Non-slip mat

Abstract

A non-slip mat (10) according to the present invention is provided with a mat main body (11), a plurality of protrusions (13) protruding from the surface of the mat main body (11), and a plurality of grooves (15) formed between the plurality of protrusions (13) and connected to the peripheral edge of the mat (10), the protrusions (13) having planar end surfaces (131) substantially parallel to the surface of the mat main body (11), and the outer shape of the end surfaces (131) having at least two recesses (133) in plan view, the outer peripheral length of the end surface (131) is equal to or greater than the circumferential length of the circumscribed circle (30) in the circumscribed circle (30) inscribed by two points on the outer peripheral line of the outer shape and two points located at the farthest positions from the two points.

Description

Technical Field

[0001] This invention relates to an anti-slip mat disposed on a floor surface that is wet with water or on a floor surface in water. Background Technology

[0002] In the past, slippery surfaces such as bathroom floors, bathtub bottoms, pool edges, pool bottoms, toilet floors, and kitchen floors could cause people to slip and fall. To prevent this, anti-slip mats were used. Anti-slip mats typically have multiple raised sections on the floor side for point or line contact with the wet floor surface, and grooves formed between the raised sections for drainage.

[0003] As anti-slip mats, there are known products with various planar shapes, cross-sectional shapes, or configuration patterns of the protrusions (see, for example, Patent Documents 1-5).

[0004] Prior art literature

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent Application Publication No. 10-99183

[0007] Patent Document 2: Japanese Patent Application Publication No. 2008-161363

[0008] Patent Document 3: Japanese Patent Application Publication No. 2011-46152

[0009] Patent Document 4: Japanese Patent Application Publication No. 2018-175668

[0010] Patent Document 5: Japanese Utility Model Registration No. 3226677 Summary of the Invention

[0011] The problem that the invention aims to solve

[0012] As mentioned above, the raised portion of the anti-slip surface in a known anti-slip mat has a drainage channel for draining water from the floor and a contact surface that contacts the floor. Although considerable effort has been put into the shape of the drainage channel and the contact surface, especially under conditions such as immersion in water or underwater, the raised portion may sometimes peel off from the contact surface, thus failing to fully exert its anti-slip effect. For example, in situations where elderly people or others use bathtubs, anti-slip mats are sometimes placed on the bottom of the bathtub beforehand. When taking the first step onto such an anti-slip mat, the load applied to the mat is relatively low, and the force applied to the mat is also weak, making it prone to lateral sliding. Furthermore, after bathing, when stepping out of the bathtub, the load from the foot remaining on the anti-slip mat is also relatively low, making the mat prone to lateral sliding again.

[0013] The objective of this invention is to provide an anti-slip mat that, when placed on a wet floor or a floor submerged in water, is unlikely to slip laterally, for example, even when a low load of less than 50 grams per specified area (20mm x 20mm) is applied to the surface of a mat of a specific size (50mm x 50mm) (the surface in contact with the human body).

[0014] Solution for solving the problem

[0015] The inventors of this application discovered that by configuring the protrusions of the anti-slip surface on the floor side of an anti-slip pad having a main body and a plurality of protrusions protruding from its surface in a specific configuration, the above-mentioned problem can be solved, and thus the present invention was completed.

[0016] The present invention is as follows.

[0017] [1] An anti-slip mat, wherein the anti-slip mat is a sheet-like anti-slip mat, characterized in that,

[0018] The above-mentioned anti-slip mats have the following features:

[0019] Main body of the pad;

[0020] Multiple protrusions protruding from the surface of the pad body portion; and

[0021] Multiple grooves are formed between the aforementioned protrusions and are connected to the peripheral ends of the pad.

[0022] The aforementioned protrusion has an end face with a plane that is substantially parallel to the surface of the aforementioned pad body. When viewed from above, the shape of the aforementioned end face has at least two recesses and is recessed into the circumcircle inscribed by two points on the outer periphery of the aforementioned shape, which are located at the points furthest apart from each other. The outer periphery length of the aforementioned end face is greater than or equal to the circumference length of the aforementioned circumcircle.

[0023] [2] The anti-slip mat as described in [1] is characterized in that, when viewed from the side, the outer periphery of the protrusion extending from the center of the end face and then toward the main body of the mat is provided with a corner, and the shape of the corner is formed to be approximately a rounded shape with a radius of 0.5 mm or less.

[0024] [3] The anti-slip mat as described in [1] or [2] is characterized in that the outer shape of the end face has a shape or a modified shape of which multiple patterns are moved in the rotational direction and overlapped to form the recess based on the center of the circumcircle, and the patterns are at least one pattern selected from polygons, circles and ellipses.

