JPH11276639A - Partial clear coating method for golf ball and golf ball - Google Patents

Abstract

(57) [Summary] [Solution] A clear paint is supplied and filled in the engraving of a coating plate having an engraving of a size to be painted, and an elastic transfer body is pressed against the engraving position on the coating plate,
As a result, the clear paint in the engraving is transferred to the pressed surface of the transfer body, and the pressed surface of the transfer body to which this paint has transferred is pressed against the coating position of the golf ball, so that the paint on the ball surface is painted A method of partially clearing a golf ball, wherein the method is applied. According to the present invention, it is possible to form a coating film beautifully and to perform partial clear coating of a golf ball with less waste of paint.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for clear coating a limited portion on the surface of a golf ball and a golf ball coated with the coating, and more particularly to a golf ball suitable for protecting original marks on an original ball. And a golf ball coated by the method.

[0002]

2. Description of the Related Art On the surface of a golf ball, there are displayed marks made up of figures, symbols, characters, and the like, such as a brand name representing a manufacturer and a product type, a ball number, and the like.

[0003] After the marking is completed, the golf ball is subjected to clear coating (coating with a transparent paint) for the purpose of protecting the ball surface including the mark position and improving the appearance. In this clear coating, the ball is usually applied by spraying while the ball is placed on a needle point on a needle base.

[0004] On the other hand, in recent years, with the increase in the number of players due to the popularization of golf games, various original marks such as images of players 'names and face photographs, and players' favorite graphics and symbols have been individually made to order. There is an increasing demand for original balls (so-called on-name balls).

[0005] The original marks of the original ball are usually added as needed according to the order in a limited area of the margin area of the finished ball which has already been subjected to clear coating. Also, in order to prevent the marks from being peeled or stained, it is necessary to partially apply a clear coating again, and as a coating method, brush coating or spray coating is generally performed.

However, in the above-mentioned coating method, brush coating is usually performed manually, so that the thickness of the coating film is not stable, and rubbing at the brush end may cause bleeding of marks. It is conceivable to use a paint that does not bleed, but on the contrary, the durability deteriorates and brush marks become a problem.

[0007] In spray coating, particles are attached to the periphery of the applied portion in a dotted manner, resulting in a dull part called "cloudiness", which impairs the appearance. Since the ratio is as low as 10 to 40%, there are many drawbacks such as waste of paint and difficulty in controlling the thickness of the coating film.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and provides a method of partially clearing a golf ball, in which a coating film is formed beautifully and the paint is little wasted, and a golf ball coated by the method. The purpose is to do.

[0009]

SUMMARY OF THE INVENTION The present invention provides the following method for partially clearing a golf ball and a golf ball to achieve the above object.

Claim 1: A clear coating is supplied and filled into the engraving of the coating plate having an engraving of the size to be painted, and an elastic transfer body is pressed into the engraving position on the coating plate, thereby engraving. Transfer the clear paint inside to the pressing surface of the transfer body, and press the pressing surface of the transfer body to which this paint has transferred against the coating position of the golf ball to apply the paint on the ball surface to be painted A method for partially clearing a golf ball, the method comprising:

In another preferred embodiment, the clear paint is a urethane paint based on at least one resin selected from polyester, acrylic resin and polyether, and the paint has a viscosity at 20 ° C. of 10 to 100 mPa · s. The method for partially clearing a golf ball according to claim 1.

In a preferred embodiment, the clear paint has a wettability that does not repel on the surface of the transfer body when the clear paint is transferred to the elastic transfer body.

(4) The method of partially clearing a golf ball according to any one of (1) to (3), wherein the thickness of the coating after coating is 3 to 20 μm after drying.

A fifth aspect of the present invention is a method of partially clearing a golf ball, wherein the same position on the surface of a golf ball is painted by repeating the painting procedure according to any one of the first to fourth aspects a plurality of times. Method.

(6) A golf ball coated by the method according to any one of (1) to (5).

