JPH0132792B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a transfer method, and particularly to a transfer method to a golf ball.

<Prior art> Conventional methods for painting golf balls include direct printing using tacho printing, or printing foil with a solid ink layer formed on the entire surface of the foil, which is then heated from the back side. As disclosed in Japanese Patent Application Laid-open No. 53-63137, a transfer foil with a transfer ink layer of an arbitrary pattern formed on an arbitrary film is used. A thermal transfer printing method for printing is known.

However, when applying multicolor patterns to golf balls, the tacho printing method requires curing the ink for each color, which is extremely inefficient, and the method using solid printing foil requires special stamping equipment for multicolors. Moreover, since most of the ink printed on the solid printing foil is discarded without being used, it has disadvantages such as high cost. Furthermore, Tokukai Akira
The transfer foil disclosed in Japanese Patent No. 53-63137 also has the following drawbacks.

That is, when screen printing is used to form arbitrary patterns on a film, the ink dries slowly, which tends to cause problems such as blocking, and the printing method itself is inefficient, making transfer foil expensive. Furthermore, when the gravure printing method is used, the outline of the ink layer is not sharp and a so-called "swimming" phenomenon is observed, making it unsatisfactory as a transfer foil.

Furthermore, many of these conventional transfer foils require release varnish to be applied on the film to improve transferability.
After printing an arbitrary pattern on this, adhesive varnish is applied or either release varnish or adhesive varnish is used. It has the disadvantages of inhibiting adhesion with layers, causing burrs on the release varnish and adhesive varnish, and yellowing of the adhesive varnish, making it extremely difficult to select materials and increasing the number of man-hours and materials. Therefore, it has the disadvantage of high cost. Moreover, when such a transfer foil is used for transfer, the transfer performance is extremely poor when the paint applied to the surface of the golf ball, which is the object to be transferred, has progressed to hardening. It is difficult to select the material and shape of the silicone pad for applying pressure from the back side, and further disadvantages include distortion of the outer skin of the golf ball when pressure is applied at high temperatures for a long time to ensure sufficient fixation of the ink layer to the golf ball. have.

As a result of intensive research to improve the drawbacks of the conventional method described above, the inventors of the present invention have developed a method that can transfer elaborate designs in multiple colors in a single hot stamping process, and has given due consideration to the physical properties so that it can withstand harsh usage conditions. He succeeded in developing a transfer foil and filed an application as JP-A-55-145507. That is, this invention forms an ink layer on a polypropylene film without using a release varnish or an adhesive, and in particular, an ink composition that has release properties, transferability, and sufficient necessary physical properties. The main resin is nitrified cotton or alkyd resin, and the colorant is a pigment or dye, and the additives are polyethylene powder, a plasticizer, and a surfactant dissolved or dispersed in an organic solvent. This transfer foil for golf balls is made by forming a desired ink layer on a polypropylene film using ink.

<Problems to be Solved by the Invention> Although this transfer foil overcomes the drawbacks of the conventional method described above, it has the following problems in terms of productivity. In other words, during transfer, the high temperature condition of 180°C causes the film to shrink and wrinkle when transferring over a large area, causing deformation of the ink image, and when applying a clear top coat to the golf ball surface after transfer. The ink layer transferred to the top coat solvent is eroded and runs, resulting in a loss of sharpness of the ink image.

<Means for Solving the Problems> The present invention solves these drawbacks of the conventional method and Japanese Patent Application Laid-open No. 145507/1983. That is, the present invention uses a resin selected from polyamide resin, hard resin, acrylic resin, polyester resin, and urethane resin and nitrified cotton as the main resin, a pigment or dye as a coloring agent, and polyethylene powder, extender pigment, A desired ink layer is formed on a polypropylene film using an ink made by dissolving or dispersing a plasticizer and a surfactant in an organic solvent. The feature is that the transfer foil is placed on the golf ball and the transfer is performed at a temperature of 160°C or less.

In addition, as an alternative method of the present invention, instead of using a resin selected from the aforementioned polyamide resin, hard resin, acrylic resin, polyester resin, and urethane resin and nitrified cotton as the main resin, a vinyl resin that does not contain nitrified cotton or A transfer foil made of acrylic resin as the main resin can also be used in a similar manner.

<Example> The film that is the carrier for the ink layer used in the present invention not only supports the ink layer, but also
Characteristics that allow the ink layer to be completely transferred even to a unique site such as the dimple portion of a golf ball, and characteristics that allow the ink layer formed by the special ink composition described below to be completely released during transfer. must be equipped.