[0025] [4] The anti-slip mat as described in any one of [1] to [3] is characterized in that the area of ​​the end face is in the ratio of 40 to 95% to the area of ​​the circumscribed circle.

[0026] [5] The anti-slip mat as described in any one of [1] to [4] is characterized in that the total area of ​​the end faces of the protrusions is 40 to 90% of the total area of ​​the mat when viewed from above.

[0027] [6] The anti-slip mat as described in any one of [1] to [5] is characterized in that the total outer periphery length of the protrusions included in every 20mm × 20mm of the mat is 30mm or more.

[0028] [7] The anti-slip mat as described in any one of [1] to [6] is characterized in that the distance from the surface of the mat body to the end face is 0.3 mm or more.

[0029] [8] The anti-slip mat as described in any one of [1] to [7] is characterized in that the end face is disposed in contact with the floor surface of the bathroom or the bottom surface of the bathtub.

[0030] The effects of the invention

[0031] According to the present invention, anti-slip mats placed with their anti-slip surface (the surface facing the floor) towards a wet floor surface or a floor surface submerged in water are unlikely to slide laterally even under low load conditions. Therefore, they are suitable for installation on bathroom floors, bathtub bottoms, pool edges, pool bottoms, toilet floors, kitchen floors, etc. For example, when elderly people or others take a bath with an anti-slip mat submerged in the bathtub, the load applied to the anti-slip mat when taking the first step is relatively low compared to their body weight, and the force applied to the anti-slip mat is also weak. Therefore, the anti-slip mat is sometimes prone to lateral sliding. In addition, after bathing, when stepping out of the bathtub, the load from the foot remaining on the anti-slip mat is also relatively low, and the anti-slip mat is also prone to lateral sliding. However, by using the anti-slip mat of the present invention, such adverse situations can be suppressed. Attached Figure Description

[0032] Figure 1 (A) and (B) are schematic top views (partial enlarged views) illustrating the raised pattern of the anti-slip surface (the surface on the floor side) of the anti-slip mat used in Examples 1 and 3, respectively.

[0033] Figure 2 This is a schematic top view illustrating the convex end face of the anti-slip pad of the present invention.

[0034] Figure 3 This is a schematic top view illustrating the convex end face of the anti-slip pad of the present invention.

[0035] Figure 4 This is a schematic cross-sectional view showing the anti-slip mat of the present invention.

[0036] Figure 5 yes Figure 4 Enlarged view of the main part of the protrusion 13.

[0037] Figure 6 This is a schematic top view showing another example of the external shape of the protrusion of the anti-slip surface of the anti-slip mat of the invention.

[0038] Figure 7 (C) is a schematic top view (partial enlarged view) showing another example of the raised pattern of the anti-slip surface of the anti-slip pad of the present invention.

[0039] Figure 8 This is a schematic top view illustrating a portion (raised pattern) of the anti-slip surface of the anti-slip pad used in Comparative Example 2. Detailed Implementation

[0040] like Figure 1 as well as Figure 4 As shown, the anti-slip mat 10 of the present invention is characterized by comprising: a mat body portion 11; a plurality of protrusions 13 protruding from the surface of the mat body portion 11; and a plurality of grooves 15 formed between the plurality of protrusions 13 and connected to the peripheral end (not shown) of the anti-slip mat. The protrusions 13 have a protruding end face 131 on a plane substantially parallel to the surface of the mat body portion 11. In plan view, the protruding end face 131 has an outer shape with at least two recesses 133, and these recesses converge to two points located at the furthest points on the outer periphery of the outer shape of the protruding end face 131. Figure 2 In the circumcircle 30 inscribed in P1 and P2, the outer perimeter length of the convex end face 131 is greater than or equal to the circumference length of the circumcircle 30. Here, the outer perimeter line and the circumcircle 30 are references drawn for designing the external shape of the convex end face 131 of the present invention, and are not the shape of the convex end face 131 or the shape of the anti-slip pad 10 of the present invention.

[0041] In this specification, the surface of the anti-slip mat 10 with the protrusion 13 on the side of the mat body 11, i.e., the floor surface side, is referred to as the "anti-slip surface 111". Figure 4 ), and designate the other side of the pad body 11 as "second side 112" ( Figure 4 To explain, see section 2, 112, which is the side that the user touches when stepping on.

[0042] The pattern of the protrusions 13 in the anti-slip surface 111 of the anti-slip mat 10 of the present invention is, for example, made of... Figure 1Examples (A) and (B) illustrate that the pad 10 includes at least: a plurality of protrusions 13 extending from the pad body 11 in the anti-slip surface 111; and a groove 15 connected to the peripheral end of the anti-slip pad 10. Therefore, if the anti-slip pad 10 is placed on a wet floor surface or a floor surface submerged in water, the water between the floor surface abutting the protrusions 13 and the pad 10, i.e., the water contained in the groove 15, can be easily drained. Since the groove 15 is formed in the anti-slip surface 111 between the protrusions 13, it is part of the anti-slip pad 10.

