KR20220137180A - Decoration sheet with shadow effect and preparation method thereof - Google Patents

Abstract

The present invention relates to a decoration sheet. In the decoration sheet according to the present invention, an upper film member, which comprises: a first base film; a first UV pattern layer sequentially formed on a rear surface of the first base film; a first deposition layer in the form of an inorganic thin film; a design printing layer; and a special printing layer, and a lower film member, which comprises: 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 the inorganic thin film; and a shielding printing layer are laminated such that the design shape of the upper film member inhibits a rich and splendid effect due to the scattering of light by the first UV pattern layer and a total reflection phenomenon by the second UV pattern layer having a three-dimensional prismatic shape of the lower film member causes a shadow effect to amplify the sense of thickness or depth of the design and to realize the design effect such as a three-dimensional sheet.

Description

Shadow 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 in the sheet, and a method for manufacturing the same.

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 processing, glass windows, and surface finishing of various electronic products. .

For example, in an electronic device using glass, interest in effects such as the formation of various appearance aesthetics that can be realized through glass is increasing. In particular, technology development regarding a glass decoration film or decoration sheet (which is also referred to as a 'decoration film or decorative sheet') is being actively developed. 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, the mobile and automotive design fields are increasingly demanding designs that realize dynamic and dramatic effects.

Recently, in the design of smart phones or various mobile communication terminals, the front window is simply made of a single color (eg, black, etc.), and the back cover design is changed into various colors and various three-dimensional patterns. In accordance with this trend, various decoration implementation methods have been sought to differentiate the back cover, but the conventional method has limitations.

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

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

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

One aspect of the present invention for achieving the above object provides a shadow effect decoration sheet. The shade effect decoration sheet according to the present invention includes an upper film member; and a lower film member, wherein the upper film member comprises: a first base film; a first UV pattern layer sequentially formed on a rear surface of the first base film; a first deposited layer; design print layer; and a special printing layer, wherein the lower film member comprises: 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 deposited layer; and a shielding printed layer.

The special printing layer is an epoxy-based resin, an acrylic 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 70 to 90 parts by weight of at least one of the 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 1-5 carbons and an aliphatic dicarboxylic acid, 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 micro-pattern of an optical member having a plurality of refracting surfaces that totally reflect and refract incident light, and the refracting surface has a triangular cross-section.

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 for causing total reflection of incident light.

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

In addition, another aspect of the present invention provides a method of manufacturing a shadow effect decoration sheet. The manufacturing method of the shadow 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 laminating the upper film member and the lower film member to prepare a decoration sheet (S300); may include.

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 print layer on the first deposition layer (S130); etching the design to leave the outline of the design in the design printing layer (S140); and forming a special print layer by applying a special ink composition to the design print 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 surface of the second base film (S220); forming a second deposition layer on the second UV pattern layer (S230); and forming a shielding printing layer on the second deposition layer (S240).

The special ink composition includes an epoxy-based resin, an acrylic 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 70 to 90 parts by weight of at least one of the 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 1-5 carbons and an aliphatic dicarboxylic acid, and may have a low viscosity of 10 to 100 cPs.

The special ink composition contains 80 to 90 parts by weight of a polyester resin, 5 to 10 parts by weight of propylene glycol methyl ether acetic acid 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. 1 to 5 parts by weight of the nate.

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

The step (S300) of manufacturing a decoration sheet by laminating the upper film member and the lower film member is a 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 It can be laminated in the form of one sheet by attaching the adhesive layer formed on the film.

After the step (S300) of manufacturing the decoration sheet by laminating the upper film member and the lower film member, the step (S400) of cutting the prepared decoration sheet 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 a rear surface of the first base film; a first deposition layer in the form of an inorganic thin film; design print layer; And an upper film member including a special printing layer, 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 laminating the lower film member, the design shape of the upper film member not only shows a rich and colorful effect by scattering light by the first UV pattern layer, but also the three-dimensional prism shape of the lower film member A shading effect is generated due to the total reflection by the second UV pattern layer of the second UV pattern layer, which can amplify the sense of thickness or depth of the design, thereby realizing the effect of a design such as a three-dimensional sheet.

