JPS6311389A - Transfer base paper - Google Patents

Abstract

PURPOSE:To obtain a transfer image having metal gloss, by a method wherein a release layer, a colored synthetic resin layer, a metal vapor deposition layer and a soluble protective layer are successively formed to the single surface of a support film and the metal vapor deposition layer is soluble in an acid or an aqueous alkali solution and has permeable pores and the colored synthetic resin layer is made easily soluble as compared with the metal vapor deposition layer. CONSTITUTION:A release layer 2, a colored synthetic resin layer 3, a metal vapor deposition layer 4, a soluble protective layer 5 and a photoresist layer 6 are successively formed to the single surface of the support film 1 of transfer base paper and the layer 6 is exposed to a desired transfer image in such a state that a negative film 7 is closely adhered to the layer 6 to cure the photoresist layer 6a under a bright part 8 and, when the negative film is removed to wash the photoresist layer, an uncured part 6b is washed off to form a photoresist image 9. When the soluble protective layer 5, the metal vapor deposition layer 4 and the colored synthetic resin layer 3 having no resist image 9 are subjected to etching treatment by an acid or an aqueous alkali solution, since the metal vapor deposition layer 4 is slow in dissolution because thinly covered with a stable oxide film but the colored synthetic resin layer 3 is easily soluble, said resin layer 3 is rapidly dissolved in an etching solution. All of the colored synthetic resin layer 3, the metal vapor deposition layer 4, the soluble protective layer 5 and the photoresist layer 6 remaining on the support film 1 come to a transfer image constitutional material and, when a pressure-sensitive adhesive is applied or sprayed to the part where a transfer image 10 is formed, transfer paper is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a base paper used for producing dry transfer paper.

Conventional technology A colored self-retaining film for transfer of images such as letters and figures is adhered to a support made of a transparent plastic film to a degree that allows it to be peeled off, and then the top is coated with a pressure-sensitive adhesive. The dry transfer paper is easy to transfer by simply touching the surface of the adhesive layer with the surface of the object to be transferred and applying pressure from the back. Various drawings, lettering for illustrations,
It is widely used for creating logotypes, symbol marks, television captions, etc.

Conventionally, when manufacturing this dry transfer paper, in order to form a transferable image on a support film, Japanese Patent Publication No. 39-1761 was used.
Printing methods have been adopted as described in Publication No. 4, Publication No. 47 of Utility Model Publication No. 55-424, and the like. This method is suitable for producing large quantities of transfer paper with the same frequently used images (for example, images of Roman letters, kana letters, numbers, etc.), but because of the high platemaking costs, it is not suitable for small quantity production. There was a problem in that the value of 11 of the product became extremely high. Therefore, as the convenience of dry transfer paper has been recognized and it has become widely used, there has been a desire for a means to produce small lots of transfer paper at low cost without using printing methods.

One of the image forming materials for transfer paper that was devised to meet such demands was the Utility Model Application published in 1983 by one of the present inventors.
It is disclosed in the specification of No. 8321 (Utility Model Application Publication No. 6-252+-10), and is a colored base sheet comprising a water-resistant base sheet and a single color coating layer of 11 water-based paint on one side. It consists of a combination of a photosensitive +14 fat and a volatile organic solvent.

New year! The present invention solves the problem of producing small-lot transfer paper without using a printing method by using a specific organic solvent as proposed in Utility Model Application No. 108321/1983. This is an attempt to solve the problem by using more advantageous means than using .

Another object of the present invention is to utilize the printing method described above.
It is an object of the present invention to provide a transfer paper base paper capable of producing a transferred image having a metallic luster, which was not possible even with the material of No. 9-18321.

Means for Solving the Problems The transfer paper base paper provided by the present invention, which has succeeded in achieving the above objects, has a release agent layer, a colored synthetic resin layer, a metal vapor deposited layer and a soluble protective layer on one side of the support film. The metal vapor deposited layer is soluble in an acid or alkali aqueous solution and has pores through which the aqueous solution can pass, and the colored synthetic resin layer is an acid or alkali aqueous solution that dissolves the metal vapor deposit layer. It is characterized by being more easily soluble than a metal vapor deposited layer.

