Mouse pad

Abstract

The mouse pad according to the present disclosure is provided with a polyurethane foam layer having an installation surface, and recesses and protrusions are formed on the installation surface.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a mouse pad, and particularly, to a mouse pad having a polyurethane foam. BACKGROUND

[0002] A mouse pad is a plate-like member laid under a mouse to assist the movement of the mouse when using a computer. In recent years, a mouse pad larger than conventional products has been sold on the market as a game mouse pad for use in computer games.

[0003] As an example of a mouse pad, a mouse pad is disclosed in Japanese Patent Application Publication No. 2002-189564, in which a sheet made of a sponge-like polyurethane foam resin having elasticity is combined with a cotton cloth made of a fabric woven with 10 to 30 cotton yarns having moisture retention properties, by bonding the cotton cloth to the surface of the sheet (paragraph 0007). However, a mouse pad having a flat back surface sometimes does not fit a desired surface properly, and sometimes the fit between the mouse pad and the desired surface is too strong to be peeled off. This tendency is particularly noticeable when a large mouse pad is used. SUMMARY

[0004] PROBLEMS TO BE SOLVED BY THE INVENTION

[0005] In view of the above, an object of the present disclosure is to provide a mouse pad having good adhesion as a mouse pad, and further improved peelability.

[0006] MEANS FOR SOLVING THE PROBLEMS

[0007] Among the means for solving the above problems, the following means are included.

[0008] A first means is a mouse pad having a polyurethane foam layer having a placement surface, in which concavities and convexities are formed on the placement surface.

[0009] A second means is the mouse pad according to the first means, in which the depth of the concavities and convexities formed on the placement surface is in a range of 5 μm or more and 150 μm or less.

[0010] A third means is the mouse pad according to the first means or the second means, in which the maximum static friction coefficient of the placement surface is 1.0 or more and 25.0 or less.

[0011] A fourth means is the mouse pad according to any one of the first means to the third means, in which the dynamic friction coefficient of the placement surface is 1.0 or more and 25.0 or less.

[0012] The fifth aspect is the mouse pad according to any one of the first to fourth aspects, wherein the unevenness is a pattern of unevenness formed by transfer on a mold.

[0013] Effects of Invention

[0014] According to the present disclosure, it is possible to provide a mouse pad having good gripping properties as a mouse pad, and further improved peelability. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1A is a table of physical properties of the example.

[0016] Figure 1B is a table of physical properties of the comparative example.

[0017] Figure 2 is a measurement method of the maximum static friction coefficient and the dynamic friction coefficient of the example and the comparative example.

[0018] Figure 3 is a measurement method of the 25% CLD hardness of the example and the comparative example.

[0019] Figure 4 is a measurement method of the rebound modulus of the example and the comparative example.

[0020] Figure 5A is a plan view showing the mouse pad of Example 1 Figure 1A .

[0021] Figure 5B is a bottom view showing the mouse pad of Example 1 Figure 1A , the pattern of Example 1 being continuous up, down, left, and right.

[0022] Figure 5C is a front view showing the mouse pad of Example 1 Figure 1A , the front view being the same as the rear view.

[0023] Figure 5D is a right view showing the mouse pad of Example 1 Figure 1A , the right view being the same as the left view.

[0024] Figure 5E is a partial enlarged view showing the A-A', B-B' portion shown in Figure 5B .

[0025] Figure 5F is a partial enlarged view showing the C-C' portion shown in Figure 5C .

[0026] Figure 5G is a partial enlarged view showing the D-D' portion shown in Figure 5EPartial enlarged view of the portion indicated by D-D', E-E' shown in an enlarged manner.

[0027] Figure 5H End view of the cut portion at the time of cutting along the line F-F' shown in an enlarged manner. Figure 5G End view of the cut portion at the time of cutting along the line F-F' shown in an enlarged manner.

[0028] Figure 5I End view of the cut portion at the time of cutting along the line F-F' shown in an enlarged manner. Figure 5G End view of the cut portion at the time of cutting along the line F-F' shown in an enlarged manner.

