KR102417069B1 - Method for manufactuting silicone ink using rotary agitator - Google Patents

Abstract

The present invention relates to a silicone ink producing method using a rotary stirrer. According to an embodiment of the present invention, the silicone ink producing method comprises the following steps of: producing a compounding agent by adding a pigment to a silicone raw material; mixing the compounding material a plurality of times using a mixer to prepare a mixture; stirring the mixture in a vacuum mixer; adjusting a viscosity of the stirred mixture; producing silicone ink by using the mixture with the adjusted viscosity using the mixer; and packaging the produced silicone ink. The vacuum mixer comprises: a pressure gauge checking pressure inside the vacuum mixer; a window device checking a state of the mixture being stirred; and a vacuum pump controlling an inside of the vacuum mixer to a vacuum state.

Description

Silicone ink manufacturing method using a rotary stirrer

The present invention relates to a method for manufacturing silicone ink using a rotary stirrer.

In general, elastic materials such as swimming caps use silicone ink or rubber ink to have the same performance as the material when printing an image on the surface.

Since silicone ink or rubber ink has high viscosity, an image is formed on the object to be printed using the silkscreen technique. However, when an image is formed using the silkscreen technique, it is inconvenient to perform silkscreen printing a number of times corresponding to the number of colors in order to form images of various colors.

In addition, the silicone ink has disadvantages in that it is less uniform than the conventional inkjet ink and it is difficult to manufacture in a plurality of colors.

Therefore, there is a need for a silicone ink manufacturing method using a rotary stirrer to solve these shortcomings, increase uniformity, and produce a plurality of colors.

The technology that is the background of the present invention is disclosed in Korean Patent Registration No. 10-2155179 (notice on September 11, 2020).

The present invention was derived to solve the above problems, to prepare a compounding agent by adding a dye to a silicone raw material, mixing the compounding material a plurality of times using a mixer to prepare a mixture, and putting the mixture into a rotary stirrer and stirring And, it aims to provide a silicone ink manufacturing method using a rotary stirrer for preparing silicone ink using the mixer with the viscosity adjusted mixture by adjusting the viscosity of the stirred mixture.

According to an embodiment of the present invention, adding a pigment to a silicone raw material to prepare a compounding agent, mixing the compounding material a plurality of times using a mixer to prepare a mixture, putting the mixture into a rotary stirrer and stirring step, adjusting the viscosity of the stirred mixture, preparing a silicone ink using the mixer with the viscosity-adjusted mixture, and packaging the prepared silicone ink, wherein the rotary stirrer is A plurality of rotating blades and a head for fixing the rotating blades.

The mixer may include a draw roller, a middle roller and a scraper roller, the draw roller and the scraper roller may rotate in the same direction, and the middle roller may rotate in a direction opposite to the draw roller.

The rotary blade may include a coupling part attached to the head, one or more vertical wing parts formed to include bending on both sides of the coupling part, and a horizontal wing part connecting each other side of the wing part.

An encapsulation layer is applied to the surface of the mixer, the encapsulation layer is formed to have a diameter of 1 to 3 nm and a height of 5 nm, compared to 100 parts by weight of Vinyl-terminated Silicone Oil, 50 parts by weight of Fumed Silica part, 40 parts by weight of the platinum catalyst, and 15 parts by weight of the additive, and the additive may include 10 parts by weight of a heat-sensitive color-change ink, 10 parts by weight of a photosensitive color-change ink, 0.3 parts by weight of an anti-settling agent, and 0.2 parts by weight of an antifoaming agent relative to 10 parts by weight of a hiding pigment have.

According to the present invention having the above method and characteristics, by using a rotary stirrer, the uniformity of the silicone ink can be ensured, and a plurality of colors can be produced according to the pigment to be blended.

In addition, by sealing using a packaging machine, it is possible to prevent other foreign substances from being included in the silicone ink that has been manufactured.

