JP2002054296A - Floor face coating structure and floor face coating method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively improve polishing durability of a floor sheet by arranging a sealing part made of an improved material and formed into an improved shape around the edge of the floor sheet stuck to a floor face. SOLUTION: This floor face coating structure is provided with a floor 1 of a building, the floor sheet 2 stuck to the surface (floor face) of the floor and provided with an outside dimension smaller than that of the floor face, and a sealing part 3 arranged along the edge of the floor sheet and fixed to the edge and the floor face. A material for the sealing part is an epoxy resin or a polyester resin, and the width of the sealing part is uniform substantially in the view vertical to the floor face.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor covering structure formed by bonding a floor sheet so as to cover the floor. The floor sheet used in the floor covering structure is a so-called decorative sheet used for the purpose of decoration and protection of the floor of a building or the like.

[0002]

2. Description of the Related Art In general, finishing floor materials (plastic floors, stone floors, painted floors, wooden floors, etc.) arranged on floors in a building are usually installed on the floors using an adhesive, and the floors in the building are generally installed. Form a floor surface. Also, on such floors,
Decorative sheet (decorative adhesive sheet,
Also called a decorative sheet. ) Has been considered. Decorative sheets are often used for interior purposes, for covering walls and ceilings, and for decorating, and it is an attempt to use this decorative sheet for floor covering.

[0003] As such a decorative sheet, for example,
It has been proposed that a fluoropolymer film is laminated as a protective layer on a base layer via an adhesive to impart stain resistance and abrasion resistance (Japanese Patent Publication No. 64-1).
1752, JP-A-8-118553, etc.).
In the decorative sheet disclosed in JP-A-10-175270, a fluoropolymer layer containing an antistatic agent and an antibacterial agent is used for the protective layer.

[0004] Since such a decorative sheet has a structure in which a thin film having a pattern is laminated on the surface, peeling of the surface portion is liable to occur at the end, that is, at the edge. On the other hand, if the surface of the decorative sheet is damaged by peeling or the like, the decorative function of the decorative sheet is impaired, and it is necessary to prevent this. Therefore, in order to extend the life of the decorative sheet, it is necessary to protect the edge and prevent the surface portion from peeling off.

A common method for protecting the edges of a decorative sheet is to harden the edges of the decorative sheet with an adhesive. This is an attempt to prevent peeling by bonding a film laminated on the surface of the decorative sheet more firmly at the edge of the decorative sheet. For example, after applying a decorative sheet, it is widely practiced to seal the edge with a material containing a resin.

In this specification, the term "sealant" is used to protect the edge of the decorative sheet.
Means the resin material before construction. The sealing material includes a resin solution, a resin composition that is liquid at room temperature, a hot melt resin that is liquefied by heating, and the like. In contrast,
The term "sealing part" means a member formed by applying a sealing material to the edge of the decorative sheet. The seal portion includes a dry resin, a cured resin composition, a hot-melt resin that is once heated and then cooled, and the like.

Conventionally known edge protecting seal materials include (A) a material containing a solvent and a resin,
(B) One containing a two-component curable non-solvent type curable resin is known.

[0008] The solvent-type sealing material (A) has a large decrease in volume after drying, and it is difficult to completely cover the edge and protect it effectively. Further, since the hardness is relatively low, an expected protective effect may not be obtained in some cases. Furthermore, since drying is slow, on-site workability was poor. Therefore, from such a viewpoint, the solvent-free type cured resin (B) has been preferably used.

An edge protection method using a non-solvent type cured sealing material is disclosed in, for example, JP-A-5-318661. In the method disclosed herein, after bonding a floor sheet to a floor surface such as a veranda, a sealing material containing a room-temperature-curable urethane resin having a thixotropic property is applied around an edge portion, and cured to form a seal portion. I was Since urethane resin has a balance between rubber elasticity and toughness,
The wear resistance was relatively good.

Japanese Unexamined Patent Publication No. Hei 8-246463 discloses a line-shaped flooring material having a tapered edge to prevent peeling. However, since the base layer of the floor sheet is usually as thin as less than 1 mm (usually 100 μm or more), it is not possible to process the edge of the base layer (base film) itself into a tapered shape in the same manner as the above-described line floor material. Technically difficult.

