KR20160007025A - Ink composition for reverse offset printing and reverse offset printing method using the same - Google Patents
Ink composition for reverse offset printing and reverse offset printing method using the same Download PDFInfo
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- KR20160007025A KR20160007025A KR1020140086915A KR20140086915A KR20160007025A KR 20160007025 A KR20160007025 A KR 20160007025A KR 1020140086915 A KR1020140086915 A KR 1020140086915A KR 20140086915 A KR20140086915 A KR 20140086915A KR 20160007025 A KR20160007025 A KR 20160007025A
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- ink composition
- offset printing
- reverse offset
- blanket
- pdms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/52—Electrically conductive inks
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
Description
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reverse offset printing ink composition and a reverse offset printing method using the same, and more particularly, to a reverse offset printing ink composition having improved coating properties for a blanket of a reverse offset printing apparatus and a reverse offset printing method using the same. .
Recently, the development of physical properties of ink in the production of electronic devices using printing technology has been intensively studied as a core technology. The requirements of electrical, optical and mechanical properties are divided according to the types of printed electronic devices. Various types of inks are developed with colloidal inks and conductive or semi-conductor polymer inks using metal, non-conductive or semiconductor nanoparticles. . However, the primary requirement for all these inks is that they must be printable.
Recently, as the printing line width of roll-to-roll large-area printing becomes finer, offset type contact printing using blanket including polydimethyl siloxane (PDMS) is attracting attention. In particular, in the case of a reverse offset, the ink is coated on the PDMS blanket over the entire surface, and then a pattern is formed using a plate.
The PDMS blanket is a very stable material, and in the case of water, the contact angle is so large as 90 ° or more that the coating is impossible. A surfactant or the like is added to adjust the surface tension of the ink to adjust the contact angle of the ink on the surface of the stable PDMS blanket.
However, the problem is that inks having a lower contact angle due to the addition of a surfactant cause poor coating in the PDMS blanket coating. In addition, such coating defects do not improve even if the process parameters such as the printing speed are increased or decreased. Currently, this problem has not been solved by many ink developers.
SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a reverse offset printing ink composition having improved coating properties and a reverse offset printing method using the same.
The ink composition for reverse offset printing coated on a blanket containing PDMS (polydimethyl siloxane) according to one embodiment for realizing the object of the present invention comprises 20 to 60% by weight of metal particles, 0.1 to 3.0% by weight of polyether siloxane copolymer % And an excess of solvent.
In one embodiment, the metal particles may be copper (Cu), silver (Ag), gold (Au), aluminum (Al), nickel (Ni), titanium (Ti), iron (Fe) have.
In one embodiment, the weight average molecular weight of the polyether siloxane copolymer may range from 5,000 to 200,000.
In one embodiment, the polyether siloxane copolymer is selected from the group consisting of TEGO
In one embodiment, the inorganic nanoparticles may include at least one of copper oxide (CuO, Cu 2 O), zinc oxide (ZnO), tin oxide (SnO 2 ), indium oxide (In 2 O 3 ), gallium oxide (Ga 2 O 3 ) (Li 2 O 3 ), barium oxide (V 2 O 3 ), silicon (Si), silicon oxide (SiO 2 , SiO 2 ), silicon nitride (Si 3 N 4 ) titanium oxide TiO or TiO 2), or it may be a mixture of these particles.
In one embodiment, the ink composition may further comprise a viscosity modifier comprising an aqueous dispersion polyurethane.
In one embodiment, the ink composition may further comprise a surfactant comprising a fluorine-based polymer.
According to the reverse offset printing method of the present invention for realizing the object of the present invention, 20 to 60% by weight of metal particles and 0.1 to 3.0% by weight of polyether siloxane copolymer are added to a blanket containing PDMS (polydimethyl siloxane) And an excess solvent. A portion of the ink composition coating on the blanket is removed using a cleanser roll having reversed-phase patterns of the desired pattern formed. The ink composition coating of the desired pattern remaining on the blanket is transferred to the substrate.
