JPH0789214A - Transfer foil for golf ball, production of golf ball using the same and golf ball - Google Patents

Abstract

PURPOSE:To obtain a transfer foil capable of performing low temp. transfer using a flat rubber pad and reacting with isocyanate in a urethane coating soln. at the time of the urethane coating in the next step to make endurable marking on a golf ball of every kind and to provide a golf ball having endurable marking theereon thereto. CONSTITUTION:In the transfer foil 3 used in the marking of a golf ball, a urethane resin with a hydroxyl number of 0.2-15 is used in the ink layer 2 on a film 1 and reacted with isocyanate in a coating soln. during spray coating with a two-pack urethane resin after transfer to make marking on the golf ball. The golf ball is produced using the transfer foil 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer foil used for marking a golf ball, a golf ball manufacturing method using the transfer foil, and a golf ball.

[0002]

2. Description of the Related Art Conventionally, marking of a golf ball is carried out by a direct printing method such as a pad printing method, a transfer method of stamping with a solid solid transfer foil, or a method disclosed in JP-A-53-63137. There is known a thermal transfer printing method in which a transfer foil in which a transfer ink layer having an arbitrary pattern is formed on an arbitrary film is used for printing. Further, in JP-A-57-69087, a nitrified cotton / alkyd resin is used as a main resin, a pigment or a dye is used as a colorant, and a polyethylene powder, a plasticizer and a surfactant are added or dissolved in an organic solvent. A transfer foil for golf balls is disclosed in which a desired ink layer is formed on a polypropylene film with the ink thus formed.

In Japanese Patent Laid-Open No. 183285/1983, polyamide resin, hard resin, acrylic resin,
Polyester resin, and a resin selected from urethane resin and nitrification cotton as the main resin, or vinyl resin or acrylic resin as the main resin, a pigment or dye as a colorant,
Disclosed is a transfer foil for a golf ball, which comprises forming a desired ink layer on a polypropylene film by using an ink prepared by dissolving or dispersing polyethylene powder, an extender pigment, a plasticizer and a surfactant as an additive in an organic solvent. There is.

When the direct printing method such as the pad printing method is multicolored, it is inefficient because each color needs to be dried and the working environment is adversely affected by the use of a solvent, and the image is distorted due to printing on a curved surface. Not stable. In engraving transfer using solid foil, foil breakage during transfer is difficult and burr easily occurs,
Images are also easily distorted. Also, it is not economical because only a small part of the foil is used. In the case of multiple colors, there is a drawback that alignment is difficult.

According to the above-mentioned Japanese Patent Laid-Open No. 63-63137, since a transfer foil has a release layer and an adhesive layer above and below an arbitrary marking pattern, the film is thick and burrs are easily generated. Since the conditions also require high pressure and high temperature, the golf ball, which is the substrate to be transferred, is easily damaged. JP-A-57-
In the transfer method of Japanese Patent No. 69087, although the above-mentioned drawbacks are solved, a transfer temperature of 180 ° C. is required,
Thermal wrinkles are easily formed on the base film of the transfer foil, and the image is easily distorted.

In the transfer method disclosed in JP-A-58-183285, the transfer can be carried out at a lower temperature than that in JP-A-57-69087, but the temperature is as high as 160 ° C., and the biaxially oriented polypropylene ( opp)
Since wrinkles are used, heat wrinkles are still likely to occur. When transferring at a low temperature where heat wrinkles are less likely to occur, missing characters will occur. Also, the rubber pad used during transfer has a curvature of 40 mm.
Although the inner surface of the cylindrical shape is used, when a pad of such a form is used, a special jig is required for the transfer machine, the control of the pad itself is difficult, and the productivity is poor. Also, the resin used in the ink layer does not react with the urethane coating liquid in the next step, so the strength of the image area is weak.

Further, in Japanese Utility Model Laid-Open No. 4-63269,
Polypropylene film has a softening point of 90 ° C to 120 ° C
Of the polyamide resin or the urethane resin having a softening point of 90 ° C. to 100 ° C. as a main binder is used for printing, and a transfer paper for a golf ball is disclosed. However, this is heating and pressurizing with silicon rubber or the like matching the shape of the golf ball, and there is no post-transfer treatment, and the strength of the image area is weak.

Currently, there are three types of states before marking a golf ball. Sandblasted plasma treated ionomer resin surface, ionomer resin surface only plasma treated
Pieces) and those with a white urethane resin coated surface (wound balls). None of the transfer foils of the prior art can transfer to these three types and obtain satisfactory physical properties by subsequent urethane coating.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it can be transferred with a flat rubber pad at a low temperature and reacts with an isocyanate in a urethane coating liquid at the time of urethane coating in the next step. However, a transfer foil capable of marking with resistance and capable of marking on all golf balls, a method of manufacturing a golf ball using the same, and a golf ball with resistance marking obtained by the method are provided. The challenge is to provide.

