JP3417877B2 - Light grip sports equipment and manufacturing method thereof - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a relatively small grip force when used, such as a grip for Tobinawa, a club for ground golf, a stick for gateball, a walking stick, a walking stick, a hiking stick, and the like.
Light grip sporting goods and a manufacturing method of the grip.

[0002]

2. Description of the Related Art Conventionally, there are few patents, utility models, baseball bats, golf clubs, ground golf clubs, gateball sticks, walking / hiking / mountain walking sticks, including grips for Tobinawa.
Many techniques are known for grips such as rackets. For example

A. It is a non-slip for gripping baseball bats, golf clubs, rackets, etc. with a latex layer applied by coating on the grip part, but it is a latex material (styrene-butadiene rubber.
Nitrile rubber and the like) are water-repellent, and the anti-slip effect is not sufficiently exerted in a sweaty and wet state.

B. Although it is a golf grip coated with silicone, which has a good affinity with the hand, it does not exhibit the anti-slip effect even in a wet state.

C. Japanese Patent Laid-Open No. 4-253876 A structure used for golf clubs, tennis rackets, etc. of a type in which a cylindrical member made of a thermoplastic resin having an anti-slip effect is inserted into a grip portion, and then contracted by heating to be closely attached to the grip. The present invention is different from the present invention. Furthermore, the shrink tape itself does not exhibit the anti-slip effect in a wet state.

D. JP-A-55-130680 A polyurethane film is formed on one side of a tape material such as leather,
It is a tape for grips such as baseball bats, tennis rackets, pole vault poles, etc. with a pressure sensitive adhesive on the back side, and the grip body part and the anti-slip part are not chemically bonded. On the other hand, in the present invention, the grip body portion and the non-slip imparting portion are chemically adhered, which is a structural difference from JP-A-55-130680.

E. Actually, it is a grip for tennis rackets, golf clubs, etc., which is made by molding a synthetic rubber such as NBR with a super absorbent resin such as an acrylic polymer into a tubular shape and press-fitting it into the grip base. The part and the anti-slip part are not chemically bonded, and there is a clear structural difference. In addition, in the actual Kaihei 6-58967, there is no mention of the durability of the non-slip effect portion.

F. Useful as a grip tape for rackets, golf clubs, etc., in which convex surface made of a synthetic resin elastic body having a desired pattern is provided on the surface of a porous soft sheet formed by coating a non-woven fabric with polyurethane. If it deteriorates, it needs to be replaced, and the anti-slip effect decreases rapidly with time.

G. Jitsuhei 3-52536 A non-slip grip sheet for a racket, etc., in which a transparent protective film is adhered to the non-slip surface of a porous soft sheet made of non-woven fabric, and it is replaced when it deteriorates due to use. It is necessary and the anti-skid effect decreases rapidly with time.

Regarding the grip for Tobinawa, it is known that the grip for Tobinawa has a non-slip effect by physical processing to make the surface of the grip for Tobinawa uneven. In addition, some grip materials for Tobinawa are made of a rubber having viscoelasticity to impart an anti-slip effect.

[0011]

However, considering, for example, the Tobinawa grip, these cannot maintain the anti-slip effect when sweat is present between the grip and the hand, that is, in a wet state. Therefore, in the present condition (physical processing / rubber material), the Tobinawa grip does not have a satisfactory effect particularly under a sweaty and wet condition.

An object of the present invention is, like the grip for Tobinawa, that the grip force at the time of use is relatively small.
Light grip sports grip that provides more slip resistance than before, reduces slippage due to sweat, and reduces grip deterioration due to sweat etc. To do.

[0013]

DISCLOSURE OF THE INVENTION The present invention provides a light-grip sports article in which a non-slip portion is provided on a certain portion of the surface of the grip, the non-slip portion being made of a urethane coating having a thickness of 0.1 to 2 mm. A light-grip sporting article, characterized in that the urethane coating film is a foamed film and a porous film, and the grip base portion and the urethane coating film are chemically bonded and firmly bonded, and a grip thereof. Related to the manufacturing method of.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, the certain part of the surface of the grip means at least a part of the grip that can be held by the palm, and at least that part needs a non-slip part, which varies depending on sports equipment. Although the total length of the grip part varies depending on each sports equipment, the position of the non-slip part is preferably 3 to 10 cm from the grip end in the case of the grip for Tobinawa, and the weight of the urethane film of the anti-slip part is about About 0.5 to 3 g is preferable.

In the case of a golf club for ground golf, the position 15 to 40 cm from the grip end is preferable, and the weight of the urethane film of the non-slip portion is preferably about 1 to 20 g. In the case of a gate ball stick, the position 15 to 40 cm from the grip end is preferable, and the weight of the urethane film of the non-slip portion is preferably about 1 to 20 g.
In the case of a walking / hiking / mountain walking stick, the position of 5-30 cm from the grip end is preferable, and the weight of the urethane film of the non-slip portion is preferably about 1-10 g.

In order to make the urethane coating film of the non-slip portion a foam film and a porous film, for example, in the case of a grip for Tobinawa, first, polypropylene (PP), acrylonitrile / butadiene / styrene (ABS) resin is used. ,
Polyvinyl chloride (PVC), Polycarbonate (PC)
A thermoplastic resin such as blow molding is molded by injection molding or the like to form a hollow grip base, and a hollow portion at one end or both ends of the grip has a material that is not attacked by an organic solvent in which polyurethane is dissolved, such as polyethylene or polypropylene. After capping with a cap such as a product, it is dipped in an organic solvent solution of polyurethane. Then pull it up, put it in water and shake gently,
The organic solvent escapes into water to form pores, and urethane reacts with water to foam and form a porous foamed film. The urethane film is dissolved in the grip base and is chemically bonded to each other, and is firmly bonded so that it is not peeled off even in the scratch test. Then, this is taken out, dried and uncapped. The urethane film can be similarly formed in the case of other ground golf clubs. The thickness of the urethane coating film is 0.1 to 2 mm, preferably 0.5 to 1.5 m
It is about m.

