JPS60157855A - Iris foil and iris powder - 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 More specifically, the present invention relates to an iris foil comprising an interference resin coating film and a metal vapor deposited film, and an iris powder obtained by crushing the foil. Traditionally, it has been used for high-quality decoration of Buddhist altars, Buddhist utensils, sliding doors, lacquerware, pottery, fans, picture frames, marks, books, etc., or for decoration of packaging for confectionery, dairy products, other foods, medicines, cosmetics, cigarettes, etc. Furthermore, stamped foil (gold leaf, silver leaf) is used in the production of artificial flowers and the like using an ancient Japanese manufacturing method, but these have the disadvantage that the color tones are limited to those unique to the metal, and they also A metal vapor deposited foil consisting of a vapor deposited film and a resin coating film provided on one or both sides of the metal vapor deposited film, and a metal vapor deposited film obtained by crushing this metal vapor deposited foil are used. Although there was an advantage that it was possible to obtain colored products in various colors by transparently coloring them, it has not been possible to obtain products with iridescent luster such as pearlescent or iridescent.

However, as a result of various studies, the present inventors discovered a completely new fact that iris foils and iris powders with bright luster can be obtained by combining interference resin coatings and metal vapor deposition films. The invention was completed.

That is, the present invention provides an iris foil having iris luster and at least an interference resin coating, comprising at least an interference resin coating A and a metal vapor deposited film B, which are layered in the order of A/B. To provide an iris powder having an iris luster characterized by being composed of crushed pieces of an iris foil formed by laminating a metal vapor-deposited film B in the order of A/B.

The iris foil and iris powder of the present invention have two embodiments: one in which an interference resin coating film A is provided on one side of a metal heat film B, and one in which an interference resin coating film A is provided on both sides of a metal vapor deposited 1 MB film. included.

Is vapor deposition true in this specification? It means forming a thin film of metal by the usual metal (including alloys, the same shall apply hereinafter) method of forming a /4g film of metals such as vapor deposition method, sputtering method, and ion blating method. This includes all metal thin films formed by thin film forming methods.

In the present invention, the metal vapor deposited film B is usually selected from the range of 1 to 10 On1μ, preferably from the range of 5 to 601 nμ, more preferably from the range of 5 to 30 inμ.

If the thickness of the metal vapor deposited film is less than 1 mμ, the light reflectivity of the metal vapor deposited film is poor, and sufficient iris gloss cannot be obtained, which is not preferable. On the other hand, even if it exceeds 100 mμ, the light reflectivity of the metal vapor-deposited film does not change, so it is undesirable from the viewpoint of redness and not related to iris gloss. Not only that, but the thinner the iris is than 100 mμ, the more vivid the iris color will be.

Examples of metals used to form the metal vapor deposition film B include aluminum, copper, gold, silver, platinum, chromium, indium, zinc, tin, nickel, and titanium.
Ci aluminum is usually preferably used from the viewpoint of light reflectance and economy.

In the iris foil of the present invention, the thickness of the interference resin coating A is usually in the range of 0.06 to 1μ, more preferably 0, θ6 to 0.
Selected from the range of 57z. The thickness of interference resin coating A is 0
．． If it is less than 0.06μ, iris gloss cannot be obtained, which is not preferable. On the other hand, if it exceeds 1μ, the iris luster will be poor, and in addition, the iris foil will become rigid as a whole, lacking the soft and smooth texture characteristic of conventional gold and silver foil (stamped foil), and will become a plate-like foil, so that fine irregularities can be avoided. (b) This is not preferable because the adhesion to objects to be decorated, such as Buddhist altar fittings, becomes poor.

Any of thermoplastic resins, thermosetting resins, electron beam curable resins, and ultraviolet curable resins can be used as resins for forming such interference resin coatings, such as acrylic resins, vinyl chloride-vinyl acetate, etc. Copolymer, polyvinyl butyral, polycarbonate, nitrocellulose, cellulose acetate-1, urethane resin, urea resin, melamine resin, urea-melamine resin, epoxy plum fat, alkyd resin, aminoalkyd resin, Rosin-modified maleic acid resins and the like are preferably used alone or in blends.

The interference resin coating film A is formed by applying an organic solvent solution, aqueous solution, etc. of the resin for forming the interference resin coating film 8 by a normal coating method such as a roll coating method, a gravure coating method, a reverse coating method, a spray coating method, etc. This is done by coating and drying (curing in the case of thermosetting resins, electron beam curing resins, and ultraviolet curing resins). In the iris foil of the present invention, the metal vapor deposited film B itself constituting the iris foil has low mechanical strength and is easily damaged by friction, so even if a protective resin coating is provided on the surface of the metal vapor deposited film B. good. The thickness of the protective resin coating is not particularly limited, but is usually appropriately selected from a range of about 0.6 to 2 .mu.m.