[0043] In this invention, the protrusion 13 has a protruding end face 131 that is substantially parallel to the surface of the pad body portion 11. This structure will be described below. Figure 4 When viewing the anti-slip mat 10 of the present invention in such a cross-sectional view, if the surface of the mat body 11 is taken as the base line and the surface of the protruding end face 131 is taken as the first line, the base line and the first line are approximately parallel. Therefore, when the anti-slip mat 10 of the present invention is placed on a bathroom floor, bathtub bottom, or the like, the protruding end face 131 of the protrusion 13 of the anti-slip mat 10 can reliably abut against the floor or bottom surface, thus providing an anti-slip effect.

[0044] Additionally, the protrusion 13 has a protruding side 132 that protrudes from the pad body portion 11. Figure 4 It is connected to the convex end face 131. From the point of view of drainage, the convex side face 132 preferably protrudes in a generally vertical direction relative to the surface of the pad body 11.

[0045] For an anti-slip mat 10 placed with its convex end face 131 in contact with a wet floor surface or a floor surface submerged in water, such as an anti-slip mat 10 placed on the bottom of a bathtub, in a low-load state at the moment a user steps over the bathtub wall onto the anti-slip mat 10 and applies force to the foot on the mat to maintain balance, from the user's perspective, a force is applied to the anti-slip mat 10 in the direction of the foot being placed down. From the perspective of the anti-slip mat 10, a force offset in the direction away from the user, i.e., a lateral sliding force, is applied to the anti-slip mat 10. Due to friction with the floor surface, the convex end face 131 applies stress to the convex part 13 and the convex end face 131 to counteract the lateral sliding force. Here, for example, when the shape of the protruding end face 131 is circular when viewed from above (the so-called protrusion 13 is a cylindrical protrusion), the maximum lateral sliding stress is concentrated at point 1 at the end of the circular apex of the circular protruding end face 131 in the sliding direction. Therefore, the area of ​​the protruding end face 131 that plays an anti-slip role against this concentrated stress (hereinafter also referred to as the "anti-slip effective area") becomes substantially smaller, and sometimes it cannot withstand the concentrated stress. The contact surface of the pad (protruding end face 131) peels off from the floor surface, and the anti-slip pad 10 slides. On the other hand, the anti-slip pad 10 of the present invention, as Figure 2As shown, the convex end face 131 has the shape of multiple recesses 133 and multiple protrusions 134. Therefore, under the same low load and with the same sliding force applied, the stress is distributed to each of the multiple recesses 133 and protrusions 134 of the shape of the convex end face 131. As a result, the effective area for achieving a substantial anti-slip effect is increased. In other words, if the convex end face 131 is designed with multiple concave and convex shapes to lengthen the outer periphery of the protrusion 13, the stress applied to the protrusion 13 and the convex end face 131 due to the lateral sliding force is easily dispersed. As a result, the anti-slip effect of the anti-slip pad 10 of the present invention is improved because the effective anti-slip area is increased. Therefore, the anti-slip pad 10 of the present invention has the following characteristics regarding the area and outer periphery length related to the shape of the convex end face 131.

[0046] (1) such as Figure 2 As shown, when viewed from above, the convex end face 131 has at least two recesses 133, which are recessed into the circumcircle 30 inscribed by two points on the outer periphery of the convex end face 131, which are located at the two points furthest apart from each other. That is, the area of ​​the convex end face 131 is smaller than the area of ​​the circumcircle 30.

[0047] (2) The outer circumference length of the convex end face 131 is greater than or equal to the circumference length of the circumscribed circle 30.

[0048] Regarding the above (1), from the perspective of anti-slip effect, such as Figure 2 As shown, the number of recesses 133 in the outer shape of the convex end face 131 is preferably two or more, more preferably four or more. On the other hand, if the number of recesses 133 is too large, the outer shape of the convex end face 131 will be close to a circle, therefore, it is preferable to have 10 or less, more preferably 8 or less. The recesses 133 can be either acute angles or obtuse angles, or a combination thereof, when viewed from above. In addition, the circumcircle 30 inscribed by the two points (P1, P2) located at the farthest positions on the outer perimeter of the outer shape can be drawn. These two points are preferably at least a portion of the two protrusions 134 in the outer shape. In addition, in the present invention, all the vertices of the protrusions 134 visible on the outer shape of the convex end face 131 may be tangent to the circumcircle 30.