[0010]

DISCLOSURE OF THE INVENTION The present invention provides a transfer foil used for marking a golf ball, which comprises a base film and an ink layer, and has a hydroxyl value of 0.2 to 15 inclusive. Is a transfer foil for a golf ball, which reacts with isocyanate in a coating liquid during spray coating of a two-component urethane resin after transfer. As an embodiment, 1 to 100 parts by weight of a vinyl chloride / vinyl acetate copolymer is added to 100 parts by weight of the urethane resin in the ink layer, or the urethane resin is added to the ink layer. 10
The above-mentioned transfer foil in which 1 to 30 parts by weight of silica is added to 0 parts by weight can be mentioned.

According to the present invention, the surface of the golf ball is marked with an ink containing a urethane resin having a hydroxyl value of 0.2 or more and 15 or less as a main component.
A two-component urethane resin coating film is formed so as to cover the marking, and the isocyanate group in the two-component urethane resin reacts with the urethane resin in the ink to produce a golf ball. As an embodiment, the ink contains 1 to 100 parts by weight of a vinyl chloride / vinyl acetate copolymer with respect to 100 parts by weight of the urethane resin, or the ink contains 100 parts by weight of the urethane resin. On the other hand, the above golf ball containing 1 to 30 parts by weight of silica can be mentioned.

Further, according to the present invention, any one of the transfer foils described above is used, the transfer foil is superposed on a golf ball, the marking is transferred onto the surface of the golf ball, and then the marking layer is covered to cover the surface of the golf ball. This is a method for producing a golf ball in which a two-component urethane resin coating material is applied and then dried and cured.

The transfer foil will be described with reference to FIG. 1. An ink layer 2 is formed on a base film 1 to form a transfer foil 3. The base film 1 usually used for the transfer foil is polyethylene, polypropylene, polyethylene naphthalate,
Polyethylene terephthalate and the like are used, but it is preferable to use a biaxially oriented polypropylene (OPP) having a thickness of 12 to 50 μm in view of the ease of entering a dimple of a golf ball, proper adhesion with an ink layer, and strength during printing. preferable.

For the ink layer 2, a urethane resin having a hydroxyl value of 0.2 to 15 is used as a vehicle, and a pigment and a dye are used as a coloring agent. Urethane resin is highly flexible, can easily enter into dimples, maintains good adhesion when printing on OPP, and adheres to the surface of the golf ball, which is the substrate to be transferred, with a peeling force between the OPP and the ink layer. Greater than If the hydroxyl value exceeds 15, blocking will occur during printing and production will not be possible. If it is less than 0.2, the strength of the urethane coating solution will be reduced due to the reaction with the urethane coating solution in the later spray coating.

Further, by adding a vinyl chloride / vinyl acetate copolymer or silica to the ink layer, the blocking property can be improved and the peeling force from the base film can be adjusted.

The present invention is a transfer foil for a golf ball as described above,
Using the transfer foil, a marking is transferred to the surface of the golf ball, the marking is covered, a two-component urethane resin paint is applied to the surface of the golf ball, and then the coating is dried and cured. Also, a golf ball provided with a durable marking by using this manufacturing method. The golf ball may be a multi-layer solid golf ball such as a one-piece, two-piece, three-piece golf ball, or a wound golf ball. To mark the surface of the golf ball with the transfer foil of the present invention, it is preferable to use an up-down transfer machine. The coating of the urethane resin paint is not particularly limited, but spray coating is preferable. As the two-component urethane resin paint, a known one can be used.

[0017]

By using the transfer foil for a golf ball of the present invention, it becomes possible to mark the surface of the golf ball with a flat rubber pad at a low temperature. In addition, the marking part has good wettability with the coating liquid at the time of coating such as spraying in the next step, and the isocyanate in the coating liquid reacts with the hydroxyl group of the urethane resin in the ink layer to make marking with higher strength than before. It became so. The golf ball manufacturing method of the present invention uses the above-mentioned transfer foil for a golf ball to transfer a marking to the surface of the golf ball at a low temperature by a conventional method, and the marking is covered to form a two-component urethane resin on the surface of the golf ball. Since paint is applied and dried and cured, resistant marking can be easily applied to all golf balls.

[0018]

【Example】

<Example 1> A biaxially oriented polypropylene film having a thickness of 22 µm was printed with a pattern of the ink having the composition shown in Table 1 at a thickness of 1 µm to prepare a transfer foil.

Example 2 A transfer foil was prepared by printing an ink of the composition shown in (Table 2) in a pattern with a thickness of 1 micron on a biaxially oriented polypropylene film having a thickness of 22 microns.

