JPH03184840A - Luster material - Google Patents

Abstract

PURPOSE:To enhance both change in a luster layer and rainbow-colored luster by laminating a metallic thin film layer, the luster layer of bismuth oxide and a transparent top coat resin layer in this order directly or via an under coat resin layer on single face or both faces of a plastic film. CONSTITUTION:An under coat resin layer 2, a metallic thin film layer 3, a luster layer 4 of bithmus oxide and a transparent top coat resin layer 5 are successively laminated on a plastic film 1. As resin utilized for the under coat resin layer 2, any of thermoplastic resin, thermosetting resin, electron beam setting resin and ultraviolet ray setting resin is utilized. As metal utilized for the metallic thin film layer 3, any of aluminum, copper, gold, silver and plati num, etc., is utilized. As formation of the luster layer 4 of bithmus oxide, for example, a method is utilized wherein fine bithmus oxide powder is directly rubbed to form the luster layer of bithmus oxide. As resin utilized for the trans parent top coat resin layer 5, any of thermoplastic resin, thermosetting resin, electron beam setting resin and ultraviolet ray setting resin is utilized. Thereby excellent effect is obtained in brightening property and luster hue shown in the luster material.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to iris materials. More specifically, the present invention relates to an iris material that is excellent in glitter and iris color development.

[Prior Art] Conventionally, as an iris material, a film-like material such as a polyester film exhibiting a glittering iris color, or a gold and silver thread obtained by slitting this film-like material is known.

For example, as shown in (a) JP-A No. 61-3743, a transparent thin film layer of metal oxide such as titanium oxide, silicon oxide, zinc oxide, zirconium oxide, etc. is laminated on a film, and then an acrylic resin, An iris material in which a non-uniform transparent resin with irregularities made of nitrocellulose or the like is laminated, and (1') iris material as shown in (→ JP-A-61-227098), a film and metal oxide There are iris materials in which a resin such as polyester resin or acrylic resin or a metal layer such as aluminium or nickel is provided as an undercoat layer between the two layers.

[Problems to be Solved by the Invention] However, the above conventional iris materials have the following problems.

In other words, there were problems such as the iris color being monotonous and the iris gloss being poor.

The present invention has been made in view of the above-mentioned conventional problems, that is, it is an object of the present invention to provide an iris material that solves the problems such as the iris color being monotonous and the iris gloss being poor.

[Means for Solving the Problems] The iris material of the present invention has a metal thin film layer, a bismuth oxide iris layer, and a transparent top coat resin layer formed on one or both sides of a plastic film directly or via an undercoat resin layer in this order. It is characterized by being laminated.

[Function 1] The bismuth oxide iris layer has the effect that its forming ability is not limited, and the iris color exhibited is more varied than other iris layers, and the iris has an extremely excellent gloss and is beautiful.

[Example] Next, the iris material of the present invention will be explained based on the drawings.

FIG. 1 is a schematic partial cross-sectional view showing an embodiment of the iris material of the present invention. In FIG. 1, (1) is a plastic film (1), on which are successively laminated a metal thin film layer (3), a bismuth oxide iris layer (4), and a transparent top coat resin layer (5).

FIG. 2 is a schematic partial cross-sectional view showing another embodiment of the iris material of the present invention. In Figure 2, (1) is a plastic film (1), on which is an undercoat resin layer (2).
, a metal thin film layer (3), a bismuth oxide iris layer (4), and a transparent top coat resin layer (2) are sequentially laminated.

FIG. 3 is a schematic partial cross-sectional view showing still another embodiment of the iris material of the present invention. In Figure 3, (1) is a plastic film (1), on both sides of which are an undercoat resin layer (2), a metal thin film layer (3), and a bismuth oxide iris layer (2).
) and a transparent top resin layer (■) are sequentially laminated.

FIG. 4 is a schematic partial cross-sectional view showing still another embodiment of the iris material of the present invention. In FIG. 4, two pieces of the iris material shown in FIG. 1 are pasted together with the plastic film (1) side inside through an adhesive layer (0).

