JPS6169499A - Iris transfer foil - 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 [Industrial Field of Application] The present invention relates to an iris-treated transfer foil, that is, an iris transfer foil.

[Prior Art] Various iris transfer foils for transferring an iris pattern to a molded object have been proposed.

For example, iris transfer foils using iris thin film layers deposited with special compounds such as S (zinc sulfide, titanium oxide, tin oxide, magnesium fluoride, and iodized steel).

B. Iris 1111 made of a thin film layer of titanium oxide as described in Japanese Patent Publication No. 37-8731! Iris transfer foil using.

C. An iris transfer foil using an iris thin film layer consisting of a light reflecting film, an uneven interference resin film, and a translucent metal i-film as described in Japanese Patent Publication No. 52-1413 can be mentioned.

However, each of these conventional iris transfer foils and methods of manufacturing them has drawbacks.

For example, in A, the laminated material is special and generally has a high 1i, and in order to fabricate A, it is necessary to deposit these materials unevenly to an optical thickness of approximately 10oOÅ or more, which makes it unsuitable for mass production. The resulting iris transfer foil makes it difficult to adjust the iris pattern to any desired pattern.

In addition, since titanium tetrachloride gas is used as a raw material, chlorine gas is generated, which poses problems such as the health of workers during production, corrosion of production equipment, and environmental pollution, making it unsuitable for production. Even if produced, iris transfer foil would be expensive due to pollution control costs and other costs.

Furthermore, since the iris pattern becomes an opaque transfer foil, the appearance of the fabric of the transferred molded product is impaired. In particular, when the transferred molded product is transparent, there is a drawback that when an opaque iris pattern is transferred, the surface is completely blocked, making it impossible to obtain a transparent iris molded product.

[Problems to be Solved by the Invention] The present invention improves the drawbacks of the iris transfer foil based on the conventional iris expression technology described above, and provides any desired variety and beauty without impairing the appearance of the transferred molded product. The purpose of this study is to obtain an iris transfer foil for producing a molded iris.

[Structure and operation of the invention] The present invention provides a transfer foil in which a protective resin layer and an iris thin film layer are provided on a sheet base material directly or via a release layer, wherein the iris';sm layer is a transparent thin film layer. This iris transfer foil is characterized by being laminated with (A) and a transparent thin film layer (B) having irregularities and having a difference in refractive index from the S film layer (A) of 0.05 or more.

Hereinafter, the iris transfer foil according to the present invention will be explained with reference to FIGS. 1 to 6.

Here, the lamination order of the thin film layers is A/B/A in FIG.

Figure 2 represents A/B, Figure 3 represents B/A, and Figure 4-
FIG. 6 shows a structure in which an adhesive layer is further added.

It goes without saying that the present invention is not limited to the following explanation.

The sheet base material 1 in the present invention is exemplified by plastic films such as polyester films, polycarbonate films, polypropylene films, cellophane, glassine paper, metal films, ceramic sheets, etc., and these may have a single layer or two or more layers. It is also possible to use a material whose surface has been previously subjected to matte processing, hairline processing, spin processing, etc.

The release layer 2 in the present invention is a layer formed by coating cellulose, silicone, wax, resin, phospholipid, etc. alone or in combination on the sheet base material 1 by various known methods such as gravure coating and reverse roll coating. Usually 0.05
A film thickness of ~1°Oμ is preferred. The mold release layer 2 is not particularly necessary as long as the sheet base material has sufficient mold release properties, and the protective resin layer 3 may be provided directly on the sheet base material.

In the present invention, the protective resin layer 3 refers to acrylic resin, melamine resin, phenol resin, polyester resin, etc., applied to the release layer 2 or the sheet base material 1 by directly applying various known methods such as gravure coating and reverse roll coating. Alternatively, it is preferable that the coating is mixed and applied, and the film thickness is usually 1 to 10 .mu.m.

The protective resin layer 3 has water resistance and solvent resistance of the iris thin film layer 4,
Provided to improve chemical resistance and abrasion resistance. Also,
By coloring and patterning the protective resin B3, an even more beautiful iris pattern can be obtained.