[0029] Figure 5J Image of the bottom surface of the mouse pad of Example 1 (Example 1) shown in an enlarged manner of 50 times with a microscope. Figure 1A

[0030] Figure 6A Plan view of the mouse pad of Example 3 (Example 3) shown in an enlarged manner. Figure 1A

[0031] Figure 6B Bottom view of the mouse pad of Example 3 (Example 3) shown in an enlarged manner, the pattern of Example 3 is continuous in up and down and left and right. Figure 1A

[0032] Figure 6C Front view of the mouse pad of Example 3 (Example 3) shown in an enlarged manner, the front view is the same as the rear view. Figure 1A

[0033] Figure 6D Right view of the mouse pad of Example 3 (Example 3) shown in an enlarged manner, the right view is the same as the left view. Figure 1A

[0034] Partial enlarged view of the portion indicated by A-A', B-B' shown in an enlarged manner. Figure 6E Figure 6B Partial enlarged view of the portion indicated by C-C' shown in an enlarged manner.

[0035] Figure 6F Figure 6C Partial enlarged view of the portion indicated by D-D', E-E' shown in an enlarged manner.

[0036] Figure 6G Partial enlarged view of the portion indicated by D-D', E-E' shown in an enlarged manner. Figure 6E

[0037] End view of the cut portion at the time of cutting along the line F-F' shown in an enlarged manner. Figure 6H Figure 6G End view of the cut portion at the time of cutting along the line F-F' shown in an enlarged manner.

[0038] Figure 6I ​​​​​​​is an image of the bottom surface of the mouse pad of Example 3 Figure 1A ) using a microscope at 50 times magnification.

[0039] Figure 7A is a plan view of the mouse pad of Example 2 Figure 1A ).

[0040] Figure 7B is a bottom view of the mouse pad of Example 2 Figure 1A ), the pattern of Example 2 being continuous in the up-down and left-right directions.

[0041] Figure 7C is a front view of the mouse pad of Example 2 Figure 1A ), the front view being identical to the rear view.

[0042] Figure 7D is a right view of the mouse pad of Example 2 Figure 1A ), the right view being identical to the left view.

[0043] Figure 7E is a partial enlarged view showing the A-A', B-B' portions shown in Figure 7B .

[0044] Figure 7F is a partial enlarged view showing the C-C' portion shown in Figure 7C .

[0045] Figure 7G is a partial enlarged view showing the D-D', E-E' portions shown in Figure 7E .

[0046] Figure 7H is an end view of the cut portion when cut along the F-F' line shown in Figure 7G , in a case where a portion in the plate thickness direction in the mouse pad is omitted.

[0047] Figure 7I is an image of the bottom surface of the mouse pad of Example 2 Figure 1A ) using a microscope at 50 times magnification.

[0048] Figure 8A is a plan view of the mouse pad of Example 5 Figure 1A ).

[0049] Figure 8B is a bottom view of the mouse pad of Example 5 Figure 1A ), the pattern of Example 5 being continuous in the up-down and left-right directions.

[0050] Figure 8C is a front view of the mouse pad of Example 5 Figure 1Ais a front view of the mouse pad of Example 5

[0051] Figure 8D is a right view of the mouse pad of Example 5 Figure 1A ), the right view and the left view are identical.

[0052] Figure 8E is a partial enlarged view showing the A-A', B-B' portion shown in Figure 8B

[0053] Figure 8F is a partial enlarged view showing the C-C' portion shown in Figure 8C

[0054] Figure 8G is a partial enlarged view showing the D-D', E-E' portion shown in Figure 8E

[0055] Figure 8H is an end view of the cut portion when cutting along the F-F' line shown in Figure 8G

[0056] Figure 8I is an image showing the bottom surface of the mouse pad of Example 5 Figure 1A ) using a microscope at 20 times magnification.

[0057] Figure 9A is a plan view of the mouse pad of Example 6 Figure 1A ).

[0058] Figure 9B is a bottom view of the mouse pad of Example 6 Figure 1A ), the pattern of Example 6 is continuous in up and down and left and right.

[0059] Figure 9C is a front view of the mouse pad of Example 6 Figure 1A ), the front view and the back view are identical.

[0060] Figure 9D is a right view of the mouse pad of Example 6 Figure 1A ), the right view and the left view are identical.

