layer containing vinyl siloxane as a main component and containing a reinforcing agent, an adhesion improver and a reaction catalyst on a carrier tape. Is.

[0005]

[Function] When performing joint sealing, between the adherends such as glass plate, metal plate or ceramic plate, for example, in the joint seal portion,
A joint material of a silicone rubber elastic body is inserted by being bonded and transferred by transferring an addition reaction type adhesive layer containing a Si—H crosslinking agent as a main component and a reaction catalyst layer containing a vinylsiloxane as a main component. The reaction of the bonding layer starts and it hardens in a short time,
The adherend and joint material are bonded and solidified to be integrated, and the dry construction method using this addition reaction type silicone ensures accurate and stable required airtightness and watertightness without being severely restricted by external conditions. In addition to shortening the construction period, it is possible to easily prevent pollution and reduce the construction process.

[0006]

EXAMPLE An example of the outer wall of a high-rise building shown in FIGS. 1 and 2 will be explained as an example of the present invention. An elastic gasket made of silicone rubber or foam whose elasticity, strength and hardness can be appropriately selected.
1. An addition reaction type adhesive layer 2 containing Si-H cross-linking material as a main component and containing additives such as vinyl siloxane, a reinforcing agent, a heat-resistant agent, and an adhesion improver is integrally joined to both side surfaces of the other elastic body, A release sheet 3 is formed on the addition reaction type adhesive layer 2 if necessary.
And a reaction material 7 having a reaction catalyst layer 5 containing vinyl siloxane as a main component and containing a reinforcing agent, an adhesion improver, and a reaction catalyst on a carrier tape 6 on the addition reaction type adhesive layer 2. The joint seal structure is a combination of the above.

The addition reaction type adhesive layer 2 has room temperature or 6
It has a low temperature curing reaction of 0 ° C. or lower, preferably 5 ° C. to 40 ° C., and reacts with vinyl silane to be transferred and a platinum catalyst. The elastic gasket surface has a high cross-linking density and the glass on the outer surface of the glass plate. , Or on the adherend such as aluminum on the sash surface, the structure of the gradient addition reaction with a low cross-linking density improves the adhesive force with the elastic gasket and prevents the occurrence of internal strain with the adherend. To prevent. For example,
The addition reaction type adhesive layer 2 is made of Si-
An H-crosslinking agent as a main component, a Si-H / vinylsilane molar ratio of 1.2 to 2.5, and a reinforcing agent [5 to 30 (% by weight)] such as silica, quartz powder or alumina, and an adhesion improver,
It is composed of an additive [3 to 20 (wt%)] such as a heat-resistant agent and a flow regulator, and is formed on the side surface of the silicone rubber elastic gasket 1 by coating, impregnation, extrusion or the like.

[0008]

[Chemical 1]

[0009]

[Chemical 2]

The reaction catalyst layer 5 is composed mainly of vinyl siloxane of Chemical formula 2, a reinforcing agent (5 to 30% by weight) such as silica, quartz powder and alumina, and a platinum catalyst (0.1 to 0.1% by weight).
1.0% by weight) and additives (5 to 50% by weight) such as an adhesion improver, a heat-resistant agent, and a flow control agent, and formed on the carrier tape 6 by coating, impregnation, extrusion, calendering, etc. In addition, the reaction catalyst layer 5 is pressed and integrated with the addition reaction type adhesive layer 2 at the time of use, and is cured by reaction to be adhered.

Both side surfaces of the elastic gasket 1 of the joint material 4 may be flat surfaces, but as shown in FIG. 3, the joint surface is a silicone rubber elastic body having a rough uneven surface and is added to the rough uneven surface. The reaction catalyst layer 5 of the reaction material 7 is attached to the one obtained by transferring and integrating the reactive adhesive layer 2, and the carrier tape 6 is peeled off for use. In this case, the reaction material 4 is, for example, a package sealed in an airtight packaging bag (not shown) or a vacuum package vacuum-sealed, and the reaction catalyst layer 5 is peeled off from the carrier tape 6 by opening at the time of construction. What makes them convenient.

The reaction material 4 may be in the form of a narrow sheet, but as shown in FIGS. 4 and 5, the reaction catalyst layers 5 are formed on one surface of the carrier tape along the longitudinal direction of both sides to a predetermined width.
5 are bonded in parallel at intervals, and a pair of curves is provided on a carrier tape 6 between the reaction catalyst layers 5 and 5, and a supporting hole 9 for pulling out the carrier tape is provided between the folding curves. It is also possible to use the one.

