KR101986436B1 - Privacy film roll-to-roll manufacturing system - Google Patents

Abstract

A security film roll-to-roll manufacturing system according to an embodiment comprises: a polymer coating module for forming a polymer coating layer on a pattern embossed part of a film on which the pattern is formed; a light blocking material injecting module for injecting a light blocking material into a pattern engraved part of the film on which the pattern is formed; and a thin film coating module for coating a thin film on the film on which the pattern is formed. The film on which the pattern is formed is supplied continuously, and the coating module is in a form of a rotating roll. As the coating module rotates, the film on which the pattern is formed can pass through the polymer coating module, the light blocking material injecting module, and the thin film coating module.

Description

[0001] PRIVACY FILM ROLL-TO-ROLL MANUFACTURING SYSTEM [0002]

 A roll-to-roll manufacturing system for secure film production is disclosed. Specifically, a system capable of producing a viewing angle control type information security film by a roll-to-roll method is disclosed.

The frequency of external use of personal information devices is greatly increased in real life, and personal information output through the screen of information devices is easily exposed to the surrounding people. This greatly affects the infringement of personal privacy, and in order to solve such a problem, there is an increasing need for a product that can prevent personal information leakage.

One of the products that can not be selectively viewed from the side as needed while maintaining a large display size and a wide viewing angle is an information protection film.

The conventional production method of such an information protection film is difficult to enlarge the information protection film and requires a high production cost. Further, at the time of injecting the light shielding material which prevents the characters from being visually recognized on the display according to the viewing angle, the light shielding material does not completely enter between the patterns of the information protective film, or the transmittance of the information protection film is lowered do.

An example of a method for producing such an existing information protective film is disclosed in Korean Patent Application No. 2008-0008997 entitled " Method for manufacturing a viewing angle limiting film ".

An object of an embodiment is to provide a security film roll to roll manufacturing system that simplifies the manufacturing process of a security film having a limited viewing angle.

Another object of the present invention is to provide a security film roll to roll manufacturing system capable of manufacturing a large security film while maintaining a wide viewing angle.

Another object of the present invention is to provide a security film roll-to-roll manufacturing system capable of reducing the production cost of a security film.

Another object according to an embodiment is to provide a security film roll to roll manufacturing system capable of improving the production speed of a security film.

Another object of the present invention is to provide a security film roll to roll manufacturing system capable of producing a security film by effectively injecting light shielding material into a security film so as to prevent a reduction in transmittance due to light-shielding substances remaining on the security film surface.

Another object of the present invention is to provide a security film production system capable of producing a security film so as to prevent deterioration of optical characteristics due to light shielding materials.

Another object of the present invention is to provide a security film manufacturing system that improves optical characteristics by coating an antireflection multilayer film on a security film.

According to another aspect of the present invention, there is provided a security film roll to roll manufacturing system including a polymer coating module for forming a polymer coating layer on a pattern embossing portion of a patterned film, And the patterned film is supplied continuously, and the coating module is in the form of a rotating roll, and the film on which the pattern is formed according to the rotation of the coating module is coated on the polymer coating Module and the light mineral injection module.

According to another aspect of the present invention, there is provided a security film roll-to-roll manufacturing system, wherein a polymer coating solution for forming the polymer coating layer is transferred to a pattern embossed portion of the patterned film while the roll of the polymer coating module rotates, can do.

The polymer coating layer formed on the pattern embossing portion of the security film roll to roll manufacturing system according to an embodiment of the present invention may be hydrophobic.

According to another aspect of the present invention, there is provided a security film roll to roll manufacturing system, comprising: a blade for pressing a dark mineral introduced into a pattern engraved portion of a film formed with the pattern, .

According to another aspect of the present invention, there is provided a security film roll to roll manufacturing system including a lamp for irradiating light to a light source material injected into a pattern engraved portion of the patterned film.

According to another aspect of the present invention, there is provided a security film roll to roll manufacturing system including a thin film coating module for coating a thin film on a patterned film, And passes through the thin film coating module after passing through the light shielding material injection module according to the rotation of the thin film coating module.

