KR20220150079A - Manufacturing method of graphic embedded privacy film - Google Patents

Abstract

The present invention relates to a graphic-embedded privacy film characterized by comprising the configuration described in the detailed description. It is a task to solve the problem of providing the printing device including a surface treatment function capable of high-resolution printing on materials that cannot be directly printed.

Description

Manufacturing method of graphic embedded privacy film {Manufacturing method of graphic embedded privacy film}

The present invention relates to a method of making a graphic interleaved privacy film.

In the first half of this specification, there are many materials that do not absorb ink on the surface, but for convenience of description, a silicone material relatively familiar to those skilled in the art among these materials will be described as an example.

Currently, a silk screen printing method is widely used as a method of printing on a silicone material.

In this case, the ink used is a high-viscosity offset ink for silicon, and printing is performed by attaching the ink to the silicon material at a high temperature of 200° C. or higher.

In other words, the conventional silicone material printing is not printed with ink absorbed into the paper as in the method of printing on paper in general, but only so that the ink is not absorbed into the silicone material and is only attached to a certain thickness on the silicone material. Therefore, the attached ink is easy to peel from the silicone material, and when the expansion and contraction are repeatedly performed due to the nature of the silicone material, there is a problem in that the separation of the ink and the silicone material becomes more serious.

In addition, since the conventional silicon material printing is a method of printing 1 degree per color through silk screen printing using offset ink as described above, not only printing with complicated degrees such as gradation, but also high-resolution expression using inks of various colors This is impossible.

In addition, since high-viscosity ink is used to increase adhesion on a silicone material in the prior art, there is a disadvantage that only a glossy (glossy) surface due to the high-viscosity ink is possible through silicone printing.

Furthermore, in the case of using the silk screen printing method on the conventional silicone material, it was essential to include a primer (adhesive) component harmful to the human body in order to attach the ink to the silicone surface. There was a problem that harmful primer components remained.

An object of the present invention is to provide a printing apparatus including a surface treatment function capable of high-resolution printing on a material that cannot be directly printed.

In addition, in the present invention, when using a silk screen printing method on a conventional silicone material, it was essential to include a primer (adhesive) component harmful to the human body in order to attach the ink to the silicone surface, An object of the present invention is to provide a printing device including a surface treatment function capable of high-resolution printing that prevents the residual primer component harmful to the human body.

In order to solve the above problems, the present invention includes a surface treatment unit for treating the surface of a material that cannot be directly printed, a measuring unit for measuring the surface characteristics of the material treated by the surface treatment unit, and a printing unit for printing directly on the material It is intended as a means of solving the problem to provide a printing apparatus, characterized in that.

In addition, the surface treatment unit includes the at least one electrode, and the at least one electrode is a multi-electrode double-sided plasma device disposed above and below the material. do it with

In addition, a contact angle of the surface-treated material in the surface treatment unit is to provide a printing device, characterized in that 0 ° to 50 ° as a means of solving the problem.

In addition, as a means of solving the problem to provide a printing device, characterized in that the surface roughness of the material surface-treated in the surface treatment unit is 0.3a to 0.9a.

In addition, as a means of solving the problem to provide a printing device, characterized in that 42 dyne / cm when the dyne pencil is applied to the material surface-treated in the surface treatment unit.

In addition, it is to provide a printing device comprising a preheating unit for preheating the material before printing in the printing unit and a drying unit for drying the material after being printed by the printing unit as a means of solving the problem.

In addition, the measuring unit, a contact angle measuring unit for measuring the contact angle of the material, the roughness measuring unit for measuring the roughness of the material, and a surface tension measuring unit for measuring the surface tension of the material Printing apparatus characterized in that it comprises is provided as a means of solving the problem.

The present invention may provide a printing apparatus including a surface treatment function capable of high-resolution printing on a material that cannot be directly printed.

In addition, in the present invention, when using a silk screen printing method on a conventional silicone material, it was essential to include a primer (adhesive) component harmful to the human body in order to attach the ink to the silicone surface, It is possible to provide a printing device including a surface treatment function capable of high-resolution printing that prevents the residual primer component harmful to the human body.

1 is a perspective view showing a plasma apparatus for surface treatment of the present invention.
2 is a perspective view showing a processing unit, a transfer device, and a plasma electrode device.
3 is a perspective view showing a roller of the conveying device shown in FIG.
FIG. 4 is a view taken along line AA of FIG. 1 .
FIG. 5 is a perspective view illustrating the frame shown in FIG. 1 ;
Fig. 6 shows the operation of the frame shown in Fig. 1;
FIG. 7 shows various embodiments of the plasma electrode shown in FIG. 1 .
FIG. 8 shows the internal operating state of the entry unit shown in FIG. 1 .
9 is a block diagram of a printing apparatus including a surface treatment function according to an embodiment of the present invention.
10 is a diagram illustrating a process of printing on a material that cannot be directly printed by using a printing apparatus including a surface treatment function according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings. The same reference numerals are used for the same components in the drawings, and repeated descriptions of the same components are omitted. And, it should be understood that the present invention may be implemented in many different forms and is not limited to the described embodiments.

