Anti-slip flooring decorative sheets and anti-slip flooring decorative materials

Abstract

To provide a decorative sheet for an anti-skid floor which has both designability and anti-skid property, and a decorative material for an anti-skid floor which has the decorative sheet for the anti-skid floor.SOLUTION: A decorative sheet 1 for an anti-skid floor includes a base material sheet 2, a printing layer 3, and a transparent thermoplastic resin layer 4, wherein at least one of a projection 5 and a recess 6 is formed on the transparent thermoplastic resin layer 4, in a pattern region B that is a region overlapping a region where a wood grain patter is printed of the printing layer 3 in plan view, of the transparent thermoplastic resin layer 4, regularly arranged projections 5b are formed, and a non-pattern region A that is a region overlapping a region where a wood grain pattern is not printed of the printing layer 3 in plan view, of the transparent thermoplastic resin layer 4, randomly arranged projections 5a are formed.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] This invention relates to a decorative sheet for anti-slip flooring and a decorative material for anti-slip flooring. [Background technology]

[0002] Conventional technologies related to decorative sheets include, for example, those described in Patent Documents 1 and 2. Conventional decorative sheets (especially those for anti-slip flooring) have been designed to provide anti-slip properties by adding irregularly placed protrusions, but many of these lack wood grain patterns or other aesthetic features, resulting in inferior design. Furthermore, simply forming a wood grain pattern embossed to match the irregularly arranged protrusions makes it difficult to impart anti-slip properties to the decorative sheet. Thus, there were few decorative sheets (especially decorative sheets for anti-slip floors) that possessed both aesthetic appeal and anti-slip properties. [Prior art documents] [Patent Documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2007-135482 [Patent Document 2] Japanese Patent Publication No. 2013-217066 [Overview of the project] [Problems that the invention aims to solve]

[0004] This invention has been made in view of the above circumstances, and aims to provide a decorative sheet for anti-slip floors that has both aesthetic appeal and anti-slip properties, and a decorative material for anti-slip floors equipped with the decorative sheet for anti-slip floors. [Means for solving the problem]

[0005] To solve the above problems, a decorative sheet for anti-slip floors according to one aspect of the present invention comprises a base sheet, a printed layer formed on the base sheet, and a resin layer formed on the printed layer, wherein at least one of convex portions and concave portions is formed on the resin layer, and in the area of ​​the resin layer that overlaps in plan view with the area where the pattern of the printed layer is printed, at least one of the regularly arranged convex portions and concave portions is formed, and in the area of ​​the resin layer that overlaps in plan view with the area where the pattern of the printed layer is not printed, at least one of the randomly arranged convex portions and concave portions is formed. Another embodiment of the present invention provides a decorative anti-slip flooring material characterized by laminating the anti-slip flooring decorative sheet described above onto a flooring base material. [Effects of the Invention]

[0006] According to one aspect of the present invention, it is possible to provide a decorative sheet for anti-slip floors that has both aesthetic appeal and anti-slip properties, and a decorative material for anti-slip floors equipped with the decorative sheet for anti-slip floors. [Brief explanation of the drawing]

[0007] [Figure 1] This is a schematic cross-sectional view showing an example of the configuration of the anti-slip floor decorative sheet 1 and anti-slip floor decorative material 10 according to an embodiment of the present invention. [Figure 2] This is a schematic enlarged plan view showing an example of the configuration of the anti-slip floor decorative sheet 1 and anti-slip floor decorative material 10 according to an embodiment of the present invention. [Figure 3] This is a schematic perspective view showing an example of the configuration of the anti-slip floor decorative sheet 1 and anti-slip floor decorative material 10 according to an embodiment of the present invention. [Figure 4] This is a schematic plan view showing an example of the configuration of randomly arranged protrusions provided in the anti-slip floor decorative sheet 1 and anti-slip floor decorative material 10 according to an embodiment of the present invention. [Figure 5] This is a schematic plan view showing an example of the configuration of regularly arranged protrusions provided in the anti-slip floor decorative sheet 1 and anti-slip floor decorative material 10 according to an embodiment of the present invention. [Figure 6]It is a cross-sectional view schematically showing a configuration example of an inclined portion provided in the anti-slip floor decorative sheet 1 and the anti-slip floor decorative material 10 according to an embodiment of the present invention. [Figure 7] It is a plan view schematically showing another configuration example (Modification 1) of the anti-slip floor decorative sheet 1 and the anti-slip floor decorative material 10 according to an embodiment of the present invention. [Figure 8] It is a plan view schematically showing another configuration example (Modification 2) of the anti-slip floor decorative sheet 1 and the anti-slip floor decorative material 10 according to an embodiment of the present invention.

Mode for Carrying Out the Invention

[0008] Hereinafter, embodiments of the present invention will be described with reference to the drawings. <Embodiment> FIGS. 1(a) and (b) are cross-sectional views schematically showing a configuration example of the anti-slip floor decorative sheet 1 and the anti-slip floor decorative material 10 according to an embodiment of the present invention. As shown in FIG. 1(a), the anti-slip floor decorative material 10 includes an anti-slip floor decorative sheet 1 and a floor base material 11. Further, the anti-slip floor decorative sheet 1 includes a base material sheet 2, a printing layer 3 formed on the base material sheet 2, a transparent thermoplastic resin layer (resin layer) 4 formed on the printing layer 3, and a top coat layer 7 formed on the transparent thermoplastic resin layer 4.