The thin film coating module of the security film roll to roll manufacturing system according to an embodiment of the present invention for achieving the above object is characterized in that after the light shielding material is injected into the pattern engraved portion, Materials can be stacked in multiple layers.

The thin film coating module of the security film roll to roll manufacturing system according to an embodiment for achieving the above object can stack the low refractive material and the high refractive material in multiple layers by a sputtering method or a wet method.

According to the security film roll to roll manufacturing system according to one embodiment, the manufacturing process of the security film having a limited viewing angle can be simplified.

In addition, according to the security film roll to roll manufacturing system according to an embodiment, a large security film can be manufactured while maintaining a wide viewing angle.

In addition, according to the security film roll to roll manufacturing system according to the embodiment, the production cost of the security film can be reduced.

In addition, according to the security film roll to roll manufacturing system according to the embodiment, the production speed of the security film can be improved.

In addition, according to the security film roll to roll manufacturing system according to an embodiment, it is possible to provide a security film preparation process in which a light shielding material is effectively injected into a security film to prevent a reduction in transmittance due to light shielding materials remaining on the security film surface .

In addition, according to the security film roll to roll manufacturing system according to the embodiment, the security film can be produced so as to prevent the optical property from being deteriorated by the light shielding material.

In addition, according to the security film roll to roll manufacturing system according to an embodiment, the anti-reflection multilayer thin film can be coated on the security film to improve the optical characteristics.

1 is a schematic diagram of a security film roll to roll manufacturing system according to one embodiment.
Figure 2 illustrates a coating module of a security film roll to roll manufacturing system according to one embodiment.
3 is a schematic diagram of a security film roll to roll manufacturing system to which a multilayer thin film coating according to one embodiment is applied.
4 is a cross-sectional view of a security film made with a security film roll to roll manufacturing system according to an embodiment.

Hereinafter, embodiments will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different drawings. In the following description of the embodiments, detailed description of known functions and configurations incorporated herein will be omitted when it may make the best of an understanding clear.

In describing the components of the embodiment, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, Quot; may be " connected, " " coupled, " or " connected. &Quot;

Figure 1 is a schematic diagram of a security film roll to roll manufacturing system 100 according to one embodiment and Figure 2 illustrates a coating module 120 of a security film roll to roll manufacturing system 100 according to one embodiment, Is a schematic diagram of a security film roll to roll manufacturing system 100 to which a multilayer thin film coating according to one embodiment is applied.

4 is a cross-sectional view of a security film made with a security film roll to roll manufacturing system according to an embodiment.

1 to 3, the security film roll to roll manufacturing system 100 may include a coating module 120 and a light mineral injection module 130.

The security film roll to roll manufacturing system 100 may further include a rubus pattern forming module wherein the rubus pattern forming module includes a louver pattern on a PET film 110 that is continuously fed (e.g., roll) Can be formed. That is, the film 110 in which the RUBBER pattern is formed may have the embossed portion 112 and the engraved portion 114, and the film is continuously supplied to the security film roll to roll manufacturing system 100, .

In the security film roll to roll manufacturing system 100, for example, a film 110 in the form of a roll may be installed. The film 110 may be a PET film, and a pattern may be formed on one side of the film. The film 110 may be continuously provided to the coating module 120 and the film 110 disposed on the coating module 120 may be continuously supplied to the lightening material injection module 130 in accordance with the rotation of the coating module 120 You can head. That is, the film 110, which is moved by the rotation of the coating module 120, may pass through the coating module 120 and the coal mining injection module 130.

The coating module 120 may form a polymer coating layer (self-assembled monolayer) 1222 on the pattern embossing 112 of the patterned film 110. This coating module 120 may include a SAM solution reservoir 122, a rotary pressing roll 124, and a coating roll 126.

The rotary pressing roll 124 and the coating roll 126 are rotatable at the same time and the rotary pressing roll 124 and the coating roll 126 simultaneously rotate in different directions so that the rotary pressing roll 124 and the coating roll 126 May be moved in the direction of the light-shielding material injection module 130.