[0061] Figure 9E is a partial enlarged view showing the A-A', B-B' portion shown in Figure 9B

[0062] Figure 9F is a partial enlarged view showing the C-C' portion shown in Figure 9C ​​​​​​

[0063] Figure 9G is a partial enlarged view of the D-D', E-E' portion shown in the enlarged view. Figure 9E

[0064] Figure 9H is an end view of the cut portion when cut along the F-F' line shown in the enlarged view. Figure 9G

[0065] Figure 9I is an image of the bottom surface of the mouse pad of Example 6 (Figs. 1 and 2) shown by a microscope at 50 times magnification. Figure 1A DETAILED DESCRIPTION

[0066] Hereinafter, embodiments of the present application will be described with reference to the accompanying drawings. Note that the present application is not limited to the following embodiments.

[0067] In the present specification, the "setting surface" refers to the back surface of the mouse pad and is the back surface that directly contacts the surface (e.g., flat surface) on which the mouse pad is to be set. It can also be referred to as the "grounding surface".

[0068] [Mouse Pad]

[0069] The present disclosure relates to a mouse pad provided with at least a polyurethane foam layer. One surface of the polyurethane foam layer functions as a surface that directly contacts a flat surface on which the mouse pad is to be set (hereinafter sometimes referred to as "setting surface"). A concave-convex (i.e., three-dimensional pattern) is formed on the "setting surface". By the concave-convex, the mouse pad can be set on the flat surface on which the mouse pad is to be set with moderate close contact. Therefore, compared with a mouse pad whose back surface is flat, the range of selection of the flat surface on which the mouse pad is to be set can be expanded. On the other hand, by the concave-convex, the close contact between the setting surface of the polyurethane foam layer and the flat surface on which the mouse pad is to be set can be moderated, and the mouse pad can be easily peeled off. The reason for these effects is believed to be that, due to the concave-convex formed on the setting surface of the polyurethane foam layer, a minute space is created between the setting surface and the flat surface on which the mouse pad is to be set. Thus, the mouse pad according to the present disclosure can maintain moderate grip while moderating excessive close contact, in addition to the light weight of the polyurethane foam itself, and does not need to be selected for the place of use, and can be easily moved to the desired place for use.

[0070] The mouse pad according to the present disclosure cannot move the mouse pad in parallel (i.e., misalign) with respect to the flat surface on which the mouse pad is to be set, and can maintain the good grip required for the mouse pad.

[0071] ​​​In addition, the mouse pad according to the present disclosure is provided with a polyurethane foam layer, and thus has a comfortable mouse operation feeling due to a moderate sinking of the mouse pad under the weight of the hand, and the sinking of the polyurethane foam layer is appropriately recovered for the movement of the mouse, and thus the operability of the mouse is improved.

[0072] The material of the flat surface on which the mouse pad is placed according to the present disclosure is not particularly limited as long as the mouse pad is normally used. In general, metals, wood, plastics, glass, and the like can be listed.

[0073] The layer structure of the mouse pad according to the present disclosure can be composed of only the polyurethane foam layer. Alternatively, another layer can be further laminated on the side of the polyurethane foam layer opposite to the concave-convex. For example, a layer formed of cloth, plastic, or the like can be further laminated as the surface layer (i.e., the uppermost layer) of the mouse pad. Alternatively, the surface of the mouse pad according to the present disclosure can be subjected to surface treatment such as lamination processing. In this way, the outermost surface of the mouse pad on which the mouse moves is not particularly limited, and a publicly known outermost surface of a mouse pad can be appropriately used.

[0074] The size of the mouse pad is not particularly limited. The size in the normal use can be used, for example, the size required for a game mouse pad such as 500 mm x 500 mm, 450 mm x 450 mm, 500 mm x 1000 mm. In addition, the thickness of the mouse pad is not particularly limited as long as the function as a mouse pad is exerted.

[0075] [Polyurethane Foam Layer]

[0076] The polyurethane foam layer possessed by the mouse pad according to the present disclosure can be formed using a publicly known composition for polyurethane foam. The polyurethane foam layer is more preferably formed to have the physical properties described later. As the publicly known composition for polyurethane foam, for example, PORON (registered trademark) manufactured by Rogers Inoac, and the like can be listed.

[0077] The density (apparent density) of the polyurethane foam layer is a value measured in accordance with JIS K 6401, and is preferably 100 kg / m 3 or more and 900 kg / m 3 or less, more preferably 130 kg / m 3 or more and 600 kg / m 3 or less, further preferably 150 kg / m 3 or more and 500 kg / m 3 or less. When the density is 100 kg / m 3 or more, the mouse easily slides, and the operability of the mouse is improved, and thus is preferable. When the density is 900 kg / m 3The following is preferable because it has sufficient cushioning properties, and can reduce the burden on the hand and wrist.

