JPH11300888A - Polyurethane sheet having metallic sheen of hairline appearance - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate blushing of a transfer foil caused by a solvent, cracks of the transfer foil generated by laminating and obscuring of metallic sheen of hairline appearance, and improve the metallic sheen of hairline appearance by applying a hairline processing on a surface of a polyurethane film, and forming a metal-deposited film thereon. SOLUTION: A hairline processing is applied on a surface of a polyurethane film 2, and a metal-deposited layer 4 is formed thereon. That is, the polyurethane film is used for applying the hairline processing on the surface, and the metal-deposited layer 4 is formed thereon. Alternatingly, the polyurethane film 2 is formed on the surface of the substrate film 1, next the hairline processing is applied on the surface, the metal-deposited layer 4 is formed thereon, and the substrate film 1 is released. In the latter case, a forming method of the polyurethane film is not specially limited, but melt extrusion is preferable. A polyester film, specifically a film having 25-100 μm thickness, is preferable for the substrate film 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hairline tone metallic glossy polyurethane sheet, and more particularly to a hairline tone metallic glossy polyurethane sheet obtained by subjecting a polyurethane film to a hairline process on the same surface and providing a metal deposition layer thereon.

[0002]

2. Description of the Related Art Polyurethane films obtained by vapor-depositing metal on polyurethane films are widely used as decorative materials in clothing patches and marking films.

However, when a hairline-like metallic luster is required, a method has conventionally been known in which a hairline-like transfer foil is transferred to a support and then a polyurethane film is bonded to the surface thereof. However, in the hairline tone transfer foil obtained by this method, since an adhesive is used in the step of bonding the polyurethane film, the solvent dissolves the surface resin of the transfer foil to whiten or transfer by pressing pressure in the bonding processing. There is a disadvantage that the foil is broken. or,
Since the polyurethane film is bonded on the transfer foil via an adhesive, there is also a disadvantage that the hairline-like metallic luster is dull.

As another method, there is a method in which a hair line is formed on the surface of a polyurethane film. However, in this case as well, there is a drawback in that ink is blurred due to a hair line groove when printing on the surface.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the occurrence of whitening of a transfer foil due to a solvent as in the case of using a transfer foil, cracking of the transfer foil due to bonding and dulling of a hairline-like metallic luster. Another object of the present invention is to provide a novel hairline metallic glossy polyurethane sheet having excellent hairline metallic gloss.

[0006]

As a result of intensive studies by the present inventors, the above object of the present invention has been industrially advantageously achieved by the following present invention.

[1] A hairline-like metallic glossy polyurethane sheet obtained by subjecting a polyurethane film surface to a hairline process and forming a metal deposition layer thereon.

[2] The hairline-like metal-deposited polyurethane sheet according to [1], wherein the depth of the hairline groove in the hairline processing is 1 to 10 μm.

[3] The metal of the metal deposition layer is aluminum,
The hairline tone metallic glossy polyurethane sheet according to the above [1] or [2], which is selected from chromium, nickel chromium, and copper.

[4] The average thickness of the metal deposition layer is 10 to 1
The hairline tone metallic glossy polyurethane sheet according to any one of the above [1] to [3], wherein the thickness is 00 nm.

[5] The thickness of the polyurethane film is 10 to 10
The hairline tone metallic glossy polyurethane sheet according to any one of the above [1] to [4], wherein the thickness is 0 μm.

[6] The hairline tone metallic glossy polyurethane sheet according to any one of the above [1] to [5], wherein the surface of the polyurethane film on which no metal vapor deposition layer is provided is smooth.

[7] The hairline-tone metallic glossy polyurethane sheet according to any one of the above-mentioned [1] to [6], wherein a support film is laminated on the surface of the polyurethane film of the polyurethane film having no metal deposition layer. .

[8] The hairline-tone metallic glossy polyurethane sheet according to the above [7], wherein the support film is a polyester film having a thickness of 25 to 100 μm.

