JP2005036562A - Joint treating method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a joint treating method solving a problem of cracking of a joint part. <P>SOLUTION: In this joint treating method, wall surface materials 1, 1 are butt-attached to an external wall or an internal wall of a building, and a joint part 3 having a joint groove 4 widened in truncated chevron shape or V-shape is formed on the surface side of a mating part 2 of the wall surface materials 1, 1. Joint cement or putty 5 is filled in the joint groove 4 of the joint part 3 and smoothed, and then a tape 6 is bonded to the surface side of the joint cement or putty 5. The tape 6 is formed in mesh shape or plane shape, and an adhesive 8 is applied to or impregnated into the whole back face side (wall surface side) of the tape 6 to ooze out to the surface side. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a joint processing method.

The conventional joint processing method is configured as shown in FIGS. 12 and 13, and the joint part c of the joint part b of the wall surface material a and the wall surface material a is generally chamfered into a V shape or a C shape. After adhering the tape body d to the surface of the joint part c, the joint material for gypsum board (hereinafter referred to as joint cement) or the synthetic resin emulsion putty (hereinafter referred to as putty) e is passed through the mesh of the tape body d. Was applied several times with a spatula to fill the joints, and then the surface was finished with a finishing putty.
Japanese Utility Model Publication No. 51-12334

  In the known example, since the tape is fixed to the wall surface material with the adhesive, the putty bonding work to the wall material and the putty handling work are made in one step, so that the joint from the stitch on the front side of the tape to the joint groove Cement or putty will be rubbed, and the pressure when rubbing will be greater than the adhesive strength of the tape, so the center of the tape will bend to the back of the joint groove, and this deflection will be `` slack '' If the tape is slack, the tape's reinforcing effect will be lost, and the wall material on the left and right sides of the joint will open, and the slack of the tape will move to the upper side of the joint groove and harden against this movement of the tape. There is a problem that cracks occur because the joint cement or putty that cannot be followed.

The present invention provides a joint treatment method that essentially eliminates the cause of cracks by preventing the occurrence of slack in the tape 6 and butting the wall materials 1 and 1 against the outer or inner wall of the building. Then, a joint portion 3 having joint grooves 4 extending in a V shape or a V shape is formed on the surface side of the mating portion 2 of the wall materials 1 and 1, and joint cement or putty 5 is filled in the joint grooves 4 of the joint portion 3. Then, a joint treatment method is adopted in which the tape 6 is adhered to the surface side of the joint cement or putty 5.
Further, according to the present invention, the wall materials 1 and 1 are abutted against each other on the outer wall or the inner wall of the building, and the end surfaces of the mating portions 2 of the wall materials 1 and 1 are formed in a substantially right-angled shape so as to have a C shape or a V shape. The joint portion 3 having no joint groove 4 is formed, and the step 20 generated on the left and right wall materials 1 of the joint portion 3 is filled with joint cement or putty 5 to be smooth, and then the joint cement or putty 5 This is a joint treatment method in which the tape 6 is bonded to the front surface side.
Further, in the present invention, the tape 6 is formed in a mesh shape or a surface shape to form a joint processing method.
Further, the present invention is a joint processing method in which the tape 6 is applied or impregnated with the adhesive 8 on the entire back surface (wall surface side) so as to ooze out to the front side.
Further, the present invention is a joint processing method in which the elastic paint 15 is applied without applying putty on the surface of the tape 6.

In the first aspect of the present invention, the tape 6 is bonded to the joint cement or putty 5 of the joint groove 4 smoothed in advance, so that the occurrence of cracking can be prevented and the cause of cracking can be essentially eliminated.
In the invention of claim 2, the joint cement or putty 5 filled in the joint groove 4 of the joint part 3 can be omitted, and the number of process steps can be reduced and the cost can be reduced.
In the invention of claim 3, since the joint cement or putty 5 is filled in the joint groove 4 or the step 20 in advance, the joint cement or putty 5 is not filled from the front side of the tape 6, and the mesh-like or planar tape 6 is filled. The degree of freedom in selecting the tape 6 can be improved.
In the invention of claim 4, the adhesive force of the coating material for fixing the tape 6 to the front side of the tape 6 can be increased, the joint cement or putty 5 can be eliminated, the number of process steps can be reduced, and the cost can be reduced.
In the invention of claim 5, not only can the joint cement or putty 5 for fixing the tape 6 be unnecessary, but the tape 6 can be fixed to the elastic wall material 1, and the response force (followability) to the deformation of the joint portion 3. The joint portion 3 is not conspicuous.

