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WO2015064950A1 - Composition d'encre pour tampographie - Google Patents

Composition d'encre pour tampographie Download PDF

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Publication number
WO2015064950A1
WO2015064950A1 PCT/KR2014/009942 KR2014009942W WO2015064950A1 WO 2015064950 A1 WO2015064950 A1 WO 2015064950A1 KR 2014009942 W KR2014009942 W KR 2014009942W WO 2015064950 A1 WO2015064950 A1 WO 2015064950A1
Authority
WO
WIPO (PCT)
Prior art keywords
ink composition
acrylate
meth
printing
ink
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2014/009942
Other languages
English (en)
Korean (ko)
Inventor
최봉진
성준희
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongwoo Fine Chem Co Ltd
Original Assignee
Dongwoo Fine Chem Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dongwoo Fine Chem Co Ltd filed Critical Dongwoo Fine Chem Co Ltd
Publication of WO2015064950A1 publication Critical patent/WO2015064950A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • 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
    • C09D11/10—Printing inks based on artificial resins
    • 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
    • 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
    • C09D11/10—Printing inks based on artificial resins
    • C09D11/101—Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing

Definitions

  • the present invention relates to an ink composition for pad printing, and more particularly, to an ink composition for pad printing with remarkably improved printability.
  • an image display device including a touch screen panel
  • a display portion refers to a portion where an image is displayed
  • a non-display portion refers to an edge portion where an image is not displayed.
  • the non-display unit is a top layer shown to the consumer, and a light blocking layer is formed so that the lower wiring is not visible to the user, and various patterns such as a company logo, an icon, and an IR pattern may be formed on the light blocking layer. Such a pattern may be formed in the recessed groove portion formed in the light blocking layer.
  • Pad printing is one of printing techniques for transferring a 2-D image to a 3-D object.
  • the printing process is simple and the image can be easily printed on the curved 3-D surface. .
  • ink having excellent transfer power and printability is required because there may be a problem such as light leakage or a lower pattern being recognized when there is an unfilled portion in the printed portion. .
  • Korean Patent Publication No. 2012-0080878 discloses a conductive ink composition and a method of manufacturing the same.
  • An object of the present invention is to provide an ink composition for pad printing with remarkably improved printability.
  • phase angle represented by the following formula 1 is 45 ° or more and less than 90 °:
  • the ink composition wherein the phase angle is measured by performing a frequency sweep from angular frequency of 0.1rad / s to 100rad / s with a stress of 1% at room temperature, the ink composition.
  • the ink composition is an image, icon, logo or IR pattern.
  • the ink composition of the present invention is remarkably improved in printability. As a result, the ink coated on the pad is completely transferred to the printing site, so that an ink unfilled area does not occur in the printing site.
  • FIG. 1 is a perspective view of an image display apparatus (mobile phone) including a touch screen panel.
  • FIG. 2 is a photograph photographing a printing portion at the time of performing printing with the ink composition of Example 1.
  • FIG. 2 is a photograph photographing a printing portion at the time of performing printing with the ink composition of Example 1.
  • FIG. 3 is a photograph photographing a printing portion at the time of performing printing with the ink composition of Example 2.
  • FIG. 4 is a photograph photographing a printing portion at the time of performing printing with the ink composition of Example 3.
  • FIG. 4 is a photograph photographing a printing portion at the time of performing printing with the ink composition of Example 3.
  • FIG. 5 is a photograph photographing a printing portion at the time of performing printing with the ink composition of Example 4.
  • FIG. 6 is a photograph photographing a printing portion at the time of performing printing with the ink composition of Example 5.
  • FIG. 7 is a photograph photographing a printing portion at the time of performing printing with the ink composition of the comparative example.
  • the present invention includes a colorant, a binder resin, a polymerization initiator and a solvent, and by making the phase angle represented by the formula (1) of 45 ° or more to less than 90 °, the printability is remarkably improved and the ink coated on the pad is printed.
  • the present invention relates to an ink composition for pad printing, which is completely transferred to and does not generate an ink unfilled area in a printing portion.
  • Phase angle ( ⁇ ) arctan (G "/ G ')
  • the ink composition of the present invention can reduce the occurrence of such a problem by having the phase angle range.
  • the phase angle can be measured by using a rheometer by a method known in the art, in the case of the present invention is 0.1 while applying a stress of 1% at room temperature (for example 15 °C to 25 °C) Measurements were made by performing frequency sweeping using each frequency from rad / s to 100 rad / s. The measurement may be performed with frequency sweeping at each frequency from 0.1 rad / s to 10 rad / s.
  • the phase angle measured while performing frequency sweep using each frequency from 0.1 rad / s to 100 rad / s may be 45 ° or more and less than 85 °.
  • the method for adjusting the phase angle is not particularly limited, and for example, the type, content, and particle size of the colorant; Type, content, degree of polymerization of binder resin; The type and content of the polymerization initiator; It can be adjusted according to the type, content and the like of the solvent.