[0049] Here, the external shape of the two or more convex end faces 131 with concave portions 133 can be designed as a shape composed of multiple shapes moved in the rotational direction and overlapped about the center of the circumscribed circle 30 (see reference). Figure 6 (1) and (2) of, or their variant shapes, wherein the figure is at least one figure selected from polygons, circles and ellipses. Figure 6(1) is the following shape: using two squares with rounded corners that are inscribed in the circumcircle 31, with the center of the circumcircle 31 as the axis, one square is fixed, and the other square is moved 45 degrees and overlapped to form a composite shape. Additionally, Figure 6 (2) is the following shape: all four circles, whose radius is the diameter, are internally tangent to the circumcircle 32. The position of one circle is fixed, and the remaining three circles are rotated 90 degrees around the center of the circumcircle 32. Examples of deformed shapes include shapes obtained by combining multiple arbitrary shapes with irregularly shaped recesses 133, and shapes obtained by combining multiple polygons with rounded corners. Figure 2 When the shape of the protruding end face 131 made by such means is viewed from the center of the circumcircle 30, if it is designed to be symmetrical in the X and Y directions, the stress can be evenly distributed with respect to the direction of sliding force in all directions when viewed from above, thus achieving excellent anti-slip effect.

[0050] Regarding the above (2), it has the following characteristics: the outer perimeter length of the convex end face 131 is the same as or larger than the circumference length of the circumscribed circle 30. The outer perimeter length of the shape of the convex end face 131 is an element that directly affects the effective anti-slip area of ​​the anti-slip pad 10 of the present invention, and it is expected that the longer it is, the larger the effective anti-slip area will be. The convex portion 13 involved in the present invention has the following form: relative to the area of ​​the convex end face 131, the outer perimeter length of the shape of the convex end face 131 is larger than the "circumference length to area ratio" of the circumscribed circle 30. That is, compared with the circumscribed circle 30 (so-called cylindrical protrusion), the effective anti-slip area of ​​each convex portion 13 is larger, and an excellent anti-slip effect is achieved.

[0051] Furthermore, if the area of ​​the protruding end face 131 is in a high ratio to the area of ​​the circumscribed circle 30, the contact area (protruding end face 131) between one protrusion 13 and the floor surface increases. On the other hand, if the area of ​​the protruding end face 131 is in a low ratio, the outer perimeter length of the protruding end face 131 can be increased. From the viewpoint of simultaneously ensuring contact area and outer perimeter length, the ratio of the area of ​​the protruding end face 131 to the area of ​​the circumscribed circle 30 is preferably 40-95%, more preferably 50-80%. In addition, the diameter of the circumscribed circle 30 is preferably 2-100 mm, more preferably 3-80 mm, and even more preferably 4-50 mm. If the diameter is less than 2 mm, the area of ​​one protruding end face 131 becomes too small, and the sliding stress generated on one protruding end face 131 increases. On the other hand, if it exceeds 100 mm, the outer perimeter length of each protruding end face 131 area becomes shorter, and the anti-slip effect decreases.

[0052] Here, in Figure 2An example is shown of the external shape of the convex end face 131 that satisfies (1) and (2) above. Figure 2 This is a top view showing the external shape of the part having eight recesses 133. When P1 and P2 are determined by two points on the outer periphery of the external shape that are the furthest points from each other, and the circumscribed circle 30 is drawn as a dashed line, the other protrusions 134 on the outer periphery of the external shape, excluding P1 and P2, are tangent to or located inside the circumscribed circle 30. That is, the area of ​​the protruding end face 131 is smaller than the area of ​​the circumscribed circle 30. Furthermore, if the outer periphery length of the protruding end face 131 is measured, it is greater than or equal to the circumference length of the circumscribed circle 30.

[0053] Figure 3 The circle 40 is tangent to the outer perimeter of the convex end face 131 and is depicted in accordance with the shape. Figure 2 The inscribed circle 40 is concentric with the circumcircle. The inscribed circle 40 serves as a reference for designing the external shape of the convex end face 131 of the convex portion 13 involved in the design of the anti-slip mat 10 of the present invention, but is not the shape of the convex portion 13 or the convex end face 131 of the present invention. Furthermore, the point of tangency between the outer perimeter of the external shape of the convex end face 131 and the inscribed circle 40 can be one point or multiple points. Figure 3 The middle is 8 o'clock.

[0054] The size of the inscribed circle 40 is one factor determining the area of ​​the convex end face 131. Increasing the area of ​​the convex end face 131 increases the contact area between it and the floor surface it abuts, thus improving the anti-slip effect. On the other hand, if the inscribed circle 40 is too large, the shape of the convex end face 131 will be close to a circle. Therefore, from the viewpoint of reducing the anti-slip effect of the anti-slip mat 10 of the present invention, the diameter d of the inscribed circle 40 is preferably 1 / 2 or more, more preferably 2 / 3 or more, more preferably 3 / 4 or more, and particularly preferably 4 / 5 or more, relative to the diameter of the circumscribed circle 30.

