JPS61254385A - Production of partially vapor-deposited transfer foil for back side transfer - Google Patents

Abstract

PURPOSE:To enable expression with high degree of freedom wherein a print expression free of metallic feeling or a colored transparent expression is synchronized and matched to a print expression accompanied by metallic feeling, by providing a vapor-deposited metallic part and a pattern by independent steps. CONSTITUTION:After providing a releasable layer 2 on a base film 1 as required, a strippable layer 3 is provided, and then a water-soluble resin layer 4 is partially provided. A vapor-deposited metallic layer is provided on the entire surface of the resultant material, followed by washing with water to dissolve away the resin, thereby obtaining a vapor-deposited metallic part 5 left in a pattern. Then, a pattern layer 6 in an arbitrary shape and a transparent adhesive layer 7 are sequentially provided to obtain a partially vapor-deposited transfer foil for back side transfer. The pattern layer 6 can be synchronized and matched to the vapor-deposited part and other parts by an additional printing registration device. The step of providing the vapor-deposited part and the step of providing the pattern are independent from each other, so that it is made possible to obtain a print expression with a high degree of freedom.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a partially vapor-deposited transfer foil used for surface decoration of transparent synthetic resin products, and in particular to a partially vapor-deposited transfer foil for use in transferring the back surface of a transparent substrate in which a metal-deposited portion and a pattern are identically matched. The present invention relates to a method for manufacturing partially vapor-deposited foil.

<Prior art> Several effective manufacturing methods have been proposed for conventional partially vapor-deposited foils for surface transfer. As for transcription, a perfect product in terms of expressiveness has not yet been obtained.

The most common method is to use a raw material with a release layer and an aluminum vapor-deposited layer on the entire surface in advance, print any pattern on it with alkali-resistant ink, and then wash it with alkaline to remove any inks other than the ink. By dissolving and removing the aluminum vapor deposited portion 1, and then applying a transparent adhesive, it is possible to obtain a backside transfer foil in which the pattern and the vapor deposited portion are completely synchronized. However, a drawback of this method is that a vapor deposited layer always remains under the pattern ink area, making it impossible to express without a metallic effect or transparently colored.

<Problems to be Solved by the Invention> The present invention solves the above problems (i.e., synchronizes the printing expression without metallic feel or colored transparent expression with the printing expression with metallic feeling in partially vapor-deposited transfer foil for back side transfer). This provides a method for manufacturing backside transfer foils in which the foils are mixed while being aligned.

Means for Solving the Problems> Means for solving the above problems will be described in detail below with reference to the drawings.

That is, as shown in FIG. 1(a), a release layer (2) is provided on the base film (1) as necessary, and then a release layer (3) is provided on the base film (1).
) is provided, and then a water-soluble resin layer (4) is partially provided.

Metals are vapor-deposited on the entire surface, and then washed with water to dissolve and remove the water-soluble resin, resulting in a metal-deposited portion (5) remaining in a pattern as shown in FIG. 1(b). Next, as shown in FIG. 1e+, a pattern layer (6) of an arbitrary shape and a transparent adhesive layer (7) are formed on top of each other to obtain the desired partially vapor-deposited transfer foil for back side transfer. The pattern layer (6) can be co-registered to the deposited and non-deposited parts by a residual registration device.

Alternatively, as shown in FIG. 2(a), after providing a release layer (9) on the base film (8), a water-soluble resin 1i0α is provided on the entire surface, and a water-soluble resin such as isocyanate is applied on top of this. Any pattern (1
1), then apply metal vapor deposition to the entire surface, and then wash with water to remove the metal vapor deposited layer in areas other than the cured ink. As shown in Figure 2 (b), the metal vapor deposition remained in a pattern. A portion (1z) is obtained.Next, as shown in FIG. be.

The pattern layer (131) can be co-adjusted to the deposited and non-deposited parts by a legacy registration device.

In addition, the release layer and/or release layer may be optionally used.
In some cases, a pattern layer with an arbitrary shape is formed by printing, but in this case, the result is that the printed pattern layer is placed in front of the metal vapor deposited layer, and the hue of the m portion of this printed pattern is the same as that of the metal behind it. Combined with the light reflected from the vapor deposited layer, various metallic effects such as gold, silver, copper, and bronze are expressed.

It is desirable that each layer located between at least the base film and the metal vapor deposition layer, such as a release layer, a peeling layer, a water-soluble resin layer, and a pattern layer containing a hardening agent, be transparent or semitransparent.

According to the method of the present invention, after partially providing a water-soluble portion by any means, a metal vapor deposited layer is formed on the entire surface, and then the metal vapor deposited layer in the water soluble portion is washed with water. After removal, any pattern is printed while adjusting the pattern as needed, so the process of applying the metal vapor deposition area and the pattern are independent, allowing for a high degree of freedom in printing expression. Furthermore, with regard to the same alignment of the partially deposited layer and the pattern, printing accuracy sufficient for practical use can be obtained as the registration device becomes more precise.

