JP2012158914A - Bathroom floor sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bathroom floor sheet having an excellent nonslip property, which allows a bathing person to hardly feel pain and enables dirt to be easily removed.SOLUTION: A bathroom floor sheet comprises a sheet body 1, a plurality of large protrusions 2 which project upward from the surface of the sheet body 1, and a plurality of small protrusions 31 and 32 which project upward from the surface of each of the large protrusions 2. The small protrusions 31 and 32 have an area in the planar shape smaller than that of the large protrusion 2. The plurality of small protrusions 31 and 32 are arranged on the surface of the large protrusion 2 at prescribed intervals. The small protrusions 31 and 32 have a projection height of 0.09 to 0.20 mm, and a maximum width of 0.40 to 1.20 mm in the planar shape. The plurality of small protrusions 31 and 32 have a formation interval of 0.75 to 1.20 mm.

Description

  The present invention relates to a floor sheet laid on a bathroom floor.

The bathroom floor generally has a structure having a non-slip performance. Hereinafter, the non-slip property is referred to as “slip resistance”.
As an anti-slip floor structure, a pattern portion in which three elongated small protrusions extending in the vertical direction are arranged in parallel and a pattern portion in which three elongated small protrusions extending in the horizontal direction are arranged in parallel are provided. An anti-slip structure for a bathroom floor is known in which the ends of the small protrusions are opened so that water can flow (Patent Document 1).
By the way, since the bather is naked in the bathroom, the bather's bare skin directly touches the floor in the bathroom.
And the anti-slip structure of the bathroom floor of the said patent document 1 may have a pain in a bather, when a part of a bather's body, such as a knee, gets on the area | region in which the several small protrusion was provided. In addition, since a plurality of elongated small protrusions are arranged in parallel in a predetermined direction, dirt is likely to adhere to the base of the standing peripheral surface of the small protrusion, and the attached dirt is difficult to remove.

Another known anti-slip floor structure is a bathroom floor structure in which an embossed pattern is formed on the surface, a smooth surface is formed in the concave portion of the embossed pattern, and a rough surface is formed in the convex portion. (Patent Document 2). This Patent Document 2 discloses an FRP molded product formed using a roughened mold recess obtained by blasting as a member constituting a floor structure of a bathroom.
However, since the rough surface by the blasting process is disordered and has fine unevenness, the roughened convex part of Patent Document 2 has a problem that it is difficult to remove dirt even if it has anti-slip properties. There is. Moreover, when the degree of the roughening is increased, the bather on the roughened convex portion may feel pain.

Japanese Patent Laid-Open No. 10-14802 JP-A-7-18829

  An object of the present invention is to provide a bathroom floor sheet that is excellent in anti-slip property, makes it difficult for a bather to feel pain, and further easily removes dirt.

  The bathroom floor sheet of the present invention is a seat body, a plurality of large protrusions protruding upward from the surface of the seat body, and a plurality of small protrusions protruding upward from the surface of each large protrusion, The small protrusion has an area of a planar shape smaller than an area of the planar shape of the large protrusion, and the plurality of small protrusions are arranged in parallel on the surface of the large protrusion with a predetermined interval. The protrusion height of the small protrusions is 0.09 mm to 0.20 mm, the maximum width in the planar shape of the small protrusions is 0.40 mm to 1.20 mm, and the formation intervals of the plurality of small protrusions Is 0.75 mm to 1.20 mm.

In a preferred bathroom floor sheet of the present invention, the small protrusion has an upright peripheral surface that rises obtusely from the surface of the large protrusion, and a protruding top that is connected to the upper end of the upright peripheral surface. A boundary portion between the standing peripheral surface and the surface of the large protrusion, and a boundary portion between the rising peripheral surface and the protruding top surface are rounded off.
In a more preferred bathroom floor sheet of the present invention, the planar shape of the plurality of small protrusions is substantially circular, the planar shape of the plurality of large protrusions is rectangular, and the surface shape in the cross section is formed in an arc shape that swells upward. Has been.
In a more preferred bathroom floor sheet according to the present invention, some or all of the plurality of large protrusions are arranged in parallel with the long sides thereof being substantially parallel, and a groove between the long sides of adjacent large protrusions. A plurality of large protrusions arranged side by side with the long sides being substantially parallel to one unit are formed as a unit, and a plurality of the units are arranged in a predetermined pattern on the surface of the sheet body. And a recess deeper than the groove is formed between the adjacent units.

The bathroom floor sheet of the present invention is excellent in anti-slip properties, has an effect of making it difficult for bathers to feel pain and easily removing dirt.
In the preferred bathroom floor sheet of the present invention, it is particularly easy to remove dirt using a brush or the like, and the bather does not feel pain.
The more preferable bathroom floor sheet of this invention can discharge | emit the water adhering to the surface of a large protrusion from a groove part through a recessed part. In such a bathroom floor sheet, since water does not remain on the surface of the large protrusion for a long time, it is possible to prevent adhesion of dirt and scale and generation of mold.

The top view which shows one embodiment of the floor sheet for bathrooms of this invention. The top view which shows other embodiment of the floor sheet for bathrooms of this invention. The enlarged plan view of one unit. The enlarged plan view of one large protrusion. AA sectional view taken on the line AA of FIG. However, the small protrusions included in the cross section along line AA are not shown. BB sectional drawing of FIG. CC sectional view taken on the line of FIG. Sectional drawing which shows other embodiment of the floor sheet for bathrooms of this invention. However, this cross-sectional view is a cross-section obtained by cutting the floor sheet of another embodiment in the same direction as the line AA of FIG.

