JPH05318673A - Production of floor sheet and execution of floor material - Google Patents

Abstract

PURPOSE:To enhance strength, to enable walking within a short period time after execution and to prevent a swelling or release by bonding a sheet or tile having raised or long fibers left on the rear thereof and having a fast-curing urethane resin layer provided to the surface thereof on the spot by an aqueous emulsion type adhesive or a room temp. curable urethane waterproof material. CONSTITUTION:A polyester nonwoven fabric to which fine unevenness is applied is heat-treated as a base fabric and long fibers are left on the other surface of the heat- treated base fabric so as to prevent an urethane spray material from exuding to the opposide surface of the base fabric. Next, a rim spray composed of a fast-curing urethane spray material to which pigment is added is laminated to the heat-treated surface of the base fabric by a spray machine to form a sheet. Further, the long sheet 9 is cut in agreement with the shape of a veranda at the time of the execution of the veranda floor of an apartment house and, thereafter, an one-pack type urethane primer 11 is applied to substrate concrete 12 to be dried for 30min and, after it is confirmed that no stickiness is left on the surface of the primer layer, a two-pack type room temp. curable urethane waterproof material 10 to which an organotin catalyst is added is applied. Because the waterproof material 10 is a self-leveling type, the sheet is smoothed within 10min after coating.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is for floors and balconies of ordinary houses and apartments, indoor and outdoor floor materials such as public facilities and amusement parks, and roof waterproofing materials for walking. The present invention relates to a sheet manufacturing method and a floor material construction method using the sheet, and has the advantages of both upholstered flooring and coated flooring.

[0002]

2. Description of the Related Art PVC, urethane,
Materials such as epoxy and unsaturated polyester are used, and construction methods include a method of attaching a long sheet or tile of a molded product and a method of applying liquid resin on site.

[0003]

The method of constructing a floor by attaching a long sheet or tile of synthetic resin with an adhesive or the like is simple in construction itself, and it is possible to walk in a short time after construction. However, during construction, it is affected by the unevenness (unevenness) of the groundwork. When the ground is uneven, the smoothness of the construction surface and the contact area between the sheet or tile and the ground are small, so there is a risk of partial adhesion, causing blistering and peeling. There is also a method of applying a thick adhesive to secure the adhesive strength, but most commonly used adhesives have many solvent-containing systems, and if they are applied thickly, the solvent contained in the undried part will evaporate after construction and blisters. Occurs, so it is usually applied thinly. In addition, since the material of the adhesive is mainly a material having a small elongation, it cannot overlap with the movement of the base in the long term, and there is a problem in waterproofness especially when the base is cracked. For this reason, it is good for indoor floors, but the construction on the outdoors and places such as balconies where waterproof performance is required was limited. In narrow places such as balconies, the ends are cut by cutting sheets or tiles according to the shape of the peripheral part, but long sheets are hard in the winter and there is curling or there is a material to be applied to the peripheral part. Due to poor adhesion, there was a drawback such as peeling over time.

On the other hand, since the coated flooring material has self-leveling property, it can be applied depending on the shape and unevenness of the base, and since the film formed is seamless, it adheres to the base and cracks occur. You can also follow in case. However, at the time of construction, if you apply it thickly at one time, the air bubbles mixed in when mixing the two liquids will break and become crater-like and the surface property will decrease, so reduce the application thickness and erase the bubbles with the trowel at the time of construction, It is necessary to stack many layers.
For this reason, even if it takes time to complete the product and the area is small, at least about 2 to 3 days are required, and during that time, it is not possible to walk or put objects.

Further, as a material to be used, in order to give priority to improvement of durability and prevention of stains, a material which is hard and has a small elongation is usually used, and there is a problem in followability to the base. As a countermeasure against this, there is a construction method in which a waterproof material is applied to the lower layer and two kinds of materials are applied to the upper layer, but this method reduces the strength of the entire coating film, so it is necessary to thicken the coating film and There are also drawbacks such as a significant extension. There is also a method to put a mesh on site to increase the strength, but this method is difficult to fix the mesh, and if the coating thickness is thin, the eyes of the mesh will appear on the surface and problems remain in terms of appearance,
It needs to be applied thickly. Furthermore, since the coating material is in a liquid state immediately after construction and remains sticky on the surface for a long time, dust, insects and the like adhere. For this reason, it is not suitable for floor renovation of houses where people live, balconies, and public facilities where short-term construction is required, and the range of use is limited.