According to the results of tests conducted on polyethylene film, polypropylene film, polyester film, polyamide film, vinyl chloride film, and cellophane film as films that meet the above conditions, polypropylene film showed the best results. This result is very interesting in view of the fact that polyester films and cellophane films are actually commonly used in this field.

The ink used in the present invention contains a resin selected from polyamide resin, hard resin, acrylic resin, polyester resin, and urethane resin and nitrified cotton as the main resin component, or contains vinyl resin or acrylic resin as the main resin component, and is heated. When the ink layer is transferred by applying pressure, these main resin components mentioned above are softened and tackiness is generated, which has the effect of adhering to the surface of the golf ball, which is the object to be transferred.

The pigment used as a coloring agent, i.e., a coloring agent, is required to have light resistance because the golf ball, which is the object to be transferred, is used outdoors, so a high grade pigment is used. Alternatively, dyes can also be used.

The polyethylene powder as an additive was added to prevent blocking of the ink layer and improve the abrasion resistance, and the plasticizer was used because the main resin is relatively hard and was transferred to the golf ball, which is the object to be transferred. Since the ink layer tends to crack due to strong impact when hitting a ball, it is added to prevent cracks.

Furthermore, surfactants are added as dispersants to uniformly disperse insoluble substances such as pigments and polyethylene powders in organic solvents, and extender pigments are
It is added to improve the ink cutting from the plate when forming an ink image on polypropylene film.

Because the golf ball transfer foil according to the present invention has the above-described structure, it not only has superior transfer performance to a transferred object including dimpled portions, but also has superior transfer performance to a transferred object, including dimpled portions, compared to conventional transfer foils. Since the ink layer has excellent physical properties such as light resistance, abrasion resistance, and crack resistance, it is truly suitable as a transfer foil for golf balls that are exposed to strong light exposure and impact.

<Effects> However, compared to the transfer foil disclosed in JP-A-55-145507, since the transfer is performed at a low temperature of 160°C or less, wrinkles do not occur on the film during transfer, and the surface of the golf ball does not change after transfer. The practical effects of the present invention are great, such as the fact that there is no ink blade even when a top coat is applied to the ink, allowing for more precise transfer.

The present invention will be explained in more detail below with reference to Examples.

Example 1 [Creation of transfer foil] A transfer foil was created by printing a pattern on a 20μ biaxially stretched polypropylene film using the ink compositions (1) to (8) below using the gravure printing method. did.

(1) Ink (1) 10 parts by weight of nitrified cotton, 4.5 parts by weight of polyamide resin,
10 parts by weight of carbon black, 3 parts by weight of fine silica powder, 5 parts by weight of plasticizer (phthalic acid type), trace amount of less than 1 part by weight of polyethylene powder, trace amount of less than 1 part by weight of surfactant (nonionic type), mixed solvent ( Toluene/isopropyl alcohol/ethyl acetate = 6/3/1) 67 parts by weight (2) Ink (2) 7 parts by weight of nitrified cotton, 3 parts by weight of urethane resin, 10 parts by weight of carbon black, 3 parts by weight of plastic part (phthalic acid type) parts by weight, a trace amount of polyethylene powder (less than 1 part by weight), a trace amount of less than 1 part by weight of a surfactant (nonionic), a mixed solvent (isopropyl alcohol/toluene/methyl ethyl ketone = 3/4/
3) 77 parts by weight (3) Ink (3) 10 parts by weight of nitrified cotton, 5 parts by weight of ester gum, 10 parts by weight of carbon black, 3 parts by weight of plasticizer (phthalic acid), polyethylene powder, surfactant (nonionic) ) 1 part by weight or less of mixed solvent (ethyl acetate/toluene = 50/50) 72 parts by weight (4) Ink (4) 10 parts by weight of nitrified cotton, 3 parts by weight of polyester resin, polyazo pigment (CINo pigment Red)
144) 12 parts by weight, a trace amount of 1 part by weight or less of polyethylene powder, 3 parts by weight of plasticizer (phthalic acid type), a trace amount of 1 part by weight or less of surfactant (nonionic type),
Mixed solvent (isopropyl alcohol/toluene/metal ethyl ketone = 3/4/3) 72 parts by weight (5) Ink (5) 15 parts by weight of salt-vinyl acetate copolymer, 9 parts by weight of polyazo pigment (same as above), 1 part by weight of polyethylene powder Parts by weight, 5 parts by weight of precipitated barium sulfate, trace amounts of less than 1 part by weight of both plasticizer (same as above) and surfactant (same as above), 70 parts by weight of mixed solvent (methyl ethyl ketone/toluene = 50/50) (6) Ink ( 6) 10 parts by weight of sulfurized cotton, 5 parts by weight of ester gum, 7 parts by weight of dye (CINo Disperse Blue 19), 3 parts by weight of plasticizer (same as above), trace amounts of less than 1 part by weight of polyethylene powder and surfactant (same as above). , 75 parts by weight of mixed solvent (ethyl acetate/toluene = 50/50) (7) Ink (7) 10 parts by weight of nitrified cotton, 3 parts by weight of acrylic resin, 10 parts by weight of carbon black (pigment), 1 part by weight or less of polyethylene powder 3 parts by weight of plasticizer (phthalic acid type), 1 part by weight or less of surfactant (nonionic type), mixed solvent (toluene/isopropyl alcohol/ethyl acetate = 6/3/1)
74 parts by weight (8) Ink (8) 10 parts by weight of acrylic resin, 11 parts by weight of polyazo pigment (same as above), 3 parts by weight of plasticizer (same as above), 1 part by weight or less of polyethylene powder, and surfactant (same as above). Trace amount, 74 parts by weight of mixed solvent (ethyl acetate/toluene = 50/50) Example 2 A golf ball with a shell made mainly of balata was coated with white urethane paint (two-component reaction heat-dried urethane paint for golf balls). After drying and curing at 36℃ for 20 hours, transfer foil made using ink (1) with silicone rubber (3mm thick, cylindrical concave surface radius of curvature 40mm used) heated to 160℃ was added. Transfer was performed by pressing for 1 second. Next, a transparent urethane paint (a two-component heat-dried golf ball urethane paint) was applied and dried and cured at 36°C for 48 hours to obtain a painted golf ball.

