JP5740657B1 - Protective film on floor and method for forming the same - Google Patents

Abstract

An object of the present invention is a highly durable floor surface protective film that can maintain gloss for a relatively long period of time and does not easily cause scratches, etc. Even if it occurs, by carrying out maintenance that does not require work such as regular dry maintenance of about once every January to April, that is, work that uses a release agent and a large amount of water, such as work to remove the wax film, Remove the dirt, darkening, or scratches on the surface to restore sufficient gloss. A lower layer 2 made of an elastic paint having a surface hardness of F to 1H and a thickness of 10 μm to 50 μm, and a surface applied on the lower layer 2, applied on the target floor surface 1. The upper layer 3 is made of the same kind of elastic paint having a hardness of 1H to 2H and a thickness of 4 to 16 μm. [Selection] Figure 1

Description

  The present invention relates to a protective film for a floor surface applied to the floor surface of a building such as various public facilities, stores, hospitals or offices, and a method for forming the same.

  Protective coatings formed by applying wax as a floor protective coating have been widely used in the past, but floor protective coatings with such waxes are easily discolored and easily dissolved in water, alcohol, etc. There are drawbacks. Further, the wax protective film is easily worn by a person walking or the like, and when it becomes thin, there is a problem that it becomes slippery. Thus, in many cases, it is necessary to reapply wax during maintenance.

  As described above, the protective film made of wax needs to be applied repeatedly within a short period of time. However, if the coating is repeated, the wax protective film becomes dirty between the applied layers and gradually becomes unsightly. It is normal. Therefore, in a relatively short period of time, it is necessary to peel off the existing protective film made of wax and reapply a new protective film.

  In addition, when re-applying the wax protective film, a release agent is required to remove the existing wax protective film. Therefore, when the protective film is removed, a waste liquid containing the release agent is generated, Although it is necessary to treat the waste liquid, the treatment is extremely troublesome, and if the waste liquid is discarded as it is, a pollution problem may occur.

  Therefore, in order to avoid such waste liquid processing problems and to construct a more durable protective film, it is considered to adopt other various protective films in place of the protective film by applying wax. Or is being implemented.

  For example, it is formation of the protective film by the glass coating shown by patent document 1, and this applies a normal temperature hardening type glass coating agent to the floor surface etc. of a building, and forms a protective film.

  According to the protective film formed by applying the room temperature curable glass coating agent of Patent Document 1, the hardness is extremely high (pencil hardness 9H), the gloss is good, and scratches do not easily occur. Also, the antifouling property is very high. However, even if the hardness is high, it will inevitably lose its luster or cause scratches due to long-term use, but it is extremely high and can be treated with a buffing device. It is almost impossible to restore it. The protective film formed by this glass coating agent is very thin and has no elasticity. Therefore, when the floor surface is made of elastic members, if the floor surface vibrates or bends during walking of a person or moving a heavy object, There is a risk of cracking. In addition, since this glass coating agent contains an organic solvent, when it is applied to form a protective film, it volatilizes and may adversely affect the human body and the like.

  Further, there is a protective film formed by applying a urethane-based paint disclosed in Patent Document 2 to this type. Patent Document 2 is a method for cleaning and regenerating a wooden or resin-based floor. As a result of carrying out this method, a protective film is formed by applying the above urethane-based paint.

  The method of cleaning and regenerating a woody or resin-based floor in Patent Document 2 includes a step of waterproofing, a step of washing the floor with water, a step of removing the sewage from the water washing and drying the floor, It comprises a step of polishing the surface and a step of applying and drying a urethane-based paint on the floor. The floor is applied to that composed of wood board, cork, resin sheet, resin tile, and the urethane-based paint adopts it containing an ultraviolet deterioration preventing agent.

  When the method of Patent Document 2 is carried out, as described above, a protective film is formed by applying urethane-based paint on the floor surface, and it is unclear how hard it is, but it depends on wax. Compared to the protective film, it is certain that it has sufficiently high wear resistance and peeling resistance. However, for example, even if a protective film made of high hardness is formed, it will be unavoidable that some scratches will occur after about several months although it depends on the amount of walking, etc. If the hardness of the protective film is high For example, the process of eliminating the scratches using a buffing device or the like cannot be easily performed. In addition, when a certain amount of time has passed and a wide range of stains, darkening, and scratches, etc., that cannot be easily recovered, this protective film must be peeled off and repainted. Protective coatings based on coatings are difficult to peel off and cannot be easily repainted.

