JPS60139839A - Reversible photochromic tinsel yarn - 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 This invention relates to a reversible photochromic gold and silver thread provided with a resin layer dyed with a mink dye. 'Conventionally, a colored or uncolored top foot is placed on the metallized layer of a metallized film, which is formed by providing a metallized layer on one or both sides of a base film such as polyester, and on a pace film that does not have a metallized layer. One-ply flat thread type gold and silver thread with layers and slits, a colored or uncolored undercoat layer on one side of the base film, a metal vapor deposited layer on top of that, a white top foot layer, and the notch. The Japanese paper layer is made of pre-twisted gold and silver thread or threads with slits attached to the core thread on the Japanese paper layer side. Two pieces of the above-mentioned vapor-deposited film, each of which has a base film, an undercoat layer, and then a metal vapor-deposited layer, are laminated together with the metal vapor-deposited layer on the inside. Two-ply gold and silver threads are known, which are made by slitting thin threads.

As the dyes or pigments used to color these gold and silver threads, those that are as resistant to fading as possible and have good light fastness are being used because they are preferred to reduce fading of the gold and silver threads. .

The inventors of the present invention have conducted intensive research to improve the quality of gold and silver threads as described above, which have been conventionally used, by giving them the property of reversibly changing the color □. By providing a resin layer dyed with photochromic ivy dye on the side where the gold and silver vapor deposited layer is visible, the gold and silver thread will gradually change color when irradiated with light of a predetermined wavelength, and will eventually reach a certain color tone. They discovered that it is possible to obtain reversible photochromic gold and silver threads that return to their original color when irradiation is stopped, and have completed the present invention.

The gold and silver thread having a metal vapor deposition layer used in the present invention is a gold and silver thread having a structure similar to conventionally used gold and silver threads, and has a resin layer that can be dyed with a photochromic dye on the side where the metal vapor deposition layer is visible. It can be used without particular limitation as long as it has the following.

As the photoximic dye, for example, trans-
There are cis isomers, tautomers, open/closed ring forms, ionic dissociation forms, radical dissociation forms, triplet state formation forms, etc. Typical examples of these dyes include Kayakto Luminous (Kayaot Luminous).
There are products such as O-B (manufactured by Nippon Kayaku), and the commonly used Homi mixture is used. A resin layer formed on the side where the metal vapor deposition layer is visible, for example, made of nitrocellulose V epoxy resin/urea-melamine resin, acrylic-melamine resin, urethane resin, polystyrene resin, etc., can be dyed or undyed as a photochromic dye. As long as it works, it can be used without any particular limitations.
The amount is preferably 0.1 to 20 parts, more preferably 4 to 12 parts. When the loading amount is less than 0.1 part, the effect of the photoximic dye, that is, the obtained gold and silver thread becomes difficult to change color even when irradiated with light, and when the loading amount exceeds 20 parts, the effect of the photoximic dye becomes difficult to change even when the gold and silver thread is irradiated with light. Although the discoloration property is good, it is difficult to return to the original state even if the irradiation with light is stopped.

The dyeing of the resin layer with a photoximic dye involves mixing the resin component forming the resin layer and the dye with methyl ethyl ketone,
Toluene, butylacetate, 6! A common method is to dissolve and mix using a solvent such as 7vsolp and apply the resulting solution, but the method is not limited to this method.

The solution containing the photochromic dye and resin component as described above may contain conventionally used dyes, pigments, and the like.

The thickness of the resin layer formed from the solution thus obtained is usually about 0.5 to 6.0 μm.

Next, the gold and silver thread of the present invention will be explained based on a diagram.

FIGS. 1 to 6 show the reversible photodiode of the present invention, respectively.
It is a cross-sectional explanatory view showing the actual FIfA mode of Tsuku gold and silver thread.

- In the gold and silver thread shown in Figure 1, after the metal vapor deposition layer (2) is formed on the base film (1), the top coat layer (8
) is provided. The thickness of the base film (1) is
Although it varies depending on the use, it is generally about 2 to 75 μm, and it may be a colored transparent film, but a colorless transparent film may be used.
Usually one film is used. A film with a thickness of 600 mm is coated on such a base film (1) by a normal method.
A metal vapor deposited layer (2) of about 1000A is formed. In order to protect the formed metal vapor deposition layer (2), a top coat layer (8) having a thickness of about 0.5 to 3 μm is provided on the metal vapor deposition layer (2) by a method such as coating or lamination.