Hereinafter, the present invention will be described with reference to the drawings as appropriate.
FIG. 1 is a plan view showing one embodiment of a bathroom floor sheet of the present invention, and FIG. 2 is a plan view showing another embodiment of the bathroom floor sheet. 1 and 2 show only a part of a plane of a bathroom floor sheet, and an actual bathroom floor sheet is formed by repeating the arrangement pattern of units shown in both drawings.

The bathroom floor sheet of FIG. 1 and FIG. 2 is the same for the rest of the structure except that the arrangement pattern of the units (one collective part in which three large protrusions are arranged in parallel) is different. . Therefore, in explaining the constituent members and each component of the bathroom floor sheet, the explanation will be made mainly based on the bathroom floor sheet of FIG.
FIG. 3 is an enlarged plan view of one unit, and FIG. 4 is a further enlarged plan view of one large protrusion included in the one unit.

In the present specification, the description “AAA to BBB” means “AAA to BBB”. Further, a bathroom floor sheet may be simply abbreviated as a floor sheet.
Furthermore, when a bather's body part (such as a knee) gets on the bather, it is sometimes called “anti-pain” that the bather can hardly feel pain, and when it is difficult for dirt to adhere, it is sometimes called “anti-stain”. .

As shown in FIGS. 1 and 2, the bathroom floor sheet of the present invention includes a seat body 1 and a plurality of large protrusions 2 that protrude upward from the surface of the seat body 1. As shown in FIGS. 3 and 4, a plurality of small protrusions 31 and 32 projecting upward from the surface 2 a of the large protrusion 2 are provided on the surface 2 a of each large protrusion 2. In addition, in FIG.1 and FIG.2, illustration of the small protrusions 31 and 32 is abbreviate | omitted. The plurality of small protrusions 31 and 32 may have the same shape and the same size, may have a three-dimensional similarity, or may have a different shape. The plurality of small protrusions 31 and 32 may be provided irregularly on the surface 2 a of the large protrusion 2, but regularly (for example, in a region of the entire surface 2 a of the large protrusion 2 or a part thereof) , Preferably at a predetermined interval).
As for the floor sheet of this invention, the planar shape may be formed in the rectangular shape or polygonal shape like a floor tile, and may be formed in the elongate sheet | seat. The floor sheet formed in a long shape is usually wound around a roll and used for storage and transportation.

The sheet body 1 is a basic member constituting the floor sheet of the present invention, and a large protrusion 2 and small protrusions 31 and 32 are formed on the surface of the sheet body 1.
Since the sheet body 1 can be easily stored and transported and can be easily carried into the bathroom at the time of construction, it is preferable that the sheet body 1 has flexibility such that it can be wound around a roll. The seat body 1 preferably has a cushioning property in order to enhance pain resistance, and further has a heat insulating property in order to increase heat shock reduction and warmth in the bathroom, and therefore preferably includes a foam layer. .
The sheet body 1 may be entirely formed of a foam layer, but has a non-foamed surface layer in order to form the large protrusions 2 and the small protrusions 31 and 32 that are not easily crushed on the surface of the sheet body 1. Is preferred.

Specifically, as shown in FIGS. 5 to 7, the sheet body 1 includes a non-foamed surface layer 91 and foamed layers 93 and 95 provided integrally on the back side of the surface layer 91.
In the illustrated example, a non-foamed intermediate layer 92 is provided between the surface layer 91 and the upper foamed layer 93. For example, the foam layer includes two layers, an upper foam layer 93 and a lower foam layer 95, and a reinforcing layer 94 is provided between the upper foam layer 93 and the lower foam layer 95.

The surface layer 91 is a layer constituting the surface of the sheet main body 1, and uneven portions such as the large protrusions 2, the small protrusions 31 and 32, the groove portions 4, and the recesses 51 and 52 are formed on the surface of the surface layer 91.
Each uneven portion such as the large protrusion 2 can be usually formed by pressing an embossing roller against the surface of the surface layer 91.
The surface layer 91 is a layer containing a resin as a main component. Moreover, when it is desired to give a desired design to the floor sheet, the surface layer 91 may be formed by mixing a colorant with the resin. Alternatively, a desired design may be printed on the front surface or the back surface of the surface layer 91. When a design is printed on the surface of the surface layer 91, it is desirable to provide a surface protective layer made of a transparent resin or the like in order to improve the durability of the printed surface.

  Furthermore, the surface of the surface layer 91 may be subjected to a hydrophilic treatment. The hydrophilization treatment may be performed at any time before or after the formation of each concavo-convex portion such as the large protrusion 2. However, in order to ensure the surface of the large protrusion 2 and the like is hydrophilic, It is preferable to carry out after forming each concavo-convex portion such as the protrusion 2. The surface of the hydrophilized surface layer 91 is easy to be familiar with water. Therefore, water adhering to the surface 2a of the large protrusion 2 formed on the surface layer 91 can be smoothly guided from the groove 4 to the recesses 51 and 52. it can. Further, the shape of the small protrusions 31 and 32 and the surface of the hydrophilic surface layer 91 have an action of breaking and pushing the water droplets attached to the surface layer 91, and the surface area of the water attached to the surface layer 91 is thereby increased. Spreading out and drying can be accelerated.

  As a hydrophilic treatment method, for example, a method of applying a hydrophilic coating agent or a hydrophilic paint to the surface layer 91 is simple. However, the hydrophilization method is not limited to this, and a method of forming the surface layer 91 by molding a resin composition in which a hydrophilic agent is mixed in the resin, corona discharge treatment, plasma treatment, ultraviolet irradiation treatment, etc. on the surface layer 91 are performed. There are a method of generating active species on the surface of the surface layer 91 by performing, a method of roughening the surface of the surface layer 91 by performing etching, blasting, and the like on the surface layer 91.

