KR20180064024A - Gradation decoration film and manufacturing method thereof - Google Patents

Abstract

Disclosed is a gradation decorative film which creates gradation effects and has metallic texture in pastel color by directly forming a gradation layer with semitransparent color ink. Moreover, disclosed is a production method thereof. According to an embodiment of the present invention, the method for producing the gradation decorative film comprises the following steps: preparing a gradation film by printing a semitransparent color gradation layer on one side of a film member; forming an adhesive layer on a surface on which the semitransparent color gradation layer is formed; slitting the gradation film in predetermined size to make the gradation film in a sheet form; forming an ultraviolet (UV) molding layer on the other side of the film member; forming a deposition layer on the UV molding layer; and forming a color printed layer on the deposition layer.

Description

TECHNICAL FIELD [0001] The present invention relates to a gradient decorative film and a method of manufacturing the gradient decorative film.

Embodiments of the present invention relate to a gradient decorative film and a manufacturing method thereof.

With the development of wireless communication technology, mobile phones have become smaller and complicated, and accordingly, not only electrical characteristics but also mechanical characteristics are required to have high reliability.

Mobile devices such as electronic devices, especially smart phones, are being developed at a high speed. Portability is one of the most important features in such mobile devices, and efforts to pursue miniaturization, lightweight, slimmer, etc. are continuing. In addition, the functions of smart phones are becoming more diverse than the functions inherent in mobile phones. With the diversification of these functions, the IT technology integrated in the smart phone itself is complex and the product unit price is high .

On the other hand, in electronic devices using glass, there is a growing interest in effects of forming various appearance aesthetics that can be realized through a glass, and development of a decorative film for a glass (or a deco film thereof) It is actively being done.

For example, it is possible to form an appearance aesthetic effect that emphasizes a metal texture or a three-dimensional shape through a glass. If possible, a method for improving productivity while improving productivity through low cost and simple process is needed.

In the case of conventional decorative films for glass, a silk screen method was used to print UV-molding, deposition, and color ink on a film coated with an adhesive.

According to such a conventional method, it is practically impossible to realize a gradation effect that is limited in design implementation and widely used as a decorative aesthetic. In addition, since the last visible color is realized by multi-deposition color, there is a problem in that the color change is severe due to the variation of the deposition thickness, and the color to be implemented is limited. In addition, there is a problem that the deposition cost is increased due to the lowering of the deposition efficiency.

A prior art related to the present invention is Korean Patent Laid-Open Publication No. 10-2013-0012474 (published on March 23, 2013), which discloses a method of manufacturing a decorative film for glass attachment.

It is an object of the present invention to provide a gradient decorative film which can realize a gradation effect on a decorative film for a glass, thereby realizing a differentiated and beautiful design than the conventional gradient decorative film and a manufacturing method thereof.

Another object of the present invention is to provide a gradation decorative film which can realize an effect that can not be realized through silk screen printing by gravure printing and a method of manufacturing the same

Another object of the present invention is to provide a gradation decorative film and a method of manufacturing the same that can solve various problems caused by printing a gradation layer and a semitransparent color ink layer by double printing by directly printing a gradation layer with translucent color ink .

The problems to be solved by the present invention are not limited to the above-mentioned problem (s), and other problems not mentioned here will be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a method of manufacturing a film, comprising: (a) preparing a gradation film by printing a translucent color gradation layer on one side of a film member; (b) forming an adhesive layer on a surface of the translucent color gradation layer; (c) providing the gradation film in a sheet form by slitting the gradation film to a predetermined size; (d) forming a UV molding layer on the other side of the film member; (e) forming a vapor deposition layer on the UV molding layer; And (f) forming a color print layer on the deposition layer; A method of manufacturing a gradient decorative film may be provided.

Preferably, the step (a) includes: (a-1) forming the translucent color gradation layer by a gravure printing method using translucent color ink on one side of the film member.

(A-2) forming a first primer coating layer on the surface on which the semitransparent color gradation layer is formed; And (a-3) forming a second primer coating layer on the other surface of the film member which is the opposite surface on which the translucent color gradation layer is formed.