[0011] The present inventors have conducted research on forming a floor covering structure by using a normal decorative sheet as a floor sheet, and as a result, have found the following problems in the prior art. did.

[0012] The floor covering structure including a floor sheet is used in a floor of a hotel or a store for the purpose of simple repairs, advertisements, and guidance signs. Increasingly, they are formed by bonding. However, in large supermarkets, convenience stores, etc.
Use a floor polishing device such as a high-speed buffing machine for floor cleaning. This device is used for floor polishing buff (buff pad etc.)
A cleaning tool including a brush and a brush is rotated at a relatively high speed, and the floor and the floor sheet surface on the floor are cleaned by frictional contact between the cleaning tool and the floor.

However, if the edges of the floor sheet are not effectively protected, the durability of the floor covering structure that can withstand the cleaning by the floor polish device, that is,
It has been found that the polishing durability cannot be increased. For example, in some ultra-high-speed polishing apparatuses, the number of rotations of the cleaning tool is 1,000 to 3,000 rotations / minute. When cleaning with such a polish device,
If the edges of the floor sheet are not effectively protected, peeling, tearing, breakage, etc., from the edges (ends) occur. The sealing portion formed by using the above-described ordinary sealing material containing a urethane resin is disadvantageous for enhancing the polishing durability. This is considered to be because ordinary urethane resin was a relatively soft rubber-like elastic body, and was not suitable for enhancing polishing durability.

[0014]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to dispose a seal portion of improved material and shape around the edge of a floor sheet adhered to a floor surface to improve the polishing durability of the floor sheet. Is to increase it effectively.

[0015]

SUMMARY OF THE INVENTION The present invention relates to a building floor,
A floor sheet having an outer dimension smaller than the floor surface adhered to the floor surface (floor surface); and a seal portion disposed along the edge of the floor sheet and fixed to the edge and the floor surface. A floor covering structure, wherein the material of the seal portion is an epoxy resin or a polyester resin, and the width of the seal portion is substantially uniform when viewed from a direction perpendicular to the floor surface. A surface covering structure is provided to solve the above problems.

[0016] The present invention also relates to (i) a step of bonding a floor sheet having an outer dimension smaller than the floor surface to the floor surface; and (ii) being arranged along the edge of the floor sheet, the edge and the floor. Forming a seal portion fixed to the surface, wherein the material of the seal portion is an epoxy resin or a polyester resin, and the width of the seal portion is substantially as viewed from a direction perpendicular to the floor surface. To provide a floor covering method characterized by being uniformly uniform, and to solve the above problems.

[0017]

The floor covering structure of the embodiment of the invention The action present invention, the material of the sealing portion is a cured epoxy resin or a cured polyester resin. These resins are advantageous for effectively improving the polishing durability of the floor sheet. In addition, since the seal portion has a substantially uniform width along the periphery of the edge of the floor sheet, the durability of polishing can be effectively increased in synergy with including the resin as described above. . Therefore, in the floor covering structure including the floor sheet, the edge of the floor sheet is effectively protected, and peeling, tearing, and chipping from the edge can be effectively prevented.

Although it is not clear why the cured epoxy resin and the cured polyester resin exhibit such an effect, a relatively hard seal portion can be formed as compared with a conventional urethane resin. It is thought that it is. In addition, such a seal portion containing a hard resin can effectively enhance the stain resistance. Therefore, the floor covering structure of the present invention is particularly useful for floors such as hotels and shops where traffic frequently occurs.

A preferred embodiment of the floor covering structure of the present invention will be described with reference to FIG.

The floor covering structure (100) is bonded to a floor (1) of a building having a predetermined area and a surface of the floor, that is, a floor surface (11), and an outer dimension smaller than the floor surface (11). And a seal portion (3) arranged around the edge (23) of the floor sheet (2). The floor sheet (2) is usually adhered to the floor surface (11) via an adhesive layer (not shown) fixed to the back surface (22) of the floor sheet.