JP 2002-001214 A Japanese Patent Laid-Open No. 2001-225035

  The present invention is a highly durable floor surface protective film that can maintain gloss over a relatively long period of time and does not easily generate scratches. Even if it occurs, perform regular dry maintenance once every 1 to 4 months, that is, maintenance that does not require a work such as using a peeling agent and a large amount of water, such as a wax film peeling work. Therefore, it is an object of the present invention to provide a protective film for a floor and a method for forming the same that can remove the above-mentioned dirt, darkening, scratches, and the like, and can restore sufficient gloss.

1 of the present invention includes a lower layer coated on the floor surface of the object, and the upper layer was coated on the lower layer, in the configuration, the lower layer is a pencil in order to stably support the upper layer A surface hardness of not less than F and a pencil hardness of 1H or less to absorb the impact received by the upper layer, 10 μm or more to avoid cracking of the upper layer, and 50 μm or less to suppress the coating operation within two times. The thickness of the elastic coating is such that the upper layer has a pencil hardness of 1H or more in order to suppress the occurrence of scratches, and a surface hardness of 2H or less in order to polish and eliminate the scratches, and the depth of the scratches. Is an elastic paint of the same type as the lower layer, which has a thickness of 4 μm or more in order to suppress exceeding the thickness of the layer and 16 μm or less in order to suppress the coating operation within two times, and periodically wears the upper layer. For the upper layer The elastic coating material is applied to maintain the gloss by polishing after curing drying, a protective coating of a floor surface, characterized in that.

2 of the present invention is the protective film for a floor surface according to 1 of the present invention,
An aqueous two-component polyurethane resin paint is adopted as the elastic paint.

3 of the present invention is the protective film of the floor surface according to 1 or 2 of the present invention,
The lower layer is constituted by one application of an elastic paint or one application of coating applied in addition to the one application.

4 of the present invention is a method for forming a protective film on a floor surface in which a lower layer is applied on the floor surface , and then the upper layer is applied on the lower layer, and the lower layer stably supports the upper layer. In order to absorb the impact received by the upper layer in order to absorb the impact received by the upper layer, the surface hardness is set to 1H or lower in order to avoid cracking of the upper layer, and to suppress the coating operation within two times. It is an elastic paint having a thickness of 50 μm or less, and the upper layer has a pencil hardness of 1H or more in order to suppress the generation of scratches, and a surface hardness of 2H or less in order to polish and remove the scratches. In order to suppress the depth of the layer from exceeding the thickness of the layer, it is an elastic paint of the same type as the lower layer having a thickness of 4 μm or more and a thickness of 16 μm or less to suppress the coating operation within two times. Upper layer wear Site elastic paint for the upper layer was applied to the, to maintain the gloss by polishing after curing drying, a method of forming the protective coating of the floor, characterized in that.

5 of the present invention is a method for forming a protective film on a floor according to 4 of the present invention,
An aqueous two-component polyurethane resin paint is adopted as the elastic paint.

6 of the present invention is a method for forming a protective film on a floor surface according to 4 or 5 of the present invention,
The lower layer is composed of a single application of elastic paint or a single overcoat applied in addition to the single application, and the upper layer is applied over a single time or applied once. It consists of application.

  According to the protective film of the floor surface of 1 of the present invention, the hardness of the upper coating surface, which is the surface of the protective film, is set to 1H to 2H, and the thickness thereof is set to 4 to 16 μm. Since the surface hardness is set to F to 1H and the thickness is set to 10 to 50 μm, the impact of walking of a pedestrian walking on it is absorbed by the slight elasticity of the lower layer paint, However, scratches such as cracks are unlikely to occur on the upper coating surface, which is the surface of the protective film. In addition, since the surface hardness of the upper layer coating itself, which is the surface of the protective film, is set to an appropriate hardness of 1H to 2H as described above, the occurrence of scratches due to human walking, movement of articles, etc. is further reduced. Yes.

