KR20200119144A - Cellular phone decoration film and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a cellular phone decoration film and a manufacturing method thereof, and more particularly, to a PC PMMA layer-laminated decoration film and a manufacturing method thereof. The cellular phone decoration film of the present invention includes a PC PMMA layer (110) which is a layer formed of a composite sheet by compressing polycarbonate (PC) and polymethyl methacrylate (PMMA); and a PC layer (130) or PMMA layer (132), and has a structure in which an adhesive layer (120) under the PC PMMA layer (110); a PC layer (130) or PMMA layer (132) under the adhesive layer (120); a tint printing layer (140) under the PC layer (130)or the PMMA layer (132); a UV pattern printing layer (150); a metal thin film type deposition layer (160); and a silk printing layer (170) are sequentially laminated.

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 PC PMMA 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: Republic of Korea Patent Publication No. 2013-0052430 (published on May 22, 2013)

The present invention, conceived to solve the problems of the prior art as described above, has an object to provide a mobile phone decoration film and a method of manufacturing the same, which can improve the clarity and gradation effect of the pattern formed on the decoration film.

A mobile phone decoration film according to an aspect of the present invention for achieving the above-described object comprises: a PC PMMA layer, which is a layer formed of a composite sheet by compressing PC (Polycarbonate) and PMMA (Polymethyl methacrylate); And a PC layer; Or a PMMA layer; including, an adhesive layer under the PC PMMA layer; this, the PC layer or the PMMA layer under the adhesive layer, and a tint printing layer under the PC layer or the PMMA layer; UV pattern printing layer; A vapor deposition layer in the form of a metal thin film; And a silk printing layer; it is characterized in that the structure is sequentially stacked.

In addition, the adhesive layer is characterized in that it is composed of optically clear resin (Optically Clear Resin).

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 under the PC layer or the PMMA layer; Forming a UV pattern printing layer under the tint printing 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; Forming an adhesive layer made of an optical adhesive resin on the upper side of the PC layer or the PMMA layer; And laminating the PC layer or the PMMA layer on the lower side of the PC PMMA layer using the adhesive layer.

Therefore, according to the mobile phone decoration film and its manufacturing method of the present invention, there is an effect of improving the clarity and gradation effect of a pattern formed on the mobile phone decoration 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 a variety of layer structures.

In addition, due to the use of PC PMMA 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 during processing according to the thickness.

In addition, there is an effect of enhancing the adhesion between the PC PMMA composite sheet layer and the PC layer.

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 gradation deco film for a mobile phone according to an embodiment of the present invention. The mobile phone gradation deco film of the present invention includes a PC PMMA layer 110 as a base film, a PC layer 130 or a PMMA 132 layer as a back layer film, and an adhesive layer on the lower side of the PC PMMA layer 110 ( 120) is formed, a PC layer 130 or a PMMA layer 132 is formed under the adhesive layer 120, and a tint printed layer 140 is formed under the PC layer 130 or the PMMA layer 132 A UV pattern printing layer 150, a deposition layer 160 in the form of a metal thin film, and a silk printing layer 170 are formed under the tint printing layer 140.

That is, the mobile phone gradation deco film of the present invention is an adhesive layer 120, a PC layer 130, or a PMMA layer 132 on the lower side of the PC PMMA layer 110 based on the upper and lower cross-sections, as shown in FIG. The tint printing layer 140, the UV pattern printing layer 150, the deposition layer 160, and the silk printing layer 170 are sequentially stacked.

The PC PMMA layer 110, which is a base film, is formed into a composite sheet by compressing polycarbonate (PC) and polymethyl methacrylate (PMMA), and the thickness is preferably 0.5 mm.

PC is a kind of thermoplastic. 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.

PMMA, a type of special resin, is a polymer (polymer) component of methyl methacrylate, and is characterized by excellent optical properties, weather resistance, surface strength, hardness, and moldability.

As a back layer film laminated on the PC PMMA layer 110, the PC layer 130 or the PMMA layer 132 may be selectively applied, and the thickness thereof is preferably 0.07 to 0.125 mm.

As a material of the adhesive layer 120 used to bond the base film and the back layer film, a transparent liquid type optically adhesive resin (optically clear resin (OCR) or liquid optically clear adhesive (LOCA)) is used.

