JPS61290087A - Transfer sheet with metallic lustrous pattern - Google Patents

Abstract

PURPOSE:To provide sharp and clear patterns and enable them to be transferred onto a transfer recording material while maintaining beautifulness, by a method wherein a metallic lustrous pattern is provided by providing a desired print pattern layer of an acid-resistant or alkali-resistant ink on a vapor-deposited metallic layer and etching away non-pattern parts of the metallic layer by an acidic or alkaline solution, and a releasable layer is provided by hardening a thermosetting resin. CONSTITUTION:The print pattern layer 7 is provided by using a plurality of different color inks, for example, by providing a print pattern layer 7a in a transparent ink and providing a print pattern layer 7b in a colored ink. After providing the desired print pattern layer 7 on the vapor-deposited metallic layer 6, the material is immersed in an acidic or alkaline solution to etch away the layer 6 at the parts not provided with the pattern layer 7. One or more releasable layers are provided on one side of a film base 2 of the transfer sheet 1, and at least one thereof is formed of a hardened thermosetting resin.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a transfer sheet having a desired pattern of metallic luster formed by removing a portion of a metal vapor deposited layer.

[Conventional technology]

Conventionally, as a transfer sheet with a metallic luster pattern.

■After partially applying water-soluble resin on the base material, metal vapor deposition is performed, and the water-soluble resin is dissolved by immersion in water, and the metal vapor-deposited layer at the position corresponding to the water-soluble resin layer is dissolved in water. A metal luster pattern is formed by washing it off with a water-soluble resin. ■A water-soluble resin is applied to the entire surface of the base material, and the water-soluble resin layer is coated with a water-soluble resin that acts on the water-soluble resin layer to improve its solubility in water. A vapor-deposited protective layer containing an additive that lowers the temperature is partially provided, and the part of the water-soluble resin layer that is not coated with the vapor-deposited protective layer is dissolved in water by immersing it in water to correspond to the water-soluble resin layer. It is known that a metallic luster pattern is formed by washing off the metal vapor deposited layer at certain positions.

[Problem that the invention seeks to solve]

However, the transfer sorting described in 7) has the disadvantage that the water-soluble resin is not uniformly dissolved and removed, the pattern of the metal vapor deposited layer becomes unclear, and a sharp metallic luster pattern cannot be obtained. The transfer sheet (■) has the same drawbacks as the transfer sheet (■).

Partial insolubilization of the water-soluble resin layer by the vapor-deposited protective layer lacks stability, and the water-soluble resin layer may partially dissolve even in areas where the vapor-deposited protective layer is applied, causing the metallic luster pattern to collapse and become unclear. There is a drawback.

Moreover, in conventional transfer sheets, the release layer provided to facilitate peeling off the base material after transferring the pattern on the transfer sheet to the transfer material is formed of thermoplastic resin. When transferring, it is complicated to adjust the temperature above the melting point of the resin forming the release layer, and there are problems such as the pattern on the transfer sheet being transferred in a deformed manner.

The present invention has been developed in view of the above points, and has a clear and sharp metallic luster pattern, and the peeling layer may melt due to heating during transfer, making it difficult to peel off the base material or deforming the pattern. An object of the present invention is to provide a transfer sheet having a metallic luster pattern that is free from the risk of being transferred.

[Means for solving problems]

A transfer sheet having a metallic luster pattern according to the present invention.

A film base material having heat resistance, one or more release layers provided on one side of the base material, a metal vapor deposited layer over the entire surface of the release layer, and an acid resistant and resistant film on the metal vapor deposit layer. A printed pattern layer with a desired pattern is formed using an alkaline ink, and the metal vapor deposited layer in the area where the printed pattern layer is not formed is dissolved and removed using an acidic or alkaline liquid. A printed pattern layer made of an alkali-resistant ink and a metallic luster pattern made of K.

and an adhesive layer provided on the metallic luster pattern side, and has a structure in which at least one layer of the release layer is formed from a hardened thermosetting resin.

〔Example〕

Hereinafter, nine embodiments of the present invention will be described based on the drawings.

FIG. 1 shows an embodiment of a transfer sheet 1 having a metallic luster pattern according to the present invention, and 2 is a film base material. As the film base material 2, a heat-resistant resin film is used.For example, a polyester film (2
(axially oriented polyethylene terephthalate film, etc.), nylon film with a thickness of 12 to 100μ, 12 to 50μ in thickness
Examples include polypropylene film. Furthermore, if a stretched resin film such as the above-mentioned biaxially stretched polyethylene terephthalate film is used as it is as the film base material 2, it will shrink due to heating during transfer, so an annealing treatment is performed by heating it for 20 to 30 minutes in a tension-free state. It is preferable to use the one that has been applied.

In the transfer sheet 1 of the present invention, one or more release layers are provided on one side of the film base material 2.

At least one layer among them needs to be formed from a hardened thermosetting resin. In the embodiment shown in FIG. 1, 3 is a first release layer made of thermoplastic resin provided as necessary;
4 is a second release layer formed by curing a thermosetting resin. The thermoplastic resin used for the first release layer 3 is a thermoplastic acrylic resin, vinyl chloride-vinyl acetate copolymer.

