JP7570225B2 - Floor reinforcement method - Google Patents

Description

The present invention relates to a method for reinforcing or repairing floor surfaces in gymnasiums, halls, etc.

Conventionally, scratches on the flooring of buildings have been repaired. For example, the scratch repair transfer tape described in Patent Document 1 is used to repair scratches on floors, etc. by placing the adhesive layer of the transfer tape on the scratch on the floor and pressing the base sheet to transfer the coating layer onto the floor, resulting in a seamless repaired area.

Patent Document 2 also describes an invention for a multicolored coating repair method, which allows for easy repair by attaching a patch film made of a multicolored paint with the same composition as the coating to damaged areas of the multicolored coating with an adhesive.

On the other hand, Patent Document 3 describes an invention relating to a water-based paint made of an aqueous composition containing an acrylic urethane resin as a paint for protecting the surface of a laminate in which synthetic resin and wood materials are laminated, and a method for protecting the surface of flooring materials with this water-based paint.

JP 2004-76269 A Japanese Patent Application Publication No. 10-220033 JP 2005-264136 A

The above-mentioned Patent Documents 1-3 are known as paints and methods for protecting the surface of flooring materials, etc., but when it comes to flooring materials in facilities, etc., damage such as scratches and wear is expected to be concentrated in specific locations, and in fact, damage to flooring materials in such locations is more severe than in other locations. In cases where damage such as splinters occurs in the flooring, it is expected that there is a risk of accidents to people exercising or moving around.

However, such floors need to be repaired, but the repair work is costly and time consuming, and in addition, the facility must be closed during the repair work. In response to this, there are requests from the field to take measures to reduce damage to the floor surface.
On the other hand, there are also requests for effective repair measures in cases where damage to the floor has already occurred.

The present invention has been made to solve the above problems, and aims to provide a floor strengthening method that reinforces and strengthens areas of flooring where damage such as scratches or wear is expected, and repairs and strengthens areas that have already been damaged or worn, resulting in a good floor surface.

In order to solve the above technical problems, the floor reinforcement method of the present invention, as shown in Figure 1, is a method of reinforcing and strengthening a floor surface where wood-based flooring materials have been installed, by attaching synthetic resin sheet material in advance to specific areas where damage is expected due to the application of high loads and high frictional forces, such as material delivery routes or attack zones in ball games.

The floor reinforcement method of the present invention involves repairing and strengthening specific areas of a floor surface where wood-based flooring materials have been installed that have been damaged due to high loads and high frictional forces, such as material delivery routes or attack zones in ball games, by attaching synthetic resin sheet materials.

The floor reinforcement method of the present invention involves attaching a synthetic resin sheet material to specific areas of a floor surface where wood-based flooring is installed that are likely to be damaged by the application of high loads and high frictional forces, such as material delivery routes or attack zones in ball games, and then applying a urethane coating to the surface and surrounding areas of the sheet material to reinforce and strengthen it.

The floor reinforcement method of the present invention involves attaching a synthetic resin sheet material to specific areas of a floor surface where wood-based flooring has been installed that have been damaged due to high loads and high friction, such as material delivery routes or attack zones in ball games, and then applying a urethane coating to the surface and surrounding areas of the sheet material to repair and strengthen it.

The floor reinforcement method according to the present invention involves applying the urethane coating to the upper surface of the sheet material and within a range of 10 mm to 30 mm from the end of the sheet material 4.

The floor reinforcement method of the present invention includes the steps of polishing a specific area of the floor surface, attaching the sheet material to the specific area, polishing the surface of the attached sheet material, and applying the urethane coating to the polished surface of the sheet material.

The floor reinforcement method according to the present invention is the same as the floor reinforcement method described above, and further includes, after the painting step, a step of polishing the surface of the urethane coating, and a repainting step of applying another coat of urethane paint to the polished surface of the urethane coating.

The floor reinforcement method of the present invention is configured so that the thickness of the sheet material is in the range of 0.1 mm to 0.5 mm.

