JPS60141584A - Printing method for golf ball - Google Patents

Abstract

PURPOSE:To prevent generation of rejectable articles lacking a part of a mark or a part of a spiral, by a method wherein a mark or a spiral is printed in an ultraviolet-curing type ink on the outside surface of a golf ball, and is irradiated with ultraviolet rays to cure the ink. CONSTITUTION:A golf ball blank material of a spool form, a two-piece type or the like is covered by a layer 4 of a base coating material having a while or other color, and a mark is printed thereon in an ultraviolet-curing type ink such as a UV ink based on a urethane-modified acrylic resin by a tampon printing method. Immediately thereafter, the ink is hardened by irradiating it with UV rays E for a few seconds by a UV lamp 5. Then, a transparent coating material is directly overcoated thereon to provide a protective outer layer 6, followed by drying to produce the golf ball 1. By this method, a ball-coating operation can be finished in a shorter period of time, as compared with a conventional method using a two-pack mixing type ink.

Description

[Detailed description of the invention] The present invention relates to a method of printing on golf balls.

In general, the Kumbo printing method is widely used as a method for printing characters, figures, symbols, etc. (hereinafter simply referred to as marks) such as manufacturer's names, numbers, and brand names on golf balls. That is, the method involves forming an image of printing ink on a concave plate with predetermined marks engraved thereon, transferring it to a kumbo, etc., and then transferring it to the outer surface of the golf ball.
The ink used for this purpose is generally a two-component curing type ink based on urethane resin, as it needs to be sufficiently resistant to club hits and the like.

Such a two-component curing ink has the drawback that ink mixing is troublesome, and after marking is printed until curing is completed,
There were drawbacks such as the need to leave it on a shelf or the like without touching it for half a day to a day. In addition, since it takes time to dry and harden, the balls may collide with each other or come into contact with equipment, resulting in parts of the marks being chipped and defective products being produced.

In addition to the above-mentioned marks, the inks used for the red and blue wire windings applied to driving range golf balls are also of the same two-component curing type and have the same drawbacks.

The present invention overcomes these conventional drawbacks and allows for immediate, manual or manufacturing equipment printing (without waiting time) after printing a mark or wire winding.
The purpose is to make it possible to touch it with inspection equipment, to be able to move on to the next manufacturing or inspection process, to eliminate storage space, and to prevent the occurrence of defective products where part of the mark or part of the wire winding is missing. Therefore, a feature of the present invention is that a mark or wire winding is formed on the outer surface of a golf ball using ultraviolet curable ink, and the ink is cured by irradiating ultraviolet rays.

Hereinafter, the present invention will be explained in detail based on illustrated embodiments.

1 and 2 are general views of a golf ball manufactured by the method according to the present invention. As shown in FIG. 1, marks 2 are formed on the outer surface of the golf ball 1, or as shown in FIG. A driving range golf ball 1 is provided with wire winding 3 as shown in FIG.

First, as shown in FIG. 3, a thread-wound, two-piece, or one-piece golf ball material is coated with a base paint layer 4 of white color or the like. Note that it is also preferable to use a color other than white, such as yellow or orange, for this base paint layer 4.

Next, after drying this paint layer 4, as shown in FIG. 4, marks 2 are formed using ultraviolet curable ink by a known tan printing method. As an ultraviolet curable ink, for example, urethane-modified acrylic resin UV manufactured by Toyo Ink Manufacturing Co., Ltd.
Ink is preferred.

Immediately thereafter, the ultraviolet lamp is applied as shown in FIG.

If the ink is irradiated with ultraviolet E for several seconds at step 5, the ink will harden. For example, Toshiba H200OL/6 ozone-less type can be used as the ultraviolet lamp 5, and the ink was sufficiently cured by irradiation with ultraviolet E for about 2 seconds.

Therefore, the protective outer layer 6 can be immediately formed by overcoating with a transparent paint as shown in FIG. 6 (by omitting the conventional drying step which takes about half a day to -1 day).

When the transparent paint of the protective outer layer 6 is dried, a golf ball is completed, and a golf ball 1 as shown in FIG. 1 is obtained.

Using the above-mentioned urethane modified acrylic resin UV ink manufactured by Toyo Ink Manufacturing Co., Ltd., it was irradiated for 2 seconds with an ultraviolet lamp 5 with a force of 1, and was struck against an iron plate 50 times at a high speed of 45 m and Q small. The test results showed that Mark 2 did not fall off at all, and it was confirmed that the durability (in practical terms - F/11) was 4. This is to prevent the ball from falling off due to impact, and it is desirable to coat the printed mark 2, but in some cases, as shown in FIG. It may also be preferable to print mark 2 in the manner described above.

Although the above example describes the case of mark 2, if the wire winding 3 is drawn on the golf ball with a brush or the like using ultraviolet curable ink and then cured by ultraviolet irradiation, the golf ball for the driving range can be made. can get.

It should be noted that the present invention may be modified in addition to the above-described embodiments, and, for example, the mark 2 in FIG. 4 may be drawn by a method other than the tan printing method.

In particular, if a urethane-modified acrylic resin ink is used as the above-mentioned ultraviolet curable ink, the adhesion to the paint on the surface of the golf ball will be good, and the bending resistance of the ink will improve after curing, thereby preventing marks or lines. The durability of the roll is improved.

As described above, the present invention is a printing method in which marks 2 or wire windings 3 are formed on the outer surface of a golf ball using ultraviolet curable ink, and the ink is cured by irradiating ultraviolet rays E. Unlike mold ink, there is no need to mix the ink (and there is no need for a storage area with drying shelves), and the factory space can be used effectively, allowing the golf ball painting job to be completed in a short time. In addition, it is possible to significantly reduce the occurrence of defective products in which part of the mark is chipped in the uncured state or part of the wire winding is chipped due to collisions between balls or contact with equipment. After printing the roll, it becomes possible to touch the balls immediately with hands or with manufacturing equipment/inspection equipment, which has the great advantage of allowing the ball to be moved to the next manufacturing process or inspection process.

[Brief explanation of the drawing]

1 and 2 are perspective views showing an example of a finished golf ball, and FIGS. 3, 4, 5, and 6 are enlarged cross-sections of essential parts showing an embodiment of the present invention in the order of steps. 7 are sectional views for explaining other embodiments. E...Ultraviolet light, 2...Mark, 3...Wire winding.

Claims (1)

[Scope of Claims] 1. A method of printing on a golf ball, which comprises forming a mark or wire winding on the outer surface of a golf ball using ultraviolet curable ink, and curing the ink by irradiating ultraviolet rays. 2. The method of printing on a golf ball according to claim 1, using a urethane-modified acrylic resin ink as the ultraviolet curable ink.