The resin that forms the surface layer 91 is not particularly limited, and is generally vinyl chloride resin; olefin resin; vinyl acetate resin such as ethylene-vinyl acetate copolymer; acrylic resin such as ethylene-methacrylate resin. An amide resin; an ester resin; and a thermoplastic resin such as various elastomers such as olefin elastomers and various elastomers such as styrene elastomers. From the viewpoint of excellent flexibility, a vinyl chloride resin is preferable. The floor sheet having the surface layer 91 mainly composed of vinyl chloride resin is easy to manufacture and has appropriate flexibility, so that the bather can be prevented from feeling pain.
Although the thickness of the surface layer 91 is not specifically limited, Preferably it is 0.2 mm-0.7 mm.

The intermediate layer 92 is made of a non-foamed layer and is provided as necessary. The intermediate layer 92 has a function of holding the shape so that the shape of each uneven portion formed on the surface of the surface layer 91 is not crushed.
The intermediate layer 92 is formed of a thermoplastic resin as exemplified in the column of the surface layer 91, and is preferably formed mainly of a vinyl chloride resin.
The thickness of the intermediate layer 92 is not particularly limited, but is preferably 0.05 mm to 0.30 mm.

As shown in FIG. 5 to FIG. 7, when the foam layer is composed of two layers of the upper foam layer 93 and the lower foam layer 95, they may be formed of the same material or different materials. May be.
The upper foam layer 93 and the lower foam layer 95 are formed from a layer containing a resin, for example. Examples of the resin forming the upper foam layer 93 and the lower foam layer 95 include thermoplastic resins as exemplified in the column of the surface layer 91. The upper foam layer 93 and the lower foam layer 95 are preferably vinyl chloride. It is formed mainly from a resin.

The upper foam layer 93 and the lower foam layer 95 may have the same expansion ratio or different expansion ratios.
The expansion ratio of the upper foam layer 93 and the lower foam layer 95 is not particularly limited, but is usually 1.0 to 5.0 times, preferably 1.1 to 3.5 times. If the expansion ratio is too low, the cushioning property is lacking, and there is a possibility that sufficient pain resistance cannot be imparted to the floor sheet. If the expansion ratio is too high, the surface layer 91 is likely to be recessed when a bather gets on, and there is a risk that the slip resistance due to the provision of the small protrusions 31 and 32 will not be sufficiently achieved.

  Further, when the expansion ratio of the upper foam layer 93 is smaller than the expansion ratio of the lower foam layer 95, the depression of the surface layer 91 can be effectively suppressed when the bather gets on. In this case, the expansion ratio of the upper foam layer 93 is preferably 1.1 to 3.0 times, and the expansion ratio of the lower foam layer 95 is preferably 1.5 to 3.5 times.

  The thickness of the upper foam layer 93 and the lower foam layer 95 is not particularly limited. For example, the thickness of the upper foam layer 93 is 0.2 mm to 1.2 mm, and the thickness of the lower foam layer 95 is 1. 4 mm to 2.6 mm.

Here, the foam layer of the floor sheet according to one embodiment has a two-layer structure of the upper foam layer 93 and the lower foam layer 95, but the foam layer is not limited to the two-layer structure, and may be a single layer. A multilayer structure of three or more layers may be used.
A floor sheet having a single foam layer can be easily formed. On the other hand, a floor sheet having a foam layer composed of two or more layers is improved in strength by providing a reinforcing layer 94 between the plurality of foam layers, and the material of each foam layer and the foam ratio are made different. Therefore, the function can be improved. Furthermore, when a reinforcing layer is provided between the plurality of foam layers, a stable layer structure can be obtained even if the foam layer is thick.

FIG. 8 is a cross-sectional view of a floor sheet having a single foam layer 96.
The expansion ratio of the single foam layer 96 is 1.0 to 5.0 times, preferably 1.1 to 2.0 times. Since a reinforcing layer cannot be provided in the single foamed layer 96, the foaming ratio is preferably low in order to ensure a certain strength, but if the foaming ratio is too low, the cushioning property is lacking. There is a possibility that the floor sheet cannot be provided with sufficient pain resistance. On the other hand, if the expansion ratio is too high, the surface layer 91 is likely to be recessed when a bather gets on, and there is a possibility that the anti-slip property due to the provision of the small protrusions 31 and 32 may not be sufficiently achieved.

  Next, the reinforcing layer 94 is a layer for increasing the rigidity of the sheet body 1 and imparting dimensional stability to the sheet body 1. The reinforcing layer 94 is provided between the plurality of foam layers. When the foam layer is composed of the upper foam layer 93 and the lower foam layer 95, the reinforcement layer 94 is provided between the upper foam layer 93 and the lower foam layer 95.

The reinforcing layer 94 is not particularly limited as long as it contains fibers, and examples thereof include glass mats, glass nets, resin mats, resin nets, nonwoven fabrics or felts made of inorganic fibers or organic fibers, and woven fabrics. Can be mentioned. The fibers used for the reinforcing layer 94 are preferably those having high adhesiveness with the upper foam layer 93 and the lower foam layer 95, and examples thereof include glass fiber, vinylon fiber, polyester fiber, polyamide fiber, and polyimide fiber. In particular, glass fiber is preferred because of its excellent strength and small dimensional change. When using a glass ^fiber, a glass fiber woven or nonwoven fabric of 10g / ^{m 2} ~100g / m 2 is particularly preferred. For example, the same basis weight is preferable for woven or non-woven fabrics using other fibers such as polyester.
The thickness of the reinforcing layer 94 is usually about 0.1 mm to 0.4 mm.

  The sheet body 1 is not limited to the layer configuration having the upper foam layer 93 and the lower foam layer 95 as described above, and any one or all of these foam layers are replaced with a non-foam layer. It is also possible.

