JP3030765B2 - Cover tape and wall structure for covering joints of wall members - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to bonded joints for obscuration tape及 beauty wall structures of the wall member. More specifically, in the construction of a relatively inexpensive lightweight cellular concrete board used as a wall member of a building, for example, by eliminating the joint between the boards in appearance, for example, a single-plate PC board having a large area is used. Also, the present invention relates to an occluding tape and a wall structure for a joint joint of a wall member for giving a sense of quality in an architectural design such as a reinforced concrete structure and increasing added value.

[0002]

2. Description of the Related Art As a wall member in a building, a concrete board such as a PC board or a lightweight cellular concrete board (AL) is used.
C board) and an extruded cement board. Among them,
Lightweight cellular concrete boards and extruded cement boards are relatively inexpensive, and are mainly used as wall members in construction work aimed at cost reduction. Light-weight cellular concrete boards and extruded cement boards have a lower specific gravity than PC boards, so that instead of using fine aggregates, the aggregates used are brittle in strength and tend to bend or bend. Therefore, in order to obtain a large lightweight and lightweight cellular concrete board or an extruded cement board having a large width and width, it is necessary to increase the structural strength by increasing the thickness. However, in this case, the cost of manufacturing equipment is increased, and the cost is rather increased.

[0003] Therefore, in the construction using a lightweight cellular concrete plate or the like, a large number of plates having relatively small widths are eventually used to join and construct a wall. Further, since the material of the lightweight cellular concrete plate is soft, the corners are easily broken. Therefore, the corners are chamfered at a required angle so that the corners are not easily collapsed. At the time of construction, the joints were filled with a sealing material and finished.

[0004]

However, there are the following problems in the construction using a conventional lightweight cellular concrete plate as described above. (A) The joint portion provided with the sealing material is usually not provided with a protective layer, and the sealing material itself is directly used as a finishing material and is directly exposed to a meteorological environment such as sunlight or rain and wind.
For this reason, dust easily adheres to the joints and mold easily occurs, which makes the joints unsightly with the passage of time, and furthermore, the contamination around the joints easily causes peeling of the finish coating material.

(B) The sealing material is directly affected by ultraviolet light, solar heat, rainwater, etc. for a long period of time, and the sealing material is quickly deteriorated by choking and cracking by ultraviolet light, deformation by temperature movement, and the like. In addition, when the surface of the sealing material is coated together with the wall member, compatibility may be lacked depending on the combination of the surface of the sealing material and the paint. In this case, the peeling or discoloration of the paint occurs, and the joints (joining lines) of the sealing material and the wall member become conspicuous,
The architectural design becomes unsightly and the aesthetics are impaired.

(C) In the case of lightweight cellular concrete, since about 75% of the volume is air bubbles and the cut surface has continuous fine irregularities, water leakage from joints tends to occur easily due to capillary action. If the sealing material is deteriorated and discolored, thinned, or the like occurs, the waterproof function is remarkably reduced due to cracks or the like, and water leaks from joints. Therefore, frequent repairs need to be performed, which increases maintenance costs.

(D) The joint portion, which is a joint portion of a lightweight cellular concrete plate or the like, has a joint-like widened joint width due to the chamfered portion of the lightweight cellular concrete plate.
Many joint lines are clearly visible in appearance. Also, in the case of an extruded cement board, the width is limited to 60 cm inside and outside,
Many joints are visible in appearance. For this reason, it is immediately apparent that an inexpensive lightweight cellular concrete board or an extruded cement board is used as the wall member. Furthermore, as described above, since the dirt spreads from the joints, the building as a whole tends to be seen as a poor building with poor luxury.

(Object) The present invention solves the above-mentioned problems, and makes it difficult to visually recognize a joint joint portion of a wall member, particularly a building using a lightweight cellular concrete plate or an extruded cement plate, This aims to give the building a sense of quality and increase added value. Another object of the present invention is to reduce the maintenance cost by suppressing the aging of the sealing material at the joint of the lightweight cellular concrete board and the extruded cement board, and by preventing the occurrence of water leakage due to cracks.

[0009]

Means for Solving the Problems The constitution of the invention adopted to achieve the above object is as follows. In the first invention, an opaque thin plate formed narrower than the tape main body is adhered to the net-shaped tape main body along the length direction,
On the both sides in the width direction of the tape body is formed an adhesive portion where the obscuring thin plate is not provided, a covering tape covering a joint joint of a wall member, wherein the tape body is formed of a thread-like material, The thread-like material is flatly solidified and formed by a thermoplastic resin, and the tape body is buried or substantially buried in the adhesive layer and is bonded to the covering thin plate in a state where the tape body is joined. It is an obscuring tape for obscuring the part.