1 is a perspective view showing a plasma apparatus for performing a surface treatment of the present invention.

Referring to FIG. 1 , the plasma apparatus 100 for performing the surface treatment of the present invention includes a plasma processing unit 110 , a blower 150 , an exhaust unit 160 , an entry unit 170 , and an exhaust unit 180 . may include.

First, the plasma processing unit 110 is a place that is processed by plasma while moving the material (a).

The plasma processing unit 110 is formed as a closed space, the material (a) is input to one side of the closed space, and the plasma surface-treated material is discharged to the other side.

In addition, a transfer device 120 and a plasma electrode device 130 for moving a material are provided between one side and the other side of the plasma processing unit 110 .

Preferably, the bottom surface of the plasma processing unit 110 is provided with a base plate 112 partitioned from the blower 150 , and side plates for sealing the plasma processing unit 110 are provided on both sides and upper portions of the plasma processing unit 110 . and a cover 111 composed of a ceiling plate may be installed.

More preferably, the cover 111 may be made of a transparent acrylic plate so that the inside is projected.

FIG. 2 is a perspective view showing a processing unit, a transport device, and a plasma electrode device, FIG. 3 is a perspective view showing a roller of the transport device shown in FIG. 1 , and FIG. 4 is a view taken along line A-A of FIG. 1 .

Referring to FIGS. 2 to 4 , the conveying device 120 may include a plurality of rollers 121 , which rotate in engagement with each other in the top and bottom as shown in FIG. 2 .

The rollers 121 are continuously provided from the inlet side to the outlet side of the plasma processing unit 110 , and are fixed to the side plate of the cover 111 and may be driven by a conventional power transmission means.

The normal power transmission means is connected to one end or the other end of each roller 121 by a chain, belt, or gear, and the chain, belt, or gear is rotated by a motor.

As shown in FIG. 3 , the rollers 121 are made of a silicone material having a relatively high frictional force, and the surface of the outer shell is embossed (122).

The embossing 122 may be formed in a protrusion shape or may be formed in a straight shape.

Meanwhile, a timing belt pulley 123 is formed at the edges of the rollers 121 , and the timing belt pulley 123 may be provided to fasten the timing belt.

At this time, as shown in FIG. 4 , a magnet M is embedded in the timing belt, and in the vicinity where the upper and lower timing belts 124 abut, they are attached to each other by magnetic force.

That is, the material (a) plasma-treated while passing between the rollers 121 is strongly adhered by the magnetic force between the timing belts 124 while passing between the timing belts 124 so that even a thin material does not spin in vain. (124) grabs it and transfers it.

1 and 2, in the plasma electrode device 130, the electrode 131 is provided between the rollers 121 arranged in the transverse direction. The electrode 131 may be provided to be vertically spaced apart from the roller 121 .

That is, when the material passes between the rollers 121 , the upper and lower electrodes 131 react at the upper and lower sides of the material to perform plasma treatment on the upper and lower surfaces of the material.

In order for the electrodes 131 to be disposed between the rollers 121 , a frame 140 spaced up and down by a predetermined distance is provided along the edge of the processing unit 110 .

The frame 140 is for placing the electrodes 131 therein, and a plurality of guide rods 141 for supporting the frame 140 and a gap adjusting means 142 for adjusting the vertical spacing of the frame 140 are further provided. can be provided.

At this time, a scale may be formed on the guide rod 141 to check the interval between the frames 140 .

And, the gap adjusting means 142 is fixed to the base plate 112 while being screwed to the frame 140 as shown in FIG. 6 , and the lower end of the gap adjusting means 142 is the base plate 112 . It may be provided to have a structure that can be rotated in place while being fixed to the .

At this time, opposite male screws 143 are formed on the upper and lower sides of the gap adjusting means 142, and when the gap adjusting means 142 is rotated forward and reversed, the upper and lower frames 140 are retracted and opened from each other. .

A plurality of electrodes 131 may be mounted on the frame 140 formed in this way.

Preferably, as shown in FIG. 5 , a socket 145 with a groove in which the electrode 131 is inserted is formed in the frame 140 , and a terminal may be formed inside the socket 145 .