  The coating film formed by the elastic paint constituting the lower layer should have a thickness of 10 μm or more in order to obtain appropriate elasticity for avoiding cracking of the upper coating film, and is as thick as possible. However, if the thickness exceeds 50 μm, three or more coating operations are required, and it is not a simple protective film forming operation. Therefore, the thickness is suppressed to 50 μm. In addition, the coating film constituting the upper layer must be 4 μm or more so that the depth of scratches such as scratches does not easily exceed the thickness of the layer. Although it is preferable that the thickness is greater than 16 μm, when an elastic paint having a corresponding hardness is applied, three or more coating operations are required, and this is not a simple protective film forming operation. Therefore, the upper limit of the film thickness is determined as described above.

  In addition, the surface hardness of the lower layer coating film is required to be F to 1H as described above in order to absorb the impact in order to prevent the above-described cracking of the upper layer coating film. If the hardness exceeds the upper limit, the impact cannot be absorbed. If the hardness is lower, the upper layer cannot be stably supported. Further, the surface hardness of the upper layer coating is preferably 1H or higher so that it does not easily cause scratches or cracks. If it exceeds 2H, the generated scratches or cracks are buffed. It cannot be polished with a device. Therefore, it should be 2H or less. These findings are obtained independently by the present inventors.

  As described above, according to the protective film for floor surface of 1 of the present invention, since the above-mentioned reason and the surface hardness are sufficiently high, cracks and scratches are not easily generated on the surface. Or a large amount of walking on the surface, for example, a long period of time such as 1 to 4 months. It ’s hard. Further, as described above, the protective film for floor surface according to 1 of the present invention is higher in hardness than the protective film made of wax, so that it is not easy to peel it off, but the surface hardness is 1H. According to the knowledge of the inventor of the present invention, it is possible to remove such fine scratches, adhering dirt, cloudiness, etc. by polishing with a buffing device, and to restore the gloss at the time of application. .

  Moreover, according to the protective film for floor surface 1 of the present invention, the surface hardness of the upper layer is set to 1H to 2H as described above, and as described above, scratches or the like are not easily generated. Although it has strength, it is not extremely high surface hardness like 9H of the protective film by glass coating. In such a case, partial wear may occur in a large amount of part. In such a case, the worn part should be thoroughly cleaned and the upper layer should be filled to fill the worn part. If an elastic paint having a surface hardness of 1H to 2H is thinly applied, and cured and dried, and then polished with the buffing device, the boundary and the like become unclear and a sufficiently beautiful floor protective film can be reproduced.

  As described above, according to the protective film for a floor surface according to 1 of the present invention, once this is applied to the floor surface, maintenance is performed every 1 to 4 months according to the walking amount of the person on the floor surface. By applying the simple treatment described above, a beautiful floor surface protective film can be maintained over a long period of time.

  According to the protective film for floor surface 2 of the present invention, since an aqueous two-component polyurethane resin paint is adopted as the elastic paint, it can be easily obtained in the two surface hardness ranges, and is not easily discolored. The protective film for the floor surface having all the effects of the first aspect of the invention can be easily constructed.

  According to the protective film for floor surface 3 of the present invention, both the upper layer and the lower layer can be easily produced by a coating operation of twice or less.

  According to the method for forming a protective film for a floor surface according to the fourth aspect of the present invention, the protective film for a floor surface according to the first aspect of the present invention can be configured appropriately and simply.

  According to the method for forming a protective film for a floor surface according to the fifth aspect of the present invention, the protective film for a floor surface according to the second aspect of the present invention that is not easily discolored can be easily obtained.

  According to the method for forming a protective film on a floor surface according to the sixth aspect of the present invention, the operation of applying the elastic paint can be completed at most two times for both the lower layer and the upper layer. Good workability.

Cross-sectional explanatory drawing of the protective film of the floor surface of the Example using a water-based two-component polyurethane resin coating material.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  The protective film for the floor surface of this embodiment is applied to the target floor surface 1, the lower layer 2 composed of an elastic paint having a surface hardness of F to 1H and a thickness t1 of 10 μm to 50 μm, and the lower layer 2. The upper layer 3 is made of the same kind of elastic paint having a surface hardness of 1H to 2H and a thickness t2 of 4 to 16 μm.

  The floor surface 1 may be made of any material as long as the elastic paint can be fixed thereon. For example, as will be described later, when an aqueous two-component polyurethane resin paint is used as the elastic paint, the currently used material, for example, wood, stone, plastic, linoleum or other flooring is targeted. It can be. Among them, it is optimal to apply to vinyl chloride (plastic) floors.