As shown in FIGS. 1 to 7, a plurality of large protrusions 2 protrude upward from the surface of the sheet body 1. A plurality of small protrusions 31 and 32 protrude upward on the surface 2 a of each large protrusion 2. The planar shape of the small protrusions 31 and 32 is much smaller than the planar shape of the large protrusion 2, and therefore the area of the planar shape of the small protrusions 31 and 32 is smaller than the area of the planar shape of the large protrusion 2. .
The plurality of large protrusions 2 may be arranged in an arbitrary pattern, but are preferably arranged in a regular predetermined pattern from the viewpoint of slip resistance and pain resistance.

In the present embodiment, the large protrusion 2 is formed in a rectangular planar shape. A plurality of large rectangular projections 2 in a plane rectangular shape are juxtaposed with their long sides substantially parallel.
In addition, in this specification, a planar shape means the shape when the surface is seen from the perpendicular direction with respect to the surface of a floor sheet.
As described above, a plurality of large protrusions 2 are formed on the surface of the sheet body 1, and all of the plurality of large protrusions 2 are arranged in parallel with their long sides being substantially parallel. Alternatively, some of the plurality of large protrusions 2 may be arranged side by side with their long sides substantially parallel.

In the present embodiment, for example, as shown in FIGS. 1 to 3, a collective portion in which three large protrusions 2 are arranged in parallel with the long sides thereof being substantially parallel is defined as one unit 10. A plurality of 10 are arranged in a regular predetermined pattern on the surface of the sheet body 1.
The arrangement pattern of the plurality of units 10 is not particularly limited. For example, the floor sheet shown in FIG. 1 has a first collective unit 11 composed of four units 10 arranged in two rows and two stages so that the long sides of the large protrusions 2 of adjacent units 10 are orthogonal to each other. Side by side.
The floor sheet shown in FIG. 2 has one row, two tiers, or two rows so that the long sides of the first collective unit 11 composed of the four units 10, the single unit 10, and the large protrusion 2 are parallel to each other. A second collective unit 12 composed of two units 10 arranged in one stage, and an aggregate composed of one first collective unit 11, one unit 10, and two second collective units 12 They are regularly arranged side by side.

With respect to each large protrusion 2 constituting one unit 10 (in this embodiment, one unit 10 is composed of three large protrusions 2), the groove 4 is formed between the long sides of the adjacent large protrusions 2 described above. It is formed parallel to the long side. The groove 4 is a valley formed by joining the long sides of the large protrusion 2 whose surface 2a is formed in an arc shape (in a cross-sectional shape), and is formed of an elongated recess in plan view.
Concerning the collective units 11 and 12 in which the plurality of units 10 are arranged in a predetermined pattern, recesses 51 and 52 are formed between the adjacent units 10. The recesses 51 and 52 are formed as elongated recesses in plan view, and the depth is deeper than the depth of the groove 4.
The recesses 51 and 52 differ depending on the arrangement pattern of the plurality of units 10. For example, the recesses 51 and 52 include four units 10 arranged in two rows and two stages so that the long sides of the large protrusions 2 of adjacent units 10 are orthogonal to each other. In the case of the first collective unit 11, two types of recesses 51 and 52 (a first recess 51 and a second recess 52) are formed.

  The first recess 51 is a recess formed between adjacent units 10 in one collective unit in which the units 10 are arranged so that the long sides of the large protrusions 2 are orthogonal to each other. The first recess 51 is elongated so as to be orthogonal to the long side of the large protrusion 2 of one unit 10 and to be parallel to the long side of the large protrusion 2 of another adjacent unit 10. Has been. In the floor sheet shown in FIG. 1, each first recess 51 is connected in a cross shape in the first collective unit 11, and the end of each first recess 51 is opened to the second recess 52. It is arranged so that.

  The 2nd recessed part 52 in the floor sheet of FIG. 1 is a recessed part formed between the adjacent 1st aggregate | assembly units 11. As shown in FIG. The second recess 52 is elongated so as to be orthogonal to the extending direction of the first recess 51. For this reason, after laying the floor sheet of this invention in a bathroom, water flows in the extending direction of the 2nd recessed part 52 according to the inclination of a bathroom floor. In the arrangement pattern of the unit 10 shown in FIG. 1, the second recess 52 extends in a straight line, and the second recess 52 does not have a portion that blocks the flow of water in the extending direction. There is an advantage that water flows promptly in the extending direction of the second recess 52.

  Further, one first collective unit 11 in the arrangement pattern shown in FIG. 1 is arranged in two rows and two stages so that the long sides of the large protrusions 2 of the adjacent units 10 are orthogonal to each other. Therefore, in one first collective unit 11, the water that flows along the groove 4 toward the first recess 51 hits the side surface of the large protrusion 2 that constitutes the adjacent unit 10. Is branched to the left and right in the first recess 51, and a part thereof rides on the surface 2a of the large protrusion 2. The water riding on the surface 2a of the large protrusion 2 is further broken by the small protrusions 31 and 32, and therefore spreads on the surface 2a without forming water droplets. The water that spreads on the surface 2a of the large protrusion 2 has a large surface area, and therefore easily evaporates. For this reason, drying of the floor of a bathroom can be accelerated. In particular, in the floor sheet in which the surface layer 91 is subjected to a hydrophilic treatment, the surface area of water is effectively increased, so that drying can be further accelerated.

  The second recess 52 in the floor sheet of FIG. 2 is different from the second recess of FIG. 1, between the adjacent first aggregate unit 11 and the second aggregate unit 12, between the two second aggregate units 12, They are formed between one adjacent unit 10 and the first collective unit 11, or between one adjacent unit 10 and the second collective unit 12, respectively.