[0078] JIS (Japanese Industrial Standards) is a national standard of Japan that prescribes standards, measurement methods, and the like related to industrial products in Japan.

[0079] Density (apparent density) was measured according to the JIS K 6401:2011 standard.

[0080] Specifically, the measurement was performed in accordance with JIS K 6401 "Soft Polyurethane Foam for Cushioning" in the following manner.

[0081] 1. Test piece: 50 x 50 mm prismatic shape

[0082] 2. Test machine: thickness gauge, electronic balance

[0083] 3. Number of test pieces: 2

[0084] 4. Test method:

[0085] The thickness of the test piece was measured using a thickness gauge.

[0086] The mass of the test piece was measured using an electronic balance.

[0087] 5. Method of summarizing test results:

[0088] The density of the test piece was calculated by the following formula.

[0089] Density [kg / m 3 ] = mass of test piece [g] / volume of test piece [mm 3 ] x 10 6

[0090] The thickness of the polyurethane foam layer, including the concave-convex, is preferably 0.5 mm or more and 6.0 mm or less, more preferably 1.0 mm or more and 5.5 mm or less, and further preferably 1.5 mm or more and 5 mm or less. When the thickness is 0.5 mm or more, the grip property as a mouse pad can be maintained. When the thickness is 6.0 mm or less, even when other layers are stacked as the uppermost layer, the mouse pad is not excessively thick, which is preferable.

[0091] The value measured according to JIS K 7125 is preferably 1.0 or more, more preferably 1.5 or more, and further preferably 2.0 or more, with respect to the maximum static friction coefficient of the surface on which the polyurethane foam layer is provided. In addition, the value measured according to JIS K 7125 with respect to the maximum static friction coefficient of the surface on which the polyurethane foam layer is provided may, for example, be 25.0 or less, 10.0 or less, or 4.0 or less. When the maximum static friction coefficient is 1.0 or more, good gripping property required for the mouse pad can be maintained. When the maximum static friction coefficient is 25.0 or less, the mouse pad can be easily peeled off.

[0092] The value measured according to JIS K 7125 is preferably 1.0 or more, more preferably 1.5 or more, and further preferably 2.0 or more, with respect to the dynamic friction coefficient of the surface on which the polyurethane foam layer is provided. In addition, the value measured according to JIS K 7125 with respect to the dynamic friction coefficient of the surface on which the polyurethane foam layer is provided may, for example, be 25.0 or less, 10.0 or less, or 5.0 or less. When the dynamic friction coefficient is 1.0 or more, good gripping property required for the mouse pad can be maintained. When the dynamic friction coefficient is 25.0 or less, the mouse pad can be easily peeled off.

[0093] The measurement method of the maximum static friction coefficient and the dynamic friction coefficient is described below.

[0094] Standard: Based on JIS K 7125: 1999

[0095] Sample size: 80 mm x 80 mm

[0096] Load: 200 g / 40 cm 2 (1.96 N)

[0097] Test speed: 100 mm / min

[0098] Figure 2 The measurement method of the maximum static friction coefficient and the dynamic friction coefficient is described below. In Figure 2 , 21 is a load, 22 is a sample, 23 is a mating material, and 24 is a load cell.

[0099] The friction coefficient μ is calculated by the following formula.

[0100] Friction coefficient μ (Coefficient of stiction) = Stiction / Load

[0101] The value measured according to JIS K6254 with respect to the 25% compression load (CLD) of the polyurethane foam layer is preferably 0.001 MPa or greater and 0.5 MPa or less, more preferably 0.005 MPa or greater and 0.4 MPa or less, further preferably 0.01 MPa or greater and 0.3 MPa or less. When the 25% CLD is 0.001 MPa or greater, the mouse easily slides, and the operability of the mouse is improved, and thus is preferred. When the 25% CLD is 0.5 MPa or less, sufficient cushioning is obtained, and the burden on the hand and wrist is reduced, and thus is preferred.

[0102] The 25% CLD is measured according to JIS K 6254:2010.

[0103] Specifically, JIS K 6254 "Stress / Strain Test Method for Vulcanized Rubber at Low Deformation" is used as a reference, and the measurement is performed as follows.