The present invention also saves the user of the transfer paper base paper the trouble of applying photoresist to the transfer paper base paper when manufacturing the transfer paper by the method described later, and the outermost layer and a portion (- The present invention also provides a transfer paper base paper provided with a photoresist layer.

In the transfer paper base paper of the present invention, the support film is a support for the release agent layer, the colored synthetic resin layer, the metal vapor deposited layer, and the soluble protective layer (and photoresist layer), and is After finishing the development process, it serves as a support for a transferable image. Therefore, as the material, a plastic film that is water resistant, chemical resistant, and has good monthly stability, such as a biaxially oriented polyethylene terephthalate film, is used.

The release agent layer of support film-1 is colored and synthesized with the support film! + By adjusting the peeling adhesion strength between the base paper and the oil layer, when performing image transfer on the transfer paper made from this transfer paper base paper, colored synthetic jH fat debris is removed from the support film (actually from the release agent layer). ) Make sure you leave smoothly. Examples of materials constituting the release agent layer include paraffin; however, the release agent layer in the transfer paper base paper of the present invention may be a thin coated film of such a material, or a material such as a polyethylene film.
Even if the surface thereof is coated with a colored synthetic resin layer-constituting material, the plastic film may function as a release agent layer without strong adhesion.

The colored synthetic resin layer, which is lightly adhered to the support film via the release agent layer, constitutes a part of the film that forms the transferred image, and also serves as a material for coloring the transferred image, and it is difficult to remove at room temperature. The main material is resin that easily dissolves in acids or dilute alkalis, and is colored with dyes or pigments. This layer is required to have the property of being more easily soluble than the metal vapor deposited layer in an acid or alkali aqueous solution that dissolves the metal vapor deposit layer. This means that there is a difference in solubility to such an extent that a phenomenon in which flakes of the metal vapor-deposited layer peel off (or can be peeled off by lightly rubbing) due to the remarkable progress of dissolution of the synthetic resin layer. Note that when the coloring material is a dye, the colored synthetic resin layer is transparent and the metal vapor deposited layer can be seen through, so that the transferred image has a metallic luster.

On the other hand, when the coloring material is a pigment, the colored synthetic resin layer becomes opaque and the metal vapor deposited layer is not visible, so that the transferred image is similar to an image printed using ordinary printing ink.

The second metal vapor-deposited layer of the colored synthetic resin layer is formed by vacuum-depositing a dilute acid- or alkali-soluble metal, such as aluminum, by a conventional method. There are countless and evenly distributed pores with complex shapes.

Such pores are commonly formed in the vapor-deposited film of decorative aluminum vapor-deposited films having a film thickness of about 100 Å or less, and therefore, these pores are formed in the vapor-deposited layer of the transfer paper base paper of the present invention. There is no need to adopt a special deposition method to form the pores, and the thicker the pores are, the smaller the diameter and the fewer the number of pores. In the case of the transfer paper base paper of the present invention, as will be described later, an aqueous acid or alkali solution is allowed to reach the colored synthetic resin layer through these pores in the development process, so that the metal vapor deposition B4 disappears.1) From 1j to the colored synthetic resin It is not preferable to use a deposited film that is thicker than necessary and has fewer pores, since this will promote the dissolution of the layer. A vapor deposited film that has sufficient pores and has sufficient light reflectance is an aluminum vapor deposited film with a thickness of about 4 mm.
00 to 600 people.

Soluble-1'! The protective layer is made of a synthetic resin that is soluble in organic solvents or acidic or alkali aqueous solutions mixed with pigments, plasticizers, etc., and is used to prevent the metal vapor deposited layer from being damaged by abrasion, oxidation, contamination, etc. It is provided.