1 is a flowchart for explaining a method of manufacturing a silicon ink according to an embodiment of the present invention.
2 is a view showing a silicone resin according to an embodiment of the present invention.
3 is a view showing a mixer according to an embodiment of the present invention.
Figure 4a is a view for explaining a rotary stirrer according to an embodiment of the present invention.
Figure 4b is a view for explaining the rotary blade of the rotary stirrer according to the embodiment of the present invention.
5 is a view showing a silicone ink manufactured according to an embodiment of the present invention.
6 is a view for explaining a packaging machine according to an embodiment of the present invention.
7 is a view showing a result printed using the silicone ink produced according to an embodiment of the present invention.

Since the present invention can have various changes and can have various forms, implementation examples (態樣, aspects) (or embodiments) will be described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

The terminology used herein is only used to describe a specific embodiment (aspect, aspect, aspect) (or embodiment), and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as comprises or consists of are intended to designate that the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification exist, but one or more other features It is to be understood that it does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

~1~, ~2~, etc. described in the present specification are only to be referred to to distinguish that they are different components, and are not limited to the order of manufacture, and their names in the detailed description and claims of the invention are may not match.

1 is a flowchart illustrating a method of manufacturing silicon ink using a vacuum mixer according to an embodiment of the present invention.

As shown in Figure 1, the silicone ink manufacturing method using a vacuum mixer is a compounding agent preparation step (S110), a mixture preparation step (S120), agitation step (S130), a viscosity adjustment step (S140), a silicone ink manufacturing step (S150) and a packaging step (S160).

First, in the compounding agent manufacturing step (S110), a pigment is added to the silicone raw material to prepare a compounding agent.

In this case, the silicon raw material includes a silicone resin or a catalyst.

Here, the silicone resin is a reactive/functional material and may be prepared as a solvent, a solvent-free liquid, or a solid flake.

In addition, inorganic pigments and organic pigments are used together for the pigment.

First, inorganic pigments have excellent physical properties, such as chemical resistance, light resistance, corrosion resistance, chemical resistance, solvent resistance, etc., because the color component is inorganic, but the clarity and coloring power may be lower than those of the organic pigments described above.

In addition, organic pigments have a clearer color than inorganic pigments, have greater coloring power, and can obtain arbitrary color tones, but have poor light resistance and heat resistance, and may dissolve in organic paper and spread color.

Therefore, in the embodiment of the present invention, the physical properties and color clarity can be improved by including the inorganic pigment and the organic pigment together.

In addition, the pigment may further include a lake pigment.

And the compounding agent may further include a glass frit to increase conductivity.

At this time, the glass frit is bismuth (Bi), zinc (Zn), aluminum (Al), lithium (Li), potassium (K), sodium (Na), titanium (Ti), manganese (Mn), cobalt (Co), and at least one oxide selected from the group consisting of nickel (Ni), copper (Cu), zirconium (Zr), and silicon (Si). That is, by including such a mixture, the compounding material can be used in the case of producing a semiconductor or OLED panel including conductivity.

In addition, the catalyst is for quickly providing a mixing reaction rate between the silicone resin and the dye, and a platinum compound may be used.

2 is a view showing a silicone resin according to an embodiment of the present invention.

That is, a compounding agent is prepared by adding a dye and a catalyst to the silicone resin as shown in FIG. 2 .

Next, in the mixture preparation step (S120), the mixing agent is put in a mixer and mixed a plurality of times.

3 is a view showing a mixer according to an embodiment of the present invention.

As shown in FIG. 3 , the mixer 10 includes a draw roller 11 , a middle roller 12 , a scraper roller 13 and a scraper 14 .

First, the mixer 10 homogenizes the compounding agent by passing the compounding agent through a fine gap between horizontally placed rollers, and the adjacent draw roller 11, middle roller 12 and scraper roller 13 rotate by , pressure and shear force are applied to the compounding agent to produce a homogeneous mixture through mixing, pulverizing and dispersing.