[0104] 1. Test piece: Cylindrical shape

[0105] 2. Compression testing machine:

[0106] While the CLD measurement jig is in contact with the test piece, the load cell senses the rebound force from the compressed test piece, and continuously records it (refer to Figure 3 (a) Compression testing machine).

[0107] 3. Number of test pieces: 3

[0108] 4. Test method:

[0109] The test piece is compressed at a rate of 1.0 mm / min until a strain of 30% is reached, and the relationship between the compression force and the deflection is recorded (compression force-deformation curve).

[0110] 5. Method of summarizing test results

[0111] From the recorded compression force-deformation curve, the compression force at a deflection of 25% with respect to the thickness of the test piece before compression is calculated (refer to Figure 3 (b) Compression force-displacement curve).

[0112] The 25% compression load is calculated by the following equation.

[0113] 25% Compression load [MPa] = Compression force at a deflection of 25% [N] / Area of test piece [mm 2 ]

[0114] Figure 3 is a measurement method of 25% CLD hardness. In Figure 3 In (a), (a) is a "compression testing machine", and (b) is a "compression force-displacement curve". In (a), 31 is a load cell, 32 is a jig for CLD measurement, and 33 is a test piece of the compression testing machine

[0115] As for the rebound modulus of the polyurethane foam layer, the value measured in accordance with JIS K 6400-3 is preferably 10% or more, more preferably 20% or more, or 30% or more, or 40% or more, further preferably 50% or more. In addition, as for the rebound modulus of the polyurethane foam layer, the value measured in accordance with JIS K 6400-3 may be, for example, 90% or less, 80% or less, or 70% or less. When the rebound modulus is 10% or more, for example, it is possible to prevent the mouse itself from sinking during mouse work, and to reduce the load on the hand. When the rebound modulus is 90% or less, the cushioning property is good, and it is possible to reduce the load on the hand.

[0116] The measurement method of the rebound modulus is as described below.

[0117] Standard: JIS K 6400-3

[0118] Drop height: 500 mm

[0119] Weight of the ball: 16 g

[0120] Diameter of the ball: 16 mm

[0121] Sample thickness: 50 mm

[0122] Figure 4 is a measurement method of the rebound modulus. In Figure 4 In (a), 41 is a sample, 42 is a ball, h0 is a drop height, and hi is a rebound height.

[0123] The rebound modulus R is calculated by the following formula.

[0124] Rebound modulus R (%) = Rebound height hi / Drop height h0 x 100

[0125] The depth of the concavo-convex formed on the surface of the polyurethane foam layer (or the height of the concavo-convex) is preferably in the range of 5 μm or more and 150 μm or less, more preferably in the range of 10 μm or more and 140 μm or less, and further preferably in the range of 20 μm or more and 130 μm or less. When the depth of the concavo-convex formed on the surface is in the range of 5 μm or more and 150 μm or less, the polyurethane foam layer can be used without being aware of the concavo-convex of the surface when using a mouse pad. Note that the depth of the concavo-convex can be random or fixed as long as the depth is in the above range on one mouse pad.

[0126] [Method for manufacturing polyurethane foam layer]

[0127] The polyurethane foam layer is formed with the concavo-convex on the surface as a surface to be placed by using a mold having a concavo-convex pattern to transfer the pattern at the time of manufacturing. In this way, the concavo-convex of the polyurethane foam layer can be easily formed by using the concavo-convex pattern of the mold. The method for manufacturing the polyurethane foam layer is as follows.

[0128] (1) The raw material mixture of the polyurethane foam is sufficiently foamed in advance by using a mixing machine.

[0129] (2) The mold having the concavo-convex pattern on the surface is placed (or set) on a flat surface with the surface having the pattern upward.

[0130] (3) The raw material mixture of the polyurethane foam foamed in (1) is applied on the pattern of (2).

[0131] (4) The raw material mixture of the polyurethane foam applied in (3) is formed to a desired thickness.

[0132] Note that the polyurethane foam layer can also be formed by using a publicly known mechanical foaming method which is simpler than a chemical foaming (e.g., water foaming) method. In the mechanical foaming method, a high-shear mixing machine is used as the mixing machine of (1) above, and the raw material mixture is mixed while blowing in a non-reactive gas, whereby a foamed raw material mixture containing fine bubbles can be adjusted.