According to the present invention, a coating film having an excellent appearance and a uniform thickness can be efficiently applied to a limited portion on the surface of a golf ball.

That is, a clear paint is supplied and filled in the engraving of the coating plate having the engraving of the size desired to be painted, and the elastic transfer body is pressed against the engraving position on the coating plate, whereby the engraving in the engraving is performed. By transferring the clear paint to the pressing surface of the transfer body and pressing the pressing surface of the transfer body to which the paint has transferred against the coating position of the golf ball, to apply a clear coating to a portion of the ball surface to be coated, Preferably, the above-mentioned coating procedure is repeated a plurality of times, and the coating is performed at the same position on the surface of the golf ball so that the marks are not damaged. Since the coating can be performed and the coating rate of the coating is high, there is no waste of the coating.

The present invention is suitable as a partial clear coating method for protecting a limited portion on a golf ball surface, particularly an original mark of an original ball.

Further, the golf ball to which the partially clear coating of the present invention has been applied is provided with a coating film having a substantially uniform thickness at the dimple position through the bottom and the periphery of the dimple and an intermediate position between the two. Can be formed irrespective of the outer portion of the mark, and high quality marks are clearly displayed.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. 1 to 4 show cross-sectional views of a coating plate 1 and a transfer body 5 (only in FIGS. 3 and 4) used in the method of partially clearing a golf ball of the present invention. An engraving 2 having a desired width (size, for example, diameter when the engraving is circular, width when the engraving is square) w is provided, and the engraving 2 is formed so that the clear paint 3 can be filled therein. In this case, the material of the coating plate is not particularly limited, but is preferably a hard material formed of metal, resin, or the like.

Of course, the engraving 2 must have a width (size) w sufficient to cover the marks provided on the clear painted surface of the golf ball. When (size) is v, it is necessary to have a relationship of w> v, and the planar shape is formed into various shapes such as a circle, a triangle, a square, and a rectangle in accordance with the shape of the marks. . Specifically, the engraving width w has the above relationship, and the engraving depth d is 10 to 100 μm, preferably 30 to 75 μm. In this embodiment, a circular engraving having a width (diameter) w of 28 mm and a depth d of 50 μm is formed.

In the engraving 2 of the coating plate, the clear coating material 3 is supplied and filled by a usual method. The filling of the clear paint into the engraving does not need to be performed particularly precisely, and as shown in FIG. 1, the paint may be filled somewhat more than the engraving protrudes from the engraving.

As shown in FIG. 2, the blade 4 is provided so as to be slidable on the surface of the coating plate 1, even if the engraving 2 is filled with the paint 3 in a large amount. 2 can be slid in the direction of arrow A in FIG. 2 by the operation of a driving device (not shown) to remove excess paint 3 ′. As a result, the engraved void volume is accurately filled with the clear paint 3 in an appropriate amount. In addition,
The removal of the excess clear paint may be performed manually.

Here, the clear paint is prepared by a urethane paint based on a resin selected from one of polyester, acrylic resin and polyether, or a mixture of two or more. And in order to improve abrasion resistance, the molecular weight of the resin component is 20,000-25,000,
It is desirable that the OH value (hydroxyl value) is 100 to 200.

The clear paint has a viscosity at 20 ° C. of 1
The range is preferably from 0 to 100 mPa · s, particularly preferably from 30 to 70 mPa · s. If the viscosity of the paint is out of the above range, the transfer of the paint to the pressing surface of the transfer body may be hindered, the coating rate of the paint on the ball surface may be reduced, or the residual paint may increase. The clear paint used in this example is a urethane paint based on a polyester resin, and has a viscosity at 20 ° C. of 58 mPa · s. The viscosity was measured by DIGITA manufactured by Tokinac Co., Ltd.
Using L VISCOMTER DVL-BII,
Rotor: No. 2. Setting the number of rotations: 60.