The mixer 10 rotates the draw roller 11 and the scraper roller 13 in the same direction, and rotates the middle roller 12 in the opposite direction to the draw roller 11 and the scraper roller 13 . At this time, the compound is put between the draw roller 11 and the middle roller 12, passes between the draw roller 11 and the middle roller 12, and the sample that adheres to the surface of the middle roller 12 is a scraper roller ( 13), at this time, the draw roller 11 and the middle roller 12 rotate in different directions and at different speeds due to shear forces in the space between the draw roller 11 and the middle roller 12 Mixing, grinding and dispersing come into play. At this time, the narrower the gap between the draw roller 11 and the middle roller 12, the higher the shear force is generated.

Then, the dispersed sample adheres to the scraper roller 14 and is discharged by the scraper 14 .

In addition, it operates so that the rotation speed of the middle roller 13 is faster than the rotation speed of the draw roller 11 and the rotation speed of the scraper roller 13 is faster than the rotation speed of the middle roller 12 . At this time, the rotation speed ratio of the draw roller 11 , the middle roller 12 and the scraper roller 13 is preferably 1:3:9.

That is, when the rotation speed ratio is 1:3:9, the shear force and pressure of the mixer can be exerted to the maximum. For example, when the rotation speed of the draw roller 11 is 67 rpm, the rotation speed of the middle roller 12 is about 200 rpm, and the rotation speed of the scraper roller 13 is about 600 rpm.

By performing the operation of the mixer 10 a plurality of times, the mixing, pulverizing, and dispersing effects of the compounding agent are increased, and a homogenized, high-quality mixture can be produced.

Next, in the stirring step (S130), the mixture is put into the rotary stirrer 20 and stirred.

Figure 4a is a view for explaining a rotary stirrer according to an embodiment of the present invention, Figure 4b is a view for explaining a rotary blade of the rotary stirrer according to an embodiment of the present invention.

4A and 4B , the rotary stirrer 20 includes a pressure gauge 21 , a window device 22 , a vacuum pump 23 , a rotary blade 24 and a head 25 .

First, the pressure gauge 21 provides the pressure inside the current rotary stirrer 20, the window device 22 checks the state of the currently stirring mixture, and the vacuum pump 23 is the rotary stirrer 20 The inside is controlled by vacuum.

And, as shown in Fig. 4b, the rotary blade 24 coupled to the head 25 was shown to be installed in two, but a plurality of more are installed depending on the size of the rotary agitator 20 and the size of the rotary blade 24 can be In addition, the two rotating blades 24 may each rotate in opposite directions, for example, when the rotating blade 24 on the right rotates clockwise, the rotating blade 24 on the left rotates counterclockwise. rotate

And as shown in Figure 4b, the rotary blade 24 according to the embodiment of the present invention is a coupling portion 241 attached to the head, one or more vertical wing portions formed perpendicular to the bottom surface on both sides of the coupling portion 241 242 and a horizontal wing portion 243 connecting the other side of each of the vertical wing portions 242. At this time, the vertical wing portion 242 increases in thickness as it progresses from the coupling portion 241 to the bottom surface, and decreases in thickness as it proceeds toward the horizontal wing portion 243 from the midpoint of the vertical wing portion 242. do. In addition, a cross-section when the vertical wing portion 242 and the horizontal wing portion 243 are horizontally and vertically cut may be formed in a triangular shape. By using the rotary blade 24 formed in this way, it is possible to provide a stronger bond between the silicone resin and the dye.

Next, the viscosity adjustment step (S140) adjusts the viscosity of the stirred mixture.

At this time, the adjusted viscosity is the viscosity of the produced silicone ink and is polished to a required viscosity for printing. In other words. If the viscosity is formed to be smaller than the reference viscosity, there is a disadvantage that it flows down during printing.

Next, in the silicone ink manufacturing step ( S150 ), the mixture having the adjusted viscosity is prepared as silicone ink by using the mixer 10 .

