JP2002213060A - Substrate material for plastered wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a substrate material capable of quickly drying a plastering material in the construction of a plastered wall such as plaster wall and preventing the cracking of the wall surface after drying the wall. SOLUTION: This substrate material 1 is formed by using a plywood 2 as base. A group of through-holes 3 is provided in the plate surface of the substrate material 1, and a spacer 5 is provided on the reverse side thereof. When the plastering material 10 is applied onto the outer surface of the substrate material 1, it is partially protruded to the reverse side. Since the part facing an air layer 12 on the reverse side is also dried through the through-holes 3 when the surface of the wall is dried, the drying can be hastened. Further, the substrate material 1 is firmly connected to the plastering material 10 through the part penetrated to the through-holes 3, the cracking can be prevented, and the peeling of the plastering material can be also prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plywood base material for a painted wall formed by applying plaster, gypsum plaster, dolomite plaster, mortar and the like.

[0002]

2. Description of the Related Art As a base material of this type, a product (trade name: Ruscat) in which a waterproof film and a cement layer are laminated on the surface of a structural plywood is commercially available. This base substrate can directly apply a coating material such as mortar, plaster, or plaster plaster to the cement layer on the surface, and does not need to lath a base plate unlike a conventional wall construction method.

[0003]

As described above, the conventional base material for a painted wall using structural plywood requires a lot of labor for construction compared to a case where a base plate, a lath and a lath are used as a wall base. Can be omitted, and also helps to improve the strength of the wall. However, most of the walls finished using this type of base material for a coated wall have a waterproof film formed on the base material, so that the coating material such as plaster is dried only from the surface side. Therefore, it took a long time to dry and a long time to build a painted wall. Further, although the cause is not clear, cracks will occur on the surface of the painted wall after construction. In particular, when an air-hardened coating material such as plaster or dolomite plaster which solidifies by reacting with carbon dioxide in the air is used, cracks cannot be avoided. For this reason, the repair work had to be performed again after the construction, which required extra labor and cost, and was unsatisfactory not only for the constructor but also for the constructor. After the repair, the repair mark remains on the wall, and the appearance of the wall may be impaired.

[0004] It is an object of the present invention to provide a base material for a painted wall, which can promote drying of the painted wall and can significantly shorten the construction period as compared with the conventional painted wall construction method. An object of the present invention is to prevent cracks from being generated on the surface of the finished plastered wall, so that there is no need to perform repair work again after the construction, extra labor and cost can be saved by that much, and the wall immediately after completion is completed. The proper surface condition can be maintained for a long time.
An object of the present invention is to provide a base material for a painted wall.

[0005]

According to the present invention, there is provided a base material for a plywood 2 which is formed on the basis of a plywood 2 and whose outer surface is coated with a coating material 10 as shown in FIG. A group of through holes 3 for facilitating drying of the coated wall material 10 is provided on the plate surface.

As shown in FIGS. 2 and 3, a spacer 5 is provided on the back surface of the base material 1 so as to be in contact with the base plate 9 to secure a gap. The group of through holes 3 is evenly arranged on the plate surface. A non-perforated area 4 is secured at each of the peripheral edge of the rectangular plywood 2 and the center in the longitudinal direction of the plate, and a group of through holes 3 is formed only on the plate surface surrounded by the non-perforated area 4. . The base material is a plywood 2 for structure, a waterproof layer 15 provided on the outer surface thereof, and a cement layer 16 provided on the outer surface of the waterproof layer 15.
It can be composed of

[0007]

According to the present invention, since a group of through-holes 3 for promoting drying is provided on the plate surface of the base substrate 1 constructed based on the plywood 2, the base substrate 1 In a state where the coating wall material 10 is applied to the surface of the base material 1, the coating wall material 10 is dried from the outer surface side and also from the back surface side of the base substrate 1 through the through holes 3. Therefore, the drying speed of the coated wall material 10 can be remarkably increased, and the construction period can be shortened by that much, and the overall cost required for constructing the outer wall can be reduced. For example, in the case of a plastered wall, it is difficult to dry the coated wall material with the conventional base material, so that it took four weeks to complete the construction, which took one week. A part of the coating wall material 10 applied to the base substrate 1 fills the group of through holes 3 and further protrudes to the back surface side of the plywood 2. The portion protruding to the back surface side and the portion filling the through hole 3 are dried and solidified earlier than the others to prevent the unsolidified portion from slipping down. further,
In a state where the entire wall is dry, the base substrate 1 and the painted wall material 10 are firmly bonded and integrated via the portion filling the through-holes 3, so that a relative relationship between the two is obtained. The displacement can be reliably prevented. Therefore, even in the event of an earthquake or the like, it is possible to prevent the painted wall material 10 from peeling off from the base substrate 1 and to improve the seismic strength of the painted wall.