  As the elastic paint, it is optimal to employ the aqueous two-component polyurethane resin paint. There is an approximate one-component water-based polyurethane resin paint, which is good for workability but easily discolored, and is not suitable for floor surfaces with a weak surface and a large amount of walking. The water-based two-component polyurethane resin paint is difficult to discolor after coating, has an excellent gloss, has a moderate surface strength, is excellent in durability and water resistance, and can be used on a floor with a lot of walking. It is. It is also water-based and has the advantage of not using an organic solvent. Good adhesion to the target floor. The paint has a hardness within the range required by the present invention, and it can be easily selected with a desired hardness. Furthermore, it also has a transparent one that can bring out the color and texture of the floor as it is, and the water-based two-component polyurethane resin paint is optimal in these respects.

  The aqueous two-component polyurethane resin paint adopts either a surface hardness in the range of F to 1H or a surface hardness in the range of 1H to 2H, and uses the former as an elastic paint for the lower layer 2; The latter is used as an elastic paint for the upper layer 3.

  The lower layer 2 needs to be thickly coated in order to increase the durability of the protective film, but this hardness of the aqueous two-component polyurethane resin paint, in the range of F to 1H, is 15-30 μm thick with a single layer coating. Is possible. In addition, when it is applied to a flooring, it can be absorbed even if the flooring expands or contracts due to a change in temperature, and the adhesion to the flooring is not easily lost. In addition, as described above, the lower surface of the lower layer 2 made of the coating material having the hardness naturally expands and contracts as the floor material expands and contracts. The expansion and contraction of the upper surface of the is smaller than that.

  In addition, when trying to improve durability further, the aqueous two-component polyurethane resin coating material which comprises the said lower layer 2 can be comprised, and it coats | covers on two layers and can comprise. Thus, the thickness of the lower layer 2 can be increased to approximately 50 μm. It is not preferable to use more than three layers because it is difficult to form a protective film in one day in consideration of the curing and drying time of each layer.

  As described above, the aqueous two-component polyurethane resin paint used as the elastic paint for the upper layer 3 has a surface hardness in the range of 1H to 2H, and the thickness that can be applied in one layer is as thin as 6 μm to 8 μm. Become. If it is appropriate to increase the thickness from the viewpoint of durability in accordance with the requirements of the target floor surface, each layer is adjusted to be thicker, and is applied in two layers, and the thickness is increased to 16 μm.

  As described above, the water-based two-component polyurethane resin paint for the upper layer 3 has high hardness, and therefore has less elasticity than that of the lower layer 2, but the upper surface of the lower layer 2 that is in contact with the lower surface of the upper layer 3. The expansion and contraction of the lower layer 2 is sufficiently small if the lower layer 2 is thickly coated as described above. Therefore, even if the target floor surface expands and contracts relatively greatly due to a temperature change, the influence transmitted to the paint of the upper layer 3 It becomes smaller and hardly cracks.

  As described above, the upper layer 3 can withstand heavy walking with a large amount of walking by using an aqueous two-component polyurethane resin coating having a surface hardness of 1H to 2H, and can be protected by walking or the like. When the surface of the upper layer 3 which is the surface of the film loses its gloss due to the occurrence of fine scratches such as scratches, it can be recovered by polishing with a buffing device. By making the surface hardness 1H or more, the occurrence of scratches such as scratches due to walking etc. is minimized, while by making it 2H or less, it is polished with a buffing device to remove the scratches etc. generated on them, It is possible to restore the gloss. When the hardness is 3H or more, the generated scratches and the like cannot be removed by the buffing apparatus, which is inconvenient. Even when the hardness is 3H or more, scratches and the like are gradually generated.

The protective film of the floor surface of the above embodiment is formed on the floor surface as follows.
As described above, the protective film of the floor surface of this embodiment can be formed on various floor surfaces as well as the floor surface of a specific floor material. As described above, the water-based two-component polyurethane resin paint is suitable as an elastic paint, and when this is used, it can be formed on a floor using a wide variety of floor materials. However, it is particularly suitable to apply to a floor composed of a vinyl chloride (plastic) flooring material.