[0055] In the anti-slip pad 10 of the present invention, from the viewpoint of increasing the area of ​​the convex end face 131, from the center of the outer shape of the convex end face 131 (in Figure 2 The shortest distance from the center of the circumscribed circle 30 to the recess 133 is preferably 1 mm or more, more preferably 1.3 mm or more. Furthermore, it is preferably 5 mm or less, more preferably 4 mm or less.

[0056] The outer periphery length of the protrusion end face 131 in one protrusion 13 is preferably 9 mm or more, more preferably 15 mm or more, and even more preferably 25 mm or more. In addition, it is preferably 250 mm or less, more preferably 150 mm or less.

[0057] In the anti-slip mat of the present invention, the total outer perimeter length of the protruding end faces 131 included in each 20mm×20mm mat 10 represents the number of protrusions 13 per unit area of ​​the anti-slip mat 10, also known as density, in the present invention characterized by a long outer perimeter length of one protruding end face 131. A longer outer perimeter length indicates a higher density. From the viewpoint of improving the anti-slip effect, the total outer perimeter length of the protruding end faces 131 included in each 20mm×20mm mat 10 is preferably 30mm or more, more preferably 50mm or more, and even more preferably 100mm or more, particularly preferably 120mm or more. From the viewpoint of drainage, the upper limit is preferably 500mm or less, more preferably 400mm or less, even more preferably 350mm or less, and particularly preferably 250mm or less.

[0058] The surface morphology of the side peripheral surface of the protrusion 13 is not particularly limited, and can be any of the following: flat, curved, or rough.

[0059] The arrangement pattern of the protrusions 13 in the anti-slip surface 111 of the anti-slip mat 10 of the present invention is not particularly limited when viewed from above, but it is preferred that the protrusions 13 are arranged in a grid or non-grid pattern so that the area ratio of the protruding end faces 131 of the protrusions 13 per unit area of ​​the anti-slip surface 111 is constant. In the case of a grid arrangement, if the centers of three adjacent protrusions 13 (e.g., Figure 2 The angle of the triangle formed by connecting the center of the circumcircle 30 and the center of the circumcircle 30 is preferably 30 to 90 degrees, more preferably about 60 degrees, so that the anti-slip effect of the present invention can be fully obtained.

[0060] The distance between the nearest protrusion 13 among adjacent protrusions 13 is preferably 0.5 mm or more, more preferably 0.7 mm or more, and even more preferably 1 mm or more. Furthermore, it is preferably 5 mm or less, more preferably 3 mm or less, and even more preferably 2 mm or less.

[0061] The preferred embodiment of the anti-slip mat 10 in this invention is as follows: Figure 4 As shown, when viewed from the side, the protrusion 13 has a structure with an outer periphery angle extending from the center of the protrusion end face 131 and then toward the pad body portion 11. That is, the protrusion 13 has a protrusion end face 131 and a protrusion side face 132, and the corner formed by the protrusion end face 131 and the protrusion side face 132 has a structure with a periphery angle of the protrusion end face 131 (hereinafter also referred to as "angled structure r"). The angled structure r is an important structure for ensuring reliable contact between the outer periphery of the protrusion end face 131 and the floor surface. Figure 5 As shown, when viewed from the side, the angular structure r is a portion of the circumference of the circle 50, which is depicted in a manner tangent to the end face 131 and the side face 132 of the convex portion, and the length of the angular structure r is the radius of the circle 50. Figure 5In the figure, the angle formed by the three points—the point of tangency between circle 50 and the end face 131 of the protrusion, the center of circle 50, and the point of tangency between circle 50 and the side face 132 of the protrusion—is shown as 90 degrees, but it may be larger or smaller than 90 degrees. The angled structure r is preferably 0.5 mm or less, more preferably 0.3 mm or less, and even more preferably 0.1 mm or less.

[0062] From the viewpoint that both the contact area of ​​the convex end face 131 of the anti-slip mat 10 with the floor surface and the area of ​​the groove portion 15 of the anti-slip mat 10 when viewed from above are ensured, the ratio of the total area of ​​the convex end face 131 of the convex portion 13 of the present invention to the overall area of ​​the anti-slip mat 10 when viewed from above is preferably 40 to 90%, more preferably 50 to 80%.

[0063] In addition, as another aspect of the anti-slip mat 10 of the present invention, such as Figure 7 As shown in (C), as Figure 1 The portion of the protrusion 13 shown in (B) is divided into protrusions 13A and 13B and a pad with a groove 16 therebetween, which facilitates the drainage of water between the floor surface and the protrusion end face 131.