[0133] In addition, a surface treatment such as lamination, decorative printing, or the like can be performed on the surface (the surface other than the surface to be placed) of the formed polyurethane foam layer. A surface treatment such as coating can also be performed on the back surface (the surface to be placed) of the polyurethane foam layer, but it is preferable that the surface treatment is not performed and the tackiness of the polyurethane foam is used to exhibit the gripping property.

[0134] [Mold]

[0135] The "mold" used in the above (2) means a mold having a concave-convex pattern (i.e., a three-dimensional pattern) on one surface, and is a mold that transfers the concave-convex pattern to the surface on which the polyurethane foam layer is provided. For example, it can also be a sheet-shaped mold. The material of the mold is not particularly limited as long as it does not affect the formation of the polyurethane foam layer. It can be paper, plastic, or metal. However, if the ease of availability or cost, ease of handling, and the like are considered, a mold paper or plastic sheet is preferable. For example, it can also be a mold paper or plastic sheet that has been embossed.

[0136] In addition, the pattern to be transferred is, for example, a lattice pattern, a diagonal lattice pattern (or a diamond pattern), a honeycomb pattern, a geometric pattern, a leather-like pattern, a dot pattern, and the like, and is not particularly limited as long as the depth of the concave-convex is within the above range and a concave-convex pattern can be formed. In this way, various concave-convex patterns can be easily formed on the back surface of the mouse pad, and the designability of the mouse pad can be improved.

[0137] In addition, the range in which the concave-convex pattern is formed can be the entire surface of one surface of the polyurethane foam layer, or a part of one surface of the polyurethane foam layer. For example, the concave-convex pattern can also be formed along the edge of the polyurethane foam layer at a prescribed width. However, from the viewpoint of design, it is preferable to be formed on the entire surface of one surface of the polyurethane foam layer. Alternatively, a plurality of patterns can be combined to form a concave-convex pattern as one mold.

[0138] In this way, a functional property and designability can be simultaneously formed on the polyurethane foam layer by the concave-convex pattern.

[0139] Specific examples of the present disclosure are shown in the accompanying drawings.

[0140] In Figures 5A-5J , a mouse pad of Example 1 shown in Figure 1A is shown.

[0141] In Figures 6A-6I , a mouse pad of Example 3 shown in Figure 1A is shown.

[0142] In Figures 7A-7I , a mouse pad of Example 2 shown in Figure 1A is shown.

[0143] In Figures 8A-8I , a mouse pad of Example 5 shown in Figure 1A is shown.

[0144] In Figures 9A-9I , a mouse pad of Example 6 shown in Figure 1A is shown.

[0145] Figure 1AThe mouse pad of Example 4 is a mouse pad having a different apparent density from the mouse pad of Example 3. In addition, a sheet-like cloth, plastic, or the like can be attached to the upper surface of the mouse pad, although not shown.

[0146] Thus, the mouse pad according to the present disclosure has a polyurethane foam, and a grid-shaped or leather-texture-mimicking pattern or the like is provided in relief on the back surface (mounting surface).

[0147] For example, it can be a mouse pad using a polyurethane foam having an apparent density of 100 kg / m 3 900 kg / m 3 100 kg / m 3 500 kg / m 3 or 100 kg / m

[0148] It can be a mouse pad using a polyurethane foam having a maximum static friction coefficient of 1.0 or more and 25.0 or less, or 1.5 or more and 10 or less, measured according to JIS K7125. Note that the maximum static friction coefficient is measured with respect to the surface of the polyurethane foam of the mouse pad corresponding to the back surface (mounting surface).

[0149] It can be a mouse pad using a polyurethane foam having a kinetic friction coefficient of 1.0 or more and 25.0 or less, or 1.5 or more and 5 or less, measured according to JIS K7125. Note that the kinetic friction coefficient is measured with respect to the surface of the polyurethane foam of the mouse pad corresponding to the back surface (mounting surface).

[0150] It can be a mouse pad using a polyurethane foam having a 25% CLD hardness of 0.001 MPa or more and 0.5 MPa or less, or 0.01 MPa or more and 0.1 MPa or less, measured according to JIS K6254.

[0151] It can be a mouse pad using a polyurethane foam having a resilience modulus of 10% or more and 90% or less, or 20% or more and 80% or less, or 30% or more and 70% or less, measured according to JIS K6400-3.