  In the second collective unit 12, the units 10 are arranged so that the long sides of the large protrusions 2 are parallel to the second recesses 52 present on the sides of the first collective unit 11. For this reason, the water flowing in the extending direction in the first recess 51 of the first collective unit 11 flows into the second recess 52, and the water flowing into the second recess 52 extends in the second recess 52. Flow in the direction. Therefore, the water flowing according to the inclination of the bathroom is spread over a wide area. That is, in the arrangement pattern shown in FIG. 2, the water flowing from the first concave portion 51 of the first collective unit 11 into the second concave portion 52 hits the second collective unit 12, so that the water becomes the second concave portion. In addition to branching to the left and right at 52, a part thereof rides on the surface 2 a of the large protrusion 2 constituting the second collective unit 12. The water riding on the surface 2a of the large protrusion 2 is further broken by the small protrusions 31 and 32, and therefore spreads on the surface 2a without forming water droplets. The water that spreads on the surface 2a of the large protrusion 2 has a large surface area, and therefore easily evaporates. For this reason, drying of the floor of a bathroom can be accelerated. In particular, in the floor sheet in which the surface layer 91 is subjected to a hydrophilic treatment, the surface area of water is effectively increased, so that drying can be further accelerated.

  The floor sheet of the present invention can obtain a desired effect by appropriately selecting the arrangement pattern of the units 10.

  In the bathroom floor sheet of the present invention, since the groove 4 and the recesses 51 and 52 are formed, water attached to the surface 2a of the large protrusion 2 is easily discharged from the recesses 51 and 52 through the groove 4. Water hardly remains on the surface 2 a of the large protrusion 2. Moreover, even when water remains, as described above, the surface area of water is increased, so that it can be dried quickly. For this reason, the floor sheet excellent in antifouling property and antifungal property can be provided.

The first recess 51 and the second recess 52 may have the same depth, but the second recess 52 is preferably deeper than the first recess 51. That is, it is preferable that the relationship of the depth of the second recess 52> the depth of the first recess 51> the depth of the groove 4 is satisfied.
By satisfying such a relationship, water that has flowed into each groove 4 gathers in the first recess 51, and further, water that has flowed into each first recess 51 gathers in the second recess 52, and a large amount of water flows into the second recess. Even if it flows to 52, water can be discharged through the second recess 52 without overflowing water in the first recess 51. For the same reason, the width of the first recess 51 and the second recess 52 may be the same, but the width of the second recess 52 is preferably longer than the width of the first recess 51.
The width of the first recess 51 and the width of the second recess 52 are the lengths in the direction orthogonal to the extending direction of the first recess 51 and the extending direction of the second recess 52, respectively.

The specific depth of the groove 4 is, for example, 0.05 mm to 0.5 mm. The difference between the depth of the groove 4 and the first recess 51 is 0.1 to 0.3 mm, and the difference between the depth of the groove 4 and the second recess 52 is 0.15 to 0.6 mm. is there.
However, the depth of the groove 4 refers to a difference in height between the deepest portion and the highest portion of the large protrusion 2.
Moreover, the width | variety of the 1st recessed part 51 is 0.5 mm-1.5 mm, for example, and the width | variety of a 2nd recessed part is 1.5 mm-4.0 mm.

As shown in FIGS. 1 to 4, one large protrusion 2 has a rectangular planar shape, but the ratio between the long side and the short side is not particularly limited. In the illustrated example, the long side of the large protrusion 2 is approximately three times as long as the short side. One unit 10 formed by juxtaposing three large protrusions 2 having such a ratio has a substantially square planar shape. The planar substantially square unit 10 is suitable when it is regularly arranged.
Specific dimensions of the large protrusion 2 are, for example, a long side of 15 mm to 35 mm and a short side of 5 mm to 12 mm.

The shape of the surface 2a in the cross section of the large protrusion 2 is preferably an arc shape that swells upward. The large protrusion 2 having such an arc-shaped surface 2a is easily guided to the groove portion 4 when water adhering to the surface 2a falls along the arc-shaped inclined surface. However, the shape of the surface 2a in the cross section of the large protrusion 2 refers to the contour of the surface 2a of the large protrusion 2 excluding the small protrusion when the large protrusion 2 is cut along a straight line parallel to the short side.
The large protrusion 2 having the arc-shaped surface 2a has the highest center portion in the short side direction.
The protrusion height of the large protrusion 2 at the highest portion corresponds to the depth of the groove 4.

A plurality of small protrusions 31 and 32 protrude from the surface 2a of each large protrusion 2 at intervals.
The planar shape of each of the plurality of small protrusions 31 and 32 is not particularly limited, and examples thereof include a planar circular shape; a planar elliptical shape; a planar polygonal shape such as a planar rectangular shape, a planar triangular shape, and a planar hexagonal shape; Can be mentioned.

The protrusion height of the small protrusions 31 and 32 is 0.09 mm to 0.20 mm, preferably 0.10 mm to 0.15 mm, and more preferably 0.11 mm to 0.14 mm.
The maximum width in the planar shape of the small protrusions 31 and 32 is 0.40 mm to 1.20 mm, preferably 0.45 mm to 1.20 mm, and more preferably 0.45 mm to 1.05 mm.
The interval between the plurality of small protrusions 31 and 32 is 0.75 mm to 1.20 mm, preferably 0.87 mm to 1.10 mm, more preferably more than 0.87 and not more than 1.10 mm.
The bathroom floor sheet of the present invention having such small protrusions 31 and 32 is excellent in slip resistance, pain resistance and antifouling property.