In the second invention, an adhesive is applied to the surface of the adhesive portion of the tape body to which the opaque thin plate is adhered, and a release sheet is applied to the surface to which the adhesive is applied. An occulting tape for occluding a joint joint of a wall member according to the first invention.

According to a third aspect of the present invention, there is provided a wall structure, wherein the structure comprises a plurality of wall members which are stretched and connected to a wall surface of a building, and a joint between the wall members. The joint according to the first or second aspect of the present invention, wherein the joint is formed in the sealing joint, the sealing material is filled in the joint, and the joint is covered and adhered between the wall members. And a tape.

The wall members include plaster boards, lightweight cellular concrete boards (ALC boards), cement extrusion boards, exterior boards such as asbestos slate boards and calcium silicate boards, precast concrete, precast concrete boards,
This concept includes concrete and mortar expansion joints. The wall surface of a building is a concept including a roof, a floor surface, a ceiling surface, inner and outer wall surfaces, and the like. The tape body of the obscuring tape is a mesh (mesh type), and the width is usually 30
Preferably, it is in the range of ６０60 mm and the total thickness is 0.2 mm or less.

[0013] The term "net-like" as used in the present invention is a concept that includes not only mesh but also woven or knitted fabrics which have a coarse mesh. What is necessary is that the tape main body is buried in the coating thickness, and the tape thickness and the coating thickness of the adhesive are equalized. The tape body may be entirely buried in the adhesive or may be partially buried in the adhesive.

The obscuring sheet provided on the obscuring tape has a width of 1
It is in the range of 0-50mm, thickness 0.05-0.2m
m (preferably 0.1 mm). If the thickness of the tape body and the concealment thin plate are too large, the step portion becomes noticeable at the time of construction, which is unsightly. On the other hand, if it is too thin, sufficient strength cannot be secured. The adhesive according to the present invention is a concept including a pressure-sensitive adhesive. Also, the layer of adhesive is
This includes the case of a single layer of an adhesive or a pressure-sensitive adhesive and the case of a composite layer of an adhesive or a pressure-sensitive adhesive and another material.

The material used for the tape body is not particularly limited, but it is hardly rusted or deteriorated and has a high tensile strength, for example, a rigid polymer (a wholly aromatic polyester fiber, a wholly aromatic polyamide fiber). Or a flexible polymer, an ultra-high polymerization degree polyethylene fiber, or the like, or a glass fiber. What kind of fiber is used for the warp and the weft constituting the tape body is appropriately selected depending on various conditions such as a construction site, a material used, and the like.

Further, as the thread-like material forming the tape body, a material obtained by twisting fibers of the above-mentioned material is used. In addition,
Threads are not only formed by twisting fibers,
As long as it is linear and can be deformed flat, it may have another structure. The obscuring thin plate of the obscuring tape is used to protect the joints. For example, a thin metal plate such as stainless steel, a glass cloth resin processed sheet, or the like is used. It is preferable to use an obscuring sheet having a coefficient of linear expansion close to the coefficient of linear expansion of the wall member and following a temperature change so that the opaque sheet is hard to be cut or peeled off.

(Operation) Since the covering tape is bonded to the covering thin plate in a state where the net-shaped tape body is buried in the adhesive layer, the covering tape is bonded without being buried using, for example, a double-sided adhesive tape. Or the thickness of the entire covering tape can be made thinner as compared to the case where the tape thickness and the coating thickness of the adhesive are added as in the case of simply bonding a sheet-like tape with an adhesive.

The tape body is formed of a thread-like material, and the thread-like material is flatly solidified and formed of a thermoplastic resin.
Therefore , the thickness of the entire obscuring tape can be further reduced.

An adhesive is applied to the surface of the adhesive portion of the tape body to which the opaque thin plate is adhered, and a release sheet is attached to the surface on which the adhesive is applied. By temporarily removing the joint, temporary fixing to the wall surface can be easily performed, so that workability in covering the joint portion is good.

The joints, which are joints of the wall members constituting the wall structure, are covered by the covering tape and are almost invisible in appearance. Also, since the tape body is a net-like body, the tape body is buried in the coating thickness of the adhesive applied at the time of bonding as described above, and the tape thickness and the coating thickness of the adhesive are assimilated. Therefore, the bonding portion can be sufficiently bonded without being much thicker than the thickness of the tape body. That is, since the step at the bonding portion is small and substantially smooth and inconspicuous, the appearance can be finished more beautifully.