[0064] Regarding the protrusion 13 of the anti-slip surface 111 of the anti-slip mat 10 of the present invention, from the viewpoint of facilitating water drainage between the floor surface and the protrusion end face 131, the distance between the surface of the mat body 11 and the protrusion end face 131 (hereinafter referred to as "protrusion height") is preferably 0.3 mm or more, more preferably 0.4 mm or more. On the other hand, if the protrusion height is too high, the protrusion 13 is prone to deformation when a load is applied to the mat body 11. For example, the protrusion 131 undergoes shear deformation in such a way that the anti-slip surface 111 is offset in the parallel direction relative to the protrusion end face 131. As a result, the stress applied to the protrusion end face 131 is concentrated in a specific part, and the protrusion end face 131 and the floor surface become easy to peel off. Therefore, from the viewpoint of anti-slip effect, the upper limit of the protrusion height is preferably 5 mm or less, more preferably 2 mm or less, and even more preferably 1 mm or less.

[0065] The anti-slip mat 10 of the present invention is not particularly limited in its constituent materials, but at least for the protrusions 13, from the viewpoint of ensuring reliable contact between the end face 131 of the protrusion and the surface of the floor it abuts, whether it is uneven or curved, the material is preferably an elastic resin material with a Shore A hardness in the range of 20 Point to 90 Point (more preferably 40 Point to 80 Point) as measured by JIS K 6253. The protrusions 13 may be made entirely of the same material or of multiple materials; for example, adjacent protrusions 13 may be made of different materials. Furthermore, adjacent protrusions 13 may have different Shore A hardnesses.

[0066] The aforementioned elastic resin material may be, for example, a thermoplastic elastomer or rubber, or a resin composition mainly composed of a mixture of them and a thermoplastic resin.

[0067] Examples of thermoplastic elastomers include olefin-based elastomers, styrene-based elastomers, diene-based elastomers, hydrogenated diene-based elastomers, chlorinated vinyl elastomers, chlorinated polyethylene elastomers, ethylene-vinyl acetate elastomers, polyester elastomers, polyamide elastomers, and fluorinated elastomers.

[0068] Examples of rubbers include ethylene-propylene-diene rubber, nitrile rubber, and butadiene rubber.

[0069] To adjust specific gravity, softness, elasticity, etc., the above-mentioned elastic resin materials may also contain reinforcing materials, inorganic fillers, softeners, weather-resistant additives, antioxidants, antistatic agents, flame retardants, mildew inhibitors, colorants, etc., as needed.

[0070] In this invention, the constituent materials of the pad body 11 and the protrusion 13 can be the same or different. Preferably, the pad body 11 and the protrusion 13 are an integral piece composed of a continuous phase of the same material.

[0071] In addition, the anti-slip mat of the present invention may be either a single-layer type made entirely of the same material or a laminated type in which different materials are overlapped in the thickness direction of the mat 10.

[0072] The surface morphology of the second surface 112 of the anti-slip mat 10 of the present invention is not particularly limited, and for example, it may have an uneven structure with a grid pattern, concentric circle pattern, dot pattern, or other designed pattern applied to it. Figure 4 The diagram shows a protrusion corresponding to design layer 18.

[0073] In this invention, the thickness of the pad 10, including the height of the protrusion, is ( Figure 4 The thickness of the pad 10 can be set to any value without affecting the effect of the present invention. However, if it is too thin, the strength against cracking or breakage of the pad itself will decrease. On the other hand, if it is too thick, the weight will increase, and the pad itself will be difficult to bend along the curved floor surface. From this point of view, the thickness of the pad 10 is preferably 1 mm or more, more preferably 1.5 mm or more, and even more preferably 2 mm or more. On the other hand, the upper limit of the thickness of the pad 10 is preferably 10 mm or less, more preferably 5 mm or less, and even more preferably 4 mm or less.

[0074] The planar dimensions of the anti-slip mat 10 of the present invention can be appropriately selected according to the application and are not particularly limited. For example, from the viewpoint of the weight of the mat 10, it can be set to a size of 20~100cm × 30~90cm.

[0075] As for the anti-slip mat 10 of the present invention, from the viewpoint of sinking in water, it is preferable to have a specific gravity greater than 1.0 as measured based on JIS K 7112. Furthermore, from the viewpoint of facilitating the handling and application of the mat 10, the upper limit is preferably 4 or less, more preferably 3 or less, and even more preferably 2.5 or less. If the specific gravity is within the preferred range, the structure and material of the anti-slip mat 10 can also be made of foam for the purpose of providing cushioning. Additionally, the main body portion 11 of the anti-slip mat 10 of the present invention may also have a through hole extending through its thickness direction.

