KR102481123B1 - Decoration sheet with shadow effect and preparation method thereof - Google Patents

Abstract

The present invention relates to a decoration sheet, and the decoration sheet according to the present invention includes a first base film; a first UV pattern layer sequentially formed on the rear surface of the first base film; a first deposition layer in the form of an inorganic thin film; layer of design printing; and an upper film member including a special printed layer, and a second base film; an adhesive layer formed on one surface of the second base film; a second UV pattern layer having a three-dimensional prism shape sequentially formed on the other surface of the second base film; a second deposition layer in the form of an inorganic thin film; And a shielding printing layer; by being laminated with the lower film member, the design shape of the upper film member not only exhibits a rich and splendid effect by scattering light by the first UV pattern layer, but also has a three-dimensional prism shape of the lower film member. A shading effect is generated by the total reflection phenomenon by the second UV pattern layer of the , so that a sense of thickness or depth of the design can be amplified, so that a design effect such as a three-dimensional sheet can be realized.

Description

Shading effect decoration sheet and its manufacturing method {Decoration sheet with shadow effect and preparation method thereof}

The present invention relates to a decoration sheet, and more particularly, to a decoration sheet capable of creating a sense of depth and dynamic feeling by showing a shading effect on a design within the sheet, and a manufacturing method thereof.

In general, furniture, electronic products, and building materials are attached with decoration sheets printed with various patterns for interior purposes, and are used in various fields such as lapping, glass windows, and surface finishing of various electronic products. .

For example, in electronic devices using glass, interest in effects such as forming various external aesthetics that can be realized through glass is increasing. In particular, technology development related to a decoration film or decoration sheet of glass (which is also referred to as 'decoration film or decoration sheet') is being actively conducted. For example, when a decoration sheet is attached to glass, a metallic texture or a three-dimensional effect can be imparted through the exterior of the electronic device. In particular, mobile and automobile design fields are increasingly demanding designs that implement dynamic and dramatic effects.

Recently, in the design of smart phones or various mobile communication terminals, the front window is simply a single color (eg, black, etc.), and the back cover design is changed to various colors and various three-dimensional patterns. In accordance with this trend, various decoration realization methods for providing differentiation to the back cover are being sought, but there are limitations in the conventional method.

For example, in the decoration sheet, there is a need for a plan for implementing a differentiated decorative aesthetic sense in which the shape and depth of various three-dimensional patterns molded on the back surface are implemented in various ways.

Republic of Korea Patent Publication No. 10-2013-0012474

The present invention is to solve the above problems, by applying a special UV pattern technology, a decoration sheet and a manufacturing method thereof in which a shading effect occurs around the design shape due to a total reflection phenomenon to realize a sense of depth like the shape of a three-dimensional pattern is to provide

One aspect of the present invention for achieving the above object provides a shading effect decoration sheet. The shading effect decoration sheet according to the present invention includes an upper film member; and a lower film member, wherein the upper film member includes a first base film; a first UV pattern layer sequentially formed on a rear surface of the first base film; a first deposition layer; layer of design printing; and a special printing layer, wherein the lower film member includes a second base film; an adhesive layer formed on one surface of the second base film; a second UV pattern layer having a three-dimensional prism shape sequentially formed on the other surface of the second base film; a second deposition layer; and a masking printing layer.

The special printing layer is an epoxy-based resin, acrylic-based resin, polyolefin-based resin, polyamide-based resin, polyester-based resin, polyvinyl chloride-based resin, polyvinyl acetate-based resin, petroleum-based resin, phenol-based resin, polystyrene-based resin, and 70 to 90 parts by weight of at least one resin among urethane-based resins; 5 to 20 parts by weight of a resin solvent; and 2 to 15 parts by weight of a dibasic ester of an aliphatic dicarboxylic acid and an aliphatic alcohol having 1 to 5 carbon atoms, and may be formed by a special ink composition having a low viscosity of 10 to 100 cPs.

The UV pattern in the second UV pattern layer may be a micropattern of an optical member having a plurality of refracting surfaces that totally reflect and refract incident light, and a cross section of the refracting surface may have a triangular shape.

The upper film member may further include an adhesive layer and a release film formed on the first base film.

The UV pattern in the second UV pattern layer may include a first inclined surface and a second inclined surface through which incident light causes total internal reflection.

The UV pattern in the second UV pattern layer may have an effective visibility corner angle Θ1 formed by the first inclined surface and the second inclined surface having a value between 120 and 160 degrees so that incident light may be totally reflected.

In addition, another aspect of the present invention provides a method for manufacturing a shading effect decoration sheet. Method of manufacturing a shading effect decoration sheet according to the present invention comprises the steps of manufacturing an upper film member (S100); Manufacturing a lower film member (S200); and manufacturing a decoration sheet by laminating the upper film member and the lower film member (S300).

