JP2008161363A - Non-slip sheet for wet environment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a non-slip sheet usable as a slip prevention of cooking utensils such as a cutting board, a bathroom mat and the like used under wet environment. <P>SOLUTION: A plurality of projecting parts is formed on a sheet base body, the tips of the projecting parts are formed of a flexible elastomer resin and independently erected into columnar shape respectively; the crest of the projecting part is formed into a flat and smooth surface, and the crest surface and the projecting part side are edged clearly. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a non-slip sheet that can also be applied to a wet environment, for example, water that can be used as a non-slip material such as a cooking tool such as a cutting board used in a wet environment, a bathroom mat used in a wet environment, etc. The present invention relates to a non-slip sheet for a wet environment.

  As a conventional technique, for example, an anti-slip proposal has been proposed for a problem that a cutting board slips on a wet stainless steel cooking table. For example, a convex protrusion is formed on the bottom surface of the cutting board, and heat is applied to this. Cutting board with anti-slip bonded plastic elastic material (see Patent Document 1), or anti-slip sheet for cutting board made of rubber-like elastic material and having a concavo-convex pattern, sucker, etc. on its surface (see Patent Document 2) , Etc. are proposed.

  In the cutting board with anti-slip of Patent Document 1, the convex protrusion of anti-slip is formed on the bottom surface of the high-rigidity cutting board body. However, the effect of this type of protrusion is insufficient in a wet environment, When the cooking table is not flat, the contact area is reduced and the effect cannot be further exerted, and the use side of the general cutting board itself is only one side, which is unacceptable to the user. .

  In the anti-slip sheet for cutting board of Patent Document 2, since the anti-slip sheet separate from the cutting board is used under the cutting board, the flatness of the cooking table is allowed and the utilization of the cutting board is improved. However, even if a suction cup or the like is used as a slip stopper, the suction force in the vertical direction is excellent, but it is still slippery in the horizontal direction in a wet environment and the effect of the slip stopper is not sufficient.

  In this way, conventional countermeasures against slipping are generally dealt with by simply using rubber-like elastic materials or by simply providing irregularities on these surfaces, and these countermeasures are dry. Although it was effective in the environment, it was not sufficient in a wet environment. Therefore, it has been desired to develop a non-slip sheet having a sufficient anti-slip function not only in a dry environment but also in such a wet environment.

JP-T-2006-501017 JP 2005-021565 A

  Therefore, the present inventor has a sufficient anti-slip performance even in a wet environment, for example, a cooking utensil that is usually wet in the environment, or an anti-slip around a bathroom in a wet environment. As a result of diligent research on developing an anti-slip sheet that can be easily used by laying underneath, the conventional contact surface with a wet table, etc. can be obtained by providing a simple concavo-convex or sucker. The present invention has been completed by paying attention to the fact that the water film interposed in the film becomes a lubricant and a sufficient anti-slip effect is not obtained.

  Accordingly, an object of the present invention is to provide a non-slip sheet for a wet environment that has a sufficient anti-slip function not only in a dry environment but also in a wet environment.

  That is, the present invention is an anti-slip sheet in which a plurality of convex portions are formed on the surface of the sheet base, and the convex portions are formed of an elastomer resin having at least a tip that is independent of the surface of the sheet base. The top of the convex part has a top surface formed on a smooth surface, and the top surface and the side surface of the convex part are clearly angled, and static friction in a wet environment It is a non-slip sheet for a wet environment characterized by having a non-slip performance having a coefficient of 1 or more.

  The anti-slip sheet of the present invention has a sufficient anti-slip function even in a wet environment by forming a plurality of convex portions having such a shape on the surface of the sheet substrate. By interposing the non-slip sheet of the present invention between the stainless steel cooking table and the wet wet cutting board, it is possible to prevent the cutting board from slipping during the cooking operation.

  In the present invention, the convex portion formed on the surface of the sheet base has a plurality of convex portions standing in a columnar shape independently from the surface of the sheet base, so that the cutting board or the cooking table becomes flat. Even if it is chipped, the anti-slip sheet itself is deformed so that many independent convex parts can easily come into contact with the cutting board and the cooking table, and the load acting on the cutting board is cooked as stress by the convex part standing in a columnar shape. Effectively transmitted to the table, a pressing stress acts between the tip of the convex portion and the cooking table.