[0009] The anti-slip floor decorative sheet 1 has a plurality of convex portions 5 (5a, 5b, 5c) on its surface (the upper surface in FIG. 1), and the top coat layer 7 is provided on its surface. The top coat layer 7 enhances the weather resistance, scratch resistance, stain resistance, etc. of the anti-slip floor decorative sheet 1. Further, by attaching the back surface (the lower surface in FIG. 1) side of the anti-slip floor decorative sheet 1 to the floor base material 11, the anti-slip floor decorative material 10 is formed. As the floor base material 11, a South Sea plywood, a particle board, a medium density fiberboard (hereinafter referred to as MDF), or a general plywood defined in the Japanese Agricultural and Forestry Standards can be used. Further, a base material made of a wood powder-added olefin resin can also be used. The thickness of the floor base material 11 is preferably about 3 to 25 mm.

[0010] Figure 2 is a schematic enlarged plan view showing an example of the configuration of the anti-slip floor decorative sheet 1 and anti-slip floor decorative material 10 according to an embodiment of the present invention. Figure 3 is a schematic perspective view showing an example of the configuration of the anti-slip floor decorative sheet 1 and anti-slip floor decorative material 10 according to an embodiment of the present invention. As shown in Figures 2 and 3, in the transparent thermoplastic resin layer 4, in region A (hereinafter also simply referred to as "non-pattern region A") which overlaps with the area of ​​the printed layer 3 where the pattern is not printed in a plan view, a plurality of randomly arranged protrusions 5a are formed, and in the transparent thermoplastic resin layer 4, in region B (hereinafter also simply referred to as "pattern region B") which overlaps with the area of ​​the printed layer 3 where the pattern is printed in a plan view, a plurality of regularly arranged protrusions 5b are formed. In other words, in the non-pattern region A, a plurality of randomly arranged protrusions 5a are formed. In addition, in the pattern region B, a plurality of regularly arranged protrusions 5b are formed.

[0011] Figures 4(a) and 4(b) are schematic plan views showing examples of the configuration of randomly arranged protrusions provided on the anti-slip floor decorative sheet 1 and anti-slip floor decorative material 10 according to an embodiment of the present invention. As shown in Figure 4, the planar shape of each of the multiple protrusions 5a (hereinafter referred to as the planar shape) is rectangular (for example, a square), and their arrangement is random (i.e., an arrangement without regularity). By forming randomly arranged protrusions 5a in the non-patterned area A, anti-slip properties are improved for indoor use, such as when wearing socks or stockings, and unpleasant interference noises caused by rubbing are reduced.

[0012] The protrusions 5a can be arranged in a manner that avoids any regularity, for example, by randomizing them using random number calculations. Specifically, in the non-pattern area A, the protrusions 5a may be randomly arranged based on information calculated by random number calculations. Here, "random arrangement" means 1 cm 2 This refers to a state in which the convex portions 5a are arranged such that the variation in the average distance between the convex portions 5a formed on the surface (3σ: three times the standard deviation σ) is greater than 0.1 μm. The height of the protrusion 5a is preferably 20 μm or more and 80 μm or less. If the height of the protrusion 5a is less than 20 μm, the anti-slip performance will be poor, and if it is greater than 80 μm, the manufacturing process will be difficult, such as difficulty in forming the shape of the protrusion. Here, the height of the protrusion 5a is the height A from the bottom to the top of the protrusion 5a, as shown in Figure 1(b). This height A is also the height difference between adjacent protrusions 5 (5a) and recesses 6 among the irregularities formed on the surface of the transparent thermoplastic resin layer 4.

[0013] Furthermore, as shown in Figure 4(b), the outer diameter of the protrusion 5a is preferably within the range of 25 μm to 60 μm. More specifically, in a plan view, the length B of one side of the protrusion 5a (outer diameter of the protrusion 5a) is preferably 25 μm to 60 μm. If the length B of one side of the protrusion 5a is less than 25 μm, the anti-slip properties are poor, and if it is greater than 60 μm, the protrusion 5a becomes easily visible to the naked eye, which is undesirable in terms of design. Furthermore, the surface density of the protrusions 5a (i.e., the ratio of protrusions per unit area in a plan view) is preferably 0.05 or more and 0.5 or less. If this surface density is less than 0.05 or greater than 0.5, the anti-slip properties are poor. Note that if the planar shape of the protrusions 5a is square, the surface density of the protrusions 5a is n × B 2 / C 2 This can be expressed as follows: Here, C is the length of one side of a square arbitrarily defined in plan view, and n is the number of convex parts 5a contained in this square. Furthermore, the protrusion 5a is 1 mm 2 Preferably, the number of particles formed per unit is between 70 and 160, more preferably between 90 and 140, and even more preferably between 110 and 120. 1 mm 2 If the number of protrusions 5a is less than 70, the anti-slip properties are poor, and if it is more than 160, the protrusions 5a become easily visible to the naked eye, resulting in an undesirable design.