[0152] As described above, the mouse pad according to the present disclosure has good grip, and the ease of peeling is improved by forming a concave-convex pattern on the back surface, and further, designability is imparted to the back surface. In addition, the polyurethane foam layer possessed by the mouse pad has physical properties that it is not easily collapsed, has cushioning properties, and is not easily fatigued. Thus, it can be used not only as a general mouse pad, but also as a game mouse pad.

[0153] EXAMPLE

[0154] Next, an embodiment is shown to explain the present application more specifically. However, the present application is not limited to this embodiment, and can be implemented in various ways with various changes and improvements based on the knowledge of those skilled in the art.

[0155] [Polyurethane foam]

[0156] The polyurethane foam used in Examples 1-6 was PORON manufactured by Rogers Inoac Corporation.

[0157] The polyurethane foam used in Comparative Examples 1-4 was as shown below. Figure 1A Figure 1B

[0158] • Example 1: PORON ML-20, manufactured by Rogers Inoac Corporation

[0159] • Example 2: PORON ML-20, manufactured by Rogers Inoac Corporation

[0160] • Example 3: PORON ML-20, manufactured by Rogers Inoac Corporation

[0161] • Example 4: PORON ML-24, manufactured by Rogers Inoac Corporation

[0162] • Example 5: PORON HR-24, manufactured by Rogers Inoac Corporation

[0163] • Example 6: PORON BB-32, manufactured by Rogers Inoac Corporation

[0164] • Comparative Example 1: PORON FW-27, manufactured by Rogers Inoac Corporation

[0165] • Comparative Example 2: PORON L-24, manufactured by Rogers Inoac Corporation

[0166] • Comparative Example 3: PORON ML-24, manufactured by Rogers Inoac Corporation

[0167] • Comparative Example 4: PORON ML-20PR, manufactured by Rogers Inoac Corporation

[0168] [Setting surface: mold paper, plastic sheet]

[0169] The mold paper and plastic sheet used in Examples 1-6 were as shown below.

[0170] ​​Examples 1-4 are mixtures of expanded polyurethane foam raw material mixture (before curing) coated onto the patterned surface of a mold paper and then cured. Examples 5-6 are mixtures of expanded polyurethane foam raw material mixture (before curing) coated onto the patterned surface of a plastic sheet and then cured.

[0171] • Example 1: Mold paper 1, G2, manufactured by Lintec Co., Ltd.

[0172] Example 2: Mold paper 2, G3, manufactured by Lintec Corporation

[0173] Example 3: Mold paper 3, FG, manufactured by Kunshan Shizhi High Coating Materials Co., Ltd.

[0174] Example 4: Mold paper 3, FG, manufactured by Kunshan Shizhi High Coating Materials Co., Ltd.

[0175] Example 5: Plastic sheet 1, 7410-C, manufactured by Shenzhen Degussaino Technology.

[0176] Example 6: Plastic sheet 2, DT, manufactured by Sichuan Dongcai New Material Manufacturing Co., Ltd.

[0177] [Coating of the set surface]

[0178] The mouse pads of Examples 1-6 have a polyurethane foam layer with a molded embossed pattern transferred onto the setting surface. No coating is applied to the setting surface.

[0179] The mouse pads of Comparative Examples 1-4 have a polyurethane foam layer with a flat setting surface. On the setting surface of Comparative Examples 1-3, a coating (UV (ultraviolet) coating) primarily used to suppress adhesion is applied. The UV coating is formed by applying an acrylic resin and irradiating it with UV light. Due to the coating layer, the setting surface of Comparative Examples 1-3 has a smooth feel, and the maximum coefficient of static friction is smaller than that of Examples 1-4. On the other hand, the setting surface of Comparative Example 4 does not have a coating layer. Therefore, the maximum coefficient of static friction is much larger than that of Examples 1-3 with the same polyurethane foam.

[0180] exist Figures 5A-5J The image shows a mouse pad of Example 1 (with an unevenness depth of approximately 70 μm).

[0181] exist Figures 7A-7I The image shows a mouse pad of Example 2 (with an unevenness depth of approximately 30 μm).

[0182] exist Figures 6A-6I The image shows a mouse pad of Example 3 (with an unevenness depth of approximately 100 μm).

[0183] exist Figures 8A-8IA mouse pad of Example 5 (the depth of the concave-convex is about 8 μm) is shown in (a).

[0184] In Figures 9A-9I A mouse pad of Example 6 (the depth of the concave-convex is about 25 μm) is shown in (a).