[0013] Thus, at the time of performing a joint seal for compressing and inserting the elastic joint material 4 into the joint gap 12, the addition reaction type adhesive layer 2 having Si—H crosslinking agent as a main component, which is provided on both sides of the joint material 4, When the reaction catalyst layer 5 containing vinyl siloxane as a main component is bonded and cured by reaction, the release sheet 3 is removed from the addition reaction type adhesive layer 2 of the joint material 4 as shown in FIGS. After the reaction catalyst layer 5 of the carrier tape 6 is pressure-bonded to the reaction type adhesive layer 2, the carrier tape 6 is peeled from the reaction catalyst layer 5, and the addition reaction type adhesive layer 2 to which the reaction catalyst layer 5 is bonded is attached. So that it faces the eye ground,
It is preferable to compress and insert it into the joint gap, and to intervene at the boundary surface between the fixing plate 11 of the adherend in the building 10 and the joint material 4 to carry out reaction hardening. In this case, when the fixed plate members 11 of the adherend are pressed against each other, the structure is as shown in FIG.

In addition, the fixed plate members 11 and 11 arranged opposite to each other are connected to each other by pressing and fixing the reaction catalyst layer 5 on the facing joint surface of each fixed plate member 11 and peeling the carrier tape 6. The release sheet 3 is removed from one of the addition reaction type adhesive layers 2 of the joint material 4, and the addition reaction type adhesive layer 2 is pressed and fixed to the reaction catalyst layer 5 of the one fixing plate 11 before the joint material 4
The release sheet 3 is removed from the other addition reaction type adhesive layer 2, and the reaction catalyst layer 5 of the other fixed plate body 11 is pressed and integrated with the addition reaction type adhesive layer 2 together with the fixed plate body 11 on both sides of the joint material 4. The addition reaction type adhesive layers 2 and 2 can also be reactively cured. (Figure 7)

Further, as shown in FIG. 8, the release sheet is removed from the addition reaction type adhesive layer 2 of the joint material 4 (FIG. 8a),
The carrier tape 6 is bent along the outer side of the joint material into a U-shape from a folding curve 8 so that the reaction catalyst layer 5 of the carrier tape 6 is bonded onto the addition reaction type adhesive layer 2, and both sides of the joint material 4 are bent. (FIG. 8b), and then the addition reaction type adhesive layer 2 to which the reaction catalyst layer 5 is attached faces the joint surface,
The carrier tape 6 is compressed and inserted into the joint gap so that the carrier tape 6 is on the outside (FIG. 8c), and then the carrier tape 6 is pulled outward and pulled out from the joint gap to separate the addition reaction method adhesive layer and the reaction catalyst layer. It is also effective as a construction method to interpose on the boundary surface between the adherend and the bonding member in the state of being pressed and to cure and react to seal the joint (FIG. 8d).

Further, in an example of application to an aluminum sash glass window, as shown in FIGS. 9 to 11, the reaction catalyst layer 5 is pressed and fixed on both surfaces of the glass plate 13 and the facing surface of the aluminum sash 14, respectively, to thereby form a carrier tape. 6 is peeled off, and the joint material 4 is joined to at least one of the joint surfaces via the one additional reaction adhesive layer 2 of the joint material 4 so as to be preliminarily attached to the outer surface of the glass plate or the sash. The other addition reaction type adhesive layer 2 is attached to the glass plate 13 or the aluminum sash 14
And the glass plate 13 is placed on the setting block 15 in the aluminum sash, the backer material 16 is inserted between the aluminum sashes on the inner surface of the glass plate, and the same as above. A conventional wet sealant construction method (FIGS. 12 and 13) in which the joint material 17 is compression-charged as a post-installed gasket and the addition reaction type adhesive layers on both sides of the joint material 17 are reactively cured by the joined reaction catalyst layers Compared to), there is less influence of humidity, less influence of temperature, curing time (construction period) takes 3 to 4 weeks, it takes only 1 to 4 days, and the bonding strength can be increased 3 to 5 times. Helps prevent dust pollution and oligomers.

In FIG. 10, the outer surface of the glass plate 13 is
The joint material 4 to which the reaction catalyst layer is attached or applied is fitted, and a silicone sealant 18 is driven in place of the joint material 17 to be fitted on the inner surface.

In the example of FIG. 11, the glass plate 13 is placed on the setting block 15 of the aluminum sash 14 in advance, and then the joint material 4, the backer material 16 and the joint material 17 are fitted and reaction-cured. , The joint material 4 in advance the glass plate 1
It is also possible to pre-populate 3 and install.

A surface material (not shown) such as a metal foil, an Al foil, or a gas barrier layer may be attached to the outer surface of the elastic gasket 1 of the joint material 4.

Table 1 is a comparison of the function and construction method between the method of the present invention and the conventional method.