[0014] Figure 5 is a schematic plan view showing an example of the configuration of regularly arranged protrusions provided in the anti-slip floor decorative sheet 1 and anti-slip floor decorative material 10 according to an embodiment of the present invention. As shown in Figure 5, the planar shape of each of the multiple protrusions 5b is rectangular (for example, square), and their arrangement is a regular arrangement with equal intervals, such as a houndstooth pattern. By forming regularly arranged protrusions 5b in the pattern area B, a natural pattern (for example, a wood grain pattern) can be reproduced, that is, the design quality is enhanced, and the anti-slip properties are further improved.

[0015] The protrusions 5b only need to be arranged in a way that gives them regularity, for example, in a grid pattern. Here, "regular arrangement" means 1 cm 2 This refers to a state in which the convex portions 5b are arranged such that the variation in the average distance between the convex portions 5b formed on the surface (3σ: three times the standard deviation σ) is 0.1 μm or less. Similar to the protrusion 5a, the height of the protrusion 5b is preferably 20 μm or more and 80 μm or less. If the height of the protrusion 5b is less than 20 μm, the anti-slip performance will be poor, and if it is greater than 80 μm, the manufacturing process will be difficult, such as difficulty in forming the protrusion shape. Here, the height of the protrusion 5b is the height A from the bottom to the top of the protrusion 5b, as shown in Figure 1(b), similar to the height of the protrusion 5a. This height A is also the height difference between adjacent protrusions 5 (5b) and recesses 6 among the irregularities formed on the surface of the transparent thermoplastic resin layer 4.

[0016] Furthermore, as shown in Figure 5(b), the outer diameter of the protrusion 5b is preferably within the range of 25 μm to 60 μm, similar to the protrusion 5a. More specifically, in a plan view, the side length B (outer diameter of the protrusion 5b) of the protrusion 5b is preferably 25 μm to 60 μm. If the side length B of the protrusion 5b is less than 25 μm, the anti-slip properties are poor, and if it is greater than 60 μm, the protrusion 5a becomes easily visible to the naked eye, resulting in an undesirable design. Furthermore, the surface density of the protrusion 5b is preferably 0.05 or more and 0.5 or less, similar to the protrusion 5a. If this surface density is less than 0.05 or greater than 0.5, the anti-slip properties are poor. Note that if the planar shape of the protrusion 5b is square, the surface density of the protrusion 5b is n × B 2 / C2 It can be represented by. Here, C is the length of one side of an arbitrarily defined square in plan view, and n is the number of convex portions 5b included in this square. Also, like the convex portion 5a, the convex portion 5b is formed within a range of 70 or more and 160 or less per 1 mm 2 Preferably, it is formed within a range of 90 or more and 140 or less, more preferably within a range of 110 or more and 120 or less. 1 mm 2 If the number of convex portions 5b per 1 mm is less than 70, the anti-slip property is poor, and if it is more than 160, the convex portions 5b are easily visible to the naked eye and the design sense is not preferable.

[0017] FIG. 6 is a cross-sectional view schematically showing a configuration example of an inclined portion provided in the anti-slip floor decorative sheet 1 and the anti-slip floor decorative material 10 according to an embodiment of the present invention. As shown in FIG. 6, at least a part of the periphery of the pattern area B has one or more inclined convex portions 5c provided with an inclined surface S that inclines so that the height decreases as it moves away from the pattern area B. The inclination degree of this inclined surface S is preferably inclined so that the height decreases within a range of 0.10 μm or more and 10.0 μm or less, more preferably within a range of more preferably within a range of 0.1 μm or more and 5 μm or less, and even more preferably within a range of 0.1 μm or more and 0.3 μm or less, each time it is 1 μm away from the periphery of the pattern area B. If the inclination degree of the inclined surface S is within the above numerical range, a natural pattern (for example, a wood grain pattern) can be reproduced, that is, the design property is enhanced, and further the anti-slip property is improved. In addition, the anti-slip property assumed for indoor use such as socks and stockings is improved, and unpleasant interference sounds due to rubbing and the like are reduced. The planar shape of each of the plurality of inclined convex portions 5c is preferably rectangular (for example, square).

[0018] The anti-slip floor decorative sheet 1 is formed by providing a printing layer 3 on a base material sheet 2 to form a base material layer. Printing is well known. For example, a gravure printing method or the like can be used. The base sheet 2 can be made of, for example, polyvinyl chloride resin, acrylic resin, or polyolefin-based polypropylene resin or polyethylene resin. Among these, polyolefin-based thermoplastic resins are preferred in terms of environmental compatibility, processability, and cost. The grade and composition of the resin can also be selected considering ease of sheeting, printability, and suitability for bending.