In addition, when the decoration sheet according to the present invention is laminated with the upper film member and the lower film member, an epoxy-based resin, an acrylic resin, a polyolefin-based resin, a polyamide-based resin, a polyester-based resin, a polyvinyl chloride-based resin, polyvinyl acetate 70 to 90 parts by weight of at least one of a resin-based resin, a petroleum-based resin, a phenol-based 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 alcohol having 1-5 carbons and an aliphatic dicarboxylic acid, wherein a special printed layer formed of a special ink composition having a low viscosity of 10 to 100 cPs is etched. By filling it, it is possible to prevent bubbles generated during adhesion and improve adhesion with the adhesive layer.

1 is a schematic cross-sectional view of a shadow effect decoration sheet according to an embodiment of the present invention.
2 is a schematic cross-sectional view of a shadow effect decoration sheet according to another embodiment of the present invention.
3 is a view for explaining the shading effect principle 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 the difference in shading effect according to the angle of the prism.
5 is a flowchart illustrating a method of manufacturing a shadow effect decoration sheet according to an embodiment of the present invention.
6 to 7 are flowcharts showing detailed steps of a method of manufacturing a shadow 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 shadow effect decoration sheet according to an embodiment of the present invention.
18 is a photograph showing the shading effect of the 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 embodiments. This example is provided to more completely explain the present invention to those of ordinary skill in the art. Accordingly, the shapes of elements in the drawings are exaggerated to emphasize a clearer description.

The configuration of the invention for clarifying the solution of 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 in assigning reference numbers to the components of the drawings For the components, even if they are on different drawings, the same reference numbers are given, and it is noted in advance that the components of other drawings can be cited when necessary in the description of the drawings.

As used herein, the term 'adhesive layer' refers to a layer that is easy to attach and detach from a release film and has strong adhesive force when adhered to an object after removal of the release film. say At this time, the adhesive layer applied to the base film should have a transmittance of 93% or more, including the base film, so that the design can be clearly implemented.

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

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

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

First, the upper film member 100 is to implement and visually recognize an aesthetic design shape on the exterior of mobile phones, home appliances, automobiles, etc., and the first base film 110 and the first base film 110 a first UV pattern layer 120 ; a first deposition layer 130 in the form of an inorganic thin film; design print layer 140 ; and a special printed layer 150 may be sequentially formed.

The first base film 110 may be selected from the group consisting of polyethylene terephthalate (PET), acryl and polycarbonate (PC), preferably PET. The thickness of the first base film is preferably 0.5 mm or less to enable subsequent UV patterning and printing processes. can

In addition, as shown in FIG. 2 , the first base film 110 may have an adhesive layer 105 and a release film 103 sequentially stacked on one side thereof. The adhesive layer 105 is for adhering 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 a decoration sheet is laminated to the adherend later. It is a member in the form of a film that is peeled off from the decoration sheet before.

In this case, the adhesive layer 105 may be formed by coating one surface of the first base film 110 with an 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, that is, 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 , the release film 103 may be formed on the adhesive layer 105 . The release film 103 may be a PET (polyethylene terephthalate) 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 various refractive effects of the design print layer 140 to be 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 molding paint. At this time, the predetermined pattern shape may include various pattern shapes including a super precision machine pattern and a hologram pattern. In this case, 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 in which an engraved groove of a predetermined design or shape is formed on the surface. In this case, a pattern layer having a concave-convex cross-section may be formed by filling the intaglio groove with a composition for forming the UV pattern layer and then performing gravure printing. When the UV pattern layer is formed in this way, it is possible to express various designs, thereby improving aesthetics.

The paint for UV pattern molding may include a binder material. The binder material is an epoxy-based resin, an acrylic 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 At least one of urethane-based resins may be included. Specifically, the gravure printing process may be performed by filling the pattern layer-forming composition including the binder material in the gravure roll having intaglio grooves formed on the surface. Accordingly, the pattern layer can be directly formed without a separate curing process later, thereby simplifying the process and reducing the process time.

