JP2013135771A - Anti-slipping sheet, and grip tape - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an anti-slipping sheet and a grip tape having excellent physical strength though they are extremely thin.SOLUTION: An anti-slipping sheet 1 is formed with an anti-slip layer 3 formed of a porous polyurethane resin on one surface of a support layer 2 formed of a fiber base material. The thickness of the anti-slipping sheet 1 is 0.30 mm or below. Preferably, in the anti-slipping sheet 1, tensile strength by a JIS L1096 A method is 30 N/3 cm at least in one direction. Preferably, a constant load elongation percentage by the JIS L1096 A method when a constant load is 1 kg is within a range of 2-30% at least in one direction. Preferably, the fiber base material is a knitted fabric. Preferably, the anti-slipping sheet 1 is used as a grip tape, for example.

Description

  The present invention relates to an anti-slip sheet used for anti-slip when an object is gripped or gripped, and a grip tape comprising the anti-slip sheet. The anti-slip sheet and grip tape of the present invention are excellent in physical strength while being extremely thin.

  2. Description of the Related Art Conventionally, anti-slip sheets used for anti-slip when grasping or grasping an object are known. For example, a non-slip sheet is used on a grip tape (overgrip tape) wound around a grip such as a ball striking tool or the palm side of sports gloves.

  Taking grip tape as an example, the grip of ball striking equipment such as tennis and badminton rackets, golf clubs, baseball bats, and grips of tools, etc., are intended to prevent slipping when used with hand. The grip tape is wound. A general grip tape has a structure in which a porous polyurethane resin layer is provided on the surface of a sheet-like fiber base (for example, Patent Document 1). Porous polyurethane resin is excellent in water absorption and is suitable as a surface material for grip tape.

  The grip tape described above has been commercialized in various thicknesses in accordance with various application developments and user grip comfort requirements. In general, many grip tapes having a thickness of 0.5 to 0.6 mm are commercially available. However, when the grip tape having such a thickness is wound around the grip, it seems that the thickness of the grip is slightly increased. For example, in the case of a racket, a thicker grip is easier to fix, can reduce blurring in the hand, and is suitable for obtaining a powerful hit. On the other hand, it is difficult to change the racket in the hand (re-grip) and move the wrist flexibly, making it difficult to respond quickly. So racket users choose the type of grip tape to suit their purpose and preference. For competitions and applications that require a flexible wrist work such as badminton, thin grips are preferred. That is, it is generally not preferred for badminton players to unnecessarily thicken the grip by winding the grip tape.

Japanese Patent Laid-Open No. 11-18909

  Increasing the thickness of the grip can be dealt with by increasing the number of times the grip tape is wound or selecting a grip tape with a larger thickness. On the other hand, in order to keep the thickness of the grip as small as possible, it is necessary to reduce the thickness of the grip tape itself. However, it is difficult to make the grip tape extremely thin while maintaining the physical strength of the grip tape, and even a commercially available product cannot be found to be extremely thin (for example, a thickness of 0.30 mm or less). In addition, as a thin grip tape, a grip tape having a thickness of about 0.35 mm using a nonwoven fabric as a base material is commercially available. However, there is a difficulty in physical strength, and it is easily cut when pulled strongly.

  In view of the above-described present situation, an object of the present invention is to provide an anti-slip sheet and a grip tape that are extremely thin and excellent in physical strength.

  The invention according to claim 1 for solving the above problem is an anti-slip sheet in which an anti-slip layer made of a porous polyurethane resin is formed on at least one surface of a support layer made of a fiber substrate, Non-slip sheet for use in gripping or gripping, having a thickness of 0.30 mm or less, and having a tensile strength according to JIS L1096 A method of 30 N / 3 cm or more in at least one direction It is.

  The anti-slip sheet of the present invention is used for anti-slip when gripping or gripping an object, and is formed by forming an anti-slip layer made of a porous polyurethane resin on at least one surface of a support layer made of a fiber base material. is there. The anti-slip sheet of the present invention has a thickness of 0.30 mm or less, which is considerably smaller than the thickness of a conventional grip tape. Furthermore, the anti-slip sheet of the present invention has a tensile strength of 30 N / 3 cm or more (10 N / cm or more) according to JIS L1096 A method in at least one direction. Therefore, the non-slip sheet of the present invention is excellent in physical strength while being extremely thin, and is suitable for anti-slip in a scene where an object is grasped or grasped. For example, when applied to a grip tape, the grip tape is extremely thin and excellent in physical strength.

  Examples of “things used for gripping or preventing slipping when grasping an object” include use as a grip tape, application to gloves (particularly, the palm side of gloves), and the like. In addition, the operation of “grabbing or grasping an object” includes at least an operation involving stretching, bending or stretching or bending of the anti-slip sheet by grasping or grasping the object.