[0006]

[Means for Solving the Problems] The above-mentioned problems could be solved by the following means. 1) One side of a woven or non-woven fabric is a smooth surface, and the other side is a base cloth surface in which naps or long fibers are left, and a smooth surface in a state where the following resin liquid does not leach to the surface where naps or long fibers are left A quick-curing urethane resin liquid having a dry time to touch at room temperature within 60 seconds is sprayed on the side, and if necessary, an uneven surface made of the same material is further formed on the sprayed surface to form a long film having a seamless film or a desired dimension. A method for producing a floor sheet, which is characterized by being cut into a shape. 2) Adhesive and / or room temperature curing urethane waterproofing for the surface of the floor sheet according to 1 above, where the raised or long fibers are left, on the foundation of concrete, ALC plate, asphalt, iron plate, stone material, urethane material, wood-based material, etc. A method for constructing a floor material, which comprises using a urethane material having a thixotropy property to securely press an end portion of the floor sheet after the material is adhered. 3) The floor material construction method as described in 2 above, wherein an aqueous emulsion type adhesive is used as the adhesive. 4) As an adhesive, a room temperature curing type urethane waterproof material having a cured product with an elongation of 450% or more is used. At this time, the urethane waterproof material is napped or impregnated into the inside of long fibers to have both adhesive and waterproof functions. The method for constructing a floor material according to item 2, characterized in that it is made to have an integrated structure.

That is, the object of the present invention is to develop a method for combining the advantages of the sheet pasting method and the floor coating material for on-site construction, and a floor sheet using the method. The features of 1) are high strength because it contains a reinforcing cloth inside, 2) Increased adhesion area because there is napped or long fibers that contribute to adhesion with the base, 3) Use urethane resin Therefore, it does not become hard even in winter and there is little wrapping. 4) Use either a water-based type or a room temperature curing type urethane waterproof material as adhesive to secure the adhesive strength, and the feature of construction is 5) Some unevenness Even if there is, there is a firm adherence to the substrate and the occurrence of blisters etc. is suppressed, 6) It is possible to walk in a short time after construction, 7) A construction method that uses the same system material and adheres to the surrounding area and secures it. And choose an adhesive with the substrate , 8) after construction is to follow the movement of the base, and at the same time it is possible to maintain the waterproof long period of time,
Has soundproofing effect, 9) long-term durability, 10)
Since the peripheral portion is pressed with a urethane material having thixotropy, this is a method in which adhesion is surely made to both the sheet and the base.

The base material of the sheet is most preferably a woven or non-woven fabric with one side smooth and the other side having raised fibers or long fibers, such as cotton cloth CORTEN, wool carpet, polyester, nylon and acrylic. One of the non-woven fabrics mentioned above may be heat-treated or resin-coated to be used. The total thickness is preferably about 0.2 to 5 mm, more preferably about 0.5 to 3 mm. When the thickness is thinner than that, the strength of the base material itself is insufficient and the number of raised portions is small, resulting in insufficient adhesion to the base. When it is thick, there is a part where the urethane material does not permeate into the base fabric, and there is a concern that water permeates into the base fabric over time. In consideration of adhesion, it is preferable that long fibers are entangled with each other. Therefore, it is preferable to use a one-side heat-treated non-woven fabric. Further, it is preferable that the material has no water absorption. In addition, the base fabric surface on which the quick-curing urethane material is sprayed must be dense enough to prevent the liquid from penetrating below,
If the base fabric is too rough, the liquid will penetrate into the raised part and it will be difficult to obtain sufficient adhesive strength during on-site construction. However, if the surface is too dense or the surface is made to be a smooth melting surface by heat treatment, the adhesion (anchor effect) with the fast-curing urethane sprayed on the surface is reduced. It is also possible to create a pattern on the surface of the flooring material to be manufactured, by forming an uneven pattern on the surface of the base material on which the rapid curing urethane is sprayed. It is considered that this is because the quick-curing urethane material sprayed on the surface cures quickly and cures without self-leveling. Further, if a pattern is applied to the surface of the base cloth and a fast-curing urethane resin having good transparency is used, the design of the construction surface is improved. In order to enable walking in a short time after construction, it is preferable to attach a preformed long sheet or tile and use a coating material having a comparatively long curing time only in the peripheral portion.

The method of adhering to the substrate can be selected according to the situation and requirements of the site. The water-based emulsion type can be used for indoor floors, corridors, entrances, stairs, and other floors that require immediate waterproofing after construction. Since it is water-based, the environment does not deteriorate even at the site where it is hermetically sealed, and no blistering occurs due to solvent volatilization. Examples of actually used brands are "Aqueous Bond 7" (acrylic copolymer) manufactured by Sumitomo 3M Limited, "RA Aqueous Bond" manufactured by Ube Industries, etc., and these are air-dried after being applied to the base. By doing so, a sticky feeling remains on the surface, so the sheet may be pressure-bonded. The amount used is 100 to 400 g / m ² . The floor sheet of the present invention has a feature that if the raised surface or long fibers are left on the surface to be adhered to the base, the adhesion area is large even if there is some unevenness in the base so that the adhesion can be ensured. Further, even when a crack is generated in the base, the raised portion has a cushioning effect, the sheet portion is not cut, and the waterproof property is secured.