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 print layer 140 to be described later, chemical vapor deposition (CVD) or physical It may be formed in the form of an inorganic thin film by physical vapor deposition (PVD) or the like.

Chemical vapor deposition using a chemical reaction in the manufacturing process is an industrial method for making a thin film such as silicon on a substrate in a manufacturing process such as an IC. 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 by heat or light, or when plasma is generated at a high frequency, the raw material is radicalized and the reactivity is greatly increased, so that it is adsorbed and deposited on the substrate.

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

The design printing layer 140 is formed on the rear surface (rear side) of the first deposition layer 130, and 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, since a design printing composition including a dye and a binder is added to the gravure printing process and printed in the shape of a desired design to form the design printing layer 140, a separate heat treatment and drying process is not required, so the process can be simplified. 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. It may include a blue-based dye. However, the dye that can be used as the dye is not limited, and the dye that can represent a predetermined color in the decoration sheet can be used without limitation.

It is preferable that the design print layer 140 leaves only the design outline (border) through etching or the like in order to show a shading effect later. The grooves (empty spaces) of the etched part may be later filled with a special ink composition.

The special print layer 150 is formed by a special ink composition, and by applying the special ink composition to the specifically etched design print layer 140 by a printing method, the design print layer 140 and the first deposition layer ( By filling the microcavity removed by etching in 130), it is possible to suppress the generation of bubbles during lamination with the lower film member and to improve the adhesion with the adhesive layer 205 .

As a special ink composition for this purpose, 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 70 to 90 parts by weight of at least one 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 alcohol having 1-5 carbons and an aliphatic dicarboxylic acid, and having a low viscosity of 10 to 100 cPs to fill the microcavity may be used.

At this time, as the resin solvent, any solvent capable of dissolving the above-mentioned 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) which can undergo hydrolysis and reaction of ester groups, such as soaps. Usually at low and high pH 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. In addition, other esters having long chain alkyl groups derived from alcohols and mixtures thereof including metals such as ethyl, propyl, isopropyl, butyl and amyl may be used. The acid moieties 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 preferred dibasic acids.

As an example, the special ink composition comprises 80 to 90 parts by weight of a polyester resin, 5 to 10 parts by weight of propylene glycol methyl ether acetic acid 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 content of the silica may include 0.1 to 1 part by weight based on the special ink composition.

Next, the lower film member 200 is for showing the 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 printing layer 240; may be sequentially formed.

The second base film 210 may use the same or different material from the first base film 110 . As an example, the second base film 210 may be selected from the group consisting of polyethylene terephthalate (PET), acryl and polycarbonate (PC), preferably PET. The thickness of the second base film is preferably 0.5 mm or less to enable subsequent UV patterning and printing processes. can

The second base film 210 may form an adhesive layer 205 thereon for later lamination with the upper film member. The adhesive layer 205 may be formed by coating one surface of the second base film 210 with an 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, on one surface of the second base film 210 .

The second UV pattern layer 220 serves to represent the 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 an embodiment, the second UV pattern layer 220 may have a micro-pattern of an optical member having a plurality of refracting surfaces that totally reflect and refract incident light.

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

As shown in FIG. 3, the incident light incident into the micro pattern 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, incident light incident into the micropattern 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 much deeper feeling than the thickness of the sheet. This is felt, and in the case of the back cover combining the sheet, it is possible to amplify a sense of thickness or depth. The aforementioned amplification of the thickness means that it looks much thicker than the actual thickness of the back cover, and the amplification of the 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 the difference in shading effect according to the angle of the prism.

The micro-pattern may have a two-dimensional triangular cross-section, and may include a bottom surface 221 , and first and second inclined surfaces 222 and 223 opposing each other. According to one embodiment, the micro-pattern may have a width w1 of 20 mm to 40 mm and a height h1 of 4 mm to 6 mm. Each of the first inclined surface 222 and the second inclined surface 223 may have the same length or may not be the same. Depending on the difference in the length of each inclined surface, different prism effects can be produced. When the lengths of the first inclined surface 222 and the second inclined surface 223 are the same, the 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 interface surfaces having different refractive indices, and may be reflective surfaces in which total reflection occurs.