[0021]

[Table 1]

[0022]

INDUSTRIAL APPLICABILITY According to the present invention, an addition reaction type adhesive containing Si-H cross-linking agent as a main component and additives such as vinyl siloxane, a reinforcing agent, a heat-resistant agent, and an adhesion improver on both sides of a belt-like elastic gasket. Airtightness is achieved by combining the joint material with the layers joined together and the reaction material that has a reaction catalyst layer containing vinyl siloxane as a main component, a reinforcing agent, an adhesion improver, and a reaction catalyst on the carrier tape. ， The watertightness is greatly improved, and the vibration resistance can be properly secured, and the dimensional accuracy is easy and the weather resistance, heat resistance, and ozone resistance are maintained, and the stable sealing effect is obtained, and the construction is also possible. It is simple and easy to work in high places, shortens the curing time, helps prevent pollution, and realizes significant reduction in construction costs and labor saving.
In addition, the joint seal construction method of the present invention eliminates various drawbacks of the conventional sealant construction method and gasket construction method, and greatly improves the workability by the dry construction method. It is possible to carry out the construction without any damage, to properly maintain the airtightness and watertightness of joints, reduce the construction period and the number of man-hours, and prevent dust pollution, which also contributes to the prevention of outer wall pollution.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing an embodiment of the present invention, in which (a) shows a state before construction, (b) shows a release sheet removed state, and (c) shows a bonding and joining state.

2 is a vertical cross-sectional view showing a construction state in a joint between high-rise outer walls in the example of FIG. 1, (a) before insertion, (b) after insertion, (c).
Indicates a fixed and integrated state.

FIG. 3 is a vertical cross-sectional view showing another embodiment of the present invention, (a)
Shows the state before bonding and (b) shows the state after bonding.

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

5 is a bottom view taken along line I-I of FIG.

FIG. 6 is a vertical cross-sectional view showing construction steps (a) and (b) according to another embodiment of the present invention.

FIG. 7 is a construction process (a) of still another embodiment of the present invention.
It is a longitudinal cross-sectional view showing (b).

8 is a vertical cross-sectional view showing construction steps (a) to (d) of the example of FIG.

FIG. 9 is a partial vertical cross-sectional view showing steps (a) to (d) for constructing a glass window.

FIG. 10 is a partial vertical cross-sectional view showing other construction steps (a) to (d) of the glass window.

FIG. 11 is still another construction step (a) of the glass window.
It is a part longitudinal cross-sectional view which shows (d).

FIG. 12 is a vertical cross-sectional view of a part of a conventional sealant method.

FIG. 13 is a partial vertical cross-sectional view showing a process of a sealant method for a conventional glass window.

[Explanation of symbols]

1 Elastic gasket 2 Additional adhesive layer 3 Release sheet 4 joint materials 5 Reaction catalyst layer 6 carrier tape 7 Reactive material 10 buildings 11 Fixed plate material 12 joint recess 13 glass plate 14 Aluminum sash 15 setting blocks 16 backer material 17 joint materials

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-6-108608 (JP, A) JP-A-7-76655 (JP, A) JP-A-7-291677 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) E06B 3/54-3/88

Claims (9)