And each terminal may be provided to be connected to the oscillator while being connected in parallel.

At this time, as shown in FIG. 7 , the electrode 131 has an upright plate shape and is covered with a quartz tube 132 , and a contact portion 133 inserted into the socket 145 and connected to the terminal protrudes from both ends of the electrode 131 . It may be provided to be formed.

The electrode 131 may be mounted symmetrically to face each other on the upper frame and the lower frame, and the lower end and upper end facing each other have a blade 134 shape or a round semicircle shape 135 to prevent the spread of current. ) or may be provided in a flat rectangular shape (136).

On the other hand, in order to avoid the interference between the frame 140 and the rollers 121 formed by the arrangement of the electrodes 131, the frame 140 has a through groove 146 through which the roller 121 passes as shown in FIG. 5 . formed, and the through-groove 146 may be formed in the form of a long hole elongated vertically in order to avoid interference with the roller 121 even with the vertical movement of the frame 140 .

1, the blower 150 is formed under the plasma processing unit 110, a conventional blower is installed therein, and the blower blows cold wind into the plasma processing unit 110 to the plasma processing unit ( 110) to cool the inside.

At this time, the base plate 112 provided between the blower 150 and the plasma processing unit 110 has a plurality of through holes 113 so that the wind of the blower 150 passes toward the plasma processing unit 110 . can

Here, the through hole 113 may be formed in a slit shape.

The exhaust unit 160 is formed above the cover 111 of the plasma processing unit 110 . The exhaust unit 160 is equipped with a plurality of ducts 161 from one side to the other side of the plasma processing unit 110 to exhaust the exhaust gas sucked in the duct 161 to a separate collection device.

The entry unit 170 is formed in front of the entrance of the plasma processing unit 110 , and performs a process of pre-processing the material to be entered into the plasma processing unit 110 .

That is, in order to perform an optimal plasma treatment on a material, an appropriate temperature must be adjusted, and since dust or foreign substances on the surface must be removed, it may be provided to perform such a pretreatment.

FIG. 8 shows the internal operating state of the entry unit shown in FIG. 1 .

The entry portion 170 is provided with a conventional roller 171 for pushing the material (a) into the inlet of the plasma processing unit 110 as shown in FIGS. 1 and 8 , and between the rollers 171 . An inlet injection nozzle 172 for blowing wind toward the material is provided.

The entry part injection nozzle 172 is a plurality of continuously formed on the upper and lower sides of the material, and is connected to the entry part air supply pipe 175 connected from the blower 150, and each entry part injection nozzle 172 has A narrow injection passage 173 is formed to blow high-pressure air to the material side.

In addition, the entry part 170 is provided with a temperature sensor for checking the indoor temperature of the entry part 170, and the temperature of the entry part 170 is checked by the temperature sensor, and air of an appropriate temperature is sprayed to the material side.

Such automatic temperature control is provided with a separate controller and can be preheated and sprayed by the blower 150 .

In addition, the air injected from the entry part injection nozzle 172 is discharged by additionally configuring the duct 161 of the exhaust part 160 .

The discharge unit 180 is formed on the exit side of the plasma processing unit 110, and serves to cool the surface temperature of the plasma-treated material.

The discharge unit 180 has a discharge unit air supply pipe 185 that is connected to a blower 150 for supplying cold air to the discharge unit injection nozzle and the discharge unit injection nozzle, which are disposed to be vertically spaced apart from each other in the same manner as the entry unit 170 . ) and the exhaust part 160 for discharging the air in the exhaust part 180 to the outside is additionally configured.

9 is a block diagram of a printing apparatus including a surface treatment function according to an embodiment of the present invention.

Referring to FIG. 9 , the printing apparatus including a surface treatment function according to an embodiment of the present invention includes a surface treatment unit 100 for directly printing the surface of a material that cannot be professionally printed, the surface treatment unit ( 100), a contact angle measuring unit 210 for measuring the contact angle of the surface of the surface-treated material, a roughness measuring unit 230 for measuring the roughness of the surface of the surface-treated material in the surface treatment unit 100, the surface A surface tension measurement unit 250 for measuring the surface tension of the surface of the material surface-treated in the processing unit 100, a preheating unit 300 for preheating the measured material, a printing unit 400 for printing on the preheated material and a drying unit 500 that dries the printed material.

As described above with reference to FIGS. 1 to 8 , the surface treatment unit 100 functions to surface-treat the surface of a material that cannot be directly printed using a plasma treatment method so that direct printing is possible.

The surface-treated material may include a contact angle measurement unit 210 , a roughness measurement unit 230 , and a surface tension measurement unit 250 for measuring the characteristics of the surface-treated material to the extent that direct printing is possible.

