JP2022039572A - Bathroom wash place floor - Google Patents

Abstract

To provide a bathroom wash place floor having improved waterproofness in at least one side surface of a cushion layer and at least one side surface of a base material layer.SOLUTION: A bathroom wash place floor includes a base material layer 21, a cushion layer 22 provided above the base material layer and in contact with the base material layer, and a surface layer 23 provided above the cushion layer and forming a surface of the bathroom wash place floor. The base material layer is an aggregation of first foam beads made from a thermoplastic resin. The cushion layer is an aggregation of second foam beads made from a thermoplastic resin. At least one side surface of the base material layer includes a first dense layer. At least one side surface of the cushion layer includes a second dense layer.SELECTED DRAWING: Figure 6

Description

Aspects of the present invention generally relate to bathroom washroom floors.

It is known that a bathroom washing floor has a two-layer structure in which a cushion layer is provided on a base material layer. For example, Patent Document 1 proposes a bathroom washroom floor in which a polyurethane cushion layer is provided on a foamed resin base material layer. A base layer made of foamed resin and a cushion layer made of polyurethane are prepared, respectively, and laminated by a joining means such as an adhesive.

Japanese Unexamined Patent Publication No. 2016-65391

Generally, a silicone seal is provided at the boundary between the bathroom washroom floor and the wall for waterproofing. If the silicone runs out, water will seep into the end face of the washroom floor. When the washing floor has a foamed resin layer, water infiltrates into the inside of the washing floor through foam holes and the interface between the foamed resin layer and other layers, and the layers are peeled off and the odor due to residual water. Can cause. Therefore, even if the silicone provided at the boundary between the washing place floor and the wall is cut, it is required that water does not enter the inside of the washing place floor.

The present invention has been made based on the recognition of such a problem, and an object of the present invention is to provide a bathroom washroom floor capable of improving waterproofness on at least one side surface of a cushion layer and at least one side surface of a base material layer. ..

The first invention is a surface layer provided on the base material layer, a cushion layer provided on the base material layer and in contact with the base material layer, and a surface layer provided on the cushion layer and forming the surface of the bathroom washing floor. The base material layer is an aggregate of first foamed bead particles made of thermoplastic resin, and the cushion layer is an aggregate of second foamed bead particles made of thermoplastic resin. A bathroom washroom floor, characterized in that at least one side surface of the material layer comprises a first dense layer and at least one side surface of the cushion layer comprises a second dense layer.

According to this bathroom washroom floor, even if the silicone provided at the boundary between the washroom floor and the wall is cut and water infiltrates from the side surface of the cushion layer or the side surface of the base material layer, the cushion is cushioned by the second dense layer. It is possible to prevent water from entering the inside of the layer, and it is possible to prevent water from entering the inside of the base material layer by the first dense layer. As a result, it is possible to suppress the peeling between the base material layer and the cushion layer and the odor due to the residual water inside the base material layer and the cushion layer.

The second invention is a bathroom washroom floor, characterized in that, in the first invention, the first dense layer and the second dense layer are continuously formed.

According to this bathroom washing floor, it is possible to surely prevent water from entering the inside of the base material layer and the cushion layer from between the first dense layer and the second dense layer, and the base material layer and the cushion layer are separated from each other. Can be suppressed.

According to a third aspect of the invention, in the first or second invention, the first foamed bead particles include the first foamed bead particles, and the first foamed bead particles of the first dense layer are said to be the base material layer. The second foamed bead particles are in close contact with the first foamed bead particles inside the first dense layer, the second foamed bead particles include the second foamed bead particles, and the second foamed bead particles of the second dense layer are the cushion layer. It is a bathroom washing place floor characterized in that it is in close contact with the second foamed bead particles inside the second dense layer in the above.

According to this bathroom washroom floor, in each layer of the base material layer and the cushion layer, the adhesion between the first dense layer and the second dense layer and the inner portion thereof is high, and each layer of the base material layer and the cushion layer. It is possible to prevent water from entering the inside of the room more reliably.

A fourth aspect of the invention is characterized in that, in any one of the first to third aspects, the bottom surface of the base material layer contains the first dense layer, and the upper surface of the cushion layer includes the second dense layer. , Bathroom washroom floor.

According to this bathroom washing floor, it is possible to prevent water from entering the inside of each layer from the upper surface of the cushion layer and the bottom surface of the base material layer.

In the fifth aspect of the invention, in any one of the first to fourth aspects, the base material layer has an enclosure provided so as to surround the periphery of the cushion layer, and the enclosure portion of the base material layer is provided. The upper surface of the bathroom is a bathroom washing floor, which comprises the first dense layer.

According to this bathroom washroom floor, even if water tries to infiltrate between the cushion layer and the surface layer and between the enclosure and the surface layer of the base material layer, water infiltrates into the cushion layer and the base material layer. Can be prevented. Therefore, it is possible to prevent water from entering the inside of each layer of the cushion layer and the base material layer.

According to the aspect of the present invention, it is possible to provide a bathroom washroom floor capable of improving waterproofness on at least one side surface of the cushion layer and at least one side surface of the base material layer.

It is a perspective view schematically showing the bathroom unit provided with the bathroom washroom floor which concerns on embodiment. It is an exploded perspective view schematically showing the bathroom washroom floor which concerns on embodiment. It is sectional drawing which shows the part of the bathroom washing place floor which concerns on embodiment schematically. It is sectional drawing which shows typically the 1st foamed bead particle and the 2nd foamed bead particle which concerns on embodiment. It is sectional drawing which shows typically how to obtain the thickness of the base material layer and the thickness of the cushion layer of the bathroom washing place floor which concerns on embodiment. It is sectional drawing which shows typically the part including the end face of the base material layer and the end face of a cushion layer of the bathroom washroom floor which concerns on embodiment. It is sectional drawing which shows typically the part which was provided so that a part of the base material layer surrounds the cushion layer in the bathroom washing place floor which concerns on embodiment. 8 (a) to 8 (d) are explanatory views schematically showing a method for manufacturing a base material layer and a cushion layer of a bathroom washroom floor according to an embodiment.

Hereinafter, embodiments will be described with reference to the drawings. In each drawing, similar components are designated by the same reference numerals and detailed description thereof will be omitted as appropriate.
FIG. 1 is a perspective view schematically showing a bathroom unit provided with a bathroom washing floor according to the embodiment.
As shown in FIG. 1, the bathroom unit 2 includes a bathroom washroom floor 10, a bathtub 60, and wall panels 71a to 71f.

