JPS60244591A - Transfer sheet - Google Patents

Abstract

PURPOSE:To easily form a thin metal layer to a material high in water content such as a cellulose material or a molded product having unevenness, by using a transfer sheet wherein bonding strength of the thin metal layer to a support layer is weakened in the presence of a smoothing substance. CONSTITUTION:To the surface of a support layer or a high-molecular polymer layer formed of 100% of a silicone or fluorine type smoothing substance or a mixture of said smoothing substance and other high-molecular polymer, the film comprising said smoothing substance is formed and a thin metal layer is laminated to thus formed support by a vacuum vapor deposition method or a sputtering method to adjust the bonding strength between said support and the thin metal layer to 0.1-0.3kg/in, pref., 0.2-0.25kg/in.

Description

[Detailed description of the invention] <Industrial application field> The present invention relates to a metal thin layer transfer sheet.

(Conventional technology) Conventionally, fabrics and films containing thin metal ink have been manufactured using vacuum evaporation methods, suba-tuttering processing methods, etc. However, these methods require high vacuum, so Items with high water content 1 For example, cellulose materials and 2m
Materials that easily contain moisture, such as fabrics, non-woven fabrics, etc., generate outgas, lowering the degree of vacuum, and preventing the formation of a uniform thin metal layer. Particularly in knitted fabrics, winding I41/v tension is applied during processing, resulting in selvage and the selvedges not being metal-deposited. This problem would disappear if a positive feed device was installed and processing could be performed without tension, but since there are few processing machines equipped with a positive feed device, it is currently virtually impossible to process thin metal layers on highly elongated fabrics. Therefore, this method can only impart metal thinness (transfer) to fabrics, even if they are woven or knitted fabrics with low elongation, and are limited to a part of the R-knit fabric, and the material is polyester, etc., which has the highest moisture content. It is limited to those that do not absorb bacteria.

On the other hand, a widely known method is to transfer various designs mainly made of pigments onto fabrics and textile products using a transfer sheet. This method is a so-called copying process, and the transfer sheet is usually printed by pressing it onto the object and heating it.
will be carried out.

By applying this method of using a transfer sheet, it is possible to apply a thin metal film to the surface of an object, regardless of the type of material, elongation, and other physical properties of the object to be transferred, as well as its shape. But a transfer sheet? Various problems arise when a thin metal layer is transferred to an object such as a cloth or a textile product using the above method.

That is, the production of a transfer sheet having a thin metal rattan.

In order to uniformly form a thin metal layer on the support layer, vacuum deposition or sputtering is usually used. Since the transfer sheet is formed using this simple method, the adhesive strength between the support layer and the thin metal layer is high. Therefore, when transferring to the surface of an object using this type of transfer sheet, the thin metal layer cannot be peeled off properly from the support layer, and as a result, the thin metal layer cannot be transferred uniformly. Of course, it is possible to solve the above problem by using a stronger adhesive or a large amount of adhesive between the object and the thin metal layer, but this method of using the adhesive is not suitable for the object. Is it undesirable that adhesive remains on certain fabrics or textile products, and do I need to take special precautions during transfer work? Unfavorable because you have to pay for it, therefore the current transfer sheet? At present, the application of a thin metal layer to the surface of a fabric or textile product is rarely employed.

<Problems to be Solved by the Invention> The present invention has a uniform metal thin layer formed thereon, and can easily form metal thin layer noise on the surface of materials with high water content such as cellulose materials and molded products with irregularities. An object of the present invention is to provide a transfer sheet that can be formed.

<Means for Solving the Problems> The object of the present invention is to provide a transfer sheet comprising a support layer and a thin metal layer, wherein the support layer is formed of a high molecular weight polymer, and at least the support is made of a metal. The partial molecule that joins the thin layer (
9. Smooth material is created. Thereby, the adhesive strength of the thin metal layer to the support layer is achieved in the transfer sheet in a range of 0.1 to 0-3 k7/in.

Various configurations can be used as the support layer in which a smooth material is included in the portion of the support layer to which the metal thin@VC is bonded. The first problem is that even if the support is made of 100% silicon-based or fluorine-based smooth material, the support may be made of a mixture of silicon-based or fluorine-based smooth material and other high molecular weight polymers. Furthermore, the supporting layer may be formed from a smooth material film formed on the side of the polymer and the thin metal layer of the # layer that are bonded to each other.