The manufacturing of the upper film member (S100) may include forming a first UV pattern layer on the rear surface of the first base film (S110); Forming a first deposition layer on the first UV pattern layer (S120); forming a design printing layer on the first deposition layer (S130); Etching to leave the outline of the design in the design printing layer (S140); and forming a special printing layer by applying a special ink composition to the design printing layer (S150).

The manufacturing of the lower film member (S200) includes forming an adhesive layer on one surface of the second base film (S210); Forming a second UV pattern layer having a three-dimensional prism shape on the other side of the second base film (S220); Forming a second deposition layer on the second UV pattern layer (S230); and forming a shielding printed layer on the second deposition layer (S240).

The special ink composition is an epoxy-based resin, acrylic resin, polyolefin-based resin, polyamide-based resin, polyester-based resin, polyvinyl chloride-based resin, polyvinyl acetate-based resin, petroleum-based resin, phenol-based resin, polystyrene-based resin and 70 to 90 parts by weight of at least one resin among urethane-based resins; 5 to 20 parts by weight of a resin solvent; and 2 to 15 parts by weight of a dibasic ester of an aliphatic dicarboxylic acid and an aliphatic alcohol having 1 to 5 carbon atoms, and may have a low viscosity of 10 to 100 cPs.

The special ink composition includes 80 to 90 parts by weight of polyester resin, 5 to 10 parts by weight of propylene glycol methyl ether acetate as a resin solvent, 0.5 to 2 parts by weight of dimethyl adipate, 1 to 5 parts by weight of dimethyl glutarate and dimethyl succinate. It may include 1 to 5 parts by weight of nate.

The special ink composition may further include 0.1 to 1 part by weight of silica.

In the step of manufacturing a decoration sheet by laminating the upper film member and the lower film member (S300), the special printing layer formed by applying a special ink composition to the design printing layer of the upper film member, and the second base of the lower film member By attaching the adhesive layer formed on the film, it can be laminated in the form of a single sheet.

After the step of manufacturing a decoration sheet by laminating the upper film member and the lower film member (S300), a step of cutting the manufactured decoration sheet (S400) may be further included.

The decoration sheet according to the present invention includes a first base film; a first UV pattern layer sequentially formed on the rear surface of the first base film; a first deposition layer in the form of an inorganic thin film; layer of design printing; and an upper film member including a special printed layer, and a second base film; an adhesive layer formed on one surface of the second base film; a second UV pattern layer having a three-dimensional prism shape sequentially formed on the other surface of the second base film; a second deposition layer in the form of an inorganic thin film; And a shielding printing layer; by being laminated with the lower film member, the design shape of the upper film member not only exhibits a rich and splendid effect by scattering light by the first UV pattern layer, but also has a three-dimensional prism shape of the lower film member. A shading effect is generated by the total reflection phenomenon by the second UV pattern layer of the , so that a sense of thickness or depth of the design can be amplified, so that a design effect such as a three-dimensional sheet can be realized.

In addition, the decoration sheet according to the present invention, when the upper film member and the lower film member are laminated, epoxy resin, acrylic resin, polyolefin resin, polyamide resin, polyester resin, polyvinyl chloride resin, polyvinyl acetate 70 to 90 parts by weight of at least one of a resin-based resin, a petroleum-based resin, a phenolic resin, a polystyrene-based resin, and a urethane-based resin; 5 to 20 parts by weight of a resin solvent; and 2 to 15 parts by weight of a dibasic ester of an aliphatic dicarboxylic acid and an aliphatic alcohol having 1 to 5 carbon atoms and having a low viscosity of 10 to 100 cPs. By filling it, it is possible to prevent air bubbles generated during adhesion and to improve adhesion with the adhesive layer.

1 is a schematic cross-sectional view of a shading effect decoration sheet according to an embodiment of the present invention.
2 is a schematic cross-sectional view of a shading effect decoration sheet according to another embodiment of the present invention.
Figure 3 is a view explaining the principle of the shading effect of the decoration sheet according to an embodiment of the present invention.
4 is a side view showing a second UV pattern of a three-dimensional prism shape formed in a decoration sheet according to an embodiment of the present invention and a view showing a difference in shading effect according to a prism angle.
5 is a flow chart showing a manufacturing method of a shading effect decoration sheet according to an embodiment of the present invention.
6 to 7 are flowcharts showing detailed steps of a method for manufacturing a shading effect decoration sheet according to an embodiment of the present invention.
8 to 17 are cross-sectional views for explaining detailed steps of a method of manufacturing a shading effect decoration sheet according to an embodiment of the present invention.
18 is a photograph showing a shading effect of a decoration sheet manufactured according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the following examples. This embodiment is provided to more completely explain the present invention to those skilled in the art. Accordingly, the shapes of elements in the figures are exaggerated to emphasize clearer description.

The configuration of the present invention for clarifying the solution to the problem to be solved by the present invention will be described in detail with reference to the accompanying drawings based on a preferred embodiment of the present invention, but the same reference numerals are assigned to the components of the drawings. For components, even if they are on other drawings, the same reference numerals have been assigned, and it is made clear in advance that components of other drawings can be cited if necessary in the description of the drawings.