In the example of FIG. 1, the seal portion (3) is provided at least with the edge (23) of the floor sheet (2) and the floor surface (1).
It is fixed to 1). Further, as shown by the broken line, the sealing material of the sealing portion (3) is
3) You may ride on the floor sheet surface (21) in the vicinity and adhere to it. In this case, the outer periphery of the seal portion (3) (the end located away from the edge of the floor sheet) and the periphery of the edge (outer periphery) of the floor sheet (2) are substantially parallel, and the seal portion (3) is formed. ) And the periphery of the edge of the floor sheet (2) (that is, the substantial width of the seal portion (3)) may be substantially uniform.

The sealing portion (3) is usually formed by applying a sealing material and molding and curing. As described below, the sealing material is a curable resin composition containing an epoxy resin or an unsaturated polyester resin and containing these curing agents in combination.

The seal (3) may have a substantially uniform width (W) along the edge (23) of the floor sheet (2). In order to form the seal portion (3) so as to have such a uniform width (W), it is preferable to manufacture a floor covering structure by effectively using a masking tape as described later. It is.

As shown in FIG. 1, the sectional shape of the seal portion (3) cut along a plane perpendicular to the floor surface has a height from the floor surface toward the edge of the seal portion from the edge of the floor sheet. It is preferable that the taper is formed so as to be smaller. The seal portion (3) may not have such a tapered shape, but preferably has a tapered shape as shown. This is because such a tapered shape is very advantageous for improving the polishing durability of the floor sheet.

The taper inclination is not particularly limited. However, the relationship between the height (H) of the edge (23) of the floor sheet and the height (h) of the edge (30) of the sealing portion is usually 0 ≦ h ≦ 0.9H, preferably 0. 01H ≦ h ≦ 0.
7H.

The floor covering structure of the present invention can be formed, for example, as follows. That is, referring to FIG. 2, (i) first, a floor sheet (2) is bonded to a floor surface (11), and (ii) an edge of the floor sheet (2) is mounted on the floor surface (11). (3) A masking tape (4) thinner than the floor sheet is arranged at a certain interval from (23), and (iii) a floor surface between the edge (23) of the floor sheet (2) and the masking tape (4). (12) A resin composition containing an epoxy resin or a polyester resin is applied thereon, (iv) the resin composition is cured to form a seal portion, and (v) the masking tape (4) is removed.

[0027] Thus, the seal portion (3) having a substantially uniform width (W) along the periphery of the edge (23) of the floor sheet (2) can be easily formed. Further, the tapered shape as described above can be easily applied to the seal portion (3), and the polishing durability can be improved.

As the masking tape, an adhesive tape having a relatively thin substrate and an adhesive layer containing an adhesive can be used. The substrate is usually formed from paper, nonwoven fabric, woven fabric, polymer film and the like. The adhesive contained in the adhesive layer is
Usually, those containing an acrylic, rubber, polyolefin or urethane adhesive polymer are used.

The thickness of the substrate is usually 0.01 to 0.5 m
m, preferably 0.03 to 0.3 mm, and the thickness of the adhesive layer is usually 0.01 to 0.2 mm, preferably 0.02 to 0.3 mm.
0.1 mm, and is preferably selected such that the thickness (h) of the entire masking tape is smaller than the thickness (H) of the floor sheet.

A specific example of such a masking tape is, for example, a masking tape “product number: 2479H” manufactured by 3M Corporation.

The width (W) of the sealing portion (3) is usually 1 to 1
0 mm, preferably 1.5-7 mm, particularly preferably 2-5
mm. If the width (W) is too small, the polishing durability may not be increased. Conversely, if the width (W) is too large, the polishing durability may be increased. The appearance of the coating structure may be impaired.

For applying the sealing material, a usual applicator such as a roller or a spatula can be used. The details of the sealing material will be described below.

Sealing Material The sealing material contains an epoxy resin or an unsaturated polyester resin, and also contains a combination of these curing agents. In general, it is preferable to separately prepare a main resin composed of an epoxy resin or an unsaturated polyester resin and a curing agent and mix them when forming (coating) to form a sealing material. When a main resin curable by radiation such as ultraviolet rays is used, a curing agent is not required.