To add waterproof performance, a room temperature curing type urethane waterproof material is used. In the method of the present invention, the material used for adhesion to the substrate is preferably a coating type urethane waterproof material, and the urethane rubber type 1 of JIS A-6021 (roof coating waterproof material) having a cured product elongation of 450% or more. It is necessary to use materials compatible with (mainly for exposure) and Class 2 (mainly for non-exposed applications). Since the room temperature curing type waterproofing material has self-leveling properties, it can be adhered to the substrate in a state that corresponds to the unevenness of the substrate, and the material enters between the raised parts of the floor sheet for chemical adhesion. In addition, since physical adhesion can be expected, the adhesive strength is extremely strong and peeling and blistering do not occur. In this case, the constructed flooring material has a composite structure, and its strength and durability are significantly improved as compared with the conventional pasting material and coating material. That is, this is because the lower layer is a soft waterproof material, and the inside has a base cloth that also serves as a reinforcement, and the upper layer is a floor material having a relatively hard layer. Further, since the waterproof material layer is provided on the base, it is possible to keep the waterproof property for a long time by following the cracks of the base concrete or the like. In addition, the surface layer is a factory molded product,
Light walking right after construction can be secured. Therefore, it is the most suitable method for floor renovation of balconies, bathrooms, multi-purpose rooftops, etc. where people live. Also, since the urethane material used for the lower layer has a relatively low hardness, the finished floor material feels soft, and the walking feeling is good, and when used in an open corridor, the clicking sound when walking is reduced and it is extremely environmentally friendly. preferable.

It is important to select a fast-curing material as the urethane material to be sprayed onto the surface. When the curing is slow, the portion that penetrates into the inside of the base cloth and the portion that remains on the surface are separated, so that the surface property deteriorates and the thickness decreases. I cannot secure it. Further, in consideration of increasing the production efficiency and manufacturing a long sheet, it is necessary to use a material having a finger-touch dry time within 60 seconds at room temperature, preferably a material adjusted to about 10 to 30 seconds. When this material is used, rubber elasticity develops about 3 minutes after spraying, so it cures even at room temperature, but in order to finish it as a product in a short time, if it is passed through a heating curing furnace, it will wind in about 20 minutes. It becomes possible to manufacture a long length sheet. Furthermore, if a quick-curing spray material is used, it is possible to secure the film thickness and simultaneously perform non-slip treatment on the surface. The method of non-slip treatment is disclosed in JP-A-63-10.
It can be performed by the method described in 7775. The spraying thickness of the rapid curing urethane resin is 0.5 to 5 mm, preferably 1 to 3 mm.

The treatment of the edge of the sheet is an important point. If the adhesion and the settlement are not reliable, water will enter with the passage of time and peeling, blistering, etc. will occur. Even in the conventional method, the end portion is treated with a sealing material or the like, but only the end portion is pressed, and waterproof treatment including the drainage port, drain, etc. in the vicinity is not performed. In addition, even if a coating material such as urethane is used for treatment, the adhesive strength is often insufficient because the material is different. In the present invention, the same urethane material can be used for both the sheet material and the coating material to ensure the adhesion.

[0013]

EXAMPLES Before describing the examples, materials and machines used in the present invention will be described below. The following parts represent parts by weight. [Materials to be used] 1) Base cloth: Various materials can be used as long as the base cloth has one surface that is smooth and the other has a rough surface with naps or long fibers left. Table 1 shows polyester nonwoven fabric (one-side heat treated product)
An example of physical properties of Further, FIG. 1 shows a cross-sectional view of the polyester nonwoven fabric. In FIG. 1, 1 is a smooth surface by heat treatment, 2
Indicates a raised portion.

[Table 1]

2) Fast-curing urethane spraying material: PD-190 (soft) and PD-150 (hard) commercially available under the brand of rim spray (fast-curing two-component spray material manufactured by Mitsui Toatsu Chemicals, Inc.) )It was used. Although this material has properties and physical properties shown in Table 2, it exhibits a quick-curing property within a drying time of 20 seconds to the touch, and all exhibit rubber elasticity 2 to 4 minutes after molding at room temperature. In addition, the physical properties of the cured product are high in mechanical strength such as hardness, tensile strength and tear strength, and it is a good material for the surface material of the floor material. The fast-curing urethane material used for this purpose is preferably a solventless type in consideration of shrinkage after molding, but a small amount (5% or less) of solvent can be added depending on compatibility with the machine used. .. The above two types of materials are solvent-free systems with low viscosity, solution A is an MDI partial prepolymer having an isocyanate group at the terminal, and solution B is a mixture of a high molecular weight polyether with a highly reactive crosslinking agent and a curing catalyst. The composition is

[Table 2]

3) The water-based adhesive is preferably a water dispersion of an acrylic copolymer, and since this product is an aqueous system, the working environment is good, and blisters due to the solvent do not occur even after construction. After drying, it becomes insoluble in water because a bond film is formed. As a product example, Table 3 shows the physical properties of the water-based bond 7 manufactured by Sumitomo 3M Limited.