However, the protrusion height of the small protrusions 31 and 32 refers to a difference in height between the highest part of the small protrusions 31 and 32 and the surface of the large protrusion 2. When the protrusion heights of the plurality of small protrusions 31 and 32 are different, the protrusion height of the small protrusions 31 and 32 corresponds to the average value of the protrusion heights of the plurality of small protrusions 31 and 32. .
The maximum width of the small protrusions 31 and 32 is the diameter when the small protrusions 31 and 32 have a planar circular shape, and the plane when the small protrusions 31 and 32 have a planar shape other than the planar circular shape. The maximum width of the shape. Further, when the maximum widths of the plurality of small protrusions 31 and 32 are different, the maximum width of the small protrusions 31 and 32 corresponds to the average value of the maximum widths of the plurality of small protrusions 31 and 32.

  The interval between the small protrusions 31 and 32 is the length between the centers of gravity in the planar shape of the adjacent small protrusions 31 and 32. For example, when the small protrusions 31 and 32 have a planar circular shape, the length is obtained by connecting the centers of the adjacent small protrusions 31 and 32 with a straight line, and the small protrusions 31 and 32 have a planar shape other than the planar circular shape. In this case, it is a length obtained by connecting the center of gravity of the planar shape of the adjacent small protrusions 31 and 32 with a straight line, and when the small protrusions 31 and 32 are a mixture of a planar circular shape and other planar shapes, It is the length connecting the center and the center of gravity with a straight line. When the formation intervals of the small protrusions 31 and 32 are different, the formation interval of the small protrusions 31 and 32 corresponds to the average value thereof.

  The arrangement pattern of the plurality of small protrusions 31 and 32 is not particularly limited. For example, in the large protrusion 2 shown in FIGS. 3 and 4, a plurality of small protrusions 31 and 32 are regularly arranged in a plurality of rows and multiple stages. Since the plurality of small protrusions 31 and 32 are regularly arranged in a multistage manner, the sole of the bather hits the small protrusions 31 and 32 almost uniformly, so that a floor sheet excellent in slip resistance can be configured.

The plurality of small protrusions 31 and 32 may be different in size and shape, or may be different in at least one of size and shape.
The floor sheet of the illustrated example has the same shape and different size, that is, two types of small protrusions 31 and 32 having a three-dimensional similarity are alternately arranged. Hereinafter, the two types of small protrusions 31 and 32 having a three-dimensional similarity may be referred to as a first small protrusion 31 and a second small protrusion 32, respectively.
However, there may be three or more small protrusions. Thus, by providing small protrusions having different sizes, the number of small protrusions that can come into contact with the complex irregularities on the sole of the bather can be increased, and a floor sheet having excellent slip resistance can be configured.

Each of the first small protrusion 31 and the second small protrusion 32 has a planar circular shape.
The protrusion heights H1 and H2 of the first and second small protrusions 31 and 32 are within the range of the protrusion height of the small protrusions 31 and 32 (for example, 0.09 mm to 0.20 mm). preferable. The first and second small protrusions 31 and 32 may have the same protruding height, or one of the protruding heights may be longer. When the protrusion heights of the first and second small protrusions 31 and 32 are different, the difference between the protrusion heights is preferably 0.15 mm or less. If the difference between the protrusion heights of the first and second small protrusions 31 and 32 is too large, there is a possibility that the effect of preventing pain may not be sufficiently obtained.

  The maximum widths W1 and W2 in the planar shape of the first and second small protrusions 31 and 32 are preferably within the range of the maximum width of the small protrusions 31 and 32 (for example, 0.40 mm to 1.20 mm). . The first and second small protrusions 31 and 32 may have the same maximum width, or one of the maximum widths may be longer. In the present embodiment, as shown in FIG. 4, the maximum width W1 of the first small protrusion 31 is longer than the maximum width W2 of the second small protrusion 32, and the difference between the two is 0.15 mm or less. preferable.

The formation intervals L1, L2, and L3 of the first and second small protrusions 32 are preferably within the range of the formation intervals of the small protrusions 31 and 32 (for example, 0.75 mm to 1.20 mm). The formation intervals of the small protrusions 31 and 32 may be the same or different.
In the present embodiment, as shown in FIG. 4, the specific formation interval L1 between the adjacent first small protrusions 31, the specific formation interval L2 between the adjacent second small protrusions 32, and the first small protrusion 31 and the first small protrusion 31 The specific formation intervals L3 of the two small protrusions 32 are different from each other. The specific formation interval L1 of the adjacent first small protrusions 31 is preferably 0.85 mm to 1.10 mm, and the specific formation interval L2 of the adjacent second small protrusions 32 is 0.95 mm to 1. 20 mm, and a specific formation interval L3 between the first small protrusion 31 and the second small protrusion 32 is 0.75 mm to 1.00 mm.

The first small protrusion 31 has a substantially similar shape larger than the second small protrusion 32.
As shown in FIG. 4, a predetermined formation is achieved by arranging a row of small second projections 32 between rows in which a plurality of large first projections 31 are linearly arranged. The number of small protrusions per unit area can be increased while securing the interval. That is, if only the first small protrusions 31 having a large shape are formed at a predetermined interval, the number of small protrusions per unit area is reduced, but the second small protrusions 32 having a small shape are formed. By mixing, it is possible to increase the number of small protrusions per unit area while keeping the formation interval of the small protrusions 31 and 32 within a predetermined range. When the number of small protrusions per unit area is large, the number of small protrusions that hit the foot of the bather also increases, improving the slip resistance of the floor sheet and reducing the pressure applied to the sole from the tip of each small protrusion. Therefore, the pain resistance of the floor sheet is also improved.