[0076] There is no particular limitation on the method for manufacturing the anti-slip mat 10 of the present invention. When the main body 11 and the protrusion 13 are made of the same elastic resin material as described above, they can be manufactured by conventionally known resin molding methods such as injection molding, extrusion molding, and stamping.

[0077] The anti-slip mat of the present invention is suitable for application on bathroom floors, bathtub bottoms, pool edges, pool bottoms, toilet floors, kitchen floors, etc., which are prone to getting wet. It is not limited to the constituent materials and roughness of these floor surfaces and bottoms, and achieves an effect where lateral sliding is difficult to occur even when a low load of less than 50 grams per specified area (20mm × 20mm) is applied to the surface of the anti-slip mat, for example, a mat of a specific size (50mm × 50mm), placed along the wet floor surface or bottom surface.

[0078] According to the present invention, for example, when elderly people or others use a bathtub with an anti-slip mat placed on the bottom, the load applied to the anti-slip mat when taking the first step onto such an anti-slip mat is relatively low compared to their body weight, and the force of pressing down on the anti-slip mat is also weak. Therefore, the anti-slip mat is sometimes prone to lateral sliding. In addition, after bathing, when stepping out of the bathtub with one foot, the load from the foot left on the anti-slip mat is also low. Similarly, the anti-slip mat is sometimes prone to lateral sliding. However, if the anti-slip mat of the present invention is used, such adverse conditions can be suppressed.

[0079] Example

[0080] The present invention will now be described in detail based on embodiments, but the present invention is not limited to these embodiments.

[0081] 1. Molding materials for anti-slip mats

[0082] Thermoplastic styrene-based elastomer composition was used, with a Shore A hardness of 60 determined based on JIS K 6253 and a specific gravity of 1.7 determined based on JIS K 7112.

[0083] 2. Manufacturing and evaluation of anti-slip mats

[0084] Using the injection molding mold (demolding angle of protrusion 13: 2 degrees) of the protrusion 13 described in Examples 1-3 and Comparative Examples 1-2, the above-mentioned thermoplastic styrene elastomer was injection molded to manufacture test pieces (size: width 50mm × length 50mm, thickness of pad body: 4mm), and then a sliding test was performed.

[0085] Example 1

[0086] Manufacturing with Figure 1 The test piece of the protrusion 13 of the pattern shown in (A). The external shape of the protrusion end face 131 of the protrusion 13 is as follows: Figure 6 As shown in (1), two squares with rounded corners, inscribed in the circumcircle 31, are used. One square is fixed with the center of the circumcircle 31 as the axis, and the other square is moved by 45 degrees and overlapped to form a composite shape. The length of the outer perimeter of this shape is 37.9 mm, the diameter of the circumcircle 31 is 7.3 mm, the length of the corner structure r is 0.05 mm, and the height of the protrusion is 0.5 mm (refer to Table 1). The lines connecting the centers of the three adjacent protrusions 13 are all equilateral triangles of the same shape, and the shortest distance between the grooves of two adjacent protrusions is 1.5 mm.

[0087] The sliding test was conducted using the following method, and the results are recorded in Table 1.

[0088] Place room temperature water in a stainless steel pan and submerge the test piece with the convex part of the test piece as the bottom side of the pad. Next, place a 50-gram metal plate (size: 20mm×20mm) in the center of the test piece, pinch the center of one end of the test piece with your fingertips, and slowly pull it along the bottom of the pad to determine the slippage.

[0089] 〇: Strong resistance.

[0090] △: There is a feeling of resistance.

[0091] ×: Slides without resistance.

[0092] Example 2

[0093] Except that the length of the corner structure r is set to 0.4 mm, the test piece is manufactured in the same manner as in Example 1, and a sliding test is conducted (see Table 1).

[0094] Example 3

[0095] Manufacturing with Figure 1 The test piece with the protrusion 13 of the pattern shown in (B). The shape of the protrusion is obtained by overlapping four circles. Figure 6 As shown in (2), the shape is designed as follows: all four circles, with the radius of the circumcircle 32 as the diameter, are internally tangent to the circumcircle 32. The position of one circle is fixed, and the other three circles are rotated 90 degrees around the center of the circumcircle 32. The length of the outer perimeter (outer circumference) of this shape is 18.8 mm, the diameter of the circumcircle 32 is 6.0 mm, the length of the angled structure r is 0.05 mm, and the height of the protrusion is 0.5 mm (refer to Table 1). The lines connecting the centers of three adjacent protrusions 13 are all isosceles right triangles of the same shape, and the shortest distance between the grooves of two adjacent protrusions is 1.5 mm. Then, a sliding test is performed (refer to Table 1).

