KR20200072231A - Cellular phone decoration film and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a decoration film for a mobile phone to increase clarity and gradation effects of a pattern formed thereon, and to a manufacturing method thereof. More specifically, the present invention relates to a decoration film having a polymethyl methacrylate (PMMA) layer laminated thereon and a manufacturing method thereof. According to the present invention, the decoration film for a mobile phone comprises: a polycarbonate polymethyl methacrylate (PCPMMA) layer (110); a PC layer (140); a tint printing layer (130) formed on the upper side of the PC layer (140); and an ultraviolet (UV) printing layer (150), a deposition layer (160) in a metal thin film form, and a silkscreen printing layer (170) sequentially formed on the lower side of the PC layer (140). Moreover, after an adhesive layer (120) is formed on the upper side of the tint printing layer (130) formed on the upper side of the PC layer (140), the adhesive layer (120) is laminated on the lower side of the PCPMMA layer (110), and thus the decoration film is formed.

Description

Cellular phone decoration film and manufacturing method thereof

The present invention relates to a mobile phone decoration film and a method for manufacturing the same, and more particularly, to a decoration film on which a PCPMMA layer is laminated and a method for manufacturing the same.

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') are being released.

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

Accordingly, in recent years, not only the protection of mobile phone products, but also the development of technology for mobile phone films to improve aesthetics has been actively conducted. Mobile phone films are in various demands for the color, luster, and pattern (ie, pattern) of films to suit the tastes of modern people with various personalities.

Republic of Korea Patent Publication No. 2013-0052430 discloses an epoxy protective film for a mobile phone and a manufacturing method thereof. The manufacturing method of the epoxy protective film for the mobile phone is a step of preparing a transparent sticker fabric used as a normal transparent film for a mobile phone, performing a normal UV offset printing on the transparent sticker fabric, and then performing a normal UV coating, the transparent film Step of applying an epoxy resin on one side of the step, the transparent film coated with the epoxy resin is transferred to a heat dryer and heat-treated 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. , Cooling the epoxy protective film at room temperature for 4 to 6 hours, and then taking it out of a dryer to complete the epoxy protective film, and individually packaging the epoxy protective film.

However, in the case of the above-mentioned prior art, as the UV coating is performed after UV offset printing, the ink image must be transferred to the blanket by printing on the surface of the printing plate and printed on the adhered material again. Since it includes a heat treatment and drying process, the process is not only complicated, but also takes a long time.

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, and thus there is a disadvantage in that uniform pattern transition is difficult during the transfer process.

Patent Literature: Republic of Korea Patent Publication No. 2013-0052430

The present invention, devised to solve the problems of the prior art, provides a mobile phone decoration film and a method for manufacturing the same, which can lower the manufacturing cost of the decoration film and improve the clarity and gradation effect of the pattern formed on the film. There is a purpose.

A cell phone decoration film, which is an aspect of the present invention for achieving the above object, is a PCPMMA (Polycarbonate Polymethyl methacrylate) layer; It includes a PC (Polycarbonate) layer, a tint print 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 metal thin film; And a silk printing layer, characterized in that it is formed by forming an adhesive layer on the upper side of the tint printing layer formed on the upper side of the PC layer and then laminating with the lower side of the PCPMMA layer.

In addition, the adhesive layer is characterized in that the optically clear adhesive (OCA) 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, another method of manufacturing a mobile phone decoration film of another aspect of the present invention, forming a tint print 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 print layer formed on the PC layer, and then laminating with the lower side of the PCPMMA layer.

Therefore, according to the mobile phone decoration film and the manufacturing method of the present invention, it is possible to lower the manufacturing cost of the mobile phone decoration film and improve the clarity and gradation effect of the pattern formed on the film.

In addition, there is an effect capable of realizing various layer structures as compared with the case where the printing is performed on the PC layer and tint printing is performed on the PET layer.

In addition, due to the use of a PCPMMA material other than the existing PMMA material, cracks and cracks are suppressed when implementing a three-dimensional shape of the back cover, and there is an effect that the pattern is not exposed to the outside during 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 process diagram showing a method of manufacturing a mobile phone decoration film according to an embodiment of the present invention.

The terms or words used in the specification and claims should not be interpreted as being limited to ordinary or lexical meanings, and the inventor can appropriately define the concept of terms in order to explain his or her invention in the best way. Based on the principle that it should be interpreted as meanings and concepts consistent with the technical spirit of the present invention.

Therefore, the configuration shown in the embodiments and drawings described in this specification is only one of the most preferred embodiments of the present invention and does not represent all of the technical spirit of the present invention, and thus can replace them at the time of application. It should be understood that there may be equivalents and variations.

Hereinafter, preferred 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 decorative film for a mobile phone according to an embodiment of the present invention. As shown in Figure 1, the mobile phone gradient decorative 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 A tint print layer 130 formed on the; UV pattern printing layer 150 formed on the lower side of 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. It comprises 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, and adheres to the upper side of the tint printing layer 130 formed on the upper side of the PC layer 140. After forming the layer 120, it is formed by laminating with the lower side of the PCPMMA layer 110.

That is, the mobile phone gradient decorative 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.