  The convex portion is formed of an elastomer resin having a flexible tip at least, and the top of the convex portion has a top surface formed on a smooth surface. The flexible elastomer resin at the tip of the part adheres closely to the surface of the cooking table. At this time, the top surface of the convex part formed on a smooth surface makes the water film interposed between the convex part and the cooking table closer to each other. In this state, the drainage is eliminated, and the tip of the convex portion and the surface of the cooking table are brought into a close contact state in a vacuum state, thereby providing anti-slip strength against horizontal stress acting on the cutting board.

  Furthermore, in the present invention, since the top surface of the convex portion and the side surface of the convex portion are clearly squared, when the water film is excluded by the top surface, The contour makes it easy to cut off the water film, prevents water from entering, effectively eliminates the water film interposed between the convex part and the cooking table, promotes close contact, and has a sharply contoured top surface Becomes a drag force against the stress in the horizontal direction and further improves the anti-slip effect.

  Further, the anti-slip sheet for the wet environment formed as described above preferably has an anti-slip performance having a static friction coefficient of 1 or more in the wet environment, and the static friction coefficient in the wet environment is 1 or more. With the anti-slip performance, it is possible to improve the workability, safety and the like by preventing slipping of articles used in a wet environment from the result of the anti-slip performance test. In addition, the higher the static friction coefficient in the wet environment, the higher the anti-slip performance, and more preferably, the static friction coefficient is 1.3 or more or 1.5 or more. The static friction coefficient in a wet environment is a static friction coefficient obtained by a test performed in accordance with JISK7125 (plastic-film and sheet-friction coefficient test method) as a test method. Here, since the static friction force increases with the time when the friction surface contacts, the contact time is defined as 30 seconds.

  In the present invention, the top surface of the convex portion is preferably formed as smooth as possible. For example, the top surface of the convex portion has a surface roughness (JISB0601) with an arithmetic average roughness Ra of 5 μm or less. For example, it may be 3 μm or less, more preferably 2 μm or less, or the top surface of the convex portion may be formed in a mirror surface so that the surface is glossy. . According to this, the flexible elastomer resin at the tip of the convex portion more completely drains away the water film interposed on the surface of the cooking table, and the tip of the convex portion and the surface of the cooking table can be brought into a more intimate contact state. The yield strength of the stop can be increased. On the other hand, when the top surface of the convex portion is not smooth, the water film interposed between the tip of the convex portion and the surface of the cooking table cannot be sufficiently removed, and the water film turns into a lubricant and prevents slipping. The effect of becomes insufficient.

  Furthermore, in the present invention, it is preferable that the top surface of the convex portion and the side surface of the convex portion are angled as clearly as possible for molding. The clearer the cornering, the higher the drag in the horizontal direction and the higher the anti-slip effect. If the corner is rounded due to insufficient cornering, the horizontal drag is insufficient. Therefore, the cornering of the top surface of the convex portion and the side surface of the convex portion can be exemplified by the shape of the corner portion being approximate to an R shape having a radius of 500 μm or less, preferably a radius of 300 μm or less, More preferably, a shape approximate to an R shape having a radius of 200 μm or less or a radius of 100 μm or less can be exemplified.

  Moreover, in this invention, it is preferable that the convex part is formed with the flexible elastomer resin at least the front-end | tip or the whole. Examples of the elastomer resin include elastomer resins such as styrene elastomer, polyurethane elastomer, polyester elastomer, polyamide elastomer, polyolefin elastomer, vinyl chloride elastomer, chlorinated polyethylene, silicon rubber, synthetic rubber, and natural rubber. It can be exemplified and can be used regardless of thermoplasticity or thermosetting. In particular, styrene-based, polyurethane-based, polyester-based, and polyolefin-based thermoplastic elastomer resins have good processability and are excellent in mechanical strength and wear resistance, and can be preferably applied.