The most important feature of the present invention is that a hairline process, preferably a hairline groove depth of 1 to 10 μm is formed on the surface of the polyurethane film, and a metal deposition layer having an average film thickness of preferably 10 to 100 nm is further formed thereon. (Aluminum, chromium, nickel chromium, copper), a new hairline-like metallic glossy polyurethane sheet with excellent hairline-like metallic gloss without dulling of hairline-like metallic gloss. is there.

[0016]

Next, the present invention will be described in detail.

In the present invention, the polyurethane constituting the polyurethane film is not particularly limited.

According to the present invention, on the surface of the polyurethane film,
There are roughly two methods for obtaining a hairline-like metallic glossy polyurethane sheet obtained by applying a hairline process and forming a metal deposition layer thereon.
One method is to use a polyurethane film, apply a hairline process to this surface, and form a metal deposition layer thereon, and the other method is to use a support film, and use a support film. In this method, a polyurethane film is formed, a hairline process is performed on the surface thereof, a metal deposition layer is formed thereon, and the supporting film is peeled off. In the latter case, the method of forming the polyurethane film is not particularly limited, but a melt extrusion method is preferred. As the supporting film, a polyester film is preferable, and a film having a thickness of 25 to 100 μm is particularly preferable.

The hairline processing on the polyurethane film in the present invention is performed so that the hairline groove depth on the polyurethane film surface is usually 1 to 10 μm. The metal deposited on the hairline is not particularly limited, but aluminum, chromium, nickel chromium, and copper are preferably used. The vapor deposition method is not particularly limited, but a vacuum vapor deposition method, an ion plating method, a sputtering method, an ion beam method, or the like is used. The average thickness of the metal deposition layer is usually 10 to 100 nm.

In the present invention, it is preferable that the surface of the polyurethane film having no metal deposition layer is smooth. this is,
A typical example of the method for using the hairline-tone metallic glossy polyurethane sheet of the present invention is a method in which the surface of the polyurethane film having no metal vapor-deposited layer is used as a surface. That is, it is to prevent the ink from bleeding.

[0021]

The present invention will be described below in more detail with reference to examples and comparative examples.

Example 1 Example 1 of the present invention will be described with reference to the drawings. FIG. 1 shows a supporting film having a thickness of 75 mm.
A 50 μm thick polyurethane film is formed on a μm polyester film by a melt extrusion method. Then, a hairline process having an average hairline groove depth of 3 μm was applied to the surface of the polyurethane film, and 700 nm of aluminum was deposited thereon by a vacuum deposition method.

Example 2 The "hairline-like metallic glossy polyurethane sheet" formed in Example 1 was used as a decorative material for clothing patches.
Example 2 will be described with reference to the drawings. FIG. 2 shows that a “100 μm-thick polyurethane film is laminated via a polyurethane-based adhesive to the aluminum-deposited surface of the“ hairline-like metallic glossy polyurethane sheet ”formed in Example 1. did. 75μ which is the support film after lamination
After the m-polyester film was peeled off and removed, it could be used as an emblem material for clothing by welding. The reason for laminating the polyurethane film of 100 μm is that the polyurethane film is used as a decorative material for clothing and has dry cleaning resistance.

Further, since the surface layer, which is a feature of the present invention, is smooth, when printed on the surface, it is possible to obtain good hairline-like metallic luster without ink bleeding.

Example 3 The "hairline-like metallic glossy polyurethane sheet" formed in Example 1 was used as a marking sheet (label, sticker) for display.

The third embodiment will be described with reference to the drawings.
In Example 3, a release paper was attached to the aluminum vapor-deposited surface of the “hairline-like metallic glossy polyurethane sheet” formed in Example 3 as an adhesive layer coated with an acrylic adhesive on average at 3 μm. When used as a marking sheet for display, it can be shaped by free cutting. In addition, since the surface layer, which is a feature of the present invention, is smooth, when printed on the surface, a good hairline-like metallic luster can be obtained without ink bleeding.

Comparative Example 1 A comparative example 1 of the present invention will be described with reference to the drawings. FIG. 4 shows a case where a hairline layer is exposed on the surface for use as an emblem for clothing as a decorative material requiring a hairline-like metallic luster. . There is a hairline layer on the surface of the 50 μm polyurethane film, and there is an aluminum deposition film inside the polyurethane film. A 100 μm-thick polyurethane film was laminated on the aluminum deposition surface via a polyurethane-based adhesive. In this case, since the hairline layer is exposed on the surface layer, when printing is performed on the surface, the ink bleeds due to the hairline groove.