Plastic film (1) used in the iris material of the present invention
For example, polyesters such as polyethylene terephthalate and polybutylene terephthalate,
Polyolefins such as polyethylene and polypropylene, polyamides such as nylon 6, nylon 66, and nylon 12, celluloses such as nitrocellulose and cellulose acetate, polyvinyl alcohol, polytrifluoroethylene, polycarbonate, and polymethyl methacrylate. , polyimide, polyvinyl chloride,
Examples include synthetic resin films such as polyvinylidene chloride, which may be a single layer or two or more films bonded together.

The thickness of the plastic film is not particularly limited, but is preferably in the range of 6 to 25 gm. If the thickness is less than 61 Lm, the strength is too low to be practical when made into a thread, while if the thickness exceeds 251 Lm, the thread lacks flexibility and is not practical.

As the resin used for the undercoat resin layer (2) used in the iris material of the present invention, any of thermoplastic resins, thermosetting resins, electron beam curable resins, and ultraviolet curable resins can be used, such as acrylic resins and styrene resins. resin, acrylic-styrene copolymer, vinyl chloride resin, vinyl acetate resin, vinyl chloride-vinyl acetate copolymer, polyvinyl butyral, polycarbonate, nitrocellulose, cellulose acetate, urethane resin, urea resin, melamine resin Resins such as urea-melamine resins, epoxy resins, alkyd resins, aminoalkyd resins, and rosin-modified maleic acid resins may be used alone or in combination.

The undercoat resin layer (2) can be formed by a well-known general method such as roll coating, spray coating, dip coating, or gravure coating.

The thickness is not particularly limited, but is usually in the range of about 0.1 to 5 gm, more preferably 0.5 to 3 gm.
Selected from the range of yLm. If the thickness is less than 0 or IILm, the plastic film cannot be completely covered, and the undercoat effect such as improvement of vapor deposition suitability and gloss imparting cannot be sufficiently exhibited, and there is no value in forming the undercoat resin layer.
If the length exceeds 71 m, the undercoat resin layer will be too thick and the texture will be impaired, and the drying speed will be slow, resulting in inefficiency. Note that the thickness of the undercoat resin layer does not necessarily have to be uniform.

Examples of metals used in the metal thin film layer (3) used in the iris material of the present invention include aluminum, copper, gold, silver, platinum,
Zinc, tin, lead, nickel, nickel-chromium, titanium,
Metals such as molybdenum, cobalt, bismuth, chromium, indium, gallium, tantalum, and silicon are used alone or in combination, and aluminium is usually preferred from the viewpoint of light reflectance and economy.

The metal thin film layer (3) is formed by a well-known general method such as a vacuum deposition method, a sputtering method, an ion-blating method, and other methods for forming a thin film of ordinary metals (including alloys and compounds, the same shall apply hereinafter). can be done.

In the present invention, the metal vapor deposited film is usually selected from a range of 20 to 1100 nm, preferably from a range of 30 to 60 nm. If the thickness of the metal vapor deposited film is less than 20 nm, the light reflectivity of the metal vapor deposited film will not be sufficient, and sufficient metallic luster will not be obtained, which is not preferable. On the other hand, even if it exceeds 1100 nm, the light reflectivity of the metal vapor-deposited film does not change, so it has no effect on the metallic luster.Therefore, it does not affect the brilliance and iris coloration of the resulting iris material, and is also unfavorable from an economic point of view.

The bismuth oxide iris layer (a) can be formed by directly rubbing fine bismuth oxide powder to form a bismuth oxide iris layer, or by spraying a solution of bismuth chloride in anhydrous methanol, ether, etc. After that, there are methods to form a bismuth oxide iris layer by hydrolyzing this, reactive vapor deposition of bismuth metal in an oxygen atmosphere, vacuum vapor deposition method, sputtering method, etc. of bismuth oxide.
Ordinary metals and alloys such as ion blating method.

This can be carried out by a well-known general method such as a compound thin film forming force method.

In the present invention, the average thickness of the bismuth oxide iris layer is usually in the range of 2 nm to 300 nm, preferably 30 to 200 nm.
selected from the nm range. Even if the average thickness of the bismuth oxide iris layer is less than 2 nm or more than 300 nm, it is not preferable because the iris effect cannot be sufficiently exhibited. Note that the thickness of the bismuth oxide iris layer does not necessarily have to be uniform.