  Moreover, since the elastomer resin which forms a convex-shaped part can improve anti-slip proof stress by having moderate adhesiveness, it is preferable to mix | blend an appropriate tackifier with elastomer resin. Examples of the tackifier include rosin, rosin derivatives, polyterpenes, terpene phenol resins, and other petroleum resins synthesized from petroleum fractions.

  The elastomer resin is preferably flexible, but if it is too soft, the yield strength at the time of anti-slip is reduced, and if it is too hard, the follow-up adhesion to unevenness such as a cooking table is reduced and the anti-slip effect is reduced. The hardness can be used in the range of 30 to 90 degrees (according to durometer A hardness JISK6253), and preferably a flexible elastomer resin of approximately 40 to 70 degrees can be exemplified.

  Here, regarding the shape of the convex portion, examples of the cross-sectional shape of the convex portion include a circle, an ellipse, a semicircle, a rectangle, a rectangle, a polygon, and a pattern. In consideration of application to a cooking table or the like that lacks flatness, it is preferable to have a cross-sectional shape that is independently independent of a cross-sectional shape that extends long in length, and each is independently independent. It is preferable that more convex portions are easily brought into contact with the cutting board and the cooking table by using the convex portions. Further, from the viewpoint of reducing the anti-slip directionality, it is possible to exemplify arranging a plurality of convex portions having a circular cross-sectional shape uniformly.

  The vertical cross-sectional shape of the convex portion can be exemplified by a vertical cross-sectional shape such as a rectangle, a square, a trapezoid, an arc shape, and a combination of these, and the load acting on the cutting board is effective as a stress on a cooking table. It is preferable that it is formed in a solid shape with a shape that can be easily transmitted. Further, the convex portion may have a vertical cross-sectional shape that approximately approximates a trapezoidal shape, and a lower bottom that is in contact with the sheet substrate may be formed larger than the upper bottom of the convex portion tip. According to the above, in a non-slip sheet used in a wet environment with a convex part on the surface, the convex part that becomes a blind spot during cleaning against the adhesion of dirt during use or the growth of bacteria, etc. The vicinity of the root can be easily cleaned, and its hygiene can be improved.

  Specifically, the vertical cross-sectional shape of these convex portions is a trapezoid that extends from the top toward the sheet base, a Mt. Fuji shape that extends in an arc shape from the top to the sheet base, or a rectangular shape near the top of the convex portion. And a shape combined with a trapezoid extending from here to the sheet base, and a vertical cross-sectional shape extending in a circular arc shape from the vicinity of the top of the convex portion to the sheet base. The entire shape portion can be illustrated as a vertical cross-sectional shape approximately approximating a trapezoidal shape, and the vertical bottom shape in which the lower bottom in contact with the sheet base is larger than the upper bottom of the convex portion tip, such as brush cleaning from the sheet surface, etc. Therefore, it is possible to easily clean the side surfaces of the convex portions and the root portions of the convex portions where dirt easily collects. In addition, the ratio of the size of the upper base and the lower base is exemplified to form the length of the lower base at a ratio of approximately 1 to 1.5 with respect to the length of the upper base in the longitudinal section at the center of the convex portion. it can.

  Furthermore, the height of the convex portion can be set within a range of about 0.1 to 5 mm from the sheet base. However, if the height is too low, it is not preferable to eliminate the water film at the convex portion. If the height is too high, it becomes difficult to clean the convex portion, and the deformation of the convex portion becomes large and the anti-skid strength is lost. Considering these, it can be exemplified that the height of the convex portion is formed in a range of approximately 0.1 to 3 mm from the surface of the sheet substrate. More preferably, a height of 0.3 to 2 mm can be exemplified, and the anti-slip proof strength is high and the convex portion and the surface of the sheet substrate can be excellently cleaned. The height of the convex portion is a vertical distance from the surface of the sheet base to the top surface of the convex portion.

Then, the convex portion may illustrate that the area of each top surface is uniformly arranged on the sheet substrate at the size of 1～900Mm ^2, preferably it can be exemplified the size of 1～400Mm ^2, the top If the area of the surface is too large, the stress per unit area with respect to the load from the upper direction will be small and it will be impossible to effectively eliminate the water film.If the area of the top surface is too small, it will be difficult to mold, and the convex part itself will be Due to the deformation, a preferable anti-slip effect cannot be obtained.

