JPS6122097B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a plate-shaped building material in which a sheet-like material that improves the physical and mechanical performance and construction performance of the plate-shaped building material is adhered to the back side of the plate-shaped building material.

Wooden board materials such as plywood, particle board, and hardboard, inorganic board materials such as asbestos slate, pulp cement board, glass fiber reinforced cement board, gypsum board, and asbestos board, and metallic board materials such as colored steel board and aluminum board. When used as an exterior wall of a building, when rainwater hits the surface directly, wood-based boards have a mechanism that prevents water from penetrating, as the wood itself absorbs water and expands, filling small gaps and holes. In the case of inorganic boards, the water absorption and swelling performance of the base material itself is lower than that of wood, so the surface of the board must be covered with a film such as paint to prevent water from permeating.

With metallic board materials, the base material itself is not water permeable, but since the base material does not have elastic recovery power, water often enters the interior through nail holes or joints between the board materials during construction. Note that water intrusion through nail holes and joints between boards is the same for inorganic boards as for metallic boards.

In particular, with inorganic board materials for exterior walls, even if the surface is covered with a paint film, the inner pillars and rims can corrode due to water permeation through pinholes and nail holes in the paint film, causing unexpected damage. There are also many. For this reason, some inorganic board materials are coated with a paint film on the surface and also have a waterproof paper with a thin synthetic resin film formed on the paper surface attached to the back to prevent water from penetrating.

However, even if waterproof paper is attached to the back side of an inorganic board, if nailing is done from the surface, the board and waterproof paper have almost no elastic recovery power, so water intrusion from around the nails cannot be prevented. If the construction base has even the slightest unevenness, there are drawbacks such as the board material itself not being easily deformed, making it impossible to perform smooth construction, and the board material being prone to cracking due to the impact force during nailing.

Therefore, the present invention solves the above problems by attaching a sheet-like material made of a combination of a foamed synthetic resin sheet having open cells with cushioning properties and a non-foamed sheet having flexibility and waterproof properties to the back side of the plate material. This is the solution.

The present invention will be described in detail with reference to drawings which are embodiments. In FIGS. 1A and B, 1 is a board material, which is an inorganic board material such as asbestos slate, pulp cement board, gypsum board, glass fiber reinforced cement board, etc. This refers to metallic plates such as copper plates and aluminum plates, but does not exclude wood-based plates or composite plates of wood and inorganic materials.

2 is a foamed synthetic resin sheet that has open cells that have cushioning properties, and is a type of foam that has continuous cells that have elastic recovery power, such as a polyethylene resin foam sheet, a polypropylene resin foam sheet, a polyurethane resin foam sheet, or a vinyl chloride resin foam sheet. Use a synthetic resin sheet.

Examples of the flexible and waterproof non-foamed sheet 3 include sheets made of polyethylene resin, polypropylene resin, polyvinyl chloride resin, polyurethane resin, etc., or sheets made of the above synthetic resin on the surface of paper or nonwoven fabric. Coated or impregnated products are listed.

A method for constructing a sheet-like product by combining a foamed synthetic resin sheet 2 having open cells and a non-foamed sheet 3 having flexibility and waterproofness includes bonding each of the sheets 2 and 3 with an adhesive, A method such as heat fusion is used.

In the present invention, the sheet materials 2 and 3, which are a combination of a foamed synthetic resin sheet 2 with open cells and a non-foamed sheet 3, are attached to the back surface of the plate 1 because of the cushioning of the foamed synthetic resin sheet 2 with open cells. The non-foamed sheet 3 improves the closeness of the non-foamed sheet 3 to nails 5, etc. during construction by utilizing its elastic recovery power, and also absorbs the unevenness of the construction base. and,
Since the foamed synthetic resin sheet 2 has continuous cells, if moisture enters even from a part of the sheet 2, it will gradually move inside.
This is to improve the waterproof effect of the sheet-like materials 2 and 3 by combining them with the non-foamed sheet 3 having waterproof properties. In addition, as a combination of the foamed synthetic resin sheet 2 having open cells and the non-foamed sheet 3, one layer of the foamed synthetic resin sheet 2 and one layer of the non-foamed sheet 3 are as follows.
It is appropriate to heat-seal one or more layers, preferably two to three layers.

