KR20050005327A - Phosphorescent golf ball - Google Patents

Abstract

PURPOSE: A phosphorescent golf ball is provided to emit light in a dark place and to regulate a direction and a distance of the ball upon a shot, so that a position of the golf ball is easily checked even in dark place without a poor lighting. CONSTITUTION: The phosphorescent golf ball(10) includes a core(12) having a rubber and an outer layer(14) having a synthetic rubber and phosphorescent pigment containing SrAl2O4, the outer layer being formed on the core with an extrusion molding. The outer layer is composed of 73 to 93 weight part of synthetic rubber and 5 to 25 weight part of phosphorescent pigment based on 100 weight part of the outer layer. The outer layer further includes an additive selected from a group including inorganic pigment and a coloring agent. An intermediate layer including a rubber is additionally disposed between the core and the outer layer.

Description

Phosphorescent Golf Ball {PHOSPHORESCENT GOLF BALL}

The present invention relates to a luminescent golf ball, and more particularly, to a luminescent golf ball that can be used in a place where the brightness of the light is lacking by accumulating light.

In general, the golf balls currently used are white. During the daytime, the eyes can identify the direction the ball is flying by natural light, so it is easy to find the ball after swinging. However, a separate lighting device is required to allow a player to see the ball at dawn when natural light is lacking, at night when natural light disappears, or on a cloudy day when natural light is not high. In such a case, even if the lighting device is installed in the golf course, it is not possible to irradiate light with the brightness similar to the day of the sunny day throughout the golf course. In addition, the lighting near the tee shot point of each hall is bright, but there is not enough lighting in other areas such as the inter-hall area. Therefore, when playing a golf game at night, it is difficult to visually check the flight direction of the golf ball, it was difficult to identify the location of the golf ball, there was a difficulty when performing the golf game.

In order to solve the above problems, a golf ball having a light emitting surface layer formed on its surface, or a golf ball treated with a luminous material on its surface is known.

Meanwhile, ionomer resin or balata rubber is mainly used as the outer surface of the golf ball. Ionomer resin is a thermoplastic developed by Dupont in the United States in 1967 and is sold under the trade name Surlyn. The golf ball made of ionomer resin keeps its shape once it is cast, so it is hard and durable. However, due to the small contact surface at impact, it is difficult to adjust the ball in the desired direction or distance.

There are two types of balata rubber, natural rubber and synthetic rubber. Natural balata rubber is derived from Paracuum, a tropical tree native to South America. However, the ball using the natural balata rubber as the outer shell has a disadvantage in that the shape of the ball is deformed even in a short time of play, and synthetic balata rubber is used a lot recently. The ball made of Valata as an outer shell is less durable than the ionomer resin, but has a good feel. Ballata ball has a smooth surface, so when the ball is hit with a golf club, the contact time with the club surface is relatively long, so the amount of spin is easier to control the ball.

Korean Utility Model Registration No. 20-187825 discloses a photoluminescent golf ball composed of ionomer resin, photoluminescent material, pigment and colorant, which can enjoy golf even at night by emitting light for a long time.

Since the golf ball is based on the ionomer resin as the outer layer, the golf ball can increase the distance, but it is difficult to control the golf ball in the desired direction and distance. Therefore, it can be used even at night containing a photoluminescent material, golf ball that can adjust the ball in the desired direction and distance is required.

The present invention has been made to solve the above problems, an object of the present invention is to provide a luminescent golf ball that can emit light in a dark place and can adjust the direction and distance to the ball.

1 is a partial cutaway perspective view of a photoluminescent two-piece golf ball according to the present invention.

2 is a cross-sectional view of a photoluminescent two-piece golf ball according to the present invention.

3 is a partial cutaway perspective view of a photoluminescent three-piece golf ball according to the present invention.

4 is a cross-sectional view of a photoluminescent three-piece golf ball according to the present invention.

5 is a front view of a photoluminescent golf ball according to the present invention.

<Explanation of symbols for the main parts of the drawings>

10, 20, 30, 40, 50: golf balls 12, 22, 32, 42: core

33, 43: intermediate layer 14, 24, 34, 44: outer layer

55: dimple

In order to achieve the object of the present invention described above, the phosphorescent golf ball according to a preferred embodiment of the present invention is a core containing a rubber, and a phosphorescent pigment containing Valata synthetic rubber and SrAl ₂ O ₄ It includes an outer layer comprising, is produced by extrusion molding the outer layer to the core.