  Further, the total area of the top surface can be exemplified by a ratio of approximately 20 to 60%, preferably a ratio of 20 to 40%, based on the total area of the sheet substrate. A large number of convex portions can be brought into contact with a non-uniform surface such as a cooking table, and an effective anti-slip function can be functioned. If the formation ratio of the top surface is too low, the anti-slip function will not function effectively, and if the formation ratio of the top surface is too high, the convex portions will be dense and difficult to clean, making it unsanitary.

  Further, the convex portions as described above are formed on both surfaces of the sheet base and can be exemplified as being substantially symmetrical with respect to the sheet base. According to this, for example, between the cutting board and the cooking table, If it is laid and used, stress can be effectively transmitted to the convex portions on both sides, and slipping with respect to both the cutting board and the cooking table can be prevented. Incidentally, in the positional relationship of the convex portions formed on both surfaces of the sheet substrate, it is not necessarily required to be completely (100%) formed in a symmetrical relationship between both surfaces, and from the viewpoint of effectively transmitting stress, One convex portion and the other convex portion on both surfaces may be in a positional relationship in which the convex portions on both surfaces coincide with each other at a ratio of approximately 60% or more. Moreover, you may make it provide the convex part of a different shape on both surfaces.

  Further, these convex portions are preferably formed on a sheet-like sheet base as a whole. The sheet base may be an elastomer resin sheet base that is integrally formed simultaneously with the formation of the convex portion, or may be a sheet base made of an elastomer resin different from the convex portion. Further, the convex part of the elastomer resin may be formed on the sheet base made of another plastic, and the sheet base and the convex part are further made of another plastic, and the tip of the convex part is made the elastomer resin. Etc. can be exemplified.

  Further, the convex portion may be provided on one side of the sheet substrate, and may be an anti-slip sheet in which the other side is formed flat. In this case, the anti-slip sheet is adhered to the back surface of a cutting board or the like. Then, the cutting board may be prevented from slipping with the cooking table.

  Moreover, it is preferable to mix | blend an antibacterial agent with the elastomer resin of a convex-shaped part at least. The anti-slip sheet in a wet environment can be kept in a hygienic environment in which bacterial growth is suppressed. Moreover, it is preferable to mix | blend an antibacterial agent also in a sheet | seat base | substrate.

  Here, the sheet substrate may be a material having excellent water resistance, such as sheets of plastic or rubber, metal sheets, mesh sheets, woven sheets, and monolayers of these sheets. It may be possible to exemplify those obtained by combining or laminating these sheet materials. In the present invention, even if the sheet base and the convex part are integrally formed of the same material, the sheet base part excluding the convex part is referred to as a sheet base.

  And from the viewpoint of being used in a wet environment, the anti-slip sheet of the present invention is preferably provided with rigidity that can be stood and stored. According to this, the non-slip sheet integrally formed with a flexible elastomer resin is flexible and cannot be effectively drained and dried when it is stood up, but it must be hung and dried to dry. Since rigidity is imparted to the base body, it is easy to handle it, and can be drained and dried like a cutting board, which makes it easy to maintain the hygiene of the non-slip sheet.

  Therefore, in the present invention, as the sheet rigidity necessary for standing and storing the anti-slip sheet, the amount of self-weight deflection by the cantilever support is such that the self-weight deflection when the cantilever support length is 100 mm is 30 mm or less. Preferably, the sheet stiffness can be exemplified as a self-weight deflection of 20 mm or less. With such sheet stiffness, the anti-slip sheet after use and cleaning can be stood well against a wall, etc. Easy to dry and keep hygienic. In addition, the amount of natural deflection by cantilever support is the amount of natural sagging at the tip of the target sheet from the horizontal reference position when the target sheet with a width of 50 mm is cantilevered and fixed horizontally at a length of 100 mm. It is a measured value after 1 minute has passed since the support was fixed.