[0019] A transparent thermoplastic resin layer 4 is provided on the printed layer 3, and a plurality of protrusions 5 (5a, 5b, 5c) are formed on its surface. The shape and size of each of the multiple protrusions 5a, 5b are, for example, identical to one another. The transparent thermoplastic resin layer 4 may be formed by laminating polypropylene films, or by forming the transparent thermoplastic resin layer 4 on the printed layer 3 using an extruder. The method for forming the protrusions 5 (5a, 5b, 5c) may be, for example, a method of forming an uneven shape on the surface of the transparent thermoplastic resin layer 4 by heating and pressurizing using an embossing die (so-called embossing). When the transparent thermoplastic resin layer 4 is formed using an extruder, the protrusions 5 (5a, 5b, 5c) can be formed on the surface of the transparent thermoplastic resin layer 4 immediately after extrusion using an embossing roll or the like.

[0020] A topcoat layer 7 is provided on the outermost surface of the anti-slip floor decorative sheet 1. By using a cross-linked resin such as a thermosetting resin, an ultraviolet-curing resin, or an electron beam-curing resin for the topcoat layer 7, the weather resistance, scratch resistance, and stain resistance of the anti-slip floor decorative sheet can be enhanced. These resins may be used individually or in mixtures. For example, a mixture of several of the above resins may be used as the topcoat layer 7, or one of the above resins may be mixed with another resin. These resins can be applied using a known coating machine and cured by heat, ultraviolet light, or electron beam irradiation according to the type of cross-linking. The shape of the protrusions 5 (5a, 5b, 5c) formed on the surface of the transparent thermoplastic resin layer 4 is reflected in the topcoat layer 7 formed on top of it, and protrusions are also formed on the surface of the topcoat layer 7.

[0021] <Effects of the Embodiment> Embodiments of the present invention provide the following effects (1) to (6). (1) In the transparent thermoplastic resin layer 4, randomly arranged protrusions 5a are formed in region A, which overlaps in a plan view with the area of ​​the printed layer 3 where the pattern is not printed, and in the transparent thermoplastic resin layer 4, regularly arranged protrusions 5b are formed in region B, which overlaps in a plan view with the area of ​​the printed layer 3 where the pattern is printed. This makes it possible to achieve excellent design and high slip resistance. Furthermore, with the above configuration, the stain resistance required for flooring can be maintained.

[0022] (2) The outer diameter B of the randomly arranged protrusions 5a is preferably within the range of 25 μm to 60 μm. This makes it possible to achieve even better design and high slip resistance. Furthermore, with the above configuration, the stain resistance required for flooring can be easily maintained.

[0023] (3) The randomly placed protrusions 5a are 1 mm 2 Preferably, the number of particles per surface is between 70 and 160. This allows for even better design aesthetics and even higher slip resistance. Furthermore, with the above configuration, the necessary stain resistance for a floor can be reliably maintained.

[0024] (4) Preferably, in the region A of the transparent thermoplastic resin layer 4 that overlaps in a plan view with the region of the printed layer 3 where the pattern is not printed, the protrusions 5a are randomly arranged based on information calculated by random number calculation. This makes it possible to achieve even better design and even higher anti-slip performance. Furthermore, with the above configuration, the stain resistance required for flooring can be easily maintained.

[0025] (5) Preferably, at least a portion of the transparent thermoplastic resin layer 4 around the region B that overlaps with the region of the printed layer 3 in a plan view, is formed with at least one of an inclined convex portion 5c having an inclined surface S that decreases in height as it moves away from the region B that overlaps with the region of the printed layer 3 in a plan view, and an inclined recess (not shown) having an inclined surface S that decreases in depth. This makes it possible to achieve even better design and even higher anti-slip performance. Furthermore, with the above configuration, the stain resistance required for a floor can be reliably maintained.

[0026] (6) Preferably, the inclined surface S is inclined such that, for every 1 μm distance from the periphery of region A, which overlaps with the area of ​​the printed pattern of the printed layer 3 of the transparent thermoplastic resin layer 4 in a plan view, the height decreases or increases by a range of 0.10 μm to 10 μm. This makes it possible to achieve even better design and even higher anti-slip performance. Furthermore, with the above configuration, the stain resistance required for a floor can be maintained.

[0027] <Example 1> The above embodiment described the case where the planar shape of the protrusions 5a and 5b is a square. However, in the present invention, the planar shape of the protrusions 5a and 5b is not limited to a square. The planar shape of the protrusions 5a and 5b may be a rectangle, a polygon other than a square (triangle, pentagon, hexagon, ...), or a cross shape. Below, Modification 1 will be described using protrusion 5a as an example. Note that protrusion 5b may take the same form as Modification 1 described below.

[0028] Figures 7(a) and (b) are schematic plan views showing another configuration example (modification 1) of the anti-slip floor decorative sheet 1 and anti-slip floor decorative material 10 according to the present invention. As shown in Figure 7(a), the planar shape of the randomly arranged protrusions 5a may be an equilateral triangle. As shown in Figure 7(b), the side length B of the equilateral triangle is preferably 25 μm or more and 60 μm or less. If the side length B is less than 25 μm, the anti-slip properties are poor, and if it is greater than 60 μm, the protrusions 5a become easily visible to the naked eye, which is undesirable in terms of design. Also, in this modified example 1, the surface density of the protrusions 5a (i.e., the ratio of protrusions per unit area in a planar view) is preferably 0.05 or more and 0.5 or less. If this surface density is less than 0.05 or greater than 0.5, the anti-slip properties are poor in both cases. When the planar shape of the protrusions 5a is an equilateral triangle, its surface density is n × (√3 / 4) × B 2 / C 2 This can be expressed as follows: Here, C is the length of one side of a square arbitrarily defined in plan view, and n is the number of convex parts 5a of the equilateral triangle contained in this square.