Support legs 61 are provided near the four corners on the back surface of the bottom of the bathtub 60, and the bathtub 60 is installed on the bathroom installation surface (for example, the floor of a building) 100 via the support legs 61. A bolt portion is provided on the tip end side (lower end side) of the support leg 61, and the height of the support leg 61 can be adjusted by rotating the bolt portion.

A bathroom washroom floor 10 is installed at the bottom of the space next to the bathtub 60. The surface 10a of the bathroom washing floor 10 has a waterproof property that prevents water from leaking to the outside of the bathroom. In the specification of the present application, the term "water" includes not only cold water but also heated hot water.

On the back side (lower side) of the bathroom washing place floor 10, a drainage pipe 62 is provided near the boundary with the bathtub 60. In the bathroom washing place floor 10, for example, a drainage port 10h communicating with the drainage pipe 62 is formed in the vicinity of the boundary portion with the bathtub 60. The drainage port 10h may be closed with, for example, a removable lid. The portion where the drainage port 10h is provided is recessed downward, and the surface 10a of the bathroom washing place floor 10 is provided with a drainage gradient inclined downward toward the drainage port 10h. Further, a drainage port (not shown) provided at the bottom of the bathtub 60 is also connected to the drainage pipe 62.

As shown by the two-dot chain line in FIG. 1, wall panels 71a to 71c are installed on the rim of the bathtub 60. Further, wall panels 71d to 71f are installed on the peripheral edge of the bathroom washing floor 10. Further, a door is attached to the wall panel 71f via a door attachment frame (not shown).

At the boundary between the bathtub 60 and the bathroom washroom floor 10, a bath apron 67 that covers the side surface of the bathtub 60 on the bathroom washroom floor 10 side is provided. Depending on the structure of the bathtub 60, the bath apron 67 may not be provided.

Further, a small panel 65b is provided between one end side of the bath apron 67 in the longitudinal direction and the wall panel 71d. Further, a small panel 65a is provided between the other end side of the bus apron 67 in the longitudinal direction and the wall panel 71f. The small panels 65a and 65b are provided as needed and can be omitted.

FIG. 2 is an exploded perspective view schematically showing the bathroom washing floor according to the embodiment.
As shown in FIG. 2, the bathroom washing floor 10 includes a floor body 20 and a frame body 30.

The frame body 30 is provided under the floor body 20 and supports the floor body 20 from below. The frame body 30 has an outer frame 31, a grid portion 32, and support legs 33. The outer frame 31, the grid portion 32, and the support legs 33 are each made of metal.

The outer frame 31 forms the outer shape (outline) of the frame body 30. The grid portion 32 partitions the inside of the outer frame 31 in a grid pattern. The lattice portion 32 supports, for example, a portion inside the outer frame 31 of the floor body 20. The support legs 33 are provided on the lower surface of the lattice portion 32. The support legs 33 extend downward (installation surface side) from the lower surface of the lattice portion 32. The support legs 33 may be provided on the lower surface of the outer frame 31. In this example, four support legs 33 are provided, but the number of support legs 33 may be five or more.

The frame body 30 is installed on the installation surface 100 via each support leg 33. A bolt portion is provided on the tip end side (lower end side) of each support leg 33, and the height of each support leg 33 can be adjusted by rotating the bolt portion. By adjusting the height of each support leg 33, the installation height and levelness of the floor body 20 supported on the frame body 30 are adjusted.

The frame body 30 has an opening 30h provided at a position corresponding to the drainage port 10h. The opening 30h is formed in a plate provided in the lattice portion 32, and penetrates the plate in the vertical direction.

The floor body 20 is placed on the frame body 30 and supported by the frame body 30. The floor body 20 has a base material layer 21, a cushion layer 22, and a surface layer 23. Each layer is provided in the order of the base material layer 21, the cushion layer 22, and the surface layer 23 from the lower side.

The base material layer 21 is located at the bottom of the floor body 20 and supports the cushion layer 22 and the surface layer 23. The base material layer 21 is formed in a shallow-bottomed vessel shape (bread shape) with a peripheral portion bent upward.

The base material layer 21 has an opening 21h provided at a position corresponding to the drainage port 10h. The opening 21h is provided in a concave shape that is recessed downward. Further, on the upper surface of the base material layer 21, a drainage gradient inclined downward toward the opening 21h (drainage port 10h) is formed.

By providing the base material layer 21, the strength of the bathroom washing floor 10 (floor body 20) can be increased. The base material layer 21 will be described later.

The cushion layer 22 is provided above the base material layer 21 and below the surface layer 23. That is, the cushion layer 22 is provided between the base material layer 21 and the surface layer 23. The cushion layer 22 is provided inside the peripheral portion of the base material layer 21.

The cushion layer 22 has an opening 22h provided at a position corresponding to the drainage port 10h. The opening 22h penetrates the cushion layer 22 in the vertical direction and communicates with the opening 21h of the base material layer 21. Further, a drainage gradient reflecting the drainage gradient of the upper surface of the base material layer 21 is formed on the upper surface of the cushion layer 22. That is, a drainage gradient inclined downward toward the opening 22h (drainage port 10h) is formed on the upper surface of the cushion layer 22.

By providing the cushion layer 22, it is possible to give the user a soft feeling of use (treading comfort) on the floor surface. By changing the hardness (softness) of the cushion layer 22, the specifications of the hardness (softness) of the floor surface can be changed. The cushion layer 22 will be described later.

The surface layer 23 is provided on the cushion layer 22. In other words, the surface layer 23 is provided on the base material layer 21 via the cushion layer 22. The surface layer 23 covers the base material layer 21 and the cushion layer 22 and forms the surface 10a of the bathroom washing floor 10 (floor body 20). The surface layer 23 imparts appearance design and waterproofness to the surface 10a of the bathroom washing floor 10.

The surface layer 23 has an opening 23h provided at a position corresponding to the drainage port 10h. The opening 23h penetrates the surface layer 23 in the vertical direction and communicates with the opening 22h of the cushion layer 22 and the opening 21h of the base material layer 21. Further, a drainage gradient reflecting the drainage gradient of the upper surface of the cushion layer 22 (drainage gradient of the upper surface of the base material layer 21) is formed on the upper surface of the surface layer 23. That is, a drainage gradient inclined downward toward the opening 23h (drainage port 10h) is formed on the upper surface of the surface layer 23. As a result, a drainage gradient inclined downward toward the drainage port 10h is formed on the surface 10a of the bathroom washing place floor 10 (floor body 20), and water flowing on the upper surface of the surface layer 23 can be discharged from the drainage port 10h. can.