The floor reinforcement method according to the present invention uses multiple rectangular sheets of the sheet material when attaching the sheet material, and these sheets are arranged and attached to specific areas of the floor surface.

The floor reinforcement method of the present invention employs a configuration in which a synthetic resin sheet material is attached in advance to reinforce and strengthen specific areas where damage is expected due to the application of high loads and high frictional forces. This increases the strength of the floor surface by attaching the sheet material, making it less likely that damage such as splinters, cracks, dents, and peeling will occur in the floor material even when a high load is applied, making it possible to avoid repairs, ensuring the safety of the floor surface in areas where strength is required, and providing the effect of excellent workability, such as easy placement of the sheet material.

The floor reinforcement method of the present invention employs a configuration in which a synthetic resin sheet material is applied to specific areas that have been damaged by the application of high loads and high frictional forces to repair and strengthen them. This effectively improves the damaged areas by applying the sheet material, and also increases the strength of the floor surface, making it less likely that the floor material will be damaged by splintering, cracking, denting, peeling, or other damage even when a high load is subsequently applied. This ensures the safety of the floor surface in areas where strength is required, and also provides the advantage of excellent workability, such as the ease of positioning the sheet material.

The floor reinforcement method of the present invention involves attaching a synthetic resin sheet material to specific areas where damage is expected due to the application of high loads and high frictional forces, and then applying a urethane coating to the surface and surrounding areas of the sheet material to reinforce and strengthen it. In addition to the effects of attaching the sheet material, slippage between the sheet and the surrounding floor surface is made uniform, preventing tripping, and the urethane coating reinforces the attachment of the sheet material, improving its durability.

The floor reinforcement method of the present invention involves attaching a synthetic resin sheet material to specific areas that have been damaged by the application of high loads and high frictional forces, and then applying a urethane coating to the surface and surrounding areas of the sheet material to repair and strengthen it. This not only improves the damaged areas caused by the application of the sheet material, but also makes the surface smoother with the surrounding floor surface, preventing tripping, and the urethane coating reinforces the attachment of the sheet material, improving its durability.

The floor reinforcement method of the present invention applies urethane coating to the top surface of the sheet material and within a range of 10 mm to 30 mm from the end of the sheet material, which has the effect of making the slipperiness between the boundary between the sheet material and the urethane coating, and between the urethane coating and the rest of the floor surface, uniform, resulting in the formation of a natural floor surface.

The floor strengthening method of the present invention includes a process of polishing a specific area of the floor surface, a process of attaching a sheet material to the specific area, a process of polishing the surface of the attached sheet material, and a coating process of applying a urethane coating to the surface of the polished sheet material. This has the effect of allowing the sheet material to be attached well and firmly, and also allowing the urethane coating on the surface of the sheet material to blend in with the sheet material and allow for good coating, thereby contributing to the strengthening of the floor surface.

The floor reinforcement method of the present invention further includes a process of polishing the surface of the urethane coating after the coating process, and a recoating process of applying a second coat of urethane to the polished urethane coating surface. This has the effect of allowing the second coat of urethane to blend well with the previous coat of urethane, resulting in better durability.

The floor reinforcement method of the present invention has a sheet material thickness in the range of 0.1 mm to 0.5 mm, which has the effect of maintaining an appropriate level of height difference on the floor surface, creating a natural feeling on the floor surface and ensuring the strength of the floor surface.

According to the floor reinforcement method of the present invention, when attaching the sheet material, multiple rectangular sheet materials are used, which are lined up and placed in a specific area of the floor surface and attached. This allows the sheet material to be of a suitable size, which ensures reliable attachment of the sheet material, makes the work of attaching the sheet material efficient, and also makes it easy to manage the sheet material.

1A, 1B, and 1C are diagrams showing a floor structure according to an embodiment, in which a sheet material is placed on a large floor surface and a urethane coating is applied thereto. 1A and 1B are diagrams illustrating a floor structure according to an embodiment, in which a sheet material is placed on a straight or cornered floor surface such as a corridor and a urethane coating is applied.