The planar shape of the first and second small protrusions 32 is not particularly limited, but is preferably a substantially planar shape from the viewpoint of anti-slip property, anti-stress property, and antifouling property.
Further, the three-dimensional shape of each of the small protrusions 31 and 32 is not particularly limited. 3 and 3, each of the small protrusions 31 and 32 includes an upright peripheral surface 311 and 321 rising upward from the surface 2a of the large protrusion 2, and the upright peripheral surface 311, respectively. And projecting top surfaces 312 and 322 connected to the upper end of 321.
Preferably, the protruding top surfaces 312 and 322 are flat surfaces (also referred to as horizontal surfaces).

  The cross-sectional shape of the first and second small protrusions 31 and 32 is an inverted saddle shape. Specifically, the upright circumferential surfaces 311 and 321 of the small protrusions 31 and 32 are raised at an obtuse angle with respect to the surface 2 a of the large protrusion 2. The angle formed between the upright circumferential surfaces 311 and 321 of the small protrusions 31 and 32 and the surface 2a of the large protrusion 2 is not particularly limited as long as it is an obtuse angle. On the other hand, if it is too close to 180 degrees, the protruding portions (small protrusions 31 and 32) cannot be formed. From this viewpoint, the angle formed is preferably 105 degrees to 135 degrees, and more preferably 115 degrees to 125 degrees.

Boundary portions 311a and 321a between the rising peripheral surfaces 311 and 321 of the first and second small protrusions 31 and 32 and the surface 2a of the large protrusion 2 are rounded. This chamfering means that the boundary portions 311a and 321a do not have a clear boundary line, and the standing peripheral surfaces 311 and 321 and the surface 2a of the large protrusion 2 are continuous with a gentle curve.
Since the boundary portions 311a and 321a between the standing circumferential surfaces 311 and 321 and the surface 2a of the large protrusion 2 are chamfered in this way, the boundary portions 311a and 321a are not easily contaminated, and the boundary portions thereof. Since the tip of the brush and the sponge easily reach 311a and 321a, even when dirt is attached to the boundary portions 311a and 321a, it can be easily removed.

Further, the boundary portions 311b and 321b between the rising peripheral surfaces 311 and 321 and the protruding top surfaces 312 and 322 of the first and second small protrusions 31 and 32 are also rounded. This chamfering means that the boundary portions 311b and 321b do not have a clear boundary line, and the standing peripheral surfaces 311 and 321 and the projecting top surfaces 312 and 322 are continuous with gentle curves.
Since the boundary portions 311b and 321b between the standing peripheral surfaces 311 and 321 and the projecting top surfaces 312 and 322 are rounded in this way, even if the bather rides on the small protrusions 31 and 32, the corners do not hit, so pain It becomes difficult to feel.
As described above, each boundary portion does not have a clear boundary line, but in FIGS. 3 and 4, it is necessary to indicate the arrangement of the small protrusions 31 and 32. Boundaries 311a and 321a between the surfaces 311 and 321 and the surface 2a of the large protrusion 2 are indicated by solid lines.

As described above, the bathroom floor sheet of the present invention has a protrusion height of 0.09 mm to 0.20 mm, a maximum width of 0.40 mm to 1.20 mm, and a formation interval on the surface 2 a of the large protrusion 2. Since the plurality of small protrusions 31 and 32 having a thickness of 0.75 mm to 1.20 mm are formed, the slip resistance, the pain resistance, and the antifouling property are excellent.
Moreover, since the floor sheet for bathrooms of this invention is excellent also in drainage, especially adhesion of dirt and scale can be prevented. Furthermore, the bathroom floor sheet of the present invention can be easily removed using a cleaning tool such as a brush or a sponge even when the dirt is attached.

  Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples. However, the present invention is not limited to the following examples.

[Example 1]
(Production of sheet body)
A sheet body having a five-layer structure in which a surface layer 91, an intermediate layer 92, a first foamed layer 93, a reinforcing layer 94, and a second foamed layer 95 are laminated as shown in FIG. 6 was used.
Polyvinyl chloride was used as the material for forming the surface layer, the intermediate layer, the first foam layer, and the second foam layer, and a glass mat was used as the reinforcing layer. These materials were superposed and heated to about 180 ° C. to gel the polyvinyl chloride, thereby producing a sheet body.
The thickness of the surface layer is about 0.4 mm, the thickness of the intermediate layer is about 0.2 mm, the thickness of the first foam layer is about 0.9 mm, the thickness of the reinforcing layer is about 0.2 mm, and the second foam. The thickness of the layer was about 1.8 mm, the expansion ratio of the first foam layer was about 2.5 times, and the expansion ratio of the second foam layer was about 2.5 times.

(Formation of irregularities)
A plurality of large protrusions 2 (details such as dimensions are as follows) were formed on the surface of the surface of the sheet body by using an embossing roller and repeating the arrangement pattern shown in FIG. A plurality of first small protrusions 31 and second small protrusions 32 (details of dimensions and the like are as follows) are formed on the surface 2a of the large protrusion 2 in the pattern shown in FIG.
The size of the small protrusions and the distance between the small protrusions were measured using a microscope (trade name “VC7700” manufactured by OMRON Corporation).
In FIGS. 1 and 4, the large protrusions produced in Example 1, the arrangement pattern thereof, the first small protrusions, and the second small protrusions are illustrated as they are.

The long side of the large protrusion was about 19.2 mm, the short side of the large protrusion was about 6.4 mm, and the protruding height of the large protrusion was about 0.2 mm.
Each of the first small protrusion and the second small protrusion has a circular planar shape, and a three-dimensionally rounded corner shape (a protruding top surface is a flat surface).
The diameter of the first small protrusion is 0.55 mm, the protruding height of the first small protrusion is 0.15 mm, the diameter of the second small protrusion is 0.45 mm, and the protruding height of the second small protrusion is 0. It was 10 mm.