When using the phosphorescent golf ball according to the present invention, the golf ball can be easily identified even in a dark place by the luminous effect of SrAl ₂ O ₄ , free to play golf even at dawn or at night, and only a sunny day rich in natural light In addition, it is convenient because the location of the ball can be easily identified even on a cloudy day. In addition, since the balata synthetic rubber is used as the outer layer, the direction and distance of the golf ball can be easily adjusted.

Hereinafter, with reference to the accompanying drawings, the phosphorescent golf ball according to an embodiment of the present invention will be described in detail, but the present invention is not limited or limited by the following embodiments.

1 is a partially cutaway perspective view of a photoluminescent two piece golf ball according to the present invention.

Types of golf balls used in golf games include one-piece balls, two-piece balls, three-piece balls and four-piece balls, and two- and three-piece balls are commonly used. The two-piece hole includes a core and a surface that is a synthetic resin. The three-piece hole has a rubber core or a rubber ball containing liquid in the core, the surface of which is wound with a rubber line, and then covered with synthetic resin.

The photoluminescent two-piece golf ball 10 according to the invention comprises a core 12 and an outer layer 14.

The core 12 is made of a material comprising rubber, and the outer layer 14 is made of a material comprising a balata synthetic rubber and a photoluminescent pigment. The photoluminescent pigment contained in the outer layer 14 contains SrAl ₂ O ₄ . SrAl ₂ O ₄ is a photoluminescent pigment for luminous paints, and examples thereof include LUMINOVA products sold by Stone Nemoto Co., Ltd. The photoluminescent pigment is a substance capable of visually confirming afterglow for a long time even after stimulation such as ultraviolet rays is stopped. The photoluminescent pigment is disclosed in Japanese Patent Laid-Open No. 7-11250 (published January 13, 1995).

When the amount of the balata synthetic rubber is less than 73 parts by weight or the amount of the photoluminescent pigment is more than 25 parts by weight based on 100 parts by weight of the outer layer 14, the photoluminescent property of the manufactured photoluminescent golf ball is improved to exhibit high brightness. Can be obtained, but the production cost is high because the amount of the photoluminescent pigment is increased. If the amount of the balata synthetic rubber is more than 93 parts by weight or the amount of the photoluminescent pigment is less than 5 parts by weight based on 100 parts by weight of the outer layer 14, there is no sufficient brightness to identify the ball at night competition. Accordingly, the outer layer 14 includes 73 to 93 parts by weight of the balata synthetic rubber and 5 to 25 parts by weight of the photoluminescent pigment based on 100 parts by weight of the outer layer. More preferably, the outer layer 14 includes 80 to 90 parts by weight of the balata synthetic rubber and 10 to 20 parts by weight of the photoluminescent pigment based on 100 parts by weight of the outer layer.

The outer layer 14 may further include an additive selected from the group consisting of inorganic pigments and colored pigments. The additive may be present in less than 2 parts by weight based on 100 parts by weight of the outer layer 14.

The photoluminescent two-piece golf ball 10 according to the present invention is manufactured by extruding the outer layer 14 to the core 12.

2 is a cross-sectional view of a photoluminescent two-piece golf ball according to the present invention. Referring to Figure 2, the photoluminescent two-piece golf ball 20 according to the present invention comprises a core 22 comprising rubber and an outer layer 24 comprising synthetic rubber and a photoluminescent pigment. As described above, the core 22 comprises rubber, the outer layer 24 comprises a phosphorescent pigment comprising Valata synthetic rubber and SrAl ₂ O ₄ , and the phosphorescent two-piece golf ball 20 The outer layer 24 is produced by extrusion molding to the core 22.

The photoluminescent golf ball according to the present invention may further include an intermediate layer including rubber between the core and the outer layer. By molding the intermediate layer, the photoluminescent golf ball according to the present invention may be manufactured into a three-piece ball.

3 is a partial cutaway perspective view of a photoluminescent three-piece golf ball according to the present invention.

The photoluminescent three-piece golf ball 30 according to the present invention includes a core 32, an intermediate layer 33 and an outer layer 34.

The core 32 is made of a rubber-containing material, and the intermediate layer 33 is made of a rubber-containing material in the form of a yarn. The outer layer 34 is made of a material comprising a balata synthetic rubber and a photoluminescent pigment.

The photoluminescent pigment included in the outer layer 34 includes SrAl ₂ O ₄ . SrAl ₂ O ₄ is a photoluminescent pigment for luminous paints, and examples thereof include LUMINOVA products sold by Stone Nemoto Co., Ltd. The photoluminescent pigment is as described above.