It is sufficient that the adhesive strength of the thin metal 1 to the support layer is weakened by smoothing the portion of the support 1t-2 to the thin metal layer with a smoothing substance. The adhesion strength of the metal thin layer to the support layer in a conventionally known transfer sheet is 0.0.
It is about 40 to 0.60 kr/in. The adhesive strength of the transfer sheet according to the present invention is set smaller than this. If the adhesion strength of the layer is extremely low, the metal W4 layer is likely to fall off before being transferred to the object, making it impossible to perform uniform transfer. Therefore, as a result of various studies on the above points, wood inventors etc. found that the adhesive strength was 0.1 to 0.3k.
p/in, more preferably 0.2-0.25 ky
/in, it has been found that a uniform metal thin film can be easily transferred onto the surface of an object.

The specific structure of the transfer sheet of the present invention will be explained below with reference to the vagina.

Figure 1 shows a side sectional view of an embodiment of the transfer sheet of the present invention. As shown in No. .

The support layer used in the present invention is particularly a polyurethane polymer or a polyacrylic acid ester polymer.

Polyamide-based polymers: Polyester-based polymers, polyethylene-based polymers, polypropylene-based polymers, polyvinyl chloride-based polymers, polyvinylidene chloride-based polymers, boria... elementary polymers, silicone-based polymers, etc. A film-like material containing 50 wt % of -a or two or more of these polymers is preferred, and the thickness is not particularly limited, but is preferably 5 to 50 microns. These polymer films can be manufactured according to hunting methods, such as a knife coater.

V is manufactured by coating a release paper on a roll coater or the like, or by a melt extrusion method.

The metal of the metal thin layer in the present invention is not particularly limited, and all metals such as aluminum, tin, nickel, silver, magnesium, chromium, copper, etc. and metal compounds thereof can be used. 11 pieces.

The method of laminating the metal layer on the support is to deposit the metal on the polymer layer in a vacuum (by the calendar method or sputtering method).
It is easy to layer and allows for uniform deposition of thin metal layers. When laminating metal by vacuum evaporation method or sputtering processing method, the thickness is not particularly limited to V, but 10
0 to 5000A is preferable, and more preferably 300 to 100OA
is more preferable.

When laminating a thin metal layer on a support layer, that is, during vacuum deposition or sputtering processing, support 1. Preferably, if the polymer film is easily stretchable such as polyurethane, or if the film is thin and easy to cut, it is preferable to process it together with the comb and reinforcing sheet. For example, in the case of polyurethane film, release paper.

Alternatively, if a polyurethane polymer T is coated on the release film and, after sufficient drying, the release paper or release film is fed into a processing machine, there is no need to worry about the effects of elongation or cutting.

In order to reduce the adhesion strength between the support 1 and the metal thin layer, use the above-mentioned ↓ smooth material such as silicone-based or fluorine-based material kloO.
% or mixed with other polymers to form a support or silicone-based on top of the support layer.

)・It is best to form skin with substances of the so-type. When a silicone-based difluorine-based smooth substance is mixed with a polymer, the silicone may be a silicone-based polymer such as silicone rubber,
A polymer layer is formed by mixing a silicone water repellent such as silicone oil, a fluorine-based polymer such as polyvinylidene fluoride, and a fluorine water repellent with a solid content of 5wt4 or more into a polymer. .

At this time, as the proportion of silicon and fluorine increases, it is possible to reduce the adhesive strength. Also, when forming a silicone-based or fluorine-based film on the dipolymer @q, silicone such as silicone rubber, silicone oil, silicone water repellent, etc.
Fluorine, such as polyvinylidene fluoride or a fluorine-based water repellent, can be applied to a polymer layer by coating, impregnating, spraying, etc. to form a film on the polymer. After performing the above-described treatments, a thin metal layer is laminated using the vacuum evaporation method described above. In this case, add silicon or fluorine! : The adhesive strength of the supporting layer and Kinshiki Usumei is 0.
If the amount is set to 1 to 0.3 kg/in, a transfer sheet can be produced in which the thin metal layer can be transferred easily and uniformly. Incidentally, as a smoothing agent, it is preferable to use a silicone-based smoothing agent because the amount added is small and the cost is low.

In the present invention, the adhesive strength between the support layer and the metal thin film is measured by the following method.

