JP2008110145A - Adhesive for table tennis - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water-soluble adhesive without including an organic solvent for table tennis, the adhesive bonding a table tennis rubber sheet to a table tennis racket together, wherein the adhesive can be applied to the table tennis racket and the table tennis rubber sheet flatly and evenly, and the adhesive left on the surface of the table tennis racket can be easily removed by such a simple method as rubbing by hand without peeling the table tennis racket or table tennis rubber sheet when used or without injuring the surface material of the table tennis racket when the table tennis rubber sheet is re-covered. <P>SOLUTION: The adhesive for table tennis includes polyisoprene as the main component of 25-62 wt.% as the sterling part; rosin ester resin as an adhesive auxiliary component of 0.5-10 wt.% as the sterling part; mannitol as a filler of 0.5-10 wt.% as the sterling part, and water of the remaining wt.%. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

Field of Invention

  The present invention relates to a table tennis adhesive that bonds a table tennis racket and a table tennis rubber.

  A table tennis racket used for table tennis is composed of a table tennis racket (hereinafter referred to as “racquet”) and a table tennis rubber (hereinafter referred to as “rubber”).

  Table tennis rackets are used by attaching rubber to the racket with an adhesive or the like. Rubber is a contact surface with a table tennis ball (hereinafter referred to as “ball”), which deteriorates due to contact with or collision with the ball during practice or competition, and the ball's resilience performance and spin performance are reduced. It becomes necessary to re-paste. In big games such as international games, rubber may be replaced after each game.

The rubber replacement operation is usually performed according to the following procedures (1) to (4).
(1) Remove the rubber from the racket.
(2) The adhesive remaining on the rubber or the racket (hereinafter referred to as “residual film”) is removed.
(3) Apply an adhesive to the rubber and / or racket application surface. At this time, a new rubber may be used.
(4) As soon as bonding becomes possible, the rubber and the racket are bonded together.

Most conventional liquid adhesives for table tennis are solvent-type adhesives in which an adhesive is dissolved in an organic solvent such as heptane, and in the rubber replacement work (3), organics that volatilize from these adhesives. There is a concern about health problems due to exposure to solvents, and in the rubber replacement operation (2), there is a concern about health problems due to organic solvents used to remove the remaining film. Also, Article 86 of the Law stipulates that “things specified by the Ordinance of the Ministry of Land, Infrastructure, Transport and Tourism such as explosives must not be transported by aircraft” and “these properties must not be brought into the aircraft”. However, Article 194 of the Enforcement Regulations of the Law stipulates prohibited properties such as flammable liquids and flammable substances, but the view that organic solvents such as heptane violate the Aviation Law has recently been strengthened. Based on this situation, the Japan Table Tennis Association and ITTF (International Table Tennis Federation) are planning to ban the use of solvent-based adhesives in the near future.

It is an object of the present invention to provide a water-soluble table tennis adhesive that solves the above-mentioned adverse effects of conventional solvent-type adhesives. Specifically, the following (1) to (5) are the subjects.
(1) Providing water-soluble table tennis adhesives that do not contain organic solvents and are harmless to the human body and the environment.
(2) Providing water-soluble table tennis adhesives that can be safely carried without conflicting with aviation laws.
(3) To provide a water-soluble table tennis adhesive that can be applied smoothly and uniformly to a racket and a rubber, and the rubber does not peel off during use.
(4) Providing a water-soluble table tennis adhesive that does not damage the surface of the racket when the rubber is replaced.
(5) To provide a water-soluble table tennis adhesive that can be removed by a simple method such as rubbing the remaining film on the surface of the racket.

  As means for solving the above problems, the table tennis adhesive of the present invention is a table tennis adhesive for bonding a racket and a rubber, and the main component polyisoprene is 25 to 62% by weight as a pure component, A rosin ester resin is contained in a pure content of 0.5 to 10% by weight as an auxiliary component for adhesion, mannitol is contained in a pure component as a pure component in an amount of 0.5 to 10% by weight, and other weight percent of water. .

  According to the present invention, the racket and the rubber can be applied smoothly and uniformly, and the racket and the rubber are not peeled off during use, and the surface of the racket is not damaged at the same time when the rubber is replaced. It is possible to realize a water-soluble table tennis adhesive that can be removed by a simple method such as rubbing the remaining film on the surface.

  The table tennis adhesive of the present invention is a water-soluble adhesive comprising polyisoprene as a main component, a rosin ester resin as an adhesion auxiliary component, and mannitol as a filler.