In this specification, the 'adhesive layer' refers to a layer that is easy to attach and detach from the release film and has strong adhesive power when adhering to an adherend after removing the release film, and the 'adhesive layer' refers to a layer that is not easily peeled off after being attached to the release film. say At this time, the adhesive layer applied to the base film should have transmittance of 93% or more, including the base film, so that the design can be implemented clearly.

One aspect of the present invention provides a shading effect decoration sheet.

1 and 2 are schematic cross-sectional views of a shading effect decoration sheet according to an embodiment of the present invention.

Referring to Figure 1, the shading effect decoration sheet according to the present invention may include an upper film member 100 representing the design shape, and a lower film member 200 representing the shading effect.

First, the upper film member 100 is for realizing and viewing an aesthetic design shape on the exterior of a mobile phone, home appliance, automobile, etc., on the first base film 110 and the back of the first base film 110 a first UV pattern layer 120; a first deposition layer 130 in the form of an inorganic thin film; a design print layer 140; And the special printed layer 150 may be sequentially formed.

The first base film 110 may be selected from the group consisting of polyethylene terephthalate (PET), acrylic, and polycarbonate (PC), and preferably, PET may be used. The thickness of the first base film is preferably 0.5 mm or less to enable subsequent UV patterning and printing processes. If it is out of the above range, the thickness is too thick and there is a problem in adhesion when there is a curvature of the adherend (glass, etc.) can

In addition, as shown in FIG. 2 , the first base film 110 may additionally have an adhesive layer 105 and a release film 103 sequentially laminated on one surface. The adhesive layer 105 is for bonding to an object to be adhered later (glass, etc.), and the release film 103 serves to prevent foreign substances from adhering to the adhesive layer 105, and later laminates a decoration sheet to the object to be adhered. It is a member in the form of a film that is peeled off from the decoration sheet before.

At this time, the adhesive layer 105 may be formed by coating one surface of the first base film 110 with OCA adhesive, which is an optically transparent adhesive, to a set thickness. Alternatively, the adhesive layer 105 may be formed by laminating an OCA adhesive member having a set thickness, ie, an OCA adhesive tape, on one surface of the first base film 110 .

When the adhesive layer 105 is formed on one surface of the first base film 110, a release film 103 may be formed on the adhesive layer 105. The release film 103 may use a polyethylene terephthalate (PET) film, but is not limited thereto.

The first UV pattern layer 120 is formed on the rear surface (rear surface) of the first base film 110 and serves to show the visibility and colorful refraction effects of the design printing layer 140 described later. The first UV pattern layer 120 may be formed by UV molding to have a predetermined pattern shape, that is, a first pattern shape, using a transparent UV pattern forming paint. At this time, various pattern shapes including a super precision machine pattern and a hologram pattern may be mentioned as the predetermined pattern shape, and any UV pattern shape that is obvious to those skilled in the art may be applied. At this time, the manufacturing method may be formed through a UV molding method or a gravure printing process.

The gravure printing process is a method using a gravure roll having an intaglio groove of a predetermined pattern or shape formed on the surface. At this time, a pattern layer having a concave-convex cross section may be formed by filling the intaglio groove with a composition for forming a UV pattern layer and then performing gravure printing. When the UV pattern layer is formed in this way, aesthetics can be improved by enabling various design expressions.

A paint for forming a UV pattern may include a binder material. The binder material is an epoxy-based resin, an acrylic-based resin, a polyolefin-based resin, a polyamide-based resin, a polyester-based resin, a polyvinyl chloride-based resin, a polyvinyl acetate-based resin, a petroleum-based resin, a phenol-based resin, a polystyrene-based resin, and It may include at least one of urethane-based resins. Specifically, the gravure printing process may be performed by filling a gravure roll having an intaglio groove on a surface thereof with a composition for forming a pattern layer including a binder material. Accordingly, since the pattern layer can be directly formed without a separate curing process later, the process can be simplified and the process time can be reduced.

The first deposition layer 130 is formed on the rear surface of the first UV pattern layer 120 and serves to indicate the visibility of the design printing layer 140 to be described later, and chemical vapor deposition (CVD) or physical It may be formed in the form of an inorganic thin film by vapor deposition (Physical Vapor Deposition, PVD) or the like.

Chemical vapor deposition using a chemical reaction in the manufacturing process is an industrial method of making a thin film of silicon or the like on a substrate in a manufacturing process of IC or the like. It is used to make silicon oxide film, silicon nitrogen film, and amorphous silicon thin film. When energy is applied to a gas containing chemical substances with heat or light, or when plasma is generated at a high frequency, the raw material is radicalized and highly reactive, adsorbed and deposited on the substrate.

In the physical vapor deposition process, when an oxide semiconductor or GaAs is deposited on a substrate, the compounds are melted to form a target in a solid state, volatilized by heat or an electron beam, and then deposited on the substrate. At this time, the raw material is blown into a gaseous state through heat, laser, electron beam, etc., and is changed into a solid state when the blown gaseous raw material touches the substrate.