Further, although the protective resin layer 3 is generally provided only on one side of the lower layer of the iris thin film layer 4, it can also be provided on both sides of the iris NIII layer to improve water resistance, solvent resistance, and chemical resistance.

The iris thin film layer 4 in the present invention is composed of a transparent thin film layer <A) and a transparent FIJl layer (B) having irregularities.

The transparent thin film layer (A) is exemplified by Illuji below, and is an uncolored or uncolored film having a refractive index difference of 0.05 or more from the thin film layer (B) and a visible light transmittance of 10% or more. It is a colored transparent thin film layer. Further, the i11 layer (A>) may have light scattering on the surface or inside the film, and it is particularly preferable that the visible light transmittance is 50% or more.

B. Titanium oxide, silicon oxide, zinc oxide, antimony oxide, zinc sulfide, magnesium fluoride, potassium fluoride,
A metal compound thin film layer exemplified by cryolite.

Thermoplastic resins such as copolymers of vinylidene chloride and vinyl chloride, vinyl acetate, vinyl alcohol, etc., or copolymers of polyvinyl chloride, polyvinylidene chloride, or polystyrene with vinyl chloride or styrene, etc. ``A thin film layer with fine bubbles caused by nitrogen gas etc.

C, polystyrene, polycarbonate, melamine resin,
Phenol resin, vinyl copolymer including acrylic,
A cellulose copolymer, a urethane copolymer, various curing agents for curing it, a composition having a curable functional group, a thin film layer made of an organically substituted silicon compound, the above organic material, and titanium oxide. A thin film layer made of inorganic fine particles such as aluminum oxide, zirconium oxide, etc.

2. Metal alcoholate compounds such as titanium tetraethoxide, titanium tetra-n-propoxide, aluminum triethoxide, zirconium tetra-n-butoxide, di-isopropoxytitanium bisacetylacetate, tri-n-butoxide zirconium, Chelate compounds such as ethyl acetoacetate, zirconyl ammonium carbonate, or inorganic materials with liquid film-forming properties mainly composed of zirconium, or the above inorganic materials, alkyl silicates, their hydrolysates, and colloidal silica sol. A thin film layer made of a mixture of the above-mentioned inorganic materials and organic materials such as vinyl copolymers including acrylic and fluorine-substituted polyester copolymers that do not contain aromatic rings, and silicone polymers.

111 layer (A> has a refractive index difference of 0.0 from the thin film layer (B)
If it is less than 5, the iris pattern will be unclear.

The thin film layer (A) does not necessarily need to be made of a single substance, and if the refractive index differs by 0.05 or more from the thin film layer (B), it may be a stack of two or more layers of different materials. Good too. A transparent thin film layer made of a metal compound according to A>
is deposited and laminated on the protective resin layer 3 by a so-called vacuum evaporation method or a chemical vapor deposition method such as a resistance heating or high frequency heating evaporation method, a sputtering method, an ion blating method, or the like.

The transparent i'JIQ layer (A) is thinly coated on the protective resin layer 3 by various known methods such as gravure coating, reverse roll coating, and two-roll beating.
Dry and laminate.・Thickness of thin film H (A> is 50 to 20
It is necessary to have a uniform thickness in the range of 0.000 mm and excellent transparency. This thickness is less than 50 or 20
If it exceeds 00, it will not be possible to obtain a beautiful iris Fa thin film layer.

Note that if there are fine air bubbles in the thin film layer (A), the iris will look more fantastic and the decorative effect will be greater.

The uneven transparent thin Il1 layer (B) is exemplified by the following hos, and has a refractive index difference of 0.05 or more from the thin film layer (A>) and a visible light transmittance of 10%. The above is an uncolored or colored transparent ?S film layer.Furthermore, there may be light scattering on the surface and inside of the film, and it is particularly preferable that the visible light transmittance is 50% or more.

E, W111 of transparent resins such as acrylic resin, urethane resin, epoxy resin, amino alkyd resin, polyester resin, urea melamine resin, etc. alone or in mixture!
1 layer.