  In the anti-slip sheet of the present invention, at least the inside or the surface of the sheet base is provided with a rigidity higher than that of the elastomer resin that forms the convex portion so as to give rigidity that can be stood and stored. Examples of such plastics include polyethylene, ultrahigh molecular weight polyethylene, polypropylene, polyethylene terephthalate, acrylonitrile butadiene, urethane, polyvinyl chloride, and plastics such as elastomers having higher rigidity than the elastomer resin forming the convex portion. These are excellent in adhesiveness to the elastomer resin, and a film, a sheet, or the like made of these resins can be disposed on the sheet substrate to increase its rigidity.

  Moreover, it is preferable that the elastomer resin and / or the sheet substrate is colored, for example, blue. There are few blue foodstuffs, and it is easy to find out when a broken piece etc. mixes into foodstuffs.

  The anti-slip sheet for a wet environment of the present invention can be produced by a known plastic molding means such as plastic injection molding, press molding, extrusion molding, etc., which is molded using a mold having an appropriate shape.

  The anti-slip sheet for the wet environment of the present invention has sufficient anti-slip performance not only in a dry environment but also in a wet environment, and prevents slipping of articles used in the wet environment. Workability, hygiene, etc. can be improved.

  Hereinafter, preferred embodiments of the present invention will be specifically described based on examples shown in the accompanying drawings.

[First embodiment]
FIG. 1 is a view showing a first embodiment of a non-slip sheet for a wet environment according to the present invention.
Fig.1 (a) is a front view which shows the non-slip sheet | seat 10 for the water-wetting environment in the 1st Example. FIG. 1B is a top view showing a non-slip sheet 10 for a wet environment. FIG. 1C is a partially enlarged top view with a partial vertical section showing a non-slip sheet 10 for a wet environment. The anti-slip sheet 10 for a wet environment is integrally formed of a flexible elastomer resin 15, and a plurality of convex portions 12 are formed on the surface of the sheet base 11. The convex portion 12 is erected in a columnar shape independently from the surface of the sheet substrate 11, and the top of the convex portion 12 has a top surface 14 formed on a smooth surface. And the convex side surface 13 are clearly angled.

  The convex portion 12 is made of a thermoplastic styrene-based elastomer resin, is a cylindrical shape having a diameter of 5 mm and a height of 1 mm formed of a flexible elastomer resin 15 having a durometer A hardness of 53 degrees. It is formed in the longitudinal cross-sectional shape. The top surface 14 of the convex portion 12 is formed as a mirror-like smooth surface that is glossy. According to a surface roughness shape measuring instrument (Surfcom manufactured by Tokyo Seimitsu), the surface roughness Ra is 0.2 μm. It was. Further, the top surface 14 and the convex side surface 13 of the convex portion 12 are clearly angled, and according to the 50 times magnified image, the shape of the corner portion approximates an R shape with an approximate radius of about 80 μm. A vertical cross-sectional shape with a can be observed.

Further, the convex portions 12 are uniformly arranged with respect to the sheet base 11 having a thickness of 2 mm, and the convex portions 12 are formed on both surfaces of the sheet base 11 and are formed symmetrically with respect to the sheet base 11. ing. The area of the top surface 14 of the convex portion 12 is about 20 mm ² , and the total area of the top surface 14 on one side is approximately 35% of the total area of the sheet substrate.

[Second Embodiment]
Next, a second embodiment of the anti-slip sheet for a wet environment according to the present invention will be described. In the present embodiment, the same components as those shown in the first embodiment are designated by the same reference numerals and the description thereof is omitted.
FIG. 2 is a view showing a second embodiment of the anti-slip sheet for a wet environment according to the present invention.

  FIG. 2 is a view showing a non-slip sheet 20 for a wet environment in the second embodiment. FIG. 2A is a front view showing a non-slip sheet 20 for a wet environment. FIG. 2B is a top view showing the non-slip sheet 20 for a wet environment. FIG. 2 (c) is a partially enlarged top view with a partial vertical section showing a non-slip sheet 20 for a wet environment. The anti-slip sheet 20 for a water-wetting environment is integrally formed of a flexible elastomer resin 15 as a whole, and a plurality of convex portions 12 are formed on the surface of the sheet base 11. The convex portion 12 is erected in a column shape independently from the surface of the sheet substrate 11, and the top of the convex portion 12 has a top surface 14 formed on a smooth surface. And the convex side surface 13 are clearly angled. The non-slip sheet 20 for the wet environment of the second embodiment is different from the non-slip sheet 10 for the wet environment of the first embodiment only in the shape of the convex portion 12 except for the other. Is the same as in the first embodiment.