The design printing layer 140 is formed on the rear surface (rear surface) of the first deposition layer 130, the design is implemented using a conventional silk screen method, and a gravure printing process using a gravure printing roll having a smooth surface, etc. can be formed through Specifically, the design printing composition including the dye and the binder is put into the gravure printing process and printed in a desired design shape to form the design printing layer 140, so that a separate heat treatment and drying process is not required, which simplifies the process. and has the effect of reducing the process time.

The dye may include at least one red dye selected from the group consisting of Magenta VP, MS Red G, Macrolex Red Violet R, and MS Magenta HM-1450, Waxoline Yellow GFW, Kayaset Yellow GN, and It may include at least one yellow dye selected from the group consisting of Foron Brillinat Yellow 6GL, and also at least one selected from the group consisting of Kayaset Blue 714, Waxoline Blue AP-FW, and MS Cyan HM-1238. A blue-based dye may be included. However, dyes that can be used as the dye are not limited, and dyes capable of exhibiting a predetermined color in the decoration sheet may be used without limitation.

It is preferable that the design printing layer 140 leaves only the design outline (border) through etching in order to show a shading effect later. The groove (empty space) of the etched part can be filled with a special ink composition later.

The special print layer 150 is formed by a special ink composition, and specifically, by applying the special ink composition to the etched design print layer 140 by a printing method, the design print layer 140 and the first deposition layer ( 130), the effect of suppressing the generation of air bubbles during laminating with the lower film member and improving the adhesive strength with the adhesive layer 205 can be exhibited by filling the microcavity removed by etching.

Special ink compositions for this include epoxy-based resins, acrylic resins, polyolefin-based resins, polyamide-based resins, polyester-based resins, polyvinyl chloride-based resins, polyvinyl acetate-based resins, petroleum-based resins, phenol-based resins, and polystyrene-based 70 to 90 parts by weight of at least one resin of a resin and a urethane-based resin; 5 to 20 parts by weight of a resin solvent; and 2 to 15 parts by weight of a dibasic ester of an aliphatic dicarboxylic acid and an aliphatic alcohol having 1 to 5 carbon atoms, and having a low viscosity of 10 to 100 cPs to fill the microscopic space.

At this time, as the resin solvent, any solvent capable of dissolving the above-described resin may be used, and propylene glycol methyl ether acetic acid may be preferably used.

Here, dibasic esters are used within their general definition and include typical dialkyl esters of dicarboxylic acids (dibasic acids) that can undergo hydrolysis and reaction of the ester group, such as soap. At low and high pH, usually they can be hydrolyzed to their corresponding alcohols and dibasic acids or acid salts. Preferred dibasic esters are dimethyl adipate, dimethyl glutarate and dimethyl succinate and mixtures thereof. Other esters with long chain alkyl groups derived from mixtures thereof including metals and alcohols such as ethyl, propyl, isopropyl, butyl and amyl may also be used. The acid portion of these esters may also be derived from other low and high molecular weight dibasic acids such as oxalic acid, malonic acid, pimelic acid, suberic acid and azelaic acid and mixtures thereof including the preferred dibasic acids.

As an example, the special ink composition includes 80 to 90 parts by weight of polyester resin, 5 to 10 parts by weight of propylene glycol methyl ether acetate as a resin solvent, 0.5 to 2 parts by weight of dimethyl adipate, 1 to 5 parts by weight of dimethyl glutarate, and 1 to 5 parts by weight of dimethyl succinate may be included. In addition, the special ink composition may further include silica to improve the hardness of the coating film. The silica content may include 0.1 to 1 part by weight based on the special ink composition.

Next, the lower film member 200 is for showing a shading effect, which is one of the characteristics of the present invention, and has a second base film 210 and a three-dimensional prism shape on the rear surface of the second base film 210. a second UV pattern layer 220; a second deposition layer 230 in the form of an inorganic thin film; and a shielding printed layer 240; may be sequentially formed.

The second base film 210 may use the same or different material as the first base film 110 . As an example, the second base film 210 may be selected from the group consisting of polyethylene terephthalate (PET), acrylic, and polycarbonate (PC), and preferably, PET may be used. The thickness of the second base film is preferably 0.5 mm or less to enable subsequent UV patterning and printing processes. If it is out of the above range, the thickness is too thick and there is a problem in adhesion when there is a curvature of the adherend (glass, etc.). can

An adhesive layer 205 may be formed on the second base film 210 for later lamination with an upper film member. The adhesive layer 205 may be formed by coating one surface of the second base film 210 with OCA adhesive, which is an optically transparent adhesive, to a set thickness. Alternatively, the adhesive layer 205 may be formed by laminating an OCA adhesive member having a set thickness, that is, an OCA adhesive tape, to one surface of the second base film 210 .