If the amount of the balata synthetic rubber is less than 73 parts by weight or the amount of the photoluminescent pigment is more than 25 parts by weight based on 100 parts by weight of the outer layer 34, the photoluminescent golf balls may have improved photoluminescence and exhibit high brightness. Can be obtained, but the production cost is high because the amount of the photoluminescent pigment is increased. If the amount of the balata synthetic rubber is more than 93 parts by weight or the amount of the photoluminescent pigment is less than 5 parts by weight based on 100 parts by weight of the outer layer 34, there is not enough luminance to identify the ball at night competition. Accordingly, the outer layer 34 includes 73 to 93 parts by weight of the balata synthetic rubber and 5 to 25 parts by weight of the photoluminescent pigment based on 100 parts by weight of the outer layer. More preferably, the outer layer 34 includes 80 to 90 parts by weight of the balata synthetic rubber and 10 to 20 parts by weight of the photoluminescent pigment based on 100 parts by weight of the outer layer.

The outer layer 34 may further include an additive selected from the group consisting of inorganic pigments and colored pigments. The additive may be present in less than 2 parts by weight based on 100 parts by weight of the outer layer.

The photoluminescent two-piece golf ball 30 according to the present invention is manufactured by extruding the outer layer 34 to the core 32 and the intermediate layer 33.

4 is a cross-sectional view of a photoluminescent three-piece golf ball according to the present invention. Referring to FIG. 4, the phosphorescent two-piece golf ball 40 according to the present invention includes a core 42, an intermediate layer 34, and an outer layer 44 including synthetic rubber and a photoluminescent pigment. As described above, the core 42 comprises rubber, the intermediate layer 43 comprises rubber, and the outer layer 44 comprises a photoluminescent pigment comprising Valata synthetic rubber and SrAl ₂ O ₄ , wherein The photoluminescent two-piece golf ball 40 is manufactured by extruding the outer layer 44 onto the core 42 and the intermediate layer 43.

5 is a front view of a photoluminescent golf ball according to the present invention.

The phosphorescent golf ball 50 according to the present invention may be a two-piece golf ball consisting of a core and an outer layer, or a three-piece golf ball consisting of a core, an intermediate layer, and an outer layer. In each case, the outer layer comprises a core comprising rubber and a photoluminescent pigment comprising Valata synthetic rubber and SrAl ₂ O ₄ . The outer layer of the golf ball 50 has a dimple (dimple) (55), the dimple gives a lift to the golf ball to make the ball stay in the air for a long time to make a large distance.

Hereinafter, the present invention is illustrated by the following examples, but the protection scope of the present invention is not limited by the following examples.

Example 1 Preparation of Photoluminescent Two-Piece Golf Ball

A golf ball core made of rubber was prepared. 85 g of Valata synthetic rubber, 15 g of SrAl ₂ O ₄ (LUMINOVA commercially available from Stone Nemoto Co., Ltd.) as a luminous pigment, and 1 g of titanium dioxide and coloring as an inorganic pigment As a pigment, 0.5 g of an orange pigment was added to a mixer and blended for about 5 minutes to prepare a photoluminescent outer layer composition. The outer layer composition was then molded into the core in an extruder to obtain a golf ball.

Example 2 Preparation of Photoluminescent Three-Piece Golf Ball

A golf ball core made of rubber was prepared. The rubber core was wound around the rubber core to form an intermediate layer. 85 g of Valata synthetic rubber, 15 g of SrAl ₂ O ₄ (LUMINOVA commercially available from Stone Nemoto Co., Ltd.) as a luminous pigment, and 1 g of titanium dioxide and coloring as an inorganic pigment As a pigment, 0.5 g of an orange pigment was added to a mixer and blended for about 5 minutes to prepare a photoluminescent outer layer composition. The outer layer composition was then molded into an intermediate layer in an extruder to obtain a golf ball.

Comparative Example 1: Preparation of a photoluminescent two-piece golf ball containing no photoluminescent pigment

A golf ball core made of rubber was prepared. 85 g of a Valata resin, 1 g of titanium dioxide as an inorganic pigment, and 0.5 g of Songwon Industries' pigment as a coloring pigment were added to a mixer and blended for about 5 minutes to prepare a photoluminescent outer layer composition. The outer layer composition was then molded into the core in an extruder to obtain a golf ball.