  The convex portion 12 of the non-slip sheet 20 for the wet environment of the second embodiment is a substantially cylindrical shape having a diameter of 5 mm and a height of 1 mm formed by a flexible elastomer resin 15, and has a circular cross-sectional shape. In addition, the vertical cross-sectional shape is formed in a shape combined with a trapezoid that is rectangular near the top of the convex portion and extends toward the sheet substrate, and the convex portion 12 is approximately approximate to a trapezoid as a whole. The lower bottom in contact with the sheet substrate is larger than the upper bottom at the tip of the convex portion and has a diameter of 6 mm.

  Further, the surface roughness of the top surface 14 of the convex portion 12 is a smooth surface having a surface roughness Ra of 1.7 μm. Further, the top surface 14 of the convex portion 12 and the side surface 13 of the convex portion 12 are formed. Is clearly squared as in the first embodiment.

[Third embodiment]
Next, a third embodiment of the non-slip sheet for a wet environment according to the present invention will be described. In the present embodiment, the same components as those shown in the first embodiment are designated by the same reference numerals and the description thereof is omitted.
3 and 4 are views showing a third embodiment of the anti-slip sheet for a wet environment according to the present invention.

  FIG. 3 is a view showing a non-slip sheet 30 for a wet environment in the third embodiment. FIG. 3A is a front view showing a non-slip sheet 30 for a wet environment. FIG. 3B is a top view showing the non-slip sheet 30 for a wet environment. FIG. 3C is a partially enlarged top view with a partial vertical section showing a non-slip sheet 30 for a wet environment. The anti-slip sheet 30 for a wet environment has a plurality of convex portions 12 formed of a flexible elastomer resin 15 on the surface of the sheet substrate 11. The convex portions 12 are erected in a columnar shape independently from the surface of the sheet substrate 11, and the top of the convex portions 12 is a smooth top surface 14 (surface roughness Ra is 3.6 μm). ) And the top surface 14 and the convex portion side surface 13 are clearly angled as in the first embodiment. The non-slip sheet 30 for the wet environment of the third embodiment is different from the non-slip sheet 20 for the wet environment of the second embodiment in that the shape of the convex portion 12 is different and the sheet base. 11 is the same as the second embodiment except that the configuration is different.

  The convex portion 12 of the non-slip sheet 30 for the wet environment of the third embodiment is a substantially cylindrical shape having a diameter of 5 mm and a height of 1 mm formed by a flexible elastomer resin 15, and has a circular cross-sectional shape. The vertical cross-sectional shape is rectangular in the vicinity of the top of the convex part, and is formed in a shape that expands in an arc shape from here to the sheet base, and the convex part 12 approximately approximates a trapezoid as a whole. It has a vertical cross-sectional shape, and the lower bottom contacting the sheet base is larger than the upper bottom of the tip of the convex part and is formed to have a diameter of 6 mm, so that the dirt near the base of the convex part 12 can be easily washed.

  Further, the non-slip sheet 30 for the wet environment of the third embodiment is provided with a rigidity capable of being stood and stored by disposing a sheet-like plastic 36 having a rigidity higher than that of the elastomer resin inside the sheet base 11. It is a thing. The plastic 36 disposed approximately at the center of the sheet base 11 having a total thickness of 2.6 mm is a plastic sheet having a thickness of 0.6 mm made of polypropylene resin.

  The anti-slip sheet 30 for a water-wetting environment has a sheet rigidity with a self-weight deflection at a length of 100 mm by cantilever support of 11 mm, and can be satisfactorily leaned against a wall or the like. Incidentally, when the thickness of the plastic 36 is 0.4 mm, the sheet rigidity is a rigidity that can be stood by its own weight deflection of 23 mm, and the sheet rigidity of the non-slip sheet 10 for the water-wetting environment of the first embodiment is as follows. The deflection due to its own weight was 72 mm, and it could not be stood against storage.