For the surface layer 23, for example, a soft resin sheet material having waterproofness and flexibility is used. The upper surface (surface) of the surface layer 23 may be processed to provide irregularities or patterns in order to improve the design and drainage of the surface 10a of the bathroom washing floor 10.

The frame body 30, the base material layer 21, the cushion layer 22, and the surface layer 23 are overlapped so that the openings 30h, 21h, 22h, and 23h, respectively, are aligned with each other. A drainage pit is provided inside each of the openings 30h, 21h, 22h, and 23h. The drainage pit is made of resin and has impermeable property. A drainage port 10h is provided inside the drainage pit. The drainage port 10h is connected to the drainage pipe 62. As a result, the water flowing on the surface 10a of the bathroom washing place floor 10 (floor body 20) is drained to the drain pipe 62 through the drain pit or the like.

FIG. 3 is a cross-sectional view schematically showing a part of the bathroom washing floor according to the embodiment.
As shown in FIG. 3, the cushion layer 22 is preferably in contact with the base material layer 21. That is, it is preferable that the base material layer 21 and the cushion layer 22 are directly joined. It is preferable that the upper surface 21a of the base material layer 21 and the lower surface 22b of the cushion layer 22 form an interface 50 between the base material layer 21 and the cushion layer 22. It is preferable that the base material layer 21 and the cushion layer 22 are joined in a non-linear manner in a cross section. That is, it is preferable that the interface 50 between the base material layer 21 and the cushion layer 22 has irregularities. The unevenness referred to here is a displacement in the stacking direction (vertical direction). The base material layer 21 and the cushion layer 22 may be indirectly joined via an adhesive layer or the like. At this time, it is preferable that the adhesive layer has a sealing property for waterproofing.

The surface layer 23 is preferably adhered onto the cushion layer 22 via the adhesive layer 24. That is, it is preferable that the surface layer 23 is not in contact with the cushion layer 22. In other words, it is preferable that the surface layer 23 and the cushion layer 22 are indirectly joined via the adhesive layer 24. The adhesive layer 24 is provided as needed and can be omitted. That is, the surface layer 23 and the cushion layer 22 may be directly bonded to each other without the adhesive layer 24. When the surface layer 23 and the cushion layer 22 are directly joined, they can be joined by heat fusion or the like.

The adhesive layer 24 is a layer for adhering the surface layer 23 and the cushion layer 22. The surface layer 23 and the cushion layer 22 are preferably bonded using an adhesive. Adhesives include synthetic resin adhesives, rubber adhesives, emulsion adhesives, water-based adhesives, reactive acrylic adhesives, UV curable adhesives, hot melt adhesives, double-sided tapes, and film adhesives. , A sealing material can be used. It is preferable to use a hot melt adhesive or double-sided tape.

It is preferable that the surface layer 23 and the adhesive layer 24 are joined in a straight line in a cross section. Further, it is preferable that the adhesive layer 24 and the cushion layer 22 are joined in a straight line in a cross section. In this way, the surface layer 23 and the adhesive layer 24 are joined linearly in the cross section, and the adhesive layer 24 and the cushion layer 22 are joined linearly in the cross section, so that the surface layer 23 and the adhesive layer 24 are joined together. The bonding strength (adhesiveness) and the bonding strength (adhesiveness) between the adhesive layer 24 and the cushion layer 22 can be made smaller than the bonding strength (adhesiveness) between the base material layer 21 and the cushion layer 22. Therefore, the surface layer 23 can be easily peeled off from the cushion layer 22.

Hereinafter, the base material layer 21 and the cushion layer 22 will be described in more detail with reference to FIGS. 3 and 4.
FIG. 4 is a cross-sectional view schematically showing the first foamed bead particles and the second foamed bead particles according to the embodiment.

As shown in FIG. 3, the base material layer 21 is an aggregate of the first foamed bead particles 41 made of a thermoplastic resin. That is, the base material layer 21 is a bead foaming layer made of a thermoplastic resin, and is preferably a layer made of foamed bead particles obtained by foaming a plurality of raw material beads made of a thermoplastic resin. In the base material layer 21, the first foamed bead particles 41 are preferably bonded by melting each other. The plurality of first foamed bead particles 41 are joined by melting with each other to form an aggregate. By forming the base material layer 21 as an aggregate of the first foamed bead particles 41 made of a thermoplastic resin, the thickness and density of the base material layer 21 can be finely controlled. Therefore, it is possible to give the base material layer 21 the strength and rigidity required for it. Further, a drainage gradient can be easily formed on the upper surface 21a of the base material layer 21.

As shown in FIG. 4, the first foamed bead particles 41 have a dense portion 41a covering the outer periphery and a sparse portion 41b provided inside the dense portion 41a, respectively. The dense portion 41a is a resin film (shell). The sparse portion 41b is a porous body having a cavity. Each hole of the sparse portion 41b is formed by generating (foaming) bubbles inside the resin, and the holes are basically independent of each other. That is, each hole of the sparse portion 41b is not continuous.

The density of the sparse portion 41b is preferably smaller than the density of the dense portion 41a. That is, it is preferable that each of the first foamed bead particles 41 has a structure in which a dense portion 41a having a high density is formed on the outside of a sparse portion 41b having a low density. The density of the sparse portion 41b is smaller than the density of the non-foamed molded product (solid molded product) made of the same material, and is preferably 300 g / L or less, for example. The base material layer 21 is preferably bonded by gathering such first foamed bead particles 41 and melting the dense portions 41a with each other. The density here is a value obtained by JIS K 7222: 2005.

The raw material of the base material layer 21 (first foamed bead particles 41) is selected according to the properties (strength, heat insulating property, durability, etc.) required for the base material layer 21. The first foamed bead particles 41 contain a thermoplastic resin. As the thermoplastic resin, expanded polyolefin (expanded polypropylene, expanded polyethylene), expanded polystyrene, expanded polyurethane, expanded polyamide, expanded polyester and the like can be used. The first expanded bead particles 41 may be expanded bead particles containing two or more of these thermoplastic resins. Further, the base material layer 21 may contain additives such as a colorant, an antibacterial agent, a weather resistant agent, a pigment, a filler, a cross-linking agent, and a foaming agent.

The thickness of the base material layer 21 is preferably 5 mm or more and 40 mm or less, and more preferably 10 mm or more and 30 mm or less. The thickness of the base material layer 21 is the length of the base material layer 21 in the vertical direction. This makes it possible to give the base material layer 21 the strength required for it. The method of determining the thickness of the base material layer 21 will be described later.