Hereinafter, an embodiment of the present invention will be described in detail.
It should be noted that the present invention is not limited to these exemplary embodiments, and various modifications can be made without departing from the spirit and scope of the present invention.

The reinforcement method according to this embodiment is a method for reinforcing or repairing a specific area of floor surface 2 of a building, such as a gymnasium, hall (concert hall), or event venue, that has wood-based flooring.

The above-mentioned specific range of locations refers to locations where high loads and high friction are applied, such as locations where people move or vehicles pass through when delivering materials, and are examples of locations where high loads and high friction are applied, such as zones where attacks and spikes are frequently performed in ball games, near entrances and exits of rooms, or moving areas of movable spectator seating, material delivery routes, and corridors. In these specific range locations where high loads and high friction are applied, damage to the floor surface 2 has been observed, and damage to the floor surface 2 can be predicted in advance.

In particular, areas such as near the attack line (front zone) on a volleyball court or near the shooting zone near the goal on a basketball court are areas where players are active and friction is intense. Furthermore, areas where such high friction or loads are applied are prone to damage due to scratches in the flooring (splinters, cracks, dents, peeling, etc.), which may lead to accidents involving people, etc.

For this reason, the floor surface 2 in the specific range where the high load and high friction are applied is reinforced in advance to prevent and avoid the above-mentioned accidents, etc. Also, since there is a risk of accidents involving people in areas where damage has already occurred, the damaged areas are repaired and strengthened to prevent and avoid the above-mentioned accidents, etc.
It should be noted that when pre-reinforcing a specific area, "pre-reinforcing" refers to a state in which the specific area of the floor surface 2 is free of any damage such as scratches, or the flooring installation work has been completed and the floor surface 2 is still in a new state, and a construction method is adopted to pre-reinforce the floor surface 2 in such a state.

The strengthening method is a reinforcement method when it is applied to a specific area of the floor surface 2 that is not yet damaged, and a repair method when the specific area of the floor surface 2 is already damaged. Also, when the damage is minor, it can be both a repair method and a reinforcement method, but in both cases, the content of the method is essentially the same in that it is a method for strengthening the floor surface 2.
Regarding the effect of the floor strengthening method, whether it is considered as a floor reinforcing method or a floor repair method, there is no difference in that the floor surface 2 is strengthened thereafter and damage such as scratches is reduced. Also, if it is considered as a reinforcement method, the floor surface 2 is strengthened from the beginning of the construction of the method, so worries about damage and repair of the floor surface 2 are reduced and the good environment of the floor surface 2 is maintained for a long time.

In these strengthening methods, measures are taken to strengthen the floor surface 2 in the specific areas, to prevent damage to those areas, and to repair and strengthen damaged areas.
The main components of the reinforcement method are to attach a synthetic resin sheet material 4 (film material) to the specific area of the floor surface 2, and then apply a urethane coating 6 to the upper surface and surrounding area 7 of the sheet material 4.
1 and 2 show a floor structure in which a sheet material 4 is arranged and attached to a floor surface 2, and a urethane coating 6 is further applied.

The sheet material 4 is a synthetic resin material processed into a thin sheet (film). The sheet material 4 has a fixed shape, such as a rectangle, a square, a trapezoid, or a triangle. If necessary, such as for a shape within a specific range, the sheet material may be cut into a predetermined shape.
Rectangular (rectangular, square) sheet materials 4 are used for placement in a specific area on a wide floor surface 2, or for arranging sheet materials 4 side by side mainly in a straight line or in an orthogonal direction. Trapezoidal or triangular sheet materials 4 are used for arranging sheet materials 4 mainly in curved or arc-shaped areas.