[0096] Comparative Example 1

[0097] A test piece was fabricated by patterning the protrusion 13 as a cylinder (diameter: 7.3 mm). The length of the angular structure r was 0.05 mm, and the height of the protrusion was 0.5 mm (refer to Table 1). The lines connecting the centers of three adjacent protrusions 13 were all equilateral triangles, and the shortest distance between the grooves of two adjacent protrusions was 1.5 mm. Then, a sliding test was performed (refer to Table 1).

[0098] Comparative Example 2

[0099] Manufacturing with Figure 8 The test piece 20 shows the pattern (the pattern of the tortoise shell pattern of Bishamonten). The length of the outer perimeter of this shape (outer circumference) is 37.2 mm, the diameter of the outer circle 33 of the shape is 12.5 mm, the length of the corner structure r is 0.05 mm, and the height of the protrusion is 0.5 mm (refer to Table 1). Then, a sliding test is performed (refer to Table 1).

[0100] [Table 1]

[0101]

[0102] In embodiments 1 to 3, the ratio of the outer perimeter of the convex end face to the circumference of the circumference of the convex part is greater than 1, and the ratio of the area of ​​the convex end face to the area of ​​the circumference of the convex part is less than 1.

[0103] Comparative Example 1 is a cylindrical protrusion, so the outer perimeter and area of ​​the convex end face are the same as the circumscribed circle.

[0104] Comparative Example 2 is a comparative example where the ratio of the outer perimeter of the convex end face to the circumference of the circumference of the convex part is less than 1.

[0105] Examples 1 and 3 achieved excellent results in the sliding test, and even in Example 2, where the length of the corner structure r was longer than that of Example 1, the sliding test also yielded good results.

[0106] On the other hand, in Comparative Examples 1 and 2, since the external shape of the protruding end face of the present invention was not satisfied, the results in the sliding test were worse than those in Examples 1 to 3. Industrial applicability

[0107] The anti-slip mat of the present invention is suitable for use on wet bathroom floors, bathtub bottoms, pool edges, pool bottoms, toilet floors, kitchen floors, etc.

[0108] Explanation of reference numerals in the attached figures

[0109] 10: Anti-slip mat

[0110] 111: Anti-slip surface

[0111] 112: Page 2

[0112] 11: Main body of the pad

[0113] 13: convex part

[0114] 131: convex end face

[0115] 132: Side of the convex part

[0116] 133: concave part

[0117] 15: Groove

[0118] 20: Anti-slip mat

[0119] 21: convex part

[0120] 23: Groove

Claims

1. An anti-slip mat, wherein the anti-slip mat is a sheet-like anti-slip mat, characterized in that, The above-mentioned anti-slip mats have the following features: Main body of the pad; Multiple protrusions protruding from the surface of the pad body portion; and Multiple grooves are formed between the aforementioned protrusions and are connected to the peripheral ends of the pad. The aforementioned protrusion has an end face with a plane that is substantially parallel to the surface of the aforementioned pad body. When viewed from above, the shape of the aforementioned end face has at least two recesses and is recessed into the circumcircle inscribed by two points on the outer periphery of the aforementioned shape, which are located at the points furthest apart from each other. The outer periphery length of the aforementioned end face is greater than or equal to the circumference length of the aforementioned circumcircle.

2. The anti-slip mat as described in claim 1, characterized in that, When viewed from the side, the outer periphery of the protrusion extending from the center of the end face and then toward the main body of the pad is provided with a corner, and the shape of the corner is formed to be approximately a rounded shape with a radius of 0.5 mm or less.

3. The anti-slip mat as described in claim 1 or 2, characterized in that, The aforementioned external shape of the end face has a shape or a modified shape of which multiple shapes are moved in a rotational direction and overlapped to form the aforementioned recess, with the center of the aforementioned circumcircle as a reference, and the aforementioned shapes are at least one shape selected from polygons, circles and ellipses.

4. The anti-slip mat as described in claim 1 or 2, characterized in that, The ratio of the area of ​​the aforementioned end face to the area of ​​the aforementioned circumscribed circle is 40-95%.

5. The anti-slip mat as described in claim 1 or 2, characterized in that, The total area of ​​the aforementioned end faces of the aforementioned protrusions is 40 to 90% of the total area of ​​the aforementioned pad when viewed from above.

6. The anti-slip mat as described in claim 1 or 2, characterized in that, The total outer perimeter length of the aforementioned end face included in each 20mm×20mm of the aforementioned pad is 30mm or more.

7. The anti-slip mat as described in claim 1 or 2, characterized in that, The distance from the surface of the main body of the pad to the end face is 0.3 mm or more.

8. The anti-slip mat as described in claim 1 or 2, characterized in that, The aforementioned end face is configured to contact the floor surface of the bathroom or the bottom surface of the bathtub.

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