JPH0525728A - Colored yarn having metallic luster - Google Patents

Abstract

PURPOSE:To obtain the subject colored yarn having excellent light resistance and free from darkening or fading of color by forming a transparent layer containing dispersed ultraviolet-shielding metal oxide particles having specific particle diameter on a film having a metallized layer and a colored layer containing dye or pigment and slitting the obtained coated film. CONSTITUTION:A surface of a polyethylene terephthalate film constituting a thermoplastic resin base layer 1 is metallized with aluminum, etc., to form a metallized layer 2. The surface of the metallized layer is coated with a liquid mixture of a yellow transparent pigment or dye and an acrylic resin varnish, etc., and the coating layer is dried to form a colored layer 3. The colored layer is coated with a liquid mixture composed of a fluororesin varnish and a small amount of an isocyanate hardening agent and containing dispersed particles of ultraviolet-shielding metal oxide such as zinc oxide having particle diameter of <=0.1mum to form a transparent layer 4. The film is slit into narrow strips to obtain the objective colored yarn having metallic luster.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a colored yarn having a metallic luster, more specifically, a film having a metal vapor deposition layer, a coloring layer containing a dye or a pigment, and a transparent layer in which ultraviolet-shielding metal oxide particles are dispersed. The colored yarn having a metallic luster consisting of the slit body.

[0002]

2. Description of the Related Art Colored yarn having a metallic luster, which is composed of a slit body formed by slitting a film having a vapor-deposited layer of a metal such as aluminum or silver and a colored layer containing a dye or a pigment, is known.

Colored yarn having an aluminum vapor-deposited layer is widely used because it is advantageous in terms of cost, but it has a drawback of low gloss. Therefore, in order to increase the glossiness, a pigment containing a fluorescent pigment in the coloring layer is generally used. However, fluorescent pigments generally have poor light resistance,
Therefore, there is a problem that the glossiness of the colored yarn is lowered and the color is dull over a long period of time. Further, the colored yarn having the silver vapor deposition layer also has a problem that the color itself becomes dull because oxidation of silver itself progresses after a long period of time.

It is known to form an overcoat layer made of a resin binder in which an organic ultraviolet absorber can be dissolved on a metal vapor deposition layer for the purpose of suppressing the dullness of the color of the colored yarn. However, since the amount of the organic ultraviolet absorber dissolved is small, the overcoat layer has to be thick (generally, the thickness is 10 to 15 μm). Therefore, the above-mentioned overcoat layer cannot be formed by using the gravure printing method which is generally advantageous in that the film formation rate can be increased.

[0005]

An object of the present invention is to provide a colored thread having a metallic luster, which comprises a slit body formed by slitting a film having a metal vapor deposition layer and a colored layer containing a dye or a pigment into a long slit, It is an object of the present invention to provide a colored yarn which has excellent light resistance and hardly causes dullness or discoloration even after long-term use.

[0006]

Means for Solving the Problems The above object is to provide an ultraviolet-shielding metal oxide particle having a particle size of 0.1 μm or less on a surface of a film having a metal vapor deposition layer and a colored layer containing a dye or a pigment. The present invention is achieved by a colored yarn having a metallic luster, which comprises a slit body of a film having a transparent film dispersed therein.

The colored yarn of the present invention will be described below with reference to the accompanying drawings showing the layer structure of the film. FIG. 1 is a cross-sectional view showing an example of a layer structure of a film constituting a colored yarn according to the present invention. This film is a base resin layer 1 made of polyethylene terephthalate or other thermoplastic resin, and this base resin layer. Deposited layer 2 of metal such as aluminum formed on the above, colored layer 3 formed on the deposited aluminum layer, and particles of ultraviolet shielding metal oxide such as zinc oxide formed on the surface of the colored layer 3 Layer 4 of transparent film that disperses
Consists of. The coloring layer 3 is composed of an organic or inorganic matrix in which a coloring material mainly containing a fluorescent pigment is dispersed.