Therefore, this layer can be omitted if a photoresist layer is provided as the outermost layer.

When a photoresist layer is provided as the outermost layer, this layer is formed by coating a photosensitive resin mixed with an appropriate amount of water-soluble 0 (fat) dissolved in water.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a method for producing a transfer paper using the transfer paper base paper of the present invention will be explained without reference to the drawings.

FIG. 1 is a schematic cross-sectional view of a transfer paper base paper according to the present invention,
A release agent layer 2, a coloring table t, a resin layer 3, a metal vapor deposition layer 4, a soluble protective layer 5, and a photoresist layer 6 are sequentially formed on one side of the support film 1 (base paper without the photoresist layer 6 is shown). When used, a photoresist layer 6 is first formed by applying a thin layer of photosensitive resin on the soluble protective layer 4.)

A negative film 7 of a desired transfer image is brought into close contact with the photoresist layer 6 of this transfer paper base paper and exposed to light.
The photoresist layer 6a under the photoresist layer 6a is cured, and then the negative film 7 is removed and washed with water to wash out the uncured portion 61 of the photoresist layer 6, thereby forming a photoresist image 9 (FIG. 3).

Next, an etching process is performed to dissolve and remove the soluble protective layer 5, metal vapor deposited layer 4, and colored synthetic resin layer 3 in the areas where the photoresist image 9 is not present. First, if the soluble protective layer 5 is only soluble in an organic solvent, this layer is removed by treatment with an organic solvent. If this layer is soluble in an acid or alkali aqueous solution (hereinafter referred to as etching solution) that dissolves the metal vapor deposited layer 4 and the colored synthetic resin layer 3, no special treatment is required to remove only this layer. When the film is then treated with an etching solution, the protective layer 5, if any, which is soluble in the etching solution is first dissolved, and then the metal vapor deposited layer 4 and the colored synthetic resin layer 3 begin to dissolve at the same time. In other words, since the metal vapor deposited layer 4 is thinly covered with a stable oxide film, dissolution is slow;
Since the colored synthetic resin rCIJ3 was originally selected to be easily soluble in the etching solution, it quickly dissolves in the etching solution that penetrates through the pores of the metal vapor deposited layer 4. The dissolved colored synthetic resin layer constituents diffuse into the etching solution in the etching tank via the pores. During this time, the metal on the pore wall also progresses and the pore diameter increases, so
The dissolution of the colored synthetic resin layer 3 accelerates, and eventually most of the colored synthetic resin layer 3 melts and the metal vapor deposited layer 4 loses its base. The metal vapor deposited layer 4, which has become thinner and has significantly larger pore diameter by this time, collapses and becomes fine powder before being completely dissolved and separates from the support film 1. When etching is completed in this manner, the state shown in FIG. 4 is formed.

Colored synthetic resin layer 3, metal vapor deposited layer 4, soluble protective layer 5 and photoresist JvI remaining on support film 1-1-
6 are all transfer image constituent materials.

After taking it out from the etching tank, washing it with water, and drying it, a pressure-sensitive adhesive is applied or sprayed on the entire surface or on the area where the transferred image 10 or I# has been made, to obtain a transfer paper. The pressure-sensitive adhesive used in this case may be one commonly used for dry transfer paper, such as acrylic resin, polyisobutylene, polyvinyl ether, or the like.

The method of using the obtained transfer paper is the same as that of conventional transfer paper, in which the pressure-sensitive adhesive-coated surface is brought into contact with the surface to be transferred, such as paper, and pressure is applied from the support film 1 side. As a result, the transferred image 10
adheres to the paper, and its peel strength is greater than the peel strength between the support film 1 and the colored synthetic 01 oil layer 3, so if the support film 1 is removed, the transferred image will separate from the support film. Move to paper. When the colored synthetic resin layer 3 is colored with a dye, the transferred image exhibits metallic luster because the metal vapor deposited layer 4 can be seen through.