[Table 3]

4) Room temperature curing type urethane waterproof material: N (carbon modified), C (color waterproof material) and newly available under the brand name of San Shiraru (JIS standard compliant product manufactured by Mitsui Toatsu Chemicals, Inc.) Developed one-component waterproof material Sansylar
I used a supermarket. The properties and physical properties of this material are shown in Table 4, and all have a pot life of 1 hour or more and have good leveling properties. However, since such a long pot life is not necessary for this application, a 16 wt% DOP solution of lead octylate is used for Sansyral N and C (product example: L
L-690D; manufactured by Sankyo Machine Gosei Co., Ltd.) was added to the solution B at 1.5% by weight. As a result, the pot life at 20 ° C is 30 minutes,
The curing time (the state in which the coating film itself exhibited rubber elasticity and reached the practical strength) was shortened to 8 hours to provide workability suitable for use in the lower layer. On the other hand, the one-component type Sansilar supermarket, unlike the conventional two-component type, does not require the mixing of the two components and is very convenient for construction of a small area. All materials have an elongation of 600% or more and are excellent in the followability of the base.

[Table 4]

5) Thixophilic urethane material: As a urethane material for treating the peripheral portion, a urethane sealing material and / or a urethane waterproof material, a material obtained by adding a thixotropic agent to a coated floor material (sansilar F shown in Table 5). As the thixotropic agent, anhydrous silica is used alone or in combination with a polar solvent, and the thixotropic property increases as the addition amount increases.

[Table 5]

[Blasting Machine] A two-pack type high-pressure spray machine is required for spray-molding the fast-curing urethane material. As an example of the machine body, the liquid pressure is about 100 kg /
Any type that can increase the pressure to cm ² can be used regardless of the type. As actual models, THD-2K manufactured by Toray Engineering Co., which uses a high-pressure gear pump as a pump, NR-230 type high-pressure polyurethane molding machine manufactured by Toho Machine Industry Co., Ltd. that uses an axial piston pump, and US Gasmar using a plunger pump are used. H-2000 type manufactured by the same company, T-3H type manufactured by Grasscraft Co., and the like. The spray gun used for mixing the two liquids is preferably a collision mixing type. This is because when the reaction of the two liquids is set within 20 seconds, it is not possible to secure the cleaning time with the solvent by using a dynamic mixer that stirs and mixes by rotating the rotor or a static pipe mixing (static mixer). As a result, a hardened product that cannot be washed will accumulate inside. However, if the reaction speed is slowed down and the touch-drying time is set to about 1 minute, a mixing method other than the collision mixing method can be used. The collision mixing method can be classified by the cleaning method of the mixing chamber that mixes the two liquids, but the mechanical cleaning method (GX-7 gun (manufactured by Gasmer, USA) etc.) by putting in and out the rod and the cleaning method by air (pro Brahgan (manufactured by Grasscraft, USA) and the like).

Example 1 (Production of floor sheet) As a base cloth, a polyester non-woven fabric having a thickness of 1.26 mm shown in Table 1 (average diameter of filament: 0.015 mm,
Sheet width 1m, sheet length 100m) 0.2 on one side
Heat treatment was applied with fine irregularities with a height of mm (the shape of a quadrangular pyramid having one side of 3 mm on the bottom surface) to prevent the urethane sprayed material from leaching to the other side, and long fibers were left on the other side. It was in a state. Rimspray PD-190, which is a fast-curing urethane spraying material on the heat-treated surface, is pigmented
= 1/1 weight ratio) was added 5% by weight, and a spray machine H-2000 manufactured by US Gasmer Co. was used,
A sheet was prepared by laminating the sheet to a thickness of 1.5 mm. The spray conditions are liquid temperature (A / B = 65/50 ° C.) and discharge pressure is 2
The liquid is 105 kg / cm ² and the GX-7 gun (mixing module: # 7, pattern control disk: #
212). The unevenness of the base appeared on the surface of the sheet and was embossed. Immediately put in curing oven 6
After curing at 0 ° C. for 30 minutes, a sheet for winding floor was manufactured.