FIG. 2 is a cross-sectional view showing another example of the layer structure of the film constituting the colored yarn according to the present invention. This film has a base resin layer 1 made of polyethylene phthalate or other thermoplastic resin, Deposited layer 2'of a metal such as silver formed on one surface of the base resin layer, titanium dioxide deposited layer (protective layer) 5 formed on the surface of silver deposited layer 2 ', base resin layer 1 and a colored layer 3'formed on the other side, and a layer 4 of a transparent film formed on the side of the colored layer 3'wherein UV-shielding metal oxide particles such as zinc oxide are dispersed.
The coloring layer 3'is formed by dispersing a coloring material mainly containing a dye in an organic or inorganic matrix.

The film forming the colored yarn of the present invention has a metal vapor deposition layer, a coloring layer containing a dye or a pigment, and a layer of a transparent film in which ultraviolet shielding metal oxide particles are dispersed. The colored layer 3 may be directly formed on the metal vapor-deposited layer 2 as shown in FIG. 1, and the colored layer 3'and the metal layer 2'may be formed on the transparent resin substrate layer 1 as shown in FIG. It may be formed on the opposite side.

As the resin base material layer, a thermoplastic resin having good mechanical strength and light resistance, for example, polyethylene terephthalate or other polyester resin, polyamide resin, polyvinyl chloride resin or the like is used, and polyethylene terephthalate or other polyester resin is used. preferable. The thickness of the resin substrate layer is preferably thin in order to obtain a thin colored yarn, and is generally preferably about 1 to 20 μm.

As the metal vapor deposition layer, a vapor deposition layer of aluminum or silver is used. The vapor deposition method and the thickness of the vapor deposited metal film are not particularly limited, and a conventionally used method and film thickness can be adopted. Generally, the thickness of the deposited metal film is preferably in the range of 0.05 to 1 μm.

The colored layer is formed by applying a dye or pigment with a resin binder in the form of a solution or dispersion. The type of dye or pigment used is not particularly limited, and those conventionally used can be used. When the metal vapor deposition layer is made of aluminum, it is preferable to use a fluorescent pigment because the metallic luster is weak. As the resin binder, those conventionally used can be used, but acrylic resin is preferably used. Generally, the thickness of the colored layer is preferably in the range of 1 to 5 μm.

Zinc oxide particles are preferably used as the ultraviolet-shielding metal oxide particles. The particles of the ultraviolet-shielding metal oxide such as zinc oxide used in the present invention have a particle size of 0.1 μm or less, and preferably at least 90% of them have a particle size of 0.005 to 0.05 μm. The particles are in the particle size range of. If the particle size is larger than 0.1 μm,
Since the surface area per unit weight is small, the ultraviolet shielding ability is low, and since the light scattering in the visible light region is large, the haze becomes high, and the intended colored yarn having good light fastness cannot be obtained.
Fine particles of zinc oxide can be obtained, for example, from Japanese Patent Application No. 1-130422.
It can be prepared by the method described in the specification.

The particles of the UV-shielding metal oxide are applied to an organic or inorganic binder in a uniformly dispersed form. The binder must be one that forms a transparent film, and suitable binders include, for example, polyester resin, vinyl chloride and other vinyl resin, acrylic resin, fluororesin, silicone resin, sodium silicate and others. Alkali silicates, inorganic colloids such as silica sol and alumina sol, metal alkoxides such as tetraethoxysilane, phosphates such as aluminum phosphate, metal salts such as tin acetate, metal soaps, and organometallic compounds. Be done. You may use these binders in combination of 2 or more type. These binders are dissolved or dispersed in a solvent or dispersion medium selected from aromatic hydrocarbons, alcohols, esters, ketones, ethers, chlorinated or fluorinated hydrocarbons and water. Applied. Also, a small amount of a curing agent can be added in addition to the resin binder.

The amount of UV-shielding metal oxide particles is preferably 5 to 90% by weight, more preferably 40 to 80% by weight, based on the weight of the transparent film. If the amount is too small, the ultraviolet shielding ability is poor, and conversely, if the amount is too large, the film forming property is deteriorated.