The resin used for the transparent top resin layer■ is thermoplastic resin,
Thermosetting resins, electron beam curable resins, and ultraviolet curable resins are all used, such as acrylic resins, styrene resins, acrylic-styrene copolymers, vinyl chloride resins, vinyl acetate resins, and vinyl chloride. -Vinyl acetate copolymer, polyvinyl butyral, polycarbonate, nitrocellulose, cellulose acetate, urethane resin, urea resin, melamine resin, urea-melamine resin, epoxy resin, alkyd resin, aminoalkyd resin, rosin Resins such as modified maleic acid resins may be used alone or in combination.

The transparent top resin layer (5) can be formed by a well-known general method such as roll coating, spray coating, dip coating, or gravure coating.

Further, in the iris material of the present invention, the thickness of the transparent top resin layer is usually 0. O1-5pm range, more preferably 0.0
It is selected from the range of 2 to 3 gm.

The thickness of the transparent top coat resin layer is 0. OIILm less than and 5J
Lm is not preferred because it does not have a synergistic effect with the bismuth oxide iris layer and does not provide exceptional iris luster. Furthermore, if it exceeds 5 gm, the iris material becomes rigid as a whole, and when it is slitted into gold and silver thread, it lacks weavability and texture, which is not preferable. The thickness of the transparent top coat resin layer may be uniform, but it is preferable to have a non-uniform thickness, since the iris coloring of the layer will be more varied. When the thickness of the transparent top coat resin layer is non-uniform, the degree of non-uniform thickness (difference between thick and thin transparent top coat resin layers) is approximately 0.1=IILm. is preferable. If the difference is less than 0-1p, m, the coloring of the iris will change little due to the non-uniformity of the transparent top coat resin layer, and the coloring will be monotonous, which is undesirable.If the difference exceeds Ig,m, the coloring will be pale. I don't like it.

Note that the transparent top coat resin layer may be colored with a dye and/or a pigment as appropriate.

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

Example 1 Aluminum was deposited on one side of a polyethylene terephthalate film with a thickness of 121 parts m using the EB heating evaporation method to form an aluminum thin film layer with a thickness of 50 parts m, and bismuth oxide was deposited on top of the aluminum thin film layer using the EB heating evaporation method. evaporated to a thickness of 5
A bismuth oxide iris layer of 0 parts m is formed, and a transparent resin coating consisting of 50 parts of acrylic resin, 5 parts of isocyanate resin, 50 parts of toluene, 30 parts of xylene, and 20 parts of n-butyl alcohol is applied thereon using a gravure coater. The iris material of the present invention forms a transparent overcoat resin layer with an average thickness of 0.2p to 0.2m to compensate for uneven thickness when dried, and exhibits silver on one side and beautiful glitter and iris color on the other side. I got it.

1 The obtained iris material was microslit into 120 pieces (0.252 mm width) to obtain single-sided iris gold and silver threads.

Example 2 A transparent resin coating consisting of 100 parts of acrylic resin, 5 parts of isocyanate resin, 50 parts of toluene, 30 parts of xylene, and 20 parts of n-butyl alcohol was applied to one side of a 12 gm thick polyethylene terephthalate film using a gravure coater and dried. to form an undercoat resin layer having a non-uniform thickness with an average thickness of IILm, and on top of that, an aluminum E
A thin aluminum film layer with a thickness of 50 parts m is formed by vapor deposition using the B heating evaporation method, and a bismuth oxide iris layer having a thickness of 50 parts m is formed on top of this by vapor deposition using the EB heating evaporation method. A transparent resin coating consisting of 50 parts of acrylic resin, 5 parts of isocyanate resin, 50 parts of toluene, 30 parts of xylene, and 20 parts of n-butyl alcohol was applied thereon using a gravure coater and dried to an average thickness of 0.21. The iris material of the present invention was obtained by forming a transparent top resin layer having a non-uniform thickness in a portion m, and exhibiting silver color on one side and beautiful glitter and iris color on the other 2 sides.

The obtained iris material was microslit into 120 pieces (0.252 mm width) to obtain single-sided iris gold and silver threads.