Chlorinated polyolefin, chlorinated rubber, acetic acid cell.

If necessary, wax, fatty acid amide, silicone, etc. may be added to these thermoplastic resins as peeling aids. The thermosetting resin used for the second release layer 4 is a thermosetting acrylic resin.

Examples include amino alkyd resins, phenol-modified alkyd resins, urethane resins, mixtures of acrylic resins, epoxy resins, and amino resins. The peeling layer 3.4 is provided to peel off the film base material 2 after transfer,
When the first peeling layer 3 made of thermoplastic resin is provided as described above, the heat resistance against the heat of vapor deposition is improved.
It has the effect of preventing crowbar phenomenon. Gravure coating, roll coating, silk screen printing, offset printing, etc. are used as the means for forming the release layer 3.4.
The second release layer 4 is coated to a thickness of 5μ, and after coating,
It is formed by heating and curing.

5 is a metallic luster pattern, and the metallic luster pattern 5 is a partially deposited layer 6.
a, and a printed pattern layer 7 formed of ink having acid resistance and alkali resistance. In forming the metallic luster pattern 5, first a metal vapor deposition layer 6 is provided over the entire surface of the second peeling layer 4, as shown in FIG. Examples of the metal used to form the metal vapor deposition layer 6 include aluminum, silver, antimony, and chromium, but aluminum is usually used and is vapor deposited by a conventionally known vapor deposition method. Metal vapor deposition layer 6 is 100-8
It is preferable to form it to a thickness of 00A, particularly 400 to 500A. Next, a printed pattern layer 7 having a desired pattern is provided on the metal vapor deposited layer 6 using acid- and alkali-resistant ink. Examples of the acid- and alkali-resistant ink vehicle used in the printed pattern layer 7 include vinyl chloride.
Mixture of vinyl acetate copolymer and acrylic resin, mixture of polyamide and nitrocellulose resin, vinyl chloride
Examples include a mixture of a vinyl acetate copolymer and an incyanate compound, a mixture of a nitrocellulose resin, an iso7anate compound, and an acrylic resin. The pigment used in the above ink is also a pigment that has acid resistance and alkali resistance, and examples of such raw materials include titanium oxide and carbon black.

Bengara, silver vermilion, brilliant first scarlet, hermanent red F2R, toluidine maru, -n, cobalt violet, cobalt blue.

Examples include chromium oxide, indanthrene pigments, barium sulfate, and silica. The printed pattern layer 7 is formed by printing in a desired pattern using the above acid-resistant and alkali-resistant ink, and printing methods include screen printing, gravure printing, offset printing, gravure offset printing, and the like.

Further, the printed pattern layer 7 can be formed using inks of a plurality of different colors, for example, the printed pattern layer 7a is formed using transparent ink, and the printed pattern layer 7b is formed using colored ink.

After printing the desired pattern and forming the pattern layer 7 on the metal vapor deposited layer 6 as described above, the metal vapor deposition layer 6 in the areas where the printed pattern layer 7 is not formed is immersed in an acidic or alkaline solution. Dissolve and remove.

Examples of the acidic solution include an aqueous solution of hydrochloric acid having a pH level of IN or an organic acid or inorganic acid solution having a pH of the same level.
Examples of alkaline solutions include 0.2 to 0.5 N hydroxide aqueous solution, and organic and inorganic base solutions having a pH of the same level. After immersing for 10 to 60 seconds, washing with water dissolves and removes the metal vapor deposited layer 6 in the area where the printed pattern layer 7 is not formed.
The metal vapor deposited layer 6 in the portion where the printed pattern layer 7 is formed remains as a partial vapor deposited layer 6a, and the metallic luster pattern 5 is formed by the partially vapor deposited layer 6a, the printed pattern layer 7, and K.

An adhesive layer 8 is provided on the side of the metallic luster pattern 5 formed as described above, thereby forming the transfer sheet 1 of the present invention. Adhesive layer 8 is made of acrylic resin.

Vinyl acetate resin, rubber resin, olefin resin.

Hinychloride-vinyl acetate copolymer, epoxy resin.

Diaryl phthalate resin or a mixture of epoxy resin, melamine resin, and acrylic resin is used, and these resins are applied by methods such as gravure coating, roll coating, and silk screen printing.

The transfer sheet of the present invention is used by stacking the adhesive layer 8 on the transfer material 9 so that it is in contact with it, as shown in FIG. By adhering the transfer material 9 and the adhesive layer 8, and then peeling off the film base material 2, a product having the metallic luster pattern 5 is obtained. Although not particularly shown, the film base material 2
The transfer sheet of the present invention is placed in the cavity mold so that it is in close contact with the cavity mold surface of the injection mold, and after the molten resin is injected into the mold and molded, the film base material 2 is peeled off. A molded product having a metallic luster pattern can also be produced by the method described above. In either method, it is efficient to use a rolled-up transfer sheet.9 The transfer sheet of the present invention can be manufactured by continuously forming each layer on a continuous film base material. In particular, when used in the form of a wound roll, efficient transfer becomes possible.