The thickness of the transparent film containing the ultraviolet-shielding metal oxide particles is not particularly limited, but in consideration of the transparency and formability of the film, it is preferably 20 μm or less, particularly 1 to 5 μm.
The transparency of the film should have a haze value of 10 or less, preferably a haze value of 1 or less.

The method for forming a transparent layer containing UV-shielding metal oxide particles and a colored layer containing a coloring agent is not particularly limited, and is conventionally used such as spray coating, dip coating, spin coating and gravure printing. A film forming method can be adopted. Among them, the gravure printing method, which can considerably increase the film formation rate, is preferable.

The film having the layer structure as described above is slit into a width of 0.2 to 1.0 mm, and if necessary, the elongated slit body is lightly twisted or lightly entangled by another method, A colored yarn having a desired metallic luster is obtained by setting by steam treatment or other heating treatment.

[0019]

INDUSTRIAL APPLICABILITY In the colored yarn of the present invention, the transparent film layer of particles of an ultraviolet shielding metal oxide such as zinc oxide formed on the colored layer containing a coloring material has a good ultraviolet shielding ability. , Fading and dullness of colored threads having metallic luster are prevented or reduced. Furthermore, since the UV-shielding transparent film layer can maintain an acceptable UV-shielding ability even when it is extremely thin, it can be made into a very thin colored thread, which has been difficult to achieve in the past. Since the film layer has a high transmittance over the entire wavelength range of visible light, the metallic luster of the colored yarn has a high sharpness.

[0020]

EXAMPLES Specific examples of the present invention will be described below with reference to examples. Aluminum was vapor-deposited to a thickness of 0.1 μm on the surface of a polyethylene terephthalate film having a thickness of 12 μm. On this vapor-deposited surface, a liquid mixture consisting of 5 parts by weight of a yellow transparent pigment, 50 parts by weight of an acrylic resin varnish containing a nonvolatile content of about 50% by weight, and 45 parts by weight of ethyl acetate was formed by a gravure printing method to form a layer having a dry film pressure of 2 μm. did. A transparent film layer containing zinc oxide particles was formed on the colored layer prepared as described above. That is, the average particle size is about 0.01 μm, and the particle size is 9 μm.
Zinc oxide 15 having 0% by weight or more and a particle size of 0.1 μm or less
Fluorine resin varnish 20 with parts by weight and nonvolatile content of about 50% by weight
By weight, 60 parts by weight of methyl isobutyl ketone was mixed in a ball mill for 20 minutes, and a liquid mixture obtained by adding a small amount of an isocyanate curing agent to the mixture was formed into a transparent film layer having a dry film thickness of 2 μm on the colored layer by a gravure printing method. ..

When a film having the above zinc oxide-containing transparent film layer was subjected to an accelerated weathering test using a xenon fade meter, no change was observed after 50 hours of exposure.
For comparison, a similar accelerated weathering test was carried out on a film in which the zinc oxide-containing transparent film layer was not formed on the colored layer, and the brightness was considerably lowered at the time of exposure for 10 hours. A film having the zinc oxide-containing transparent film is
When it was shredded to a width of mm and lightly twisted and steamed, a thread with a golden luster was obtained.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an example of a layer structure of a film constituting a colored yarn according to the present invention.

FIG. 2 is a cross-sectional view showing another example of the layer structure of the film constituting the colored yarn according to the present invention.

[Explanation of symbols]

1 Base Material Thermoplastic Resin Layer 2, 2'Metal Vapor Deposition Layer 3, 3 'Coloring Layer Containing Dye or Pigment 4 Transparent Film Layer in which UV-Shielding Metal Oxide Particles are Dispersed 5 Titanium Dioxide Vapor Deposition Layer (Protective Layer)

Claims (1)

Claim: What is claimed is: 1. A film having a metal vapor-deposited layer and a colored layer containing a dye or a pigment has a particle size of 0.1 on the surface of the colored layer.
A colored yarn having a metallic luster, which is formed from a slit body of a film formed with a transparent film in which UV-shielding metal oxide particles having a size of μm or less are dispersed.