JP4382964B2 - Hydraulic transfer sheet and manufacturing method thereof - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a hydraulic transfer sheet used for surface decoration of furniture, joinery, vehicles and the like having a curved surface or an uneven surface, and a manufacturing method thereof, and more particularly, to a hydraulic transfer sheet that provides a stable hologram effect on a transfer product and its It relates to a manufacturing method.
[0002]
[Prior art]
As shown in Japanese Patent Publication No. 52-441682, the hydraulic transfer technique prints a pattern on a thin film (film), and floats the thin film on the liquid surface with the printing surface facing up. It is known as a printing technique in which an object is pressed on the surface, all or a part thereof is submerged in the liquid, the pattern is transferred to the object surface by the pressure of the liquid, and then the thin film is removed from the object surface. Further, as disclosed in Japanese Patent Publication No. 57-50547, a printing method for making a thin film water-soluble is also known.
[0003]
Any of the conventional hydraulic transfer sheets is suitable for makeup of an object surface having a complicated outer shape such as a curved surface or an uneven surface. In the hydraulic transfer sheet including the water-soluble thin film (film), the water-soluble film dissolves and disappears in water during transfer, and the sheet of the transparent resin layer and the deposited metal layer covers the surface of the transferred material. Demonstrate the makeup effect. The cosmetic effect is a hologram effect by the embossing applied to the transparent resin layer and the vapor deposition metal layer adjacent to the transparent resin layer, or the hologram effect by the embossing applied to the transparent resin layer and the vapor deposition metal layer adjacent thereto. . In addition to this hologram effect, a decorative effect by printing a pattern is of course added when there is a printed layer.
[0004]
By the way, in order to stably obtain the hologram effect, it is necessary to deposit a metal material under a certain degree of vacuum in a deposition apparatus. However, a water-soluble film that is an indispensable element for a hydraulic transfer sheet has high water absorption, and the degree of vacuum in a vapor deposition apparatus often changes due to moisture contained in the water-soluble film, resulting in uneven deposition. There's a problem. When this deposition unevenness occurs, a desired hologram effect cannot be obtained.
[0005]
[Problems to be solved by the invention]
An object of the present invention is to provide a solution to the above-described problems in the manufacturing process of a hydraulic transfer sheet, by adjusting the moisture contained in the water-soluble film, minimizing the change in the degree of vacuum in the vapor deposition apparatus, The purpose is to ensure the hologram effect by stabilizing.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention has a basic concept of setting the water content of the water-soluble film constituting the hydraulic transfer sheet to a certain value or less. According to the knowledge of the present invention, By setting the moisture content to 7% or less, the hologram effect by the hydraulic transfer sheet can be secured stably.
[0007]
Accordingly, the hydraulic transfer sheet according to the present invention comprises a water-soluble film having a water content of 7% or less, a transparent resin layer on the water-soluble film, and a vapor-deposited metal layer on the transparent resin layer. The transparent resin layer is embossed between the metal layer and the transparent resin layer. A printing layer can be provided between the water-soluble film and the transparent resin layer. The hydraulic transfer sheet according to the present invention comprises a water-soluble film having a water content of 7% or less, a transparent resin layer on the water-soluble film, and a vapor-deposited metal layer on the transparent resin layer. The metal layer has an embossed surface.
Hydraulic transfer sheet. A printing layer can be provided between the water-soluble film and the transparent resin layer.
[0008]
On the other hand, in the method for producing a hydraulic transfer sheet according to the present invention, a transparent resin is formed on a water-soluble film having a water content of 7% or less to form a transparent resin layer, and the surface of the transparent resin layer is embossed. A metal material is deposited on the embossed transparent resin layer to form a deposited metal layer. When a printing layer is provided on a hydraulic transfer sheet, printing is performed on a water-soluble film having a moisture content of 7% or less to form a printing layer, and a transparent resin is applied on the printing layer to form a transparent resin layer. Then, the surface of the transparent resin layer is embossed, and a metal material is vapor-deposited on the embossed transparent resin layer to form a deposited metal layer. Also, the method for producing a hydraulic transfer sheet according to the present invention comprises forming a transparent resin layer by applying a transparent resin on a water-soluble film having a water content of 7% or less, and depositing a metal material on the transparent resin layer. Then, a vapor-deposited metal layer is formed, and the surface of the vapor-deposited metal layer is embossed. Further, when a printing layer is provided on the hydraulic transfer sheet, printing is performed on a water-soluble film having a water content of 7% or less to form a printing layer, and a transparent resin is applied on the printing layer to form a transparent resin layer. And depositing a metal material on the transparent resin layer to form a deposited metal layer, and embossing the surface of the deposited metal layer.
[0009]
Embodiment
As shown in FIG. 1, a hydraulic transfer sheet 10 according to the present invention includes a water-soluble film 12 having a water content of 7% or less, a transparent resin layer 14 on the water-soluble film, and vapor deposition on the transparent resin layer. The transparent resin layer is embossed 18 between the vapor-deposited metal layer and the transparent resin layer. In the hydraulic transfer sheet 10 shown in FIG. 2, a printing layer 20 is formed between the water-soluble film 12 and the transparent resin layer 14.
[0010]
In producing the hydraulic transfer sheet 10, a transparent resin is applied on the water-soluble film 12 having a water content of 7% or less to form a transparent resin layer 14, and the surface of the transparent resin layer is embossed 18; A vapor-deposited metal layer 16 is formed by vapor-depositing a metal material on the embossed transparent resin layer. As shown in FIG. 2, when the printing layer 20 is provided, printing is performed on the water-soluble film 12 to form the printing layer 20, and a transparent resin is applied on the printing layer to form the transparent resin layer 14. Then, the surface of the transparent resin layer is embossed 18, and a metal material is vapor-deposited on the embossed transparent resin layer to form a deposited metal layer 16.
[0011]
As a material for the water-soluble film 12, polyvinyl alcohol (PVA) can be used. Further, as the material of the transparent resin layer 14, a thermoplastic resin, a thermosetting resin, or a radical polymerization resin can be used. Furthermore, as a material of the vapor deposition metal layer 16, heavy metals such as copper and chromium can be used, metal oxides such as aluminum oxide and silicon dioxide can be used, and aluminum can also be used. The thickness of the deposited metal layer 16 can be 150 to 800 mm. Further, the depth of the emboss 18 can be set to 0.5 to 2 μm.
[0012]
Next, in the example shown in FIGS. 3 and 4, the emboss 18 is applied to the deposited metal layer 16. That is, the hydraulic transfer sheet 10 shown in FIG. 3 includes a water-soluble film 10 having a water content of 7% or less, a transparent resin layer 14 on the water-soluble film, and a deposited metal layer 16 on the transparent resin layer. Thus, an emboss 18 is provided on the surface of the deposited metal layer. The hydraulic transfer sheet 10 shown in FIG. 4 has a printing layer 20 between the water-soluble film 10 and the transparent resin layer 14.
[0013]
During production, a transparent resin is applied to the water-soluble film 10 having a water content of 7% or less to form a transparent resin layer 14, and a metal material is vapor-deposited on the transparent resin layer to form a vapor-deposited metal layer 16. The emboss 18 is applied to the surface of the deposited metal layer. When the printing layer 20 is provided, printing is performed on the water-soluble film 10 to form the printing layer 20, and a transparent resin is applied on the printing layer to form the transparent resin layer 14, and the transparent resin layer A metal material is vapor-deposited thereon to form a vapor-deposited metal layer 16, and an emboss 18 is applied to the surface of the vapor-deposited metal layer.
[0014]
3 and 4, polyvinyl alcohol (PVA) can be used as the material of the water-soluble film 12, and the material of the transparent resin layer 14 is thermoplastic resin, thermosetting resin or radical polymerization. Resins can be used, and heavy metals such as copper and chromium can be used. Metal oxides such as aluminum oxide and silicon dioxide can be used, and aluminum can also be used. The thickness of the deposited metal layer 16 can be 150 to 800 mm. Further, the depth of the emboss 18 can be set to 0.5 to 2 μm.
[0015]
(Example)
A printed layer was formed by printing a pattern on a water-soluble film composed of a 30 μm thick PVA film using nitrified cotton / alkyd ink. A transparent resin layer was formed by applying a nitrified cotton / alkyd transparent resin in a thickness of 3 μm on the printed layer. An emboss having a depth of 1 μm was formed on the surface of the transparent resin layer using an embossing roller. Furthermore, aluminum was vapor-deposited on the transparent resin layer to form a vapor-deposited metal layer having a thickness of 350 mm, thereby obtaining a hydraulic transfer sheet having the configuration shown in FIG. When this hydraulic transfer sheet was used to perform hydraulic transfer on an ABS molded product, it was possible to observe a strong interference color hologram pattern in which the printed pattern and the hologram effect interacted with each other.
[Brief description of the drawings]
FIG. 1 is a partial cross-sectional view of a hydraulic transfer sheet according to one embodiment of the present invention.
FIG. 2 is a partial cross-sectional view of a hydraulic transfer sheet according to another embodiment of the present invention.
FIG. 3 is a partial cross-sectional view of a hydraulic transfer sheet according to another embodiment of the present invention.
FIG. 4 is a partial cross-sectional view of a hydraulic transfer sheet according to still another embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Hydraulic transfer sheet 12 Water-soluble sheet 14 Transparent resin sheet 16 Deposition metal layer 18 Emboss 20 Print layer