Therefore, a large number of lightweight cellular concrete boards and extruded cement boards were joined and used as wall members.
Even for buildings that can be constructed at low cost, the joints are obscured after painting, and the obscured occluding tape is also inconspicuous, so at first glance it may be necessary to use expensive PC boards or reinforced concrete walls. It has such an appearance. As a result, the added value of the design is increased, and it is possible to prevent the building as a whole from being viewed as a poor building with a poor sense of quality as in the past.

Further, since the joint is covered with the covering tape, the joint is not directly exposed to the outside air.
Aging deterioration of the sealing material due to ultraviolet rays, solar heat, rainwater, etc. is unlikely to progress. That is, since the joint is double waterproofed by the covering tape and the sealing material, the waterproof performance is improved, water leakage from the joint due to cracks or the like is less likely to occur, and the maintenance cost can be reduced.

When the covering tape causes deformation due to external force, temperature change, wet / dry, hardening, etc. on the building structure, an adhesive is applied to the joint joint of the wall member using an elastic epoxy resin or the like. By changing the tensile stress caused by the movement of the joint from the concentration to the dispersion stress, the joint follows the movement of the joint, prevents cracks, and improves durability. Further, since the sealing material is hardly deteriorated, an inexpensive sealing material can be used. Further, it is possible to prevent contamination around the joint and peeling of the finish coating material, such as adhesion of dust to the joint and generation of mold.

[0024]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail with reference to the embodiments shown in the drawings. FIG. 1 is a bottom view of a main part of the obscuring tape according to the present invention, FIG. 2 is a cross-sectional view of the obscuring tape shown in FIG. 1, and FIG. 3 is an explanatory diagram in which main parts of the cross-sectional view shown in FIG. The covering tape 4 is a net-shaped tape body 41.
And an opaque thin plate 42 formed narrower than the tape main body 41 and provided along the longitudinal direction at the center of the tape main body 41 in the width direction. Thus, on both sides of the tape main body 41 in the width direction, the bonding portions 410 where the opaque thin plate 42 is not provided are formed.

In the present embodiment, the tape main body 41 is formed in a net shape by using a warp 411 and a weft 412 which are formed by twisting aramid fibers into a thread, and has a strong tensile strength. The warp 411 and the weft 412 are impregnated with a thermoplastic resin 413, which is heated and pressed to form the warp 411 and the weft 412 together with the resin 413 in a flat and solid state. Note that the resin 413 can be coated on the warp 411 and the weft 412 instead of impregnating them.

The aramid fiber has sufficient strength if it is used at least as the weft 412 of the tape body 41. Other fiber materials used for the warp yarns 411 and the weft yarns 412 include glass fibers. Further, by impregnating the resin 413, it is possible to prevent the shape from being restored due to the elasticity of the yarn. In addition, the resin 413 has a sealing function of preventing misalignment at the time of cutting.

The concealed thin plate 42 is a thin plate made of stainless steel. The tape body 41 is covered with an opaque thin plate 42 by an adhesive.
And is glued. An adhesive is applied to the surface of the cover sheet 42 to provide an adhesive layer 43. Tape body 4
1 is embedded in the adhesive layer 43,
Is set to be substantially the same as the thickness of the tape body 41. In manufacturing, opaque thin plate 4
2, an adhesive layer 43 is formed thereon, and the tape body 4 is formed thereon.
1 (not heat-pressed), and heat-pressing with a roller to flatten the tape body 41 while the adhesive layer 43
Buried in

Further, since the linear expansion coefficients of glass fiber, Kevlar and stainless steel are almost the same, there is no fear of causing distortion or the like after cooling. In the present embodiment, the adhesive to be used is a one-part type epoxy adhesive having low shaking deformation, but is not limited thereto, and may be another adhesive. The dimensions of each part of the covering tape 4 are as follows: the width of the tape body 41 is 67.5 mm, the thickness is 0.12 mm, and the width of the covering sheet 42 is 4 mm.
It is 2.5 mm and the thickness is 0.15 mm.

FIG. 4 is a sectional view of a main part of a wall structure in which a lightweight cellular concrete plate is stretched as a wall member. The wall structure includes a lightweight cellular concrete plate 1 as a wall member,
The joints 2 formed at these joints, the sealing material 3 filled in each joint 2, and the joints 2 are adhered between the lightweight cellular concrete plates 1 so as to cover each joint 2. And the covering tape 4. Acrylics are the most common sealing materials, and modified silicones, acrylic urethanes, polyurethanes and the like are also used.