According to one embodiment, in the micro pattern, 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 the incident light is totally reflected. It can be between degrees. According to one embodiment, when the angle of the corner 224 of the micro pattern is between 120 and 160 degrees, the light incident on the micro pattern is first totally reflected by the first inclined surface, and the reflected light is on the second inclined surface. Accordingly, a second total reflection may occur. According to one embodiment, each micro pattern may be utilized by changing the overall scale up or down into a shape.

The second UV pattern layer 220 may be formed by UV molding a three-dimensional prism-shaped micro-pattern of an optical member having a plurality of refracting surfaces that totally reflect and refract incident light using a transparent UV pattern molding paint. At this time, the manufacturing method should be precisely implemented by UV molding using a micro pattern.

The paint for UV pattern molding may include a binder material. The binder material is an epoxy-based resin, an acrylic 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 At least one of urethane-based resins may be included.

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). can be

The shielding printing layer 240 performs a function of blocking the transmission of light, and can be implemented by printing a dark color, and when looking down from the upper side of the decoration sheet according to the present invention, the lower side of the shielding printing layer 240 is transparent make sure it doesn't happen The shielding printing layer 240 may be, for example, a silk printing layer formed by a silk screen printing method.

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

5 is a flowchart illustrating a method of manufacturing a shadow effect decoration sheet according to an embodiment of the present invention.

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

manufacturing an upper film member (S100);

manufacturing a lower film member (S200); and

and laminating the upper film member and the lower film member to prepare a decoration sheet (S300).

Hereinafter, the manufacturing method of the shadow effect decoration sheet according to the present invention will be described in detail step by step.

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

6 is a flowchart showing detailed steps of the step (S100) of manufacturing the upper film member in the manufacturing method of the shadow effect decoration sheet according to an embodiment of the present invention, and the manufacturing process of each step is shown in FIGS. 8 to 12 shown in

Referring to Figure 6, the step of manufacturing the upper film member (S100),

forming a first UV pattern layer 120 on the rear 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 print 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

and forming a special print layer 150 by applying a special ink composition to the design print layer 140 (S150).

Hereinafter, a method of manufacturing the upper film member of the shadow 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 rear surface of the first base film 110 . The first base film 110 may be used as it is, or an adhesive layer 105 and a release film 103 may be sequentially stacked thereon.

Specifically, in step S110, a UV molding is formed to have various pattern shapes including a super precision machine pattern and a hologram pattern by 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 printing layer 140 on the rear surface of the first deposition layer 130 , and the formation of the design printing layer 140 is shown in FIG. 10 . The design print layer 140 is formed to indicate any one or more of characters and patterns on one surface of the decoration sheet according to the present invention, and may be printed to have a predetermined thickness on the entire surface of the sheet, and is printed to partially protrude it might 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 the shading effect of the design. In this case, as the etching method, various methods commonly used in the art may be used, and the deposition layer except for the masking printing is removed as shown in FIG. 11 due to the etching.

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

As a special ink composition for this purpose, 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 70 to 90 parts by weight of at least one 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 alcohol having 1-5 carbons and an aliphatic dicarboxylic acid, and having a low viscosity of 10 to 100 cPs to fill the microcavity may be used.

At this time, as the resin solvent, any solvent capable of dissolving the above-mentioned 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) which can undergo hydrolysis and reaction of ester groups, such as soaps. Usually at low and high pH 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. In addition, other esters having long chain alkyl groups derived from alcohols and mixtures thereof including metals such as ethyl, propyl, isopropyl, butyl and amyl may be used. The acid moieties 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 preferred dibasic acids.

As an example, the special ink composition comprises 80 to 90 parts by weight of a polyester resin, 5 to 10 parts by weight of propylene glycol methyl ether acetic acid 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 content of the silica may include 0.1 to 1 part by weight based on the special ink composition.

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

7 is a flowchart showing detailed steps of the step (S200) of manufacturing the lower film member in the manufacturing method of the shadow 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 Figure 7, 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 second UV pattern layer 220 having a three-dimensional prism shape 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

and forming a shielding printing layer 240 on the second deposition layer 230 (S240).