The sealing material is preferably liquid at room temperature before it is cured, but a hot-melt type which is liquefied by heating can also be used. The viscosity of the liquid sealing material may be within a range that can be applied along the periphery of the floor sheet, and is generally 1,000 to 600,000 cps, preferably 2,000 to 500,000 cps. Instead of a liquefied type, a heat-activated or heat-sensitive film-shaped sealing material that softens when heated can also be used.
Note that the sealing material preferably does not substantially contain a volatile solvent.

The mixing ratio of the main resin and the curing agent is as follows:
It is preferable that the sealing portion, which is appropriately determined according to each chemical equivalent and is made of a cured sealing material, has a predetermined effect (polishing durability, and preferably, contamination resistance).

A preferred sealing material contains an epoxy resin. This is because the seal portion containing the cured epoxy resin has the effect of improving the polishing durability of the floor covering structure, and at the same time, has excellent contamination resistance of the seal portion itself. The seal portion containing the cured epoxy resin has an extremely low property of adsorbing and absorbing dirt components containing fine dust and oil. Therefore, the dirt component can be easily removed only by cleaning the surface of the seal portion by an operation such as polishing. As compared with the epoxy resin, the seal portion including the cured polyester resin has poor stain resistance.

As the epoxy resin, for example, bisphenol A type epoxy resin, bisphenol F type epoxy resin, cresol novolak type epoxy resin, phenol novolak type epoxy resin and the like can be used. The epoxy equivalent of the epoxy resin is usually 100 to 600, preferably 120 to 500. In addition, these epoxy resins can also mix two or more types in order to adjust a viscosity etc.

As the curing agent, polyamines, polybasic acids,
A usual curing agent for an epoxy resin such as a polybasic acid anhydride, a polyhydric phenol, or a polyhydric mercaptan (also referred to as polymercaptan) can be used. Preferably, it is a polyvalent mercaptan curing agent. A sealing material containing an epoxy resin and a polyvalent mercaptan curing agent can effectively improve the stain resistance to a dirt component containing fine dust and oil. It cures quickly at room temperature (about 25 ° C) (typically 4
Within an hour), the dimensional shrinkage is small and the appearance after construction can be kept good.

As such a polyvalent mercaptan curing agent, for example, pentaerythritol tetrathioglycol, polysulfide, trioxane trimethylene mercaptan and the like can be used.

On the other hand, a curing accelerator may be added in addition to the main resin composed of an epoxy resin or an unsaturated polyester resin and a curing agent. For example, benzylmethylamine, 2- (dimethylaminomethyl) phenol, 2,4,6-tris (dimethylaminomethyl) phenol, and the like can be used as a curing accelerator for an epoxy resin.

Further, the sealing material may contain various additives in addition to the above-mentioned curing components (base agent, curing agent and accelerator). Examples of such additives include fillers, coloring pigments, catalysts, glass bubbles, thermoplastic resins, adhesive polymers, tackifying resins, plasticizers, ultraviolet stabilizers, and thermal test agents. When an additive is contained, the ratio of the hardening component in the entire sealing material is usually 40 to 95% by mass.

The above-mentioned sealing material can also be obtained as a commercially available putty or adhesive. For example, specific examples of the epoxy-based putty include a plastic part putty (trade name) manufactured by 3M Co., Ltd., and a (trademark) fleet putty manufactured by Kansai Paint Co., Ltd. Further, as a specific example of the polyester-based putty, (trademark) manufactured by Isamu Paint Co., Ltd.
Easy putty can be mentioned.

Floor Sheets Floor sheets usually comprise a base layer and a protective layer disposed on the surface of the base layer. In addition, an adhesive layer is disposed on the back surface of the base layer, and is adhered to the floor via the adhesive layer. The thickness (H) of the floor sheet is usually 0.1 to
It is 0.7 mm, preferably in the range of 0.2-0.5 mm. If the thickness of the floor sheet is too large, the polishing durability may be reduced. On the other hand, if it is too thin, the work of bonding the floor sheet to the floor surface may be difficult.

The protective layer preferably contains hard beads. Thereby, the hard beads are advantageous for enhancing polishing durability. The protective layer may have a multilayer structure of two or more layers. In such a case, the hard beads are preferably contained in the outermost layer of the protective layer. Further, in order to enhance polishing durability, it is preferable to include a hardened resin (hardened resin) in addition to the hard beads.
The content of the hard beads is preferably from 100 to 450 parts by mass, particularly preferably from 110 to 400 parts by mass, based on 100 parts by mass of the cured resin (nonvolatile content).