, 11, by photolysis into thermoplastic resins such as copolymers of vinylidene chloride and vinyl chloride, vinyl acetate, vinyl alcohol, etc., or copolymers of polyvinyl chloride, vinylidene chloride, polystyrene and polystyrene chloride. 1IISI layer with fine bubbles due to generated nitrogen gas, etc.

, polystyrene, polycarbonate, melamine resin,
Phenolic resins, vinyl polymers including acrylics, cellulose copolymers, urethane copolymers and various curing agents for curing them, compositions with curable functional groups, and organically substituted silicon-based polymers. A thin film layer made of a compound, and a thin film layer made of the above-mentioned organic material and precipitate-free fine particles such as titanium oxide, aluminum oxide, zirconium oxide, etc.

Metal alcoholate compounds such as titanium, titanium tetraethoxide, titanium tetra-ropropoxide, aluminum triethoxide, zirconylammonium tri-n-butoxide, di-isopropoxytitanium bisacetylacetate, tri-n-butoxide zirconium, monoethyl acetate Chelate compounds such as acetate, zirconyl ammonium carbonate, or inorganic materials with liquid film-forming properties mainly composed of zirconium, or the above inorganic materials and alkyl silicates, hydrolysates thereof,
Furthermore, mixtures of colloidal silica sol, vinyl copolymers including acrylics, various fluorine-substituted polymers, polyester copolymers containing no aromatic rings, silicone polymers, and other organic materials and mixtures of the above inorganic materials. A thin film layer.

If the difference in refractive index between the uneven transparent thin 1i layer (B) and the thin film layer (A> is less than 0.05, the iris pattern becomes unclear. ) does not necessarily have to consist of a single substance, but may be a mixture of two or more substances.

The uneven transparent thin film layer (B) needs to have an uneven surface, not a uniform thickness, and the thickness range is particularly preferably from 100 to 110,000. . In addition, the degree of unevenness is 1q to create a beautiful iris pattern.
It is preferable that the difference in thickness between the concave portion and the convex portion be approximately 200 to 2,000. If it deviates from this range, no iris pattern will appear and the entire color will appear achromatic. Note that the wavelength (not necessarily constant) of the unevenness corresponds to the density of the iris pattern, so it is usually preferably about 0.5 to 10 cm, but it is not necessarily limited to this range. The uneven transparent thin film layer (B) can be applied by a general resin coating method such as roll coating or gravure coating, or a printing method.

The g-film layer (B) is not limited to those made of the various resins mentioned above, as long as the difference in refractive index from the thin-film layer (A) is 0.05 or more.

Note that if the ii++u layer (B) contains fine air bubbles, it is possible to give a fantastic effect to the iris, as in the case of the thin film layer (A).

The transparent thin film layer (A>) and the uneven transparent thin film layer (B
) becomes an iris thin film layer that can be used as an iris transfer foil due to the difference in refractive index and the unevenness of the surface of layer (B) when laminated. The iris diaphragm layer 4 is a laminated layer of A/B/A, A/B, and B/A (a beautiful iris pattern is obtained when seedlings are grown. Also, B/A/
Although a beautiful iris pattern can be obtained with B, the iris effect is not sufficient considering the increase in production cost due to the provision of the second layer B. When an adhesive layer, a protective layer, a metal layer, etc. are provided on the iris thin film layer 4 having the A/B/Δ or B/A configuration, a beautiful iris will not be lost regardless of the refractive index of these layers. However, the iris thin film layer 4 with the A/B configuration has a refractive index difference of 0.
A beautiful iris will not disappear only when an adhesive layer of 05 or higher, a protective layer, a metal layer, etc. are provided. Generally, when hanging the molded object to which transfer foil is to be transferred, such as cloth, paper, plywood, plastic sheet, etc., apply adhesive to the surface of the molded object, dry it,
There is a method in which a transfer foil is then transferred. Alternatively, there is also a method of providing the adhesive layer 5 on the iris thin film layer 4 as the outermost layer of the transfer foil in advance. As shown in FIGS. 4, 5, and 6, the adhesive layer 5
If you prepare in advance, you can easily transfer the transfer force oxs for one small molded object! The adhesive layer is generally a heat transfer type adhesive, but it may also be a room temperature adhesive layer.In this case, release paper is often pasted on top of the adhesive layer 5. .

