JPH02503B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for forming a corner portion of a wall using a plate material having a textured surface.

In recent years, hard wood cement boards, plywood, etc., which are obtained by mixing shredded hard wood chips and water with a cement composition and molding this into a predetermined shape, have been widely used as wall materials for structures such as houses. has been done.

When forming a corner part of a structure using such a wall material, for example, if the cross-sectional structure is made by joining two hard wood cement boards 1, 1 with their ends perpendicular to each other, as shown in FIG. At the joint between the hard wood cement boards 1 and 1, the end 2 of one of the boards is exposed.

However, the structure of this board is such that in the areas near the front and back surfaces, the grain size of the wood chips is fine, so the proportion of cement is high, and in the center, which accounts for most of the wood, the grain size of the wood chips is coarse, and the proportion of wood chips is high. Because of this, the waterproofing of the wood pieces is insufficient. Similarly, in the case of plywood, the waterproofness of the end of the wood is inferior. Furthermore, exposing the end of the wood is not aesthetically pleasing and may create a step at the joint.

Therefore, as shown in Fig. 2, a substantially V-shaped groove is carved in two pieces of hard wood cement board 1 that are orthogonal to each other, and a corner member 1b is formed so that the joint part forms an obtuse angle. The plates 1a and 1c have approximately V-shaped groove surfaces 3.
A method was proposed for forming the corners of the exterior walls of houses by gluing them together.

The corner portions of such a structure are formed by forming substantially V-shaped grooves 4 in the hard wood cement board 1, as shown in FIG. That is, two parallel substantially V-shaped grooves 4 are formed in the hard wood cement board 1 using a cutter (not shown). Next, adhesive is applied to the inner surface 3 of this substantially V-shaped groove. Finally, both sides of the hard wood cement board 1 are lifted in the direction of the arrow, and the adhesive is heated and hardened while maintaining the shape of the corner portions as shown in FIG.

In the work of forming the approximately V-shaped groove 4 in the hard wood cement board 1, it is difficult to accurately control the cutting depth of the cutter, so in order to prevent the hard wood cement board from cracking, etc. An adhesive backing sheet 5 is attached to the back side of the .

When performing such gluing work, hard wood cement board 1
If there is a recess 6 on the surface of the hard wood cement board that is in contact with the adhesive backing sheet 5, as shown in FIG. The adhesive applied to the inner surface of the groove 4 flows into the recess 6, resulting in poor adhesion due to insufficient adhesive, and poor appearance due to adhesion of the adhesive to the recess 6.

The present invention solves the above-mentioned problems, and aims to provide a method for forming a corner portion of an outer wall by forming a substantially V-shaped groove in a plate material having a recessed portion on the surface.

That is, the method of forming the corner portion of the outer wall of the present invention involves inserting a packing material in advance into a recess formed on the surface of a board material, adhering an adhesive backing sheet from the top surface of the packing material, and then pasting the adhesive backing sheet from the back surface of the board material. The packing material is cut together with the plate material by cutting a substantially V-shaped groove that reaches the sheet.
The present invention is characterized in that an adhesive is applied to the inner surface of the substantially V-shaped groove, and the plate materials divided by the substantially V-shaped groove are adhered via the substantially V-shaped groove inner surface.

The details of the present invention will be explained below with reference to the drawings showing one embodiment thereof.

FIG. 6 is a partial side view of a hard wood cement board showing an embodiment of the method of the present invention.

In FIG. 6, an adhesive backing sheet 5 is pasted on the surface of a hard wood cement board 1 in order to cut and form a substantially V-shaped groove 4 therein. Furthermore, a packing material 7 made of, for example, foamed urethane is inserted into a recess 6 on the surface of the hard wood cement board 1, which is substantially perpendicular to the V-shaped groove 4.

The packing material 7 may be fixed to the inner surface of the recess 6 via an adhesive. Moreover, if the packing material 7 is integrated with the adhesive backing sheet 5, the pasting work is easy.

If the packing material 7 is adhered to the inner surface of the recess 6, when cutting and forming the substantially V-shaped groove 4, the effect of lining the hard wood cement board 1 is high, and the damage caused by the recess of the hard wood cement board 1 is prevented. It can be prevented.