[0029] Furthermore, although not shown in the figures, in this modified example 1 as well, the height of the protrusion 5a is preferably 20 μm or more and 80 μm or less. If the height of the protrusion 5a is less than 20 μm, the anti-slip performance will be poor, and if it is greater than 80 μm, the manufacturing process will be difficult, such as difficulty in forming the shape of the protrusion. Modification 1 shown in Figure 7 also achieves the same effects as the embodiment described above.

[0030] <Modification 2> Furthermore, in the present invention, the planar shape of the protrusions 5a and 5b is not limited to a polygon, but may also be circular (such as a perfect circle or an ellipse). Below, Modification 2 will be described using protrusion 5a as an example. Note that protrusion 5b may take the same form as Modification 2 described below. Figures 8(a) and 8(b) are schematic plan views showing another configuration example (modification 2) of the anti-slip floor decorative sheet 1 and anti-slip floor decorative material 10 according to the present invention. As shown in Figure 8(a), the planar shape of the randomly arranged protrusions 5a may be a perfect circle. As shown in Figure 8(b), the diameter B of the perfect circle is preferably 25 μm or more and 60 μm or less. If the diameter B is less than 25 μm, the anti-slip properties are poor, and if it is greater than 60 μm, the protrusions 5a become easily visible to the naked eye, which is undesirable in terms of design. Also, in this modified example 2, the surface density of the protrusions 5a (i.e., the ratio of protrusions per unit area in a planar view) is preferably 0.05 or more and 0.5 or less. If this surface density is less than 0.05 or greater than 0.5, the anti-slip properties are poor in both cases. When the planar shape of the protrusions 5a is a perfect circle, its surface density is n × (π / 4) × B 2 / C 2 This can be expressed as follows: Here, C is the length of one side of a square arbitrarily defined in plan view, and n is the number of circular protrusions 5a contained within this square.

[0031] Furthermore, although not shown in the figures, in this modified example 2, the height of the protrusion 5a is preferably 20 μm or more and 80 μm or less. If the height of the protrusion 5a is less than 20 μm, the anti-slip performance is poor, and if it is greater than 80 μm, the manufacturing process becomes difficult, such as when it is difficult to form the shape of the protrusion. Modification 2 shown in Figure 8 also achieves the same effects as the embodiment described above.

[0032] <Variation 3> Furthermore, as shown in Figure 1, the above embodiment described the case where the cross-sectional shape of the protrusions 5a and 5b (hereinafter referred to as the cross-sectional shape) is rectangular (that is, a columnar shape with a constant width from the bottom to the top). However, in the present invention, the cross-sectional shape of the protrusions 5a and 5b is not limited to a rectangle. In the present invention, the cross-sectional shape of the protrusions 5a and 5b may be trapezoidal (that is, a columnar shape with a gradually decreasing width from the bottom to the top) or conical. Even with such a configuration, the same effects as in the above embodiment can be achieved.

[0033] <Modification 4> Furthermore, as shown in Figure 1, the above embodiment described a case in which the surface structure of the anti-slip floor decorative sheet 1 and the anti-slip floor decorative material 10 is provided with protrusions 5a and 5b. However, in the present invention, the surface structure of the anti-slip floor decorative sheet 1 and the anti-slip floor decorative material 10 is not limited to protrusions 5a and 5b. In the present invention, recesses (not shown) may be formed instead of protrusions 5a and 5b. That is, recesses may be formed in the transparent thermoplastic resin layer 4, and regularly arranged recesses may be formed in region B of the transparent thermoplastic resin layer 4 that overlaps in a plan view with the area where the pattern of the printed layer 3 is printed, while randomly arranged recesses may be formed in region A of the transparent thermoplastic resin layer 4 that overlaps in a plan view with the area where the pattern of the printed layer 3 is not printed. Even with such a configuration, the same effects as in the above embodiment can be achieved.

[0034] Of course, in the transparent thermoplastic resin layer 4, region B which overlaps in a plan view with the area where the pattern of the printed layer 3 is printed may have both regularly arranged recesses and protrusions, and in the transparent thermoplastic resin layer 4, region A which overlaps in a plan view with the area where the pattern of the printed layer 3 is not printed may have both randomly arranged recesses and protrusions. Even with such a configuration, the same effects as in the above embodiment will be achieved. Furthermore, in the transparent thermoplastic resin layer 4, the region B that overlaps with the printed area of ​​the printed layer 3 in a plan view may have regularly arranged recesses, and in the transparent thermoplastic resin layer 4, the region A that overlaps with the unprinted area of ​​the printed layer 3 in a plan view may have randomly arranged protrusions. Even with such a configuration, the same effects as in the above embodiment can be achieved.