  FIG. 4 is a view showing a modification of the anti-slip sheet 30 for a wet environment in the third embodiment, and shows a first modification (FIG. 4A) and a second modification (FIG. 4B). ) And a third modified example (FIG. 4C).

  The slip-proof sheet 40 for a wet environment in the first modified example of FIG. 4A is configured by the same convex portion 12 as the slip-proof sheet 10 for a wet environment in the first embodiment. In the non-slip sheet 40 for a wet environment, a film-like plastic 46 having a rigidity higher than that of the flexible elastomer resin 15 is provided on both surfaces of the sheet base 11 on the surface of the sheet base 11 excluding the convex portion 12. Configured. The plastic 46 is a film having a thickness of 0.2 mm made of polypropylene resin, and is integrally heat-sealed simultaneously with the formation of the non-slip sheet 40 for a wet environment.

  Note that the non-slip sheet 40 for the wet environment of the first modified example has a sheet rigidity with a self-weight deflection of 2 mm at a length of 100 mm by cantilever support, and is satisfactorily leaned against a wall or the like. be able to. Further, since the sheet base 11 around the base of the convex portion 12 is formed of the plastic 46, it has a configuration in which the adhesion of dirt is small and the cleaning is easy.

  The anti-slip sheet 50 for the wet environment of the second modified example of FIG. 4B differs from the other embodiments in the shape of the convex portion 12, and the convex portion 12 has an arc shape from the top toward the sheet substrate. Mounted in the shape of Mt.Fuji, the entire convex part has a vertical cross-sectional shape approximately approximating a trapezoidal shape, and the lower bottom in contact with the sheet base is larger than the upper base of the convex part tip. In addition, dirt near the base of the convex portion 12 can be easily washed.

  Further, the anti-slip sheet 50 for the wet environment is the surface of the sheet base 11, and the entire sheet base 11 excluding the convex portion 12 is formed of a sheet-like plastic 56. The plastic 56 is a sheet having a thickness of 2 mm made of an elastomer resin having a D hardness of 64 degrees from the elastomer resin 15, and is heat-sealed and integrated at the same time as the formation of the non-slip sheet 50 for a wet environment, and is 100 mm long by cantilever support. The sheet base 11 around the base of the convex portion 12 is formed of the plastic 56 and has a small amount of dirt and is easy to clean. It has a configuration.

  The anti-slip sheet 60 for the wet environment of the third modified example of FIG. 4C is different from the other embodiments in the shape of the convex portion 12, and the trapezoid in which the convex portion 12 extends from the top toward the sheet base. The entire convex part formed in the shape of the vertical section is approximately a trapezoidal shape, and the lower base in contact with the sheet base is larger than the upper base at the tip of the convex part. Dirt near the root of the shape portion 12 can be easily washed.

  Further, the anti-slip sheet 60 for a wet environment includes the inside of the convex portion 12 and the inside of the sheet substrate 11 made of plastic 66 made of polypropylene, and the entire surface layer portion of the elastomer resin 15 having a thickness of 0.7 mm. Is formed by. The total thickness of the sheet base at this time is 1.8 mm. The non-slip sheet 60 for the water-wetting environment of the third modified example has a sheet rigidity that the self-weight deflection at a length of 100 mm by cantilever support is 10 mm, and has the same non-slip effect as the other modified examples. It has excellent washability and rigidity that can be stood and stored.

[Fourth embodiment]
Next, a third embodiment of the non-slip sheet for a wet environment according to the present invention will be described.
In the fourth embodiment, in the same configuration as the first embodiment, the surface roughness Ra of the top surface 14 of the convex portion 12 is 4.6 μm, and the top surface 14 and the convex portion side surface 13 are angled. Is an R shape with a radius of about 500 μm, and the rest is the same as in the first embodiment.

[Comparative example]
Next, in carrying out the anti-slip performance test of the anti-slip sheet for the wet environment according to the present invention, Comparative Example 1 and Comparative Example 2 in the same specifications as the first example are used as comparative examples for performance comparison. Created. Comparative Example 1 employs only a flat sheet base made of an elastomer resin that does not form a convex portion as an anti-slip sheet. Further, as Comparative Example 2, a test was conducted without using a non-slip sheet, and Comparative Example 2 was used.