The size of the sheet material 4 is about 150 mm to 300 mm in short side (vertical) and 200 mm to 500 mm in long side (horizontal) for a rectangular shape, but larger sizes can also be used. In terms of paper size, this is about A3 size (297 x 420 mm), A4 size (210 x 297 mm), or A5 size (148 x 210 mm). Of course, it is also possible to use A0 size, A1 size, or A2 size sheet material 4, but if the sheet material 4 is large, multiple workers will be required for the placement work, which will be time-consuming.
When the sheet material 4 is a square, the size of the sheet material 4 is the same as that of the rectangular sheet material 4. For example, the sheet material 4 has a side length of 200 mm to 500 mm.

Although a large sheet material 4 may be used by cutting it to a specified size, it is more effective to prepare sheets of a fixed size, for example, a suitable size such as A4 size, and use multiple sheets of these arranged side by side. This is because if the size of the sheet material 4 is appropriate, the sheet material 4 can be attached reliably, the work of attaching the sheet material 4 can be performed efficiently, and the sheet material 4 can be easily managed.

The thickness of the sheet material 4 is preferably in the range of 0.1 mm to 0.5 mm, and here a sheet material 4 with a thickness of 0.3 mm is used. With a thickness in this range, the height difference of the floor surface 2 can be kept appropriate, so that the floor surface 2 does not feel unnatural, and the strength of the floor surface 2 can be sufficiently ensured. If the sheet material 4 is too thick, slight differences in level will occur on the floor surface 2. Furthermore, if the sheet material 4 is too thin, problems such as strength will arise.

When the sheet material 4 is to be placed and attached in the specific range, an appropriate size for the sheet material 4 is 200 mm long and 300 mm wide (approximately A4 size) in terms of workability and placement range. If the sheet material 4 is square, use one with one side measuring approximately 200 mm to 300 mm. Here, A4 size sheet material 4 is mainly used.

Moreover, a mixture of a plurality of types of sheet materials 4, such as rectangular and square, may be used. When the specific area where the sheet material 4 is to be placed is a curved shape such as a corner, it is effective to use sheet materials 4 in a quadrangular shape such as a trapezoid, or in a triangular shape, etc.
If the size of the sheet material 4 is too small, the arrangement is time-consuming, while if it is too large, the area to be arranged and attached becomes unnecessarily large, and the workability is poor.

As materials for the sheet material 4, vinyl chloride-based synthetic resins or acrylic-based synthetic resins are effective for strengthening the floor surface. Vinyl chloride resins are durable and resistant to chemicals, and are flame-retardant and have excellent adhesive properties. Acrylic resins are highly transparent and have excellent weather resistance and durability.
It is efficient to use an adhesive sheet with adhesive (sticky agent) applied to one side of the sheet material 4, which simplifies the application process and facilitates maintenance of the sheet material 4. Of course, an adhesive (sticky agent) may be applied separately to the floor surface 2, and then the sheet material 4 may be applied.

FIG. 1 shows a floor structure in which a specific area is reinforced as part of a large floor 2 of a gymnasium or the like, and shows the arrangement of sheet material 4 and urethane coating 6 on the floor 2.
When applying the reinforcement method to the floor surface 2 of a gymnasium or the like, it is applied to specific areas such as the front (attack) zone of a volleyball court, near the goal of a basketball court, and at the entrances and exits of the building. The reinforcement method is also applied in the same way when damage occurs in these specific areas.

FIG. 2 shows a floor structure for reinforcing a specific area of a straight or curved floor surface 2 such as a corridor, and shows the arrangement of sheet material 4 and urethane coating 6 on the floor surface 2.
When applying the reinforcement method to a corridor, etc., it is applied to specific areas of the floor surface 2, such as straight lines along the corridor or curved lines (corners) that bend at right angles (curves). The method is applied to corridors, for example, in areas where transport vehicles and carts pass, and in areas where the left and right wheels of vehicles pass, such as the left and right sides of the center of the corridor. The reinforcement method is also applied in cases where damage has occurred in these areas.