[0035] Similarly, in the transparent thermoplastic resin layer 4, the region B that overlaps with the printed area of ​​the printed layer 3 in a plan view may have regularly arranged protrusions, while in the transparent thermoplastic resin layer 4, the region A that overlaps with the unprinted area of ​​the printed layer 3 in a plan view may have randomly arranged recesses. Even with such a configuration, the same effects as in the above embodiment can be achieved.

[0036] <Modification 5> Furthermore, as shown in Figure 6, the above embodiment described a case in which the surface structure of the anti-slip floor decorative sheet 1 and the anti-slip floor decorative material 10 is provided with inclined protrusions 5c. However, in the present invention, the surface structure of the anti-slip floor decorative sheet 1 and the anti-slip floor decorative material 10 is not limited to inclined protrusions 5c. In the present invention, inclined recesses (not shown) may be formed instead of inclined protrusions 5c. That is, at least a portion of the transparent thermoplastic resin layer 4 around the region B that overlaps with the region where the pattern of the printed layer 3 is printed in a plan view may be formed, and inclined recesses may be formed with inclined surfaces that become shallower as they move away from the region B that overlaps with the region where the pattern of the printed layer 3 is printed in a plan view. Even with such a configuration, the same effects as in the above embodiment will be achieved.

[0037] Of course, at least a portion of the transparent thermoplastic resin layer 4 around the region B that overlaps with the region B of the printed layer 3 in a plan view may have both an inclined recess with an inclined surface that becomes shallower as it moves away from the region B of the printed layer 3 in a plan view, and an inclined protrusion 5c with an inclined surface S that becomes lower as it moves away from the region B of the printed layer 3 in a plan view. Even with such a configuration, the same effects as in the above embodiment will be achieved.

[0038] [Examples] The following describes embodiments of the present invention, but the present invention is not limited to the following embodiments.

[0039] (Example 1) The anti-slip floor covering sheet was created using the following materials and procedure. A 60 μm thick pigment-blended random polypropylene sheet (manufactured by Riken Technos Co., Ltd.) was used as the polypropylene base layer (substrate sheet 2). Next, a printed layer (printed layer 3) with a wood grain pattern was formed on this polypropylene base layer using gravure printing with urethane ink (Laminar, manufactured by Toyo Ink Manufacturing Co., Ltd.). Next, a polypropylene clear layer (transparent thermoplastic resin layer 4) made of homopolypropylene resin (manufactured by Prime Polymer Co., Ltd.) was formed on this printed layer using an extruder, and at the same time as the extrusion, embossed parts (recessed parts 5 and recessed parts 6) were formed using an embossing plate. Finally, as a topcoat layer (topcoat layer 7), a UV-curable resin (urethane acrylate resin manufactured by DIC Graphics Co., Ltd.) was applied to a thickness of 10 μm, and the coating liquid was cured by UV irradiation with a metal halide lamp. In this way, the topcoat layer was formed.

[0040] Furthermore, in areas other than the wood grain pattern area (non-pattern area A, which is the area of ​​the transparent thermoplastic resin layer 4 that overlaps in plan view with the area of ​​the printed layer 3 where the wood grain pattern is not printed), square-shaped protrusions were randomly arranged in plan view. The outer diameter of these protrusions was set to be within the range of 25 μm to 60 μm. The protrusions were also set to 1 mm 2 100 pieces were formed per person. Furthermore, in the wood grain pattern area (the pattern area B, which is the area of ​​the transparent thermoplastic resin layer 4 that overlaps with the printed area of ​​the printed layer 3 in a plan view), cross-shaped recesses are regularly arranged in a plan view. In addition, inclined sections (inclined protrusions 5c) are provided around the wood grain pattern area. The inclined surface of the inclined sections (inclined protrusions 5c) is sloped such that the height decreases by 0.25 μm for every 1 μm distance from the periphery of the pattern area B. The depth of the embossed plate (height of the raised areas and depth of the recessed areas) was set to 50 μm. Thus, the anti-slip decorative sheet for floors (anti-slip decorative sheet 1) of Example 1 was formed.

[0041] (Example 2) The anti-slip decorative sheet for floors of Example 2 was formed in the same manner as in Example 1, except that square-shaped protrusions were regularly arranged in the wood grain pattern area when viewed from above. (Example 3) The anti-slip decorative sheet for floors of Example 3 was formed in the same manner as in Example 1, except that triangular recesses were regularly arranged in the wood grain pattern area when viewed from above. (Example 4) The anti-slip decorative sheet for floors of Example 4 was formed in the same manner as in Example 1, except that circular protrusions were regularly arranged in the wood grain pattern area when viewed from above. (Example 5) Except for setting the embossing depth to 70 μm, the same procedure as in Example 1 was used to form the anti-slip decorative sheet for floors of Example 5.

[0042] (Example 6) Except for setting the embossing depth to 30 μm, the same procedure as in Example 1 was followed to form the anti-slip decorative sheet for floors of Example 6. (Example 7) Except for not providing a sloping section around the wood grain pattern area, the anti-slip decorative sheet for floors of Example 7 was formed in the same manner as in Example 1. (Example 8) In the non-patterned area A, a protrusion of 1 mm 2 Except for forming 70 pieces per sheet, the same procedure as in Example 1 was used to form the anti-slip decorative sheet for floors of Example 8. (Example 9) In the non-patterned area A, a protrusion of 1 mm 2 Except for forming 160 pieces per unit, the same procedure as in Example 1 was followed to form the anti-slip floor decorative sheet of Example 9.