When the base layer has a decorative layer (such as a printed layer), it is preferable to make the protective layer sufficiently transparent so that the decorative layer can be seen well. In such a case, the hard beads are preferably transparent beads such as inorganic oxide beads, glass beads, ceramic beads, and glass-ceramic beads. From such a viewpoint, it is preferable that the beads have high transparency and the diameter of the beads is as large as possible. The diameter of the beads is usually 5 to 100 μm, preferably 1 to 100 μm.
0 to 50 μm. The diameter of a bead can be usually measured using an image processing device using an optical microscope.

The Vickers hardness of the hard beads is preferably 500 kg / mm ² . If the hardness is less than 500 kg / mm ² , polishing durability may be reduced. Here, the “Vickers hardness” is obtained by mixing about 10 to 20 hard beads having a particle diameter of about 1 mm and 10 g of an epoxy resin and hardening the mixture, and forming a cylindrical sample having a diameter of about 3 cm and a height of about 1 cm. It is a value measured using a microhardness tester on the bead surface formed, polished and exposed. The measurement load at the time of measurement was 300 g, and the load time was 15 seconds.

The hard beads are preferably inorganic oxide beads. This is because the inorganic oxide beads have a high binding action (affinity) with the resin of the protective layer and can realize particularly high wear resistance and polishing durability. As such inorganic oxide beads, those containing alumina, silica, titania, zirconia and the like are suitable. Particularly preferred are alumina-containing beads. The refractive index of the hard beads is preferably substantially the same as the refractive index of the curable resin in order to increase the transparency of the surface layer. Therefore, the refractive index of the hard beads is preferably in the range of 1.3 to 1.9.

The curable resin is preferably a cured resin having excellent transparency and abrasion resistance after curing. The light transmittance of the cured resin (cured curable resin) is usually 70% or more, preferably 80% or more, and particularly preferably 90% or more. For example, urethane resin, acrylic resin, polyester resin, silicone resin, and epoxy resin.

When the base layer has a decorative layer, the light transmittance of the protective layer is usually 60% or more, preferably 70% or more. It is particularly preferably at least 80%. The “light transmittance” in the present specification refers to JIS K 7105
It is a light transmittance measured by a method according to the “light transmittance measurement method”.

For the floor sheet as described above, for example, a support comprising a base layer and a protective layer fixed on the surface of the base layer is prepared, and the back surface of the support (ie, the base layer) On the back side of the device). The adhesive layer can be formed from a pressure-sensitive adhesive, a heat-sensitive adhesive, or a hot-melt adhesive as in the case of a normal floor sheet. It is preferable to use a removable adhesive as the adhesive. This is because it can be easily peeled off during re-construction. In addition, on the adhesive surface of the adhesive layer, transfer from a release paper (liner) having fine irregularities on the surface to form fine irregularities, control the adhesive force, and improve the air bubble removal property when pasting You can also. The thickness of the adhesive layer is usually 10 to 200 μm, preferably 15 to 1 μm.
00 μm.

As the protective layer, a layer consisting of only a surface layer may be used. Preferably, (a) a surface layer containing a surface modifier, a cured resin, and hard beads dispersed in the cured resin; (B) It preferably comprises a primer layer arranged between the surface layer and the base layer. As the base layer to which the protective layer is fixed, a resin layer is usually used. However, the base layer can be fixed to such a base layer with a high adhesive force (adhesive force), and the durability and abrasion resistance of the floor sheet can be improved. This is because it is possible to increase the ratio.

The protective layer as described above is preferably prepared as the following protective film, and laminated with a separately prepared base layer to form a floor sheet. That is, in a floor sheet protective film used as a floor sheet protective layer, (a) a surface layer containing a surface modifier, a cured resin, and hard beads dispersed in the cured resin; )
A protective film comprising a primer layer disposed between the surface layer and the base layer and fixing the protective film to the base layer. Thereby, it can be fixed to the base layer as described above with a high fixing force, and the production of the floor sheet with the protective layer becomes easy.