A photoximic dye is added to the top coat layer (8), and commonly used dyes or pigments other than the photochromitter dye may also be added together with the photochromic dye. When providing the top coat layer (+1),
Metal vapor deposited layer (2) of base film (1) as required
A top coat layer (8) may also be provided on the side where is not provided.

When the raw fabric produced in this way is slit, the resulting gold and silver threads (flat threads) gradually change color due to irradiation with light of a predetermined wavelength, and eventually become a certain color tone, and when the light irradiation is stopped, the resulting gold and silver threads (flat threads) gradually change color. It has the remarkable effect of returning to its original color.

When a top coat layer is formed using a combination of photoximic dyes and conventionally used dyes or pigments, two top foot layers (3a) are used as shown in Figure 2.
, (3b), one layer may be a layer containing a photochromic dye, and the other layer may be a layer containing a conventionally used dye or pigment. When the top coat layer is 2M in this manner, in addition to a bright metallic luster, the color of each dye or pigment is maintained, and problems such as color change and dullness that sometimes occur due to mixing of dyes, etc. are eliminated.

In Figures 1 and 2, the base film (1)
Although the embodiment in which the metal vapor deposited layer (2) is formed only on one side of the base film (1) has been shown, as shown in FIG. (
2) A top coat layer (8) or top coat layers (3a) and (3b) may be provided on top, and the gold and silver threads produced in this way can be weaved or pattern-woven. It has the advantage that the color of the gold and silver thread changes from its original color by irradiating it with a specific wavelength, making the color and design more effective.

FIGS. 4 and 5 are cross-sectional explanatory views for explaining the structure of a vapor-deposited film (original fabric) used for producing a first-twisted type of reversible film 12 (gold and silver thread) of the present invention, respectively.

In Fig. 4, an undercoat M (4) is formed on the base film (1), then a metal vapor deposited layer (2) is formed, a white top coat layer (5) is provided, and then a Japanese paper layer (6) is formed as necessary. ) is provided. A first-twist type gold and silver thread is produced by slitting such a raw fabric and attaching the white top foot layer or the Japanese paper layer side to the core thread.

The undercoat layer (4) is usually a layer with a thickness of about 0.5 to 2 μm, and a photochromic dye is added to the layer. In addition to the photochromic dye, conventionally used dyes and pigments may be used in combination, if necessary.

The white top coat layer (6) is usually a layer of about 160 to 6 μm, and is made of Nido Tanachi Rubber/Epoxy Tree 111.
/ Urinary i-It is provided by applying a paint paste prepared by adding a white pigment such as TiO2, 5in2 to a paint paste made of melamine resin or acrylic melamine resin, or by laminating a white film formed.

'Providing this layer makes it easier to distinguish between the front and the back when Japanese paper is not provided, and is preferable from the viewpoint of preventing oxidation and increasing the resistance of the vapor-deposited metal film.

The Japanese paper layer (6) provided as necessary on the white top coat layer (6) is made of bulb/mitsumata/manite hemp, etc., and has a basis weight of about 8 to 60 g//n2. It is a layer that prevents changes in the texture of the gold and silver threads and the elongation of the gold and silver threads.

When first-twisted gold and silver threads are manufactured using slits of the original fabric having the above structure, the color tone of the gold and silver threads changes due to the action of the photochromic dye added to the undercoat layer (4). Changes color reversibly.

e) When forming an undercoat layer using a combination of a chromic dye and a conventionally used dye or pigment, as in the case of the top coat layer shown in Fig. 2, as shown in Fig. 5. Then, the undercoat layer was 2NjI (4a
), (4b), one layer may be a layer containing a photochromic dye and the other layer may be a layer containing a conventionally used dye or pigment. When the undercoat layer is formed into two layers in this way, the same effect as in the case of the topcoat layer can be obtained.

