Antislip sheet and method for manufacturing the same

Abstract

To provide an antislip sheet having a large grip force so as to prevent a person from slipping, falling, and being injured when a person walks on a smooth concrete road surface wet with rainwater or when a person conducts a work on a bath floor.SOLUTION: An antislip sheet includes: a sheet material made of a soft resin; an antislip material made of ceramic particles fixed on the sheet material; a coating layer covering the sheet material and the antislip material and including a surface having an uneven shape on an opposite side to the sheet material side. The sheet material and the coating layer are preferably made of the same material.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an anti-slip sheet to be attached to, for example, the soles of shoes, and a method for producing the same. [Background technology]

[0002] It is preferable to wear shoes with anti-slip treatment to prevent injury when walking on a smooth concrete road surface wet with rainwater or when working in a kitchen where cooking oil is scattered. Also, when providing bathing assistance services in a bath at a nursing home or when surfers go surfing, it is preferable that the bath floor and surfboards are treated with anti-slip treatment.

[0003] Fig. 6 shows an example of a shoe sole that has been subjected to an anti-slip treatment, as described in Patent Document 1. A sole 10 having an anti-slip protrusion pattern is disclosed in which a pair of protrusion groups 14, each of which is made up of a first open protrusion 12 having a V-shaped ground contact surface 12a and a second open protrusion 13 having a V-shaped ground contact surface 13a that opens in the opposite direction to the first open protrusion 12, are repeatedly arranged. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2014-104286 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, the structure described in Patent Document 1, while it is believed that the contact area with the floor surface is reduced by devising a projection shape and the contact pressure is increased, which certainly improves the slip resistance, the contact with the floor surface is still based on surface contact. Therefore, even in a harsh environment where a lot of oil and the like is scattered, it is questionable whether it is possible to remove oil from the contact surface and exert gripping power, and there seems to be room for improvement. Furthermore, in the case of such a mesh structure, there is a concern that the function will be suddenly lost due to deformation, wear, and deterioration of the mesh.

[0006] It is also desirable for bath floors, which are often flooded, and surfboards to be provided with anti-slip surfaces with strong grip.

[0007] The present invention has been made in consideration of the above circumstances, and has an object to provide an anti-slip sheet with high gripping power and a method for manufacturing the same. [Means for solving the problem]

[0008] The above objectives are: A sheet material made of soft resin; an anti-slip material made of ceramic particles and fixed onto the sheet material; a coating layer that covers the sheet material and the anti-slip material and has an uneven surface on the side opposite to the sheet material; An anti-slip sheet having This is achieved by:

[0009] By placing an anti-slip material made of ceramic particles on the sheet material, the contact area with the floor material through the coating layer is reduced, resulting in a state close to point contact. This increases the contact pressure with the floor surface, making it possible to eliminate oil and other fluids from the contact surface, thereby ensuring grip and improving anti-slip properties.

[0010] In addition, the above objectives are: forming a sheet material from a soft resin; placing an anti-skid material comprising ceramic particles on the sheet material before the sheet material hardens; a step of forming a coating layer on the sheet material after the anti-slip material is positioned at a predetermined position on the sheet material to form an uneven shape on the surface opposite to the sheet material side; A method for producing an anti-slip sheet comprising the steps of: This is achieved by:

[0011] According to this manufacturing method, it is possible to reliably place an anti-slip material made of ceramic particles on the sheet material, making it possible to produce an anti-slip sheet in which the area of ​​contact with the floor material, etc. via the coating layer is reduced, resulting in a state close to point contact. Effect of the Invention

[0012] According to the present invention, an anti-slip sheet having a high gripping force and a method for producing the same can be obtained. [Brief description of the drawings]

[0013] [Figure 1] 1 is a cross-sectional view showing an anti-slip sheet according to an embodiment of the present invention. [Diagram 2] 1A to 1C are diagrams illustrating a method for producing an anti-slip sheet according to an embodiment of the present invention. [Diagram 3] 1 is a diagram showing a schematic diagram of an example in which an anti-slip sheet according to an embodiment of the present invention is applied to a shoe sole. [Figure 4] FIG. 1 is a schematic diagram showing an example in which an anti-slip sheet according to an embodiment of the present invention is applied to a surfboard. [Diagram 5] 1 is a diagram showing a schematic example of an anti-slip sheet according to an embodiment of the present invention applied to shoes for rock climbing. [Figure 6] FIG. 1 is a cross-sectional view showing an example of a conventional shoe sole. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 is a cross-sectional view showing an anti-slip sheet according to an embodiment of the present invention. As shown in FIG. 1, the anti-slip sheet 1 is composed of a sheet material 10, an anti-slip material 20, and a covering layer 30.