In this case, in the step (a-1), the film member may be made of a PET material.

In the step (a-1), the semitransparent color gradation layer may be halftone printed so as to have a predetermined gradation shape. Preferably, the size of the halftone mesh is within the range of 80 to 450, but is not limited thereto.

Also, in the step (a-1), the translucent color gradation layer may be printed with a tint or a halftone.

In addition, in the step (a-2), the first primer coating layer may have a function of enhancing the adhesive strength between the adhesive layer and the adhesive layer.

Further, in the step (a-3), the second primer coating layer may have a function of enhancing an interlaminar adhesion strength with the UV molding layer.

Further, in the step (a), the gradation film may be stored in a roll form.

Also, in the step (b), the adhesive layer may be coated on the gradation film.

Also, in the step (b), the gradation film, which is coated with the adhesive layer and then stored in the form of a roll, may be slit into a size required for the silk printing process through the step (c) have.

In addition, in the step (d), the UV molding layer may have a setting pattern, and the setting pattern may include at least one shape of a spin, a lenticular, a hairline, have.

Further, in the step (e), the deposition layer may have a single deposition color. That is, the deposition layer in the step (e) is not multi-deposited in a color by color, but a single color such as silver may be used to realize a metal feeling regardless of colors.

According to another aspect of the present invention, there is provided a gradient decorative film produced by the above-described method for manufacturing a gradient decorative film, wherein the translucent color gradation layer, the first primer coating layer, and the adhesive layer are formed on one surface of the film member, The second primer coating layer is formed on the other surface of the film member, and the UV molding layer, the vapor deposition layer, and the color printing layer are sequentially formed on the second primer coating layer.

According to the gradient decorative film of the present invention and the manufacturing method thereof, a gradation effect can be realized in a decorative film for a glass, which is advantageous in that a differentiated and beautiful design can be realized compared with the conventional one.

In addition, there is an advantage that it is possible to realize an effect that can not be realized through silk screen printing (for example, it is impossible to express the light and dark gradation at a constant level) by gravure printing.

Particularly, it is possible to realize gradation aesthetics having a pastel metal feeling by directly forming the gradation layer with translucent color ink, and it is possible to solve the problem of double printing of the gradation layer and the semitransparent color ink layer, for example, There is an advantage that the problem of luminance reduction and the like can be solved.

In addition, regardless of the type of color, one color (for example, silver, etc.) is uniformly deposited, so that the work process is simple and the loss of color matching by color can be reduced. Moreover, it is possible to drastically reduce defects in color deviation, thereby improving deposition yield and reducing deposition cost.

In addition, the UV molding layer, the vapor deposition layer, and the color printing layer forming step can be mass-produced immediately by using existing equipment without any additional equipment or method change.

The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG.

1 is a flowchart briefly showing a method of manufacturing a gradient decorative film according to an embodiment of the present invention.
FIG. 2 is a flowchart showing the detailed steps included in the gradient film preparation step of FIG.
3 is a cross-sectional view illustrating a cross-sectional structure of a gradient decorative film according to an embodiment of the present invention.
4 is a view illustrating a gradated decorative film according to an embodiment of the present invention.
5 is a diagram showing a state in which a gradient decorative film according to an embodiment of the present invention is applied to an object (e.g., glass).
6 is a view showing various shapes of a gradation layer of a gradation decorative film according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

It is to be understood that the present invention is not limited to the disclosed embodiments, but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, It is provided to inform.

There has been a growing interest in the effects of forming a variety of appearance aesthetics that can be realized through a glass in various electronic devices (e.g., mobile devices, etc.), and a decorative film for a glass Technology development is actively being done. In the case of conventional decorative films for glass, a silk screen method was used to print UV-molding, deposition, and color ink on a film coated with an adhesive. However, according to the conventional art, it is practically impossible to realize a gradation effect which is limited in design implementation and is widely used for ornamental aesthetics. In addition, since the last visible color is realized by multi-deposition color, there is a problem in that the color change is severe due to the variation of the deposition thickness, and the color to be implemented is limited. Further, there is a problem that the deposition cost is increased due to the lowering of the deposition efficiency. A gradient decorative film and a manufacturing method thereof according to the present invention to be described below are intended to solve such a problem in the prior art.