  The invention according to claim 2 is characterized in that the constant load elongation according to JIS L1096 A method is within a range of 2 to 30% when the constant load is 1 kg in at least one direction. This is a non-slip sheet.

  The anti-slip sheet of the present invention is excellent in stretchability, with a constant load elongation according to JIS L1096 A method of 2 to 30% when a constant load is 1 kg in at least one direction. Therefore, it is particularly suitable for anti-slip in scenes involving expansion and contraction of the seat. For example, when it is applied to a grip tape, it is wound while being stretched. However, since it is excellent in elasticity, it is difficult to cut, and it becomes a grip tape excellent in physical strength while being extremely thin.

  The invention according to claim 3 for solving the same problem is an anti-slip sheet in which an anti-slip layer made of a porous polyurethane resin is formed on at least one surface of a support layer made of a fiber base material. Used to prevent slipping when gripping or gripping, and has a thickness of 0.30 mm or less and a constant load elongation according to JIS L1096 A method of 2 to 30% when a constant load is 1 kg in at least one direction. It is an anti-slip sheet characterized by being in the range.

  The anti-slip sheet of the present invention also has a thickness of 0.30 mm or less, which is considerably smaller than the thickness of the conventional grip tape. Furthermore, the anti-slip sheet of the present invention has a constant load elongation according to JIS L1096 A method in the range of 2 to 30% when the constant load is 1 kg in at least one direction, and is excellent in stretchability. Therefore, the anti-slip sheet of the present invention is also particularly suitable for anti-slip in scenes involving expansion and contraction of the sheet.

  The invention according to claim 4 is characterized in that a part of the porous polyurethane resin constituting the anti-slip layer has entered the inside of the fiber base material. It is a sheet.

  In the anti-slip sheet of the present invention, a part of the porous polyurethane resin constituting the anti-slip layer has entered the fiber substrate. With such a configuration, it is further ensured that the anti-slip sheet is compatible with the physical strength.

  In the anti-slip sheet according to any one of claims 1 to 4, the fiber base material is preferably a knitted fabric (Claim 5).

  The invention according to claim 6 for solving the same problem is an anti-slip sheet in which an anti-slip layer made of a porous polyurethane resin is formed on at least one surface of a support layer made of a fiber base material. An anti-slip sheet that is used for anti-slip when grasping or grasping, has a thickness of 0.30 mm or less, and the fiber base material is a knitted fabric.

  The anti-slip sheet of the present invention also has a thickness of 0.30 mm or less, which is considerably smaller than the thickness of the conventional grip tape. Furthermore, in the anti-slip sheet of the present invention, a knitted fabric is used as a fiber base material that serves as a support layer. Therefore, the anti-slip sheet of the present invention is extremely thin and excellent in stretchability, and is suitable for anti-slip in scenes involving expansion and contraction of the sheet such as gripping or grasping an object. For example, when it is applied to a grip tape, it is wound while being stretched. However, since it is excellent in elasticity, it is difficult to cut, and it becomes a grip tape excellent in physical strength while being extremely thin.

  A seventh aspect of the present invention is the anti-slip sheet according to the sixth aspect, wherein a part of the porous polyurethane resin constituting the anti-slip layer enters the inside of the fiber base material.

  With such a configuration, it is further ensured that the anti-slip sheet is compatible with the physical strength.

  In the anti-slip sheet according to any one of claims 1 to 7, it is preferable that the peel strength of the anti-slip layer is 3 N / cm or more (claim 8).

  The invention according to claim 9 is characterized in that the anti-slip layer made of the porous polyurethane resin is formed by a wet coagulation method, and the porous polyurethane resin contains a tack fire. The anti-slip sheet according to any one of 8.

  In the anti-slip sheet of the present invention, an anti-slip layer made of a porous polyurethane resin is formed by a wet coagulation method, and a tackifier (tackifier) is included in the porous polyurethane resin. Therefore, even if the anti-slip layer absorbs moisture and enters a wet state, a decrease in anti-slip performance can be suppressed. For example, when applied to a grip tape, even if the anti-slip layer absorbs sweat and becomes wet, a decrease in grip performance can be suppressed. Moreover, even when the surface of the anti-slip layer is subjected to gravure printing or the like, a decrease in the anti-slip performance can be suppressed. According to the anti-slip sheet of the present invention, high anti-slip performance can be maintained even in a wet state, and high anti-slip performance can be maintained even when surface printing is performed.

  The anti-slip sheet according to claim 9, wherein the fiber base material is impregnated or coated with a solution in which the polyurethane resin and tackifier are dissolved with a solvent that dissolves the polyurethane resin, and then water or a solution containing water as a main component. It can be set as the structure which was immersed in and formed the slip-proof layer which consists of porous polyurethane resins.