Prior to the formation of the protective film on the floor surface, the floor surface is pretreated.
As the pretreatment, when the target floor surface is a new floor surface that has not been provided with a protective film, it is only necessary to sufficiently clean the upper surface.
As pretreatment, when the target floor surface is waxed as a protective film, the peeling operation is performed. This can be done by common techniques. For example, the stripping operation is performed using a stripping agent that matches the properties of the applied wax. In order to reliably remove the existing wax, the peeling operation is repeated twice in some cases. The sewage produced by this stripping operation is treated using a sewage treatment agent. If the floor surface is damaged, perform necessary repairs. Also, if the adhesion of the floor surface to the elastic coating material constituting the protective film is poor, in any case, an anchor treatment agent (adhesive) or an aqueous primer is applied in advance to ensure adhesion. It is good to leave.

  After the pretreatment as described above, an elastic paint is applied. Of course, the coating is applied from the lower layer 2. The elastic paint constituting the lower layer 2 is applied to a thickness of 10 μm to 50 μm on the target floor surface using any one of the surface hardness F to 1H. This is performed using a mop or the like after curing with masking tape or a masker or the like on a part where a protective film is not formed, for example, a floor inspection groove, an outlet, an uplift or a partition door groove.

  As described above, when the water-based two-component polyurethane resin paint is used as the elastic paint, the surface hardness of the coating film formed by applying to the commercially available one becomes F to 1H, and about 15 μm by one application. Alternatively, there is one that can be formed to a film thickness of about 25 μm. For example, if the surface hardness is any one of F to 1H, and it can be formed to a film thickness of 15 μm by one application, one time is adopted. The lower layer 2 having a thickness of about 15 μm can be formed by applying the above. Furthermore, if it is overcoated, the lower layer 2 having a film thickness of about 30 μm can be formed. If the surface hardness is any of 1H to 1H and can be formed to a film thickness of 25 μm by a single application, the lower layer 2 having a film thickness of about 25 μm can be formed by a single application, and overcoating Then, the lower layer 2 having a film thickness of about 50 μm can be formed. If they are combined and applied twice, the lower layer 2 having a thickness of about 40 μm can be formed.

  Needless to say, overcoating is performed after the lower layer is cured and dried. In the case of a room where the air flow is poor, it is appropriate to send air with a blower to speed up drying. Moreover, application | coating of these water-based two-component polyurethane resin paints can be performed using a mop etc. by a general technique.

  Next, the upper layer 3 is applied on the lower layer 2. This is naturally performed after the lower layer 2 is cured and dried. It should be noted that the cured and dried state of the lower layer 2 should be sufficiently confirmed over the entire coated surface.

  The upper layer 3 is a paint of the same type as the elastic paint of the lower layer 2 and has a surface hardness of 1H to 2H, and can be formed to a film thickness of about 6 to 8 μm by applying one layer. The coating operation is performed using a mop or the like in the same manner as the coating of 2. When it is desired to form a thickness of about 16 μm, the same elastic paint is applied again after confirming the previously cured and dried state of one layer.

  As an elastic paint used for the upper layer 3, when an aqueous two-component polyurethane resin paint is adopted as the elastic paint of the lower layer 2, an aqueous two-component polyurethane resin paint is similarly adopted. Some water-based two-component polyurethane resin paints have a surface hardness of 1H to 2H formed by application, and can be formed to a film thickness of about 6 μm or about 8 μm by one application. For example, if the surface hardness is any one of 1H to 2H and can be formed to a film thickness of 6 μm by one application, the upper layer 3 having a thickness of about 6 μm is formed by one application. can do. Furthermore, if it is overcoated, the upper layer 3 having a film thickness of about 12 μm can be formed. If the surface hardness is any of 1H to 2H and can be formed to a film thickness of 8 μm by one application, the upper layer 3 having a thickness of about 8 μm can be formed by one application. Further, if this is further applied, the upper layer 3 having a film thickness of about 16 μm can be formed. If they are combined and applied twice, the upper layer 3 having a film thickness of about 14 μm can be formed.

  Needless to say, in the case of overcoating, as in the case of the lower layer 2, the lower layer is cured and dried. In the case of a room with a poor air flow, it is also appropriate to send air with a blower to accelerate drying. Moreover, application | coating of these water-based two-component polyurethane resin paints can be performed using a mop etc. by a general technique.

  In addition, each curing and drying time for each of the lower layer 2 and the upper layer 3 described above is almost the same regardless of the surface hardness when an aqueous two-component polyurethane resin paint is used as the elastic paint. When the ambient temperature is 10 ° C., it is 2 to 3 hours, when the ambient temperature is 20 ° C., it is 1 to 2 hours, and when the ambient temperature is 30 ° C., it is within 1 hour.