More specifically, the contact angle is a measure of the wettability of a solid surface and is mostly measured by fixed water droplets.

A low contact angle indicates high wettability (hydrophilic) and high surface energy, and a high contact angle indicates low wettability (hydrophobic) and low surface energy.

The contact angle of a liquid in contact with a flat solid surface is measured at the point of contact of the solid surface with the endpoint of the droplet curve at the junction of liquid, solid, and gas.

That is, since the printing apparatus of the present invention uses the main problem solving method to change the property of the surface of the material to be hydrophilic so that direct printing is possible on the material that cannot be directly printed, the contact angle of the surface of the material is an important parameter in printability. becomes

Therefore, the contact angle measurement unit 210 measures the contact angle of the surface of the material on which the surface treatment is completed, determines whether the measured contact angle is 0° to 50° or less, and if the range is satisfied, A true signal is transmitted to the control unit.

On the other hand, the surface roughness (Surface Roughness) is a representative type of surface roughness, and there are a centerline average calculation method (Ra), a maximum height calculation method (Rs), and a ten-point average calculation method (Rz). It will be explained by measuring Ra).

As a result of repeated research by the present inventors to enable direct printing on the surface of the material, it was found that the arithmetic mean roughness (Ra) of the material must be 0.3a or more and 0.9a or less to directly print on the material.

Therefore, the roughness measuring unit 230 according to an embodiment of the present invention measures the surface roughness of the material, determines whether the arithmetic mean roughness (Ra) of the measured material is 0.3a or more and 0.9a or less, and sets the range If it is satisfied, a True signal is transmitted to the control unit.

On the other hand, the surface tension is a force that acts to make the surface smaller on the free surface of the liquid.

The surface tension value of a solid can be defined as surface energy. More specifically, in a solid, the surface energy is defined as a value between a solid and a gas, and is an important indicator of adhesion.

The high surface energy of a solid means that higher energy is concentrated per unit area and stronger bonding is possible. Therefore, in order to print directly on the surface of a material, the surface energy of the solid material must be higher than a certain level.

Therefore, the surface tension measuring unit 250 according to an embodiment of the present invention can measure the surface tension of the material to determine whether the surface-treated material can be directly printed. It can be used to measure the surface tension of a material.

More specifically, the surface tension measuring unit 250 determines whether it is 42 dyne/cm, and when the range is satisfied, a True signal is transmitted to the control unit.

As described above, the measuring unit 200 of the present invention can measure the characteristics of the surface-treated material in various ways, and the user can use all three measuring units 200 to measure the surface characteristics of the material. and some of them may be selectively used, which does not limit the scope of the present invention.

Meanwhile, the preheating unit 300 performs a function of preheating the material in order to increase the temperature of the material before the material enters the printing unit 400 .

This is, when the printing ink uses water-based ink, the temperature of the material itself is increased for drying. At this time, the preheating unit 300 may be controlled so that the temperature of the surface of the material is 50 °C or less.

In addition, after the printing unit 400 completes printing on the surface of the material, the material may be transferred to the drying unit 500 , and the transferred material may be completely dried while passing through the drying unit 500 . can

10 is a diagram illustrating a process of printing on a material that cannot be directly printed by using a printing apparatus including a surface treatment function according to an embodiment of the present invention.

Referring to FIG. 10 , using the printing apparatus including a surface treatment function according to an embodiment of the present invention, in order to print on a material that cannot be directly printed, a surface treatment step of treating the surface of the material (S100), After the surface treatment step (S100), the measuring step (S200) of measuring whether the surface treatment in the surface treatment step (S100) is suitable, after the measuring step (S200), the temperature of the material surface before the material is printed Preheating step (S300) of preheating to be below 50 °C, printing step (S400) of printing directly on the material preheated in the preheating step (S300), and drying the material that has been printed in the printing step (S400) It may include a drying step (S500).

Meanwhile, the measuring step (S200) includes a contact angle measuring step (S211) of measuring a contact angle of the material, a roughness measuring step (S213) of measuring the roughness of the material, and a surface tension measuring step of measuring the surface tension of the material (S215) may be provided to include.

Although preferred embodiments of the present invention have been described above, the scope of the present invention is not limited thereto, and the scope of the present invention extends to those substantially equivalent to the embodiments of the present invention. Various modifications are possible by those of ordinary skill in the art to which the invention pertains without departing from the scope of the invention.

100: surface treatment unit
200: measurement unit
210: contact angle measurement unit
230: illuminance measuring unit
250: surface tension measurement unit

Claims (1)

A graphic insert privacy film comprising the features described in the Detailed Description of the Invention.

Images