The base film PCPMMA (Polycarbonate Polymethyl methacrylate) layer 110 is a kind of special resin, and is a polymer (polymer) component of methyl methacrylate, and has excellent optical properties, weather resistance, surface strength, hardness, formability, etc. It is characteristic.

Another base film, PC (Polycarbonate) layer 140, is a kind of thermoplastic. It has characteristics such as impact resistance, heat resistance, weather resistance, self-extinguishing property, and transparency, and has an impact degree of about 150 times or more that of tempered glass, so it has excellent flexibility and processability. It is a substitute for acrylic that is easily broken and deformable, and is often used as a supplement to ordinary plate glass.

The tint printing layer 130 is formed on one side of the PC layer 140 or is formed on one side of the PCPMMA layer 110, and 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, a separate heat treatment and drying process is not required, thereby simplifying the process and reducing the process time.

The dye may include at least one red-based 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-based 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. Blue-based dyes may be included. However, the dye that can be used as the dye is not limited, and a dye capable of exhibiting a predetermined color in a mobile phone film can be used without limitation.

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

As the adhesive layer 120 formed by being applied to one side of the tint printing layer 130, a roll type optically clear adhesive (OCA) film may be used, and the OCA film is an optically transparent adhesive film and is a smart device including a mobile phone. It plays the role of transmitting the electric signal between the touch screen and LCD or OLED.

The UV pattern printing layer 150 is a layer on which a pattern is printed by an ultra-violet printing method on one side of the PC layer 140.

Unlike general commercial papers, which are frequently used as printing paper, materials such as banned, silver, and PP do not have good ink permeability unlike ordinary papers, so the drying speed of the ink after printing is slow and there is noise and ink is generated. There is a problem of smearing and poor print quality.

The UV printing method is a method to compensate for the above problems. It uses a dedicated liquid ink that has the property of instant curing, that is, drying immediately upon exposure to UV light. It can express various colors and is resistant to discoloration and moisture, so it can guarantee excellent durability in external weather changes.

Even if it is not a UV pattern layer, the pattern layer may be formed through a gravure printing process using a gravure roll having an intaglio groove having a predetermined pattern or shape on the surface. At this time, after filling the pattern layer forming composition into the intaglio groove, a pattern layer having a concavo-convex shape may be formed by gravure printing on the tint printing layer 130. When the pattern layer is formed as described above, various design expressions are possible, thereby improving aesthetics.

The pattern layer forming composition may include a binder material. The binder material is an epoxy resin, acrylic resin, polyolefin resin, polyamide resin, polyester resin, polyvinyl chloride resin, polyvinyl acetate resin, petroleum resin, phenol resin, polystyrene resin, and It may contain at least one of urethane-based resin. The gravure printing process may be performed by filling the pattern layer forming composition containing the binder material in a gravure roll having a negative groove formed on the surface. Accordingly, it is possible to form a pattern layer immediately without a separate curing process later, thereby simplifying the process and reducing the process time.

At this time, when the pattern layer forming composition includes the same material as the binder material used for the tint printing layer 130, the interfacial properties 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 of silicon or the like on a substrate in a manufacturing process such as IC. It is used to make silicon oxide film, silicon nitrogen film, amorphous silicon thin film, etc. When heat or light is applied to a gas containing chemicals, or plasma is generated at a high frequency, the raw material is radicalized, which greatly increases reactivity, adsorbed on a substrate and deposited.

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

The silk printing layer 170 is formed on the lower side of the deposition layer 160 by a silk screen printing method.

Figure 2 is a process diagram showing a method for producing a gradient decorative film for a mobile phone according to an embodiment of the 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 printing layer 170 under the deposition layer 160; And forming an 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.

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

Next, after forming the adhesive layer 120 with the OCA film on the upper side of the tint print 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 made of an 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.

The present invention has been shown and described with reference to preferred embodiments as described above, but is not limited to the above-described embodiments and is within the scope of the present invention to those skilled in the art to which the present invention pertains. By doing so, various changes and modifications will be possible.

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

Claims (5)

In the cell phone decoration film,
PCPMMA (Polycarbonate Polymethyl methacrylate) layer 110;
PC (Polycarbonate) layer 140; includes,
A tint printing layer 130 formed on the PC layer 140;
A UV pattern printing layer 150 sequentially formed under the PC layer 140; A deposition layer 160 in the form of a metal thin film; And a silk printing layer 170;
After forming the adhesive layer 120 on the upper side of the tint printing layer 130 formed on the upper side of the PC layer 140, the mobile phone decoration film (characterized in that formed by laminating with the lower side of the PCPMMA layer 110) 100).
According to claim 1,
The adhesive layer 120 is a cell phone decoration film 100, characterized in that the OCA (Optically Clear Adhesive) film.
According to claim 1,
The thickness of the PCPMMA layer 110 is 0.64mm, characterized in that the mobile phone decoration film (100).
According to claim 1,
The thickness of the PC layer 140 is 0.125mm, characterized in that the mobile phone decoration film 100.
In the manufacturing method of the mobile phone decoration film,
Forming a tint print layer 130 on top 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 printing layer 170 on the lower side of the deposition layer 160; And
And forming an 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. Method of manufacturing a decoration film.

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