JPH0452140A - Iris color laminated body and gold/silver thread - Google Patents

Abstract

PURPOSE:To make iris color colorful and improve glossiness thereof by providing an iris layer constituted of laminating an iris compound thin film layer and a transparent resin layer having an uneven thickness. CONSTITUTION:There are formed a transparent resin undercoat layer 2 and a first transparent inorganic protective film 3a in this order on one side of a transparent plastic film l. Subsequently, the iris layer 4 is formed on the first transparent inorganic protective film 3a. In this case, an iris layer 4 is constituted of laminating a transparent resin layer 4b having an uneven thickness on an iris compound thin film layer 4a. Furthermore, on the resin layer 4b, there is formed a transparent resin finish coat layer 5 through a second transparent inorganic protective layer 3b. Thus, by forming the iris layer 4 on the plastic film 1 through the resin undercoat layer 2 and the first inorganic protective layer 3a, it is possible to improve adhesion between the iris layer 4 and the plastic film 1 which enhance the resistance against such processing as bleaching, coloring, boiling-off and the like thereby preventing the iris color from being deteriorated or eliminated.

Description

[Detailed description of the invention] [Industrial application fields] The present invention relates to an iridescent laminate and gold and silver thread.

[Prior Art/Problems to be Solved by the Invention] Iris-colored gold and silver threads have been known in the past, which are obtained by slitting an iris-colored laminate made of a polyester film or the like provided with a thin film layer of an iris compound such as zinc sulfide. .

However, such conventional iris-colored gold and silver threads exhibit monotonous iris colors and poor luster, and also have practical properties as gold and silver threads (resistance to processing such as bleaching, dyeing, scouring, etc.).
There were also problems such as poor washing resistance.

In view of the above points, it is an object of the present invention to provide an iris-colored laminate, particularly an iris-colored gold and silver thread, which exhibits a rich variety of iris colors, has excellent gloss, and has excellent practical properties.

[Means for Solving the Problems] The present invention provides a transparent iris layer formed by laminating an iris compound thin film layer and a transparent resin layer having a non-uniform thickness on one side of a transparent plastic film. A laminate comprising: on the iris layer or the plastic film,
A transparent second inorganic protective layer is provided on the side of the iris layer opposite to the first inorganic protective layer, which is provided through layers laminated in the order of a transparent resin undercoat layer and a transparent first inorganic protective layer. The present invention relates to an iris-colored laminate characterized in that a transparent resin topcoat layer is provided therebetween.

Furthermore, the present invention relates to an iris-colored gold and silver thread formed by slitting the iris-colored laminate.

[Function and Examples] The iris-colored laminate 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-colored laminate of the present invention. In Figure 1, (1) is a transparent plastic film, on one side of which a transparent resin undercoat layer (a) and a transparent first inorganic protective layer (3a) are provided in this order, and on top of that an iris layer (4). The iris layer (4) of this example is made by laminating a transparent resin layer (4b) having a non-uniform thickness on the iris compound thin film layer (4a). On top of the layer (4b), a transparent resin topcoat layer (
5) is provided.

FIG. 2 is a schematic partial cross-sectional view showing another embodiment of the iris-colored laminate of the present invention. In the iris-colored laminate shown in FIG. 2, a transparent resin undercoat layer (2) and a transparent first inorganic protective layer (3a) are provided in this order on one side of a plastic film (1), and an iris layer is provided on one side of the plastic film (1). (4) is provided, or the iris layer (4) of this example has an iris compound thin film layer (
4a), and a transparent resin overcoat layer (5) is further provided on the thin film layer (4a) via a transparent second inorganic protective layer (3b).

In the iris-colored laminate of the present invention, the iris color can be changed both on the plastic film (1) side and on the opposite side.

In the present invention, the iris layer (4) is an iris compound thin film layer (
4a) and a transparent resin layer (4b) having a non-uniform thickness are laminated, so the iris is rich in color and has excellent gloss.

In addition, by providing the iris layer (4) on the plastic film (1) via the resin undercoat layer (2) and the first inorganic protective layer (3a), the iris layer (4) and the plastic film (1) can be bonded together. The adhesion between the layers is improved, and therefore resistance to processing such as bleaching, dyeing, and scouring, as well as washing resistance, is extremely good, and deterioration or loss of iris color due to these treatments is prevented. This effect is particularly remarkable in the case of the embodiment in which the iris compound thin film layer (4a) is directly laminated on the first inorganic protective layer (3a) as shown in FIG.