<Example 3> A transfer foil was prepared by printing a pattern of ink of the composition shown in Table 3 on a 22-micron-thick biaxially oriented polypropylene film in a thickness of 1 micron.

<Comparative Example> A transfer foil was prepared by printing a pattern of ink of the composition shown in Table 4 on a 22-micron-thick biaxially oriented polypropylene film in a thickness of 1 micron. this is,
This is disclosed in JP-A-58-183285.

Using these transfer foils, a two-component reaction is carried out between a golf ball (ball 1) having a surface of a plasma-treated ionomer resin and a golf ball (ball 2) having a surface of a plasma-treated / sandblasted ionomer resin. 1 for a ball with a urethane resin surface (ball 3)
The silicon rubber having a thickness of 2 mm and heated at 30 ° C. was pressure-transferred for 1 second. Next, a transparent urethane paint (two-component reactive urethane coating liquid) was applied by spraying to obtain a dried and cured golf ball. At this time, the coating state of the coating liquid on the marking portion during spray electrostatic coating was observed.

The following tests were conducted on the marked golf balls. First, in order to confirm the transferability of the transfer foil, it was visually judged whether or not the printed marking, that is, the ink layer was completely transferred to the golf ball. Further, it was visually judged whether the marking transferred to the golf ball was transferred without distortion.

Finally, an impact test and an abrasion test were conducted to examine the physical properties of the marking portion. The impact test is
The impact of the golf ball on the iron plate at 45 m / sec was repeated 200 times, and the degree of damage of the marking was visually determined. As the abrasion resistance test, two types, a sand abrasion test and a sand water abrasion test, were performed. In the sand abrasion test, sand and balls were put in a ball mill (magnetic pot) and rotated for 2 hours, and then peeling of the marking portion was visually evaluated. In the sand water abrasion test, the same amount of sand and water was put into a ball mill (magnetic pot), a ball was put therein, the ball was rotated for 4 hours, and peeling of the marking portion was visually evaluated.

The results are shown in (Table 5).
-The transfer foil of Example 3 is good in transferability for the three types of balls, the transferred marking is also good without distortion, the repelling of electrostatic coating in the next step is not caused, and the coated ball is resistant to Both impact resistance and wear resistance were good.

[0026]

[Table 1]

[0027]

[Table 2]

[0028]

[Table 3]

[0029]

[Table 4]

[0030]

[Table 5]

[0031]

By using the transfer foil of the present invention,
Marks could be efficiently transferred to a golf ball at low temperature with a flat rubber pad, the coating liquid did not repel during the spray coating in the next step, and the marking layer reacted with the coating liquid to obtain high-strength marking. Further, the golf ball of the present invention has excellent marking resistance, and the manufacturing method using the transfer foil makes it possible to easily provide the marking with resistance on the golf ball surface. Also, good transfer was possible on the three types of surfaces of the transferred balls.

[0032]

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional explanatory view of a transfer foil showing an embodiment of the present invention.

[Explanation of symbols]

 1 ... Base film 2 ... Ink layer 3 ... Transfer foil

Claims (7)

[Claims] 1. A transfer foil used for marking a golf ball, comprising a single layer of an ink layer from a base film, wherein a urethane resin having a hydroxyl value of 0.2 or more and 15 or less is used in the transfer foil. A transfer foil for a golf ball, which reacts with an isocyanate in a coating liquid during spray coating of a liquid urethane resin. 2. The urethane resin 100 comprises the ink layer.
1 part by weight of vinyl chloride / vinyl acetate copolymer
The transfer foil according to claim 1, wherein the transfer foil contains 100 to 100 parts by weight. 3. The urethane resin 100 comprises the ink layer.
The transfer foil according to claim 1 or 2, which contains 1 to 30 parts by weight of silica with respect to parts by weight. 4. A hydroxyl value of 0.2 on the surface of a golf ball.
Marking is made with an ink containing 15 or less urethane resin as a main component, and a two-component urethane resin coating film is formed to cover this marking. Isocyanate groups in the two-component urethane resin are contained in the ink. A golf ball characterized by reacting with a urethane resin. 5. The ink contains 1 to 5 parts by weight of a vinyl chloride / vinyl acetate copolymer with respect to 100 parts by weight of the urethane resin.
The golf ball according to claim 4, wherein the golf ball contains 100 parts by weight. 6. The golf ball according to claim 4, wherein the ink contains 1 to 30 parts by weight of silica based on 100 parts by weight of the urethane resin. 7. A golf ball comprising the transfer foil according to claim 1, which is superposed on a golf ball, the marking is transferred to the surface of the golf ball, and then the marking layer is covered. 5. A two-component urethane resin paint is applied to the surface and then dried and cured.
7. A method for manufacturing a golf ball according to claim 6.