The density of the base material layer 21 is preferably 90 g / L or more and 300 g / L or less, and more preferably 100 g / L or more and 200 g / L or less. This makes it possible to give the base material layer 21 the strength and rigidity required for it. The density of the base material layer 21 is a value obtained by cutting out only the base material layer 21 from the bathroom washing floor 10 and using JIS K 7222: 2005.

The compressive stress (at the time of 10% strain) of the base material layer 21 is preferably 0.1 MPa or more and 2.0 MPa or less, and more preferably 0.2 MPa or more and 1.5 MPa or less. This makes it possible to give the base material layer 21 the strength required for it. Here, "compressive stress (at the time of 10% strain)" refers to the compressive stress when compressed by 10% with respect to the thickness. The compressive stress (at the time of 10% strain) of the base material layer 21 is a value obtained by cutting out only the base material layer 21 from the bathroom washing floor 10 and JIS K 6767: 1999.

The bending strength of the base material layer 21 is preferably 0.5 MPa or more and 5 MPa or less, and more preferably 1 MPa or more and 3.5 MPa or less. This makes it possible to give the base material layer 21 the strength required for it. The bending strength of the base material layer 21 is a value obtained by cutting out only the base material layer 21 from the bathroom washing floor 10 and JIS K 7221-1: 2006.

As shown in FIG. 3, the cushion layer 22 is an aggregate of the second foamed bead particles 42 made of a thermoplastic resin. That is, the cushion layer 22 is a bead foam layer made of a thermoplastic resin, and is preferably a layer made of foamed bead particles obtained by foaming a plurality of raw material beads made of a thermoplastic resin. In the cushion layer 22, the second foamed bead particles 42 are preferably bonded by melting each other. It is preferable that the plurality of second foamed bead particles 42 are joined by melting with each other to form an aggregate. By forming the cushion layer 22 as an aggregate of the second foamed bead particles 42 made of a thermoplastic resin, the thickness and density of the cushion layer 22 can be finely controlled. Therefore, the cushion layer 22 can be provided with the cushioning property required for the cushion layer 22.

The base material layer 21 and the cushion layer 22 are both aggregates of foamed bead particles, and are provided so that the base material layer 21 and the cushion layer 22 are in contact with each other so that the base material layer 21 and the cushion layer 22 are in close contact with each other. It can enhance the sex. On the other hand, by forming the base material layer 21 and the cushion layer 22 as aggregates of different foamed bead particles, the base material layer 21 and the cushion layer 22 can have different characteristics. For example, the base material layer 21 can be provided with strength and rigidity, and the cushion layer 22 can be provided with cushioning properties. As a result, the washroom floor of the bathroom can have a good balance between strength and cushioning.

The structure of the second foamed bead particles 42 is the same as the structure of the first foamed bead particles 41. That is, as shown in FIG. 4, it is preferable that each of the second foamed bead particles 42 has a structure in which a dense portion 42a having a high density is formed on the outside of a sparse portion 42b having a low density. The density of the sparse portion 42b is smaller than the density of the non-foamed molded product (solid molded product) made of the same material, and is preferably 300 g / L or less, for example. The cushion layer 22 is preferably bonded by gathering such second foamed bead particles 42 and melting the dense portions 42a with each other.

Further, it is preferable that the adjacent first foamed bead particles 41 and the second foamed bead particles 42 are joined by melting each other. More specifically, it is preferable that the dense portion 41a of the adjacent first foamed bead particles 41 and the dense portion 42a of the second foamed bead particles 42 are joined by melting with each other. The density here is a value obtained by JIS K 7222: 2005.

The raw material of the cushion layer 22 (second foamed bead particles 42) is selected according to the properties required for the cushion layer 22 (cushion property, durability, adhesion to the base material layer 21, etc.). The second foamed bead particles 42 contain a thermoplastic resin. As the thermoplastic resin, foamed polyurethane, foamed polyolefin (expanded polypropylene, foamed polyethylene), foamed thermoplastic elastomer (polyolefin (polypropylene, polyethylene), polyurethane, polystyrene, polyester, polyamide, etc.), foamed (crosslinked) polyethylene, or the like is used. be able to. The second foamed bead particles 42 may be foamed bead particles containing two or more of these thermoplastic resins. Further, the cushion layer 22 may contain additives such as a colorant, an antibacterial agent, a weather resistant agent, a pigment, a filler, a cross-linking agent, and a foaming agent.

The thickness of the cushion layer 22 is preferably 2 mm or more and 8 mm or less, and more preferably 3 mm or more and 6 mm or less. The thickness of the cushion layer 22 is the length of the cushion layer 22 in the vertical direction. As a result, the cushion layer 22 can be provided with the cushioning property required for the cushion layer 22. The thickness of the cushion layer 22 is preferably smaller than the thickness of the base material layer 21. How to obtain the thickness of the cushion layer 22 will be described later.

The density of the cushion layer 22 is preferably 90 g / L or more and 300 g / L or less, and more preferably 100 g / L or more and 200 g / L or less. As a result, the cushion layer 22 can be provided with the cushioning property required for the cushion layer 22. Further, even if the cushion layer 22 is dented (sunk) when the user steps on the washroom floor 10 of the bathroom, it can be easily restored, so that the cushioning property can be maintained for a long period of time. The density of the cushion layer 22 is a value obtained by cutting out only the cushion layer 22 from the bathroom washing floor 10 and JIS K 7222: 2005.

The hardness of the base material layer 21 is preferably higher than the hardness of the cushion layer 22. As an index of hardness, either compressive stress (at 50% strain), Duro A hardness, or Duro CS hardness is used. As an index of hardness, it is preferable to use compressive stress (at 50% strain). That is, it is preferable that the compressive stress (at the time of 50% strain) of the base material layer 21 is higher than the compressive stress (at the time of 50% strain) of the cushion layer 22. Here, "compressive stress (at the time of 50% strain)" refers to the compressive stress when compressed by 50% with respect to the thickness of each layer.

The compressive stress (at the time of 50% strain) of the base material layer 21 is preferably 0.5 MPa or more and 4 MPa or less, and more preferably 0.5 MPa or more and 3 MPa or less. The compressive stress (at the time of 50% strain) of the cushion layer 22 is preferably 0.02 MPa or more and 0.45 MPa or less, and more preferably 0.1 MPa or more and 0.4 MPa or less.