Comparative Example 2 Comparative Example 2 of the present invention will be described with reference to the drawings. FIG. 5 shows a support having a thickness of 100 μm.
After transferring the hairline-like aluminum vapor-deposited transfer foil to the polyurethane film via an adhesive, the thickness is 50μ
m of polyurethane film was laminated with a polyurethane adhesive. In this case, since the adhesive is used in the step of laminating the 100 μm polyurethane film, the solvent dissolves the surface resin of the transfer foil, and the transfer foil is cracked by the pressing pressure in the laminating process.
In addition, when a polyurethane film is laminated on the transfer foil, there is a disadvantage that the hairline tone metallic luster is dull due to the use of an adhesive.

Table 1 summarizes the evaluation results of the characteristics of Examples 2 and 3 and Comparative Examples 1 and 2.

[0030]

[Table 1] As is clear from Table 1, the hairline-tone metallic glossy polyurethane sheets obtained in Examples 1 to 3 had no ink bleeding during printing due to the smooth surface layer (polyurethane film). The result was up.

[0031]

According to the present invention, a hairline is formed on a polyurethane film, and a metal deposition layer is formed on the polyurethane film in order, so that when the surface opposite to the processed surface is used as an actual surface layer, the surface is smooth. In addition, characteristics having good hairline-like metallic luster can be obtained.

Further, since the hairline processed surface is not exposed on the surface of the polyurethane layer and is smooth, the ink does not bleed when printed. Therefore, the present invention is particularly effective for vapor deposition materials (emblems, marking sheets) for decoration and display which require a hairline-like metallic luster.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view in the thickness direction of a hairline tone metallic glossy polyurethane sheet of the present invention.

FIG. 2 is a cross-sectional view in the thickness direction of a laminate obtained by laminating a urethane film for use as a material for clothing of the hairline-like metallic glossy polyurethane sheet of the present invention.

FIG. 3 is a cross-sectional view in the thickness direction of a hairline-tone metallic glossy polyurethane sheet of the present invention provided with an adhesive layer for use as a display marking sheet.

FIG. 4 is a cross-sectional view in a thickness direction of a configuration in which a hairline layer is exposed on the surface as an emblem material for clothing.

FIG. 5 is a cross-sectional view in the thickness direction of a product using a transfer foil as an emblem material for clothing.

[Explanation of symbols]

 1:75 μm polyester film 2:50 μm polyurethane film 3: hairline groove 4: aluminum deposition film 5: adhesive layer 6: 100 μm poly elethan film 7: release paper 8: hairline tone transfer foil 9:50 μm polyurethane film

Claims (8)

[Claims] 1. A hairline-like metallic glossy polyurethane sheet obtained by subjecting a polyurethane film surface to a hairline process and forming a metal deposition layer thereon. 2. The metal-deposited polyurethane sheet according to claim 1, wherein the depth of the hairline groove in the hairline processing is 1 to 10 μm. 3. The hairline tone metallic glossy polyurethane sheet according to claim 1, wherein the metal of the metal deposition layer is selected from aluminum, chromium, nickel chromium, and copper. 4. An average film thickness of the metal deposition layer is 10 to 100 n.
The hairline tone metallic glossy polyurethane sheet according to any one of claims 1 to 3, wherein m is m. 5. A polyurethane film having a thickness of 10 to 100 μm.
The hairline-like metallic glossy polyurethane sheet according to any one of claims 1 to 4, wherein 6. The hairline-like metallic glossy polyurethane sheet according to claim 1, wherein the surface of the polyurethane film on which the metal deposition layer is not provided is smooth. 7. A hairline-like metallic glossy polyurethane sheet according to claim 1, wherein a support film is laminated on the surface of the polyurethane film of the hairline-like metallic glossy polyurethane sheet where the metal deposition layer is not provided. 8. The hairline tone metallic glossy polyurethane sheet according to claim 7, wherein the support film is a polyester film having a thickness of 25 to 100 μm.