Here, the process of attaching (adhering) the sheet material 4 and the process of painting with urethane paint will be explained. When attaching the sheet material 4 to a location in the specific range, multiple sheet materials 4 are arranged side by side in the area and adhered (adhered) to them. Here, an A4-sized adhesive sheet with an adhesive applied to the back side is used as the sheet material 4. Once the release paper is peeled off from the adhesive (layer), the sheet material 4 can be adhered (adhered, glued) to the floor surface 2 as is, making the work easy.

The sheet materials 4 are usually arranged one by one in the left-right and front-rear (front-rear) directions. However, depending on the location, they may be arranged in two layers or three or more layers. In this case, it is preferable to arrange the upper and lower sheet materials 4 so that their end sides do not overlap each other by shifting them by about half a side.
By placing and attaching the sheet material 4 to the floor surface 2 in this manner, the strength of the floor surface 2 is increased.

In addition, it is preferable to butt the edges of adjacent sheet materials 4 together (in close contact) and attach them without overlapping, but in places with gentle steps or curves, the ends of the sheets may be slightly overlapped when attached. Note that adhesive may be applied to the ends of the sheet materials 4 to reinforce their attachment.
When the portion where the sheet material 4 is to be placed is curved, a sheet material 4 other than a rectangular shape, for example a trapezoidal or triangular shape, is used for the corresponding portion, and the sheet materials 4 of each shape are combined and placed to form a curved line. The trapezoidal or triangular shape sheet material 4 may be formed by cutting a rectangular sheet material 4 on-site.

Furthermore, in addition to arranging and attaching the sheet material 4, a urethane coating 6 is applied to the upper surface of the sheet material 4 and its peripheral area 7. The sheet material 4 alone strengthens the floor surface 2, but adding the urethane coating 6 to this further improves the strength, durability, etc.
A urethane paint containing urethane resin as a main component is used for the urethane coating 6. There are one-component and two-component urethane paints, but here, a water-based two-component paint with high coating film performance and adhesion is used.

The range of the peripheral area 7 to which the urethane coating 6 is applied is 10 mm or more, 10 mm to 30 mm, and preferably 20 mm to 30 mm from the end of the sheet material 4. When the urethane coating 6 is applied in this range, the slippage between the boundary of the sheet material 4 and the urethane coating 6 and between the urethane coating 6 and the rest of the floor surface 2 is uniformed, resulting in a natural floor surface 2.

In this way, the urethane coating 6 is applied to the entire top surface of the sheet material 4, and also to the peripheral portion 7 of the sheet material 4. The urethane coating 6 is applied by using a brush or the like. This urethane coating 6 can reinforce the sheet material 4, and also improves the coefficient of friction of the sheet material 4 so that it blends in with other floor surfaces. In other words, applying the urethane coating 6 can make the friction of the sheet material 4 blend in with the friction of the floor surface 2, making it possible to make the sliding between the sheet material 4 and the surrounding floor surfaces 2 uniform. This can prevent tripping or the like when a person moves between the floor surface 2 on which the sheet material 2 is placed and other floor surfaces 2.

For this reason, it is effective to make the coefficient of friction of the floor surface 2 after the urethane coating 6 is the same or approximately the same as the coefficient of friction of the surrounding floor surfaces 2 that are not coated with the same coating, and this reduces the sense of incongruity. Furthermore, gymnasium floors are usually coated with a similar coating, and the urethane coating 6 blends in with other floor surfaces in terms of coefficient of friction, etc. The urethane coating 6 also has a moderate grip, making it suitable for sports-related floor surfaces 2, etc.

Figures 1(a), (b), and (c) show various arrangements in which sheet material 4 is arranged and attached to a specific area of a large floor surface 2, and then urethane paint 6 is applied from above. In Figure 1(a), the ends (sides) of each sheet material 4 are in close contact with each other in the left-right and front-back (front to back) directions, and the sheet materials 4 are arranged and attached to the floor surface 2. Here, all the sheet materials 4 used are rectangular and of the same size.