Furthermore, since the first inorganic protective layer (3a) has a higher refractive index than the resin layer, it has the effect of making the color of the iris layer (4) richer and more intense, and improving the gloss.

Conventionally known iris-colored laminates in which an overcoat resin layer is laminated on a thin film layer such as zinc sulfide have the disadvantage that the gloss and color development vary greatly depending on the thickness of the thin film layer. By laminating the 1 inorganic protective layer (3a), the refractive index can be changed to a high level regardless of the thickness of the iris compound thin film layer, so that it also has the effect of improving gloss and color development.

Further, as shown in Figure 1.2, a transparent resin topcoat layer (5) is provided on the side of the iris layer (4) opposite to the first inorganic protective layer (3a) with a second inorganic protective layer (3b) interposed therebetween. Therefore, during processing such as bleaching, dyeing, scouring, and washing, the iris layer (4
) is sufficiently protected, and together with the effects of the undercoat layer and the first inorganic protective layer, exhibits extremely excellent performance in the processing and washing resistance. Further, as in the case of FIG. 2, the iris compound thin film layer (4a) has a resin layer (4b) with an uneven thickness.
When placed on top of the iris compound layer, the second inorganic protective layer also has the effect of improving the adhesion between the iris compound thin film layer and the transparent resin top coat layer (5).

Furthermore, the second inorganic protective layer (3b) is the first inorganic protective layer (3a).
) as well as the effect of further enhancing the color development and gloss of the iris laminate of the present invention.

The transparent plastic film (1) used in the present invention is not particularly limited, and includes films conventionally used for applications such as gold and silver thread, such as polyester, polyamide, polyamideimide, polyethylene, polypropylene, cellulose acetate, polycarbonate, and polychloride. A resin film such as vinyl or fluororesin may be used as appropriate. The thickness of transparent plastic film is usually 4 to 100 mm.
It is appropriately selected from the range on the left, more preferably from the range of 6 to 50 meters. In the case of gold and silver thread applications, the mechanical properties of the transparent plastic film almost directly influence the mechanical properties of the gold and silver thread, thereby determining the weavability and texture, so they are appropriately selected and used in consideration of these factors.

Coloring agents such as dyes and pigments, plastic anti-aging agents such as ultraviolet absorbers and antioxidants, antistatic agents, etc. can be added to the plastic film to the extent that its transparency and flexibility are not lost.

Further, in the present invention, the thickness of the transparent resin undercoat layer (2) is usually in the range of 0.01 to 5J, more preferably 0.02 to 3J.
Selected from the Jirl range. If the thickness of the transparent resin undercoat layer is less than 1,000,000, the resistance to washing, bleaching, dyeing, scouring, etc. will be poor, which is not preferable. On the other hand, if it exceeds 5'', it becomes stiff as a whole in applications such as gold and silver threads, and is undesirable because it lacks weavability and texture.

Various resins such as thermoplastic resins, thermosetting resins, electron beam curable resins, and ultraviolet curable resins can be used to form the transparent resin undercoat layer ('2J). For example, acrylic resins , styrene 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 resins, urea-melamine resins, epoxy resins, alkyd resins, aminoalkyd resins, rosin-modified maleic acid resins, and the like are preferably used alone or in mixtures.Curing resins are particularly preferred.

The transparent resin undercoat layer (2) is formed by applying an organic solvent solution, aqueous solution, etc. of the resin to a uniform thickness by a conventional coating method such as gravure coating or spray coating, and drying (thermosetting). In the case of resins, electron beam curable resins, ultraviolet ray curable resins, etc., this is done by curing).

The transparent first inorganic protective layer (3a) in the present invention is a transparent thin film layer of an inorganic material that improves the adhesion between the resin undercoat layer (2) and the iris layer (4), such as silicon, silicon, etc. Oxide (SIO, 5j02.5iOx(x-0,3~2
, Nakazu<0.7~1.8)), aluminum oxide CM'203, M'20x (x=1~B)
) are suitable. As mentioned above, the thin film layer of these inorganic substances also has the effect of enriching the color of the iris layer (4) and further improving the gloss. In addition, since the silicon oxide thin film layer itself exhibits an iris color,
The resulting laminate has a better iris color.