The second UV pattern layer 220 serves to show a shading effect of the design printed on the design printing layer, and may have a three-dimensional prism shape having a triangular cross section. According to one embodiment, the second UV pattern layer 220 may have a micro pattern of an optical member having a plurality of refracting surfaces for total internal reflection and refracting of incident light.

Figure 3 is a view explaining the principle of the shading effect of the decoration sheet according to an embodiment of the present invention.

As shown in FIG. 3 , incident light incident into the micropattern of the second UV pattern layer 220 in the decoration sheet according to the present invention may cause a shadow phase change of the design by total reflection. For example, the incident light incident into the micro-pattern forms a shadow at a location spaced apart from the design shape by double total reflection, and this phenomenon uses an optical illusion in which the design shape and its shadow are visible, resulting in a sense of depth much greater than the thickness of the sheet. This is felt, and in the case of a back cover in which the sheet is combined, a sense of thickness or depth can be amplified. The amplification of the mentioned thickness means that it looks much thicker than the actual thickness of the back cover, and the amplification of the sense of depth means that it looks deeper than the actual thickness of the back cover.

4 is a side view showing a second UV pattern of a three-dimensional prism shape formed in a decoration sheet according to an embodiment of the present invention and a view showing a difference in shading effect according to a prism angle.

The micropattern may have a two-dimensional triangular cross section and include a bottom surface 221 and first and second inclined surfaces 222 and 223 opposing each other. According to one embodiment, the micropattern may have a width w1 of 20 mm to 40 mm and a height h1 of 4 mm to 6 mm. The lengths of each of the first inclined surface 222 and the second inclined surface 223 may or may not be the same. Each different prism effect can be produced according to the difference in the length of each inclined surface. When the lengths of the first inclined surface 222 and the second inclined surface 223 are the same, a cross section of the micro pattern may be an isosceles triangle. In this case, the first inclined surface 222 and the second inclined surface 223 are boundary surfaces having different refractive indices, and may be reflective surfaces where total internal reflection occurs.

According to one embodiment, in the micropattern, the angle Θ1 of the effective visibility edge 224 formed by the first inclined surface 222 and the second inclined surface 223 is 120 degrees to 160 degrees so that incident light undergoes a total reflection phenomenon. may be between degrees. According to one embodiment, when the angle of the edge 224 of the micropattern is between 120 and 160 degrees, the light incident on the micropattern is first totally reflected by the first inclined surface, and the reflected light is reflected on the second inclined surface. Second total internal reflection may occur by According to one embodiment, each micropattern may be utilized by changing the overall scale to an up or down shape.

The second UV pattern layer 220 may be formed by UV molding a three-dimensional prismatic micropattern of an optical member having a plurality of refracting surfaces for total reflection and refraction of incident light using a transparent UV pattern forming paint. At this time, the manufacturing method should be precisely implemented in a UV molding method using a micro pattern.

A paint for forming a UV pattern may include a binder material. The binder material is an epoxy-based resin, an acrylic-based resin, a polyolefin-based resin, a polyamide-based resin, a polyester-based resin, a polyvinyl chloride-based resin, a polyvinyl acetate-based resin, a petroleum-based resin, a phenol-based resin, a polystyrene-based resin, and It may include at least one of urethane-based resins.

The second deposition layer 230 is formed on the rear surface of the second UV pattern layer 220 and is formed in the form of an inorganic thin film by chemical vapor deposition (CVD) or physical vapor deposition (PVD). It can be.

The shielding printed layer 240 serves to block transmission of light, and can be implemented by printing dark colors, and when viewed from the top of the decoration sheet according to the present invention, the lower side of the shielding printed layer 240 is transparent. do not become As an example, the shielding printed layer 240 may be a silk-printed layer formed by a silk screen printing method.

In addition, another aspect of the present invention provides a method for manufacturing a shading effect decoration sheet.

5 is a flow chart showing a manufacturing method of a shading effect decoration sheet according to an embodiment of the present invention.

Referring to Figure 5, the manufacturing method of the shading effect decoration sheet according to the present invention

Manufacturing an upper film member (S100);

Manufacturing a lower film member (S200); and

and manufacturing a decoration sheet by laminating the upper film member and the lower film member (S300).

Hereinafter, a step-by-step method for manufacturing a shading effect decoration sheet according to the present invention will be described in detail.

First, step S100 is a step of manufacturing an upper film member.

Figure 6 is a flow chart showing the detailed steps of the step (S100) of manufacturing the upper film member in the manufacturing method of the shading effect decoration sheet according to an embodiment of the present invention, the manufacturing process of each step is shown in Figures 8 to 12 shown in

Referring to FIG. 6, in the manufacturing of the upper film member (S100),

Forming a first UV pattern layer 120 on the back surface of the first base film 110 (S110);

Forming a first deposition layer 130 on the first UV pattern layer 120 (S120);

forming a design printing layer 140 on the first deposition layer 130 (S130);

Etching the design print layer 140 so that the outline of the design remains (S140); and

Forming a special printed layer 150 by applying a special ink composition to the design printed layer 140 (S150); includes.