According to embodiments of the present invention, the reverse offset printing ink composition can include a polyether siloxane copolymer to increase the coating properties of the ink composition for a blanket containing PDMS.
1 is a result of observing the result of coating an ink composition containing a polyether siloxane copolymer, water-dispersed polyurethane, and Pluronic F127 on a PDMS blanket according to an embodiment of the present invention and transferring it onto a glass substrate .
Fig. 2 is a result of observing the result of coating an ink composition containing no polyether siloxane copolymer on a PDMS blanket and then transferring it onto a glass substrate.
FIG. 3 shows the result of coating the PDMS blanket with an ink composition containing a water-dispersed polyurethane and a fluorine-based polymer, which is not contained in the polyether siloxane copolymer, and then transferred onto a glass substrate.
While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing. The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms.
The terms are used only for the purpose of distinguishing one component from another. The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise.
In the present application, the term "comprises" or "comprising ", etc. is intended to specify that there is a stated feature, figure, step, operation, component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, 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 are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Reverse offset printing ink composition
The ink composition for reverse offset printing coated on a blanket containing PDMS (polydimethyl siloxane) according to an embodiment of the present invention includes metal particles or inorganic nanoparticles, a polyether siloxane copolymer, and an excess solvent.
For example, the ink composition comprises 20 to 60 wt% metal particles, 0.1 to 3.0 wt% polyether siloxane copolymer, and an excess of solvent.
The ink composition for reverse offset printing includes metal particles or inorganic material particles. The metal particles are for imparting conductivity to the ink composition.
The metal particles for the ink may be copper (Cu), silver (Ag), gold (Au), aluminum (Al), nickel (Ni), titanium (Ti) and iron (Fe) The fast particles may have an average particle size in the range of 5 nm to 100 nm.
In the ink composition according to an embodiment of the present invention, the metal particles may be included in an amount of 20 to 60% by weight based on the total weight of the ink composition. By including the metal particles in an amount of 20 to 60% by weight, the thickness of the coated and transferred film is formed to be 100 nm or more so that excellent electrical conductivity can be obtained after firing, and the thickness of the film can be maintained at 1.5 탆 or less, Can be prepared.
The ink composition for reverse offset printing comprises a polyether siloxane copolymer. The polyether siloxane copolymer is intended so that the ink composition has a very good coating property with respect to the blanket of the PDMS material.
By including the polyether siloxane copolymer, the affinity of the PDMS blanket with the material can be increased. Accordingly, the contact angle of the ink coated on the PDMS blanket can be lowered. In addition, it is possible to prevent problems such as cracking of the coating that may occur when an additive such as a surfactant is added to reduce the contact angle on the PDMS blanket of the ink.
The weight average molecular weight of the polyether siloxane copolymer may range from 5,000 to 200,000.
For example, the polyether siloxane copolymer may be a TEGO
In the ink composition according to one embodiment of the present invention, the polyether siloxane copolymer may be contained in an amount of 0.1 to 3.0% by weight based on the total weight of the ink composition. When the ink composition contains less than 0.1% by weight of the polyether siloxane copolymer, it is difficult to improve affinity with the PDMS blanket. Further, when the ink composition contains more than 3.0% by weight of the polyether siloxane copolymer, the viscosity of the ink composition may be increased to lower the coating property, and the electric conductivity may be impaired during the heat treatment.
The ink composition for reverse offset printing comprises an excess of solvent. For example, the solvent may be selected from the group consisting of methanol, ethanol, n-propanol, i-propanol, n-butanol, i-butanol, t-butanol, propylene glycol, propylene glycol methyl ether, ethylene glycol, ethylene glycol phenyl ether, Ether, methyl chloride, n-methyl pyrrolidone, or mixtures thereof.
The ink composition for reverse offset printing may further include a binder. The binder improves the bonding force between the sintered ink pattern and the substrate on which the ink pattern is located. The binder may be a binder resin that is commonly used in the ink composition field, which is easily dissolved in a solvent. For example, the binder may be one or more selected from the group consisting of a phenolic resin and an acrylic resin. The acrylic resin may include a polyacrylic acid resin or a polyacrylic ester resin, and the phenolic resin may include an alkyl phenolic resin, and the alkyl phenolic resin may include an alkyl phenol-formaldehyde resin .