Specifically, the present invention according to claim 1 is an adhesive for table tennis for adhering a racket and a rubber, and the main component polyisoprene is 25 to 62% by weight as a bonding auxiliary component. It is an adhesive for table tennis in which rosin ester resin contains 0.5 to 10% by weight of pure water, mannitol as a filler contains 0.5 to 10% by weight of water, and other weight percent of water.
As the polyisoprene, for example, isoprene latex manufactured by Sumitomo Seika Co., Ltd., product name “Sepolex IR100” can be preferably used.
As the rosin ester resin, for example, a rosin ester emulsion manufactured by Harima Kasei Co., Ltd., a product name “Hari Star SK-218NS” can be preferably used.
As the mannitol, for example, D-mannitol manufactured by Kao Corporation and the product name “Nikkyo Mannitol Kao” can be preferably used.
Of course, the above-mentioned raw material products are examples of usable raw material products, and are not limited to these raw material products. Other raw material products are suitable if they are equivalent in chemical composition. In addition, it can be used as a raw material product of the intended adhesive. The same applies to the raw material products exemplified below.

The present invention described in claim 2 is the table tennis adhesive according to claim 1, wherein the additive contains 0.1 to 5% by weight of a pure polyvinyl pyrrolidone resin having a K value of 30 to 120. This is an adhesive for table tennis. In this case, the weight% of water decreases by the weight% of the added polyvinyl pyrrolidone resin, and the total becomes 100% by weight. The K value referred to here is a viscosity characteristic value that correlates with the molecular weight, and is a relative viscosity value at 25 ° C. measured by a capillary viscometer.
As the polyvinyl pyrrolidone resin having a K value of 120, for example, a product name “Pitzkor K-120L” manufactured by Daiichi Kogyo Seiyaku Co., Ltd. can be preferably used.
As the polyvinyl pyrrolidone resin having a K value of 90, for example, the product name “Pitzkor K-90” manufactured by Daiichi Kogyo Seiyaku Co., Ltd. can be preferably used.
As the polyvinyl pyrrolidone resin having a K value of 30, for example, the product name “Pitzkor K-30” manufactured by Daiichi Kogyo Seiyaku Co., Ltd. can be preferably used.

The present invention described in claim 3 is the table tennis adhesive according to claim 1 or 2, wherein the thickener is contained in an amount of 0.05 to 1% by weight as an additive. Adhesive. In this case, the weight% of water decreases by the weight% of the added thickener, and the total becomes 100% by weight.
As the thickener, for example, xanthan gum thickener manufactured by Sanki Co., Ltd., product name “Kelzan” can be preferably used.

  The present invention according to claim 4 is the table tennis adhesive according to any one of claims 1 to 3, wherein the surfactant is contained as a pure component in an amount of 0.03 to 1% by weight. It is an adhesive for table tennis. In this case, the weight percentage of water is reduced by the weight percentage of the added surfactant to 100% weight as a whole. As the surfactant, for example, a styrenated phenol surfactant manufactured by Daiichi Kogyo Seiyaku Co., Ltd., a product name “Neugen EA-177” can be preferably used. Further, for example, polyoxyethylene distearate manufactured by Kao Corporation, product name “Emanon 3299V” can be preferably used.

  Hereinafter, the present invention will be described in detail by way of examples and comparative examples of the present invention. However, these examples and comparative examples are merely examples, and the scope of the present invention falls within the scope of these examples and comparative examples. It is not limited.

[Examples 1 to 9]
Polyisoprene (hereinafter referred to as “IR”), rosin ester resin (hereinafter referred to as “SK”), mannitol (hereinafter referred to as “MT”), and water were mixed in the proportions shown in Table 1 to obtain respective water-soluble adhesives. Got. As for the content ratio of each component of the adhesive shown in Table 1, the pure content ratio was expressed in wt%. In addition, although IR used the product name “Sepolex IR100” manufactured by Sumitomo Seika Co., Ltd., the IR concentration in this product is 63 wt% at the maximum, and in Example 3, the IR concentration was 62 wt% It has become.

[Examples 10 to 12]
IR, SK, MT, water, and polyvinylpyrrolidone having a K value of 120 (hereinafter referred to as “PVP-K120”) were mixed in the proportions shown in Table 1 to obtain respective water-soluble adhesives.

