JPS6239300A - Transfer sheet - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a transfer sheet in which a transfer material is laminated on a base film, and is used when transferring to paper by hot stamping.

(Prior art and its problems) Generally, a transfer sheet such as a stamping foil is made by laminating a transfer material consisting of a metal vapor deposition layer, a synthetic resin layer, a synthetic resin paint layer, etc. on a base film via a release layer. The transfer material is transferred onto the surface of the article in a pattern by placing it on a synthetic resin film, fabric, leather, leather, or other article with the base film on the outside, and applying pressure or heating. It is used to

However, with this transfer sheet, even when it is transferred to paper, the transfer material is simply deposited in a pattern on the base film on the surface of the paper, and it is not possible to form a pattern-shaped transparent part on the paper. Even if the transfer material was transparent, it was only possible to express a glossy pattern.

This is because the transfer material is made of non-impregnated material, which is adhered to the paper with an adhesive.

That is, the transfer sheet is used to transfer a transfer material onto the surface of an article in a pattern, and the adhesive is applied in advance to the surface of the article to be transferred in a pattern and the transfer sheet is polymerized and pressed. , a transfer sheet is polymerized onto the article using a hot-melt adhesive, and then heated and pressed with a pattern mold.Then, when the base film is peeled off, the material to be transferred is applied to the surface of the article in the desired pattern. Glue.

Therefore, impregnating paper with transfer material is not planned at all.

(Technical Problem) An object of the present invention is to provide a transfer sheet in which a transfer material is laminated on a base film so that paper can be impregnated with the transfer material by hot stamping.

(Technical Means) The technical means for solving this technical problem is to provide a coating layer on the surface by applying and drying an emulsion containing a mixture of a wax dispersion liquid and a resin liquid.

(Effect of technical means) Since the wax dispersion is mixed with the resin liquid, when it is applied and dried on the surface of the base film or the transfer material laminated thereon, a film-like coating layer is formed. .

Since the transfer sheet is polymerized onto paper with its base film side facing outward, the coating layer containing a mixture of wax and resin components comes into direct contact with the paper.

When the transfer sheets are stacked and heated from the outside of the base film, the coating contains wax, so it easily melts and impregnates the paper.

Therefore, when a pattern die is pressed against the transfer sheet and heated, only the wax heated by the convex portions that make up the pattern of the die melts, making it possible to impregnate the paper with the transfer material by hot stamping. This is the translation.

(Effects of the present invention) As described above, as a result of being able to impregnate paper with wax in a pattern, highly transparent areas can be formed in a pattern, and a completely new paper pattern can be created. This makes it possible to diversify the methods of expressing patterns.

One way to form transparent parts on paper is to print a wax component dissolved in a solvent onto the paper. However, when characters or designs are expressed on paper by printing, both the solvent and wax are impregnated into the paper, and then the solvent evaporates. There was a drawback that the design was blurry. In contrast, in the present invention, the hot stamping method instantaneously melts the film layer made of wax and resin components and impregnates it into the paper, so the letters and designs do not bleed and the transparent parts appear sharp. It has the advantage of being able to form

(Embodiment) The coating layer in the above technical means may constitute the entire outermost layer of the transfer sheet, or may constitute only a part of the outermost layer.

Further, when only a transparent portion is provided on paper, a coating layer may be provided directly on the base film.

When forming a colored transparent pattern on paper, it is sufficient to mix a dye into a wax dispersion or a resin liquid, or it is also possible to provide coatings of different colors in advance in a pattern and transfer the entire pattern.

The dye that colors the coating must be oil-based, since it must be impregnated into the paper with the molten wax.

The thickness of the coating layer may be selected depending on the thickness of the paper and the desired transparency. In other words, in the case of thin paper, sufficient transparency can be achieved even if the coating layer is made thin, but in the case of thick paper, transparency cannot be achieved unless the coating layer is also thick and the wax component is increased. will fall.

(Example) Next, a specific example of the above technical means will be explained with reference to the drawings.

A mixture of a liquid in which carnauba wax is uniformly dispersed in the solvent toluene and a polyester resin liquid is placed on a base film (2) made of polyethylene terephthalate by approximately 30 μm.
Apply to a thickness of 100 mL and let dry.

When the liquid mixture dries, a transfer sheet (1) is formed with a hardened coating layer (3) on a base film (2).
(See Figure 1).

Place this transfer sheet (1) with the coating layer (3) on the bottom for about 70 minutes.
When polymerized on Japanese paper (4) of 0μ and heated and pressed with a pattern (triangular pattern in this example) from the outside of the base film (2), a triangular film melts and impregnates the Japanese paper (4). However, only that part became transparent (5) (see Figure 2).

[Brief explanation of the drawing]

The drawings are for explaining specific examples of technical means.
FIG. 1 is a cross-sectional view of the transfer sheet, and FIG. 2 is a plan view of Japanese paper hot-stamped with the transfer sheet.

Claims (4)

[Claims] (1) A transfer sheet in which a transfer material is laminated on a base film, and has a coating layer on the surface of which an emulsion of a wax dispersion and a resin liquid is coated and dried. (2) The transfer sheet according to claim 1, wherein the coating layer is the outermost layer of the transfer material. (3) The transfer sheet according to claim 1, wherein the coating layer is formed directly on the surface of the base film. (4) The transfer sheet according to claim 1, 2, or 3, wherein the coating layer contains an oil-based dye.