In this case, the sheet materials 4 are arranged in a line in the left-right direction, with no gaps between each sheet material 4, and are attached to the floor surface 2. As for the front-rear direction side, the sheet materials 4 are arranged and attached in the left-right direction for each front step or rear step in the same manner as described above. The front and rear sheet materials 4 are also arranged in the same manner with no gaps between them.
The sheet material 4 may be attached without overlapping (single layer), but may be attached in double or triple layers depending on the location to increase strength.

The urethane coating 6 is applied continuously and uniformly to the top surface of all the sheet materials 4 and their peripheral areas 7. Here, the peripheral areas 7 of the sheet materials 4 refer to the periphery of the outermost sheet material 4 (areas of the floor surface 2 where no sheet material 4 is placed) among the sheet materials 4 placed in the front, back, left and right directions on the floor surface 2 in a specific area.

In Fig. 1(b), the edges are aligned and arranged side by side in one direction (left-right direction) (a seam topography), and in the front-rear direction (front-rear direction) perpendicular to the left-right direction, the edges are shifted by half so that the seams between the front and rear do not overlap (a horse-tread topography). Here, the sheet materials 4 used are all rectangular and of the same size.
The urethane coating 6 is applied to the upper surface and peripheral portion 7 of all the sheet materials 4 .

In Fig. 3(c), the sheet materials 4 are placed on the floor surface 2 with their ends (each side) tightly attached to each other in the left-right and front-back directions. In this case, the sheet materials 4 are arranged and attached in a mixture of rectangular and square shapes whose short sides are the same length as the rectangular and square shapes. Here, square sheet materials 4 are placed on the left and right ends, and the horizontal (left and right) lengths are adjusted. The urethane coating 6 is applied to the top surfaces and peripheral areas 7 of all the sheet materials 4.

Figures 2(a) and (b) show the arrangement of sheet material 4 placed and attached to floor surface 2 in each specific area, such as a straight line in a corridor or a right-angled (or curved) area such as a corner. Normally, when transporting goods through a corridor, heavy machinery or a cart equipped with four (or three) wheels or casters is used. In this case, sheet material 4 is placed in a straight line or curve on the left and right of the center of the corridor where the wheels of the vehicle pass.

In the figure (a), sheet materials 4 are arranged and attached in two parallel rows to the floor surface 2 of a straight corridor where wheels pass. A urethane coating 6 is then continuously applied to the top surface and peripheral area 7 of each of the row-arranged sheet materials 4.

Figure (b) shows the state in which sheet material 4 has been placed and attached at a point where the corridor turns at a right angle. At such a point, vehicles and the like pass through while making a curved turn. The sheet material 4 is also placed along the outer and inner lines of the wheels so as to trace the line (trajectory) that the wheels of the vehicle pass through. For this reason, in addition to rectangular (rectangular and square) sheet material 4, trapezoidal and triangular sheet material 4 are used and placed in a curved line.

For example, trapezoidal sheet materials 4 are combined and arranged in a curved line on the outer line. Square sheet materials 4 are arranged on the inner line at the corners, and triangular (right-angled) sheet materials 4 are arranged inside the corners to make it easier for vehicles to pass through in a curved line, allowing the wheels to pass easily above the sheet materials 4. Then, urethane paint 6 is applied to the upper surface and peripheral area 7 of each sheet material 4 arranged in a row.