Example 3 100 parts of acrylic resin and 5 parts of isocyanate resin were applied to both sides of a polyethylene terephthalate film having a thickness of 12 ILm.
A transparent resin coating consisting of 50 parts of toluene, 30 parts of xylene, and 20 parts of n-butyl alcohol was applied using a gravure coater and dried to form an undercoat resin layer having a non-uniform thickness with an average thickness of lpm. Aluminum E on top
A thin aluminum film layer having a thickness of 50 parts m is formed by vapor deposition using the B heating evaporation method, and bismuth oxide is vapor deposited thereon using the EB heating evaporation method to form a bismuth oxide iris layer having a thickness of 50 parts m. A transparent resin coating consisting of 50 parts of acrylic resin, 5 parts of isocyanate resin, 50 parts of toluene, 30 parts of xylene, and 20 parts of n-butyl alcohol was applied thereon using a gravure coater and dried to an average thickness of 0.27 parts m. An iris material of the present invention having beautiful glitter and iris color on both sides was obtained by forming a transparent top resin layer having a non-uniform thickness of .

The obtained iris material was microslit into 120 pieces (0.252 mm width) to obtain double-sided iris gold and silver threads.

Example 4 Aluminum was deposited on one side of a polyethylene terephthalate film with a thickness of 12 ILm using an EB heating evaporation method to form an aluminum thin film layer with a thickness of 50 parts m, and bismuth oxide was deposited on top of the aluminum thin film layer using an EB heating evaporation method. and thickness 5
A bismuth oxide iris layer of 0 parts m is formed, and a transparent resin coating consisting of 50 parts of acrylic resin, 5 parts of isocyanate resin, 50 parts of toluene, 30 parts of xylene, and 20 parts of n-butyl alcohol is applied thereon using a gravure coater. After drying, a transparent top coat resin layer having a non-uniform thickness with an average thickness of 0.2 gm was formed to obtain an iris film-like material having one side silvery and the other side exhibiting beautiful glitter and iris color.

Two pieces of the obtained film-like material were coated with a urethane resin adhesive with the polyethylene terephthalate film side inside, dried, and then bonded together via an adhesive layer with a thickness of 2 gm.
An iris material of the present invention was obtained in which both sides of the ply structure exhibit beautiful glitter and iris color.

The obtained iris material was microslit into 120 pieces (0.252 mm width) to obtain double-sided iris gold and silver threads.

Comparative Example 1 Aluminum was deposited on one side of a polyethylene terephthalate film with a thickness of 12 JLm using an EB heating evaporation method to form a 50 mm thick aluminium thin film layer, and zinc sulfide was deposited on top of that using an EB heating evaporation method. and thickness 150
mm of zinc sulfide iris layer was formed, and then a transparent resin coating consisting of 50 parts of acrylic resin, 5 parts of isocyanate resin, 50 parts of toluene, 30 parts of xylene, and 20 parts of n-butyl alcohol was applied and dried using a gravure coater. 5 A transparent overcoat resin layer having a non-uniform thickness with an average thickness of 0.2 JLm was formed to obtain a prior art iris material having a silver color on one side and an iris color on the other side.

The obtained iris material was microslit into 120 pieces (width 0.252 mm) to obtain a single-sided iris gold and silver thread according to the prior art.

Comparative Example 2 A transparent resin coating consisting of 100 parts of acrylic resin, 5 parts of isocyanate resin, 50 parts of toluene, 30 parts of xylene, and 20 parts of n-butyl alcohol was applied to one side of a 12 gm thick polyethylene terephthalate film using a gravure coater and dried. to form a base coat resin layer with a non-uniform thickness of average thickness lpm, and then aluminum is coated with EB on top of it.
A 50 mm thick aluminium thin film layer was formed by vapor deposition using a heating evaporation method, and on top of that a 150 mm thick zinc sulfide iris layer was formed by vapor depositing zinc sulfide using an EB heating evaporation method. A transparent resin coating consisting of 50 parts of acrylic resin, 5 parts of isocyanate resin, 50 parts of toluene, 30 parts of xylene, and 20 parts of n-butyl alcohol was applied to the surface using a gravure coater and dried to form a non-uniform coating with an average thickness of 0.2 pm. A prior art iris material having a silver color on one side and an iris color on the other side was obtained by forming a thick transparent top resin layer.