The thickness of the surface layer in the above protective film is as follows:
Although not limited as long as the effects of the present invention are not impaired, usually 1
It is 0 to 200 μm, preferably 20 to 150 μm. On the other hand, the thickness of the primer layer is usually 10 to 150 μm, preferably 20 to 100 μm.

The surface layer preferably contains, in addition to the above essential components such as a curable resin, curing components such as a surface modifier, a curing agent, a crosslinking agent, a curing accelerator, a polymerization initiator, and a catalyst. In addition, other additives such as a surfactant, a filler, a flame retardant, an ultraviolet absorber, an oxidation stabilizer, a tackifier resin, a colorant, and an antibacterial agent may be included.

For example, a plurality of fine irregularities derived from hard beads may be formed on the surface of the surface layer.
In such a case, when dust or the like adheres to the surface, the contact area between the dust and the surface layer becomes relatively large as compared with the case where dust adheres to a smooth surface. In such a case, it is preferable to modify the surface of the surface layer to reduce the surface tension in order to easily wipe off dirt such as dust without unnecessary and strong polishing. In order to reduce the surface tension, it is preferable to use a surface modifier. The surface modifier is usually a silicone-based or fluorine-based surface modifier.

The surface layer of the protective layer forms a slurry containing essential components such as hard beads and a curable resin, for example.
The slurry can be formed by applying and solidifying the slurry.
When the components of the slurry are mixed, if the non-volatile content of the binder solution is adjusted in advance to the range of 20 to 40% by mass, a slurry having good application characteristics can be obtained. Since the slurry thus obtained contains beads, it is preferable to apply the slurry using a notch bar, a round bar, or the like.

The primer layer is a layer for increasing the adhesiveness between the base layer and the protective layer, and is usually a thermal adhesive layer containing a highly transparent thermoplastic resin. The light transmittance of the thermoplastic resin is usually 70% or more, preferably 80% or more,
Particularly preferably, it is 90% or more. As the thermoplastic resin, a vinyl chloride resin (including a copolymer of vinyl chloride and another vinyl monomer), a urethane resin, an acrylic resin, a polyester resin, a silicone resin, and the like can be used. The primer layer can be formed by applying a coating solution containing a primer layer resin into a coating film using ordinary coating means.

The protective layer (protective film) having a multilayer structure as described above can be easily formed by, for example, disposing a primer layer on a temporary base material (such as a liner) and disposing a surface layer on the primer layer. Can be manufactured.

The base layer is necessary for maintaining good mechanical strength of the entire floor sheet. In addition, when giving a decorative appearance to the sheet surface, it also functions as a layer for supporting a printing layer. The printing layer can color the base layer,
This is a layer for providing images such as characters and designs on the surface to provide decorativeness. The printing layer is (1) disposed on the outermost surface of the base layer, (2) disposed inside the base layer, or disposed on the rearmost surface (side in contact with the adhesive layer) of the base layer.

The base layer can be formed from a material used as a base material of an ordinary floor sheet. For example, paper, a metal film, a resin film and the like can be used. As the resin, a vinyl chloride resin (including a copolymer of vinyl chloride and another vinyl monomer), a polyolefin resin, a urethane resin, an acrylic resin, a polyester resin, a silicone resin, and the like can be used. As the metal film, a metal foil such as an aluminum foil and a copper foil can be used.
When a metal foil is used as the base material, the metal foil can be adhered with good satisfaction along the tile path. The thickness of the base layer is usually 10 to 200 μm, preferably 15 to 200 μm.
150 μm. Here, when the base layer includes a printing layer, the thickness of the base layer means the total thickness of the printing layer and the base layer.

The printing layer can be formed in the same manner as the printing layer of the conventional decorative sheet. For example, using printing ink,
It can be formed by means such as screen printing, gravure printing, and thermal transfer printing. The thickness of the printing layer can be determined in the same manner as in the case of the printing layer in the conventional decorative sheet. Further, a metallic layer having a metallic appearance and including a metal vapor-deposited layer may be used in place of the printing layer. Further, a combination of such a metallic layer and a printing layer formed thereon can be used as a decorative layer.