The basic steps of the work process in the floor strengthening method (reinforcement method or repair method) are as follows.
(1) Floor Cleaning and Polishing Process for the Floor Surface 2 First, the surface of the floor surface 2 in the specific area is checked for scratches, etc., and if scratches, etc. are found, the surface is repaired with putty or the like.
Then, the floor is cleaned, washed, and polished using a polisher, etc.
(2) Step of applying (bonding) sheet material 4 In order to strengthen a specific area of floor surface 2, sheet material 4 is placed on that area of floor surface 2 and applied. When applying sheet material 4, it is effective to use a roller or the like to prevent air from getting under the back surface of sheet material 4 (between it and floor surface 2).
When attaching the sheet material 4, sheets of a predetermined shape (e.g., A4 size) are arranged in a required area. If the required area is narrow, a sheet material 4 formed in a predetermined shape may be used. If the size of the sheet material 4 is large, it is recommended that the work be performed by two or more people.
(3) Surface Treatment (Polishing) Step of Sheet Material 4 The surface of the attached sheet material 4 is polished (grinded) with a polisher or the like so that the paint (urethane coating 6) blends well with the sheet material 4.
(4) Painting process (first time)
Thereafter, a urethane coating 6 (first coat) is applied to the surface of the attached sheet material 4 and its surrounding area.
(5) Painting process (2nd time)
After the first urethane coating 6 has been applied and the coating has dried, the surface of the urethane coating 6 is polished with a polisher or the like, and another urethane coating 6 is applied on top of the first urethane coating 6.
The above is the basic work process for the floor reinforcement method.

Therefore, according to the floor reinforcement method, the strength of the floor surface 2 is increased by attaching the sheet material 4, and even when a heavy load is applied, the floor material is less likely to be damaged, such as splintered, cracked, dented, or peeled off, and the need for repairs is avoided. The floor surface 2 is reinforced, ensuring its strength and safety. In addition, the sheet material 4 can be easily positioned, making it easy to install.

Furthermore, with the floor strengthening method, the attachment of the sheet material 4 effectively improves damaged areas and increases the strength of the floor surface 2, making the floor surface 2 less likely to be damaged even when a heavy load is subsequently applied, and ensuring the safety of the floor surface 2. Furthermore, the urethane coating 6 on the top surface, etc. of the sheet material 4 makes it easier to slide with the surrounding floor surface 2, forming a natural floor surface 2 and preventing tripping, and in addition, the urethane coating 6 reinforces the attachment of the sheet material 4 and improves durability.

2 Floor surface 4 Sheet material 6 Urethane coating 7 Surrounding area

Claims (7)

A synthetic resin sheet material is attached in advance to specific areas of a floor surface where wood-based flooring materials have been installed and where damage is expected due to the application of high loads and high frictional forces.
The floor reinforcement method further comprises applying a urethane coating to the upper surface and peripheral portion of the sheet material so that the upper surface and peripheral portion are continuous , thereby reinforcing and strengthening the sheet material. A synthetic resin sheet material is attached to a specific area of a floor surface where wood-based flooring has been installed and has been damaged due to the application of high load and high frictional force.
The floor reinforcement method further comprises applying a urethane coating to the upper surface and peripheral portion of the sheet material so that the upper surface and peripheral portion are continuous , thereby repairing and strengthening the sheet material. 3. The floor reinforcement method according to claim 1, wherein the urethane coating is applied to the upper surface of the sheet material and within a range of 10 mm to 30 mm from the end of the sheet material . In the method for reinforcing a floor according to any one of claims 1 to 3 ,
polishing a specific area of the floor surface;
attaching the sheet material to the specific area;
polishing the upper surface of the attached sheet material;
A floor reinforcement method comprising the steps of: applying the urethane coating to the polished upper surface and peripheral portions of the sheet material such that the upper surface and peripheral portions are continuous . The method for reinforcing a floor according to claim 4 , further comprising:
After the painting step, a step of polishing the upper surface of the urethane coating;
A floor reinforcement method comprising the steps of: (a) applying another coat of urethane to the polished upper surface of the urethane coating; The method for reinforcing a floor according to any one of claims 1 to 5 , characterized in that the thickness of the sheet material is in the range of 0.1 mm to 0.5 mm. A floor reinforcement method as described in any one of claims 1 to 6 , characterized in that when attaching the sheet material, multiple rectangular sheet materials are used, and these sheet materials are lined up and placed in a specific area of the floor surface and attached.

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