As the resin for forming such a protective resin coating, for example, those used in the interference resin coating A are preferably used, and the resin forming the interference resin coating A and the resin forming the protective resin coating are preferably used. It may be the same or different.

The interference resin coating A and the protective resin coating may be colored with colorants such as dyes or pigments as long as they are transparent or translucent. Further, the protective resin coating formed on the surface of the metal vapor deposited film B may be opaque.

The iris foil of the present invention can be coated on a support with a protective resin coating (
An undercoat F4) is provided, and an interference resin coating A and a metal vapor deposition film B are formed thereon to form an iris foil in which at least these are closely laminated in the order of A/B, that is, (1) interference resin coating A. , whether metal vapor deposition film B is provided on this l11 (i) or (2)
Either the metal vapor deposition film I3 and the interference resin coating film A are provided in this order, or
Up to (3) Interference resin coating A, metal vapor deposition film B, and interference resin coating A are provided in this order to form an iris foil, and if necessary, a protective resin coating ← 1-coating) is further provided. , then Aya Kanshi! It can be easily obtained by peeling A (or an integral structure of this and a protective resin coating) from the support.

Any support can be used as long as it has sufficient self-retention properties and a smooth surface, such as polyester, polyamide, polyamideimide, polyethylene, polypropylene, cellulose acetate, polycarbonate-1, polychloride, etc. Films or sheets of resins such as vinyl and fluorocarbon resins or cellophane, films or sheets of stainless steel or other metals, glass plates, etc. are used as appropriate.

Various methods can be employed to peel off the iris foil (or the integral structure of the foil and the protective resin coating) from the support.

For example, there is a method in which an iris foil is provided on a support directly or via a release layer, and then this is mechanically removed. Mechanical peeling can be carried out, for example, by scratching the iris foil on the support, or by stretching or bending the laminate of the support and the iris foil.

This is carried out by applying vibration to the laminate to make it easier to peel off, and then suctioning the laminate using a vacuum suction machine or the like through paper or the like. In particular, a film-like material of the above-mentioned resins with a thickness of about 6-10071 is used as a support, and (the method of peeling off by stretching a single-layer material is used) This is preferred from the standpoint of continuous mass production.If the support does not have good peelability from the iris foil, the surface of the support may be treated with silicone resin, wax, surfactant, metal oxide, fluororesin, etc. You can leave it as is.

Further, a resin film soluble in water or an organic solvent is provided on the support, an iris foil (or an integral structure of this and a protective resin film) is provided on the support, and then the waste is removed in water or an organic solvent. One method is to peel the iris foil from the support by dipping it in an organic solvent to dissolve the resin coating.In this case, the resin coating is dissolved in the support, the interference resin coating A, and the protective resin coating. Resins that are not attacked by water or organic solvents used for coating are used.Resins for the resin coating include, for example, polyvinyl alcohol, polyvinyl butyral, gelatin, casein, methyl cellulose, cochyl cellulose, hydroxyethyl cellulose, carboxymethyl cellulose, and polyvinyl methyl. Individual resins soluble in water or organic solvents such as ether, starch, polyvinyl acetate, polyvinyl chloride, nitrocellulose, cellulose acetate, vinyl acetate-vinyl chloride copolymer, acrylic resin, polyamide resin, polyester resin, etc. or a blend.The thickness of the resin coating is usually appropriately selected from the range of 0.1 to 2 .mu.m.

Iris powder is obtained by crushing the iris foil of the present invention,
This product can be used for the purposes for which gold and silver powders were conventionally used. This iris powder has a pearlescent or iridescent iris luster compared to the monotonous color of conventional gold and silver powders, and is extremely decorative, so it can be used for all kinds of purposes like conventional gold and silver powders. used.

■ As an iris-colored pigment for paints. Paints include not only general paints, but also vehicle paints, display paints, glass and plastic paints, textile printing paints, heat ray reflective paints, decorative thread paints, water wicking paints, etc. .

■ As an iris-colored pigment in printing ink. Printing inks include regular printing inks, baka gravure printing inks, offset printing inks, etc.

■ As an iris pigment in writing ink. Writing inks include ballpoint pen ink, signboard ink, fountain pen ink, lettering ink, and brush ink.

■ As an iridescent pigment for paints. Includes watercolor paints and oil paints.

■ As an iridescent pigment for isomorphic paintings. The solid painting medium H includes crayons, basses, colored pencil leads, chalk, chalk, and the like.

■ As an iris color pigment for makeup cosmetics. Makeup cosmetics include eye shadow, hair crayon, foundation, powder powder, lipstick, nail polish, hair spray, lotion, hair lotion, hair oil, etc.

■ As an iris-colored pigment for powder coating paints.

