JPH0350719B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to, for example, production or presentation of dummies necessary for commercial designers to decide on designs for labels, display displays, packaging, signs, etc. Transfer sheets for design tests, which are used when attempting to obtain arbitrary patterns with metallic luster such as gold or silver when performing tachion, and
It relates to its manufacturing method.

[Conventional technology]

Conventionally, there is no technology for forming an arbitrary pattern with metallic luster on a test basis, separate from the means for forming the arbitrary pattern that becomes the actual product, and therefore, even when only one dummy is required, , a mold corresponding to the predetermined pattern or pattern that has been designed, that is, a foil stamping die (embossed version), is produced by machining or corrosion processing on a metal plate such as brass, and this foil stamping die is used for foil stamping. The die, heated to a high temperature, is strongly pressed onto the surface of a predetermined base material by mechanical operation, and the metal foil is punched out according to the shape and dimensions of the foil stamping die, and at the same time, the die is pressed onto the surface of the base material. The manufacturing method involved fusing and transferring, which required a complicated process that required a lot of effort, time, and a great deal of money. There was the inconvenience and inconvenience of having to completely rely on a contractor.

In other words, in the past, even if you wanted a transfer sheet with a desired pattern of metallic luster, it was generally very expensive regardless of its purpose or use, and especially when the required amount was relatively small. The reality was that people were very hesitant to order it for various reasons.

Therefore, a method using a transfer sheet was developed as an alternative technology to the so-called hot stamp.

For example, in JP-A No. 50-125816, a release layer is applied to a base film as necessary, a pattern is printed in multiple colors using transparent synthetic resin paint, and a metal vapor deposition layer is applied to the entire printed surface. After forming a protective layer by vacuum vapor deposition and printing a transparent synthetic resin paint on the necessary parts on the vapor-deposited surface, the metal in the areas where the protective layer is not printed is dissolved with a chemical solution such as an acid or alkaline liquid, and then a thermoplastic coating is applied on top of the protective layer. A technique has been proposed for manufacturing a transfer film with a multicolored metallic pattern by applying an adhesive to the entire surface.

This technique has various drawbacks of conventional hot stamps in that it uses a base film and introduces a transfer method, namely, it requires an expensive mold.

This product has made great progress in solving the following problems: the need for hot stamps according to the number of colors, the difficulty in matching complex patterns, and the inability to create blurred and intermediate patterns.

However, when looking at the needs in the industrial application field targeted by the present invention, ie, prototyping for designers, etc., such improved technology is still not a technology that fully satisfies the following points. It is.

According to the above-mentioned improved technology, the pattern to be transferred is transferred to the base film (a release layer may be provided).
Because it is pre-printed with transparent synthetic resin paint on top,
Naturally, a printing plate (gravure roll, etc.) is required, and its production cost must be considered.

In the above technology, the transfer pattern is printed in advance, so the expensive printing plate as described above is not required even though the design is determined through repeated trial and error in the originally small designer office which is the target of the present invention. It is not possible to make a large number of them, and apart from mass production of the same pattern, it is not possible for designers to immediately implement any pattern they create as a prototype.

Since printing requires printing machinery and equipment, it is not suitable as a technique for producing prototypes for designers as referred to in the present invention.

In addition to printing the paint on the base film mentioned above, it is also necessary to print the paint on the necessary parts (using a gravure roll, etc.) on the metal vapor deposited layer. Since it is used to determine the desired pattern during etching (protective coating for etching), the printing must match the initial paint printing on the base film. Therefore, there are problems in that it is technically difficult to make the two-time printing correspond to a predetermined relationship, and that the number of work steps increases, resulting in high costs. Such high-precision printing cannot be easily achieved in a small-scale design room.

In this way, it was not possible to easily transfer arbitrary patterns (designs) created by designers in their offices to various prototype products with metallic luster.

This is a technical limitation of using printing means, similar to the technical limitation of the hot stamp described above.

What emerged after this technical development was a technique in which a pattern was imprinted using a printing means, a desired pattern was similarly printed using a photosensitive resin, and a metal vapor deposited layer was formed thereon.

Such a technique is disclosed in, for example, Japanese Patent Laid-Open No. 56-37187.