Next, the size of the sheet-like materials 2 and 3 relative to the board material 1 is such that the size of the sheet-like materials 2 and 3 is determined in order to completely prevent water from entering through the gaps between the boards that occur when the boards 1 are butted one after another during construction. As shown in FIG. 2 or 3, the dimensions of the board are cut to be larger than the board 1 in the width direction, preferably in the width and length directions, so as to leave an overlap margin, and this is cut into one side or two of the board 1. Glue it along the edges.

The adhesive for attaching the sheet materials 2 and 3 to the plate material 1 must be selected depending on the properties of the sheet material, but synthetic rubber emulsion type adhesives and epoxy resin adhesives are highly weather resistant. A synthetic resin adhesive is preferably used.

If this is constructed as shown in the enlarged cross-sectional view of FIG. 4, the weight of the sheet-like materials 2 and 3 can completely prevent water from entering through the gap between the plate-like building materials.

That is, a foamed synthetic resin sheet 2 having open cells with cushioning properties and a non-foamed sheet 3 having flexibility and waterproof properties are combined to form a sheet-like product with two or more layers so as to leave an overlap margin on the back side of the plate material 1. Since it is attached to the surface, it has the following effects.

By combining the disadvantages of the foamed synthetic resin sheet 2 with open cells, which makes it difficult to obtain a complete waterproofing effect when used alone, with the non-foamed sheet 3, which has flexibility and waterproof properties, the sheet-like materials 2 and 3 are made to have perfect waterproof performance. It can be done.

When nailing is performed from the surface of a plate-shaped building material, the non-foamed sheet 3 is pushed by the elastic recovery force of the foamed synthetic resin sheet 2 having open cells with cushioning properties, which constitutes the sheet-shaped materials 2 and 3. Since it is completely in close contact with the periphery of the nail 5, water can be prevented from entering through the hole of the nail 5.

Since the combined sheet materials 2 and 3 are pasted on the back side of the board material 1 so as to leave an overlap margin, when these construction material materials are butted one after another and constructed,
Even if there is a gap between the plate-shaped building materials, the flexible and waterproof non-foamed sheet 3 is pressed against the foamed synthetic resin sheet 2 having open cells with cushioning properties. It can completely prevent water from entering the back side.

The foamed synthetic resin sheet 2 having open cells constituting the sheet-like materials 2 and 3 absorbs the impact force from the outside when performing 5-nail driving, thereby preventing the board material 1 from cracking and improving its strength.

If the plate material 1 is made of inorganic material, even if it is damaged, the combined sheet-like materials 2 and 3 attached to the back side will hold the pieces together, making it easy to repair.

The plate material 1 is a sheet-like material 2, 3 in which a foamed synthetic resin sheet 2 having open cells on the back side is combined.
Because it uses adhesive, it has superior insulation, heat retention, and soundproofing effects compared to unused products.

Even when the construction base has small irregularities such as a concrete surface, the foamed synthetic resin sheet 2 with cushioning properties that constitutes the sheet materials 2 and 3 attached to the back side of the board material 1 absorbs the irregularities of the base material and the board It is possible to smoothly construct shaped building materials.

Next, examples of the present invention will be described.

Example 1 A urethane resin sealer is applied to the back side of a 4 mm thick asbestos cement calcium silicate flat plate whose surface is coated with an acrylic resin paint. After drying, a synthetic rubber emulsion type adhesive is applied at 120 g/m ² . Next, a two-layer sheet-like product consisting of a foamed vinyl chloride sheet with a thickness of 1 mm and open cells with a specific gravity of 0.08 and a non-foamed vinyl chloride sheet with a thickness of 0.7 mm heat-sealed to one side was placed on the above asbestos cement calcium silicate plate. The non-foamed vinyl chloride sheets are stacked in contact with the asbestos cement calcium silicate flat plate, leaving an overlap margin on the back side of the sheet, and the sheets are pasted at room temperature under a pressure of 1 to 1.5 kg/cm ² for a compression time of 3 to 6 hours. Obtained the desired board-shaped building material. This plate-shaped building material was constructed as shown in Figure 4.
No water infiltration from joints or nail holes was observed.