5 is a view showing a silicone ink manufactured according to an embodiment of the present invention.

That is, as shown in FIG. 5 , the mixture whose viscosity is adjusted using the mixer 10 described above is mixed, pulverized, and dispersed to prepare a silicone ink.

Next, in the packaging step ( S160 ), the manufactured silicone ink is packaged using a packaging machine.

6 is a view for explaining a packaging machine according to an embodiment of the present invention.

At this time, as shown in FIG. 6 , the packaging machine 30 includes a press 31 , a plurality of support members 32 supporting the press 31 , and a cover 33 installed at the lower end of the press 31 .

That is, a drum filled with silicone ink is placed on the lower surface of the cover 33 shown in FIG. 6 , the drum lid is coupled to the upper surface of the drum, and the lid and the drum are compressed using a press 31 .

At this time, the drum and the lid are brought into close contact using the packaging machine 30 to prevent other foreign substances from being contained in the silicone ink that has been manufactured.

7 is a view showing a result printed using the silicone ink produced according to an embodiment of the present invention.

That is, as shown in FIG. 7 , it is possible to print using silicone ink on the upper surface of the fabric.

In addition, each of the draw roller 11, the middle roller 12 and the scraper roller 13 of the mixer 10 further includes a capsule layer capable of discoloration according to the temperature of the silicone ink. By including such an encapsulation layer, the operator directly checks the temperature of the silicone ink being mixed in the mixer 10, thereby making it possible to manufacture high quality silicone ink. The encapsulation layer is formed in the form of a plurality of water droplets, and the encapsulation layer may have a diameter of 1 to 3 nm and a height of 5 nm. This, the capsule layer contains 100 parts by weight of vinyl-terminated silicone oil, 50 parts by weight of fumed silica, 40 parts by weight of a platinum catalyst, and 15 parts by weight of additives, and the additive is 10 parts by weight of a hiding pigment Incidentally, 5 parts by weight of the thermal color-change ink, 5 parts by weight of the photosensitive color-change ink, 0.3 parts by weight of an anti-settling agent, and 0.2 parts by weight of an antifoaming agent are included.

First, vinyl-terminated silicone oil is used to form a capsule form, and it is preferable to use it in an amount of 100 parts by weight. At this time, when used in less than 100 parts by weight, the capsule shape cannot be maintained, and when used in more than 100 parts by weight, economical efficiency is deteriorated.

Next, fumed silica is required for the creation of the capsule layer 12 because it is easy to control mechanical strength and viscosity when applying a high-elongation elastic paint having a temperature-sensitive color changeability, and when used in less than 50 parts by weight, mechanical strength and viscosity is decreased, and when used in an amount greater than 50 parts by weight, the viscosity increases, thereby reducing the elasticity of the high elongation elastic paint. Therefore, it is preferable that 50 parts by weight of the fumed silica is used relative to 100 parts by weight of the vinyl-terminated silicone oil.

Next, the platinum catalyst is used to control the reaction of the thermal discoloration ink when the temperature is changed, and it is preferable to use 40 parts by weight based on 100 parts by weight of the vinyl-terminated silicone oil. The reaction of the ink may be slow or rapid.

Next, since the color of the thermal discoloration ink is not clear when the color of the silicone product is colored, the concealing pigment uses titanium oxide, zinc oxide, lithopone, light white, etc. to hide the background color. , can be shielded and the color can be sharpened by mixing thermal color-change ink here. In this case, 10 parts by weight of the hiding pigment is preferably used. When less than 10 parts by weight is used, the color of the thermochromic ink does not become clear, and when used in more than 10 parts by weight, it is not economical.

Next, the thermochromic ink is an ink that changes color when the temperature is changed, and may be composed of Zion ink or C21H16N2, and has a discoloration temperature of -15°C to 200°C, more preferably 0 to 50°C depending on temperature conditions. Select pigments that change color. It is preferable to use 5 parts by weight based on 10 parts by weight of the hiding pigment, and when using less than or more than 5 parts by weight of the heat-sensitive color-changing ink, the temperature condition is changed and thus it cannot respond to human body temperature.