  The anti-slip sheet according to claim 9 or 10, wherein the static friction resistance value measured by a method in accordance with JIS K7125 when the total mass of the sliding piece is 1 kg in a wet state is 1.5 kg or more. (Claim 11).

  Invention of Claim 12 apply | coated the ink containing the solvent which melt | dissolves a polyurethane resin on the surface of a slip prevention layer, and gave the desired pattern in any one of Claims 9-11 characterized by the above-mentioned. It is a non-slip sheet.

  With such a configuration, it is possible to maintain a high anti-slip performance even in a wet state and to provide a non-slip sheet having a high design.

  The invention according to claim 13 is a grip tape comprising the anti-slip sheet according to any one of claims 1 to 12.

  The present invention relates to a grip tape, and includes an anti-slip sheet having the above-described configuration. Since the thickness of the grip tape of the present invention is as thin as 0.30 mm or less, the thickness of the grip does not become unnecessarily large even when wound. Furthermore, since it is excellent in physical strength, it is less likely to be cut off halfway even if it is wound while being stretched.

  The anti-slip sheet of the present invention is extremely thin and excellent in physical strength. Therefore, it is suitable for anti-slip in a scene of grasping or grasping an object.

  Since the grip tape of the present invention is extremely thin, the thickness of the grip does not become unnecessarily large even when wound. Furthermore, since it is excellent in physical strength, it is less likely to be cut off halfway even if it is wound while being stretched.

It is sectional drawing which shows typically the cross-sectional structure of the non-slip sheet | seat which concerns on one Embodiment of this invention. (A) is a front view which shows the surface of the anti-slip layer which gave the pattern, (b) is a partially expanded view of (a). It is a perspective view explaining the grip tape concerning one embodiment of the present invention, and its usage. It is a photograph of the anti-slip | skid sheet | seat produced in the Example, (a) is an anti-slip layer surface, (b) is a support layer surface, (c) shows a cross section.

  Embodiments of the present invention will be specifically described below with reference to the drawings. However, it is natural that the present invention is not limited to these embodiments.

  As shown in FIG. 1, an anti-slip sheet 1 according to an embodiment of the present invention has an anti-slip layer 3 made of a porous polyurethane resin formed on one surface of a support layer 2 made of a fiber base material. is there.

  The anti-slip sheet 1 is used for anti-slip when gripping or gripping an object, and is suitable for manufacturing a grip tape or the like. The thickness of the non-slip sheet 1 is 0.30 mm or less, more preferably 0.26 mm or less, still more preferably 0.22 mm or less, and particularly preferably 0.20 mm or less. The thickness can be measured by a method based on JIS L1096.

  Regarding the tensile strength of the anti-slip sheet 1, the tensile strength according to JIS L1096 A method is preferably 30 N / 3 cm or more (10 N / cm or more), more preferably 45 N / 3 cm or more (15 N / cm) in at least one direction. Or more), more preferably 60 N / 3 cm or more (20 N / cm or more), and particularly preferably 70 N / 3 cm or more (23.3 N / cm or more).

  About the value of the said tensile strength, what is necessary is just to satisfy | fill the said range in at least one direction of the non-slip sheet | seat 1. FIG. For example, the tensile strength value only needs to satisfy the above range in any one of the vertical direction, the horizontal direction, and the diagonal direction. Of course, the above range may be satisfied in two or more directions.

  Regarding the constant load elongation of the non-slip sheet 1, the constant load elongation according to the JIS L1096 A method when the constant load is 1 kg is preferably in the range of 2 to 30%, more preferably in at least one direction. It is 3 to 30%, more preferably 4 to 25%, still more preferably 8 to 20%, particularly preferably 10 to 18%.

  The value of the constant load elongation rate may satisfy the above range in at least one direction of the anti-slip sheet 1. For example, the constant load elongation rate value only needs to satisfy the above range in any one of the vertical direction, the horizontal direction, and the diagonal direction. Of course, the above range may be satisfied in two or more directions.

  In the anti-slip sheet 1, an anti-slip layer 3 is formed on one surface of the support layer 2. As a form of formation of the anti-slip layer 3, the anti-slip layer 3 may be simply laminated on the support layer 2. However, in a preferred embodiment, a part of the porous polyurethane resin constituting the anti-slip layer 3 is used as the support layer. 2 penetrates into the inside of the fiber substrate. For example, the fiber base material is embedded in the anti-slip layer 3 (porous polyurethane resin), and the fiber base material functions as a reinforcing material. Therefore, in FIG. 1, the interface between the support layer 2 and the anti-slip layer 3 is indicated by a straight line for convenience, but the interface may not always be clear in the present invention.