Hereinafter, the present invention will be explained according to examples.

[Example 1] A 5-part acetone solution of cellulose acetate was coated on one side of a biaxially stretched polyethylene terephthalate film with a thickness of 25 μm using a gravure coating method, and dried at 120° C. to form a film with a thickness of about 0.2 μm. A mold layer was formed. On this mold release layer, a solution consisting of 17 parts of acrylic resin, 3 parts of melamine resin, 20 parts of methyl ethyl ketone, 20 parts of ethyl acetate, and 40 parts of toluene was applied using a gravure coating method.
Dry at
I got it. Zinc sulfide (refractive index: 2.35) was vacuum-deposited onto this protective resin layer using a Pelger type evaporator in a vacuum of 5×10 −2 Pascals. The thickness of the deposited zinc sulfide was 500 mm. A solution of nitrocellulose (refractive index 1.51) in methyl ethyl ketone at a concentration of 10 parts was applied onto the zinc sulfide onto the uneven surface by moving a #8 bar coater intermittently about 3 cm, and dried at 150°C. The obtained laminated polyethylene terephthalate film exhibited a beautiful transparent iris pattern with a bluish gravure roll horizontal pattern.

However, when a transparent adhesive tape was attached to the nitrocellulose-coated side of this film, the iris pattern disappeared.

Furthermore, zinc sulfide was deposited again on the nitrocellulose coating on one side of the iris-patterned film in a vacuum of 5.times.10@-2 Pascals using a Pelger type evaporation percentage of 781 to obtain a 500-sized thin film. When a transparent adhesive tape was attached to the vapor-deposited side of this film, this beautiful transparent iris pattern did not disappear. After applying adhesive on the vapor-deposited surface of this iris transfer foil and drying it,
When transferred to a transparent acrylic board, it became a transparent and beautiful iris-patterned acrylic board.

[Example 2] A 5% solution of cellulose acetate in acetone was coated on one side of a biaxially stretched polyethylene terephthalate film with a thickness of 18 μm and a width of 1 m using a gravure coating method, and dried at 120° C. to form a film with a thickness of about 0.2 μm. A mold layer was formed. A solution consisting of 17 parts of acrylic resin, 3 parts of melamine resin, 20 parts of methyl ethyl ketone, 20 parts of ethyl acetate, and 40 parts of toluene was applied onto this mold release layer by a gravure coating method and dried at 160°C. A protective resin layer (refractive index 1.55) with a thickness of 2 μm was obtained. On this protective resin layer, the following paint A (refractive index: 1.
70) was applied using a gravure coating method and dried at 150°C to obtain a 400-diameter thin film.

Coating A Niacetylacetone 162 (+!, :l') & Under stirring, 32.2 g of tetra-n-butyl titanate, 10 g of methanol-dispersed colloidal Silino J, and 0.119 g of silicone surfactant were added and mixed.

Nitrocellulose (refractive index 1.51>
9.5 parts of epoxy resin (10% solution of methyl ethyl ketone with a refractive index of 1.55>0.5 parts) was coated using a gravure coating method and dried at 150°C to obtain an uneven film with a size of 200 to 2000. The laminated polyethylene terephthalate film exhibited a beautiful transparent iris pattern with colors ranging from blue to red.

Then, paint A was again applied by gravure coating over the nitrocellulose epoxy coating on one side of the iris-patterned film to obtain a 400-diameter thin film. The result is a transparent and beautiful iris transfer foil. Furthermore, after applying an adhesive onto a synthetic leather having a thickness of 200 μm and drying it, the coating surface of the iris transfer foil and the adhesive layer were pressed and transferred, and a beautiful iris pattern was developed on the synthetic leather fabric.