In the drawings, FIG. 1 is a flowchart showing a method of manufacturing a gradient decorative film according to an embodiment of the present invention, and FIG. 2 is a flowchart showing detail steps included in the gradient film preparation step of FIG. And FIG. 3 is a cross-sectional view illustrating a cross-sectional structure of a gradient decorative film according to an embodiment of the present invention.

Referring to FIGS. 1 to 3, a method of manufacturing a gradient decorative film according to an exemplary embodiment of the present invention includes a gradation film preparing step S100, an adhesive layer coating step S200, a slitting step S300, Forming step S400, a deposition layer forming step S500, and a color printing layer forming step S600.

Gradation film preparation step (S100)

This step is a step of preparing a gradation film, which is a step of preparing a gradation film by printing a translucent color gradation layer on one side of a film member.

Referring to FIG. 3, a translucent color gradation layer 120 is formed on one side (e.g., the upper side) of the prepared film member 110.

Thus, by forming the semitransparent color gradation layer 120 directly using the semitransparent color ink through this step, it is possible to realize gradation aesthetics having a pastel metal feeling. According to this, there is an advantage that the problems such as the reduction of the UV pattern effect and the reduction of the deposition layer luminance which can be caused when the gradation layer is printed and the semi-transparent color ink layer is separately printed can be solved.

Alternatively, the first and second primer coating layers 130 and 140 may be formed after the semi-transparent color gradation layer 120 is formed.

As shown in FIG. 2, the gradation film preparation step S100 may include a semi-transparent color gradation layer forming step S110, a first primer coating layer forming step S120, and a second primer coating layer forming step S130 .

A translucent color gradation layer printing step (S110)

This step is a step of printing a semitransparent color gradient layer directly on the surface of a film member by directly using a semitransparent color ink to gravure the semitransparent color gradation layer.

Referring to FIG. 3, it can be seen that the translucent color gradation layer 120 is formed on one side of the film member 110.

Preferably, the film member 110 is made of a PET material, but is not limited thereto. Therefore, various materials similar to PET materials can be used.

The semitransparent color gradation layer 120 may be formed by a gravure printing method. The semitransparent color gradation layer 120 is printed using a halftone printing method so as to have a gradation shape set using a semitransparent color ink of a selected color.

As a specific example, when the halftone dot printing is performed on the semitransparent color gradation layer 120, the size of the halftone dot mesh is preferably in the range of 80 to 450, but it is not necessarily limited to this size.

The shape of the translucent color gradient layer 120 can be selected by the operator and implemented by any one of a plurality of preset gradation shapes. In FIG. 6, various gradation shapes available according to the embodiment of the present invention are introduced .

(D) is a vertical 2-side gradient, (e) is a horizontal 2-side gradation, (f) is a vertical 2-side gradation, Shows the shape of Multi Linear Gradation, and various other shapes can be used. Thus, various gradation shapes that can not be realized through the conventional silk screen method can be embodied in a decorative film.

Meanwhile, the translucent color gradation layer 120 formed through this step may be gravure printed in a tint or a halftone, but is not limited thereto.

As described above, by directly printing the translucent color gradation layer 120 using the translucent color ink, the gradation layer is subjected to halftone printing, and the UV pattern effect, which may occur when the translucent color ink layer is printed separately, Can be solved.

The first primer coating layer forming step (S120)

This step is a first primer coating layer forming step in which a first primer coating layer is formed on the translucent color gradation layer formed in the previous step.

Referring to FIG. 3, a first primer coating layer 130 is formed on the translucent color gradation layer 120. At this time, the first primer coating layer 130 has a function of enhancing the interlaminar adhesive strength with the adhesive layer 150, which will be described later.

The second primer coating layer forming step (S130)

This step is a step of forming a second primer coating layer, and a second primer coating layer is formed on the opposite surface where a translucent color gradation layer is formed.

Referring to FIG. 3, the second primer coating layer 130 is formed on the opposite surface of the translucent color gradation layer 120, that is, the other surface of the film member 110.