[0043] (Example 10) The inclined surface of the inclined portion (inclined protrusion 5c) is inclined such that its height decreases by 0.10 μm for every 1 μm distance from the periphery of the pattern area B, otherwise the same configuration as in Example 1 was used to form the anti-slip floor decorative sheet of Example 10. (Example 11) The inclined surface of the inclined portion (inclined protrusion 5c) is inclined such that its height decreases by 10 μm for every 1 μm distance from the periphery of the pattern area B, otherwise the same configuration as in Example 1 was used to form the anti-slip floor decorative sheet of Example 11.

[0044] (Comparative Example 1) Comparative Example 1, a decorative sheet for anti-slip flooring, was formed in the same manner as in Example 1, except that only the wood grain pattern area was formed using an embossed wood grain plate, and no protrusions or recesses were randomly placed in the areas outside the wood grain pattern area. (Comparative Example 2) The anti-slip decorative sheet for floors of Comparative Example 2 was formed in the same manner as in Example 1, except that a wood grain pattern area with regularly arranged protrusions or recesses was not formed, and only irregularly arranged protrusions were formed.

[0045] (Comparative Example 3) The anti-slip decorative sheet for floors of Comparative Example 3 was formed using the same method as Comparative Example 1, except that the embossing depth was set to 70 μm. (Comparative Example 4) The anti-slip decorative sheet for floors of Comparative Example 4 was formed using the same method as Comparative Example 2, except that the embossing depth was set to 70 μm. (Comparative Example 5) The anti-slip decorative sheet for floors of Comparative Example 5 was formed using the same method as Comparative Example 1, except that the embossing depth was set to 30 μm. (Comparative Example 6) The anti-slip decorative sheet for floors of Comparative Example 6 was formed using the same method as Comparative Example 2, except that the embossing depth was set to 30 μm.

[0046] <Evaluation Methods and Criteria> Each of the anti-slip decorative sheets for floors in the examples and comparative examples was applied to the surface of a 3mm thick MDF (hardwood) floor substrate (floor substrate 11) using a two-component aqueous emulsion adhesive ("Licabond" manufactured by Chuo Rika Kogyo Co., Ltd. (weight ratio BA-10L / BA-11B = 100:2.5)) at a wet state at a rate of 100g / m². 2 After coating, the materials were bonded together and cured for 24 hours to create a floor covering material (anti-slip floor covering material 10). In this embodiment, these floor covering materials were evaluated by the following method.

[0047] (1) Evaluation of design properties The aesthetic evaluation involved visually checking whether a wood grain pattern was formed and whether the wood grain pattern was prominent. If a wood grain pattern was formed, it was evaluated as "○" (pass), and if a wood grain pattern was not formed, it was evaluated as "×" (fail). Furthermore, cases where a wood grain pattern was formed and stood out were rated as "◎" (pass).

[0048] (2) Contamination assessment The contamination assessment was conducted using tests in accordance with the JAS Contamination A test. If there was no significant discoloration visible to the naked eye, it was evaluated as "○" (pass). If there was some remaining discoloration that was difficult to confirm with the naked eye but could be seen with a magnifying glass, it was evaluated as "△" (pass). If there was any remaining discoloration visible to the naked eye, it was evaluated as "×" (fail).

[0049] (3) Anti-slip performance evaluation The anti-slip performance was evaluated by testing in accordance with JIS-A1454, and the CSR value was determined. The evaluation criteria were as follows: a CSR value of 0.36 or higher was evaluated as "○" (pass), and a value of 0.35 or lower was evaluated as "×" (fail).

[0050] (4) Evaluation of how it feels underfoot The feel underfoot (just the right amount of slip resistance) was evaluated through sensory testing. The evaluation was conducted by 16 examiners. The evaluation criteria were as follows: if 0-3 people felt that the surface had a "good feel underfoot (just the right amount of slip resistance)," it was rated as "×" (fail); if 4-8 people felt this way, it was rated as "△" (pass); and if 9-16 people felt this way, it was rated as "○" (pass).

[0051] (5) Judgment The evaluation results described above were comprehensively assessed, and a combined overall evaluation of "〇" or "△" was considered a pass, while a combined overall evaluation of "×" was considered a fail. The evaluation results are shown in Table 1.

[0052] [Table 1]

[0053] The results in Table 1 demonstrate that the anti-slip decorative sheets for floors of Examples 1 to 11 and the decorative floor materials using them can enhance the aesthetic appeal without compromising anti-slip performance.

[0054] <Other Embodiments> The present invention is not limited to the embodiments, modifications, and examples described above. Based on the knowledge of those skilled in the art, design changes and other modifications can be made to the embodiments, modifications, and examples, and such modified embodiments are also included within the technical scope of the present invention.