On the thin metal layer side of the transfer sheet, apply Bo II Co. product number #2.
805 adhesive tape@temperature 130℃, pressure 2009/d
Glue with. Next, the transfer sheet and the adhesive tape were pulled at M10 cm/min using a Tensilon tensile tester, and the average adhesive strength was measured at 6 points, 3 points for the maximum strength and 3 points for the minimum strength of Chart-F.

Methods of transferring the transfer sheet of the present invention to objects to be transferred such as thin metal sheets and cloth, and methods of transferring it to three-dimensional molded objects include a method using a solvent-based adhesive and a method using a low melting point resin. An example of the bonding method is as follows.

(a) How to use adhesive on fabric and film, or on transfer sheet? It is coated in dots, lines or on the entire surface, and after semi-drying, both are hot pressed using a hot roller or the like to peel off the support layer and a thin metal Wt is transferred.

(b) Low melting point resin? How to use Dots of low melting point resin with a melting point of 100-150°C.

Form it into a line or sheet and heat press it using a fabric, a transfer sheet, and a hot metal roller to transfer the thin metal layer.

(a) Method using adhesive: Apply a rubber-based or cyanoacrylate-based adhesive to the molded product, attach a transfer sheet, and peel off the support layer after sufficient adhesion.

(b) How to use low melting point resin Sheet-like material of low melting point resin? , Cut it to fit the shape of the molded product, place it in close contact with the transfer sheet H, and heat press it with an iron or the like to transfer it.

Next, the mode of transfer depending on the surface condition of the object to be transferred will be explained.

As shown in FIG. 2, the object 5 to which the thin metal layer is to be transferred has irregularities, and therefore the adhesive layer 4 applied thereon has irregularities.
If the transfer sheet having three non-stretchable support layers is brought into contact with the object 5 when there are irregularities, the thin metal layer 2 will come into contact only with the convex portions of the adhesive layer 4, and the thin metal layer 2 will come into contact with only the convex portions of the adhesive layer 4, and the thin metal layer 2 will contact only the convex portions of the adhesive layer 4. -Do not come into contact with. Therefore, as shown in FIG. 3, after the support layer 3 is peeled off.

The transferred object has the thin metal layer 2 only on the convex portions of the adhesive layer 4. Therefore, if a transfer sheet with a stretchable support 1f made of polyurethane or the like is used as a support layer, the support layer 6 will have elasticity even if the adhesive 94 has unevenness, as shown in Figure 4'-f'. Therefore, if the press pressure is slightly reduced during bonding, the support@6 will be compressed to follow the unevenness of the adhesive 4. As a result, Fig. 1\#2 is also transferred to the adhesive 4 following the unevenness, so that 1kl of metal thin film can be transferred over the entire surface of the object to be transferred. Of course, such a phenomenon is
The way the adhesive enters the recesses varies depending on the film thickness and elongation rate of Support@1, and the press pressure during adhesion, but the elongation rate of the support layer is 50%/2 and liU! If the thickness is 7 μm or more, it will relatively easily follow the shape of the KHH adhesive recess.

When laminating a metal layer on fabrics such as woven or knitted fabrics with ridges or unevenness as an application of μyo's L-like technology, in order to laminate a thin metal layer only on the ridges or uneven peaks, it is necessary to have a low melting point. Using a resin film, apply 8 layers to a fabric that has ridges and unevenness, and then apply the blind spots and unevenness of the fabric to the low melting point resin film. 7 to transfer the metal thin layer.

A 1 meter long transfer is created with a thin metal layer laminated only on the ridges of the adhesive and on the peaks of the uneven parts. At this time, if a stretchable transfer sheet is used to transfer the metal thin material to the support layer, the thin metal material will also have irregularities and a three-dimensional transferred object. Even if the fabric is rough or uneven, a flat metal thin layer can be obtained by coating a transfer sheet with a non-stretchable support with an adhesive, semi-drying it, then laminating the fabric twice. Also.

By arranging the adhesive discontinuously, such as in dots, it is possible to produce a partial transfer product in which a thin metal layer is laminated only on the area where the adhesive is present.

<Examples> Next, several examples of the transfer sheet according to the present invention will be described in detail below.

The transfer sheets obtained in the examples were evaluated based on the adhesive strength between the support and the metal thin base and the transfer state.

Here, the transfer state was evaluated fE by visually determining whether the metal m layer was completely peeled off from the support layer using the following symbols.

○: The thin metal layer was completely removed from the support layer.

Δ...The metal thin layer partially remains on the support.