FIGS. 6 to 9 show the reversible photoQl of the present invention, respectively.
It is a sectional explanatory view for explaining other embodiments of ivy gold and silver thread.

The actual embodiment shown in FIG. 6 has a structure in which two sheets of which up to the metal vapor deposition layer (2) have been formed are bonded together using adhesive M (7) in the same manner as shown in FIG. 4. It is. It is also possible to apply embossing. With this structure, the gold and silver threads (flat threads) produced will reversibly change color due to the action of photochromic dyes, and will have a colorful luster and texture, and by weaving them, patterns will be created. It has the advantage that embossing and special designs are also possible.

The embodiment shown in FIG. 7 has a structure in which two sheets, in which up to the metal vapor deposition layer (2) have been formed, are pasted together with an adhesive layer (7) in the same manner as shown in FIG. It has the following. With this structure, the manufactured gold and silver thread has the advantages of the gold and silver thread shown in Figure 6, as well as the advantages shown in Figure 5 when the undercoat layer is made of two layers (4a) and (4b). You can also use the effect of chance to wander.

Figure 8 shows that instead of the base film (1), the effect is changed to gold and silver thread with a very good metallic luster and low elongation, which exposes the grain of Japanese paper, unlike the film. It is based on Japanese paper made from pulp/Mitsumaku/Manila hemp, etc., and has a Japanese paper layer (6).
Implementation of the present invention having a structure in which a stop M (8) is provided, an undercoat layer (9) is formed thereon, a metal vapor deposition layer (2) is provided, and a top coat layer (8) is then formed. This shows the mode.

The filler m (8) is formed by a method such as coating a polyester urethane elastomer having an isocyanate bond as a main ingredient on the Japanese paper layer (6) with a surface area of about 16 to 401 m2. The sealing layer (8) is formed for the purpose of providing a sealing effect and luster to the cell sheath fibers forming the base Japanese paper, and has a thickness of 1.0 to 5.
It is preferable that it is about -0 g/m2. Metal vapor deposition M (
In 2), after providing the sealing layer (8), directly applying the sealing layer N (8)
Acrylic-melamine resins and epoxy-urea melamine resins are coated to improve suitability for metal vapor deposition, gloss when used, adhesion and durability of vapor-deposited metals, etc. , an undercoat layer (9) made of epoxy/isocyanate resin, etc. at a rate of 1.0 to 6 g/m
It is preferable to form after forming about two times. On the metal vapor deposited layer (2), a top coat (JM) (8) is provided as in the case shown in FIG. 1, and then the gold and silver thread of the present invention is replaced by slitting. Topco) 7W
(8) in two layers (3at, (
By using the top foot layer consisting of 3b), the same effect as that obtained by using two layers in FIG. 2 can be obtained.

The gold and silver threads having the structure shown in Fig. 8 or 9 may be used as is as a flat thread, or they may be used by pasting two pieces together with the Japanese paper layer side so that the metal vapor deposited layer is visible from both sides. It's okay.

The gold and silver thread of the present invention produced in this way is a product that has been added to the conventionally used gold and silver thread with the property of reversibly changing the color, and is superior to the conventionally used gold and silver thread. It is something that can be used for a specific purpose.

Next, examples of the gold and silver threads of the present invention (which will be explained based on,
The present invention is not limited to these.

Example 1 A polyester film with a thickness of 12 μm was coated with Nido p7ru4/epoxy resin/urea-melamine resin (weight ratio 50
/20/60) FiPT-yellOWfJ 21 and 5F-I (ea$37 (both manufactured by Hodogaya Chemical Industry Co., Ltd.) with ethyl heptarosolp in a paint base containing 100 parts
A solution in which 5 parts and 1 part of
% (headquarters %, hereinafter the same)) to a film thickness of 1.0 μm, and then
It was dried at C. Next, special modification - melamine resin paint (
After gravure coating a solution containing 5 parts of Kayakto Luminous 0-B, a hot mink dye, in a solvent made from Mitsui Toatsu Kagaku Kneepan to a film thickness of 1.0 μm, the temperature was 150°C. It was dried with.゛After that, the film thickness will be 800A by vacuum evaporation method.
Ag was deposited on the sea urchin. Next, for the purpose of preventing oxidation of the vapor deposited layer:
1/8), / Epoxy resin (Mitsui Higashi, Pressure Kagaku ■ EBOKI, #701-4) / Urea-melamine resin (Mitsui Toatsu Kagaku ■ Kneepan $134) / Solid Bunjusha A white paint containing 100 parts of a paint base consisting of a ratio of 50/2o/3o' (solid content 25%) and 60 parts of TiO2 was applied to a film thickness of 1 μm, dried at 160°0, and I got it.