Further, according to the base substrate 1 of the present invention, although the mechanism is not clear, cracks do not occur on the surface of the painted wall after construction, and there is no need to perform repair work again after construction. This saves extra labor and cost, and keeps the proper surface condition of the wall immediately after completion for a long time. According to the present inventor's opinion, since the drying proceeds from both the back surface of the base substrate 1 and the surface of the coated wall material 10, the drying of the coated wall material 10 is performed substantially uniformly in the thickness direction. It is considered that the bias of the internal stress due to the contraction of
The coating wall material 10 is firmly fixed to the base material 1 by this, and the deformation of the coating wall material 10 in the direction along the wall surface can be prevented, so that the surface of the coating wall is prevented from cracking after construction. it seems to do. In particular, it was possible to prevent cracks from occurring on the surface of the plaster wall for a long time after completion, even for plaster walls and plaster walls using a hardened plaster material that reacts with carbon dioxide in the air such as dolomite plaster and solidifies. .

According to the base material 1 in which the spacers 5 are arranged on the back surface of the plywood 2, a gap is secured between the plywood 2 and the ground board 9 by the amount of the spacers 5, and air is blown on the back side of the plywood 2. Since the layer 12 can be secured, the base material 1
Is disposed, and when the coated wall material 10 is applied to the outer surface thereof, a part of the coated wall material 10 is securely protruded to the back side of the base material 1, and the base material 1 and the coated wall material 10 In addition to improving the bonding strength, the air layer 12 formed between the base material 1 and the base plate 9 promotes the drying of the coated wall material 10 applied to the base material 1 and shortens the construction period. By the way, spacer 5
Can be fixed in advance on the side of the base plate 9.

According to the base material 1 in which the group of through holes 3 are evenly arranged on the plate surface, when the base material 1 is used as a load-bearing wall, the strength of the plywood 2 varies due to the difference in the position of the plate surface. And the base material 1 and the painted wall material 1
It is also possible to avoid that the bonding strength with zero varies due to the difference in the position of the plate surface.

A base material 1 composed of a rectangular plywood 2
When using as a part of the load-bearing wall, the peripheral edge of the plate surface is fixed to a pillar, a stud, a body edge, or the like. Further, in the plywood 2 fixed to a pillar or the like, moment is concentrated on the central portion in the longitudinal direction of the plate surface, and the plywood 2 is easily deformed by bending. Therefore, a non-porous area 4 is secured at each of the peripheral edge of the plate surface of the rectangular plywood 2 and the center in the longitudinal direction of the plate surface, and a group of through holes 3 is formed only for the plate surface surrounded by the non-porous area 4. By avoiding this, the strength of the base substrate 1 is prevented from being extremely reduced.

According to the base material 1 for a painted wall composed of the structural plywood 2, the waterproof layer 15 provided on the outer surface thereof, and the cement layer 16 provided on the outer surface of the waterproof layer 15, 1
Since the waterproof layer is provided on itself, it is not always necessary to dispose a waterproof sheet or the like on the inner surface of the base material 1, and the labor for construction can be saved by that much.

[0013]

1 to 3 show an embodiment of a base material for a painted wall according to the present invention. In FIG. 1, an undersubstrate 1 is constructed using a commercially available structural plywood 2. This plywood 2 has a width of 910 mm, a height of 1820 mm and a thickness of 9.5.
It is a standard structural plywood of mm, and a group of through holes 3 for facilitating drying of the coated wall material 10 described later is provided on the plate surface. More specifically, a non-porous area 4 is secured at each of the periphery of the plywood 2 and the center in the longitudinal direction of the plate surface, and the through-holes 3 are arranged in rows and columns on the plate surface surrounded by the non-porous area 4. Set up. The width of the non-porous region 4 at the peripheral portion is about 150 mm, and the width of the non-porous region 4 at the center in the longitudinal direction is about 300 mm. The reason why the width of the central non-perforated region 4 is increased is to cope with the fact that a moment due to an external force tends to be concentrated at the center of the plate surface.

The diameter of each through hole 3 was 15 mm, and the vertical and horizontal adjacent pitches were 150 mm so that the through holes 3 were evenly distributed on the surface of the plywood 2. This allows
A total of 50 through holes 3 are formed on the plate surface. A spacer 5 is bonded and fixed to the periphery of the back surface of the plywood 2. Further, a cross-shaped spacer 5 is adhesively fixed to the center of the plate surface in the vertical and horizontal directions. The spacer 5 is made of a band-shaped plastic plate, and has a thickness of 3 to 5 mm.

FIG. 2 shows an example of a painted wall using the base material 1 described above. Reference numeral 7 denotes a column, 8 denotes a rim, and 9 denotes a rim 8.
It is a field base plate fixed to. Although not shown, the field board 9
Attach a waterproof sheet to the outer surface of. Alternatively, a waterproof layer is provided on the outer surface of the base plate 9 in advance. The base substrate 1 is fixed to the base plate 9 so that the spacer 5 provided on the back surface faces the base plate 9. The painted wall material 10 is applied to the outer surface of the base material 1 in this state. The painted wall material 10 may be formed of only one layer as shown in FIG. 3 or may be formed of a plurality of layers of a base layer and one or more finishing layers. The plaster wall material 10 in the present invention includes plastering materials such as plaster, plaster plaster, dolomite plaster, magnesium cement, gypsum cement, cement mortar, and sprayed tiles such as acrylic tiles sprayed by a spraying device. (Also known as Bontile).