  The support layer 2 is made of a fiber material. The material of the fiber base material is not particularly limited, and for example, a fiber base material made of nylon, rayon, polyester, aramid or the like can be used. Moreover, as a structure | tissue of the said fiber base material, although a knitted fabric, a textile fabric, a nonwoven fabric, etc. can be used, when realization of above-described constant load elongation rate is considered, a knitted fabric is preferable. For example, in the case of 15d nylon fiber, a half tricot structure is preferable.

  The thickness of the support layer 2 is not particularly limited as long as the thickness of the anti-slip sheet 1 can be reduced to 0.30 mm or less, and can be, for example, in the range of 0.1 to 0.2 mm. If it is this range, the anti-slip | skid layer 3 can be formed without a problem, restraining the whole thickness to 0.30 mm or less. For example, a knitted fabric having a thickness of about 0.15 mm can be adopted as the fiber base material.

  The anti-slip layer 3 is made of a porous polyurethane resin. In this embodiment, the anti-slip layer 3 is formed by a wet coagulation method, and a tackifier is contained in the porous polyurethane resin. Therefore, high anti-slip performance can be maintained even in a wet state. The tackifier is not particularly limited as long as it can be uniformly contained in a polyurethane resin. Petroleum resin (aromatic, copolymer, alicyclic, aliphatic, etc.), terpene resin, alkylphenol resin Examples thereof include hydrotreated, copolymerized and esterified products of coumarone-indene resin, rosin resin, maleic acid resin and the like.

  The content of the tackifier in the porous polyurethane resin is preferably 5 to 35% by weight, more preferably 12 to 28% by weight, and still more preferably 15 to 22% by weight. That is, if it is less than 5% by weight, the contribution to the anti-slip performance is small, and the anti-slip effect in a wet state is not sufficiently exhibited. On the other hand, when it exceeds 35% by weight, the formation of a porous film of the polyurethane resin in the wet coagulation method is impaired, the adhesive strength is too strong, the handling property is extremely deteriorated, and there is no practicality.

  As the wet coagulation method, for example, a fiber base material is impregnated or coated with a solution obtained by dissolving a polyurethane resin and a tackifier in a solvent that dissolves the polyurethane resin, and then in water or a solution containing water as a main component. A method of immersing and forming the anti-slip layer 3 made of a porous polyurethane resin can be mentioned.

  The thickness of the anti-slip layer 3 is not particularly limited as long as the thickness of the anti-slip sheet 1 is within a range of 0.30 mm or less, preferably 0.01 to 0.2 mm, more preferably 0.05 to. 0.15 mm.

  The peel strength of the anti-slip layer 3 is not particularly limited, but is preferably 3 N / cm or more, more preferably 4 N / cm or more, and even more preferably 6 N / cm or more. The “peel strength” as used herein refers to a pressure-sensitive adhesive tape having a hot melt resin layer on the back surface of a polyester substrate, which is bonded to the surface of the anti-slip layer 3 at a temperature of about 120 ° C. One end of the adhesive tape is slightly peeled off, the peeled portion is pulled, and the tensile load when the porous polyurethane resin (antislip layer 3) is peeled from the fiber base material is pointed out.

  In the present embodiment, a pattern can be applied to the surface of the anti-slip layer 3 as necessary. For example, in the example shown in FIG. 2, a continuous diamond-like pattern is applied. The said pattern is given by apply | coating the ink containing the solvent which melt | dissolves a polyurethane resin to the surface of the slip prevention layer 3. FIG. That is, the skin layer 6 constituting the surface of the anti-slip layer 3 is dissolved in the portion where the ink is applied, and the cell layer 5 (diamond-shaped portion in this embodiment) is exposed on the surface. Therefore, a desired pattern can be given to the surface of the anti-slip layer 3 of the porous polyurethane resin by drawing a desired pattern with the ink. The ink can be applied using, for example, a gravure printing technique.

  In the wet coagulation method and the ink application step, a “solvent that dissolves the polyurethane resin” is used. Examples of the “solvent for dissolving the polyurethane resin” include a solvent containing a dimethylamide polar solvent such as dimethylformamide (DMF) or dimethylacetamide, particularly a solvent containing DMF. In this case, the content of the dimethylamide polar solvent is preferably 70% by weight or more, more preferably 80% by weight or more. Examples of other solvents combined with the dimethylamide polar solvent include nonpolar solvents such as methyl ethyl ketone (MEK), ethyl acetate, and toluene. These solvents may be used alone or in combination of two or more.