A transfer paper base paper having the following structure was manufactured by the method described in the notes.

Support film thickness: about 70/J Stretched polyester film Release agent layer Paraffin (applied as a solution in 11-hexane) Colored synthetic resin layer Alkali-soluble rosin modified maleic acid + J (mainly composed of fat and an appropriate amount of yellow dye) (Water-methanol 21), dissolved in a liquid and applied).

Metal vapor deposited layer Aluminum vapor deposit layer with a thickness of about 500 mm by conventional method Soluble protective layer consisting of hydroxyethyl cellulose, glycerin and white pigment for opacity (coated with aqueous solution) Photoresist layer Polyvinyl cinnamate with carboxymethyl cellulose added (applied with an aqueous solution).

This transfer paper base paper was used as an etching solution containing 1% potassium carbonate.
After exposure, development was performed using an aqueous solution (20'C) according to the method described above to produce a transfer paper. Etching was completed in 15 seconds, and the image formed was extremely clear with almost no side corrosion.

Furthermore, the transferred image obtained by transferring this onto paper was a beautiful, golden, shiny image.

According to the present invention, it is possible to easily produce dry transfer paper without using a printing method as described above, and there is no need to use an organic solvent as an etching solution for development. This makes it extremely easy to manufacture small lots of transfer paper. Furthermore, according to the present invention, a transferred image exhibiting metallic luster, which has been difficult to obtain with conventional dry transfer paper, can be easily obtained.

The transfer paper base paper of the present invention is particularly superior because it combines a specific metal vapor-deposited layer and a colored synthetic resin layer, so that during development, etching does not occur on the colored synthetic resin without waiting for the surface metal vapor-deposited layer to disappear. By rapidly advancing from layer to layer, this results in an extremely short etching time and a sharply contoured image with almost no side corrosion.

[Brief explanation of drawings]

FIG. 1 2 A sectional view 1 showing an example of the transfer paper base paper according to the present invention
Figures 2 to 4: Explanatory diagram of the process of producing transfer paper using the transfer paper base paper in Figure 1

Claims (8)

[Claims] (1) A release agent layer, a colored synthetic resin layer, a metal vapor deposited layer, and a soluble protective layer are sequentially formed on one side of a support film, and the metal vapor deposit layer is soluble in an acid or alkali aqueous solution, and the above aqueous solution is A transfer paper base paper having permeable pores and characterized in that the colored synthetic resin layer is more easily soluble than the metal vapor deposited layer in an acid or alkali aqueous solution that dissolves the metal vapor deposited layer. (2) The transfer paper base paper according to claim 1, wherein the metal vapor-deposited layer is an aluminum vapor-deposited layer having a thickness of about 400 to 600 Å. (3) The transfer paper base paper according to claim 1, wherein the colored synthetic resin layer is a transparent synthetic resin layer colored with a dye. (4) The transfer paper base paper according to claim 1, wherein the colored synthetic resin layer is an opaque synthetic resin layer colored with a pigment. (5) A release agent layer, a colored synthetic resin layer, a metal vapor deposited layer and, if necessary, a soluble protective layer are sequentially formed on one side of the support film, and a photoresist layer is further provided as the outermost layer. Or, the colored synthetic resin layer is soluble in an aqueous alkali solution and has pores through which the aqueous solution can pass, and the colored synthetic resin layer is more easily soluble than the metal vapor deposited layer in an acid or alkali aqueous solution that dissolves the metal vapor deposited layer. Characteristic transfer paper base paper. (6) The transfer paper base paper according to claim 5, wherein the metal vapor deposited layer is an aluminum vapor deposited layer having a thickness of about 400 to 600 Å. (7) The transfer paper base paper according to claim 5, wherein the colored synthetic resin layer is a transparent synthetic resin layer colored with a dye. (8) The transfer paper base paper according to claim 5, wherein the colored synthetic resin layer is an opaque synthetic resin layer colored with a pigment.