  Therefore, if the lower layer 2 and the upper layer 3 are coated twice or less, the method for forming a protective coating on the floor according to this embodiment can be executed in a relatively short time.

  Further, the floor surface protective film of this embodiment formed in this way has a surface hardness of the upper layer 3 of 1H to 2H as described above. The occurrence of scratches is reduced. Furthermore, this floor protective film has a coating of the lower layer 2 set to a surface hardness of F to 1H and a thickness of 10 to 50 μm, so that a pedestrian walking on the floor surface to which the protective film is applied. Impacts due to walking or movement of articles are absorbed by the elasticity of the lower layer 2 coating, and cracks and other scratches are less likely to occur on the upper surface 3 coating surface, which is the surface of the protective film, for the amount of walking. .

  As a matter of course, a thicker protective film is preferable because a thicker film does not cover the entire layer when damaged. However, since the upper layer 3 has a high hardness as described above, it is difficult to coat with a single layer. Therefore, in order to increase the film thickness, many layers of coating are required. However, it takes too much time and the efficiency is poor. In this embodiment to which the present invention is applied, when the lower layer 2 having a low hardness that can be thickly coated is formed below the upper layer 3 having a high hardness, if the surface of the upper layer 3 is damaged, that is the entire layer. It is also a thing to avoid extending to.

  In addition, since the coating film which comprises the said lower layer 2 is comprised by 10 micrometers or more, it has an appropriate elastic expansion-contraction for avoiding the crack of the coating film of the upper layer 3. FIG. On the other hand, since it is configured to be 50 μm or less, it can be formed by a simple protective film forming operation by a coating operation within two times.

  Further, the upper layer 3 is configured to have a film thickness of 4 μm or more. Therefore, the coating film constituting the upper layer 3 is not easily cracked or scratched by the thickness of the layer. Moreover, since it comprised in 16 micrometers or less, this can also be formed by the formation operation | work of a simple protective film 2 times or less.

  Furthermore, since the surface hardness of the upper layer 3 is set between 1H and 2H, it does not easily cause scratches or the like when a person walks slightly, but gradually occurs when a large number of people walk repeatedly. It is inevitable to do. However, in the case of this hardness, the generated scratches and the like can be eliminated by polishing with various buffing apparatuses. If it exceeds 2H, scratches and the like can hardly be eliminated even if it is polished with a buffing device.

  As described above, according to the protective film of the floor surface of this embodiment, as described above, the surface is not easily cracked or scratched. Depending on the amount of walking or the like, for example, it is unavoidable that the scratches and the like are gradually generated due to the passage of a period of 1 to 4 months or the like, and the surface is cloudy or dirty. In addition, as described above, the floor protective film of this embodiment has a higher hardness than the wax protective film, so that it is not easy to peel it off, but the surface hardness is 1H. It is between ˜2H, and by polishing with various buffing devices, it is possible to remove such fine scratches, adhering dirt or cloudiness, and to restore the gloss when applied.

  Although the protective film of the floor surface of this embodiment is excellent in durability, it may be partially worn by heavy walking or the like. In such a case, after sufficiently cleaning such a worn part, in order to fill the worn part, thinly apply an elastic paint having a surface hardness of 1H to 2H for the upper layer, and after curing and drying. If polished with the buffing device, the boundary and the like become unclear and can be restored to a sufficiently beautiful protective film on the floor.

  Thus, according to the protective film of the floor surface of this embodiment, once this is applied to the floor surface, the maintenance performed every 1 to 4 months according to the amount of walking of the person on the floor surface, etc. By applying the simple treatment described above, a beautiful floor surface protective film can be maintained over a long period of time.

  When the water-based two-component polyurethane resin paint is used as the elastic paint, it is possible to obtain all the above actions and effects. Further, there is an advantage that the color is not easily changed.

The target floor is a vinyl chloride floor in one of our offices.
Since the floor surface was waxed, it is peeled off first. This wax removal treatment was performed by an existing method. Damage found on the floor was also repaired using existing technology.

Thereafter, a protective film is formed on the target floor surface 1.
First, curing treatment is performed using existing technology using tape for curing on the surroundings or on the part where the protective film is not applied.