Compressive stress (at 50% strain) is measured by performing a compression test in accordance with JIS K 6767: 1999. More specifically, first, only the layer to be measured (that is, only the base material layer 21 and only the cushion layer 22) is taken out from the bathroom washroom floor 10. At this time, using a band saw or the like, care is taken not to allow other layers to adhere to the surface of each layer or to peel off in the layer, and cut out so that the surface becomes a flat surface. Next, a test piece having a size of 50 mm in length and 50 mm in width is prepared from each of the removed layers. Then, each thickness of this test piece is measured with a dial gauge. Next, the test speed is set to 50% of the thickness per minute (for example, the speed is 5 mm / min when the thickness is 10 mm), and the compression test is performed according to JIS K 6767: 1999. The test force when compressed by 50% with respect to the thickness is converted into the stress per unit area, and the compressive stress (at the time of 50% strain) is obtained.

Further, the Duro A hardness of the base material layer 21 is preferably higher than the Duro A hardness of the cushion layer 22. The Duro A hardness of the base material layer 21 is preferably 55 or more and 99 or less, and more preferably 60 or more and 99 or less. The Duro A hardness of the cushion layer 22 is preferably 5 or more and 50 or less, and more preferably 10 or more and 40 or less.

The Duro A hardness is measured using a hardness tester such as an Asker rubber hardness tester type A (manufactured by Polymer Meter Co., Ltd.) in accordance with JIS K 6253-3: 2012. More specifically, first, only the layer to be measured (that is, only the base material layer 21 and only the cushion layer 22) is taken out from the bathroom washroom floor 10. At this time, each layer is cut out in the same manner as described above, taking care not to deform each layer. Next, a test piece having a size of 100 mm in length and 100 mm in width is prepared from each of the removed layers. Then, this test piece is placed on a flat and hard surface, and the hardness is measured with an Asker rubber hardness tester A type. At this time, the pressure plate of the hardness tester is maintained parallel to the surface of the test piece, and the hardness tester is held so that the push needle is perpendicular to the surface of the test piece so as not to give an impact. In contact with the test piece. Read the value about 3 seconds after contact. The hardness is measured at 5 points on one test piece, and the average value is taken as Duro A hardness.

Further, the Duro CS hardness of the base material layer 21 is preferably higher than the Duro CS hardness of the cushion layer 22. The Duro CS hardness of the base material layer 21 is preferably 70 or more and 99 or less, and more preferably 80 or more and 99 or less. The Duro CS hardness of the cushion layer 22 is preferably 10 or more and 70 or less, and more preferably 20 or more and 60 or less.

The Duro CS hardness can be obtained by the same method as the above-mentioned method for obtaining "Duro A hardness" except that an Asker rubber hardness tester CS type (manufactured by Polymer Meter Co., Ltd.) is used instead of the Asker rubber hardness tester A type. can.

By making the hardness of the base material layer 21 higher than the hardness of the cushion layer 22, that is, by making the hardness of the cushion layer 22 lower than the hardness of the base material layer 21, the base material layer 21 is the bathroom washroom floor 10. It is possible to demonstrate the rigidity required for. Further, the cushion layer 22 can exhibit flexibility and durability. Therefore, it is possible to achieve and maintain the strength and cushioning properties required for the bathroom washroom floor 10 in a well-balanced manner.

As described above, the base material layer 21 is an aggregate of the first foamed bead particles 41 made of a thermoplastic resin, and the cushion layer 22 is an aggregate of the second foamed bead particles 42 made of a thermoplastic resin. By making the hardness higher than the hardness of the cushion layer 22, it is possible to achieve the strength, rigidity, and cushioning properties required for the bathroom washing floor 10 in a well-balanced manner.

As described above, the base material layer 21 is required to have strength and rigidity, and the cushion layer 22 is required to have cushioning properties. That is, the properties required for the base material layer 21 are different from the properties required for the cushion layer 22. Therefore, it is preferable that the thermoplastic resin contained in the first expanded bead particles 41 constituting the base material layer 21 is different from the thermoplastic resin contained in the second expanded bead particles 42 constituting the cushion layer 22. Thereby, the physical characteristics of the base material layer 21 and the physical characteristics of the cushion layer 22 can be made different. That is, for the first foamed bead particles 41, a thermoplastic resin suitable for the base material layer 21 (that is, excellent in strength) was selected, and for the second foamed bead particles 42, the cushion layer 22 was suitable (that is, that is). By selecting a thermoplastic resin (which has excellent cushioning properties), strength, rigidity, and cushioning properties can be achieved in a more balanced manner.

Further, it is preferable that the thermoplastic resin contained in the first foamed bead particles 41 and the thermoplastic resin contained in the second foamed bead particles 42 have similar structures. For example, it is preferable that the thermoplastic resin contained in the first expanded bead particles 41 and the thermoplastic resin contained in the second expanded bead particles 42 are each polyolefin. As described above, by allowing the thermoplastic resin contained in the first foamed bead particles 41 and the thermoplastic resin contained in the second foamed bead particles 42 to have similar structures, the base material layer 21 and the cushion layer 22 are formed. Adhesion with can be improved.

Further, the color of the cushion layer 22 is preferably different from the color of the base material layer 21. More specifically, it is preferable that the base material layer 21 and the cushion layer 22 are different in at least one of hue, saturation, and lightness. It is preferable that the raw material beads of the base material layer 21 and the raw material beads of the cushion layer 22 can be visually or visually distinguished. Thereby, the base material layer 21 and the cushion layer 22 can be easily distinguished. Therefore, even if the raw material beads of each layer are mixed at the time of production, they can be easily identified.

As described above with reference to FIG. 3, it is preferable that the interface 50 between the base material layer 21 and the cushion layer 22 has irregularities. That is, it is preferable that the unevenness of the interface 50 between the base material layer 21 and the cushion layer 22 is formed by the joint surface of the first foamed bead particles 41 and the second foamed bead particles 42.

The base material layer 21 and the cushion layer 22 are joined by forming irregularities so as to bite into each other at the interface 50, and the base material layer 21 and the cushion layer 22 are joined linearly in a cross section as compared with the case where the base material layer 21 and the cushion layer 22 are joined in a linear shape. The contact area between the layer 21 and the cushion layer 22 becomes large, and the bonding strength (adhesion) between the base material layer 21 and the cushion layer 22 can be improved. As a result, peeling between the base material layer 21 and the cushion layer 22 can be suppressed.

The unevenness of the interface 50 between the base material layer 21 and the cushion layer 22 can be specified as follows.
The bathroom washing floor 10 is cut so that the cross section can be observed, and a cross-sectional image of the bathroom washing floor 10 is obtained using an optical microscope, a scanning electron microscope (SEM), or the like. At this time, the cross-sectional image is acquired so as to include the interface 50 between the base material layer 21 and the cushion layer 22. The interface 50 is identified by binarizing the cross-sectional image thus obtained, and the first foamed bead particles 41 contained in the base material layer 21 and the second foamed bead particles 42 contained in the cushion layer 22. It can be confirmed that the unevenness is formed by.