  In the embodiment shown in FIG. 2, a part of the cell layer 5 (ink-applied portion) is exposed on the surface of the anti-slip layer 3, and the area occupied by the skin layer 6 is reduced accordingly. However, in this embodiment, since the tackifier is contained in the porous polyurethane resin of the anti-slip layer 3, even if the area occupied by the skin layer 6 is small, the deterioration of the anti-slip performance can be minimized. Here, although there is no limitation in particular as an application area | region of ink, For example, it can be 20 to 80% of the surface of the anti-slip layer 3. Of course, 100% (entire surface) is not a big problem.

  The anti-slip performance of the non-slip sheet 1 can be evaluated by, for example, a method based on JIS K7125. In a preferred embodiment, the anti-slip sheet 1 has a static friction resistance value of 1.5 kg or more measured in a wet state when measured in accordance with JIS K7125 when the total mass of the sliding piece is 1 kg.

  The anti-slip sheet 1 of the present embodiment can be produced, for example, by the following procedure. First, the fiber base material used as the support layer 2 is affixed on a suitable sheet material. On top of this, a wet paint in which a polyurethane resin (with tackifier) is dissolved with a solvent containing DMF is applied. At this time, the wet paint is allowed to enter the fiber base as necessary. This fiber base material is immersed in water or a solution containing water as a main component (for example, 10% DMF). Thereby, DMF in the polyurethane resin is replaced with water (de-DMF), and the polyurethane resin becomes porous. Then, it is washed and dehydrated and dried with hot air. Finally, the sheet material is peeled from the fiber base material. In addition, without using a sheet material, the wet paint may be immersed or applied on the surface of the fiber base material, and then DMF may be removed.

  Next, if necessary, a desired pattern is applied to the surface of the anti-slip layer 3 by a gravure printing technique. As the ink, a solvent containing DMF is used. After the printing is completed, the DMF is completely removed by drying with hot air. Thereby, the anti-slip sheet 1 having a pattern on the surface of the anti-slip layer 3 is obtained.

  The anti-slip sheet 1 of the present invention is used for anti-slip when grasping or grasping an object. Examples of the object used for “holding or grasping an object” include grip tape, gloves, and the like.

  FIG. 3 shows an example of a grip tape made of the anti-slip sheet of the present invention. The grip tape 4 shown in FIG. 3 is manufactured by cutting the non-slip sheet 1 shown in FIG. 1 into a tape shape, and has a thickness of 0.30 mm or less. Further, the constant load elongation in the length direction is in the range of 2 to 30%. Although there is no limitation in particular about the length and width of the grip tape 4, For example, length is about 600-1300 mm and width is about 20-30 mm. For example, the grip tape 4 is wound around a grip 7 such as a ball hitting tool as shown in FIG. Specifically, it is wound around the grip 7 so that the support layer 2 is on the inner side (grip 7 side) and the anti-slip layer 3 is on the outer side (surface). Since the grip tape 4 of the present embodiment has a small thickness and good stretchability in the length direction, a change in the thickness of the grip after winding can be minimized, and the physical strength is also excellent. . Examples of the hitting tool include a badminton racket, a tennis racket, a golf club, a baseball bat, a hockey stick, and the like. Examples of grips other than the ball hitting tool include grips for fishing rods, tools used by grasping with hands, and the like.

  In the grip tape 4, an adhesive layer or a cross-linking adhesive layer may be provided on the surface of the support layer 2 opposite to the anti-slip layer 3 in order to facilitate winding and fixing on the grip.

  On the other hand, examples of the gloves to which the non-slip sheet of the present invention can be applied include soccer goalkeeper gloves, baseball gloves, golf gloves, bicycle gloves, riding gloves, work gloves, and the like. . In the working gloves, the anti-slip sheet of the present invention is extremely thin, and therefore is particularly suitable for precision working gloves. In the case of gloves, the anti-slip sheet of the present invention may be applied to an appropriate location on the palm side (including the fingertip portion), and is not necessarily applied to the entire palm surface. Of course, it does not need to be applied to the back side of the hand.

  In the embodiment described above, the anti-slip layer 3 is formed only on one surface of the support layer 2, but the anti-slip layer 3 may be formed on both surfaces of the support layer 2.

  In the above-described embodiment, a tackifier is included in the porous polyurethane resin constituting the anti-slip layer 3, but the presence or absence of the tackifier is optional.

  EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples, but the present invention is not limited to these examples.

  Five types of non-slip sheets A to E having different types of fiber base materials were produced by the following procedure.