The structure for carrying out the method of the present invention will be described with reference to the drawings. 1 is a wall material composed of plaster board, lightweight cellular concrete board, cement extruded board, asbestos slate board, calcium silicate board, precast concrete board, and others. When the wall materials 1 and 1 are abutted against each other on the outer wall or the inner wall of the building, a joint portion 3 is formed on the surface side of the mating portion 2 of the wall materials 1 and 1.
The shape of the edge on the surface side of the mating portion 2 of the wall surface material 1 is arbitrary, but if it is formed in a C shape or a V shape, a joint groove 4 spreading in a C shape or a V shape is formed in the joint portion 3.

Thus, the joint groove 4 of the joint portion 3 is filled with a joint cement or putty 5 for filling in advance and is smoothed. The joint cement or putty 5 is preferably made of a synthetic resin emulsion putty because it has adhesive force.
Next, the tape 6 is bonded to the surface of the joint cement or putty 5.
That is, conventionally, after the tape 6 is bonded to the front side of the joint groove 4, the joint cement or the putty 5 is rubbed and filled from the front side of the tape 6 into the joint groove 4 through the stitches of the tape. When vibration occurs due to the slack of the tape 6, the left and right wall materials 1 are separated, and the joint cement or putty 5 is cracked.

Therefore, in this application, since the joint groove or groove 5 is previously filled with the joint cement or putty 5 to smooth the joint portion 3 and then the tape 6 is bonded to the front side of the joint cement or putty 5, the tape 6 is not loosened. First, the cause of cracking is essentially eliminated.
The configuration of the tape 6 is arbitrary, but as an example, the tape 6 is formed by twisting aramid fibers that are not likely to be rusted or deteriorated, or forming the tape body 7 with a mesh made of alkali-free glass fibers. Further, since it is not necessary to rub joint cement or putty 5 into the joint groove 4 from the front side of 7, 7 may be a surface tape without stitches or holes such as stainless steel.

The tape 6 is coated or impregnated with the adhesive 8 on the back side (wall surface side) of the tape body 7, and the adhesive 8 is slightly applied on the front side or is not applied, but the back side adhesive 8 is slightly applied. The release paper 9 can be adhered and fixed to the surface side of the tape main body 7 at the same time as enhancing the adhesion with the coating material to be applied to the front side.
The release paper 9 is formed to have the same width as that of the tape body 7 or a wide area. The pressure-sensitive adhesive 8 is a water-resistant acrylic, rubber, polyethylene, urethane, or other pressure-sensitive adhesive, and adheres to the wall material at room temperature.

The tape main body 7 has a mesh-like simple substance (single-layer structure) and a mesh-like simple substance and is attached to the center in the width direction on the back side of the mesh-like simple substance by adhering an occultation film 10 narrower and parallel to the tape main body 7. May be. The covering film 10 is formed of a synthetic resin or other material in a transparent or translucent or woven (net) shape.
The obscuration film 10 is adhered by an adhesive 8 provided on the back side of the tape body 7, but depending on the adhesive 8 used, the occultation film 10 may be difficult to adhere. The adhesive layer 11 may be formed.

Further, when an adhesive layer is formed on the back side of the covering film 10, the covering film 10 may be applied or impregnated on the entire surface, or the adhesive 8 and / or the adhesive layer 11 may ooze out.
The tape 6 is wound in the form of a roll 12 like a normal cellophane tape so that the wrapping film 10 side is the inner side (wall side), and is adhered to the wall surface while being stretched from one end. 9 is peeled off and used. When the tape main body 7 is constituted by a single mesh, there are those having the release paper 9 and those having no release paper 9.

  Thus, an elastic paint 15 such as an elastic epoxy resin is applied thinly on the surface side of the tape 6 from which the release paper 9 has been peeled off. The elastic paint 15 strengthens the adhesive force of the tape 6 to the wall material 1 and conceals the tape 6. Also, by applying the elastic paint 15, it is possible to omit the putty coating for fixing the tape 6 to the wall surface material 1 which has been performed on the surface side of the conventional tape 6, and the putty itself for fixing the conventional tape 6 itself. However, in the present application, the elastic coating material 15 is applied instead of this, so that the crack can be removed from the cause of the occurrence and the crack can be prevented.

Thus, a top finishing putty (not shown) is applied to the surface of the elastic coating 15, the surface of the top finishing putty is polished, and the outer surface of the polished surface is a waterproof polyurethane, cement, If the inner wall is painted with an acrylic or other finishing paint 17 and the inner wall is coated with a finishing paint 17 such as a synthetic resin emulsion, the joint portion 3 of the mating portion 2 of the wall materials 1 and 1 can be easily made inconspicuous. It is possible to create a beautiful wall surface where the traces of the joint portion 3 have disappeared.
In this case, if the wall surface of the wall surface material 1 is not mirror-finished, a polishing step is not required, and therefore the finishing paint 17 may be directly applied to the surface of the elastic paint 15 or a finish such as a cloth sticking may be applied.