[0017]

The present invention will be specifically described below with reference to Examples and Comparative Examples of the present invention, but the present invention is not limited to these Examples. Example 1 A hollow grip base made of acrylonitrile / butadiene / styrene (ABS) resin (MFR = 4.4 g / 10 min) and having the shape and size shown in FIG. 1 was capped with polypropylene (PP) caps at both hollow ends. . The outside diameter of the non-slip part from the grip end to the position of 100 mm is 20 m
m, the outer diameter from the position 100 mm from the grip end to the position where the rope is fixed is 15 mm. The anti-slip part of this grip was immersed in a dimethylformamide (DMF) solution of ether-based polyurethane for 60 seconds and then pulled up. Then, the product was put into water, shaken slowly and then taken out to obtain a grip of the present invention having a urethane porous membrane having a thickness of 0.8 mm. Urethane film weight is 1.0
It was g.

Comparative Example 1 A grip having a non-foamed coating film was prepared by spray-coating an acrylic urethane paint onto the same ABS resin grip base as used in Example 1. Comparative Example 2 A grip was prepared by winding a commercially available grip tape (ester polyurethane tape) around a PP grip base.

Comparative Example 3 A grip base made of PP was coated with ethylene / vinyl acetate (EV
A) Resin (MFR = 350g / 10min) thickness 0.8
mm of shrink tape was wrapped around and a heat-shrinkable grip was prepared with a dryer. Comparative Example 4 A grip was prepared by winding an SBR-based latex film around a grip base made of PP. Comparative Example 5 For comparison, only the grip made of PP, which was not treated, was evaluated.

Evaluation method A. Table 1 shows the evaluation in a dry environment. 3 subjects (with INF International Now-Abitobi Federation's official certification,
Qualified persons of 3 steps or more) were made to leap forward 3 times 5 times or more, and the ease of gripping each grip was evaluated as follows. ◯: Easy to grip without slipping Δ: Slightly slippery ×: Slippery and difficult to grip B. Table 2 shows the evaluation in a humid environment. In order to investigate the effect of sweat, an appropriate amount of distilled water was dropped on each grip, and the grips were spread evenly and evaluated in the same manner as in a dry environment. ○: Easy to grip without slipping △: Slightly slipping ×: Difficult to grip due to slipping

[0021]

[Table 1]

[0022]

[Table 2]

C. Evaluation of Water Resistance (1) Each Sample Each sample of Example 1 and Comparative Examples 1 and 2 was processed into a strip shape (thickness is 1 to 2 mm) of 2.5 × 5.0 cm. (2) Degradation acceleration method These were left in a thermo-hygrostat at a temperature of 80 ° C. and a humidity of 95% RH, and samples were taken out every certain number of days to evaluate the degree of deterioration.

(3) Degradation Degree Evaluation Method Each sample left for a certain number of days was taken out, and a scratch test was conducted under the following conditions to evaluate the water deterioration resistance. A. Measuring instrument Shinto Kagaku Co., Ltd. Surface measuring instrument HEIDON-14DR
Type B. Measurement conditions (a) Scratch mating material 0.5 mm long × 4.0 mm wide steel jig (b) Load 200 gf (c) Slide speed and distance 10 mm slide at a speed of 200 mm / min

(4) Results Evaluation was performed in five stages according to how the slide area was peeled off after scratching, and the results are shown in FIG. (A) No peeling 5 points (b) 1/4 or less peeling 4 points (c) 1/4 to 1/2 peeling 3 points (d) 1/2 to whole surface peeling 2 points (e) whole peeling 1 point

[0026]

According to the present invention, there is provided a light-grip sporting article which is more durable than conventional ones, has reduced slippage due to sweat, and has reduced grip deterioration due to sweat or the like and has durability. be able to.

[Brief description of drawings]

FIG. 1 is a side view of a grip base used in an example.

FIG. 2 is a graph showing water resistance of samples of Examples and Comparative Examples.

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-11-33143 (JP, A) Registered utility model 3054667 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) A63B 5 / 20 A63B 29/08 A63B 53/14 A63B 69/00

Claims (4)

(57) [Claims] 1. A light-grip sports article in which a non-slip portion is provided on a certain portion of the surface of the grip, wherein the non-slip portion is made of a urethane coating film having a thickness of 0.1 to 2 mm, and the urethane coating film is a foam film. Which is a porous film, wherein the grip base and the urethane coating are chemically bonded and firmly bonded to each other . 2. A light-grip sporting article according to claim 1, wherein the light-grip sporting article is a grip for Tobinawa, a club for ground golf, a stick for gateball, a walking stick for hiking / climbing. 3. The grip base is immersed (dipping) in a solution of polyurethane in an organic solvent, and then pulled up to be placed in water to allow the organic solvent to escape into the water to form pores. React to foam to form a porous foam film, which is then taken out and dried to chemically bond the grip base and the urethane coating.
A method for manufacturing a grip of a light-grip sports article, which is characterized by being firmly joined together. 4. The grip base is dipped in a solution of polyurethane in an organic solvent, and then pulled up to be placed in water to allow the organic solvent to escape into the water to form pores. React to foam to form a porous foam film, which is then taken out and dried to chemically bond the grip base and the urethane coating.
Light grip sports equipment grip that is manufactured by being firmly joined together.