The first inorganic protective layer (3a) has a uniform thickness, usually in the range of 25 to 000 nm, more preferably in the range of 30 to 500 nm. If the thickness of the protective layer (3a) is less than 25 nm, the effect of preventing deterioration of iris color against various treatments will not be sufficient, while if it exceeds 1000 na+, transparency may decrease,
Otherwise, cracks are likely to occur, and resistance to various treatments is reduced, which is not preferable.

The first inorganic protective layer (3a) may be formed using a corresponding evaporation source material by a conventional vapor deposition thin film forming method such as a resistance heating method, a high frequency induction heating method, or an electron beam heating method. The evaporation source material is Sj in the case of a silicon protective layer, SiO, 5i02, or a mixture thereof in the case of a silicon oxide protective layer, and S
A press-molded material such as a mixture of 1 and 5102 is used, and in the case of an aluminum oxide protective layer, a press-molded material of M2O3 is used as appropriate.

The thickness of the first inorganic protective layer (3a) is a value measured by a crystal oscillator thickness monitor.

Examples of the iris compound thin film layer (4a) in the present invention include thin film layers of zinc sulfide, bismuth oxide, antimony oxide, titanium oxide, silicon oxide, zinc oxide, magnesium fluoride, potassium fluoride, cryolite, and the like. Zinc sulfide, bismuth oxide [B101B12
03, B120< , Bi2O5, Bi20x (x
-2~5) ) and antimony oxide [5b203.5
b204Sb205.5b20x (x=2-5)
) is preferred.

The iris compound thin film layer (4a) has a uniform thickness, usually in the range of 5 to 1100 nm, more preferably in the range of 20 to 80 nm. If the thickness of the thin film layer is less than 5 nm, the iris gloss cannot be changed, which is not preferable. On the other hand, if it exceeds 1100 n, the iris luster will be rather poor, cracks will easily appear, and the resistance to treatments such as scouring will decrease, which is not preferable.

The iris compound thin film layer (4a) may be formed by a conventional vapor deposition thin film forming method such as a resistance heating method, a high frequency induction heating method, or an electron beam heating method using a corresponding evaporation source material.

There are no particular limitations on the evaporation source material used to form the iris compound thin film layer (4a). For example, as an evaporation source material for forming a zinc sulfide thin film layer, press molding of zinc sulfide (Zn5) powder with a purity of 70% by weight or more can be used as appropriate; however, zinc sulfide powder with a purity of 90% by weight or more can be used. Press-molded materials are more preferably used. As the evaporation source material for forming the bismuth oxide thin film layer, a press-molded bismuth oxide powder with a purity of 80% by weight or more can be used, or a press-molded bismuth oxide powder with a purity of 90% by weight or more can be used. is more preferably used. As the evaporation source material for forming the antimony oxide thin film layer, any press-molded antimony oxide powder with a purity of 80% by weight or more can be used, but antimony oxide powder with a purity of 90% by weight or more is press-molded. is more preferably used.

The thickness of the iris compound thin film layer is a value measured using a quartz crystal resonator film thickness monitor.

The resin layer (4b) having a non-uniform thickness usually has a thickness of 0.01~
The thickness is nonuniform within a range of 5 ρ, more preferably within a range of 0.02 to 3 ρ. If the thickness of the resin layer is less than 0.01 mm, the iris gloss will hardly be changed, which is not preferable. On the other hand, if the number exceeds 5, the iris luster is rather poor, and furthermore, in the case of applications such as gold and silver threads, the thread becomes stiff as a whole and lacks weavability and texture, which is not preferable. Resin layer (
The degree of non-uniformity in the thickness of 4b) [the difference between thick and thin parts of the resin layer (hereinafter referred to as non-uniformity)] is 0.1 to 1.
It is preferable to set it to about um.

If the degree of nonuniformity is less than 0.1 J, the color development will be monotonous and it will be difficult to change the rich iris color, while if it exceeds 1 um, the color development will become pale, which is not preferable. The non-uniform thickness period (refers to the distance between adjacent thick sections or the distance between adjacent thin sections) corresponds to the density of the iris pattern, typically between 0.5 and 20
Although approximately c+n is preferable, it is not limited to this range.

Note that the period may or may not be constant.