Comparative Example 2: Preparation of a photoluminescent three-piece golf ball containing no photoluminescent pigment

A golf ball core made of rubber was prepared. The rubber core was wound around the rubber core to form an intermediate layer. 85 g of a balata resin, 1 g of titanium dioxide as an inorganic pigment, and 0.5 g of an orange pigment as a coloring pigment were added to a mixer, and blended for about 5 minutes to prepare a photoluminescent outer layer composition. The outer layer composition was then molded into an intermediate layer in an extruder to obtain a golf ball.

Comparative Example 3 Preparation of Photoluminescent Two-Piece Golf Ball with Ionomer Resin Outer Layer

A golf ball core made of rubber was prepared. 15 g of ionomer resin (trade name SURLYN # 9520DM from DUPONT), a photoluminescent pigment as SrAl ₂ O ₄ (LUMINOVA commercially available from Stone Nemoto Co., Ltd.), an inorganic pigment 1 g of titanium dioxide and 0.5 g of Songwon Industries' pigment as a coloring pigment were added to a mixer and blended for about 5 minutes to prepare a photoluminescent outer layer composition. The outer layer composition was then molded into the core in an extruder to obtain a golf ball.

Comparative Example 4 Preparation of Photoluminescent Three-Piece Golf Ball with Ionomer Resin Outer Layer

A golf ball core made of rubber was prepared. The rubber core was wound around the rubber core to form an intermediate layer. 15 g of ionomer resin (trade name SURLYN # 9520DM from DUPONT), a photoluminescent pigment as SrAl ₂ O ₄ (LUMINOVA commercially available from Stone Nemoto Co., Ltd.), an inorganic pigment 1 g of titanium dioxide and 0.5 g of an orange pigment were added to the mixer as a coloring pigment and blended for about 5 minutes to prepare a photoluminescent outer layer composition. The outer layer composition was then molded into an intermediate layer in an extruder to obtain a golf ball.

Experimental Example 1

The batting experiment was conducted using the golf ball obtained in the above Examples and Comparative Examples. An amateur golf player was allowed to play night games using the golf balls and then evaluate the luminous characteristics. In addition, the ease of adjustment of the golf ball including the hitting distance and directionality was evaluated. The experimental results are shown in Table 1 below.

Example 1 Example 2 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 ingredient Synthetic rubber Valata Valata Valata Valata Ionomer resin Ionomer resin Phosphorescent Pigment ○ ○ - - ○ ○ Luminous properties ◎ ◎ × × ◎ ◎ Ease of Adjustment of Golf Ball ◎ ◎ ◎ ◎ × ×

In Table 1, a mark indicates that it is present as a component,-indicates that it is not present as a component. Experimental results of the luminous properties and the ease of adjustment of the golf ball showed that good is ◎ and bad is ×.

As can be seen from the experimental results, the golf ball according to the present invention has excellent luminous properties because it contains a photoluminescent pigment. Therefore, using the golf ball according to the present invention can perform a golf game even in an environment where natural light is not sufficient. In addition, since the golf ball according to the present invention uses a balata synthetic rubber as the outer layer, the traveling direction and distance of the ball at the time of hitting are easily adjusted.

On the other hand, the golf ball according to the present invention can satisfy the aerodynamics of the golf ball required by the rules of the golf game can be used during the golf game without any restrictions.

As described above, when the golf ball according to the present invention is used, a 24-hour golf game may be performed regardless of the luminance of natural light by the light emission phenomenon of the photoluminescent pigment. You can easily find golf balls hit deep in the rough or in the woods, and you can easily track the Bigger situation when you hit. In addition, by using the ballata rubber other than the ionomer resin can be hit by adjusting the direction and distance of the golf ball.

As described above, although described with reference to a preferred embodiment of the present invention, those skilled in the art will be variously modified without departing from the spirit and scope of the invention described in the claims below. And can be changed.

Claims (4)

A core comprising rubber; And A photoluminescent golf ball comprising an outer layer comprising a Valata synthetic rubber and a photoluminescent pigment comprising SrAl ₂ O ₄ , wherein the outer layer is extruded to the core. According to claim 1, wherein the outer layer is based on 100 parts by weight of the outer layer 73 to 93 parts by weight of balata synthetic rubber; And A photoluminescent golf ball comprising 5 to 25 parts by weight of a photoluminescent pigment containing SrAl ₂ O ₄ . The photoluminescent golf ball according to claim 1 or 2, wherein the outer layer further comprises an additive selected from the group consisting of inorganic pigments and colored pigments. 2. The photoluminescent golf ball of claim 1, further comprising an intermediate layer comprising rubber between the core and the outer layer.