Thereafter, as the lower layer 2, an elastic paint is applied on the upper surface of the floor. As the elastic coating material, in Example 1, a transparent and elastic aqueous two-component polyurethane resin coating material having a surface hardness of 1H is employed, and the ratio of the main agent, the curing agent, and water is 100: 9: 5 (volume ratio). And the coating liquid mixture was applied to a thickness of about 15 μm. Since the remaining amount of the active ingredient after volatilization of the coating liquid mixture of Example 1 is 30%, the coating liquid mixture is applied to 1 m ² of the floor surface in order to make the film thickness about 15 μm as described above. 50 cc was applied. This application was performed using a mop.

  In this way, the coating liquid mixture was applied to the entire floor 1 of the object, and the coating of the lower layer 2 was completed. Thereafter, after about 1 hour and 20 minutes, it was confirmed that the paint on the coated surface was cured and dried. The indoor temperature at this time was 22 ° C.

Thereafter, the upper layer 3 is coated on the lower layer 2.
As the elastic paint used for the upper layer 3, in this Example 1, a water-based two-component polyurethane resin paint of the same type as that used for the lower layer 2 having a surface hardness of 2H is used, and its main agent and curing agent are used. Were mixed at a ratio of 100: 6 (volume ratio), and this paint mixture was applied to a thickness of about 6 μm. Since this paint mixture of Example 1 has an active ingredient remaining amount of 25% after volatilization, in order to make the film thickness about 6 μm as described above, the paint mixture is 1 m ² of the floor surface. 25 cc was applied per hit. This application was performed using a mop as in the case of the lower layer 2.

In this way, the coating liquid mixture was applied to the entire surface on the lower layer 2 of the target floor surface 1, and the coating of the upper layer 3 was completed. Thereafter, after about 1 hour and 25 minutes, it was confirmed that the paint on the coated surface was cured and dried. The indoor temperature at this time was 21 ° C.
The curing tapes were quickly removed after the paint was dry to the touch.

Thereafter, regular cleaning was performed once a month.
Periodic cleaning uses (1) mop cleaning with neutral detergent, (2) treatment with a polisher or hand pad for areas with many heel marks, and (3) buffing equipment for areas with low gloss. The process was performed.

  Dust contamination can be cleaned by (1) mop cleaning using a neutral detergent, and areas with a lot of heel marks can be removed by treatment with the polisher in (2). The treatment by is performed using a pad that does not damage the coating film such as a white pad. About the site | part where glossiness fell or cloudiness occurred, glossiness can be recovered | restored by the process by the buffing apparatus of (3).

  With such regular cleaning, the protective film on the floor surface can be maintained in a substantially good state, but the amount of walking was large, and a part where the coating was worn extremely quickly occurred. A coating liquid mixture for the upper layer 3 was prepared, and this was thinly applied to the corresponding part using a iron brush and dried with a dryer. After this, the gloss was adjusted by polishing using a buffing device.

  Thus, the floor protective film of Example 1 was maintained in a beautiful state over a long period of time by repeating the above-described very simple regular cleaning and the above-described partial application of paint.

  After this, if the overall wear increases, after cleaning, prepare the paint mixture for the upper layer 3, apply it to the whole using a mop or the like, and apply a coating film of approximately 6 μm again. Can be formed.

The target floor is a vinyl chloride floor in another room of our office.
Since the floor surface 1 was waxed, it is first peeled off. This wax removal treatment was performed by an existing method. Damage found on the floor was also repaired using existing technology.

Thereafter, a protective film is formed on the target floor surface 1.
In this case as well, naturally, the curing treatment is first performed on the surroundings and on the part where the protective film is not applied.

Thereafter, as the lower layer 2, an elastic paint is applied on the upper surface of the floor. As the elastic paint, in Example 2, a transparent and elastic aqueous two-component polyurethane resin paint having a surface hardness of 1H is adopted, and the ratio of the main agent, the curing agent, and water is 100: 10: 10 (volume ratio). The coating liquid mixture was applied to a thickness of about 25 μm. Since the remaining amount of the active ingredient after volatilization of the coating liquid mixture of Example 2 is 35%, in order to make the film thickness about 25 μm as described above, the coating liquid mixture is used per 1 m ² of the floor surface. 70 cc was applied. This application was performed using a mop.

  In this way, the coating liquid mixture was applied to the entire floor 1 of the object, and the coating of the lower layer 2 was completed. After that, after about 1 hour and 30 minutes, it was confirmed that the paint on the coated surface was cured and dried. The indoor temperature at this time was 21 ° C.