0 Dust [as an iris color pigment for formula printing.

■ As an iridescent pigment for coloring plastic molded products.

dΦ As conductive iris powder. Conductive iris powder can be used as an antistatic agent in plastics, rubber, etc.
Alternatively, it is used as a conductive dye or adhesive in the electronic industry as electrical shields, radio frequency interference shields, conductors for printed circuits, resistors, etc.

The preferred range of the particle size of the iris powder differs depending on the use, but for the above-mentioned uses ① to Oφ, the average particle size is normally selected as appropriate in the range of about 0.2 to 500 μm.

The thickness of the iris powder (corresponding to the thickness of the iris foil) also varies depending on the application, but the thickness of the iris foil is usually selected as appropriate from a range of about 0.1 to 2 μm.

In the case of the iris powder used for the above uses ① to ②, it can be used with or without a protective resin coating, but depending on the use (φ) In this case, a product without a protective resin coating is usually used.In the case of iris powder used for conductive paint or adhesive, a product with a resin coating that can be dissolved in the vehicle of the paint or adhesive is used. Table 1 shows the approximate average particle size, thickness, and presence/absence of a protective resin coating of the iris powder for each use.

The iris powder can be easily obtained by pulverizing the iris powder of the present invention, and there are no particular restrictions on the pulverizing method. For example, mechanical pulverization using a hammer mill, ball mill, kneader, etc., freeze pulverization, manual pulverization Any method such as kneading may be used.

Next, the present invention will be explained with reference to Examples.

Example 1 A 40% (wt%) solution of epoxy resin (using a mixed solvent of methyl ethyl ketone, ethyl acetate, toluene) and a 40% solution of isocyanate (methyl ethyl ketone, ethyl acetate, toluene, ethyl acetate (using mixed solvent) and l
Apply the paint mixed in the ratio of :l. After drying, the thickness is about 1.
An epoxy resin coating film (base coating film) was formed. Then, aluminum evaporation film B was formed by applying aluminum lamura to a thickness of about 30 mμ on the epoxy resin coating film by vacuum evaporation method. A toluene solution of methyl methacrylate was then applied onto the aluminum vapor deposited film and dried to form a methyl methacrylate resin coating A having a thickness of about 0.4 μm (solid content).

Next, this laminate is applied to a suction peeling machine to peel it off at the interface between the polypropylene film and the epoxy resin coating.
One side consisting of a boxy resin coating film, an aluminum vapor deposited film B, and a methyl methacrylate resin coating film A has an iris luster,
The other side is covered with silver luster! l! I got a colored leaf.

Example 2 On a polypropylene film in the same manner as in Example 1,
Methyl methacrylate resin coating A with a thickness of about 0.07μ, aluminum vapor deposited film B with a thickness of about 10μ and a thickness of about 0.0μ
A 7u methyl methacrylate resin coating film A was formed in this order.

Next, this laminate is applied to a suction peeler to peel off the polypropylene film and the methyl methacrylate resin coating at the interface, and the 4 methyl methacrylate resin films A, the aluminum vapor deposited film B, and the methyl methacrylate resin coating are separated. The iris foil was changed to have an iris gloss of 41 on both sides consisting of the film A.

Example 3 The iris foils obtained in Examples 1 and 2 were each pulverized using a jet pulverizer, and iris powders having an average particle size within the range shown in Table 2 could be obtained.

Table 2 A mixture of 5 gt of iris powder (average particle size 20μ, thickness approximately 0.15μ) obtained from the iris foil of Example 2 and 20 parts of polyamide resin was added to a mixed solvent of isopropyl alcohol, toluene, and ethyl alcohol. Adjust the paint by mixing and dispersing it, apply it to the plastic ball, dry it and make it 2 thick
A coating film of 0μ was obtained.

The resulting paint film had a beautiful iris luster and looked like a pearl. Patent applicant: Oike Kogyo Co., Ltd.

Claims (6)

[Claims] (1) An iris foil having iris luster, comprising at least an interference resin coating A and a metal vapor deposition film B, which are laminated closely in the order of A/H. (2) The iris foil according to claim 1, wherein the interference resin coating A and the metal vapor deposition film B are closely laminated in the order of A/B/A. (3) The iris foil according to claim 1 or 2, wherein the interference resin coating has a diameter of 1 in the range of 0.06 to 1 μ. (4) An iris powder having iris luster, characterized in that it is composed of crushed pieces of iris foil, which is composed of at least an interference resin coating A and a metal vapor deposition film B, which are adhered in the order of A/B (α layer). (5) The iris powder according to claim 4, wherein the interference resin coating A and the metal vapor deposition film B are closely laminated in the order of A/B/A. (6) The iris powder according to claim 4 or 5, wherein the interference resin coating A has a thickness in the range of 0.06 to 1 μm.