As described above, the coating material 1 is applied to the outer surface of the base material 1.
When 0 is applied, a part of the portion is filled in the through hole 3 and then protrudes to the back surface side of the plywood 2 and, as shown in FIG. 3, rides on the opening peripheral wall on the back surface side of the through hole 3. This riding part 1
The spacer 5 is provided in order to form the air layer 12 reliably between the base material 1 and the base plate 9. The coated wall material 10 applied to the base substrate 1 is dried from the surface side, and the portion facing the air layer 12 through the group of through holes 3 is also dried at the same time. Therefore, the time required for the entire coated wall material 10 to dry is approximately half as compared with the case where the conventional base material is used, and the construction period required for constructing the coated wall can be significantly reduced. In particular, in the case of the air-hardened coating material 10, the components of the coating material react with the carbon dioxide in the air and solidify. Therefore, the larger the area of the coating material 10 exposed to the air, the more the dryness. Speed can be increased.

The portion of the base material 1 that protrudes to the back surface side and the portion that fills the through hole 3 are dried and solidified earlier than others, and support the unsolidified portion, so that they are not solidified. Prevents the part from slipping under external force. In a state where the entire coated wall material 10 is completely dried, the base substrate 1 and the coated wall material 10 are firmly bonded to each other through the portion filling the through-holes 3 and integrated. Therefore, the relative displacement between the two 1 and 10 can be reliably prevented, and the painted wall material 10 can be reliably prevented from peeling off from the base material 1 in the event of an earthquake, for example, and the seismic strength of the painted wall can be improved. .

In the above embodiment, the case where the base material 1 is composed of only the structural plywood has been described. However, various functions may be added to the structural plywood 2 to form the base material 1. it can. For example, as shown in FIG. 4, a waterproof coating is applied to the front surface of the plywood 2 to form a waterproof layer 15, so that the base material 1 itself can have waterproofness. In this case, the through hole 3 is formed so as to penetrate both the waterproof layer 15 and the plywood 2. Further, as shown in FIG. 5, a waterproof layer 15 and a cement layer 16 are formed on the front surface of the plywood 2 to form the base material 1. In this case as well, the plywood 2 and the waterproof layer The through-hole 3 is formed in a state of penetrating through each of the cement layer 15 and the cement layer 16. If necessary, a thin metal plate can be attached to either side of the plywood 2,
Also in this case, the through hole 3 is formed so as to penetrate both the metal plate and the plywood 2.

The through hole 3 does not need to be a round hole, but can be formed in any shape such as a polygon or a groove. The size and the type of shape need not be constant, and various sizes and sizes or a plurality of types may be mixed. Often,
Although the base substrate 1 is used in the rectangular state described in the embodiment, the plywood 2 shown in FIG. 1 can be used in a square state by dividing the plywood 2 into two at the center in the longitudinal direction. In that case, it is sufficient to fix the spacer 5 along the periphery of the plywood 2. As the spacer 5, a frame, a rod, or the like can be applied in addition to the band. The arrangement pattern may be a pattern other than the embodiment. A stud can be driven into the plywood 2 to form a spacer.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view of a base substrate.

FIG. 2 is a partially cutaway front view of a painted wall.

FIG. 3 is a sectional view taken along line AA in FIG. 2;

FIG. 4 is a cross-sectional view showing another embodiment of the base material.

FIG. 5 is a cross-sectional view showing still another different embodiment of the base substrate.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 base substrate 2 plywood 3 through hole 4 non-porous area 5 spacer 10 painted wall material 12 air layer

Claims (5)

[Claims] 1. It is formed on the basis of plywood 2,
A base material 1 for a painted wall whose outer surface is coated with a painted wall material 10, wherein a group of through-holes 3 for facilitating drying of the painted wall material 10 pass through the plate surface of the base material 1. A base material for a painted wall, characterized in that: 2. A spacer 5 is provided on the back surface of the base material 1 to contact the base plate 9 to secure a gap.
The base material for a coated wall according to the above. 3. The base material for a painted wall according to claim 1, wherein the group of through holes 3 is uniformly arranged on the plate surface. 4. A peripheral edge of a plate surface of the rectangular base material 1,
A non-perforated area 4 is secured at each of the center of the plate surface in the longitudinal direction, and a group of through holes 3 is formed in the plate surface surrounded by the non-perforated area 4.
The base material for a painted wall according to claim 1, wherein a base material is formed. 5. The undersubstrate 1 according to claim 1, comprising a plywood 2 for a structure, a waterproof layer 15 provided on an outer surface thereof, and a cement layer 16 provided on an outer surface of the waterproof layer 15. Base material for painted walls.