FIG. 5 is a cross-sectional view schematically showing how to obtain the thickness of the base material layer and the thickness of the cushion layer of the bathroom washroom floor according to the embodiment.
When determining the thickness of each layer, first, as shown in FIG. 5, the bathroom washing floor 10 is cut so that the cross section can be observed, and the bathroom washing floor is used with an optical microscope, a scanning electron microscope (SEM), or the like. 10 cross-sectional images are obtained. If the surface of the bathroom floor 10 has a drainage gradient downward with respect to the drainage port 10h, the surface layer 23 is cut so as not to straddle the ridgeline 23a. At this time, the cross-sectional image is acquired so as to include the lower surface 21b (lower end) of the base material layer 21 and the upper surface 22a (upper end) of the cushion layer 22. That is, the cross-sectional image is acquired so as to include the entire base material layer 21 and the cushion layer 22 in the vertical direction. In FIG. 5, the surface layer 23 and the adhesive layer 24 are omitted, and only the cross sections of the base material layer 21 and the cushion layer 22 are shown.

Next, in the cross-sectional image, the first reference line RL1 is drawn at the position of the bottom surface 21b of the base material layer 21, and the second reference line RL2 is drawn at the position of the upper surface 22a of the cushion layer 22. Next, in the cross-sectional image, a line orthogonal to RL1 is drawn from any 10 points on the first reference line RL1 toward the second reference line RL2, and the lengths L1 to L10 with the points intersecting with RL2 are measured. Then, the average value of the lengths L1 to L10 is calculated, and this is used as the thickness Ta of the two layers. The thickness Ta of the two layers is an average value of the total thickness of the base material layer 21 and the cushion layer 22.

Next, in the cross-sectional image, the unevenness of the interface 50 between the base material layer 21 and the cushion layer 22 is confirmed. Here, the concave portion is a portion where the base material layer 21 is recessed downward due to the cushion layer 22 biting into the base material layer 21. The convex portion is a portion where the base material layer 21 bites into the cushion layer 22 and the base material layer 21 projects upward. Next, the lengths L11 to L20 between the bottoms of 10 randomly selected recesses and the second reference line RL2 are measured. In addition, the lengths L21 to L30 between the vertices of 10 randomly selected convex portions and the second reference line RL2 are measured. Then, the average value of the lengths L11 to L30 is calculated, and this is used as the thickness Tb of the cushion layer 22. The value obtained by subtracting the thickness Tb of the cushion layer 22 from the thickness Ta of the two layers is defined as the thickness Tc of the base material layer 21 (Tc = Ta—Tb). From the above, the thickness Tb of the cushion layer 22 and the thickness Tc of the base material layer 21 can be obtained.

FIG. 6 is a cross-sectional view schematically showing a portion including the side surface 21c of the base material layer 21 and the side surface 22c of the cushion layer 22 of the bathroom washroom floor according to the embodiment. FIG. 7 is a cross-sectional view schematically showing a portion of the base material layer 21 (enclosed portion 21d) provided so as to surround the periphery of the cushion layer 22. In FIG. 6, the side surface 21c of the base material layer 21 includes the first dense layer 51, and the side surface 22c of the cushion layer 22 includes the second dense layer 52. In FIG. 7, the upper surface 21e of the enclosure 21d of the base material layer 21 includes the first dense layer 51, and the upper surface 22a of the cushion layer 22 includes the second dense layer 52.

The base material layer 21 has an upper surface 21e, a side surface 21c, and a bottom surface 21b. By including the first dense layer 51 on at least one of these surfaces, it is possible to prevent water from entering the inside of the base material layer 21.

The density of the first dense layer 51 is higher than the density of the inner portion of the base material layer 21 than that of the first dense layer 51. Conversely, the porosity of the first dense layer 51 is lower than the porosity of the portion inside the first dense layer 51 in the base material layer 21. Therefore, the first dense layer 51 is more waterproof than the inner portion of the base layer 21 than the first dense layer 51.

The density of the base material layer 21 can be expressed as the number of first foamed bead particles 41 per unit area. The first foamed bead particles 41 are also present on the surface of the base material layer 21 including the first dense layer 51, and the first dense layer 51 contains the first foamed bead particles 41. The particle size of the first foamed bead particles 41 of the first dense layer 51 is preferably smaller than the particle size of the first foamed bead particles 41 in the portion inside the first dense layer 51 in the base material layer 21. Therefore, the number of the first foamed bead particles 41 per unit area in the first dense layer 51 is the number of the first foamed bead particles 41 per unit area in the portion inside the first dense layer 51 in the base material layer 21. Preferably more than. This can be determined by visual inspection of the cross section of the base material layer 21 or the first dense layer 51 or observation with an optical microscope.

The cushion layer 22 has an upper surface 22a, a side surface 22c, and a bottom surface 22b. By including the second dense layer 52 on at least one of these surfaces, it is possible to prevent water from entering the inside of the cushion layer 22. The density of the second dense layer 52 is higher than the density of the inner portion of the cushion layer 22 than the second dense layer 52. Conversely, the porosity of the second dense layer 52 is lower than the porosity of the portion inside the second dense layer 52 in the cushion layer 22. Therefore, the second dense layer 52 is more waterproof than the inner portion of the cushion layer 22 than the second dense layer 52.

The density of the cushion layer 22 can be expressed as the number of second foamed bead particles 42 per unit area. The second foamed bead particles 42 are also present on the surface of the cushion layer 22 including the second dense layer 52, and the second dense layer 52 contains the second foamed bead particles 42. The particle size of the second foamed bead particles 42 of the second dense layer 52 is preferably smaller than the particle size of the second foamed bead particles 42 in the portion inside the second dense layer 52 in the cushion layer 22. Therefore, the number of the second foamed bead particles 42 per unit area in the second dense layer 52 is larger than the number of the second foamed bead particles 42 per unit area in the portion inside the second dense layer 52 in the cushion layer 22. It is preferable that there are many. This can be determined by visual inspection of the cross section of the cushion layer 22 or the second dense layer 52 or observation with an optical microscope.

It is preferable that the first dense layer 51 and the second dense layer 52 are continuously formed. It is preferable that the first dense layer 51 and the second dense layer 52 are fused. That is, it is preferable that the first foamed bead particles 41 contained in the first dense layer 51 and the second foamed bead particles 42 contained in the second dense layer 52 are fused. As a result, it is possible to prevent water from infiltrating into the base material layer 21 and the cushion layer 22 from between the first dense layer 51 and the second dense layer 52.