[Effect of the invention] The iris transfer foil of the present invention is a transfer foil in which a protective resin layer and an iris thin film layer are provided on a sheet base material directly or through a release layer, and the iris film layer is transparent. The iris transfer foil is characterized by being laminated with a transparent thin film layer (A) having a refractive index difference of 0.05 or more from the thin film layer (A) and an uneven transparent thin film layer (B). .

In order to
) provides transfer foil with a colorful and beautiful iris pattern. The iris transfer foil according to the present invention takes advantage of its beautiful appearance characteristics and transfer functionality to be used in threads, packaging materials, wallpaper, posters, labels, women's clothing and belts, lures, fishing hooks, golf shafts, fishing rods, buttons, earrings, etc. Used for pendants, etc.

By adjusting the thickness of the uneven transparent 1111 layer (8), it is possible to mass produce an iris transfer foil having an iris pattern of any design.

C. A transparent iris molded product is provided by using a transparent body for the molded product to be transferred.

2. By transferring the iris pattern, the iris pattern can be easily applied to the surface of molded products in a wide range of fields.

By changing the shape to be transferred, it is easy to create a beautiful iris pattern that combines the iris pattern and the shape to be transferred.

[Brief explanation of drawings]

1 to 6 are enlarged cross-sectional views showing examples of the iris transfer foil according to the present invention. The lamination order of the thin films is as follows: Figures 1 to 3 represent A/B/A, A/B, and B/A, respectively, and Figures 4 to 6 are stacked on top of those shown in Figures 1 to 3. This shows a product with an adhesive layer. DESCRIPTION OF SYMBOLS 1... Sheet base material, 2... Release layer, 3... Protective resin layer, 4... Iris thin film layer, 5... Adhesive layer, A...
Transparent thin film layer, B... Transparent thin film layer with unevenness Patent applicant Toyo Metallizing Co., Ltd. Agent
Person Noboru Omura No. 40 Figure 2 Figure 3 Figure No. 5

Claims (12)

[Claims] (1) In a transfer foil in which a protective resin layer and an iris thin film layer are provided on a sheet base material directly or via a release layer, the iris thin film layer comprises a transparent thin film layer (A) and a transparent thin film layer (A); An iris transfer foil comprising: (A) and (B) a transparent thin film layer having an uneven refractive index difference of 0.05 or more. (2) The thickness of the transparent thin film layer (A) is 50 to 2000 Å,
The thickness of the transparent thin film layer (B) with unevenness is 100 to 100
00 Å iris transfer foil according to claim 1. (3) The iris transfer foil according to claim 1, wherein the transparent thin film layer (A) is made of one or more different metal compounds. (4) The iris transfer foil according to claim 1, wherein the transparent thin film layer (A) is made of a polymeric material having fine bubbles inside. (5) The iris transfer foil according to claim 1, wherein the transparent thin film layer (A) is an organic polymer thin film containing an organic polymer material and inorganic fine particles. (6) The iris transfer foil according to claim 1, wherein the transparent thin film layer (A) is made of an inorganic material capable of forming a liquid film and a mixture of the inorganic material and an organic material. (7) The iris transfer foil according to claim 1, wherein the transparent thin film layer (A) and the uneven transparent thin film layer (B) are a laminate of two or more layers of different materials. (8) The iris transfer foil according to claim 1, wherein the uneven transparent thin film layer (B) is made of one or more different resins. (9) The iris transfer foil according to claim 1, wherein the uneven transparent thin film layer (B) is made of a polymeric material having fine air bubbles inside. (10) The iris transfer foil according to claim 1, wherein the uneven transparent thin film layer (B) is an organic polymer thin film containing an organic polymer material and inorganic fine particles. (11) The iris transfer foil according to claim 1, wherein the uneven transparent thin film layer (B) is made of an inorganic material capable of forming a liquid film and a mixture of the inorganic material and an organic material. (12) The transparent thin film layer (A) and the uneven transparent thin film layer (B) are laminated in the order of A/B/A, A/B, and B/A according to claim 1. Iris transfer foil.