2, the SAM solution reservoir 122 may store the SAM solution (the SAM solution may be a hydrophobic solution) 1222, and may supply the SAM solution 1222 to the coating roll 126. The coating roll 126 and the embossed portion 112 of the film 110 may abut and the coating roll 126 and the film 110 are strongly pressed by the pressure of the rotary pressing roll 124, The SAM solution 1222 adhered to the surface of the film 110 may be transferred onto the embossed portion 112 of the film 110.

1 to 3, for example, the SAM solution reservoir 122 may have a cylindrical shape with an open top, and a SAM solution 1222 may be provided in the SAM solution reservoir 122. The coating roll 126 may be partially immersed in the SAM solution 1222 in the SAM solution reservoir 122. [ That is, the SAM solution 1222 is attached to the surface of the coating roll 126.

In addition, the coating roll 126 and the rotary pressing roll 124 may be disposed adjacent to each other, and the coating roll 126 or the rotary pressing roll 124 may be rotated. When a portion of the elongated film 110 is sandwiched between the coating roll 126 and the rotary pressing module 124, the film 110 is transferred to the coating roll 126 and the rotary pressing roll 124 And when the coating roll 126 or the rotary pressing roll 124 rotates while the film 110 is pressed, the other coating roll 126 or the rotary pressing roll 124 are rotated together and the film 110 Can be moved. As the film 110 moves, portions of the film 110 passing between the coating roll 126 and the rotary pressing roll 124 are pressed.

Thus, during rotation of the rotary pressing roll 124 and the coating roll 126, the film 110 is continuously pressurized passing between the coating roll 126 and the rotary pressing roll 124, The attached SAM solution 1222 can be transferred to the embossed portion 112 of a portion of the film 110 passing through the coating module 120. [

The coating roll 126 of the coating module 120 may be of a nanoimprint type capable of uniformly applying an appropriate pressure between the coating roll 126 and the film 110. [

The light mineral injection module 130 may be, for example, an injector that emits light shielding material 116. The light mineral injection module 130 may spray the light shielding material 116 onto the film 110 through the coating module 120 and onto the film 110 reaching the light mineral injection module 130. Referring to FIG. 4, the light shielding material 116 injected in the direction of the film 110 may enter the engraved portion 114 formed on the film 110.

The light mineral material 116 may be composed of CuO, graphite, mica, or the like.

The SAM solution transferred onto the film 110 by the coating module 130 has a hydrophobic property so that the light shielding material injection module 130 efficiently injects the light shielding material between the engraved portions 114 of the film 110 .

1 and 3, a security film roll to roll manufacturing system 100 according to an embodiment may further include a blade 140, a lamp 150, and a thin film coating module 160.

The film 110 passing through the coating module 120 and the light mining material injection module 130 may be advanced toward the thin film coating module 160 and the blade 110 may be advanced between the thin wall coating material injection module 130 and the thin film coating module 160 140 and a lamp 150 may be disposed.

The blade 140 may be disposed such that one end thereof is in contact with one side of the film 110. That is, depending on the movement of the film 110, one end of the blade 140 can press the surface of the film 110 to which the shielding material 116 is attached.

One end of the blade 140 can not be introduced into the engraved portion 114 of the film 110 and the light shielding material 116 remaining on the surface of the film 110 can be separated from the engraved portion 114 of the film 110 ).

The blades 140 may also infiltrate and pressurize the residual dark matter on the film 110 into the engraved portion 114 of the film 110 to flatten the surface of the film 110.

The lamp 150 may be disposed between the blade 140 and the thin film coating module 160 and irradiates light onto the surface of the film 110 organized by the blades 140 so that the intaglio of the film 110 The light shielding material 116 filled in the portion 114 can be photo-sintered.

The film 110 having the surface of the film 110 being flattened and the light shielding material 116 being sintered through the blade 140 and the lamp 150 is moved by the rotation of the coating module 120, 160 < / RTI >

For example, lamp 150 may be a xenon lamp.