In the ink composition according to an embodiment of the present invention, the binder may be contained in an amount of 0.5 to 3% by weight based on the total weight of the ink composition, in order to obtain sufficient adhesion and not to reduce the densification among the nanoparticles during sintering.
The ink composition for reverse offset printing may further include a dispersing agent. The dispersant is intended to improve the dispersion stability of the ink composition. The dispersant may be a copolymer having an acid value of 50 mg KOH / g or more and an amine value of 100 mg KOH / g or less. For example, the dispersant may be a copolymer having an acid value of 50 mg KOH / g to 200 mg KOH / g and an amine value of 0 mg KOH / g to 100 mg KOH / g. Specifically, BYK 102 (acid value: 101 mg KOH / g, amine value: 0 mg KOH / g), BYK 110 (acid value: 53 mg KOH / g, amine value: 0 mg KOH / g), BYK142 BYK995 (acid value: 53 mg KOH / g, amine value: 0 mg KOH / g), BYK180 (acid value: 94 mg KOH / g, BYK 996 (acid value: 71 mg KOH / g, amine value: 0 mg KOH / g) can be used as a dispersant.
The ink composition according to an embodiment of the present invention may contain the dispersant in an amount of 1 to 3% by weight based on the total weight of the ink composition.
The ink composition for reverse offset printing may further include a viscosity adjusting agent. For example, the viscosity modifier may comprise an aqueous dispersion polyurethane.
The ink composition for reverse offset printing may further comprise a surfactant. For example, the surfactant may comprise Pluronic F127.
Example One
0.4 g of PUD as a viscosity modifier, 0.1 g of a surfactant Pluronic F127 and 0.1 g of a polyether siloxane copolymer TEGO Glide 410 were mixed with 2 g of ethanol, 4.4 g of ethylene glycol phenyl ether, 0.8 g of methyl chloride, -Methylpyrrolidone (0.2 g) to prepare an ink composition and measure its viscosity. The ink composition thus prepared was measured on the contact angle of the ink composition applied on the PDMS blanket. The ink composition thus prepared was reverse-offset printed on a glass substrate using a PDMS blanket, and then the glass substrate was baked at 300 ° C for 5 minutes in an atmospheric environment, and then the uniformity of the coated surface was observed.
Comparative Example 1
The ink composition was identical to that of Example 1 except that no additives were added in Example 1, and thus an ink composition was prepared and the viscosity was measured. The ink composition thus prepared was measured on the contact angle of the ink composition applied on the PDMS blanket. The ink composition thus prepared was reverse-offset printed on a glass substrate using a PDMS blanket, and then the glass substrate was baked at 300 ° C for 5 minutes in an atmospheric environment, and then the uniformity of the coated surface was observed.
Comparative Example 2
In Comparative Example 1, 0.4 g of a viscosity modifier PUD and 0.1 g of a surfactant Pluronic F127 were added as an additive, which was the same as in Comparative Example 1, and the viscosity of the ink composition was measured. The ink composition thus prepared was measured on the contact angle of the ink composition applied on the PDMS blanket. The ink composition thus prepared was reverse-offset printed on a glass substrate using a PDMS blanket, and then the glass substrate was baked at 300 ° C for 5 minutes in an atmospheric environment, and then the uniformity of the coated surface was observed.
Table 1 below shows the measurement results according to Example 1, Comparative Example 1 and Comparative Example 2. Referring to the following Table 1, the viscosity, the change in the contact angle and the uniformity of the coated surface of the ink composition can be known.
[Table 1]
When the coating film after the ink composition was coated on the glass substrate was observed, the coating film was uniformly coated over the entire surface, and the result was indicated by o. When the coating film was not uniform, or when the coating film was broken,
When the ink composition according to Example 1 was coated on a glass substrate, it was found that the contact angle was relatively low as 36.2 °, which is a relatively low value as compared with Comparative Example 1. In comparison with Comparative Example 2 in which other additives were added to improve the coating property by reducing the contact angle of the ink composition on the PDMS blanket, when the uniformity or area of the coated surface was observed after coating on the glass substrate , It can be seen that the ink composition of Example 1 can form a more uniform coating film.