[0015] The sheet material 10 is a sheet-like member made of a soft resin having high flexibility and water resistance, preferably polyvinyl chloride resin, and has a bottom surface 12 and a top surface 14 .

[0016] The anti-slip material 20 is an amorphous particle made of ceramic particles, preferably white fused alumina (e.g. Fuji Random WA manufactured by Fuji Manufacturing Co., Ltd.). The particle size of the anti-slip material 20 (the length of one side of a square mesh of the smallest standard sieve through which the anti-slip material 20 can pass, or the diameter of a circular mesh, expressed in millimeters) is preferably in the range of 0.7 mm to 1.2 mm. The particle size of white fused alumina particles that have been commonly used in the past is about 0.27 mm, which is considerably larger than such general-purpose products.

[0017] As shown in the figure, the anti-slip materials 20 are preferably arranged on the sheet material 10 at intervals from each other in the horizontal direction (left-right direction and the direction penetrating the paper in FIG. 1). However, it does not matter if the end of one anti-slip material 20 abuts on the other anti-slip material 20 in the horizontal direction. However, it is preferable that the anti-slip materials 20 are arranged so as not to overlap each other in the thickness direction of the anti-slip sheet 1 (up-down direction in FIG. 1). This is because the anti-slip materials 20 are held firmly in a predetermined position on the sheet material 10, so that the sheet material 10 exerts a gripping force. The anti-slip materials 20 are fixed to the sheet material 10 by being arranged in a predetermined position on the upper surface 14 of the sheet material 10 before the molten sheet material 10 solidifies.

[0018] The anti-slip material 20 fixed to the upper surface 14 of the sheet material 10 is covered from above with a covering layer 30. As a result, the anti-slip material 20 is surrounded by the sheet material 10 and the covering layer 30, and is held in a predetermined position on the sheet material 10.

[0019] The covering layer 30 has a surface 32 that covers the anti-slip material 20, and reduces damage caused by the anti-slip material 20 to the floor surface and human skin. The covering layer 30 is preferably made of resin, and considering its affinity with the sheet material 10, it is preferably made of polyvinyl chloride resin, which is the same material as the sheet material 10. The thickness t of the covering layer 30 is preferably about 0.2 mm to 0.6 mm, which is thinner than the thickness T of the sheet material 10. Because the thickness t of the covering layer 30 is thin, the shape of the surface 32 of the covering layer 30 opposite the sheet material 10 has an irregular uneven shape that reflects the shape of the irregular anti-slip material 20.

[0020] (Manufacturing method) Next, a method for producing the anti-slip sheet 1 will be described with reference to FIG.

[0021] First, in the first step, as shown in FIG. 2(a), a flat sheet-shaped sheet material 10 is formed from molten soft resin.

[0022] 2(b), anti-slip material 20 is placed on top surface 14 of sheet material 10 while sheet material 10 is in a semi-molten state before it hardens. Because sheet material 10 is in a semi-molten state, anti-slip material 20 is held in a predetermined position on top surface 14 and does not sink to bottom surface 12 of sheet material 10. As sheet material 10 hardens, anti-slip material 20 is fixed to top surface 12 of sheet material 10.

[0023] In order to shorten the time required to make the anti-slip sheet, the inventors, through trial and error, tried a method of mixing the anti-slip material 20 into a molten soft resin and forming this mixture into a sheet. However, it was found that this method caused the anti-slip material 20 to sink into the bottom surface 12 of the sheet material 10, resulting in a flat anti-slip sheet with no anti-slip material 20 protruding from the top surface. If the anti-slip material 20 does not protrude, the contact state is not close to point contact, so it is difficult to expect an improvement in grip strength.

[0024] Therefore, although it takes time and effort to prepare, it is preferable to first prepare the sheet material 10 as described above, and then place the anti-slip material 20 on the upper surface 14 of the sheet material 10 while the sheet material 10 is in a semi-molten state before it hardens.

[0025] Next, in the third step, as shown in FIG. 2(c), the anti-slip material 20 is positioned at a predetermined position on the sheet material 10, and then the anti-slip material 20 is coated with a molten resin to form a coating layer 30.