[Types of fiber substrate]
A: Tricot knitted fabric made of 20d nylon fiber having a thickness of 0.15 mm B: Plain woven fabric having a thickness of 0.13 mm C: Polyester nonwoven fabric having a thickness of 0.12 mm and a basis weight of 15 g / m ² D: Thickness 0.27 mm and a basis weight of 50 g / m ² Polyester nonwoven fabric E: polyester nonwoven fabric having a thickness of 0.31 mm and a basis weight of 70 g / m ²

  A fiber base material (support layer) was attached to a sheet material made of polyester taffeta. On top of this, a wet paint having the following composition in which polyurethane resin (with tackifier) was dissolved in DMF was applied. As a result, the wet paint covered the surface of the fiber base material and entered the fiber base material. This was immersed in a 10% DMF coagulation bath at 30 ° C. to remove the solvent (de-DMF) to coagulate the polyurethane resin. Thereafter, the sheet material was peeled off. As a result, five types of anti-slip sheets were produced in which a non-slip layer comprising a porous polyurethane resin layer was formed on a support layer comprising a fiber substrate.

[Composition of wet paint]
-Solution type urethane resin: Trade name MP-105 (solid content: 30%; Tensile strength: 5.5 MPa; DIC Corporation) 100 parts by weight-Colorant (black): Trade name Dairac L6001 (DIC Corporation) 6 parts by weight-Tack Fire: Ester-modified rosin 8 parts by weight Solvent: Dimethylformamide (DMF) 120 parts by weight Auxiliary agent: Surfactant 2 parts by weight

  100 parts by weight of polyester-based liquid (trade name: Rezamin ME3435; composition: 35% by weight polyurethane / 40% by weight DMF / 25% by weight MEK; Dainichi Seika Kogyo Co., Ltd.) and 150% by weight DMF with respect to the resulting non-slip sheet Gravure printing was performed using an etching ink obtained by mixing the parts, and the ink solvent was dried with hot air at 110 ° C. The etching pattern was a sheep leather-toned hole pattern. As a result, an anti-slip sheet having a gravure printed surface was obtained.

  The following physical properties were compared and evaluated for the obtained anti-slip sheets. For comparison, the physical properties of a commercially available ultra-thin grip tape (thickness: 0.33 mm (standard value), 0.40 mm (actual value)) in which the fiber base material is a nonwoven fabric were similarly evaluated.

[Thickness]
The measurement was performed using a small side thickness device CR-10A (Daiei Scientific Instruments Co., Ltd.) in accordance with JIS L1096. The thickness after 10 seconds was measured under a pressure of 23.5 kPa. Measurements were taken at five locations on the sample, and an average value was adopted.

[Tensile strength]
The method was performed in accordance with JIS L1096 A method. Measurement was performed for two types, the vertical direction and the horizontal direction.

[Constant load elongation]
The test was carried out in accordance with JIS L1096 A method under the condition of a constant load of 1 kg. Measurement was performed for two types, the vertical direction and the horizontal direction.

[Elongation at break]
The method was performed in accordance with JIS L1096 A method. Measurement was performed for two types, the vertical direction and the horizontal direction.

[Peel strength]
Use an adhesive tape (width 2.0 cm) having a hot melt resin layer on the back side of the polyester base, and adhere the hot melt resin layer of the adhesive tape to the surface of the anti-slip layer using an iron (about 120 ° C.). did. Thereafter, one end of the adhesive tape is slightly peeled off, the peeled portion is pulled by Autograph AG-LS (Shimadzu Corporation), and the tensile load when the porous polyurethane resin (slip-proof layer) is peeled from the fiber substrate is measured. It was measured. This measured value was defined as peel strength.

[Grip (anti-slip)]
The friction resistance value (equivalent to grip performance) of each anti-slip sheet was measured by a method according to JIS K7125. That is, a 1 kg sliding piece (contact area: 40 cm ² , length of one side: 63 mm) was pasted with the silver surface of the pig skin (pig skin) outside. A non-slip sheet as a sample was attached to a table. The sliding piece was set so that the silver surface of the pig skin hits the sample, and the sliding piece was pulled at 200 mm / min by Autograph AG-LS (Shimadzu Corporation), and the frictional resistance value was measured. Each sample was measured three times, and the average value was adopted. The pig skin used was a one-day curing in an atmosphere at a temperature of 20 ° C. and a relative humidity of 60%. Moreover, the pig skin of the sliding piece was replaced for every test.

  For each anti-slip sheet, two types of samples, a dry state (dry sample) and a wet state (wet sample), were prepared and subjected to the above test. The dry sample was prepared by curing for 1 day in an atmosphere at a temperature of 20 ° C. and a relative humidity of 60%. The wet sample was prepared by immersing in water at room temperature to sufficiently absorb water, and squeezing the nip with 1 kg excess weight.

Table 1 shows the measurement results.

  The non-slip sheet A has a thickness of 0.22 mm, a tensile strength (longitudinal direction) of 90.6 N / 3 cm (30.2 N / cm), and a tensile strength (lateral direction) of 76.5 N / 3 cm (25.5 N / cm). Although it was extremely thin, it had high tensile strength. Furthermore, the constant load elongation rate (longitudinal direction) was 11.3% and the constant load elongation rate (lateral direction) was 10.1%.