×...Most of the thin metal layer remains on the support layer.
The material to be transferred used for transfer was a nylon-66 fabric.
A measurement sample was obtained by using a sheet coated with a poly-11 amide low melting point resin sheet of 0 μm and transferring the thin metal sheet of the transfer sheet to the entire surface of the nylon-66 carpet by hot pressing with a hot roller.

Implementation VA11, 2.3 Work 4 and Comparative Example 11.2 Four types of transfer sheets (implementation group jl, 2) were prepared under the following conditions, respectively.
, 3 and 4) were made.

○ Manufacturing conditions for the transfer sheet in Example 9'l11 Release paper contains polyurethane 90 vrtTo and silicone rubber 10 wt%.
Coat with a solution formulated with ``dry coagulation'' and trap. The film thickness was 7 μm, and the release paper was put into a vacuum deposition machine and aluminum was vacuum deposited on the bipolymer side. As a result, a transfer sheet with an aluminum mesh of 50 OA could be manufactured.

O implementation fI! Conditions for manufacturing transfer sheet No. 2 A release paper was coated with polyvinylidene fluoride solution 1' and wet solidified.

The film thickness was 20μ, and after sufficiently drying with release paper, it was put into a vacuum deposition machine and deposited with aluminum T3OOX glue.

○ Manufacturing conditions of the transfer sheet of Example 13 A 20 μm polyester film was siliconized, put into a vacuum deposition machine, and deposited to a film thickness of aluminum v'y A2400x.

O Example) Manufacturing conditions for the transfer sheet in 4 Release paper was mixed with 95 wt% polyacrylic acid ester and 5 wt% silicone rubber, and a 7C solution was used. Coated and dry solidified. The film thickness was 10 μm, and the film was put into a vacuum deposition machine together with a release paper, and aluminum was laminated to a film thickness of 160×.

In addition, two types of comparison homophones are prepared, and Comparative Example 1 is Example 11
Comparative Example 2 is the same as Example 13, but aluminum gold was vacuum-deposited on the polyester film without silicone treatment.

Support layer and metal thin layer of transfer sheet of each example and comparative example
The adhesion strength and transfer state were evaluated, and the results are shown in Table 1.

It is clear that although Table 1 is large and transfer of the metal thin film 1 is not possible, the transfer sheets of each example of the present invention can perfectly transfer the metal thin film.

Example 5 Compounding of silicone rubber in Example 1? A modified version was prepared, and the adhesion strength and transfer state between the support I brass and the gold wire thin film were evaluated, and the results are shown in Table 2.

From Table 2 @Table 2, if the amount of silicone rubber is increased and the adhesive strength between the support layer and the metal thin layer 1- is -0.3 kg/in or less, the gold FAa 1 can be completely transferred.

It has been proven that the higher the mixing ratio of silicone rubber, the more the rice grains can be peeled off from the supporting layer. <Effects of the Invention> When used in the transfer sheet of the present invention, fabrics such as knitted fabrics, non-woven fabrics, and films Of course, it is easy to laminate 1ψ metal thin to knitted fabrics with high elongation, cellulose materials with a lot of water retention, fabrics containing water, and film hats, and it can also be used to form tassels or shaped objects like a standing tree. Lamination of thin metal layers is possible.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional side view of the transfer sheet of the present invention, and Fig. 2 shows a transfer sheet with a non-stretchable support layer adhered to an object to be transferred with an uneven adhesive. Figure 3 is a cross-sectional side view showing a trapped state after the transfer is completed in Figure 2, and Figure 4 is a side sectional view showing a trapped state. FIG. 5 is a side sectional view showing a state in which the sheet is in contact with an adhesive having unevenness; FIG.

Claims (1)

[Claims] 1. A transfer sheet comprising a support layer and a thin metal layer,
The support layer is formed of a high molecular weight polymer, and at least a portion of the support layer that is bonded to the metal thin layer is coated with a smooth substance, so that the adhesion strength between the support layer and the metal pA thin layer is zero. A transfer sheet having a total weight of .1 to 0.3 kg/in. 2. The support layer is a silicon-based or fluorine-based smooth material 1
The transfer sheet according to claim 1, which is formed of 00゜. 3. The transfer sheet according to claim 1, wherein the support is formed by mixing a silicone-based or fluorine-based smooth material with another high molecular weight polymer. 4. The transfer sheet according to claim 1, wherein the support is formed on the side of the cylindrical polymer layer and the thin metal layer of the backing, and is formed of a smooth material film.