The floor sheet as described above can be obtained as a commercial product. For example, as a specific example, 3M
Co., Ltd. floor sheet “floor (trademark) Dynock Film”, “(trademark) Floorminder”, Lintec Co., Ltd. print media “Visual Marking (trademark) LAg SYSTEM (Rug System) ) ").

[0063]

EXAMPLE 1 First, as shown in FIG. 3, a plastic floor tile (product name: P-tile) manufactured by Tajima Corp. The floor sheet (2) "Dynoc film for floor (trade name) D / N21; thickness: 0.4 mm" was adhered. The planar shape of the floor sheet was a square having a side of 150 mm. Further, this floor sheet included a protective layer containing glass beads and a cured resin.

An epoxy-based putty containing an epoxy resin, a polyvalent mercaptan curing agent and a curing accelerator was used as a sealing material around the edge of the floor sheet, and a coating width of 5 m was used.
m was formed, and a floor covering structure of this example having a structure as shown in FIG. 1 was produced. The epoxy-based putty used here was a plastic part putty (product number) 8108 (product name) manufactured by 3M Corporation. This putty was a two-pack type curable putty composed of liquid A and liquid B.

The operation of applying the sealing material was performed by using a masking tape as described above so that the width of the sealing portion was uniform and the sealing material had a tapered shape. This masking tape was a masking tape “product number: 2479H” manufactured by 3M Corporation, and the thickness of the tape was 0.09 mm. Details of the materials used are shown in Table 1.

Four hours after the application of the putty, it was confirmed that the putty had already been sufficiently cured. afterwards,
As shown in FIG. 3, a floor pad (5) (3)
3kg of speed burnishing pad manufactured by M Corporation
At a speed of 15 while applying 2,000 rotations per minute.
It was passed at 0 mm / sec to evaluate polishing durability. As a result of the evaluation, no damage to the edge was observed even after the high-speed polisher passed 100 times, and it was confirmed that the floor covering structure of this example had excellent polishing durability.

Further, according to JIS A
Evaluation was made using a contamination recovery rate test based on 5709-1979. This test method will be briefly described. First, a substantially square coating film having a thickness of 5 mm and a plane size of 3 cm × 3 cm was formed on the same floor tile surface as the above by using the sealing material used in this example. After the surface of the coating film of this subject was washed with a cloth soaked with 5% strength soapy water, the initial diffuse reflectance Y0 was measured. Next, 1 g of the dirt component described below was adhered to the subject by rubbing and allowed to stand for 30 minutes. After the dirt component was sufficiently wiped off with a dry cloth, the diffuse reflectance Y1 after the recovery from the contamination was measured. It was measured. The stain component was formed by mixing white petrolatum (according to the Japanese Pharmacopoeia) and carbon black at a mass ratio of 10: 1.

The percentage (Y = Y1 / Y0 × 100) of the two diffuse reflectances measured as described above was calculated, and the calculated value (Y) was used as the contamination recovery rate. The contamination recovery rate evaluated in this manner was 98%, and it was confirmed that the floor covering structure of this example had extremely excellent stain resistance of the seal portion.

Examples 2 to 5 The coating width of the sealing material was changed from 5 mm to 1 mm (Example 2), 2 mm (Example 3), 3 mm (Example 4) and 7 mm.
mm (Example 5), except that
In the same manner as in the above, floor covering structures of the respective examples were produced.

The polishing durability of each floor covering structure was evaluated in the same manner as in Example 1. In all the examples, edge damage was observed even after passing through the high-speed polisher 100 times. It was confirmed that the polishing durability was excellent. In addition, since the same sealing material as in Example 1 is used, it can be said that the contamination resistance of the seal portion is excellent in all Examples.

Example 6 The floor covering structure of this example was produced in the same manner as in Example 1 except that the sealing material was changed to a polyester-based putty, and Raku sharpening putty manufactured by Isamu Paint Co., Ltd. did.

When the polishing durability of the floor covering structure of this example was evaluated in the same manner as in Example 1, no edge damage was observed even after passing 100 times of the high-speed polisher. It was confirmed that it was excellent. When the stain resistance was evaluated in the same manner as in Example 1, the stain recovery rate was 41%.