Example 2 (Production of Floor Sheet) As shown in FIG. 3, an acrylic woven cloth having a thickness of 2.5 mm (width 1.
8 m, length 5 m; one side has a smooth surface (1), the other has a raised portion (2) state, and the rim spray PD-150 is used by using a spray machine T-3H type manufactured by US Grasscraft Co. Then, the rapid-curing urethane resin (4) was sprayed from the spray head (3) to a thickness of 2.5 mm 5 times while changing the direction in the vertical and horizontal directions to prepare a flat surface. Spray conditions are liquid temperature (A / B = 50/50 ° C), discharge pressure is 11 for both liquids.
The pressure was set to 0 kg / cm ² and molding was performed using the same company's Probler gun (mixing chamber: round # 1). Immediately thereafter, the spray gun was leveled and sprayed from a distance of 2 m to perform non-slip processing in which unevenness (7) was formed on the surface with the same material. Immediately after molding, the mixture was cured at 50 ° C. for 5 minutes, and an acrylic urethane top coat (# 8500 green; manufactured by Asia Kogyo Co., Ltd.) was applied at 200 g / sq. This is because it is applied to a portion where design is important, and discoloration prevention and easy cleaning are taken into consideration. After applying the top coat, it was cured at 60 ° C. for 1 hour to produce a sheet (6) for a winding floor. An outline of the manufacturing method is shown in FIG. 2 (without non-slip treatment) and FIG.
(Non-slip treatment). In FIG. 2, 5 indicates a curing furnace.

Example 3 (Production of floor sheet) Nylon nonwoven fabric having a thickness of 2.0 mm (width 1.8 m, length)
6m) with a cylindrical pattern with a diameter of 20mm and a height of 1mm on one side
Are heat-pressed so that the distance between them is 30 mm.
It was attached to the surface of the base cloth. As a result, the heat treated surface has a
Even if it becomes dense and sprays fast-curing urethane resin liquid,
Prevents oil from seeping out to the other side, while the other side is long
The fiber was left behind. On top of that, the same person as in Example 2
Rim spray PD-190 by 2.0mm,
Beet (beige) 250 g / m ²Sprayed. 1 o'clock
After being left at room temperature for a while, it is further dried at 40 ° C for 3 hours, then
Create a floor tile by cutting it into an illu (280 x 160 mm)
did. On the floor tile surface, a columnar pattern of the base appears and is nonce
It was a lip process.

Example 4 (Construction method of flooring material) As shown in FIG. 4, when constructing a veranda floor of a moving apartment, the long sheet (9) prepared in Example 2 is cut on site to match the shape of the balcony. Then, 100 g / m ² of one-pack type urethane primer (11) (Sun PC; manufactured by Mitsui Toatsu Chemicals, Inc.) was applied to the base concrete (12).
After drying for 30 minutes and confirming that no solid remains on the surface, the two-component room temperature curing type urethane waterproof material (1
0) Sansilar N (manufactured by Mitsui Toatsu Chemicals; mixing ratio of main agent: curing agent = 1: 2) with organolead catalyst LL-690D as B
1.5 wt% was added to the liquid, and 1.5 kg / m ^{2 was} applied. The base concrete had irregularities and unevenness, but a smooth surface was obtained 10 minutes after the material was applied because the applied waterproof material was a self-leveling type. From this, it was found that there is no problem even if unevenness and unevenness exist on the base.

Next, the above-mentioned sheet (9) which had been formed in advance was pressed from the laying surface by the roller compaction roller (8) to expel the air and the waterproof material was sufficiently impregnated into the raised portion on the back surface of the sheet. .. Figure 4 shows a schematic diagram of on-site construction.
FIG. 5 shows a block diagram of the floor material. 4 and 5,
13 is a base defect portion, 14 is a fast curing urethane resin layer, 1
Reference numeral 5 denotes a fast-curing urethane resin impregnated portion, 16 denotes a room temperature-curable urethane waterproof material impregnated portion, and 17 denotes a room temperature-curable urethane waterproof material layer. The seat was in motion for about 30 minutes after the seat was installed, but it stopped moving after 1 hour, and it was judged that it would be possible to do it in about 1 hour if it walked gently. However, it was considered to be the most suitable for the construction of the balcony etc. of the apartment where people are much shorter. After confirming that the movement of the sheet stopped in about 1 hour, from the sheet end (19) to the drainage groove and the wall surface of the parapet (18), San Shiraru F (Coating floor material manufactured by Mitsui Toatsu Chemicals, Inc.) Anhydrous silica (Aerosil # 38
0; manufactured by Nippon Aerosil Co., Ltd.) was applied to the material (20) in which 3 parts were added to 100 parts of the main agent + hardening agent, and edge treatment was performed. Since the sheet and the material of the Sansilar F which had been subjected to the end treatment were the same urethane, the adhesive strength was good and peeling did not occur after construction. The construction diagram is shown in FIG. Figure 6
4 indicates a fast curing urethane resin. Since the waterproof material is used for the foundation after the construction, the waterproof effect is sufficient, and before the construction, water leaked from the cracks in the concrete to the lower floor, but it was completely stopped after the construction. Furthermore, before the construction, the noise of the shoes when clothes were dried or children played was noisy downstairs, but after the construction, there was a sound insulation effect and it could not be heard downstairs. When an adhesion test with the base was conducted 7 days after the construction, it was 6 kgf / cm, which was a very good result.