(57) [Claims] 1. A belt-shaped elastic gasket is provided on both sides of the gasket.
A joint material containing a Si-H crosslinking agent as a main component and an addition reaction type adhesive layer integrally including additives such as vinyl siloxane, a reinforcing agent, a heat-resistant agent, and an adhesion improving agent, and a vinyl siloxane as a main component, and reinforced. A joint seal structure comprising a combination of a reaction catalyst layer containing an agent, an adhesion improver, and a reaction catalyst on a carrier tape. 2. The joint material is such that the joint surface of the joint material is an uneven rough surface.
A silicon rubber elastic body formed on the rough surface
The joint seal structure according to claim 1, wherein the addition reaction type adhesive layer is integrated by transfer . 3. The carrier material is provided on one side of the carrier tape.
Along the lengthwise direction on both sides, the reaction catalyst layers are spaced in parallel with a specified width.
And the catalyst between the reaction catalyst layers.
The rear tape has a pair of folding lines and a supporting hole between the folding lines.
Example was according to claim 1 or 2 joint sealing structure according. 4. The reaction material is enclosed in an airtight packaging bag.
Opened or vacuum-sealed vacuum packaging, opened at the time of construction
Then, peel off the reaction catalyst layer from the carrier tape and use it as a joint material.
The joint seal structure according to claim 2 or 3, which is to be transferred . 5. An eye for compressing and inserting an elastic joint material into a joint gap.
Si-H racks provided on both sides of the joint material when the ground seal is installed
Mainly composed of crosslinking agent, vinyl siloxane, reinforcing agent, heat resistance
Reaction type adhesive layer containing additives such as adhesives and adhesion improvers
And vinyl siloxane as the main component, reinforcing agent, adhesion improvement
Prepare the reaction catalyst layer containing the agent and reaction catalyst on the carrier tape.
When the reaction material obtained above is bonded to the reaction catalyst layer and is cured by reaction
A carrier tape on the addition reaction type adhesive layer of the joint material.
After pressure-bonding the reaction catalyst layer of, the carrier tape
Addition reaction by peeling from the reaction catalyst layer and pasting the reaction catalyst layer
Compressed insertion into the joint gap so that the mold adhesive layer faces the joint
Or, the boundary surface between the adherend and the joint material by pressing the adherends together.
A joint seam characterized by being intercalated and cured by reaction.
Le construction method . 6. When a joint seal is formed by compressing and inserting an elastic joint material into a joint gap, a Si-H cross-linking agent provided on both sides of the joint material as a main component , vinyl siloxane, a reinforcing agent, and heat resistance.
Addition reaction type adhesive layer containing additives such as adhesives and adhesion improvers
The addition reaction type adhesive layer of the joint material integrally joined with vinyl siloxane as a main component, a reinforcing agent, an adhesion improver, and a reaction catalyst.
Reaction material having a reaction catalyst layer containing a medium on a carrier tape
In the reaction cured it is bonded to the said response catalyst layer, contraposed of
The reaction catalyst layers are pressed onto the facing joint surfaces of the adherend.
Put on the carrier tape and peel off the carrier tape.
One addition reaction type adhesive layer as the reaction catalyst layer of one adherend
After fixing by pressure, the other side of the adhesive layer
The reaction catalyst layer of the adherend is integrated with the adherend by pressure welding.
The joint sealing method is characterized in that the addition reaction type adhesive layers on both sides of the joint material are cured by reaction. 7. When a joint seal is formed by compressing and inserting an elastic joint material into a joint gap, the main component is a Si—H crosslinking agent provided on both sides of the joint material , vinyl siloxane, a reinforcing agent, and heat resistance.
Addition reaction type adhesive layer containing additives such as adhesives and adhesion improvers
The addition reaction type adhesive layer of the joint material integrally joined with vinyl siloxane as a main component, a reinforcing agent, an adhesion improver, and a reaction catalyst.
Reaction material having a reaction catalyst layer containing a medium on a carrier tape
In the reaction curing was of joining the said response catalyst layer, joint fillers
The reaction catalyst layer of the carrier tape on the addition reaction type adhesive layer of
Carrier tape along the outside of the jointing material
It was bent into a U shape and covered on both sides of the joint material.
Then, the adhesive layer with the reaction catalyst layer attached to it faces the ground.
And compress it in the joint gap so that the carrier tape is on the outside.
After inserting it, pull the carrier tape outward and
The adhesion reaction layer and the reaction catalyst are removed from the gap.
Interposed on the boundary surface between the adherend and the joint material in the state of pressure contact with the layer
Joint sealing method which comprises reacting cured by. 8. The removal of the carrier tape is a cap
Insert and support the jig in the through hole formed in the rear tape, and
The joint sealing method according to claim 7, wherein the joint sealing method is pulled out from the gap . 9. An eye for compressing and inserting an elastic joint material into a joint gap.
Si-H racks provided on both sides of the joint material when the ground seal is installed
Mainly composed of crosslinking agent, vinyl siloxane, reinforcing agent, heat resistance
Addition reaction type adhesive layer containing additives such as adhesives and adhesion improvers
The addition reaction type adhesive layer of joint material joined together, and vinyl
Siloxane as the main component, reinforcing agent, adhesion improver, reactive catalyst
Reaction material having a reaction catalyst layer containing a medium on a carrier tape
When the reaction catalyst is bonded to the reaction catalyst layer of
Touch reaction respectively in pairs facing surfaces of the double-sided and aluminum sash plate
The medium layer is pressed and fixed, and the carrier tape is peeled off.
Addition type of joint material on either joint surface even if not
Joining the joint material through the adhesive layer
Pre-attached to the sash surface and the other addition reaction type of joint material
Adhesive layer on glass plate surface or aluminum sash reaction catalyst layer
Joined, on the setting block in the aluminum sash,
Place the glass plate on the aluminum plate
A backer material is inserted between the sushi and the same joint material as above.
Compressed and inserted as a retrofit gasket, on both sides of the joint material
Reaction curing with the addition reaction type adhesive layer
A joint sealing method that is characterized by