In addition, as for the method of partially providing a water-soluble part, in addition to the method of partially providing a water-soluble resin, after providing a curable water-soluble resin layer on the entire surface, partially containing a curing agent for the layer. Any method can be selected depending on the nature of the desired image, such as printing with ink and leaving the areas without ink as water-soluble.

<Example> - Example 1 Polyethylene terephthalate resin (PET) with a thickness of 25μ
) After applying a release layer coating to the surface of the film, a release layer was provided, and then an anchor coating for metal vapor deposition was applied to the entire surface, and then a water-soluble resin layer was partially formed in a pattern.

Polyvinyl alcohol resin was used as the water-soluble resin. Next, aluminum was deposited on the entire surface to a thickness of about 450 mm, and then washed with water to remove the aluminum deposited layer on the water-soluble resin portion.

After drying the sheet, a gravure printing machine equipped with an additional printing registration device was used to print the same pattern on the partially vapor-deposited layer and the non-vapor-deposited layer, and then a transparent adhesive layer was provided. The part printed on the vapor deposited layer is gold.

A partially vapor-deposited transfer foil for the back side was obtained which had a metallic tone such as copper or bronze and was rich in variety as a whole.

- Example 2 A release layer was provided on the surface of a 25 μm thick PET film, and then a water-soluble resin containing polyvinyl alcohol as a main component was applied to the entire surface. Next, a pattern corresponding to the metal-deposited area was printed using ink containing incyanate resin. Next, aluminum was deposited on the entire surface to a thickness of about 45 OA, and then washed with water to remove the aluminum deposited layer in areas other than the ink containing the isocyanate resin. After drying the sheet, a pattern matching the vapor-deposited layer and non-vapor-deposited layer 1 was printed using a gravure printing machine equipped with a residual registration device, and a transparent adhesive layer was further provided on the entire surface. Obtained transfer foil for the back side &”Z
The pattern matched the partially vapor-deposited and non-vapor-deposited parts, giving it an extremely high design quality.

<Effects of the Invention> According to the method of manufacturing the partially vapor-deposited transfer foil for back side transfer of the present invention, the metal vapor-deposited part and the pattern layer can be applied in separate processes, safely and inexpensively, without using acid or alkaline solutions. Therefore, it is possible to create an extremely flexible design expression, and it is an excellent product that mixes printing expressions without a metallic feel, colored transparent expressions, and printing expressions with a metallic feeling in equal coordination. A partially vapor-deposited transfer foil for back side transfer can be obtained.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view illustrating the manufacturing process of the partially vapor-deposited transfer foil for back side transfer of the present invention, and (a) is a sectional view illustrating the manufacturing process of the partially vapor-deposited transfer foil for backside transfer of the present invention. In (B), metals were vapor-deposited on the entire surface and then washed with water. In G/→, a pattern layer was applied by printing on top of that, and a transparent adhesive layer was further applied over the entire surface. Show the place. Further, FIG. 2 shows another embodiment of the present invention, (
In (a), a release layer and a water-soluble resin layer are first provided on the base film, and then a pattern layer is formed using an ink containing a curing agent for water-soluble resin, and in (b), metals are vapor-deposited on the entire surface. When I finished washing with water, (/-1
1 shows a pattern layer on which a pattern layer is applied by printing, and a transparent adhesive layer covering the entire surface is further provided.

Claims (1)

[Claims] 1. After providing a release layer as necessary on the base film, a release layer is provided, and further a water-soluble resin layer is partially provided by any means, and then a full-surface vapor deposition layer is provided. form, then
The metal vapor deposited layer in the water-soluble portion is removed by washing with water, and after drying, the partially remaining metal vapor deposited layer portion and other portions may or may not be subjected to the same adjustment. A method for producing a partially vapor-deposited transfer foil for reverse side transfer, which comprises printing a predetermined pattern layer and further applying a transparent adhesive. 2. The method for producing a partially vapor-deposited transfer foil for backside transfer according to claim 1, which comprises a step of printing and forming a pattern layer on a release layer and/or a peeling layer. 3 After providing a release layer as necessary on the base film, a release layer is provided, and a water-soluble resin layer is further provided over the entire surface, and a curing agent for the water-soluble resin is partially added on top of this by any means. After forming a pattern layer containing a pattern layer, a vapor-deposited layer is formed on the entire surface, and then a water-washing treatment is performed to remove the metal vapor-deposited layer on the uncured part of the water-soluble resin, and then, after drying, this part is Partially vapor-deposited transfer foil for back side transfer, characterized in that a predetermined pattern layer is printed on the remaining metal vapor-deposited portion and other portions, with or without matching, and a transparent adhesive is further applied. manufacturing method. 4. The method for producing a partially vapor-deposited transfer foil for backside transfer according to claim 3, which comprises a step of printing and forming a pattern layer on the release layer and/or the peeling layer.