Example 7 A floor covering structure of this example was produced in the same manner as in Example 1 except that the sealing material was changed to a polyester-based putty, HiSoft (trademark) manufactured by 3M Co., Ltd.

When the polishing durability of the floor covering structure of this example was evaluated in the same manner as in Example 1, no edge damage was observed even after passing through the high-speed polisher 100 times. It was confirmed that it was excellent. When the stain resistance was evaluated in the same manner as in Example 1, the stain recovery rate was 50%.

Example 8 A floor covering structure of this example was produced in the same manner as in Example 1 except that the sealing material was changed to an epoxy-based putty, and Fleet Putty (trademark) manufactured by Kansai Paint Co., Ltd.

When the polishing durability of the floor covering structure of this example was evaluated in the same manner as in Example 1, no damage to the edge was observed even after passing through the high-speed polisher 100 times. It was confirmed that it was excellent.

Comparative Example 1 The floor covering structure of this example was the same as in Example 1 except that the sealing material was changed to a solvent-containing acrylic sealing material (manufactured by 3M Co., Ltd., product number: EC-1103). Was prepared.

When the polishing durability of the floor covering structure of this example was evaluated in the same manner as in Example 1, damage to the edge was observed after 10 passes of the high-speed polisher.

Comparative Example 2 A sealant containing a solvent-containing urethane-based sealant (3M Co., Ltd.)
Product name: New urethane sealer, Product number: 854
Except having changed to 0), the floor covering structure of this example was produced in the same manner as in Example 1.

When the polishing durability of the floor covering structure of this example was evaluated in the same manner as in Example 1, damage to the edge was observed after 10 passes of the high-speed polisher.

Comparative Example 3 A floor covering structure of this example was produced in the same manner as in Example 1 except that no sealing material was used.

The polishing durability of the floor covering structure of this example was evaluated in the same manner as in Example 1. As a result, damage to the edge was observed only after passing through the high-speed polisher once.

[0083]

According to the present invention, when the floor covering structure is polished with a floor polish device, the durability (polishing durability) of the portion to which the floor sheet is adhered (floor sheet portion) is improved. Peeling or breakage of the edge (end) of the floor sheet can be effectively prevented.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an example of a floor covering structure of the present invention.

FIG. 2 is a cross-sectional view showing one step of the floor surface coating method of the present invention.

FIG. 3 is a schematic plan view showing an example of a polishing durability test of the floor covering structure of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Floor, 2 ... Floor sheet, 3 ... Seal part, 23 ... Edge of floor sheet, 30 ... Edge of seal part.

Claims (5)

[Claims] 1. A floor of a building, a floor sheet having an outer dimension smaller than the floor surface adhered to a surface (floor surface) of the floor, and arranged along an edge of the floor sheet, the edge and the floor. In a floor covering structure having a seal portion fixed to a surface, a material of the seal portion is an epoxy resin or a polyester resin, and a width of the seal portion is substantially viewed from a direction perpendicular to the floor surface. A floor covering structure characterized by being uniform. 2. A sectional shape obtained by cutting the seal portion along a plane perpendicular to the floor surface, such that a taper is formed from the edge of the floor sheet to the edge of the seal portion so that the height from the floor surface decreases. The floor covering structure according to claim 1, wherein: 3. The floor covering structure according to claim 1, wherein said seal portion is formed from a resin composition containing an epoxy resin and a polyvalent mercaptan curing agent. 4. A step of: (i) bonding a floor sheet having an outer dimension smaller than the floor to the floor; and (ii) being arranged along an edge of the floor sheet and being fixed to the edge and the floor. Forming a sealed portion, wherein the material of the sealed portion is an epoxy resin or a polyester resin, and the width of the sealed portion is substantially uniform when viewed from a direction perpendicular to the floor surface. A floor covering method, characterized in that: 5. A step of: (i) adhering a floor sheet having an outer dimension smaller than the floor surface to the floor surface; (ii) leaving a fixed distance from an edge of the floor sheet on the floor surface, (Iii) a step of disposing a thin masking tape; (iii) a step of applying a resin composition containing an epoxy resin or a polyester resin onto a floor surface between the edge of the floor sheet and the masking tape; (iv) the resin composition A step of curing to form a seal portion; and (v) a step of removing the masking tape.