[0055] Furthermore, for example, the present invention can take the following configuration. (1) Base sheet and A printed layer formed on the base sheet, The printed layer comprises a resin layer formed on the printed layer, At least one of a convex portion and a concave portion is formed in the resin layer. In the region of the resin layer that overlaps with the region on which the pattern of the printed layer is printed in a plan view, at least one of the regularly arranged protrusions and recesses is formed. A decorative sheet for anti-slip floors, characterized in that at least one of the randomly arranged protrusions and recesses is formed in the area of ​​the resin layer that overlaps in a plan view with the area of ​​the printed layer where the pattern is not printed. (2) The anti-slip decorative sheet for floors according to (1) above, characterized in that the outer diameter of the randomly arranged protrusions or the outer diameter of the recesses is within the range of 25 μm to 60 μm. (3) The randomly arranged protrusions or recesses are 1 mm 2 The anti-slip decorative sheet for floors according to (1) or (2) above, characterized in that it is formed in a range of 70 to 160 pieces per sheet. (4) The anti-slip decorative sheet for floors according to any one of (1) to (3) above, characterized in that in the region of the resin layer that overlaps in a plan view with the region where the pattern of the printed layer is not printed, at least one of the convex portion and the concave portion is randomly arranged based on information calculated by random number calculation. (5) The anti-slip decorative sheet for floors according to any one of the above (1) to (4), characterized in that the regularly arranged protrusions or recesses have one of the shapes of a cross shape, a square shape, a triangular shape, and a round shape. (6) The decorative sheet for anti-slip flooring according to any one of (1) to (5) above, characterized in that at least a portion of the resin layer around the area in a plan view that overlaps with the area in a plan view that has a pattern printed on it, is formed at least one of an inclined convex portion having an inclined surface that is inclined so as it moves away from the area in a plan view that overlaps with the area in a plan view that has a pattern printed on it, and an inclined recess having an inclined surface that is inclined so as it (7) The decorative sheet for anti-slip flooring according to (6) above, characterized in that the inclined surface is inclined such that the height decreases or increases by a range of 0.10 μm to 10 μm for every 1 μm distance from the periphery of the area of ​​the resin layer that overlaps with the area on which the pattern of the printed layer is printed in a plan view. (8) A decorative anti-slip flooring material obtained by laminating an anti-slip flooring decorative sheet described in any one of the above items (1) to (7) onto a flooring base material. [Explanation of Symbols]

[0056] 1. Anti-slip floor covering (an example of a floor covering) 2. Base sheet 3 printing layer 4 Transparent thermoplastic resin layer (resin layer) 5. Convex part 5a. Protrusion (Protrusion formed in the non-pattern area A) 5b. Protrusion (a protrusion formed in the pattern area B) 5c Inclined protrusion 6 recesses 7. Top coat layer 10. Anti-slip floor covering 11 Floor material A. Non-image area (area other than the image area) B. Image area

Claims

1. Base sheet and A printed layer formed on the base sheet, The printed layer comprises a resin layer formed on the printed layer, At least one of a convex portion and a concave portion is formed in the resin layer. In the region of the resin layer that overlaps with the region on which the pattern of the printed layer is printed in a plan view, at least one of the regularly arranged protrusions and recesses is formed. A decorative sheet for anti-slip floors, characterized in that at least one of the randomly arranged protrusions and recesses is formed in the area of ​​the resin layer that overlaps in a plan view with the area of ​​the printed layer where the pattern is not printed.

2. The decorative sheet for anti-slip flooring according to claim 1, characterized in that the outer diameter of the randomly arranged protrusions or the outer diameter of the recesses is within the range of 25 μm to 60 μm.

3. The randomly arranged protrusions or recesses are 1 mm ２ The anti-slip decorative sheet for floors according to claim 2, characterized in that it is formed in a range of 70 to 160 pieces per sheet.

4. The decorative sheet for anti-slip flooring according to claim 3, characterized in that in the area of ​​the resin layer that overlaps in a plan view with the area of ​​the printed layer where the pattern is not printed, at least one of the convex portion and the concave portion is randomly arranged based on information calculated by random number calculation.

5. The anti-slip decorative sheet for floors according to claim 4, characterized in that the regularly arranged protrusions or recesses have one of the following shapes: cross-shaped, square-shaped, triangular, or round.

6. The decorative sheet for anti-slip flooring according to claim 5, characterized in that at least a portion of the resin layer around the area in a plan view that overlaps with the area in a plan view that has a pattern printed on it, is formed at least one of an inclined convex portion having an inclined surface that is inclined so as it moves away from the area in a plan view that overlaps with the area in a plan view that has a pattern printed on it, and an inclined recess having an inclined surface that is inclined so as it

7. The decorative sheet for anti-slip floors according to claim 6, characterized in that the inclined surface is inclined such that the height decreases or increases by a range of 0.10 μm to 10 μm for every 1 μm distance from the periphery of the area of ​​the resin layer that overlaps with the area on which the pattern of the printed layer is printed in a plan view.

8. A decorative material for anti-slip floors, comprising a decorative sheet for anti-slip floors according to any one of claims 1 to 7, laminated onto a floor substrate.

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