[Non-slip performance test]
Next, the anti-slip performance test conducted on the performance of the anti-slip sheet for the wet environment according to the present invention will be described.

[Test method]
The anti-slip performance test was performed on the anti-slip sheet 10 for the wet environment of the first embodiment. The test method was performed according to JISK7125 (plastic-film and sheet-friction coefficient test method). Each anti-slip sheet as a test sample was placed on a stainless steel plate, and a commercially available cutting board having a thickness of 20 mm with surface embossing was employed as a sliding piece. The contact area of the sliding piece is 40 cm ² and the total mass is 200 g.

The test was conducted in a dry environment and a wet environment, and the static friction force and dynamic friction force were measured, respectively. In addition, 100 cc of water was applied to the sample every time in the test of the wet environment. In the measurement of static friction force, the contact time was 30 seconds.
As for sensory tests, in a wet environment, the sliding strength is sensed while applying various practical forces to the upper part of the cutting board, which becomes a sliding piece, and the sliding strength is ◯: Excellent, △: Use A three-stage evaluation was made that it was possible, x: unsuitable for use.

[Test results]
Table 1 shows the test results obtained by measuring the friction coefficient.

As is clear from the above test results, the anti-slip sheet for a wet environment of the present invention has a sufficient anti-slip effect even in a wet environment.
The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the present invention, in addition to the modifications combining the above-described embodiments.

FIG. 1 is a view showing a non-slip sheet for a wet environment in the first embodiment according to the present invention. FIG. 2 is a view showing a non-slip sheet for a wet environment in the second embodiment according to the present invention. FIG. 3 is a view showing a non-slip sheet for a wet environment in the third embodiment according to the present invention. FIG. 4 is a partially enlarged top view showing first to third modified examples of the non-slip sheet for a water-wetting environment in the third embodiment according to the present invention.

Explanation of symbols

10, 20, 30, 40, 50, 60: Non-slip sheet for wet environment, 11: Sheet base, 12: Convex part, 13: Convex part side surface, 14: Top surface, 15: Elastomer resin, 36 , 46, 56, 66: Plastic

Claims (8)

  A non-slip sheet in which a plurality of convex portions are formed on the surface of the sheet base, and the convex portions are formed of a flexible elastomer resin at least at the tip, and are erected in a column shape independently from the surface of the sheet base. The top of the convex portion has a top surface formed on a smooth surface, the top surface and the side surface of the convex portion are clearly angled, and the coefficient of static friction in a wet environment is 1 or more. A non-slip sheet for a wet environment characterized by having a stopping performance.   The anti-slip sheet for water-wetting environment according to claim 1, wherein the top surface of the convex part is formed to have a surface roughness with an arithmetic average roughness Ra of 5 µm or less.   The cornering of the top surface of the convex portion and the side surface of the convex portion is formed in a shape that approximates an R shape having a radius of 500 μm or less. Non-slip sheet.   The anti-slip sheet for a water-wetting environment according to any one of claims 1 to 3, wherein the height of the convex portion is formed in a range of 0.1 to 3 mm from the surface of the sheet substrate. The convex portions have an area of individual top surfaces of 1 to 400 mm ² and are uniformly arranged on the sheet substrate, and the total area of the top surfaces is 20 to 60% of the total area of the sheet substrate. The non-slip sheet for water-wetting environment according to any one of claims 1 to 4.   The anti-slip sheet for a water-wetting environment according to any one of claims 1 to 5, wherein the convex portions are formed on both surfaces of the sheet substrate and are formed substantially symmetrically with respect to the sheet substrate.   The convex portion has a longitudinal cross-sectional shape that approximately approximates a trapezoidal shape as a whole, and has a lower bottom that is in contact with the sheet substrate larger than the upper bottom of the convex portion. Non-slip sheet for wet environment as described in 1.   A plastic having a rigidity higher than that of an elastomer resin forming a convex portion is disposed at least inside or on the surface of the sheet base, and has a sheet rigidity that allows a self-weight deflection at a length of 100 mm by cantilever support to be 30 mm or less. The anti-slip sheet for a wet environment according to any one of 1 to 7.

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