8 to 11 show another embodiment, in which the shape of the mating portion 2 of the wall surface material 1 is formed in a substantially right-angled surface called “square edge”, and the eyes of the mating portions 2 of the left and right wall surface materials 1 are formed. The ditches 4 are not formed. Therefore, the joint cement or putty 5 filling the joint groove 4 can be omitted, and the total cost is reduced.
In this case, even if the shape of the mating portion 2 is formed on a substantially right-angled surface of the “square edge” and the joint groove 4 is eliminated, the left and right wall materials 1 are front and rear (in the thickness direction of the wall material 1) when the wall material 1 is applied. ) And a slight step 20 is generated in the joint portion 3, and in order to eliminate the step 20, the joint cement or putty 5 for filling the joint groove 4 is omitted. The putty 5 is filled in the step 20 in advance and smoothed, and then the tape 6 is bonded.

Next, the operation of each embodiment will be described.
When the end surfaces of the wall surface material 1 and the wall surface material 1 are abutted against each other on the outer wall or the inner wall of the building, the joint 3 on the front side of the mating portion 2 of the wall surface material 1 and the wall surface material 1 has an open V-shape or C-shaped joint grooves 4 are formed.
Next, the joint cement or putty 5 is filled in the joint groove 4 of the joint portion 3, and after the filled joint cement or putty 5 is hardened, the joint portion 3 is adjusted to be uneven and smoothed.
Next, when the tape 6 in the shape of a roll 12 is pulled out and brought into contact with the surface of the smooth joint cement or putty 5, it is pulled out and brought into contact.
In this case, since the adhesive 8 is coated (impregnated) on the back side of the tape body 7 of the tape 6, the tape 6 is directly bonded to the wall materials 1 and 1 when pulled out from the roll 12 together with the release paper 9. Then, the release paper 9 may be peeled off.

Since the tape 6 adheres to the smooth surface of the joint cement or putty 5, there is no need to rub the joint cement or putty 5 into the joint groove 4 from the front side of the tape 6 as in the prior art. Therefore, the tape 6 is loosened after bonding, and the left and right wall surface materials 1 are separated from each other to eliminate cracks.
That is, the tape 6 is originally made of a material that does not expand or contract. However, when the joint cement or the putty 5 is rubbed into the joint groove 4 from the front side of the tape 6 as in the prior art, the pressure when rubbed is applied to the tape 6. By becoming larger than the adhesive force, the central portion of the tape 6 will bend toward the back side of the joint groove 4, and the amount of this deflection will become “slack”. If the tape 6 is loose, the tape reinforcing effect will be lost. Then, the left and right wall materials of the joint are opened, and the tape 6 is loosened and moved to the upper side of the joint groove (vibration or expansion / contraction), and the joint cement or putty 5 that is hardened with respect to the movement of the tape 6 follows. Since it cannot be done, it will crack.

  In this way, cracks are generated in the joint cement or putty 5 part, and this is caused by looseness of the tape 6. In this application, the joint groove 4 is filled with the joint cement or putty 5 in advance and then smoothed. Since the tape 6 is bonded to the front side of the cement or putty 5, the tape 6 does not sag and the cause of cracking can be essentially eliminated.

Thus, an elastic paint 15 such as an elastic epoxy resin or an internal / external elastic base treatment material is applied to the surface of the tape 6, and a top coat finish putty that slightly covers this is applied to the surface of the elastic paint 15. After that, if the surface is finished with a waterproof polyurethane-based, cement-based, acrylic-based or other coating on the outer wall, synthetic resin emulsion coating on the inner wall, cross-bonding, etc., the wall materials 1, 1 The joint portion 3 of the joint portion 2 can be easily made inconspicuous, and a beautiful wall surface with traces of the joint portion 3 disappearing can be formed.
In this case, the top coat finishing putty may be thinned as much as necessary when a polishing step for mirror finishing the wall surface of the wall material 1 is necessary. This is different from thickening putty coating for fixing to the material 1.

That is, the putty for fixing the tape 6 is related to the coating thickness of the putty, and the covering must be thickly coated on the tape 6, so that it is more than 10 times the polishing finish putty for polishing. Not only is the amount necessary, but the appearance is not only beautiful and the appearance is not beautiful, but the thick application of this fixing putty causes cracks on the front side of the tape 6 like the joint cement or putty 5 described above.
In the present application, the adhesive putty 8 and the elastic paint 15 of the tape 6 itself eliminate the need for a fixing putty, which not only provides a sharp and flat finish, but also facilitates the work and contributes to shortening the work time. Reduce the amount of putty used as much as possible.