A backup member 5 made of rubber or styrene foam is disposed between the lightweight cellular concrete plates 1 and 1. The joint part 2 is filled with a sealing material 3 on the outside of the backup material 5, whereby the lightweight cellular concrete 1 and 1 are joined. The corners of the lightweight cellular concrete plates 1 and 1 are chamfered at an angle of 45 degrees.
0 and 10 are provided.

The joint 2 is covered with a covering tape 4. The method of bonding the covering tape 4 is as follows. Note that this method is not limited to the covering tape 4 according to the present embodiment, but may be a method in which the tape body and the covering sheet are bonded with a double-sided adhesive sheet, a method in which the tape body is not flattened as described above, and the like. Can also be used.

(1) The primer 12 is applied to the surface of the lightweight cellular concrete board 1. (2) Over the entire length of the joint 2, the covering sheet 4
2 is covered with the covering tape 4, and the adhesive 4
10 is fixed to the wall surface of the lightweight cellular concrete plate 1 using a tucker pin or the like, and the covering tape 4 is temporarily fixed. (3) An adhesive is applied to the adhesive portions 410 on both sides of the covering tape 4 to an appropriate thickness to form an adhesive layer 11. At this time, the adhesive is also applied to the surface of the lightweight cellular concrete plate 1, and the net-like bonding portion 410 is entangled with the adhesive layer 11 and is buried.

As a result, a joint space 21 is formed on the inner surface side of the covering tape 4. Further, the adhesive portion 410 of the tape body 41 is buried in the thickness of the adhesive layer 11 and the tape thickness and the thickness of the adhesive layer 11 are assimilated, so that the adhesive portion is much thicker than the thickness of the tape body 41. In this case, unlike the case where the tape thickness and the applied thickness of the adhesive are added as in the case of bonding a sheet-like tape with an adhesive, for example, the step at the bonded portion is reduced. The thickness of the tape main body 41 is 0.12 mm, and the thickness of the opaque thin plate is 0.15 mm.
mm, the thickness of the step at the portion where the obscuring tape 4 is stuck is very small. In addition, the adhesive is exposed on the surface, so that drying is relatively quick.

Then, a waterproof urethane-based, cement-based, acrylic-based coating or the like serving as a wall surface paint is sprayed on the entire wall surface. This makes the obscuring tape 4 almost inconspicuous, and the entire wall surface looks like a single large plate. Therefore, it has an appearance like a wall using a seemingly expensive PC board or a wall made of reinforced concrete.

Since the joint 2 is covered with the covering tape 4, the joint 2 is not directly exposed to the outside air.
Aging deterioration of the sealing material 3 due to ultraviolet rays, solar heat, rainwater, or the like does not easily progress. That is, the joint 2 is covered with the obscuring tape 4
And the sealing material 3 provides double waterproofing, so that waterproofing performance is improved, and water leakage from joints due to cracks and the like is less likely to occur.

FIG. 5 is a sectional view of a main part of a wall structure having a plaster board stretched as a wall member. The wall structure is for interior use, and is a plaster board 1a as a wall member.
And a joint part 2a formed at the joint thereof, and a plaster board 1a so as to cover each joint part 2a.
And an obscuring tape 4a stuck therebetween. A glass cloth resin processed sheet 42a, which is an opaque thin plate, is adhered to the tape body 41a of the obscuring tape 4a.
An adhesive is applied to one surface of the tape main body 41a to form an adhesive layer 43a, and a resin sheet 42a made of glass cloth is attached in a state of being buried in the adhesive layer 43a.

In a state before use, the bonding portion 410
A release sheet (not shown) is attached to the pressure-sensitive adhesive layer 43a. According to the covering tape 4a of this structure, the temporary fixing to the wall surface of the plaster board 1a can be easily performed by peeling the release sheet, so that the workability when covering the joint portion 2a is good. The present invention is not limited to the illustrated embodiment, but various modifications are possible within the scope of the claims.

[0038]

The present invention has the above configuration and has the following effects. (A) Since the covering tape is bonded to the covering thin plate in a state where the net-shaped tape body is buried in the adhesive layer, it is compared with a case where the covering is not buried using a double-sided adhesive tape, for example. Alternatively, the thickness of the entire covering tape can be reduced as compared with the case where the tape thickness and the coating thickness of the adhesive are added as in the case of simply bonding a sheet-like tape with an adhesive.

(B) The tape body is formed of a thread, and the thread is flatly solidified with a thermoplastic resin, so that the thickness of the entire covering tape can be further reduced.