  The non-slip sheet B has a thickness of 0.19 mm, a tensile strength (longitudinal direction) of 282.3 N / 3 cm (94.1 N / cm), and a tensile strength (lateral direction) of 113.7 N / 3 cm (37.9 N / cm). Although it was extremely thin, it had high tensile strength. The constant load elongation was not so high. As a comprehensive evaluation, it was considered that it could be used as a grip tape.

  The non-slip sheet C had a thickness of 0.18 mm and was extremely thin. Regarding the tensile strength, the longitudinal direction is 37.2 N / 3 cm (12.4 N / cm), which is a lower value than the non-slip sheets A and B, but considering that the thickness is extremely thin, as a grip tape It was thought that it could be used sufficiently. The constant load elongation (lateral direction) could not be measured because the sample broke.

  The non-slip sheet D had a thickness of 0.32 mm and was larger than the non-slip sheets A, B, and C. In addition, since the thickness was large, the value of tensile strength (longitudinal direction) was large.

  The non-slip sheet E had a thickness of 0.34 mm and was larger than the non-slip sheets A, B, and C. In addition, since the thickness was large, the value of tensile strength (longitudinal direction) was large.

  The thickness of the commercial product was 0.40 mm (actual measurement value), which was larger than the non-slip sheets A, B, and C. Since the thickness was large, the tensile strength value was large.

  Regarding the anti-slip performance, the anti-slip sheets A to E containing the tackifier in the anti-slip layer have high anti-slip performance in both the dry sample and the wet sample, and sufficiently retained the anti-slip performance even in a wet state. . In particular, in the wet state, the anti-slip sheets A to E had a frictional resistance value of 14.7 N (1.5 kg) or more, and high anti-slip properties were maintained. This high anti-slip property when wet is considered to be related to the inclusion of tackifier in the porous polyurethane resin of the anti-slip layer.

  Anti-slip sheet A (thickness: 0.22 mm, fiber base material thickness: 0.15 mm) compared with anti-slip sheet E (thickness: 0.34 mm, fiber base material thickness: 0.31 mm, comparative example) While considering further. First, regarding the tensile strength in the transverse direction, it is 76.5 N / 3 cm in the non-slip sheet A, and is higher than the tensile strength (lateral direction) of the anti-slip sheet E (66.3 N / 3 cm). That is, in the lateral direction, the non-slip sheet A has higher strength despite its smaller thickness.

  Regarding the constant load elongation at the time of 1 kg load, in the non-slip sheet A, the longitudinal direction is 11.3% and the lateral direction is 10.1%, and there is a property of moderate elongation. Therefore, the non-slip sheet A can flexibly follow and deform with respect to an operation of grasping or grasping an object. On the other hand, the non-slip sheet E is low at 0.41% in the vertical direction and 0.85% in the horizontal direction, and does not have the property of extending with low tension. Therefore, it is difficult for the non-slip sheet E to flexibly follow and deform with respect to an operation of grasping or grasping an object.

Regarding the non-slip sheet A, FIGS. 4A to 4C show photographs of the anti-slip layer surface, the support layer surface, and the cross-section, respectively (magnification 100 times). 4 (b) and FIG. 4 (c) also confirm pores made of a porous polyurethane layer. Due to the synergistic effect of the affinity between the pores and the polyurethane resin containing the tackifier, the non-slip sheet A is high. It is thought that anti-slip properties are established. This effect is the same for the non-slip sheets B to E.
From the above, the non-slip sheet A has a high level of thinness, physical strength and suitability for elongation, which are not conventional, and can be said to be a particularly excellent anti-slip sheet.

[Reference example]
Hereinafter, as a reference example, results of testing the anti-slip performance of a porous polyurethane resin layer (anti-slip layer) including a tack fire are shown. This test result can also be applied to the anti-slip sheet and grip tape of the present invention.

  A wet paint (Example, Comparative Example) having the composition shown in Table 2 (unit: part by weight) was applied to the weakly raised surface of the knitted fabric made of Woolley nylon fiber having a thickness of 0.6 mm with a clearance coater. This was immersed in a 10% DMF coagulation bath at 30 ° C. to remove the solvent (de-DMF) to coagulate the polyurethane resin. Further, after washing and dehydration by a roll press, the film was dried under hot air at 120 ° C. Thus, a grip tape base (Example, Comparative Example) having a porous polyurethane resin layer having a thickness of 0.85 mm was obtained.