The second primer coating layer 130 has a function of enhancing the interlaminar adhesion between the UV priming layer 160 and a later-described UV priming layer 160. The second primer coating layer 130 may be variously used as long as it is known to have such a function.

A translucent color gradation layer 120 and a first primer coating layer 130 are sequentially formed on one side of the film member 110. The second primer coating layer 140 is formed on the other side of the film member 110, . This is called a gradient film, which can be printed in Roll To Roll and stored in a roll state.

The adhesive layer coating step (S200)

This step is an adhesive layer coating step. When a gradation film is prepared through the previous step (S100), an adhesive layer is formed on one surface of the film member in which the semitransparent color gradation layer and the first primer coating layer are sequentially formed.

3, a translucent color gradation layer 120 and a first primer coating layer 130 are sequentially formed on one side (e.g., an upper surface) of the film member 110 through a previous step, and an adhesive layer 150 are formed.

OCA (Optical Clear Adhesive) may be used for the adhesive layer 150, but the present invention is not limited thereto. The coating method of the adhesive layer 150 is not limited as long as it is a conventionally known method.

In the slitting step S300,

This step is a slitting step, which is a step of slitting a gradient film to a predetermined size to prepare a gradient film in a sheet form.

Referring to FIG. 3, a gradation film is provided in the form of a sheet. The gradation film, which is stored in a rolled form after the adhesive layer 150 is coated through a previous step, is slitted to a size required for a silk printing process. And is provided in a sheet form. At this time, the slitting size can be variously changed according to the size and shape of the object 200 (e.g., glass or the like).

UV molding layer, vapor deposition layer, color printing layer formation step (S400, S500, S600)

These steps refer to a step of forming an UV molding layer, a vapor deposition layer and a color printing layer on a second primer coating layer as a UV molding layer forming step, a vapor deposition layer forming step and a color printing layer forming step.

Referring to FIG. 3, the UV priming layer 160, the deposition layer 170, and the color print layers 180 and 190 are sequentially formed on the second primer coating layer 140.

Specifically, the UV molding layer 160 may have a setting pattern. At this time, the pattern of the UV molding layer 120 is not limited to a specific shape, and may preferably include at least one of a spin, a lenticular, a hairline, and a lattice shape.

The deposition layer 170 may be deposited to have a single deposition color in the UV molding layer 160.

For example, the deposition layer 170 is deposited in a single color, such as silver, for example, in order to realize a metallic feeling regardless of color, instead of depositing the color by color differently from the conventional multi-deposition method.

The color print layers 180 and 190 may be formed of a plurality of layers, and the number and color types of the color print layers 180 and 190 may be changed according to the embodiment and are not limited to the illustrated form.

The gradation decorative film 100 manufactured through such steps has a translucent color gradation layer 120, a first primer coating layer 130, an adhesive layer 150, Are sequentially formed. The second primer coating layer 140, the UV molding layer 160, the deposition layer 170, and the color print layers 180 and 190 are formed on the other surface of the film member 110.

5 is a diagram showing a state in which a gradient decorative film according to an embodiment of the present invention is applied to an object (e.g., glass).

As shown in FIG. 5, the gradient decorative film 100 according to an embodiment of the present invention can be applied to an object 200 (e.g., a glass of a mobile device) to realize a gradation effect.

As described above, according to the structure and the operation of the present invention, a gradation effect can be realized in a decorative film for a glass, so that it is possible to realize a differentiated and beautiful design than the conventional one.

In addition, there is an advantage that it is possible to realize an effect that can not be realized through silk screen printing (for example, it is impossible to express the light and dark gradation at a constant level) by gravure printing.

Particularly, it is possible to realize gradation aesthetics having a pastel metal feeling by directly forming the gradation layer with translucent color ink, and it is possible to solve the problem of double printing of the gradation layer and the semitransparent color ink layer, for example, There is an advantage that the problem of luminance reduction and the like can be solved.

In addition, regardless of the type of color, one color (for example, silver, etc.) is uniformly deposited, so that the work process is simple and the loss of color matching by color can be reduced. Moreover, it is possible to drastically reduce defects in color deviation, thereby improving deposition yield and reducing deposition cost.