The elastic transfer member 5 is pressed against the engraving position of the coating plate 1 in a state where the clear paint is filled in an appropriate amount in the engraving in this manner (see FIG. 3), whereby the pressing surface 5a of the transfer member is pressed. The necessary amount of the clear paint 3a is transferred (to adhere the clear paint) (see FIG. 4).

In this case, as shown in FIGS. 3 and 4, the transfer body 5 is provided so as to be movable in the vertical direction (directions of arrows B and C) in the figure by a driving device (not shown).

The transfer member 5 is formed of a soft elastic member such as rubber, and is preferably, for example, silicone rubber having a JIS-A hardness of 3 to 30 degrees. Further, it is preferable that the front end of the transfer body is formed in a shape corresponding to the width (size) and shape of the engraving, and the pressing surface 5a of the transfer body is a flat surface having a slightly rounded shape. Note that only the leading end of the transfer body may be an elastic member.

In order to conveniently transfer the required amount of paint to the pressing surface of the transfer member, the pressing surface 5a of the transfer member is required.
However, it is preferable to have appropriate wettability (surface tension) which does not repel paint. This wettability is 25-35 μN / cm
It is preferred that If the surface tension is less than 25 μN / cm, the paint will repel on the pressing surface of the transfer body, and when transferred to a ball, the surface may be rough or the required amount of paint may not be transferred. May not be transferred to a ball, or a coating film having a uniform thickness may not be formed. In this embodiment, J
A transfer member made of silicone rubber having an IS-A hardness of 12 degrees and a surface tension of 30 μN / cm is used. In the wettability test in this example, since it is difficult to prepare a test piece,
The transfer was performed on the pressing surface of the transfer body, and in that case, a wetting reagent manufactured by Think Engineering Co., Ltd. was used.

When the paint was transferred to the pressed surface of the transfer member, as shown in FIG.
Paint may remain on the bottom and walls of the
In this respect, there is no problem at all, and the painting can be continued as it is.

In this way, a clear coating is performed on a portion to be coated (marking position M) on the ball surface by using the transfer body 5 in which the required amount of the paint has been transferred from the engraving of the coating plate to the pressed surface. In this case, the coating method of the present invention is suitable for partial clear coating of a golf ball. Full name,
It is suitably used for the purpose of protecting the original marks of an original ball provided with various original marks such as an image of a face photograph or a player's favorite figure or symbol.

In order to partially and again clear-paint the original marks applied to the limited area of the blank area on the surface of the finished ball after the clear painting, the ball is positioned prior to painting. There is a need. This positioning may be performed using a known ball positioning device,
Alternatively, the work may be performed manually.

Then, a partially clear coating is performed on the positioned golf ball G. In this case, FIGS.
As shown in the figure, the transfer body 5 having the paint transferred to the pressed surface
The pressing surface 5a is pressed to the marking position M by the operation of a driving device (not shown) (in the direction of arrow D in FIG. 5), and then the transfer device 5 is retracted in the direction of arrow E in FIG. 6 by the operation of the driving device. Thereby, the coating film 3b is formed at the marking position M on the ball surface. 5 and 6
A clear coating is applied to the entire surface of the ball, and although not shown, a large number of dimples are formed.

Although the paint may slightly remain on the pressing surface 5a of the transfer body after the coating (3c in FIG. 6), there is no particular problem. If the paint remains on the bottom of the engraving of the coating plate, it can be removed by a conventional method.

Next, the method of partially clearing a golf ball according to the present invention will be described. As shown in FIG. 1, a clear coating is formed in the engraving 2 of the coating plate 1 provided with the engraving 2 of a desired size. 2, the excess paint 3 'is removed by sliding the blade 4 in the direction of arrow A on the paint plate as shown in FIG. 2 to adjust the paint quantity to an appropriate value.

In this state, as shown in FIG. 3, the elastic transfer member 5 is pressed against the engraving position on the coating plate 1, and thereafter, as shown in FIG. Pressing surface 5a of the clear paint in the transfer body
To the required amount.