A test in a laboratory was also conducted at the same time in order to investigate the change over time in the waterproof performance of this method. As a result, no peeling from the substrate was observed in the "repeated fatigue test" (test method described later) at different temperatures, and no abnormality was found in the coating film. Therefore, this method is considered to maintain the waterproof performance for a long time. Also, measure the impact sound of the floor.
Although it was carried out in accordance with IS A1418 (test method will be described later), in this method, a significant improvement was confirmed in the high frequency part compared to the conventional PVC sheet sticking and floor coating material,
In apartments and other condominiums, it is considered to be effective as a measure against shoe noise (a jarring noise). The test results are shown in Table 7.

Example 5 (Construction method of flooring material) Example 2 was used for repairing the entrance floor of a condominium (moving in).
The floor sheet prepared in 1 above was brought to the site, cut according to the shape of the entrance floor, and attached to the floor in the same manner as in Example 4. This time, LL-690D was added to the lower layer in the amount of LL-690D of 1.5 wt% to Sansilar C (manufactured by Mitsui Toatsu Kagaku Co., Ltd .; compounding ratio of main agent: hardening agent) of 2 liquid room temperature curing urethane waterproof material. , 1.5 kg / m ² and applied. It was considered that the base was raised in some corners and adhesion was difficult, but the waterproof material applied to the base was impregnated into the raised part, and the product was well set without any treatment. The sheet was in motion for about 30 minutes after the sheet was installed, but it was judged that it would be possible in 1 hour if it would become firm and walk gently after 1 hour, and it would be possible to walk compared to the conventional coating type flooring. It was considered to be optimal for construction when the time is extremely short, especially when people such as the entrance frequently come in and go out and there is no other entrance. After the lapse of 1 hour, Aerosil # 380 was added to San Sylal C by the same method as in Example 4, and the construction was performed in the same manner. Even with this construction method, the adhesion between the urethane waterproofing agent used for edge treatment and the sheet was good, and the condition was checked one year after construction, but no peeling was found. After the construction, the waterproofing material is used for the groundwork, so the waterproofing effect is sufficient, there is no worry of water leaking downstairs, and washing with water is possible. In the adhesion test with the base after 7 days, 6.5k
It was a very good result of gf / cm. In the laboratory test as well, as in Example 1, a good effect was recognized for both the “repeated fatigue test” and the “improvement of floor impact sound”.

Example 6 (Construction Method of Flooring Material) The floor block prepared in Example 3 was used when the emergency stairs of the condominium were repaired. The base was peeled off from the vinyl chloride tile, which is the old floor material, so the tar-based adhesive remained. For this reason, first about 1 k of fast-curing resin mortar (Super Cation Tight # 200; manufactured by Yabuhara Sangyo Co., Ltd.)
g / m ² was applied with a lacquer. After 3 hours, it was confirmed that the strength of the groundwork had developed, and then one-component type waterproof material Sancillar Super-1.5 kg / m ² was applied and immediately the floor blocks were arranged and attached. At the time of sticking, rolling was performed with a roller as in Example 4. The ends were caulked with a urethane sealing material. Adhesion between the urethane sealing material used for the edge treatment and the sheet was good, and one year after the construction was completed, the sheet was checked but no peeling was found. Next, we carried out installation work of ready-made metal fittings on the step part,
It became possible to walk lightly within 1.5 hours after construction, and there was no particular need for road closures. Adhesion with the base is 5.5 kgf / c
It was found that the water leakage to the downstairs during the washing was stopped after the construction and the workability and waterproofness were sufficient. In addition, the rattling noise generated when walking is significantly reduced, and the sound insulation is improved. Also in the laboratory test, as in Example 4, the effect was recognized in both the “repeated fatigue test” and the “improvement of floor impact sound”.