In addition, the UV molding layer, the vapor deposition layer, and the color printing layer forming step can be mass-produced immediately by using existing equipment without any additional equipment or method change.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the invention is not limited to the disclosed exemplary embodiments. It is obvious that a transformation can be made. Although the embodiments of the present invention have been described in detail above, the effects of the present invention are not explicitly described and described, but it is needless to say that the effects that can be predicted by the configurations should also be recognized.

S100: Gradient film preparation step
S110: Semitransparent color gradation layer formation step
S120: First primer coating layer forming step
S130: Second primer coating layer forming step
S200: Adhesive layer coating step
S300: Slitting step
S400: UV molding layer formation step
S500: Deposition layer formation step
S600: color printing layer forming step
100: Gradient decorative film
110: Film member
120: translucent color gradient layer
130: first primer coating layer
140: Second primer coating layer
150: Adhesive layer
160: UV molding layer
170:
180, 190: color printing layer
200: Object (eg glass)

Claims (14)

(a) preparing a gradation film by printing a semitransparent color gradation layer on one side of a film member;
(b) forming an adhesive layer on a surface of the translucent color gradation layer;
(c) providing the gradation film in a sheet form by slitting the gradation film to a predetermined size;
(d) forming a UV molding layer on the other side of the film member;
(e) forming a vapor deposition layer on the UV molding layer; And
(f) forming a color print layer on the deposition layer;
≪ / RTI >
The method according to claim 1,
The step (a)
(a-1) forming the translucent color gradation layer by a gravure printing method using translucent color ink on one surface of the film member;
≪ / RTI >
3. The method of claim 2,
After the step (a-1)
(a-2) forming a first primer coating layer on the surface on which the translucent color gradation layer is formed; And
(a-3) forming a second primer coating layer on the other surface of the film member, which is the opposite surface on which the semitransparent color gradation layer is formed;
≪ / RTI >
3. The method of claim 2,
In the step (a-1)
Wherein the film member comprises:
Made of PET material
Method of manufacturing a gradient decorative film.
3. The method of claim 2,
In the step (a-1)
Wherein the translucent color gradation layer comprises:
And is halftone printed so as to have a set gradation shape
Method of manufacturing a gradient decorative film.
3. The method of claim 2,
In the step (a-1)
Wherein the translucent color gradation layer comprises:
Printed with a tint or halftone
Method of manufacturing a gradient decorative film.
The method of claim 3,
In the step (a-2)
Wherein the first primer coating layer comprises:
Having a function of enhancing the interlaminar adhesion to the adhesive layer
Method of manufacturing a gradient decorative film.
The method of claim 3,
In the step (a-3)
Wherein the second primer coating layer comprises:
And having an interlaminar adhesion strengthening function with the UV molding layer
Method of manufacturing a gradient decorative film.
The method according to claim 1,
In the step (a)
The gradation film is stored in a roll form
Method of manufacturing a gradient decorative film.
The method according to claim 1,
In the step (b)
The adhesive layer
The coating film formed on the gradation film
Method of manufacturing a gradient decorative film.
The method according to claim 1,
In the step (b)
The gradation film, in which the adhesive layer is coated and then stored in a roll form,
(C) and is slit to a size necessary for the silk printing process and is provided in a sheet form
Method of manufacturing a gradient decorative film.
The method according to claim 1,
In the step (d)
Wherein the UV molding layer has a setting pattern,
Wherein the setting pattern comprises at least one of a spin, a lenticular, a hairline,
Method of manufacturing a gradient decorative film.
The method according to claim 1,
In the step (e)
The vapor-
Having a single deposition color
Method of manufacturing a gradient decorative film.
A gradation decorative film produced according to the method for manufacturing a gradation decorative film according to any one of claims 1 to 13,
Wherein the translucent color gradation layer, the first primer coating layer, and the adhesive layer are formed on one surface of the film member, the second primer coating layer is formed on the other surface of the film member, and the UV priming coating layer is formed on the second primer coating layer, Layer, the vapor deposition layer, and the color printing layer are sequentially formed.

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