KR102163362B1 - Cellular phone decoration film and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a mobile phone decoration film and a manufacturing method thereof, and more particularly, to a decoration film laminated with a PCPMMA layer and a manufacturing method thereof.
The mobile phone decoration film of the present invention includes a polycarbonate polymethyl methacrylate (PCPMMA) layer 110; A PC (polycarbonate) layer 140; including, a tint printing layer 130 formed on the upper side of the PC layer 140; A UV pattern printing layer 150 sequentially formed on the lower side of the PC layer 140; A deposition layer 160 in the form of a thin metal film; And a silk printing layer 170; including, forming an adhesive layer 120 on the upper side of the tint printing layer 130 formed on the upper side of the PC layer 140 and then laminating with the lower side of the PCPMMA layer 110 do.

Description

Cellular phone decoration film and manufacturing method thereof TECHNICAL FIELD

The present invention relates to a mobile phone decoration film and a manufacturing method thereof, and more particularly, to a decoration film laminated with a PCPMMA layer and a manufacturing method thereof.

Recently, with the development of mobile phone and smart phone technology, mobile phones and smart phones of various designs (hereinafter collectively referred to as'mobile phones') have been released.

Such a mobile phone is composed of a case constituting the exterior and various circuit parts that are mounted inside the case to perform the original function of the mobile phone. Of these, since the mobile phone case is usually made of synthetic resin and has low hardness, scratches such as scratches are easily generated due to external impact.

Accordingly, in recent years, technology development for a mobile phone film for improving aesthetics as well as protecting mobile phone products has been actively made. Mobile phone film is a situation in which a variety of colors, gloss, and patterns (that is, patterns) are required to meet the tastes of modern people with various personalities.

Korean Patent Application Publication No. 2013-0052430 discloses an epoxy protective film for mobile phones and a method for manufacturing the same. The manufacturing method of the epoxy protective film for a mobile phone includes preparing a transparent sticker fabric used as a normal transparent film for a mobile phone, performing a normal UV coating after printing a normal UV offset on the transparent sticker fabric, the transparent film Applying an epoxy resin to one side of the, moving the transparent film coated with the epoxy resin into a heat dryer and heat-treating at 30 to 45°C for 8 to 12 hours to bond the epoxy resin to the transparent film to prepare an epoxy protective film , After cooling the epoxy protective film at room temperature for 4 to 6 hours, taking out of the dryer to complete the epoxy protective film, and individually packaging the epoxy protective film.

However, in the case of the prior art described above, as UV coating is performed after UV offset printing, the ink image must be transferred from the printing plate to the blanket and printed on the adherend again, and a separate UV irradiation device is essentially required, and a separate Since the heat treatment and drying process are included, the process is complicated and the process time is long.

In addition, the epoxy protective film for mobile phones according to the prior art has a disadvantage of low aesthetics. In addition, in the case of the prior art, the pattern formed during the UV curing process or the heat treatment process may be damaged, so that uniform pattern transfer during the transfer process is difficult.

Patent Document: Korean Patent Publication No. 2013-0052430

The present invention conceived to solve the problems of the prior art as described above is to provide a mobile phone decoration film and a manufacturing method thereof, which can lower the manufacturing cost of the decoration film and improve the sharpness and gradation effect of the pattern formed on the film. There is a purpose.

A mobile phone decoration film, which is an aspect of the present invention for achieving the above object, includes a polycarbonate polymethyl methacrylate (PCPMMA) layer; A PC (Polycarbonate) layer; and a tint printing layer formed on the upper side of the PC layer; A UV pattern printing layer sequentially formed under the PC layer; A deposition layer in the form of a thin metal film; And a silk printing layer, wherein an adhesive layer is formed on the upper side of the tint printing layer formed on the upper side of the PC layer and then laminated with the lower side of the PCPMMA layer.

In addition, the adhesive layer is characterized in that the OCA (Optically Clear Adhesive, optically transparent adhesive) film.

In addition, the thickness of the PCPMMA layer is characterized in that 0.64mm.