Thereafter, the upper layer 3 is coated on the lower layer 2.
As the elastic paint used for the upper layer 3, in this Example 2, a water-based two-component polyurethane resin paint of the same kind as that used for the lower layer 2 having a surface hardness of 2H is used, and its main agent and curing agent are used. Were mixed at a ratio of 100: 6 (volume ratio), and this paint mixture was applied to a thickness of about 8 μm. This paint mixture of Example 2 has an active ingredient remaining amount of 25% after volatilization. Therefore, in order to make the film thickness about 8 μm as described above, the paint mixture is 1 m ² of the floor surface. 30 cc was applied per hit. This application was performed using a mop as in the case of the lower layer 2.

In this way, the coating liquid mixture was applied to the entire surface on the lower layer 2 of the target floor surface 1, and the coating of the upper layer 3 was completed. After that, after about 1 hour and 30 minutes, it was confirmed that the paint on the coated surface was cured and dried. The indoor temperature at this time was 20 ° C.
Note that the tapes for curing were quickly removed after the paint became dry to the touch.

Thereafter, regular cleaning was performed once a month in exactly the same manner as in Example 1.
The contents of the regular cleaning are exactly the same, (1) Mop cleaning with neutral detergent, (2) Treatment with a lot of heel marks, treatment with a polisher or hand pad, (3) About glossy parts This is a polishing process performed by a buffing apparatus.

Processing other than such periodic cleaning was performed in the same manner as in Example 1.
Thus, the protective film on the floor surface of Example 2 was maintained in a beautiful state over a long period of time by repeating the above-described very simple periodic cleaning and the above-described partial application of the paint.

  If the overall wear increases thereafter, after cleaning, the paint mixture for the upper layer 3 is prepared in the same manner as in Example 1 and applied to the whole using a mop or the like. Then, a coating film of approximately 8 μm can be formed again.

  INDUSTRIAL APPLICABILITY The floor surface protective film and the method of forming the same of the present invention can be effectively used in the fields of floor protective film formation and floor protective film maintenance.

1 Floor surface 2 Lower layer 3 Upper layer t1 Lower layer thickness t2 Upper layer thickness

Claims (4)

A lower layer coated on the floor surface of the object,
And the upper layer was coated on the lower layer, in the configuration,
The lower layer has a pencil hardness of F or higher in order to stably support the upper layer, a surface hardness of 1H or lower in order to absorb the impact received by the upper layer, and 10 μm or higher in order to avoid cracking of the upper layer. And an elastic paint having a thickness of 50 μm or less in order to suppress the application work within two times,
The upper layer has a pencil hardness of 1H or more in order to suppress the generation of scratches and a surface hardness of 2H or less in order to polish the scratches so that the scratches can be eliminated. The depth of the scratches exceeds the thickness of the layer. An elastic coating of the same type as the lower layer having a thickness of 4 μm or more and a thickness of 16 μm or less in order to suppress the coating operation within two times,
Periodically apply the elastic paint for the upper layer to the worn portion of the upper layer, and maintain the gloss by polishing after curing and drying,
A protective film for a floor surface.   The protective film for a floor according to claim 1, wherein an aqueous two-component polyurethane resin paint is employed as the elastic paint. A method for forming a protective film on a floor surface by applying a lower layer on the floor surface, and then applying an upper layer on the lower layer,
The lower layer has a pencil hardness of F or higher in order to stably support the upper layer, a surface hardness of 1H or lower in order to absorb the impact received by the upper layer, and 10 μm or higher in order to avoid cracking of the upper layer. And an elastic paint having a thickness of 50 μm or less in order to suppress the application work within two times,
The upper layer has a pencil hardness of 1H or more in order to suppress the generation of scratches and a surface hardness of 2H or less in order to polish the scratches so that the scratches can be eliminated. The depth of the scratches exceeds the thickness of the layer. An elastic coating of the same type as the lower layer having a thickness of 4 μm or more and a thickness of 16 μm or less in order to suppress the coating operation within two times,
Periodically apply the elastic paint for the upper layer to the worn portion of the upper layer, and maintain the gloss by polishing after curing and drying,
A method for forming a protective film on a floor surface. The method for forming a protective film on a floor surface according to claim 3 , wherein an aqueous two-component polyurethane resin paint is employed as the elastic paint.

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