It is preferable that the side surface 21c of the base material layer 21 includes the first dense layer 51 and the side surface 22c of the cushion layer 22 includes the second dense layer. According to the present embodiment, even if the silicone provided at the boundary between the washing floor and the wall is cut and water infiltrates into the side surface 22c of the cushion layer 22 and the side surface 21c of the base material layer 21, the second denseness is achieved. The layer 52 can prevent water from entering the inside of the cushion layer 22, and the first dense layer 51 can prevent water from entering the inside of the base material layer 21. This makes it possible to suppress the peeling of the base material layer 21 and the cushion layer 22 and the odor caused by the residual water inside the base material layer 21 and the cushion layer 22.

All the side surfaces 21c of the base material layer 21 may include the first dense layer 51. That is, the base material layer 21 may be surrounded by the first dense layer 51. Similarly, all side surfaces 22c of the cushion layer 22 may include a second dense layer 52. That is, the cushion layer 22 may be surrounded by the second dense layer 52. This makes it possible to further prevent water from entering the inside of the base material layer 21 and the cushion layer 22.

It is preferable that the first dense layer 51 and the second dense layer 52 are continuous at the interface 50 between the base material layer 21 and the cushion layer 22. That is, it is preferable that the first dense layer 51 and the second dense layer 52 are continuous layers in the stacking direction of the base material layer 21 and the cushion layer 22. As a result, it is possible to reliably prevent water from entering between the base material layer 21 and the cushion layer 22, and it is possible to suppress peeling between the base material layer 21 and the cushion layer 22. The first dense layer 51 and the second dense layer 52 are preferably fused, and more preferably heat-fused. That is, the first foamed bead particles 41 contained in the first dense layer 51 and the second foamed bead particles 42 contained in the second dense layer 52 are fused at the interface 50 between the base material layer 21 and the cushion layer 22. It is preferable that the particles are fused, and it is more preferable that the particles are heat-sealed. As a result, it is preferable that the first dense layer 51 and the second dense layer 52 are continuous at the interface 50 between the base material layer 21 and the cushion layer 22.

The upper surface 22a of the cushion layer 22 preferably includes the second dense layer 52. As a result, it is possible to prevent the silicone provided at the boundary between the washing floor and the wall from being cut off and water from entering the inside of the cushion layer 22 from the upper surface 22a of the cushion layer 22.

As shown in FIG. 7, the cushion layer 22 may be provided on the base material layer 21, and the base material layer 21 may have an enclosure portion 21d that surrounds the cushion layer 22. In this case, it is preferable that the upper surface 21e of the enclosure 21d of the base material layer 21 includes the first dense layer 51, and the upper surface 22a of the cushion layer 22 includes the second dense layer 52. In this case, the surface layer 23 may be provided on the first dense layer 51 included in the upper surface 21e of the enclosure 21d of the base material layer 21 and the second dense layer 52 included in the upper surface 22a of the cushion layer 22. preferable. This makes it possible to prevent water from entering between the base material layer 21 and the surface layer 23 and inside the cushion layer 22. Therefore, it is possible to prevent water from entering the inside of each layer of the cushion layer 22 and the base material layer 23. Further, it is preferable that the side surface of the enclosed portion 21d of the base material layer 21 has the first dense layer 51. More preferably, the bottom surface of the enclosure 21d of the base material layer 21 has a first dense layer 51.

The enclosure 21d of the base material layer 21 may be provided around the cushion layer 22 while forming a gap between the base layer 21 and the cushion layer 22. In this case, it is preferable to have the first dense layer 51 not only on the upper surface 21e of the enclosure 21d of the base material layer 21 but also on the surface of the enclosure 21d forming a gap with the cushion layer 22. Further, it is preferable that the side surface of the cushion layer 22 forming a gap between the base material layer 21 and the surrounding portion 21d has a second dense layer 52. As a result, it is possible to prevent water from entering the inside of the base material layer 21 and the cushion layer 22.

The upper surface 21e of the enclosure 21d of the base material layer 21 may be provided so as to have a step with the upper surface 22a of the cushion layer 22. Specifically, the upper surface 21e of the enclosure 21d of the base material layer 21 is higher than the upper surface 22a of the cushion layer 22 to have a step, and the upper surface 21e of the enclosure 21d of the base material layer 21 is the upper surface of the cushion layer 22. An embodiment having a step due to being lower than 22a can be mentioned. Also in this case, it is preferable that the upper surface 21e of the enclosure 21d of the base material layer 21 has the first dense layer 51, and the upper surface 22a of the cushion layer 22 has the second dense layer 52. Further, it is preferable that the side surface of the cushion layer 22 forming the step and the side surface of the enclosed portion 21d of the base material layer 21 have a dense layer. Specifically, it is preferable that the side surface of the cushion layer 22 forming the step has the second dense layer 52. Further, it is preferable that the side surface of the enclosed portion 21d of the base material layer 21 forming the step has the first dense layer 51. More preferably, the first dense layer 51 formed on the surface of the enclosure 21d of the base material layer 21 and the second dense layer 52 formed on the surface of the cushion layer 22 are continuously formed. Is preferable. As a result, it is possible to prevent water from entering the inside of the base material layer 21 and the cushion layer 22.

The bottom surface 21b of the base material layer 21 preferably includes the first dense layer 51. Thereby, for example, water leakage under the base material layer 21 can be further prevented.

It is preferable that the thickness t1 of the first dense layer 51 (thickness in the direction from the side surface 21c to the inside in FIG. 6) has a thickness capable of reliably preventing water from entering the inside of the base material layer 21. .. Similarly, it is preferable that the thickness t2 of the second dense layer 52 (thickness in the direction from the side surface 22c toward the inside) t2 has a thickness capable of reliably preventing water from entering the inside of the cushion layer 22.

The first foamed bead particles 41 of the first dense layer 51 are in close contact with other first foamed bead particles 41 inside the first dense layer 51 in the base material layer 21. The second foamed bead particles 42 of the second dense layer 52 are in close contact with the second foamed bead particles 42 inside the second dense layer 52 in the cushion layer 22. Therefore, in each layer of the base material layer 21 and the cushion layer 22, the adhesion between the dense layers 51 and 52 and the inner portion thereof is high, and water into each layer of the base material layer 21 and the cushion layer 22 is water. Intrusion can be prevented more reliably.