In addition, the thickness of the PC layer is characterized in that 0.125mm.

On the other hand, a method of manufacturing a mobile phone decoration film according to another aspect of the present invention comprises: forming a tint printing layer on the upper side of the PC layer; Forming a UV pattern printing layer under the PC layer; Forming a deposition layer in the form of a metal thin film under the UV pattern printing layer; Forming a silk printing layer under the deposition layer; And forming an adhesive layer with an OCA film on the upper side of the tint printing layer formed on the PC layer, and then laminating it with the lower side of the PCPMMA layer.

Therefore, according to the mobile phone decoration film and its manufacturing method of the present invention, there is an effect of lowering the manufacturing cost of the mobile phone decoration film and improving the sharpness and gradation effect of the pattern formed on the film.

In addition, compared to the case of printing on the PC layer and tint printing on the PET layer, there is an effect of realizing various layer structures.

In addition, due to the use of PCPMMA material instead of the existing PMMA material, cracks and cracks are suppressed when implementing the three-dimensional shape of the back cover, and the pattern is not exposed to the outside when processing according to the thickness.

1 is a cross-sectional view showing the configuration of a mobile phone decoration film according to an embodiment of the present invention,
2 is a flowchart showing a method of manufacturing a mobile phone decoration film according to an embodiment of the present invention.

The terms or words used in this specification and claims should not be construed as being limited to their usual or dictionary meanings, and the inventor may appropriately define the concept of terms in order to describe his own invention in the best way. It should be interpreted as a meaning and concept consistent with the technical idea of the present invention based on the principle that there is.

Accordingly, the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiment of the present invention, and do not represent all the technical spirit of the present invention, and thus various alternatives that can be substituted for them at the time of application It should be understood that there may be equivalents and variations.

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

1 is a cross-sectional view showing the configuration of a gradient deco film for a mobile phone according to an embodiment of the present invention. As shown in Figure 1, the mobile phone gradient deco film of the present invention includes a PCPMMA (Polycarbonate Polymethyl methacrylate) layer 110 and a PC (Polycarbonate) layer 140; as a base film, the upper side of the PC layer 140 Tint printing layer 130 formed on the; UV pattern printing layer 150 formed under the PC layer 140; A deposition layer 160 in the form of a metal thin film formed under the UV pattern printing layer 150; And a silk printing layer 170 formed under the deposition layer 160. Consisting of including an adhesive layer 120 formed on the upper side of the tint printing layer 130 formed on the upper side of the PC layer 140, adhered to the upper side of the tint printing layer 130 formed on the upper side of the PC layer 140 After the layer 120 is formed, it is formed by laminating with the lower side of the PCPMMA layer 110.

That is, the mobile phone gradient deco film of the present invention is the adhesive layer 120, the tint printing layer 130, the PC layer 140, the UV pattern printing layer 150, the lower side of the PCPMMA layer 110 based on the upper and lower cross-sections. The deposition layer 160 and the silk printing layer 170 are sequentially stacked.

PCPMMA (Polycarbonate Polymethyl methacrylate) layer 110, which is a base film, is a type of special resin and is a polymer (polymer) component of methyl methacrylate, and has excellent optical properties, weather resistance, surface strength, hardness, and moldability. It is a feature.

Another base film, PC (Polycarbonate) layer 140, is a kind of thermoplastic plastic. It has features such as impact resistance, heat resistance, weather resistance, self-extinguishing property, and transparency, and has an impact degree of about 150 times higher than that of tempered glass, so it has excellent flexibility and workability. It is widely used as a substitute for acrylic, which is easily broken and deformable, and as a supplement to general plate glass.

The tint printing layer 130 is formed on one side of the PC layer 140 or on one side of the PCPMMA layer 110, but may be formed through a gravure printing process using a gravure printing roll having a smooth surface. . The composition for forming the tint printing layer 130 used at this time includes a dye and a binder. As the tint printing layer 130 is formed by the gravure printing process, since separate heat treatment and drying processes are not required, the process can be simplified and the process time can be reduced.