The non-uniform pattern is usually a striped pattern, but is not limited to this.

Various resins such as thermoplastic resins, thermosetting resins, electron beam curable resins, and ultraviolet curable resins can be used as the resin for forming the transparent resin layer (4b) having a nonuniform thickness. , for example, arykyl resin, styrene resin, acrylic-styrene copolymer, vinyl chloride resin,
Vinyl acetate resin, vinyl chloride-vinyl acetate copolymer,
Individual materials such as polyvinyl butyral, polycarbonate, nitrocellulose, cellulose acetate, urethane resin, urea resin, melamine resin, urea-melamine resin, epoxy resin, alkyd resin, aminoalkyd resin, rosin-modified maleic acid resin, etc. Or a mixture is preferably used.

The transparent resin layer (4b) having a non-uniform thickness is formed by applying an organic solvent solution, aqueous solution, etc. of the resin to a non-uniform thickness using a conventional coating method such as a gravure coating method or a spray coating method. This is carried out by drying (curing in the case of thermosetting resins, electron beam curable resins, ultraviolet curable resins, etc.).

The transparent second inorganic protective layer (3b) of the present invention is the iris layer (4).
It is a transparent thin film layer of an inorganic substance that can improve the adhesion between the transparent top coat layer and the transparent top coat layer, and the materials that can be used and the coating method are the same as those for the first inorganic protective layer (3a). The material of the first inorganic protective layer and the material of the second inorganic protective layer do not necessarily have to be the same.

The preferred thickness range is also the same as that of the first inorganic protective layer. By providing the second inorganic protective layer (3b), the adhesion between the transparent resin topcoat layer (5) and the iris layer (4) is improved, and the iris color of the resulting laminate is different from that of the first inorganic protective layer alone. It will be better than the one.

Additionally, processing resistance and washing resistance are also improved. This effect is particularly remarkable when the iris compound thin film layer (4a) is in contact with the second inorganic protective layer (3b).

The thickness of the transparent resin top coat layer (5) in the present invention is usually 0.
Range of 01 to 5JjIrI, more preferably 0.02 to
Selected from the range of 3J. The thickness of the transparent resin top coat layer is 0.
If it is less than 01a+, the resistance to the above-mentioned treatments will not be sufficient and it is not preferable. On the other hand, if the number of threads exceeds 5, the thread becomes stiff as a whole and lacks weavability and texture, which is undesirable in applications such as gold and silver threads.

Various resins such as thermoplastic resins, thermosetting resins, electron beam curable resins, and ultraviolet curable resins can be used as the resin for forming the transparent resin top coat layer (5).
For example, acrylic resin, styrene resin, acrylic resin, etc.
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, urea-melamine Preferably used are resins such as epoxy resins, alkyd resins, aminoalkyd resins, rosin-modified maleic acid resins, and the like alone or in mixtures. In particular, curable resins are preferably used.

The transparent resin top coat layer (5) is formed by applying an organic solvent solution, aqueous solution, etc. of the resin to a uniform thickness by a conventional coating method such as gravure coating or spray coating, and drying (thermosetting). curing resin, electron beam curable resin, ultraviolet ray curable resin, etc.)
It is done by doing.

Note that the transparent resin undercoat layer (2), the transparent resin layer (4b) having a non-uniform thickness, and the transparent resin topcoat layer (5)
may be appropriately colored with dyes and/or pigments as long as transparency is not impaired. Further, antistatic agents, antioxidants, ultraviolet absorbers, etc. can be added.

In the present invention, the two laminates may be laminated using an adhesive with the plastic film (1) side facing inside or the opposite side facing inside to form a two-bly structure. If the opposite side of the plastic film (1) is placed inside to form a two-brie configuration, the gold and silver threads can withstand not only scouring treatment but also georgette treatment.

As the adhesive, a urethane resin-based adhesive, an epoxy resin-based adhesive, a polyester resin-based adhesive, an acrylic resin-based adhesive, a synthetic rubber-based adhesive, or the like is appropriately used.

The iridescent laminate of the present invention is used for packaging materials, labels, sequins, poster buttons, pendants, and various other decorative materials, and is particularly suitable for use with gold and silver threads.

The iridescent gold and silver threads can be obtained by slitting the iridescent laminate to a suitable width, for example, 0.15 to 2 + u.