However, with this technique, an arbitrary design must be printed on the sheet in advance, and in order to determine the design to obtain a metallic luster, photosensitive resin must be printed as an unnecessary part (removed first) corresponding to the design. In all respects, there is no difference from the prior art described above.

As for the use of photosensitive resin, the unnecessary portion corresponding to the pattern is softened by light irradiation, and is dissolved and removed, thereby removing the metal vapor deposited layer thereon. With this method, since the metal vapor deposited layer is removed by dissolving the underlying photosensitive resin, the necessary metal vapor deposited layer, ie, the edges of the pattern, are less likely to become sharp.

[Problem to be solved by the invention]

In view of the current situation, the present inventor has conducted extensive experiments and research over many years in order to solve and eliminate the above-mentioned inconveniences and inconveniences and to meet the strong demands of the industry and related parties. .

Therefore, in view of the technical limitations of using the above-mentioned conventional printing methods, how can we easily transfer arbitrary patterns (designs) created by designers in their offices onto various prototype products with a metallic luster? We have conducted research and development on how to do this, and have made several proposals for solutions.
I haven't been able to find a satisfactory solution yet.

First of all, how can we fix any transferred design without using printing technology? Also, how can we fix the transferred design on the metal vapor deposited layer (foil film) to give it a metallic luster? The problem was how to form sharp edges of designs and patterns on the metal vapor deposited layer (foil film).

Therefore, as a way to solve these problems, we introduced the basic technology of creating arbitrary patterns using negative film, which is easy to produce, and a method of determining patterns using photosensitizers, allowing designers to create arbitrary patterns at their offices. The aim was to perfect a technology that would allow the colored patterns (special designs for negative film) to be easily transferred to various prototypes with a metallic luster.

The basic methods devised for this purpose are (a) using a base film, (b) providing a release layer for transfer on this film, and (c) placing a metal film on top of this release layer. A colorant layer that produces a glossy color and an aluminum vapor deposition layer are integrally arranged; (d) A photosensitive layer is provided on top of this metal color layer and a desired image (design) is formed using a negative film. (e) After the image is fixed on the photosensitive layer, the non-photosensitive layer and metal color layer are dissolved and removed by etching; (f) Adhesive for transferring the completed image. The process consists of six steps: providing a layer;

Conventionally, water-based and oil-based photosensitizers are known as photosensitizers, but water-based photosensitizers were selected because they use simple washing with water to confirm the image after exposure.

However, the aqueous photosensitizer has a problem in that it is difficult to coat the aluminum vapor deposited layer as it is.

In addition, if you use a method in which the etched image is completed and then coated with transfer adhesive as a final step, the transferred material (package prototype, etc.) will be coated with a transfer adhesive.
Adhesive adheres to areas other than the desired transferred design,
There was a problem with poor finish (adhesion of dirt and dust).

[Means to solve the problem]

The present invention has been made as a result of further experiments and research in view of the above points, and its purpose is to eliminate the disadvantages and drawbacks in implementation as described above, and to make it easier and more efficient. specifically, and
The object of the present invention is to make it possible to manufacture a transfer sheet having the above-mentioned excellent functions in an economically advantageous manner.

[Means to solve the problem]

(i) The technical means of the first invention taken to solve the above problems is to provide a release film layer 2 on one side of the base film 1, and a transparent colorant layer 3 on the release film layer 2. , an aluminum vapor deposited layer 4 is provided on this transparent colorant layer 3 , an aqueous photosensitive agent layer 7 is provided on this aluminum vapor deposited layer 4 , and a negative film 8 is provided on this aqueous photosensitive agent layer 7 . The transfer sheet is a transfer sheet which is exposed to light in close contact with the aluminum, washed with water, and etched with an alkaline solvent, and between the aluminum vapor deposition layer 4 and the aqueous photosensitive agent layer 7, the aluminum vapor deposition layer 4 is protected by oil-based ink. The protective film layer 5 is formed by interposing an adhesive layer 6 made of a pressure-sensitive oil-based glue on top of the protective film layer 5.