Example 7 In constructing a floor in an inner corridor of an apartment house (while moving in),
Apply about 150 g / m ² of water-based bond 7 (physical properties shown in Table 3) as an adhesive to the base concrete with a roller, and
After air-drying for 0 minutes, the sheet produced in Example 1 was pressure-bonded to construct a floor. The edge was pressed against the wall surface and the boundary was caulked with a urethane sealing material. After a lapse of 6 months from the construction, the inspection was conducted, but the urethane sealing material and the sheet had good adhesion and no peeling was found. The central part was walkable after 30 minutes of construction. I don't walk around, but
Due to the uncured state, a caution tag was posted. Water-based bond was used for this construction site because it is not exposed to rain and the ventilation is poor. The adhesive strength was measured 7 days after the application, and it was a good result because the fibers of the nonwoven fabric remained in the adhesive layer at 4.0 kg / cm.

Comparative Example 1 (Construction of Long Sheet) In winter, a long sheet made of vinyl chloride was used to construct a veranda floor in the same manner as in Example 4. At the time of construction, the sheet was cut according to the shape at the site, but the sheet itself was hard and the winding gusset was bad and it could not be adhered to the base, so a PVC-based adhesive (solvent-based) to the base concrete
After applying 0.3 kg / m ² , it was necessary to put a sand bag on the entire surface of the sheet and let it stand overnight until the adhesion was completed. As in the case of Example 4, a material obtained by adding the same amount of Aerosil # 380 to San Sylal F was used for pressing the peripheral portion, and the same method was used. However, when a survey was carried out six months after the construction, it was found that there was peeling between the PVC sheet and San Syral F. Also, the base had considerable unevenness and unevenness, and it seemed that the sheet could not be installed in a completely adhered state. In summer, several blisters with a diameter of about 10 cm occurred. When the location where blistering occurred was cut and the condition was observed, it was found that the adhesion was incomplete due to the uneven portion. When the adhesive strength to the base was measured after 7 days, it was peeled between the adhesive and the base at 2.0 kgf / cm. In addition, when a concrete underlayer was created in the laboratory and the floor created with the same specifications as this comparative example was tested, if even a slight crack occurred in the underlayer, a peeling phenomenon occurred between the sheet and the underlayer of this example. It was discovered that water leakage would occur. In the laboratory test, the "repetitive fatigue test" was performed as in Example 4, but the entire surface was peeled off from the adhesive layer immediately after the tensile test was started. However, the floor material itself was not cracked. In addition, "Measurement of floor impact sound" was performed, but improvement in the high frequency region was hardly recognized.

Comparative Example 2 (Construction of a coated floor) A room-temperature-curable urethane coating floor material, Sansilar F (manufactured by Mitsui Toatsu Chemical Co., Inc.), was applied to the same veranda as in Example 1.
Ground concrete is sanded with a disc sander to improve surface cleaning and adhesion,
Approximately 100 Sun PC as a plummer with a roller brush
g / m ² was applied. After drying for 1 hour, it was confirmed that no solid was left on the surface.
It was applied twice and a 2 mm thick floor was constructed. Since this material has a pot life of about 65 minutes and requires 24 hours for curing, the lower layer was applied on the previous day and the upper layer was applied on the next day, but since the curing takes time, the veranda can walk at all for 2 days. There wasn't. Also, because it took time to cure, some insects adhered to the surface and the appearance deteriorated. In order to prevent slippage, it was necessary to add urethane powder to the surface and apply it to a top coat or the like, and a work period of one day was required. Since the coating floor material usually has a strong temperature dependency and is affected by the temperature of the base and the atmosphere, the curing is delayed in the winter, and thus the curing time of 3 days or more is required. Since this floor material has a seamless structure, it is thought that it has a good waterproofing effect and is sufficiently adaptable to changes over time.However, the same material was poured into the drainage port and drain in the peripheral area, but the material was a self-leveling type. Therefore, it flows until it hardens, and most of the liquid flows into the drain (lower part),
It was not possible to secure the thickness of the peripheral part. In the laboratory test, the “repeated fatigue test” was performed as in Example 4. No peeling phenomenon was observed, but cracking was confirmed in the thin end portion. In addition, "Measurement of floor impact sound" was performed, but improvement in the high frequency region was hardly recognized.

Tables 6 and 7 collectively show the construction results and floor impact sound measurement values of Examples 4 to 7 and Comparative Examples 1 and 2.