[0026] (Examples) Next, typical application examples of the anti-slip sheet 1 of the present invention will be described with reference to Figures 3 to 5. In Figures 3 to 5, the size of the anti-slip sheet 1 is exaggerated relative to the target to which it is applied.

[0027] 3 is a schematic diagram showing an example in which the anti-slip sheet 1 is applied to a shoe 40. The anti-slip sheet 1 is attached to a shoe sole 42 to provide an anti-slip function. The bottom surface 12 of the sheet material 10 of the anti-slip sheet 1 is attached to the shoe sole 42, and the surface 32 of the coating layer 30 having an uneven shape faces the floor surface.

[0028] The surface 32 of the covering layer 30 is an irregularly uneven surface reflecting the outer shape of the amorphous anti-slip material 20. Therefore, the contact portion 34 with the floor surface 50 is in a state closer to point contact than surface contact, and the contact area with the floor surface 50 is small. This increases the contact surface pressure of the contact portion 34, and by excluding fluids such as water from the contact portion 34, the grip force on the floor surface 50 is increased.

[0029] 4 is a schematic diagram showing an example in which the anti-slip sheet 1 is applied to, for example, the board surface 62 of a surfboard 60. The anti-slip sheet 1 is attached to the board surface 62 at a location appropriate for where a surfer (not shown) will stand, so as to provide an anti-slip function. The bottom surface 12 of the sheet material 10 of the anti-slip sheet 1 is attached to the board surface 62, and the top surface is made of a covering layer 30 having an uneven shape. Because the surface of the anti-slip sheet 1 is covered with the covering layer 30, it is able to provide an anti-slip function without injuring the feet, even when standing barefoot on the board surface 62 as shown in the figure.

[0030] Although not shown, similarly to FIG. 4, the anti-slip sheet 1 may be wrapped around the grip of a tennis racket or a golf club that comes into direct contact with the human skin to provide an anti-slip function.

[0031] 5 is a schematic diagram showing an example in which the anti-slip sheet 1 is applied to shoes 70 for rock climbing, such as reef fishing shoes for walking on rocky areas for reef fishing or rock climbing shoes for clambering over rocky areas for rock climbing. The anti-slip sheet 1 is attached to the sole 72 of the shoes 70 to perform an anti-slip function, but what differs from the case of FIG. 3 is that the surface of the covering layer 30 of the anti-slip sheet 1 is crushed, so that part of the anti-slip material 20 is exposed from the anti-slip sheet 1.

[0032] These shoes 70 are for walking on rocky surfaces, and there is no need to worry about damaging the rocks. For this reason, the white fused alumina particles are brought into direct contact with the rocks to increase the contact pressure, and the white fused alumina particles are brought into direct contact with the rocks to increase the frictional resistance, thereby providing an anti-slip function.

[0033] The applications of the anti-slip sheet of the present invention are not necessarily limited to the above-mentioned applications, but may be applied to any application requiring an anti-slip function. For example, it may be used as an anti-slip band that is wrapped around shoes.

[0034] Furthermore, the present invention is not limited to the above-described embodiment, and can be modified, altered, improved, etc. as appropriate. [Explanation of symbols]

[0035] 1 Anti-slip sheet 10 Sheet material 12 Bottom 14 Top side 20 Anti-slip material 30 Covering layer 32 Surface 40 Shoes 50 Floor 60 Surfboard 70 Shoes

Claims

1. A sheet material made of soft resin; an anti-slip material made of ceramic particles and fixed onto the sheet material; a coating layer that covers the sheet material and the anti-slip material and has an uneven surface on the side opposite to the sheet material; An anti-slip sheet having

2. The anti-slip sheet according to claim 1, wherein the sheet material and the covering layer are made of the same material.

3. 2. The anti-slip sheet according to claim 1, wherein the sheet material and the covering layer are made of polyvinyl chloride resin.

4. The anti-slip sheet according to claim 1, wherein the thickness of the coating layer is less than the thickness of the sheet material.

5. forming a sheet material from a soft resin; placing an anti-skid material comprising ceramic particles on the sheet material before the sheet material hardens; a step of forming a coating layer on the sheet material after the anti-slip material is positioned at a predetermined position on the sheet material to form an uneven shape on the surface opposite to the sheet material side; A method for producing an anti-slip sheet having the above structure.

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