Each component in Table 2 is as follows.
-Solution type urethane resin A: trade name Chris Bon MP-105 (solid content: 30%; tensile strength: 55 MPa; DIC)
-Solution type urethane resin B: trade name Chris Bon MP-625 (solid content: 30%; tensile strength: 83 MPa; DIC)
-Coloring agent (black): Product name Dirac L6001 (DIC Corporation)
・ Tackifier: Ester-modified rosin ・ Solvent: Dimethylformamide (DMF)
・ Auxiliary agent: Surfactant

  100 parts by weight of polyester-based liquid (trade name: Resamine ME3435; composition: 35% by weight polyurethane / 40% by weight DMF / 25% by weight MEK; Dainichi Seika Kogyo Co., Ltd.) and DMF150 with respect to the obtained grip tape base Gravure printing was performed using an etching ink obtained by mixing parts by weight, and the ink solvent was dried with hot air at 110 ° C. The etching pattern has four patterns: no printing (etching area: 0%), “elk” (etching area: 32%), “diamond” (etching area: 50%), and “entire surface 120L” (etching area: 100%). Seeds. As a result, various grip tape sheets having gravure printing on the surface were obtained.

  In the same manner as described above, the friction resistance value (corresponding to the grip performance) of each grip tape sheet was measured by a method according to JIS 7125. For each grip tape sheet, two types of samples, a dry state (dry sample) and a wet state (wet sample), were prepared and subjected to the above test. The dry sample was prepared by curing for 1 day in an atmosphere at a temperature of 20 ° C. and a relative humidity of 60%. The wet sample was prepared by immersing in water at room temperature to sufficiently absorb water, and squeezing the nip with 1 kg excess weight.

Table 3 shows the measurement results.

As shown in Table 3, the grip tape sheet of the example had a high grip residual ratio of 90% or more in any etching area.
On the other hand, the grip tape sheet of the comparative example not including the tackifier showed only a low grip residual ratio of 85% or less in any etching area. In particular, the smaller the etching area, the more remarkable the decrease in grip residual ratio.

1 Non-slip sheet 2 Support layer 3 Anti-slip layer 4 Grip tape

Claims (13)

  An anti-slip sheet in which an anti-slip layer made of a porous polyurethane resin is formed on at least one surface of a support layer made of a fiber substrate, and is used for anti-slip when gripping or grasping an object, and has a thickness of 0 A non-slip sheet having a tensile strength of 30 N / 3 cm or more according to JIS L1096 A method in at least one direction.   The anti-slip sheet according to claim 1, wherein the constant load elongation according to JIS L1096 A method is in the range of 2 to 30% when the constant load is 1 kg in at least one direction.   An anti-slip sheet in which an anti-slip layer made of a porous polyurethane resin is formed on at least one surface of a support layer made of a fiber substrate, and is used for anti-slip when gripping or grasping an object, and has a thickness of 0 A non-slip sheet characterized by having a constant load elongation according to JIS L1096 A method in the range of 2 to 30% when a constant load is 1 kg in at least one direction.   The anti-slip sheet according to any one of claims 1 to 3, wherein a part of the porous polyurethane resin constituting the anti-slip layer has entered the inside of the fiber base material.   The non-slip sheet according to any one of claims 1 to 4, wherein the fiber base material is a knitted fabric.   An anti-slip sheet in which an anti-slip layer made of a porous polyurethane resin is formed on at least one surface of a support layer made of a fiber substrate, and is used for anti-slip when gripping or grasping an object, and has a thickness of 0 A non-slip sheet characterized in that it is 30 mm or less and the fiber base material is a knitted fabric.   The anti-slip sheet according to claim 6, wherein a part of the porous polyurethane resin constituting the anti-slip layer has entered the inside of the fiber base material.   The anti-slip sheet according to any one of claims 1 to 7, wherein the anti-slip layer has a peel strength of 3 N / cm or more.   The anti-slip layer according to any one of claims 1 to 8, wherein the anti-slip layer made of a porous polyurethane resin is formed by a wet coagulation method, and the porous polyurethane resin contains a tack fire. Sheet.   The fiber base material is impregnated or coated with a solution in which the polyurethane resin and tackifier are dissolved in a solvent that dissolves the polyurethane resin, and then immersed in water or a solution containing water as a main component, and is made of a porous polyurethane resin. The anti-slip sheet according to claim 9, wherein an anti-slip layer is formed.   11. The slip according to claim 9, wherein a static friction resistance value measured by a method according to JIS K7125 when the total mass of the slide piece is 1 kg in a wet state is 1.5 kg or more. Stop sheet.   The anti-slip sheet according to any one of claims 9 to 11, wherein an ink containing a solvent capable of dissolving a polyurethane resin is applied to the surface of the anti-slip layer to give a desired pattern.   A grip tape comprising the anti-slip sheet according to claim 1.