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

First, step S210 is a step of forming the 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 an optically transparent OCA 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, on 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 the 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 by forming a second UV pattern layer in a three-dimensional prism shape through a UV molding method or a gravure printing process using a transparent UV pattern molding paint on the other surface of the transparent second base film 210, Similarly, 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 the 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. 16 . 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 the lower film member.

17 shows a state of laminating the upper film member and the lower film member manufactured according to the present invention.

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

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

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

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

18 is a photograph showing the shading effect of the 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 a rear surface of the first base film; a first deposition layer in the form of an inorganic thin film; design print layer; And an upper film member including a special printing layer, 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 laminating 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 as a result of total reflection by the second UV pattern layer of have.

In addition, when the decoration sheet according to the present invention is laminated with the upper film member and the lower film member, an epoxy-based resin, an acrylic resin, a polyolefin-based resin, a polyamide-based resin, a polyester-based resin, a polyvinyl chloride-based resin, polyvinyl acetate 70 to 90 parts by weight of at least one of a resin-based resin, a petroleum-based resin, a phenol-based 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 alcohol having 1-5 carbons and an aliphatic dicarboxylic acid, wherein a special printed layer formed of a special ink composition having a low viscosity of 10 to 100 cPs is etched. By filling the , 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 above description shows and describes 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 herein, 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 specific application fields and uses of the present invention are possible. Accordingly, the detailed description of the present invention is not intended to limit the present invention to the disclosed embodiments. Also, the appended claims should be construed as including other embodiments.

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 deposited layer; design print layer; and a special printed 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 deposited layer; and a shielding printed layer;
The special printing layer is an epoxy-based resin, an acrylic 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 70 to 90 parts by weight of at least one of the 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 1-5 carbons and an aliphatic dicarboxylic acid, 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 for total reflection and refracting the incident light, and the refracting surface is a micro-pattern of an optical member having a triangular cross-section, a shadow effect decoration sheet. According to claim 1,
The upper film member is a shadow 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 shadow effect decoration sheet, characterized in that it comprises a first inclined surface and a second inclined surface for causing the incident light to take place total reflection. 4. The method of claim 3,
The UV pattern in the second UV pattern layer has an effective visibility edge angle (Θ1) formed by the first inclined surface and the second inclined surface so that the incident light is totally reflected, characterized in that it has a value between 120 degrees and 160 degrees Shading effect decoration sheet. manufacturing an upper film member (S100);
manufacturing a lower film member (S200); and
Including; and laminating the upper film member and the lower film member to prepare a decoration sheet (S300);
The step of manufacturing the upper film member (S100),
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 print layer on the first deposition layer (S130);
etching the design to leave the outline of the design in the design printing layer (S140); and
Including; applying a special ink composition to the design print layer to form a special print layer (S150);
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 surface of the second base film (S220);
forming a second deposition layer on the second UV pattern layer (S230); and
Forming a shielding printing layer on the second deposition layer (S240); Method of manufacturing a shadow effect decoration sheet comprising a. 6. The method of claim 5,
The special ink composition includes an epoxy-based resin, an acrylic 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 70 to 90 parts by weight of at least one of the 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 1-5 carbons and an aliphatic dicarboxylic acid, and having a low viscosity of 10 to 100 cPs. 7. The method of claim 6,
The special ink composition contains 80 to 90 parts by weight of a polyester resin, 5 to 10 parts by weight of propylene glycol methyl ether acetic acid 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 shadow effect decoration sheet, characterized in that it contains 1 to 5 parts by weight of the nate. 8. The method of claim 7,
The special ink composition is a method of manufacturing a shading effect decoration sheet, characterized in that it further comprises 0.1 to 1 part by weight of silica. 6. The method of claim 5,
The step (S300) of manufacturing a decoration sheet by laminating the upper film member and the lower film member is a 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 of manufacturing a shadow effect decoration sheet, characterized in that it is laminated in the form of one sheet by attaching an adhesive layer formed on the film. 6. The method of claim 5,
After the step of manufacturing the 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 the step (S400) of cutting the prepared decoration sheet.

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