The obtained iris material was microslit into 120 pieces (width 0.252 mm) to obtain a single-sided iris gold and silver thread according to the prior art.

Comparative Example 3 100 parts of acrylic resin and 5 parts of isocyanate resin were applied to both sides of a polyethylene terephthalate film having a thickness of 12 ILm.
A transparent resin coating consisting of 50 parts of toluene, 30 parts of xylene, and 20 parts of n-butyl alcohol was applied using a gravure coater and dried to form an undercoat resin layer having a non-uniform thickness with an average thickness of 14 m. Aluminum on top
B heating evaporation method to form a 50 mm thick aluminum thin film layer, EB heating evaporation method to deposit zinc sulfide iris layer 150 mm thick, and on top of that a 150 mm thick zinc sulfide iris layer. 50 parts of acrylic resin, 5 parts of isocyanate resin
A transparent resin coating consisting of 50 parts of toluene, 30 parts of xylene, and 20 parts of n-butyl alcohol was applied and dried using a gravure coater to obtain a transparent top coat resin layer having a non-uniform thickness with an average thickness of 0.2 parts m. was formed to obtain a prior art iris material exhibiting iris color on both sides.

The obtained iris material was microslit into 120 pieces (width 0.252 mm) to obtain a double-sided iris gold and silver thread according to the prior art.

Comparative Example 4 Aluminum was deposited on one side of a polyethylene terephthalate film with a thickness of 12 ILm using an EB heating evaporation method to form an aluminum thin film layer with a thickness of 50 mm, and zinc sulfide was deposited thereon using an EB heating evaporation method. Thickness: 15
A 0 mm zinc sulfide iris layer was formed, and a transparent resin coating consisting of 50 parts of acrylic resin, 5 parts of isocyanate resin, 50 parts of toluene, 30 parts of xylene, and 20 parts of n-butyl alcohol was applied on it using a gravure coater and dried. A transparent top coat resin layer having a non-uniform thickness with an average thickness of 0.2 gm was formed to obtain a film having a silver color on one side and an iridescent color on the other side.

Two of the obtained film-like materials are coated with a urethane resin adhesive with the polyethylene terephthalate film side facing inside, dried, and pasted together via an adhesive layer with a thickness of 2ILm, so that both sides of the 2-ply structure exhibit an iris color. A prior art iris material was obtained.

The obtained iris material was microslit into 120 pieces (0.252, mm@) to obtain a double-sided iris gold and silver thread according to the prior art.

As a result of visually comparing the brightness and iris color of the obtained iris materials, it was found that the iris materials of the present invention of Examples 1 to 4 had better iris color development than those of Comparative Examples 1 to 4. It was also extremely excellent in brightness.

[Effects of the Invention] As is clear from Examples 1 to 4 and Comparative Examples 1 to 4, the iris material of the present invention has the following properties by forming a metal thin film layer, a bismuth oxide iris layer, and a transparent top coat resin layer on a plastic film. It has an extremely effective effect on the brightness and iris color.

9

[Brief explanation of drawings]

FIG. 1 is a schematic partial sectional view showing the basic structure of the iris material of the present invention. 2 to 4 are schematic partial cross-sectional views showing the structure of other embodiments of the iris material of the present invention. (Drawing codes) (1) Niblastic film (2): Undercoat resin layer (3): Metal thin film layer (4) Bismuth dioxide iris layer (5): Transparent topcoat resin layer (6): Adhesive layer

Claims (1)

[Claims] 1. An iris material characterized in that a metal thin film layer, a bismuth oxide iris layer, and a transparent top coat resin layer are laminated in this order on one or both sides of a plastic film directly or via an undercoat resin layer. . 2 Two laminates in which a metal thin film layer, a bismuth oxide iris layer, and a transparent top coat resin layer are laminated in this order on one side of a plastic film directly or via an undercoat resin layer are glued together with the plastic film side inside. An iris material characterized by being laminated together via an agent layer.