(ii) The technical means of the second invention taken to solve the above-mentioned problems are as follows: () forming a release film layer 2 on one side of the transparent base film 1; forming a transparent colorant layer 3 on the entire top surface; () forming an aluminum vapor deposition layer 4 on the entire top surface of the transparent colorant layer 3; and () forming a protective film layer of oil-based ink on the entire top surface of the aluminum vapor deposition layer 4. () an adhesive layer 6 is formed on the entire upper surface of the oil-based protective film layer 5 with a pressure-sensitive oil-based glue; () furthermore, a water-based photosensitive layer 7 is formed on the oil-based adhesive layer 6; () An original film 8 having a desired pattern in a negative form is closely placed on the photosensitive agent layer 7, and a light beam is irradiated from above to perform printing, and then the original film 8 is removed. () Next, the base sheet 9 obtained by the steps () to () above is washed with water, leaving the photocured portions (7 ₁ ) of the aqueous photosensitive agent layer 7. Other unexposed areas (7 ₂ )
() Further, by washing the base sheet 9 with an oil-based solvent, the photocured portion (7 ₁ ) of the photosensitive agent layer 7 of the oil-based adhesive layer 6 and the oil-based protective film layer 5 is removed. . . . Leaving the portion located below, the other portions are dissolved and removed. () Finally, the photosensitive hardened portions (7 ₁ ) of the photosensitive agent layer 7 are removed, and the base sheet 9 is suitably removed. The aluminum vapor deposited layer 4 and the transparent colorant layer 3 are etched using an alkaline solvent.
A pressure-sensitive transfer sheet characterized by the procedure of: leaving the portion located below the remaining portions of the oil-based adhesive layer 6 and the oil-based protective film layer 5 and dissolving and removing the other portions. This is a manufacturing method.

[Effect]

As a result of taking the technical measures (i) and (ii) above, the following effects can be obtained.

That is, in the first invention, although a transfer pattern (image) can be arbitrarily created using a negative film that is basically easy to produce,
By introducing a so-called oil-washing process using an oil-based solvent in addition to water washing, oil-based ink is provided on the aluminum vapor-deposited layer 4 to protect the aluminum vapor-deposited layer 4 and improve compatibility with the aluminum vapor-deposited layer 4. Compatibility with the adhesive layer 6 is improved by the pressure-sensitive oil-based glue on the opposite side, and furthermore, this adhesive layer 6
It improves compatibility with the water-based photosensitive agent layer 7 located above, and at the same time, when the cured portion of the water-based photosensitive agent layer 7 is removed in the final etching process, the oil-based adhesive is automatically removed. Since the layer 6 can be exposed, there is no need to apply an adhesive to the entire surface of the final transferred image (pattern) in a separate process.

In addition, in the second invention, by using the above-mentioned manufacturing method, the aqueous photosensitive agent is applied onto the aluminum vapor deposited layer 4 via the oil-based ink protective film layer 5 and the oil-based adhesive layer 6. It is possible to fix the layer 7 smoothly, to form an image (pattern) without any slippage between these three parts, and without blurring of the transferred image (pattern). , an oil-based transfer adhesive layer 6 is under the cured water-based photosensitive layer 7,
While it is not affected by oil washing, in the final etching, the aluminum vapor deposited layer 4 is removed (unnecessary parts) and the adhesive layer 6 is automatically exposed using an alkaline solvent for transfer. It is possible to provide.

When washing with water or oil, the desired image (pattern) portion is fixed downward by hardening of the water-based photosensitive layer 7, so that the edges of the oil-based adhesive layer 6 are sharply formed. It can be done.

In the etching of the aluminum vapor deposited layer 4 and the transparent colorant layer 3, the desired image (pattern) partial edges are formed by the edges of the oil-based adhesive layer 6 and the protective film layer 5 made of oil-based ink below the edges. Since the process is carried out in a fixed state, stable edges can be formed in a similar manner.

〔Example〕

Embodiments of the present invention will be described below based on the drawings (FIG. 2).

() First, as shown in Figure 2 A, a transparent (including translucent ) on one side of the base film 1, which is a film made of A liquid is applied to form a release film layer 2, and () a semi-aqueous transparent film of the desired color is required if a metallic luster surface having a color other than silver is desired, or a colorless semi-aqueous transparent surface is desired if a silver color is desired. Colorant layer 3
() forming an aluminum vapor deposited layer 4 on the entire surface of the transparent colorant layer 3 by vacuum vapor depositing aluminum metal according to a conventional method;
The aluminum vapor deposited layer 4 and the transparent colorant layer 3 constitute a metallic luster layer _A1 .