The thin film coating module 160 may be laminated on the film 110 so that a low refraction material and an anti-reflection thin film formed of a high-refraction material are formed in multiple layers. The thin film coating module 160 can laminate a low refractive index material and a high refractive index material in multiple layers by using a dry method (sputtering method) or a wet method. Alternatively, the thin film coating module 160 may use a vacuum deposition method, a coating method, or the like to deposit a thin film on the film 110.

Referring to FIG. 4, for example, a thin film coating using a dry method (sputtering) is formed by sputtering a film according to a ratio of argon gas and oxygen partial pressure using an RF magnetron sputtering apparatus to form a multilayer thin film structure layer 118) can be collectively formed. In the sputtering process, optimal conditions can be derived by using argon gas amount, RF power, deposition time, and the like as parameters. At this time, the high refractive index material may be TiO ₂ , ZnO, ZrO ₂ , and the low refractive index material may be MgF ₂ , SiO ₂ .

Further, a thin film coating using a wet process can use a solution such as a sol or a paste.

The security film roll to roll manufacturing system 100 according to an embodiment of the present invention can improve the manufacturing process of the security film that can protect the information of the personal terminal screen by limiting the viewing angle.

Specifically, the security film roll-to-roll manufacturing system according to one embodiment can be configured in a roll-to-roll manner and can simplify the manufacturing process, and a relatively large security film can be produced. In addition, it is possible to reduce the production cost of the security film and improve the production speed of the security film by the non-stop process.

The security film produced by the roll-to-roll security film dispensing system according to an embodiment of the present invention can effectively prevent the deterioration of the transmittance due to the light shielding material remaining on the surface of the security film, It is possible to prevent the optical properties from being deteriorated due to the secondary minerals. In particular, the optical characteristics can be improved by repeatedly laminating a low refractive index material and a high refractive index material on a security film and coating an antireflection multilayer thin film.

Although the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, And various modifications and changes may be made thereto without departing from the scope of the present invention. Accordingly, the spirit of the present invention should not be construed as being limited to the embodiments described, and all of the equivalents or equivalents of the claims, as well as the following claims, belong to the scope of the present invention .

100: Security film roll to roll manufacturing system
110: Film
112: Embossed portion
114:
116: Tea Minerals
118: multilayer thin film
120: Coating module
122: SAM solution reservoir
1222: SAM solution
124: rotary pressing roll
126: roll
130: car mining injection module
140: blade
150: lamp
160: Thin film coating module

Claims (8)

A polymer coating module for forming a polymer coating layer on the pattern embossing portion of the patterned film; And
A light-shielding material injecting module for injecting light-shielding material into a pattern engraved portion of the patterned film;
/ RTI >
Wherein the patterned film is fed continuously and the coating module is in the form of a rotating roll and the patterned film is passed through the polymer coating module and the dark matter injection module as the coating module rotates, Film roll to roll manufacturing system.
The method according to claim 1,
Wherein the polymer coating solution forming the polymer coating layer is transferred to the pattern embossing portion of the patterned film while the roll of the polymer coating module rotates.
The method according to claim 1,
Wherein the polymer coating layer formed on the pattern embossing portion is hydrophobic.
The method according to claim 1,
Further comprising a blade which presses the light shielding material injected into the pattern engraving portion of the patterned film and pushes the light shielding material into the pattern engraving portion.
The method according to claim 1,
Further comprising a lamp for irradiating light to the light-shielding material injected into the pattern engraved portion of the patterned film.
The method according to claim 1,
Further comprising a thin film coating module coating a thin film on the patterned film,
Wherein the patterned film passes through the thin film coating module after passing through the coating material immersion module according to the rotation of the coating module.
The method according to claim 6,
Wherein the thin film coating module is a multilayer laminate of a low refractive material and a high refractive material on the patterned film after the light shielding material is injected into the pattern intaglio.
The method according to claim 6,
Wherein the thin film coating module is a multilayer laminate of a low refractive material and a high refractive material by a sputtering method or a wet method.

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