The following tests were conducted on the decorated golf balls.

First, in order to confirm the transferability of the transfer foil, it was determined by visual observation whether the printed pattern, ie, the ink layer, was completely transferred to the golf ball. Furthermore, it was determined by visual observation whether the pattern transferred to the golf ball was beautifully transferred. Finally, to investigate the physical properties of the design, we conducted impact tests and abrasion tests. The impact test was conducted by colliding a golf ball against a steel plate at a speed of 45 m/sec 50 times, and the degree of damage such as peeling of the pattern was determined by visual observation, and the impact resistance was determined. . In addition, in the abrasion test, the surface of the golf ball after the impact test is strongly sprayed with water and sand for 5 minutes, and the peeling of the pattern and the degree of damage after wear are determined by visual observation. and made it wear resistant.

As a result, this product has good transferability, good appearance of the transferred picture, and impact resistance.
Both wear resistance was good.

Example 3 A test was carried out in the same manner as in Example 2, except that a golf ball whose outer shell was mainly made of ionomer resin was used. The results were similar to Example 2.

Example 4 Example 3 was carried out in the same manner as in Example 3, except that a transfer foil prepared using ink (2) was used, and the results were also the same.

Example 5 The same procedure as in Example 2 was carried out except that transfer foils prepared using inks (3) and (4) were used, and the results were also the same.

Example 6 Example 3 was carried out in the same manner as in Example 3, except that a transfer foil prepared using ink (5) was used, and the results were also the same.

Example 7 Example 2 was carried out in the same manner as in Example 2, except that a transfer foil prepared using ink (6) was used, and the results were also the same.

Example 8 The same procedure as in Example 3 was carried out except that a transfer foil prepared using ink (7) was used, and the results were also the same.

Example 9 The same procedure as in Example 2 was carried out except that transfer foils prepared using inks (7) and (8) were used, and the results were also the same.

Claims (1)

[Claims] 1 The main resin is a resin selected from polyamide resin, hard resin, acrylic resin, polyester resin, and urethane resin and nitrified cotton, a pigment or dye is used as a coloring agent, and polyethylene powder is used as an additive. A transfer foil made by forming a desired ink layer on a polypropylene film using ink made by dissolving or dispersing extender pigments, plasticizers, and surfactants in an organic solvent is placed on a golf ball and transferred at a temperature of 160°C or less. A method for transferring onto a golf ball, which is characterized by: 2. A desired image can be printed on a polypropylene film using an ink made of vinyl resin as the main resin, pigments or dyes as colorants, and polyethylene powder, extender pigments, plasticizers, and surfactants as additives dissolved or dispersed in an organic solvent. A method for transferring to a golf ball, which comprises placing a transfer foil formed with an ink layer on a golf ball and transferring at a temperature of 160°C or less. 3 A desired ink is applied onto a polypropylene film using an ink made of an acrylic resin as the main resin, a pigment or dye as a coloring agent, and polyethylene powder, an extender pigment, a plasticizer, and a surfactant as additives dissolved or dispersed in an organic solvent. A method for transferring to a golf ball, which comprises placing a layered transfer foil on a golf ball and transferring at a temperature of 160°C or less.