Hereinafter, a method of manufacturing the upper film member of the shading effect decoration sheet will be described step by step with reference to FIGS. 8 to 12 .

First, step S110 is a step of forming the first UV pattern layer 120 on the back surface of the first base film 110 . The first base film 110 may be used as a film, or may be used in which an adhesive layer 105 and a release film 103 are sequentially stacked on the top.

Specifically, in the step S110, UV molding is formed to have various pattern shapes, including super precision machine patterns and hologram patterns, using a transparent UV pattern molding paint on the back surface of the transparent first base film 110. By doing so, as shown in FIG. 8 , the first UV pattern layer 120 may be formed on the rear surface of the first base film 110 .

Next, step S120 is a step of forming the first deposition layer 130 in the form of an inorganic thin film on the rear surface of the first UV pattern layer 120 . The first deposition layer 130 is performed to implement various designs by changing the color and reflectance of the UV pattern of the first UV pattern layer 120 . The first deposition layer 130 is formed in the form of an inorganic thin film on the rear surface of the first UV pattern layer 120 as shown in FIG. 9 using a deposition method commonly used in the art, for example, a physical or chemical deposition method. can do.

Next, step S130 is a step of forming the design printed layer 140 on the rear surface of the first deposition layer 130, and the formation of the design printed layer 140 is shown in FIG. The design printing layer 140 is formed to show any one or more of characters and patterns on one side of the decoration sheet according to the present invention, and may be printed to have a predetermined thickness on the entire one side of the sheet, and is printed to partially protrude. It could be. As an example, masking printing may be performed to implement an effective design.

Next, step S140 is a step of etching the design print layer 140 . The etching may be performed to leave only the outline of the design for a shading effect of the design later. At this time, the etching method may use various methods commonly used in the art, and due to the etching, as shown in FIG. 11, the deposition layer except for masking printing is removed.

Next, step S150 is a step of forming the special print layer 150 by applying a special ink composition to the etched design print layer 140 . Specifically, as shown in FIG. 12 after etching the design printed layer 140, by applying a special ink composition, fine particles removed by etching in the design printed layer 140 and the first deposition layer 130 By filling the space, it is possible to suppress the generation of air bubbles during lamination with the lower film member and to improve the adhesive force with the adhesive layer 205 .

Special ink compositions for this include epoxy-based resins, acrylic resins, polyolefin-based resins, polyamide-based resins, polyester-based resins, polyvinyl chloride-based resins, polyvinyl acetate-based resins, petroleum-based resins, phenol-based resins, and polystyrene-based 70 to 90 parts by weight of at least one resin of a resin and a urethane-based resin; 5 to 20 parts by weight of a resin solvent; and 2 to 15 parts by weight of a dibasic ester of an aliphatic dicarboxylic acid and an aliphatic alcohol having 1 to 5 carbon atoms, and having a low viscosity of 10 to 100 cPs to fill the microscopic space.

At this time, as the resin solvent, any solvent capable of dissolving the above-described resin may be used, and propylene glycol methyl ether acetic acid may be preferably used.

Here, dibasic esters are used within their general definition and include typical dialkyl esters of dicarboxylic acids (dibasic acids) that can undergo hydrolysis and reaction of the ester group, such as soap. At low and high pH, usually they can be hydrolyzed to their corresponding alcohols and dibasic acids or acid salts. Preferred dibasic esters are dimethyl adipate, dimethyl glutarate and dimethyl succinate and mixtures thereof. Other esters with long chain alkyl groups derived from mixtures thereof including metals and alcohols such as ethyl, propyl, isopropyl, butyl and amyl may also be used. The acid portion of these esters may also be derived from other low and high molecular weight dibasic acids such as oxalic acid, malonic acid, pimelic acid, suberic acid and azelaic acid and mixtures thereof including the preferred dibasic acids.

As an example, the special ink composition includes 80 to 90 parts by weight of polyester resin, 5 to 10 parts by weight of propylene glycol methyl ether acetate as a resin solvent, 0.5 to 2 parts by weight of dimethyl adipate, 1 to 5 parts by weight of dimethyl glutarate, and 1 to 5 parts by weight of dimethyl succinate may be included. In addition, the special ink composition may further include silica to improve the hardness of the coating film. The silica content may include 0.1 to 1 part by weight based on the special ink composition.

Next, step S200 is a step of manufacturing a lower film member.

7 is a flow chart showing detailed steps of manufacturing a lower film member (S200) in the manufacturing method of a shading effect decoration sheet according to an embodiment of the present invention, and the manufacturing process of each step is shown in FIGS. 13 to 17 shown in

Referring to FIG. 7, in the step of manufacturing the lower film member (S200),

Forming an adhesive layer 205 on one surface of the second base film 210 (S210);

Forming a third prism-shaped second UV pattern layer 220 on the other surface of the second base film 210 (S220);

Forming a second deposition layer 230 on the second UV pattern layer 220 (S230); and

Forming a shielding printed layer 240 on the second deposition layer 230 (S240); includes.