The resulting vapor-deposited film was slit to a width of 3,379 mff and pre-twisted into a single core of silk-rayon (100 denier) to obtain gold thread.

The gold thread that was obtained was shiny, and when exposed to light, it was initially gold in color, but after being exposed to sunlight for about 20 minutes, it turned a bright blue color.The gold thread had a maximum absorption wavelength in the 604 plate. . When the discolored gold thread was left in a dark place or shielded from sunlight, it returned to its original gold color in about 60 minutes.

Example 2 Japanese paper (Japanese paper) was placed on the white paint side of the vapor deposited film obtained in Example 1.
After pasting and embossing the gold and silver thread lined base paper manufactured by Daifuku Paper Manufacturing Co., Ltd., the gold thread was evaluated in the same manner as in Example 1. The gold thread was the same as in Example 1, except that the luster was adjusted to be matte. It had similar properties.

Example 6 Apply eye cream (UD6806-60 manufactured by Tokushima Essential Oil ■) to Japanese paper with a basis weight of 18 to 209/m2 at 59/rn2:) -)
After drying, a layer was formed using a 1.597 m'' primer (thermosetting resin, Eggplant Beer 8P-2504 manufactured by Tokushima Essential Oil ■), and then a layer was vacuum evaporated to a film thickness of 800 λ. Next, for the purpose of preventing oxidation of the vapor deposited layer, Nidoda Shichirutasu (R1/8 manufactured by Nippon Celluloid Co., Ltd.) was applied.
) / 100 parts (solid content 18%) of paint consisting of urea-melamine resin (Mitsui Toatsu Chemical Co., Ltd. Kneepan $134) and a dye (Hodogaya Chemical Co., Ltd. mm SFT-yellow $2)
54 parts and 5pT-nea$37 o, s parts) 4.5
1.0 μm in thickness,
Dry. On top of that, acrylic-melamine resin paint (butylated melamine G-821 manufactured by Dainippon Ink & Chemicals)
A solution consisting of -607 Acrylic A-405) 100 parts, methyl ethyl ketone 100 parts,) luene 100 parts, ethyl acetate 100 parts and Kayakto Luminous O-B jQ parts was applied to form a coating film with a film thickness of 1.2 μm. The obtained vapor-deposited film is pasted on both sides of the foil base paper, and the width is 0.
- I slit it to 378mm and got 2 pieces of gold thread.

The resulting gold thread was shiny, and when exposed to sunlight it initially turned gold, but after about 20 minutes of continued exposure to the light, it turned bright blue. The gold thread had a maximum absorption wavelength at 604rB. When the discolored gold thread was left in a dark place or shielded from sunlight, it returned to its original gold color in about 60 minutes.

[Brief explanation of drawings]

FIGS. 1 to 6 are cross-sectional explanatory views for explaining embodiments of the gold and silver thread of the present invention, and FIGS. 4 to 5 are respectively cross-sectional views for explaining the embodiments of the gold and silver thread of the present invention of the first twist type. 6th cross-sectional explanatory diagram for explaining the structure of the vapor deposited film used for
9 to 9 are cross-sectional explanatory views for explaining other embodiments of the gold and silver thread of the present invention, respectively. (Main symbols in the drawings) (2): Metal vapor deposition layer (8), (3a), (3b):) Tubuko) layer (4),
(4a), (4b) j Undercoat layer Fig. 4 Fig. 26 Off Fig. 8

Claims (1)

[Claims] 1. A reversible photochromic gold and silver thread having a metal vapor deposited layer, characterized in that a resin layer dyed with a photohigh dye is provided on the side where the metal vapor deposited layer is visible.