[Examples 13 to 15]
IR, SK, MT, water, and polyvinylpyrrolidone having a K value of 90 (hereinafter referred to as “PVP-K90”) were mixed in the proportions shown in Table 1 to obtain respective water-soluble adhesives.

[Examples 16 to 18]
IR, SK, MT, water, and polyvinylpyrrolidone having a K value of 30 (hereinafter referred to as “PVP-K30”) were mixed in the proportions shown in Table 1 to obtain respective water-soluble adhesives.

[Example 19]
IR, SK, MT, water, and a xanthan gum thickener (hereinafter referred to as “XG”) were mixed at a ratio shown in Table 1 to obtain a water-soluble adhesive.

[Example 20]
IR, SK, MT, water, and a styrenated phenol surfactant (hereinafter referred to as “activator SP”) were mixed at a ratio shown in Table 1 to obtain a water-soluble adhesive.

[Example 21]
IR, SK, MT, water, and polyoxyethylene distearate (hereinafter referred to as “active agent DS”) were mixed in the proportions shown in Table 1 to obtain a water-soluble adhesive.

[Comparative Examples 1-5]
IR, SK, MT and water were mixed at the ratios shown in Table 1 to obtain respective water-soluble adhesives.

[Comparative Example 6]
IR, SK, MT, water, and PVP-K120 were mixed at the ratio shown in Table 1 to obtain a water-soluble adhesive.

[Comparative Example 7]
IR, SK, MT, water and PVP-K90 were mixed at the ratio shown in Table 1 to obtain a water-soluble adhesive.

[Comparative Example 8]
IR, SK, MT, water and PVP-K30 were mixed at the ratio shown in Table 1 to obtain a water-soluble adhesive.

[Comparative Example 9]
IR, SK, MT, water and XG were mixed in the proportions shown in Table 1 to obtain a water-soluble adhesive.

[Comparative Example 10]
IR, SK, MT, water and activator SP were mixed in the proportions shown in Table 1 to obtain a water-soluble adhesive.

[Comparative Example 11]
IR, SK, MT, water and activator DS were mixed in the proportions shown in Table 1 to obtain a water-soluble adhesive.

Next, the following evaluation was performed using the water-soluble adhesives obtained in the Examples and Comparative Examples.
(1) Application of water-soluble adhesive to rubber and racket (2) Adhesive strength between rubber and racket of water-soluble adhesive (3) Peelability of rubber and racket (4) Residual film remaining on racket Removability

  In the applicability, whether or not the water-soluble adhesive can be applied smoothly and uniformly to the racket and the rubber was evaluated in five stages shown in Table 2. In addition, regarding the adhesive strength, the adhesive strength between the rubber and the racket of the corresponding water-soluble adhesive was measured, and whether or not it could withstand contact with or collision with the ball was evaluated in five stages. In addition, in the peelability, when the water-soluble adhesive is used, whether or not the rubber can be easily peeled off from the racket without damaging the surface material of the racket was evaluated according to five levels shown in Table 2. . Furthermore, in terms of the removability of the residual film, when using the relevant water-soluble adhesive, when the rubber is removed from the racket, the adhesive remaining on the racket surface is rubbed by hand. Whether it can be removed or not was evaluated in five stages shown in Table 2. The evaluation results are shown in Table 3.

  As is apparent from the evaluation results shown in Table 3, the water-soluble table tennis adhesive provided by the present invention can be applied smoothly and uniformly to the racket and rubber, and the racket and rubber peel off when used. It does not damage the surface material of the racket when replacing the rubber, and at the same time it can be removed by a simple method such as rubbing the remaining film on the surface of the racket by hand. Was found to be a water-soluble table tennis adhesive.

Claims (4)

  A table tennis adhesive for bonding a table tennis racket and a table tennis rubber, the main component of polyisoprene is 25 to 62% by weight, and the rosin ester resin is 0.5 to 0.5% An adhesive for table tennis in which 10% by weight, mannitol as a filler contains 0.5 to 10% by weight of pure water, and other weight% of water.   The table tennis adhesive according to claim 1, comprising 0.1 to 5% by weight of a pure polyvinyl pyrrolidone resin having a K value of 30 to 120 as an additive.   The adhesive for table tennis according to claim 1 or 2, wherein the thickener is contained in an amount of 0.05 to 1% by weight as an additive.   The adhesive for table tennis according to any one of claims 1 to 3, wherein the surfactant is contained in an amount of 0.03 to 1% by weight as an additive.