  Thus, in the second embodiment, as described above, conventionally, even if the tape 6 is bonded to the surface of the joint groove of the joint portion 3 and the joint cement or putty is imprinted and filled from the front side of the tape 6 to the joint groove, Since the joint cement or putty is difficult to be sufficiently filled under 6 and the joint cement or putty is dried and hardened, the joint cement or putty rises more than the thickness of the tape on the surface of the wall material 1 at the time of filling. It will stand out without being smooth.

However, as described above, in the present application, the joint groove or the putty 5 is previously filled in the joint groove 4 and then the tape 6 having the adhesive 8 is adhered, and the elastic paint 15 is applied to the surface of the tape 6. 6 and elastic paint 15 can be made very thin, 0.07 mm or less in the case of the knitted tape body 7 within the thickness range of the tape, and 0.12 mm or less in the case of the tape body 7 to which the covering film 10 is bonded. Conventionally, even when the shape of the mating portion 2 that has been used only for underlaying is a “square edge” wall surface material 1 having a substantially right-angled surface, it can be used as a wall surface material 1 for the outer wall of a building or an inner wall.
Therefore, it is not necessary to construct the joint portion 3 of the mating portion 2 of the wall material 1, and the joint cement or putty 5 that fills the joint groove 4 is also formed because the joint groove 4 of the mating portion 2 of the left and right wall materials 1 is not formed. It can be omitted, and the process man-hours can be significantly reduced to lower the total cost.

  Thus, in the square edge wall material 1, even if the mating portion 2 is formed in a substantially right-angled plane and the joint groove 4 is eliminated, when the left and right wall materials 1 are struck against the outer wall or the inner wall of the building, the front and rear (wall material 1 The step difference 20 is formed between the right and left wall materials 1 of the joint portion 3 by slightly shifting in the thickness direction of the joint portion 3, so that the joint cement or putty 5 filling the joint groove 4 is omitted, but the step 20 is eliminated. For this purpose, the uneven cement joint cement or putty 5 is filled in the step 20 in advance and smoothed, and the tape 6 is adhered to the surface of the smoothed step 20 (joint portion 3) as described above.

Even in this case, since the step 20 is adjusted in advance with the joint cement or the putty 5, it is stretched more loosely than when the tape 6 is bonded along the step 20, and the tape 6 that causes cracking also in this point. Does not cause slack.
Thus, after the tape 6 is bonded, the same operation as that described above such as application of the elastic paint 15 is performed.

Sectional drawing which attached the wall surface material (Example 1). Sectional drawing of an example of the state which filled joint cement or putty in the joint groove (Example 1). Sectional drawing of an example of the state which adhere | attached the tape (Example 1). Sectional drawing of an example in the state which apply | coated the elastic coating material (Example 1). Sectional drawing of an example in the state which applied the coating material for finishing (Example 1). The figure which shows an example of the manufacture state of a tape. The perspective view of the state which adhere | attaches a tape. Sectional drawing which attached the wall surface material (Example 2). Sectional drawing of an example in which the joint groove | channel was filled with joint cement or putty (Example 2). Sectional drawing of an example in the state which adhere | attached the tape (Example 2). Sectional drawing of an example in the state which apply | coated the elastic coating material and the finishing coating material (Example 2). The perspective view of the state which paints (rubs) joint cement or putty from the outer surface of the tape main body of a well-known example. FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Wall material, 2 ... Joint part, 3 ... Joint part, 4 ... Joint groove, 7 ... Tape body, 5 ... Joint cement or putty, 8 ... Adhesive, 9 ... Release paper, 10 ... Covering film, 11 ... Adhesive Layer, 15 ... elastic paint, 17 ... finishing paint, 20 ... step.

Claims (5)

Wall joints 1 and 1 are abutted against each other on the outer wall or inner wall of the building to form joints 3 having joint grooves 4 extending in the shape of a V or V on the surface side of the mating part 2 of the wall materials 1 and 1, A joint treatment method in which a joint cement or putty 5 is filled in the joint groove 4 of the joint portion 3 to make it smooth, and then a tape 6 is bonded to the surface side of the joint cement or putty 5. Wall surfaces 1 and 1 are abutted against each other on the outer wall or inner wall of the building, and the end surfaces of the mating portions 2 of the wall materials 1 and 1 are formed in a substantially right-angled shape and have joint grooves 4 extending in a C shape or V shape. The joint 3 or the putty 5 is filled in the step 20 generated on the left and right wall surfaces 1 of the joint 3 and smoothed, and then the tape 6 is put on the surface of the joint cement or putty 5. Bonding joint processing method. The joint processing method according to claim 1 or 2, wherein the tape 6 is formed in a mesh shape or a planar shape. 4. The joint processing method according to claim 1, wherein the tape 6 is coated or impregnated with the adhesive 8 on the back surface side (wall surface side) and oozed to the front side. The joint processing method according to claim 1, wherein the elastic coating 15 is applied to the surface of the tape 6 without applying putty.

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