() Forming a protective film layer 5 using oil-based ink on the aluminum vapor deposited layer 4; () Forming an adhesive layer 6 using pressure-sensitive oil-based glue on the oil-based protective film layer 5; () Further. , a water-based photosensitive agent layer 7 is formed on the oil-based adhesive layer 6 (it is appropriate to use a product called Chromatech as this water-based photosensitive agent, which is manufactured by Tokyo Metropolitan Government). It is easily available along with the necessary equipment called the Chromatek Starting Kit through Letraset Japan Co., Ltd., which has its head office in Mita, Minato-ku, and the coating rod and workbench (with mat) included in this kit. When applying the photosensitive agent to the surface of the oil-based adhesive layer 6 using a method, it is generally desirable to spray a small amount of a specified pinhole preventive agent over the entire surface in advance), () After waiting for the drying of the photosensitive agent layer 7, a separately prepared original film 8 with a negative pattern of a desired pattern is closely placed thereon, and is printed by irradiating it with ultraviolet light from above using, for example, an ultraviolet lamp 10. After performing (exposure), the original film 8 is removed, () Next, the base sheet 9 obtained by the steps () to () above is washed with water, for example, on a washing stand. As shown _in FIG.
The unexposed portion (7 ₂ ) of the oil-based adhesive layer 6 is removed by dissolving and removing the unexposed portion (7 2 ) while leaving behind the unexposed portion (7 ₂ ) of the oil-based adhesive layer 6.
(2) Further, as shown in FIG. Leaving a portion located below the photosensitive hardened portion (7 ₁ ) of the photosensitive agent layer 7, the other exposed portions are dissolved and removed, and the exposed portion is removed below the unexposed portion (7 ₂ ) of the aluminum vapor deposited layer 4. () Finally, as shown in FIG. 2D, the photosensitive hardened portion (7 ₁ ) of the photosensitive agent layer 7...
is removed by scraping with a sponge bar impregnated with a treatment liquid such as Chromatec D3' (trade name), and the aluminum vapor deposited layer 4 and the semi-aqueous transparent colorant layer 3 are removed.
Leaving the parts located below the remaining parts of the oil-based adhesive layer 6 and the oil-based protective film layer 5, the other exposed parts are treated with a suitable solvent such as a caustic soda aqueous solution having a concentration of about 5 to 30%. Through the steps of dissolving and removing by etching using a transparent base film 1 and a mold release formed on one side of the base film 1, as shown by the solid line in FIG. A film layer 2, a semi-aqueous transparent colorant layer 3 forming a desired pattern formed on the release film layer 2, and the transparent colorant layer 3.
An aluminum vapor deposition layer 4 formed on the aluminum vapor deposition layer 4, a protective film layer 5 formed on the aluminum vapor deposition layer 4, and a pressure-sensitive adhesive layer formed on the protective film layer 5. A transfer sheet S, consisting of 6... is manufactured. Note that the transparent colorant layer 3
Since it is semi-aqueous, the caustic soda solution used as the etching solution dissolves the exposed portion of the aluminum vapor deposited layer 4 as well as the portion immediately below it, and moreover precisely along the boundaries of the predetermined pattern/design. Since it is removed, it is possible to obtain a desired transfer sheet S in which the edges of the pattern/design are extremely clearly formed.

When using the transfer sheet S manufactured as described above, the uppermost adhesive layer 6
Desired object to which sides are to be transferred (not shown)
After contacting the surface at a predetermined position, the base film 1 is rubbed from the other side, that is, the side opposite to the release film layer 2, with a roller or iron pen having an appropriate hardness, and a pressure-sensitive film is applied. After firmly adhering the surface of the adhesive layer 6 to the transfer object, when the base film 1 is peeled off, the transparent colorant layer 3 is finally transferred to the surface of the transfer object A. In this state, a pattern of a desired color with a beautiful metallic luster can be easily transferred onto the surface of a desired transfer object.

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

〔Effect of the invention〕

In the first invention, although a transfer pattern (image) can be created arbitrarily using a negative film that is basically easy to produce, the aqueous photosensitive agent layer has a good adhesion to the aluminum vapor deposited layer, and the work is easy to perform. In addition, the etching process allows the oil-based adhesive layer to be exposed automatically when the hardened portion of the water-based photosensitive layer is removed, making it possible to automatically expose the oil-based adhesive layer, which is not possible with conventional final transfer images (patterns) on the entire surface. Unnecessary transfer of the adhesive to the transferred material due to the application of the adhesive can be prevented, and an effect has been achieved in which any pattern with a beautiful finished metallic luster can be transferred.