Photo-adhesive resin is applied as a means to solve problems such as the possibility of bubble formation when applying the substrate of a transparent double-sided tape-type optically clear adhesive (OCA), and the decrease in the ability to fill in steps due to printing of the cover window. .

The tint printing layer 140 is formed on the PC layer 130 or the PMMA layer 132, 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 140 used at this time includes a dye and a binder. As the tint printing layer 140 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 the 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.

The UV pattern printing layer 150 is a layer on which a pattern is printed under the tint printing layer 140 by an Ultra-Violet Printing method.

Unlike general commercial papers, which are widely used for printing paper, materials such as Ban, Eunji, and PP have poor ink permeability unlike regular papers, so the drying speed of the ink after printing is slow, Ⅹ?, and ink bleeding. There is a problem with the printout being bad.

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 140 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 in 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 140, the interfacial characteristics between the tint printing layer 140 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, and 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.

On the other hand, the manufacturing method of the mobile phone decoration film of the present invention, the steps of forming a tint printing layer 140 on the lower side of the PC layer 130 or the PMMA layer 132; Forming a UV pattern printing layer 150 under the tint printing 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; By forming an adhesive layer 120 made of a photo-adhesive resin on the upper side of the PC layer 130 or the PMMA layer 132, the PC layer 130 or the PMMA layer 132 is formed on the lower side of the PC PMMA layer 110. It includes; laminating step.

Figure 2 is a flow chart showing a method of manufacturing a gradation decorating film for a mobile phone according to an embodiment of the present invention. As shown in FIG. 2, the PC layer 130 or the PMMA layer 132, which is a back layer film, is tinted on one side of the lower side to form a tint printing layer 140 (S10), and a tint printing layer UV pattern printing layer 150 is formed by pattern printing on the lower side of 140 (S20), and deposition layer 160, which is a metal thin film layer, is sequentially formed under the UV pattern printing layer 150 by evaporation. And (S30), to form a silk print layer 170 under the deposition layer 160 (S40).

Next, after forming the adhesive layer 120 by applying an optical adhesive resin (OCR) on the upper side of the PC layer 130 or the PMMA layer 132 (S50), and the lower side of the PC PMMA layer 110 as a base film Let it be laminated (S60).

Meanwhile, the adhesive layer 120 may be formed on the lower side of the PC PMMA layer 110 and then laminated to the upper side of the PC layer 140 or the PMMA layer 132.

Meanwhile, the PC layer 130 or the PMMA layer 132 is tinted to form a tint printing layer 140 on the lower side, and an adhesive layer 120 is formed under the PC PMMA layer 110, and the PC PMMA layer After laminating 110 with the PC layer 140 or the PMMA layer 132, the UV pattern printing layer 150, the deposition layer 160, and the silk printing layer 170 under the tint printing layer 140 May be formed sequentially.

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: PC PMMA layer
120: adhesive layer
130: PC layer
132: PMMA layer
140: tint printing layer
150: UV pattern printing layer
160: vapor deposition layer
170: silk printing layer

Claims (3)

In the mobile phone decoration film,
A PC PMMA layer 110, which is a layer formed into a composite sheet by compressing polycarbonate (PC) and polymethyl methacrylate (PMMA); And
Including; PC layer 130 or PMMA layer 132;
An adhesive layer 120 on the lower side of the PC PMMA layer 110; This,
The PC layer 130 or the PMMA layer 132 under the adhesive layer 120,
A tint printing layer 140 under the PC layer 130 or the PMMA layer 132; UV pattern printing layer 150; A deposition layer 160 in the form of a metal thin film; And silk printing layer 170; Mobile phone decoration film 100, characterized in that the sequentially stacked structure.
The method of claim 1,
The adhesive layer 120 is a mobile phone decoration film 100, characterized in that composed of a light-adhesive resin (Optically Clear Resin).
In the manufacturing method of the mobile phone decoration film,
It includes a PC PMMA layer 110, which is a layer formed into a composite sheet by compressing PC (Polycarbonate) and PMMA (Polymethyl methacrylate),
Forming a tint printing layer 140 under the PC layer 130 or the PMMA layer 132;
Forming a UV pattern printing layer 150 under the tint printing 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;
By forming an adhesive layer 120 composed of an optical adhesive resin on the upper side of the PC layer 130 or the PMMA layer 132,
Laminating the PC layer 130 or the PMMA layer 132 under the PC PMMA layer 110; manufacturing method of a mobile phone decoration film comprising a.

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