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

Example 1 On one side of a 12-thick polyethylene terephthalate film, 100 parts of thermosetting acrylic resin (parts by weight, the same applies hereinafter), 5 parts of polyisocyanate, 50 parts of toluene, 30 parts of xylene, and 20 parts of n-butyl alcohol were added. Apply a transparent resin coating with a gravure coater and dry it at 160℃
A transparent resin undercoat layer having a uniform thickness of 0.2 times was formed by curing for 20 seconds, and on top of that, St and 5
A first protective layer of silicon oxide having a uniform thickness of 40 rv was formed by evaporating using a press-molded pellet of J02 as an evaporation source using a resistance heating method, and on top of that a silicon oxide first protective layer with a purity of 99% was formed.
Press-molded pellets of zinc sulfide (ZnS) powder of 50 parts, polyisocyanate 5
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, dried, and cured at 160°C for 20 seconds to form a transparent resin layer with uneven thickness. (Average thickness 0.5JA,
A maximum thickness of 0.8-1, a minimum thickness of 0.2 Jirl, a thickness non-uniformity of 0.6, a non-uniform period of 20 mm, and a parallel striped pattern) were formed. Furthermore, Si and 5i0
Using the press-molded pellets of 2 as an evaporation source, a second protective layer made of silicon oxide having a uniform thickness of 40 parts m was vapor-deposited using a resistance heating method, and on top of that, 50 parts of thermosetting acrylic resin, A transparent resin coating consisting of 5 parts of polyisocyanate and 20 parts of toluene was applied using a gravure coater, dried, and cured at 160°C for 20 seconds to a thickness of 0.
．． A laminate exhibiting a beautiful iridescent color was obtained by forming a transparent resin overcoat layer having a uniform thickness.

The resulting laminate was microslit into 120 pieces (0.252 mra width) to obtain iridescent gold and silver threads.

Example 2 Rainbow was produced in the same manner as in Example 1, except that instead of the zinc sulfide thin film layer, bismuth oxide (Bi123) was used as an evaporation source to form a bismuth oxide thin film layer with a uniform thickness. A colored laminate and iridescent gold and silver thread were obtained.

Example 3 In the same manner as in Example 1, except that instead of the zinc sulfide thin film layer, antimony oxide (5b20 s) was used as an evaporation source to form an antimony oxide thin film layer with a uniform thickness. An iridescent laminate and an iridescent gold and silver thread were obtained.

Example 4 Rainbow was produced in the same manner as in Example 1 except that instead of the silicon oxide protective layer in Example 1, silicon was used as the evaporation source to form a silicon protective layer having a uniform thickness of 30 ns. A colored laminate and iridescent gold and silver thread were obtained.

Example 5 In Example 1, except that instead of the silicon oxide protective layer, aluminum oxide (Af'203) was used as the evaporation source to form an aluminum oxide protective layer having a uniform thickness of 50 nm. An iridescent laminate and an iridescent gold and silver thread were obtained in the same manner as in Example 1.

Example 6 Two laminates obtained in Example 1 were placed with the polyethylene terephthalate film inside to a thickness of 2J! A 2-ply iris-colored laminate was obtained by laminating them together through a urethane resin adhesive layer of m.

Furthermore, this laminate was slit in the same manner as in Example 1 to obtain iridescent gold and silver threads.

Example 7 A resin undercoat layer and a silicon oxide protective layer were sequentially formed on one side of a polyethylene terephthalate film having a thickness of 12 parts m in the same manner as in Example 1, and then 100 parts of a thermosetting acrylic resin and a polyisocyanate 5 part, toluene 5
A transparent resin coating consisting of 0 parts, 30 parts of xylene, and 20 parts of n-butyl alcohol was applied with a gravure coater and dried.
] 60" CX A transparent resin layer with non-uniform thickness cured under the conditions of 20 seconds (average thickness 0.6., maximum thickness 1, minimum thickness 0.2, thickness non-uniformity On top of that, a press-molded pellet of 99% pure zinc sulfide powder was evaporated using a resistance heating method as an evaporation source, and a thickness of 4 mm was formed.
A zinc sulfide thin film layer with a uniform thickness of OnI 11 was formed. Furthermore, a pellet press-molded with Si and 5i02 is used as an evaporation source, and the thickness is 40r+ by resistance heating method.
A second protective layer made of silicon oxide having a uniform thickness of m is formed by vapor deposition, and a thermosetting acrylic resin 50 m is deposited thereon.
A transparent resin coating consisting of 5 parts of polyisocyanate, 50 parts of toluene, 30 parts of xylene, and 20 parts of n-butyl alcohol was applied with a gravure coater, dried, and heated at 160°C x 2.
Cured for 0 seconds to a thickness of 0.2. A transparent resin top coat layer having a uniform thickness was formed to obtain a laminate exhibiting a beautiful iridescent color.