In the second invention, the aluminum vapor deposition layer, the oil-based ink protective film layer, and the oil-based adhesive layer can be fixed to the water-based photosensitive agent layer smoothly, and there is no slippage between these three layers, and the transferred image (pattern) can be easily fixed. Images (patterns) can be formed without blurring, and the oil-based transfer adhesive layer is under the hardened water-based photosensitive agent layer during the first water wash and the subsequent oil wash. While it is not affected by oil washing, in the final etching, the aluminum vapor deposited layer is removed (unnecessary parts) and at the same time, the adhesive layer is automatically exposed using an alkaline solvent and used for transfer. This greatly simplifies the work process compared to conventional methods.

When washing with water or oil, the desired image (pattern) portion is fixed downward by the hardening of the aqueous photosensitive agent layer, which has the advantage that the edges of the oil-based adhesive layer can be formed sharply. There is.

The etching of the aluminum vapor deposited layer and the transparent colorant layer is also carried out in a state in which the desired image (pattern) partial edges are determined by the edges of the oil-based adhesive layer and the protective film layer made of oil-based ink underneath. Similarly, stable edges can be formed sharply, and the metallic luster can be expressed very well.

[Brief explanation of drawings]

FIGS. 1A, 1B, 1C, and 1D are flowcharts showing embodiments of a pressure-sensitive transfer sheet and a method for manufacturing the same according to the present invention. 1...Base film, 2...Release film layer, 3
...Transparent colorant layer, 4...Aluminum vapor deposition layer,
5...Protective film layer, 6...Adhesive layer, 7...Photosensitive agent layer, 7 ₁ ...Photosensitive cured area, 7 ₂ ...Unexposed area, 8...Original film, 9...Base sheet, A
... Transferred object, A ₁ ... Metallic gloss layer, S ... Transfer sheet.

Claims (1)

[Claims] 1. A release film layer 2 is provided on one side of the base film 1, a transparent colorant layer 3 is provided on this release film layer 2, and an aluminum vapor-deposited layer is provided on this transparent colorant layer 3. 4 is provided, and an aqueous photosensitive agent layer 7 is provided on this aluminum vapor deposited layer 4, so that this aqueous photosensitive agent layer 7
The transfer sheet is a transfer sheet in which a negative film 8 is brought into close contact with a substrate and exposed to light, washed with water, and etched with an alkaline solvent. A transfer sheet comprising a protective film layer 5 made of oil-based ink, and an adhesive layer 6 made of pressure-sensitive oil-based glue interposed on the protective film layer 5. 2. A pressure-sensitive transfer sheet manufacturing method comprising at least the following steps () to (). () forming a release film layer 2 on one side of the transparent base film 1; () forming a transparent colorant layer 3 on the entire upper surface of the release film layer 2; an aluminum vapor deposited layer 4 is formed on the entire upper surface; () a protective film layer 5 is formed with oil-based ink on the entire upper surface of the aluminum vapor deposited layer 4; () a pressure-sensitive oil-based glue is formed on the entire upper surface of the oil-based protective film layer 5. () Further, a water-based photosensitive agent layer 7 is formed on the oil-based adhesive layer 6, and () a desired pattern is formed on the water-based photosensitive agent layer 7 in a negative form. The original film 8 is closely mounted, and the original film 8 is printed by irradiating a light beam from above, and then the original film 8 is removed. By washing the sheet 9 with water, the photocured portion of the aqueous photosensitive agent layer 7 is left behind and other unexposed portions are dissolved and removed; () Furthermore, by washing the base sheet 9 with an oil-based solvent, Then, the remaining portions of the oil-based adhesive layer 6 and the oil-based protective film layer 5 located below the photosensitive hardened portion of the photosensitive agent layer 7 are dissolved and removed. While removing the photocured portion of the agent layer 7, the base sheet 9
By etching using a suitable alkaline solvent, the aluminum vapor deposited layer 4 and the transparent colorant layer 3 are etched below the remaining portions of the oil adhesive layer 6 and the oil-based protective film layer 5. Leave the part where it is located and dissolve and remove the other part.