The adhesive backing sheet 5 is preferably a thick woven fabric impregnated with a rubber adhesive. Alternatively, a plastic film coated with an adhesive may be used. It is preferable that the thickness of the adhesive backing sheet 6 is sufficiently thick so that the blade of the cutter can completely cut the hard wood cement board 1 and further cut into the adhesive backing sheet 6 when forming the approximately V-shaped groove 4. .

As shown in FIG. 4, the hard wood cement board 1 with substantially V-shaped grooves 4 formed thereon is coated with adhesive on the inner surface of the substantially V-shaped grooves 4 while the adhesive backing sheet 5 is attached. It is then heated and hardened into the corner shape. The adhesive backing sheet 5 is then peeled off from the hard wood cement board 1. For this reason, the adhesive backing sheet 5 preferably has an adhesive layer with good removability. The same applies to the adhesive layer formed on the packing material 7.

FIG. 7 shows the packing material 7 cut together with the hard wood cement board 1. Since the packing material 7 completely fills the opening 8 of the concave portion 6 at the bottom of the approximately V-shaped groove 4, when the adhesive is applied to the inner surface of the approximately V-shaped groove 4, the adhesive may run off or the inner surface of the concave portion 6 may be coated. It doesn't stick either.

If the packing material 7 is removed from the recess at the end of the adhesive process, the recess will be protected from stains caused by the adhesive and a beautiful finish will be achieved. After the corner portion is completed, the surface of the hard wood cement board 1 is painted, etc., and becomes the outer wall of a house or the like.

In addition, the reference numeral 9 in the figure is an adhesive reservoir provided on one or both of the substantially V-shaped groove surfaces 3.

When adhesive processing is performed with the glue reservoir 9 provided in this way, the adhesive applied to the substantially V-shaped groove surface 3 is held in the glue reservoir 9, and both edges of the substantially V-shaped groove surface 3 are bonded together. When heated to solidify the adhesive, this moderately overflows onto the adhesive surface to prevent adhesion failure due to insufficient adhesive. In this way, there is no need to apply excess adhesive to the extent that it extends to surfaces other than the adhesive surface, resulting in a beautiful finish.

According to the method for forming a corner portion of a wall of the present invention described above, the process of cutting and forming a substantially V-shaped groove on the back surface of a plate material and the subsequent bonding process are simple, and the adhesive can be applied to the recessed part of the surface of the plate material. Since it does not wash away, poor adhesion can be prevented. Further, the substantially V-shaped groove cutting surface and the recessed portion of the plate material can be protected from contamination by the adhesive.

This makes it possible to form a wall corner with a beautiful appearance.

Furthermore, if a glue reservoir is provided on the surface of the approximately V-shaped groove, sufficient adhesive can be applied to the joint, and since the adhesive is retained in the glue reservoir, there will be insufficient adhesion, resulting in poor adhesion. Never. Also, the adhesion is approximately V
Since this is done at both edges of the groove, it has sufficient strength.

[Brief explanation of drawings]

Figure 1 is a partial top view of the corner part of a conventional wall.
FIG. 2 is a partial top view of a corner portion suitable for implementing the present invention, FIGS. 3 and 4 are partial side views illustrating the method of forming the corner portion, and FIG. 5 is a hard wood piece cement suitable for implementing the present invention. 6 and 7 are partial side and perspective views of a hard wood cement board which is an embodiment of the method of the present invention; FIG. 1... Hard wood cement board, 4... Approximately V-shaped groove,
5... Adhesive backing sheet, 6... Concavity, 7...
Packing material.

Claims (1)

[Scope of Claims] 1. A packing material is inserted in advance into a recess formed on the surface of a plate material, and an adhesive backing sheet is adhered from the top surface of the packing material, and then an approximately V shape that reaches the adhesive backing sheet from the back surface of the board material is formed. The packing material is cut together with the plate material by cutting a shaped groove, and an adhesive is applied to the inner surface of the substantially V-shaped groove, and the plate material divided by the substantially V-shaped groove is cut through the inner surface of the substantially V-shaped groove. A method of forming a corner part of a wall, characterized by gluing. 2. A method for forming a corner portion of a wall according to claim 1, wherein the packing material is adhered to the recessed portion of the plate material using an adhesive.