[0185] Figure 5E An enlarged view of the concave-convex pattern (oblique lattice pattern) formed on the back of the mouse pad of Example 1 is shown in (a). On the back of the mouse pad of Example 1, a concave-convex pattern that can be confirmed by the naked eye is formed. Figure 5E The regularly arranged geometric concave-convex pattern shown in (a) is shown. Figure 5G An enlarged view of the concave-convex pattern (oblique lattice pattern) formed on the back of the mouse pad of Example 1 is shown in (a). On the back of the mouse pad of Example 1, a concave-convex pattern that can be confirmed by the naked eye is formed.

[0186] Thus, on the back of the mouse pad of Example 1, the oblique lattice pattern is formed, the ease of peeling is improved, and designability is further imparted.

[0187] Figure 7E An enlarged view of the concave-convex pattern (leather texture pattern) formed on the back of the mouse pad of Example 2 is shown in (a). On the back of the mouse pad of Example 2, a concave-convex pattern that can be confirmed by the naked eye is formed. Figure 7E The concave-convex pattern shown in (a) is shown. Figure 7G An enlarged view of the concave-convex pattern (leather texture pattern) formed on the back of the mouse pad of Example 2 is shown in (a). On the back of the mouse pad of Example 2, a concave-convex pattern that can be confirmed by the naked eye is formed.

[0188] Thus, on the back of the mouse pad of Example 2, the leather texture pattern is formed, the ease of peeling is improved, and designability is imparted.

[0189] Figure 6E An enlarged view of the concave-convex pattern (oblique lattice pattern that is more fine than Example 1) formed on the back of the mouse pad of Example 3 is shown in (a). On the back of the mouse pad of Example 3, a concave-convex pattern that can be confirmed by the naked eye is formed. Figure 6E The concave-convex pattern shown in (a) is shown. Figure 6G An enlarged view of the concave-convex pattern (oblique lattice pattern that is more fine than Example 1) formed on the back of the mouse pad of Example 3 is shown in (a). On the back of the mouse pad of Example 3, a concave-convex pattern that can be confirmed by the naked eye is formed.

[0190] Thus, on the back of the mouse pad of Example 3, the oblique lattice pattern that is more fine is formed, the ease of peeling is improved, and designability is imparted. Note that the concave-convex pattern formed on the back of the mouse pad of Example 4 is the same as that of Example 3.

[0191] Figure 8E An enlarged view of the concave-convex pattern (diamond pattern) formed on the back of the mouse pad of Example 5 is shown in (a). On the back of the mouse pad of Example 5, a concave-convex pattern that can be confirmed by the naked eye is formed. Figure 8E The concave-convex pattern shown in (a) is shown. Figure 8Gis a view further enlarged from the concave-convex pattern. As is apparent, a regular arrangement of geometric patterns is formed.

[0192] Thus, a diamond pattern is formed on the back surface of the mouse pad of Example 5, the peeling easiness is improved, and designability is also imparted.

[0193] Figure 9E is a view further enlarged from the concave-convex pattern (dot pattern) formed on the back surface of the mouse pad of Example 6. On the back surface of the mouse pad of Example 6, a regular arrangement of dot patterns that can be confirmed by the naked eye is formed. Figure 9E the concave-convex pattern shown. Figure 9G is a view further enlarged from the concave-convex pattern. As is apparent, a regular arrangement of dot patterns that cannot be confirmed by the naked eye is formed.

[0194] Thus, a dot pattern is formed on the back surface of the mouse pad of Example 6, the peeling easiness is improved, and designability is also imparted.

Claims

1. A mouse pad, wherein the mouse pad is provided with a polyurethane foam layer having a setting surface, a concavo-convex is formed on the setting surface.

2. The mouse pad according to claim 1, wherein a depth of the concavo-convex formed on the setting surface is in a range of 5 μm or more and 150 μm or less.

3. The mouse pad according to claim 1 or 2, wherein a maximum static friction coefficient of the setting surface is 1.0 or more and 25.0 or less.

4. The mouse pad according to claim 1 or 2, wherein a dynamic friction coefficient of the setting surface is 1.0 or more and 25.0 or less.

5. The mouse pad according to claim 1 or 2, wherein the concavo-convex is formed by transferring a concavo-convex pattern formed on a mold.

Images