[Table 6] A model was created with the same specifications as those of the examples and comparative examples, and a laboratory test was conducted. (Test items and conditions) 1. Repeated Fatigue Test: A method of examining the followability of the movement of the base movement. Test conditions-Movement speed of base: 20 mm / min-Extension width and cycle: 0.5 to 1.5 mm Repeated for 6 seconds (10 cycles / min) -Number of tests: 2500 times / 23 ° C then 2500
Time / −10 ° C. ・ Test method: The test piece (21) is attached to the flexible plate (22) of the apparatus and repeatedly pulled 2500 times at a temperature of 23 ° C. to stop. Further, after the temperature is set to -10 ° C, it is left standing for 1 hour and repeatedly pulled 2500 times with the same width. Immediately after the test, the test piece is observed (see FIG. 7). 2. Floor impact noise improvement effect: Conforms to JIS A1418 (measurement method of floor impact sound level at construction site) ・ Explanation: This standard is for floors between upper and lower two rooms in various buildings and upper floor corridor and room It defines the method of measuring the floor impact sound that represents the sound insulation performance against the floor impact sound, and "floor impact sound level" means the sound pressure level in the sound receiving room of the floor impact sound generated by the floor impact sound generator. . The configuration of the device is shown in FIG. In FIG. 8, 23 is a floor impact sound generator,
24 is the room, 25 is the floor to be measured (including the ceiling between the rooms),
26 is a microphone, 27 is an indicating sound level meter, and 28 is an octave analyzer.

[Table 7]

[0031]

EFFECTS OF THE INVENTION A sheet or tile produced by leaving a brushed or long fiber on the back side and a fast-curing urethane resin layer on the surface is an aqueous emulsion type adhesive on site, or the cured product has an elongation of 450% or more at room temperature. By the method of adhering to the base using a curable urethane waterproof material, 1) a strong sheet with a reinforcing cloth inside can be manufactured, and 2) brushed or long fibers that contribute to adhesion are left on the bottom surface 3) It will be possible to walk within a short time after the completion of construction. 4) As the lower layer adheres even to a grounding surface that is uneven as an adhesive, no blistering or peeling occurs.
5) When urethane waterproof material is used as the adhesive, the following property of the base material becomes good, and even if the base material is cracked, the floor material does not crack and the waterproof property can be secured for a long time.
6) Great soundproofing effect and long-term durability.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a polyester (exemplary) nonwoven fabric.

FIG. 2 is a schematic view of manufacturing a long sheet.

FIG. 3 is a schematic view in which a rapid-curing urethane resin is sprayed onto a smooth surface from above and further the same material is horizontally sprayed to form an uneven surface.

FIG. 4 is a schematic diagram of construction of a long sheet.

FIG. 5 is a schematic sectional view of a floor material construction product.

FIG. 6 is a schematic construction cross-sectional view of a floor material construction and its end portion.

FIG. 7 is a diagram showing an outline of a repeated fatigue test method.

FIG. 8 is a diagram showing an outline of a method for measuring floor impact sound.

[Explanation of symbols]

 1 Smooth Surface 2 Brushed Part 3 Spray Head 4 Fast Curing Urethane Resin 5 Curing Furnace 6 Rolling Floor Sheet 7 Unevenness 8 Rolling Roller 9 Long Sheet 10 Room Temperature Curable Urethane Waterproof Material 11 Primer 12 Base Concrete 13 Base Defect 14 Fast curing urethane resin layer 15 Fast curing urethane resin impregnation part 16 Room temperature curing type urethane waterproof material impregnation part 17 Room temperature curing type urethane waterproof material layer 18 Parapet 19 Edge part 20 Room temperature curing type urethane waterproof material + anhydrous silica 21 Floor material sheet test piece 22 flexible plate 23 floor impact sound generator 24 room 25 floor to be measured (including ceiling between rooms) 26 microphone 27 indicated sound level meter 28 octave analyzer

Front page continued (72) Inventor Yukio Masumi 1190 Kasama-cho, Sakae-ku, Yokohama, Kanagawa Mitsui Toatsu Chemical Co., Ltd. Within the corporation

Claims (4)

[Claims] 1. A base fabric surface in which one surface of a woven or non-woven fabric is a smooth surface and the other surface is brushed or left with long fibers,
A quick-curing urethane resin solution with a dry-to-touch time of 60 seconds or less at room temperature is sprayed onto the smooth surface side without leaching the surface where the raised or long fibers are left, and further onto the sprayed surface if necessary. A method for producing a floor sheet, characterized in that an uneven surface made of the same material is formed to have a long shape having a seamless film or a shape cut into a desired dimension. 2. The surface of the floor sheet according to claim 1 on which a raised or long fiber is left on an underlayer of concrete, ALC plate, asphalt, iron plate, stone material, urethane material, wood-based material, etc., is adhesive and / or room temperature cured. A method for constructing a flooring material, comprising the steps of: using a urethane material having a thixotropy property to securely press the end portion of the floor sheet after bonding with a type urethane waterproof material. 3. The method for constructing a floor material according to claim 2, wherein an aqueous emulsion type adhesive is used as the adhesive. 4. As an adhesive, the elongation of a cured product is 450%.
The above normal temperature curing type urethane waterproof material is used, and at this time, the urethane waterproof material is napped or impregnated into the inside of the long fibers to form an integrated structure which exerts both functions of adhesion and waterproofing. The method of constructing a floor material described in the item.