Example 2 An acrylic resin sealer was applied to the back side of a 5 mm thick glass fiber reinforced cement board, and after drying, an epoxy resin adhesive was applied at 100 g/m ² . Next, kraft paper weighing 80 g/m ² coated with polypropylene resin to a thickness of 20 μm was heat-sealed to one side of a foamed polypropylene sheet with a thickness of 2 mm and a specific gravity of 0.5 mm having open cells to form a three-layered sheet. Layer the kraft paper so that it is in contact with the glass fiber reinforced cement board, leaving an overlap margin on the back side of the above glass fiber reinforced cement board, and compress at room temperature under a pressure of 1 to 1.5 kg/cm ² and for a compression time of 6 to 10 hours. After pasting, an acrylic resin paint was applied to the surface of the glass fiber reinforced cement board and dried to obtain the desired board-shaped building material. This plate-shaped building material was constructed in the same manner as in Example 1, but no water intrusion from the joints or nail holes was observed.

Example 3 Apply 70 g/m ² of epoxy resin adhesive to the back side of a 6 mm thick glass fiber reinforced cement board. Next, on one side of a foamed polyethylene sheet with a thickness of 1 mm and open cells with a specific gravity of 0.3, a polyethylene resin film with a thickness of 20 μm, kraft paper with a weight of 75 g/m ² , a polyethylene resin film with a thickness of 20 μm, and a polyethylene resin film with a weight of 75 g/m A sheet-like material consisting of 5 layers of kraft paper ⁽²⁾ stacked in the above order and heat-fused together is placed in such a way that the kraft paper is bonded to the glass fiber reinforced cement board so as to leave an overlapping margin on the back side of the above glass fiber reinforced cement board. After stacking them so that they are touching, the temperature is 50℃ and the pressure is 1 to 1.5 kg/
cm ² and a compression time of 20 minutes to obtain the desired plate-shaped building material. As in Example 1, this plate-shaped building material was constructed, but no water intrusion from the joints or nail holes was observed.

[Brief explanation of the drawing]

FIGS. 1A and 1B are cross-sectional views of a plate-like building material with a sheet-like material attached to the back surface according to an embodiment of the present invention. FIGS. 2 and 3 are plan views showing an embodiment in which a sheet-like material is attached to a plate material so as to leave an overlap margin. Figure 4 is an enlarged cross-sectional view of the butted part where plate-shaped building materials are butted together. 1... Plate material, 2... Foamed synthetic resin sheet having open cells with cushioning properties, 3... Non-foamed sheet having flexibility and waterproofness, 4... Rim, 5
……nail.

Claims (1)

[Claims] 1. A sheet material made of a combination of a foamed synthetic resin sheet with open cells that has cushioning properties and a non-foamed sheet that has flexibility and waterproof properties is pasted on the back side of a board material so as to leave an overlap margin. A plate-shaped building material that has been worn. 2. Claim 1, wherein the foamed synthetic resin sheet is a foamed synthetic resin sheet having open cells made of a synthetic resin selected from the group consisting of polyethylene resin, polypropylene resin, polyurethane resin, vinyl chloride resin, and polystyrene resin. board-shaped building materials. 3. Claim 1, wherein the non-foamed sheet is a flexible and waterproof non-foamed sheet made of a synthetic resin selected from the group consisting of polyethylene resin, polypropylene resin, polyurethane resin, vinyl chloride resin, and polystyrene resin. Board-shaped building materials listed in Section 1. 4. The non-foamed sheet is a flexible and waterproof non-foamed sheet made by coating or impregnating paper or nonwoven fabric with a synthetic resin selected from the group consisting of polyethylene resin, polypropylene resin, polyurethane resin, vinyl chloride resin, and polystyrene resin. A plate-shaped building material according to claim 1. 5. The plate-shaped building material according to claim 1, wherein the plate material is a glass fiber reinforced cement board.