The formation interval between adjacent first small protrusions (“L1” in FIG. 4 and Table 1) is 0.89 mm, and the formation interval between adjacent second small protrusions (the same “L2”) is 0.96 mm. The formation interval (the same “L3”) between the first small protrusion and the second small protrusion was 0.77 mm.
In addition, the width | variety of the 1st recessed part was about 0.5 mm, and the width | variety of the 2nd recessed part was about 2.3 mm.
Table 1 shows the average value of the diameter, which is the maximum width of the first small protrusion and the second small protrusion, the average value of the protrusion height, and the average value of the formation interval thereof. These average values are values obtained by rounding off the third decimal place.

[Examples 2 to 5 and Comparative Examples 1 to 3]
Examples 2 to 5 and Comparative Example were the same as Example 1 except that the size and formation interval of the first small protrusions and the second small protrusions of Example 1 were changed to the dimensions shown in Table 1. 1 to 3 floor sheets were prepared.

  The anti-slip property, anti-skin property and anti-stain property of the floor sheets of Examples 1 to 5 and Comparative Examples 1 to 3 were evaluated according to the following methods and standards, respectively. The results are also shown in Table 1.

(Anti-slip property)
After pouring soap water with a concentration of 0.3% on the surface of each floor sheet, the tester walked barefoot on this surface and evaluated whether or not it was slippery according to the following evaluation criteria.
A: It was very difficult to slip.
B: It was difficult to slip.
C: It was easy to slip.

(Pain-proof)
A tester puts knees on the surface of each floor sheet with bare skin, and the feel at that time was evaluated according to the following evaluation criteria. It should be noted that the feeling of touching the knee is used as the evaluation standard for pain prevention. As a result of the trial and error of the present inventors, it is known that the pain is most easily felt in the bathroom when the knee is touched with bare skin. This is because it was obtained.
A: It did not hurt at all.
B: Although it does not hurt, it felt a little uncomfortable.
C: It was painful.

(Anti-fouling property)
A pseudo-fouling agent mixed with red clay in the Kanto Loam layer was attached to the surface of each floor sheet, and each floor sheet was placed in an oven at 60 ° C. for 4 hours. Thereafter, the surface of the floor sheet was washed with a deck brush and a sponge wetted with water, and evaluated according to the following evaluation criteria.
A: Dirt was easily removed.
B: It took time, but the dirt could be removed.
C: Dirt was difficult to remove.

From the results of Comparative Examples 1 and 2, when the protrusion height of the small protrusion is 0.08 mm, the slip resistance is deteriorated, and when the protrusion height of the small protrusion is 0.23 mm, the pain resistance is deteriorated. It was. From the comparison between Examples 1 to 5 and Comparative Examples 1 and 2, if the protrusion height of the small protrusion is in the range of 0.09 mm to 0.20 mm, a floor sheet excellent in slip resistance and pain resistance can be provided. it is conceivable that.
From the result of Comparative Example 3, the antifouling property deteriorates when the formation interval of the small protrusions is 0.67 mm. On the other hand, from the result of Example 2, even if the formation interval of the small protrusions is relatively long, the anti-slip property And there was no effect on pain resistance. However, it is presumed that if the formation interval of the small protrusions is too long, the number of small protrusions per unit area is reduced and the slip resistance is deteriorated. From such a point, it is considered that a floor sheet excellent in slip resistance, pain resistance, and antifouling property can be provided if the formation interval of the small protrusions is 0.75 mm to 1.20 mm.

  The bathroom floor sheet of the present invention can be used as a flooring material for various bathrooms such as general houses, bath facilities such as public baths and hotels, and nursing facilities.

DESCRIPTION OF SYMBOLS 1 Sheet | seat main body 2 Large protrusion 31, 32 Small protrusion 311, 321 Standing peripheral surface 312, 322 Projection top surface 4 Groove 51, 52 Recess 10 Unit 11 First collective unit 12 Second collective unit

Claims (4)

A sheet main body, a plurality of large protrusions protruding upward from the surface of the sheet main body, and a plurality of small protrusions protruding upward from the surface of each large protrusion, the small protrusions, The area of the planar shape is smaller than the area of the planar shape of the large protrusion, and the plurality of small protrusions are arranged in parallel on the surface of the large protrusion with a predetermined interval,
The protrusion height of the small protrusion is 0.09 mm to 0.20 mm, the maximum width in the planar shape of the small protrusion is 0.40 mm to 1.20 mm, and the formation interval of the plurality of small protrusions is A floor sheet for a bathroom, which is 0.75 mm to 1.20 mm.   The small protrusion has an upright peripheral surface that rises obtusely from the surface of the large protrusion, and a protruding top surface that is connected to the upper end of the upright peripheral surface, and the upright periphery The bathroom floor sheet according to claim 1, wherein a boundary portion between a surface and a surface of the large protrusion and a boundary portion between the standing peripheral surface and the protruding top surface are chamfered. The plurality of small protrusions have a substantially circular planar shape,
The bathroom seat according to claim 1 or 2, wherein the plurality of large protrusions are formed in an arc shape in which a planar shape is rectangular and a surface shape in a cross section swells upward. A part or all of the plurality of large protrusions are arranged in parallel with the long sides thereof being substantially parallel, and a groove is formed between the long sides of the adjacent large protrusions, and the long sides are substantially omitted. A plurality of large protrusions arranged side by side in a parallel state as one unit, a plurality of the units are arranged in parallel in a predetermined pattern on the surface of the sheet body,
The bathroom floor sheet according to claim 3, wherein a recess deeper than the groove is formed between the adjacent units.

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