Next, photosensitive color-changing ink is an ink that is discolored by light, such as organic compounds such as silver halide, spiropyran, spirooxazine, azo compound, diarylethene, or tungsten compound. Inorganic compounds can be used. It is preferable to use 5 parts by weight based on 10 parts by weight of the hiding pigment, and when using less than or more than 5 parts by weight, the time for discoloration by light is lengthened or shortened, so that the use time of 15 to 20 minutes is adjusted. difficult.

Next, the anti-settling agent is used to inhibit the sedimentation of particles constituting the discoloration ink composition, silica (Silica), alumina, kaolinite, bentonite, dolomite, bayerite (BaSO4), calcium carbonate (CaCO3), talc , titania, and inorganic substances such as diatomaceous earth can be used. In particular, since the photosensitive color-change ink requires reactivity to light, it is preferable to use a transparent silicone-based anti-settling agent such as silica. It is preferable that 0.3 parts by weight of the anti-settling agent be used relative to 10 parts by weight of the hiding pigment, and when used less than 0.3 parts by weight, the sedimentation phenomenon is not suppressed, and when used in greater than 0.3 parts by weight, economical efficiency is lowered.

Next, an antifoaming agent such as polysiloxane may be used to suppress the occurrence of air bubbles inside the capsule layer when the encapsulation layer is created or to suppress the pinhole generation during transfer due to air bubbles. At this time, it is preferable that 0.2 parts by weight of the antifoaming agent is used based on 10 parts by weight of the hiding pigment, and when less than 0.2 parts by weight is used, bubbles may be formed inside the capsule layer. .

The present invention described above with reference to the accompanying drawings is capable of various modifications and changes by those skilled in the art, and such modifications and changes not limited through the claims should be construed as being included in the scope of the present invention.

10: mixer 11: draw roller
12: middle roller 13: scraper roller
14: scraper 20: vacuum mixer
21: pressure gauge 22: window device
23: vacuum pump 24: rotating blade
25: head 30: packing machine
31: press 32: support member
33: cover

Claims (4)

preparing a compounding agent by adding a pigment to the silicone raw material;
preparing a mixture by mixing the compounding material a plurality of times using a mixer;
Putting the mixture into a rotary stirrer and stirring;
adjusting the viscosity of the stirred mixture;
preparing a silicone ink using the mixer with the viscosity-adjusted mixture; and
Comprising the step of packaging the prepared silicone ink,
The rotary stirrer includes a plurality of rotary blades and a head for fixing the rotary blades,
A capsule layer is applied to the surface of the mixer,
The capsule layer is
It is formed with a diameter of 1 to 3 nm and a height of 5 nm, and contains 50 parts by weight of fumed silica, 40 parts by weight of a platinum catalyst, and 15 parts by weight of additives, relative to 100 parts by weight of vinyl-terminated silicone oil,
The additive is
A silicone ink manufacturing method using a rotary stirrer comprising 10 parts by weight of a heat-sensitive color-changing ink, 10 parts by weight of a photosensitive color-changing ink, 0.3 parts by weight of an anti-settling agent, and 0.2 parts by weight of an antifoaming agent based on 10 parts by weight of a hiding pigment.
The method according to claim 1,
The mixer includes a draw roller, a middle roller and a scraper roller,
The draw roller and the scraper roller rotate in the same direction, and the middle roller rotates in the opposite direction to the draw roller.
The method according to claim 1,
The rotating blade is
a coupling part attached to the head;
At least one vertical wing portion formed to include a curve on both sides of the coupling portion; and
A silicon ink manufacturing method using a rotary stirrer comprising a; horizontal wing portion connecting each other side of the wing portion.
delete

Images