Claims (8)

  A water-soluble film having a water content of 7% or less, a transparent resin layer on the water-soluble film, and a vapor-deposited metal layer on the transparent resin layer, between the vapor-deposited metal layer and the transparent resin layer A hydraulic transfer sheet, wherein the transparent resin layer is embossed.   The hydraulic transfer sheet according to claim 1, comprising a printing layer between the water-soluble film and the transparent resin layer.   The hydraulic transfer sheet according to claim 1 or 2, wherein the material of the transparent resin layer is a thermoplastic resin, a thermosetting resin, or a radical polymerization resin.   The hydraulic transfer sheet according to claim 1 or 2, wherein a material of the vapor deposition metal layer is a heavy metal such as copper or chromium, a metal oxide such as aluminum oxide or silicon dioxide, or aluminum.   The hydraulic transfer sheet according to claim 1, 2 or 5, wherein the vapor-deposited metal layer has a thickness of 150 to 800 mm.   The hydraulic transfer sheet according to claim 1 or 2, wherein a depth of the emboss is 0.5 to 2 µm.   A transparent resin is applied on a water-soluble film having a water content of 7% or less to form a transparent resin layer, embossed on the surface of the transparent resin layer, and a metal material is applied on the embossed transparent resin layer. A method for producing a hydraulic transfer sheet, wherein vapor deposition is performed to form a deposited metal layer.   Printing is performed on a water-soluble film having a moisture content of 7% or less to form a printing layer, a transparent resin is applied on the printing layer to form a transparent resin layer, and embossing is applied to the surface of the transparent resin layer. A method for producing a hydraulic transfer sheet, comprising: depositing a metal material on the embossed transparent resin layer to form a deposited metal layer.

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