The obtained laminate was slit in the same manner as in Example 1 to obtain iridescent gold and silver threads.

Comparative Example 1 A transparent resin coating consisting of 100 parts of thermosetting acrylic resin, 5 parts of polyisocyanate, 50 parts of toluene, 30 parts of xylene, and 20 parts of n-butyl alcohol was coated on one side of the left polyethylene terephthalate film with a thickness of 12. The coating was applied with a coater, dried, and cured at 160°C for 20 seconds to form a transparent resin undercoat layer with a uniform thickness of 0.2 degrees. Zinc sulfide was vacuum-deposited on top of it to a thickness of 4 degrees.
A zinc sulfide layer having a uniform thickness of 0 parts w is formed, and then a transparent resin coating consisting of 50 parts of thermosetting acrylic resin, 5 parts of polyisocyanate, 50 parts of toluene, 30 parts of xylene, and 20 parts of n-butyl alcohol is applied. The agent was applied with a gravure coater, dried, and cured at 160° C. for 20 seconds to form a transparent resin overcoat layer having a uniform thickness of 0.2 mm to obtain an iridescent laminate.

Furthermore, this laminate was slit in the same manner as in Example 1 to obtain iridescent gold and silver threads.

Comparative Example 2 On one side of a polyethylene terephthalate film with a thickness of 12 parts m, zinc sulfide was vacuum-deposited to form a zinc sulfide layer having a uniform thickness of 40 parts m, and on top of that, 50 parts of thermosetting acrylic resin was applied. , 5 parts of polyisocyanate, 50 parts of toluene, 30 parts of xylene, 20 parts of n-butyl alcohol
A transparent resin coating consisting of 50% of the total thickness was applied with a gravure coater, dried, and cured at 160°C for 20 seconds to form a transparent resin layer with an uneven thickness (average thickness: 0.5cm, maximum thickness:
0.8mm, minimum thickness 0.2mm, thickness non-uniformity 0.6
An iris-colored laminate was obtained by forming a non-uniform periodic 20 mm parallel striped pattern.

Furthermore, this laminate was slit in the same manner as in Example 1 to obtain iridescent gold and silver threads.

Comparative Example 3 A transparent resin coating consisting of 100 parts of thermosetting acrylic resin, 5 parts of polyisocyanate, 50 parts of toluene, 30 parts of xylene, and 20 parts of n-butyl alcohol was gravure coated on one side of a 12-thick polyethylene terephthalate film. The coating was applied with a coater, dried, and cured at 160°C for 20 seconds to form a transparent resin undercoat layer with a uniform thickness of 0.2 degrees. Zinc sulfide was vacuum-deposited on top of it to a thickness of 4 degrees.
A zinc sulfide layer having a uniform thickness of 0 parts m is formed, and then a transparent resin coating consisting of 50 parts of thermosetting acrylic resin, 5 parts of polyisocyanate, 50 parts of toluene, 30 parts of xylene, and 20 parts of n-butyl alcohol is applied. The agent was applied with a gravure coater, dried, and cured at 160°C for 20 seconds to form a transparent resin layer with an uneven thickness (average thickness 0.6
An iris-colored laminate was obtained by forming a layer with a maximum thickness of II, a minimum thickness of 0.2 mm, a thickness non-uniformity of 0.8 left, a non-uniform period of 20 mm, and a parallel striped pattern.

Further, this laminate was subjected to pickpocketing and sorting in the same manner as in Example 1 to obtain iridescent gold and silver threads.

The iris color of each of the obtained iris-colored gold and silver threads was visually observed and evaluated according to the following criteria.

◎・・・・・・The iris color is strong in both color and luster.

O...Iridescent color or strong.

Δ: The iris color is monotonous.

×...The iris color is pale.