1 is a result of observing the result of coating an ink composition containing a polyether siloxane copolymer, water-dispersed polyurethane, and Pluronic F127 on a PDMS blanket according to an embodiment of the present invention and transferring it onto a glass substrate . Fig. 2 is a result of observing the result of coating an ink composition containing no polyether siloxane copolymer on a PDMS blanket and then transferring it onto a glass substrate. FIG. 3 shows the results of coating the PDMS blanket with an ink composition containing a water-dispersed polyurethane and a fluorine-based polymer, which is not contained in the polyether siloxane copolymer, and then transferred onto a glass substrate.
1 to 3, the result of observing the coating film formed on the glass substrate according to Example 1 corresponds to FIG. 1, and the result of observing the coating film formed on the glass substrate according to Comparative Example 1 is shown in FIG. 2 And the result of observing the coating film formed on the glass substrate according to Comparative Example 2 corresponds to FIG.
When the ink composition according to an embodiment of the present invention is coated on a blanket containing PDMS (polydimethyl siloxane), the ink composition on the blanket can be coated. Wherein the droplets of the ink composition on the blanket can have a contact angle of 10 [deg.] To 40 [deg.].
In general, when the viscosity of the ink composition is very low, the contact angle may be lowered to some extent even if the blanket contains PDMS. However, if the viscosity is above a certain value, the surface of the blanket is very stable, . However, when the ink composition contains the polyether siloxane copolymer, a desired contact angle can be sufficiently secured even if the viscosity is relatively high, and the coating property to the blanket can be improved.
According to the reverse offset printing method according to an embodiment of the present invention, a reverse offset printing ink composition comprising metal particles, polyether siloxane copolymer, inorganic nanoparticles, and an extra solvent in a blanket containing PDMS (polydimethyl siloxane) Coating. A portion of the ink composition coating on the blanket is removed using a cleanser roll having reversed-phase patterns of the desired pattern formed. The ink composition coating of the desired pattern remaining on the blanket is transferred to the substrate. For example, the substrate may be a glass substrate.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention as defined by the following claims. It can be understood that it is possible.
The ink composition according to the present invention has industrial applicability that can be used for reverse offset printing including PDMS blanket.
Claims (7)
20 to 60% by weight of metal particles;
0.1 to 3.0% by weight of a polyether siloxane copolymer; And
And wherein the droplet has a contact angle of 10 to 40 when coated on the blanket.
Removing a portion of the ink composition coating on the blanket using a cleanser roll having a reversed-phase pattern of a desired pattern formed thereon; And
Transferring the ink composition coating of the desired pattern remaining on the blanket to the substrate,
Wherein the ink composition has a contact angle of 10 [deg.] To 40 [deg.] When the ink composition is coated on the blanket comprising the PDMS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020140086915A KR20160007025A (en) | 2014-07-10 | 2014-07-10 | Ink composition for reverse offset printing and reverse offset printing method using the same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020140086915A KR20160007025A (en) | 2014-07-10 | 2014-07-10 | Ink composition for reverse offset printing and reverse offset printing method using the same |
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| Publication Number | Publication Date |
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| KR20160007025A true KR20160007025A (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| KR1020140086915A KR20160007025A (en) | 2014-07-10 | 2014-07-10 | Ink composition for reverse offset printing and reverse offset printing method using the same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20230019652A (en) | 2021-08-02 | 2023-02-09 | 재단법인대구경북과학기술원 | Reverse offset printing ink composition and reverse offset printing method using the same |
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- 2014-07-10 KR KR1020140086915A patent/KR20160007025A/en not_active Application Discontinuation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20230019652A (en) | 2021-08-02 | 2023-02-09 | 재단법인대구경북과학기술원 | Reverse offset printing ink composition and reverse offset printing method using the same |
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