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 capable of displaying a predetermined color in the mobile phone film can be used without limitation.

As the binder, a resin material having a predetermined adhesive property may be used. By using an adhesive material, it is possible to improve bonding strength between the film and the pattern layer or metal decoration layer described later without a separate adhesive layer. The binder is an epoxy resin, an acrylic resin, a polyolefin resin, a polyamide resin, a polyester resin, a polyvinyl chloride resin, a polyvinyl acetate resin, a petroleum resin, a phenol resin, a polystyrene resin, and a urethane resin. It may contain at least one of resins.

As the adhesive layer 120 formed by being applied to one side of the tint printing layer 130, a roll-type OCA (Optically Clear Adhesive) film may be used, and the OCA film is an optically transparent adhesive film for smart devices including mobile phones. It plays a role of transmitting electrical signals between the LCD or OLED's touch screen.

The UV pattern printing layer 150 is a layer on which a pattern is printed on the lower side of the PC layer 140 by an Ultra-Violet Printing method.

Unlike general commercial papers, which are used a lot for printing paper, materials such as Ban, Eunji, and PP have poor ink penetration unlike regular papers, so the drying speed of the ink after printing is slow, ?x? There is a problem with smearing and poor print quality.

The UV printing method is a method to compensate for the above problems, and uses a dedicated liquid ink that has the property of instant curing, that is, drying immediately when exposed to UV light, and it is instantaneously dried using ultraviolet rays, so there is no material restriction. It can express various colors, and it is resistant to discoloration and moisture, so it can guarantee excellent durability for external weather changes.

Even if it is not a UV-type pattern layer, the pattern layer may be formed through a gravure printing process using a gravure roll in which an intaglio groove having a predetermined pattern or shape is formed on the surface. At this time, a pattern layer having an uneven cross-section may be formed by gravure printing on the tint printing layer 130 after filling the pattern layer forming composition in the intaglio groove. When the pattern layer is formed in this way, it is possible to express various designs, thereby improving aesthetics.

The pattern layer forming composition may include a binder material. The binder material is an epoxy resin, an acrylic resin, a polyolefin resin, a polyamide resin, a polyester resin, a polyvinyl chloride resin, a polyvinyl acetate resin, a petroleum resin, a phenol resin, a polystyrene resin, and It may contain at least one of urethane-based resins. The composition for forming a pattern layer including a binder material is filled into a gravure roll having an intaglio groove formed thereon to perform a gravure printing process. Accordingly, since the pattern layer can be formed immediately without a separate curing process later, the process can be simplified and the process time can be reduced.

In this case, when the composition for forming the pattern layer includes the same material as the binder material used for the tint printing layer 130, the interfacial characteristics between the tint printing layer 130 and the pattern layer may be improved.

The deposition layer 160 is formed under the UV pattern printing layer 150, and may be formed by chemical vapor deposition (CVD) or physical vapor deposition (PVD).

Chemical vapor deposition using a chemical reaction in the manufacturing process is an industrial method of making a thin film such as silicon on a substrate in a manufacturing process such as 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 a chemical substance with heat or light, or plasma is converted to 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 and manufactured into a solid target, volatilized with heat or an electron beam, and deposited on the substrate. At this time, the raw material is sent to 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 silk printing layer 170 is formed under the deposition layer 160 by a silk screen printing method.

Figure 2 is a flow chart showing a method of manufacturing a gradient deco film for a mobile phone according to an embodiment of the present invention. As shown in Figure 2, the method of manufacturing a mobile phone decoration film of the present invention, forming a tint printing layer 130 on the upper side of the PC layer 140; Forming a UV pattern printing layer 150 under the PC layer 140; Forming a deposition layer 160 in the form of a metal thin film under the UV pattern printing layer 150; Forming a silk-printed layer 170 under the deposition layer 160; And forming the adhesive layer 120 with an OCA film on the upper side of the tint printing layer 130 formed on the PC layer 140 and then laminating it with the lower side of the PCPMMA layer 110.