Further, after each iris-colored gold and silver thread was subjected to the following treatments, changes in iris color were visually observed and evaluated according to the following criteria. In this evaluation, the change in iris color before and after the treatment is looked at, so even if the iris color before the treatment is inferior, if the iris color does not change before and after the treatment, the evaluation will be A.

A: No change in iris color.

B: The iris layer peeled off slightly.

C: The iris layer peeled off.

Treatment method (1) Bleach treatment solution 4g sodium hypochlorite, 1g water treated charcoal =
70°C Processing time: 90 minutes (2) Nylon dyeing solution: 1 g of glacial acetic acid, 0.5 g of amylazine D, 5% acid dye (Diacid Br111. Blue BR)
owL water 1g Processing temperature: 95°C Processing time: 90 minutes (3) Rayon dyeing solution, anhydrous mirabilite 15g 1 Monogen (170T) 1
g, Direct dye (Direct Deep Black
EX) 5% OVFS water 1g Treatment temperature = 95°C Treatment time = 90 minutes (4) Wool dyeing treatment solution 1: Anhydrous sodium sulfate 3.3g, acetic acid 1g, Apolan S
C0.5g, acid dye (Kayalon former 11ing
Black TLB) 5% ovr, water g Treatment temperature: 95°C Treatment time: 90 minutes Treatment liquid 2: Acidamine Super 2g, water] 11 Treatment temperature: 40°C Treatment time: 30 minutes (5) Reactive dyeing treatment liquid: Anhydrous 40g of mirabilite, 15g of sodium carbonate, reactive dye (Cibacron Br111. Red BE
) 5% OVF, 1 g of water Treatment temperature: 260°C Treatment time = 90 minutes (6) Silk scouring treatment liquid: Marcel soap 3 g 1 hydrosulfide o
, g, H, 3.9 g of sodium silicate.

water 11 Processing temperature: 95℃ Processing time = 9 hours The results are shown in Table 1.

[Blank below] U Effects of the invention In the iris colored laminate, the iris layer has a laminated structure of an iris compound thin film layer and a resin layer having a non-uniform thickness, and this iris layer is coated with a transparent resin undercoat layer and By using a structure in which a transparent inorganic protective layer is placed on a plastic film, and a transparent resin topcoat layer is provided on the other side of the iris layer with a transparent inorganic protective layer in between, the iris has a very rich variety of colors. It is strong, has an extremely high luster, exhibits an extremely clear iris pattern, and has excellent resistance to textile processing such as scouring and bleaching, and can be piece-dyed into nylon, wool, etc.

(22 (3a): (3b): (4): (4a): (4b): (5): Transparent resin undercoat layer First transparent inorganic protective layer Second transparent inorganic protective layer iris layer Iris compound thin film layer Transparent resin layer with uneven thickness Transparent resin topcoat layer

[Brief explanation of drawings]

FIG. 1 is a schematic partial sectional view showing one embodiment of the iris-colored laminate of the present invention, and FIG. 2 is a schematic partial sectional view showing another embodiment. (Drawing code) (1): Transparent plastic film

Claims (1)

[Scope of Claims] 1. A laminate comprising a transparent iris layer formed by laminating an iris compound thin film layer and a transparent resin layer having a non-uniform thickness on one side of a transparent plastic film. The iris layer is provided on the plastic film through layers laminated in the order of a transparent resin undercoat layer and a transparent first inorganic protective layer, and the first inorganic protective layer of the iris layer and An iris-colored laminate characterized in that a transparent resin topcoat layer is provided on the opposite side with a transparent second inorganic protective layer interposed therebetween. 2. A transparent resin undercoat layer, a transparent first inorganic protective layer, an iris compound thin film layer, a transparent resin layer with non-uniform thickness, a transparent second inorganic protective layer and a transparent resin undercoat layer on one side of the transparent plastic film. The iris-colored laminate according to claim 1, wherein the resin topcoat layers are provided in this order. 3. On one side of the transparent plastic film, a transparent resin undercoat layer, a transparent first inorganic protective layer, a transparent resin layer with non-uniform thickness, an iris compound thin film layer, a transparent second inorganic protective layer and a transparent The iris-colored laminate according to claim 1, wherein the resin topcoat layers are provided in this order. 4. An iris-colored gold and silver thread, which is a slit thread of the iris-colored laminate according to claim 1, 2, or 3.