Then, as shown in FIG. 5, the pressing surface 5a of the transfer body on which the required amount of paint has been transferred is pressed against the coating position (marking position M) of the golf ball G, and thereafter, as shown in FIG. By retreating the transfer body 5 as described above, it is possible to apply a coating to a portion to be painted (marking position M) on the ball surface.

In this case, a coating film having a required thickness can be generally formed by performing the above-mentioned coating procedure once. However, if a desired coating film thickness cannot be obtained, the same coating procedure is repeated a plurality of times as appropriate. Can form a sufficient amount of coating film.

That is, by repeating the above-mentioned coating procedure a plurality of times, the same position on the golf ball surface can be partially overlapped and the clear clear coating can be carried out. A coating film having a substantially uniform thickness can be formed regardless of the mark portions and the outside portions of the marks through the intermediate position of the mark.

According to the coating method of the present invention, the coating film can be formed beautifully, the coating material can be efficiently coated with little waste, and the coating can be performed manually as in the case of the conventional brush coating. Because of this, the thickness of the paint film is not stable, and bleeding occurs at the marks due to rubbing at the tip of the brush, or the durability when using a paint that does not bleed the marks, or the brush trace remains The problem described above does not occur.

Further, as in the conventional spray coating, particles adhere to the peripheral portion of the coated portion in a dotted manner, resulting in a dull portion called "cloudiness", which impairs the appearance and lowers the coating rate. Therefore, it is possible to effectively avoid the drawback that the paint is wasted and that it is difficult to control the thickness of the coating film.

The golf ball to which the partially clear coating of the present invention is applied has a uniform coating thickness and a high quality with excellent appearance. After drying), from the viewpoint of protection of marks,
It is 20 μm, preferably 6 to 10 μm.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various changes may be made without departing from the spirit of the present invention.

[0044]

According to the present invention, a coating film can be formed beautifully and a partial clear coating of a golf ball with less waste of paint can be performed.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a state in which a coating plate according to an embodiment of the present invention is filled with a paint.

FIG. 2 is a cross-sectional view showing a state where excess paint is removed from the coating plate.

FIG. 3 is a cross-sectional view showing a state where a transfer body is pressed against the coating plate.

FIG. 4 is a cross-sectional view showing a state where a paint is transferred to a pressing surface of the transfer body.

FIG. 5 is a cross-sectional view showing a state where a transfer body is pressed against the surface of the ball.

FIG. 6 is a sectional view of the ball after the painting.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Painting plate 2 Engraving 3 Paint 4 Blade 5 Transfer body G Golf ball M Marking position

──────────────────────────────────────────────────続 き Continued on front page (51) Int.Cl. ⁶ Identification code FI B44C 1/165 B44C 1/165 J

Claims (6)

[Claims] 1. A clear coating is supplied and filled in the engraving of a coating plate having an engraving of a size to be painted, and an elastic transfer body is pressed against the engraving position on the coating plate.
As a result, the clear paint in the engraving is transferred to the pressed surface of the transfer body, and the pressed surface of the transfer body to which this paint has transferred is pressed against the coating position of the golf ball, so that the paint on the ball surface is painted A method of partially clearing a golf ball, wherein the method is applied. 2. The clear paint is a urethane paint based on at least one resin selected from polyester, acrylic resin and polyether, and the paint has a viscosity at 20 ° C. of 10 to 100 mPa · s. 2. The method for partially clearing a golf ball according to 1. 3. The method according to claim 1, wherein when the clear paint is transferred to the elastic transfer body, the clear paint has wettability that does not repel on the surface of the transfer body. 4. The coating film thickness after coating is 3 to 3 after drying.
The method for partially clearing a golf ball according to any one of claims 1 to 3, wherein the thickness is 20 µm. 5. A method for partially clearing a golf ball, comprising coating the same position on the surface of a golf ball by repeating the coating procedure according to claim 1 a plurality of times. 6. A golf ball coated by the method according to claim 1.