(C) An adhesive is applied to the surface of the adhesive portion of the tape body to which the opaque thin plate is adhered, and a release sheet is attached to the surface to which the adhesive is applied. ,
Since the temporary fixing to the wall surface can be easily performed by peeling the release sheet, the workability when covering the joint portion is good.

(D) The joints, which are the joints of the wall members constituting the wall structure, are covered by the covering tape and are not visible in appearance. In addition, since the tape body is a net-like body, the tape body is buried in the applied adhesive thickness at the time of bonding, and the tape thickness and the adhesive thickness are assimilated. The portion can be sufficiently adhered without being much thicker than the thickness of the tape body. That is, unlike the case where the tape thickness and the coating thickness of the adhesive are added as in the case where the sheet-like tape is simply adhered with the adhesive, the step at the adhesive portion becomes smaller and less noticeable. It can be beautifully finished. Therefore,
Even if the building can be constructed inexpensively, using a large number of lightweight cellular concrete boards and extruded cement boards as wall members, the joints are obscured after painting, and the obscured obscuring tape is also noticeable after painting. Since it has no appearance, it has the appearance of a wall using a seemingly expensive PC board or a reinforced concrete wall. As a result, the added value of the design is increased, and it is possible to prevent the building as a whole from being viewed as a poor building with a poor sense of quality as in the past.

(E) Since the joint is covered with the covering tape, the joint is not directly exposed to the outside air.
Aging deterioration of the sealing material due to ultraviolet rays, solar heat, rainwater, etc. is unlikely to progress. That is, since the joint is double waterproofed by the covering tape and the sealing material, the waterproof performance is improved, water leakage from the joint due to cracks or the like is less likely to occur, and the maintenance cost can be reduced.

(F) When deformation is given to the building structure by external force, temperature change, wet / dry, hardening, etc. by the covering tape, an adhesive is applied to the joint joint of the wall member by using an elastic epoxy resin or the like. By changing the tensile stress due to the movement of the joint from the concentration to the dispersion stress, the joint follows the movement of the joint, prevents cracks, and improves durability. Further, since the sealing material is hardly deteriorated, an inexpensive sealing material can be used. In addition, it is possible to prevent contamination around the joints, such as adhesion of dust to the joints and generation of mold, and peeling of the finish coating material.

[Brief description of the drawings]

FIG. 1 is a bottom view of a main part of an obscuration tape according to the present invention.

FIG. 2 is a cross-sectional view of the obscuring tape shown in FIG. 1;

FIG. 3 is an explanatory view in which main parts of the cross-sectional view shown in FIG. 2 are enlarged.

FIG. 4 is a cross-sectional view of a main part of a wall structure in which a lightweight cellular concrete plate is stretched as a wall member.

FIG. 5 is a cross-sectional view of a main part of a wall structure in which a plaster board is stretched as a wall member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lightweight cellular concrete board 10 Chamfer part 11 Adhesive layer 12 Primer 2 Joint part 21 Joint space part 3 Sealing material 4 Covering tape 41 Tape body 410 Bonding part 411 Warp 412 Weft 413 Resin 42 Covering thin plate 43 Adhesive layer 5 Backup material 1a Plaster board 2a Joint 4a Cover tape 41a Tape body 410a Adhesive part 42a Resin processed sheet of glass cloth 43a Adhesive layer

Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) E04B 1/62-1/72 E04F 13/02-13/08 E04F 19/02 B32B 1/00-35/00

Claims (3)

(57) [Claims] An opaque thin plate formed narrower than the tape main body is adhered to the net-shaped tape main body along the length direction, and the opaque thin plates are provided on both sides in the width direction of the tape main body. An occulting tape for occluding a joint joint of a wall member, on which an adhesive portion not formed is formed, wherein the tape main body is formed of a thread, and the thread is solidified and formed flat by a thermoplastic resin. The covering tape for covering a joint joint of a wall member, wherein the tape body is buried or substantially buried in an adhesive layer and adhered to the covering sheet. 2. An adhesive is applied to the surface of the adhesive portion of the tape body to which the opaque thin plate is adhered, and a release sheet is attached to the adhesive applied surface. An occluding tape for occluding a joint joint of the wall member according to claim 1 . 3. A wall structure, comprising: a plurality of wall members stretched and joined to a wall surface of a building; and a joint joint formed at a joint between the wall members. and parts, and the sealing material is filled in the joint joints, that by obscuration of the bonding joints and a, and obscuration tape according to claim 1 or 2, wherein are bonded between said wall member Characteristic, wall structure.