In detail, one side of the PC layer 140, which is a base film, for example, is tinted to form the tint printing layer 130 (S10), and the other side of the PC layer 140 is patterned in a UV manner. Printing to form the UV pattern printing layer 150 (S20), and sequentially forming a deposition layer 160, which is a metal thin film layer, under the UV pattern printing layer 150 by deposition (S30), and the deposition layer 160 The silk printing layer 170 is formed on the lower side of (S40).

Next, after forming the adhesive layer 120 with an OCA film on the upper side of the tint printing layer 130 formed on the upper side of the PC layer 140 in step (S10) (S50), another base film, PCPMMA layer 110 ) To be laminated with the lower side (S60).

On the other hand, after forming the adhesive layer 120 composed of the OCA film on the lower side of the PCPMMA layer 110, it may be laminated with the upper side of the tint printing layer 130 formed on the PC layer 140.

Although the present invention has been shown and described with a preferred embodiment as described above, it is not limited to the above-described embodiment, and within the scope of the spirit of the present invention, to those of ordinary skill in the art. Various changes and modifications will be possible.

110: PCPMMA layer 120: adhesive layer
130: tint printing layer 140: PC layer
150: UV pattern printing layer 150 160: deposition layer
170: silk printing layer

Claims (5)

In the mobile phone decoration film for mobile phone back cover that can improve the sharpness and gradation effect of the pattern to be formed,
PCPMMA (Polycarbonate Polymethyl methacrylate) layer 110 having a thickness of 0.64 mm;
Including; a PC (polycarbonate) layer 140 having a thickness of 0.125mm,
A tint printing layer 130 formed on the upper side of the PC layer 140 and formed by a gravure printing process using a tint printing layer 130 forming composition including a dye and a binder;
A UV pattern printing layer 150 sequentially formed under the PC layer 140; A deposition layer 160 in the form of a thin metal film; And silk printing layer 170; Including,
By forming an adhesive layer 120 on the upper side of the tint printing layer 130 formed on the upper side of the PC layer 140 and then laminating with the lower side of the PCPMMA layer 110;
The adhesive layer 120, the tint printing layer 130, the PC layer 140, the UV pattern printing layer 150, the deposition layer 160, and the silk printing layer 170 are sequentially under the PCPMMA layer 110. Having a stacked structure;
The UV pattern printing layer 150 is a layer on which a pattern is printed by using an ultra-violet printing method using liquid ink that has a property of instant curing, that is, drying immediately while being exposed to UV light. Mobile phone decoration film 100, characterized in that.
The method of claim 1,
The adhesive layer 120 is a mobile phone decoration film 100, characterized in that the OCA (Optically Clear Adhesive) film.
delete delete In the manufacturing method of a mobile phone decoration film for a mobile phone back cover that can improve the sharpness and gradation effect of the pattern to be formed,
Forming a tint printing layer 130 on the upper side of the PC layer 140;
Forming a UV pattern printing layer 150 under the PC layer 140;
Forming a deposition layer 160 in the form of a metal thin film under the UV pattern printing layer 150;
Forming a silk-printed layer 170 under the deposition layer 160; And
After forming the adhesive layer 120 with an OCA film on the upper side of the tint printing layer 130 formed on the PC layer 140, including the step of laminating with the lower side of the PCPMMA layer (110);
The adhesive layer 120, the tint printing layer 130, the PC layer 140, the UV pattern printing layer 150, the deposition layer 160, and the silk printing layer 170 are sequentially under the PCPMMA layer 110. Having a stacked structure;
The thickness of the PCPMMA layer 110 is 0.64mm;
The tint printing layer 130 is formed by a gravure printing process using a tint printing layer 130 forming composition including a dye and a binder;
The thickness of the PC layer 140 is 0.125mm;
The UV pattern printing layer 150 is a layer on which a pattern is printed by using an ultra-violet printing method using liquid ink that has a property of instant curing, that is, drying immediately while being exposed to UV light. A method of manufacturing a mobile phone decoration film, characterized in that.

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