The present invention will be explained in more detail by giving specific examples below.

Example 1 A transparent polyester film (Nilmirror 5-10: 38μ manufactured by Toshi) which was annealed by heating at 180°C for 30 minutes in a tension-free state was used as a film base material, and one side of the film was coated with thermoplastic acrylic resin. After forming the first release layer by coating at a coating weight of 1/m'', a thermosetting acrylic resin consisting of an acrylic resin and methylolated melamine was coated at a coating weight of 19/rt, and heated at 180°C. The second release layer was cured by heating for 1 minute.Next, aluminum was vapor-deposited over the entire surface of the second release layer to form a 500A aluminum vapor-deposited layer, and Dainichiseika Co., Ltd. Perform gravure printing using VM-PEARL ink manufactured by ■ to form a printed pattern layer, and after drying the ink,
After immersing it in a 2.3N aqueous sodium hydroxide solution at .degree. C. for 10 seconds, it was washed with water to form a metallic luster pattern. After drying, apply 1 layer of thermoplastic acrylic resin adhesive to the metallic luster pattern side.
Apply with a coating amount of lil/m to form an adhesive layer,
A transfer sheet was obtained.

Next, the transfer sheet was vacuum-adhered so that the film base surface was in contact with the cavity mold surface of the injection mold, and then an acrylic resin (Mitsubishi Rayon: Acrybet) M was applied.
F) was melted at 270°C and injection molded at a mold temperature of 60°C, and after being taken out from the mold, the film base material was peeled off. The obtained molded product had a sharp and clear metallic luster pattern.

Example 2 After forming a first release layer, a second release layer, and an aluminum vapor deposition layer on the same transparent polyester film as used in Example 1, a silk screen ink (manufactured by Dainichiseika Chemical Co., Ltd., VM - Using PEARL silk ink), print while continuously unwinding a transparent polyester film to form a printed pattern layer, and after drying the ink at 40°C.
immersed in a 2.5N aqueous sodium hydroxide solution KIO for seconds,
Subsequently, it was immersed in a 0.25 N aqueous hydrochloric acid solution for 20 seconds to neutralize it, and then washed with water to form a metallic luster pattern.

After drying, an adhesive layer was formed in the same manner as in Example 1 to obtain a transfer sheet.

The obtained transfer sort was roll-transferred to a transparent acrylic resin plate (manufactured by Sumitomo Chemical, Sumipex HT, thickness 3fl) using a K230°C hot roll, and after the transfer, the film was peeled off.

The obtained molded product had a clear metallic luster pattern.

〔Effect of the invention〕

In the transfer sheet having a metallic luster pattern of the present invention, the metallic luster pattern is formed by forming a printed pattern layer with a desired pattern on the metal vapor deposited layer using acid- and alkali-resistant ink, and then applying an acidic or alkaline solution to the printed pattern layer. Because it is formed by dissolving and removing the metal vapor deposited layer in the areas where it is not provided, it is different from conventional transfer, which forms a metallic luster pattern by dissolving and removing the water-soluble ink and also removing a part of the metal vapor deposit layer. It has a metallic luster pattern that is sharper and clearer than a sheet. Furthermore, since the transfer sheet of the present invention has a release layer formed by curing a thermosetting resin, the release layer does not melt due to heating during transfer, unlike conventional transfer sheets with a release layer made of thermoplastic resin. Since there is no risk of the film being firmly fused to the film base material, the film base material can be easily peeled off after transfer, and the metallic luster pattern of the transfer sheet can be transferred to the transfer material without damaging its aesthetic appearance. It has the effect of being able to obtain a transferred product with a sharp and clear metallic luster pattern.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a longitudinal cross-sectional view of one embodiment of the transfer sheet of the present invention, and FIG. 2 is a longitudinal cross-sectional view showing one manufacturing process of the transfer sheet of the present invention. FIG. 3 is a longitudinal sectional view showing a state in which transfer is performed using the transfer sheet of the present invention. 1--------Transfer sheet 2 having a metallic luster pattern
-----------Film base material 3,4--Peeling layer 5----Metallic luster pattern 6----------
-Metal deposited layer 6 m---Partially deposited layer 7
-----------・Printed pattern layer 8----------1 adhesive layer

Claims (1)

[Claims] A film base material having heat resistance, one or more release layers provided on one side of the base material, a metal vapor deposited layer over the entire surface of the release layer, and an acid resistant and resistant film on the metal vapor deposit layer. A printed pattern layer with a desired pattern is formed using an alkaline ink, and the metal vapor deposited layer in the area where the printed pattern layer is not formed is dissolved and removed using an acidic or alkaline liquid. It consists of a metallic luster pattern formed by a printed pattern layer made of an alkali-resistant ink, and an adhesive layer provided on the metallic luster pattern side, and at least one of the release layers is a hardened thermosetting layer. A transfer sheet having a metallic luster pattern, characterized in that it is made of resin.