Hereinafter, a method of manufacturing the lower film member of the shading effect decoration sheet will be described step by step with reference to FIGS. 13 to 17.

First, step S210 is a step of forming an adhesive layer 205 on one surface of the second base film 210 . As shown in FIG. 13 , the adhesive layer 205 may be formed by coating one surface of the second base film 210 with OCA adhesive, which is an optically transparent adhesive, to a set thickness. Alternatively, the adhesive layer 205 may be formed by laminating an OCA adhesive member having a set thickness, that is, an OCA adhesive tape, to one surface of the second base film 210 .

Next, step S220 is a step of forming the second UV pattern layer 220 on the other surface of the second base film 210 . Here, the other surface of the second base film 210 refers to a surface opposite to one surface of the second base film 210 on which the adhesive layer 205 is formed in the previous step (S210). Specifically, as shown in FIG. 14, a 3-dimensional prism-shaped second UV pattern layer is formed on the other surface of the transparent second base film 210 through a UV molding method or a gravure printing process using a transparent UV pattern forming paint. Likewise, the second UV pattern layer 220 may be formed on the other surface of the second base film 210 .

Next, step S230 is a step of forming a second deposition layer 230 in the form of an inorganic thin film on the rear surface of the second UV pattern layer 220 . The second deposition layer 230 is formed in the form of an inorganic thin film on the rear surface of the second UV pattern layer 220 as shown in FIG. 15 using a deposition method commonly used in the art, for example, a physical or chemical deposition method. can do.

Next, step S240 is a step of forming the shielding printed layer 240 on the rear surface of the second deposition layer 230, and the formation of the shielding printed layer 240 is shown in FIG. Specifically, the shielding printing layer 240 may be formed as an opaque layer using a silk screen printing method as an example, but is not limited thereto.

Next, step S300 is a step of laminating the manufactured upper film member and lower film member.

17 shows a state in which an upper film member and a lower film member manufactured according to the present invention are laminated.

As shown in FIG. 17, a decoration sheet may be manufactured by laminating the upper film member 100 and the lower film member 200 prepared in the previous steps in the form of a single sheet. Specifically, the special printing layer 150 formed by applying a special ink composition to the design printing layer 140 of the upper film member 100 and the adhesive layer formed on the second base film 210 of the lower film member 200 By attaching (205), it can be laminated in the form of a single sheet.

Since the special ink composition is as described above, a detailed description thereof will be omitted to avoid redundant description.

The laminated decoration sheet may further include cutting (S400).

The cutting step corresponds to a step of cutting the laminated decoration sheet using equipment such as a laser according to the shape and size of a decoration object, for example glass, after the previous lamination step (S300) is completed.

18 is a photograph showing a shading effect of a decoration sheet manufactured according to an embodiment of the present invention.

The decoration sheet according to the present invention includes a first base film; a first UV pattern layer sequentially formed on the rear surface of the first base film; a first deposition layer in the form of an inorganic thin film; layer of design printing; and an upper film member including a special printed layer, and a second base film; an adhesive layer formed on one surface of the second base film; a second UV pattern layer having a three-dimensional prism shape sequentially formed on the other surface of the second base film; a second deposition layer in the form of an inorganic thin film; And a shielding printing layer; by being laminated with the lower film member, the design shape of the upper film member not only exhibits a rich and colorful effect by scattering light by the first UV pattern layer, but also has a three-dimensional prism shape in the lower film member. As shown in FIG. 18 due to the total reflection phenomenon caused by the second UV pattern layer of , a shading effect (refer to the red circle) can be generated to amplify the sense of thickness or depth of the design, so that the effect of a design such as a three-dimensional sheet can be realized. there is.

In addition, the decoration sheet according to the present invention, when the upper film member and the lower film member are laminated, epoxy resin, acrylic resin, polyolefin resin, polyamide resin, polyester resin, polyvinyl chloride resin, polyvinyl acetate 70 to 90 parts by weight of at least one of a resin-based resin, a petroleum-based resin, a phenolic resin, a polystyrene-based resin, and a urethane-based resin; 5 to 20 parts by weight of a resin solvent; and 2 to 15 parts by weight of a dibasic ester of an aliphatic dicarboxylic acid and an aliphatic alcohol having 1 to 5 carbon atoms and having a low viscosity of 10 to 100 cPs. By filling it, air bubbles generated during adhesion can be prevented, and adhesion with the adhesive layer can be improved.

The above detailed description is illustrative of the present invention. In addition, the foregoing is intended to illustrate and describe preferred embodiments of the present invention, and the present invention can be used in various other combinations, modifications, and environments. That is, changes or modifications are possible within the scope of the concept of the invention disclosed in this specification, within the scope equivalent to the written disclosure and / or within the scope of skill or knowledge in the art. The written embodiment describes the best state for implementing the technical idea of the present invention, and various changes required in the specific application field and use of the present invention are also possible. Therefore, the above detailed description of the invention is not intended to limit the invention to the disclosed embodiments. Also, the appended claims should be construed to cover other embodiments as well.