Hereinafter, a method for manufacturing the bathroom washing floor 10 of the present invention will be described. The bathroom washing floor 10 of the present invention can be manufactured by using a known method. For example, the following method can be used. First, a method for manufacturing the base material layer 21 and the cushion layer 22 will be described. A base material layer 21 including the first dense layer 51 on at least one surface and a cushion layer 22 including the second dense layer 52 on at least one surface are prepared, and these are joined to prepare the base material layer 21 and the cushion layer. It is possible to obtain a laminated body in which 22 and 22 are laminated. Further, the base material layer 21 and the cushion layer 22 are prepared and joined to obtain a laminated body in which the base material layer 21 and the cushion layer 22 are laminated, and then on at least one surface of the base material layer 21. A method of forming the first dense layer 51 and forming the second dense layer 52 on at least one surface of the cushion layer 22 can be used. As a joining method, an adhesive, heat fusion, or the like can be used. Further, as a method of forming the dense layer, a method of heating the surface on which the dense layer is formed with a heat source to melt the surface can be used. Moreover, the following method can be used as a preferable method.
8 (a) to 8 (d) are explanatory views schematically showing a method for manufacturing a base material layer and a cushion layer of a bathroom washroom floor according to an embodiment.
As shown in FIGS. 8 (a) to 8 (d), the base material layer 21 and the cushion layer 22 are each heated and foamed from raw material beads made of thermoplastic resin in the mold M, and the foamed bead particles are formed. It is manufactured by forming an aggregate of. The base material layer 21 and the cushion layer 22 are each formed by so-called bead foaming.

More specifically, first, as shown in FIG. 8A, the first raw material beads 46, which is the raw material of the first foamed bead particles 41, are accommodated in the mold M (first accommodating step). As the first raw material beads 46, it is preferable to use pre-foamed beads.

Next, as shown in FIG. 8B, the mold M is closed, the first raw material beads 46 are heated by steam, and the first raw material beads 46 housed in the mold M are fused (fused). Process).

Next, as shown in FIG. 8C, the mold M is opened, and the second raw material beads 47, which is the raw material of the second foamed bead particles 42, are accommodated on the first raw material beads 46 (second accommodation). Process). As the second raw material beads 47, it is preferable to use pre-foamed beads.

Next, as shown in FIG. 8D, the first raw material beads 46 and the second raw material beads 47 are foamed by closing the mold M and raising the temperature inside the mold M (foaming step). Then, the laminated body is cooled (cooling step). As a cooling method, a known method such as air cooling can be used. As a result, it is possible to obtain a laminated body in which the base material layer 21 made of the aggregate of the first foamed bead particles 41 and the cushion layer 22 made of the aggregate of the second foamed bead particles 42 are fused.

The above-mentioned first dense layer 51 is formed by compressing a portion pressed against the mold M when the first raw material beads 46 are foamed at a higher temperature than a portion not in contact with the mold M. Similarly, the second dense layer 52 is formed by compressing the portion pressed against the mold M when the second raw material beads 47 are foamed at a higher temperature than the portion not in contact with the mold M.

The surface layer 23 is laminated on the surface of the cushion layer 22 of the laminate obtained as described above. Specifically, in the cushion layer 22, the surface layer 23 is arranged on the surface on the side where the base material layer 21 is not laminated to obtain a laminated body in which the base material layer 21, the cushion layer 22 and the surface layer 23 are laminated. be able to. When the surface layer 23 and the cushion layer 22 are joined using an adhesive, the adhesive is placed on the surface of the cushion layer 22. After that, the surface layer 23 is laminated on the adhesive. Then, if necessary, heating or the like is performed. From the above, it is possible to manufacture the bathroom washing floor 10 in which the surface layer 23, the cushion layer 22 and the base material layer 21 are laminated. When an adhesive is used, it is preferable to use a hot melt type adhesive or double-sided tape as the adhesive.

As described above, it is preferable to use a resin sheet as the surface layer 23. A resin sheet having a desired function can be used. Specifically, a resin sheet having functions such as flexibility, waterproofness, and hydrophilicity can be used.

The embodiment of the present invention has been described above. However, the present invention is not limited to these descriptions. The above-mentioned embodiments which have been appropriately designed by those skilled in the art are also included in the scope of the present invention as long as they have the features of the present invention. For example, the shape, dimensions, material, arrangement, and the like of each element provided in the bathroom washroom floor and the like are not limited to those exemplified, and can be appropriately changed.
Further, the elements included in each of the above-described embodiments can be combined as long as technically possible, and the combination thereof is also included in the scope of the present invention as long as the features of the present invention are included.

2 bathroom unit, 10 bathroom washroom floor, 10a surface, 10h drain, 20 floor body, 21 base material layer, 21c side surface, 21d enclosure, 21h opening, 22 cushion layer, 22c side surface, 22h opening, 23 surface layer , 23h opening, 24 adhesive layer, 30 frame body, 30h opening, 31 outer frame, 32 lattice part, 33 support legs, 41, 42 first, second foam bead particles, 41a, 42a dense part, 41b, 42b Sparse part, 46, 47 1st and 2nd raw material beads, 50 interface, 51 1st dense layer, 52 2nd dense layer, 60 bathtub, 61 support legs, 62 drainage pipe, 65a, 65b small panel, 67 bath apron, 71a-71f wall panel, 100 installation surface, M type

Claims (5)

Substrate layer and
A cushion layer provided on the base material layer and in contact with the base material layer,
A surface layer provided on the cushion layer and forming the surface of the bathroom washroom floor,
Equipped with
The base material layer is an aggregate of first foamed bead particles made of a thermoplastic resin.
The cushion layer is an aggregate of second foamed bead particles made of a thermoplastic resin.
A bathroom washroom floor, characterized in that at least one side surface of the substrate layer comprises a first dense layer and at least one side surface of the cushion layer comprises a second dense layer. The bathroom washing floor according to claim 1, wherein the first dense layer and the second dense layer are continuously formed. The first dense layer contains the first foamed bead particles, and the first foamed bead particles of the first dense layer are formed on the first foamed bead particles inside the first dense layer in the base material layer. In close contact,
The second dense layer contains the second foamed bead particles, and the second foamed bead particles of the second dense layer adhere to the second foamed bead particles inside the second dense layer in the cushion layer. The bathroom washroom floor according to claim 1 or 2, characterized in that the particles are made of. The bathroom washing floor according to any one of claims 1 to 3, wherein the bottom surface of the base material layer contains the first dense layer, and the upper surface of the cushion layer contains the second dense layer. .. The base material layer has an enclosure provided so as to surround the cushion layer.
The bathroom washing floor according to any one of claims 1 to 4, wherein the upper surface of the enclosure portion of the base material layer includes the first dense layer.

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