100: upper film member 103: release film
105: adhesive layer 110: first base film
120: first UV pattern layer 130: first deposition layer
140: design printing layer 150: special printing layer
200: lower film member 205: adhesive layer
210: second base film 220: second UV pattern layer
230: second deposition layer 240: shielding printing layer

Claims (10)

an upper film member; and
Including; lower film member,
The upper film member may include a first base film; a first UV pattern layer sequentially formed on a rear surface of the first base film; a first deposition layer; layer of design printing; and a special printing layer;
The lower film member may include a second base film; an adhesive layer formed on one surface of the second base film; a second UV pattern layer having a three-dimensional prism shape sequentially formed on the other surface of the second base film; a second deposition layer; And a masking printing layer; includes,
The special printing layer is an epoxy-based resin, acrylic-based resin, polyolefin-based resin, polyamide-based resin, polyester-based resin, polyvinyl chloride-based resin, polyvinyl acetate-based resin, petroleum-based resin, phenol-based resin, polystyrene-based resin, and 70 to 90 parts by weight of at least one resin among urethane-based resins; 5 to 20 parts by weight of a resin solvent; And 2 to 15 parts by weight of a dibasic ester of an aliphatic dicarboxylic acid and an aliphatic alcohol having 1 to 5 carbon atoms, formed by a special ink composition having a low viscosity of 10 to 100 cPs,
The UV pattern in the second UV pattern layer has a plurality of refracting surfaces that totally reflect and refract incident light, and the cross section of the refracting surface is a micro-pattern of an optical member having a triangular shape, shading effect decoration sheet. According to claim 1,
The upper film member is a shading effect decoration sheet, characterized in that it further comprises an adhesive layer and a release film formed on the first base film. According to claim 1,
The UV pattern in the second UV pattern layer is a shading effect decoration sheet, characterized in that it comprises a first inclined surface and a second inclined surface to cause total reflection of the incident light. According to claim 3,
The UV pattern in the second UV pattern layer has an effective visibility corner angle Θ1 formed by the first inclined surface and the second inclined surface so that the incident light has a value between 120 and 160 degrees, characterized in that Shading effect decoration sheet. Manufacturing an upper film member (S100);
Manufacturing a lower film member (S200); and
Including; manufacturing a decoration sheet by laminating the upper film member and the lower film member (S300);
In the step of manufacturing the upper film member (S100),
Forming a first UV pattern layer on the back surface of the first base film (S110);
Forming a first deposition layer on the first UV pattern layer (S120);
forming a design printing layer on the first deposition layer (S130);
Etching to leave the outline of the design in the design printing layer (S140); and
Forming a special printing layer by applying a special ink composition to the design printing layer (S150); including,
In the step of manufacturing the lower film member (S200),
Forming an adhesive layer on one surface of the second base film (S210);
Forming a second UV pattern layer having a three-dimensional prism shape on the other side of the second base film (S220);
Forming a second deposition layer on the second UV pattern layer (S230); and
Forming a shielding printed layer on the second deposition layer (S240); including,
The special ink composition is an epoxy-based resin, acrylic resin, polyolefin-based resin, polyamide-based resin, polyester-based resin, polyvinyl chloride-based resin, polyvinyl acetate-based resin, petroleum-based resin, phenol-based resin, polystyrene-based resin and 70 to 90 parts by weight of at least one resin among urethane-based resins; 5 to 20 parts by weight of a resin solvent; And 2 to 15 parts by weight of a dibasic ester of an aliphatic alcohol having 1 to 5 carbons and an aliphatic dicarboxylic acid, and a method for producing a shading effect decoration sheet, characterized in that it has a low viscosity of 10 to 100 cPs. delete According to claim 5,
The special ink composition includes 80 to 90 parts by weight of polyester resin, 5 to 10 parts by weight of propylene glycol methyl ether acetate as a resin solvent, 0.5 to 2 parts by weight of dimethyl adipate, 1 to 5 parts by weight of dimethyl glutarate and dimethyl succinate. Method for producing a shading effect decoration sheet comprising 1 to 5 parts by weight of nate. According to claim 7,
The method of producing a shading effect decoration sheet, characterized in that the special ink composition further comprises 0.1 to 1 part by weight of silica. According to claim 5,
In the step of manufacturing a decoration sheet by laminating the upper film member and the lower film member (S300), the special printing layer formed by applying a special ink composition to the design printing layer of the upper film member, and the second base of the lower film member A method for producing a shading effect decoration sheet, characterized in that laminating in the form of a single sheet by attaching the adhesive layer formed on the film. According to claim 5,
After the step of manufacturing a decoration sheet by laminating the upper film member and the lower film member (S300), the manufacturing method of the decoration sheet, characterized in that it further comprises a step (S400) of cutting the manufactured decoration sheet.

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