  • the ink composition of the present invention is not particularly limited as long as the object to be printed can be applied to the pad printing method, and may be, for example, a window substrate of an image display apparatus. Specifically, the ink composition of the present invention can be used to form the non-display portion pattern of the window substrate.
  • the non-display portion refers to an edge portion where an image is not displayed in the image display apparatus.
  • This non-display portion is a top layer seen by the consumer, and the light shielding layer is formed so that the lower wiring and the like are not visible to the consumer.
  • a pattern such as an image, an icon, a logo, or an IR pattern may be formed on the non-display portion.
  • An IR pattern refers to a pattern of non-opaque portions through which light of a specific wavelength (eg, infrared light) for a sensor such as an illuminance sensor or a proximity sensor can pass.
  • the ink composition of the present invention is excellent in printability and printed. Since the unfilled region does not occur at the site, it is possible to form a pattern having excellent precision without causing the above problem.
  • the ink composition of this invention contains a coloring agent, binder resin, a polymerization initiator, and a solvent.
  • the colorant according to the present invention may be an organic colorant such as a pigment, a dye, a synthetic or natural pigment, or an inorganic colorant such as a metal oxide, a metal complex salt, or barium sulfate (constitution pigment).
  • organic colorant such as a pigment, a dye, a synthetic or natural pigment
  • inorganic colorant such as a metal oxide, a metal complex salt, or barium sulfate (constitution pigment).
  • colorant compounds classified as pigments and dyes in the Color Index (The Society of Dyers and Colourists) may be used, and these may be used alone or in combination of two or more thereof.
  • pigments include C.I. Pigment Yellow No. 1, 12, 13, 14, 15, 16, 17, 20, 24, 31, 53, 83, 86, 93, 94, 109, 110, 117, 125, 128, 137, 138, 139, 147, 148, 150, 153, 154, 166, 173, 180, 185; C.I. Pigment Orange 13, 31, 36, 38, 40, 42, 43, 51, 55, 59, 61, 64, 65, 71, 73; C.I. Pigment Red No.
  • the dyes include C.I. Solvent yellow 2, 14, 16, 33, 34, 44, 56, 82, 93, 94, 98, 116, 135; C.I. Solvent orange No. 1, No. 3, No. 7, No. 63; C.I. Solvent Red No. 1, 2, 3, 8, 18, 23, 24, 27, 35, 43, 45, 48, 49, 91: 1, 119, 135 No. 140, 196, 197; C.I. Solvent purple 8, 9, 13, 26, 28, 31, 59; C.I. Solvent blue Nos. 4, 5, 25, 35, 36, 38, 70; C.I. Solvent green 3, 5, 7 and the like.
  • Inorganic pigments such as strontium chromium, white carbon, clay, talc, ultramarine blue, precipitated barium sulfate, barite powder, calcium carbonate, lead white, bluish blue, manganese violet, aluminum powder, brass powder, azo lakes, insoluble azo pigments, chelate azo Organic pigments such as pigments, phthalocyanine pigments, perylene and perylene pigments, anthraquinone pigments, quinacridone pigments, dye lake nitro pigments and nitroso pigments.
  • the colorant of the present invention may be a white colorant.
  • the white colorant is not particularly limited as long as it is a white inorganic pigment generally used in the art, for example CI pigment white 4, 5, 6, 6: 1, 7, 18, 18: 1, 19, 20, 22, 25 , 26, 27, 28, 32, alumina white, and the like, and preferably CI pigment white 6 or white 22 in terms of reflection efficiency and whiteness. These can be used individually or in mixture of 2 or more types.
  • TiO 2 included in the CI pigment white 6 is low in cost and high in refractive index, and thus may be used as an effective white colorant because of excellent hiding power and reflectance.
  • the TiO 2 preferably has a rutile structure.
  • the white colorant is organic to remove impurities or to remove impurities by surface treatment with a resin derivative, a pigment derivative having an acidic group or a basic group introduced therein, a graft treatment on a pigment surface with a high molecular compound, a sulfur atomization method, or the like.
  • a washing treatment with a solvent, water, or the like, an ionic impurity removing treatment by an ion exchange method, or the like can also be performed.
  • the colorant may further include other white pigments without departing from the object of the present invention.
  • the colorant may be adjusted in accordance with the required color properties, for example, may be included in 3 to 50% by weight, preferably 7 to 40% by weight of the total weight of the ink composition. When the colorant is included in 3 to 50% by weight it may have excellent colorability and shielding properties without lowering the printability.
  • Binder resin serves as a support body of a pattern, The kind is not specifically limited if it is a well-known thermosetting resin used for an ink composition.
  • the binder resin for example, an acrylic resin having an ethylenically unsaturated group can be used.
  • This resin can use the copolymer manufactured by copolymerizing the monomer containing an acidic radical, and the monomer copolymerizable with this.
  • Examples of the monomer containing an acid group include (meth) acrylic acid, crotonic acid, itaconic acid, maleic acid, fumaric acid, monomethylmaleic acid, isoprenesulfonic acid, styrenesulfonic acid, and the like. Can be.
  • Examples of the monomer copolymerizable with an acid group-containing monomer include styrene, chloro styrene, ⁇ -methylstyrene, vinyltoluene, methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, and benzyl (meth) acrylic.
  • the binder resin copolymer according to the invention can be reacted with reactive monomers for introducing ethylenically unsaturated groups.
  • reactive monomers include glycidyl (meth) acrylate, vinyl benzyl glycidyl ether, vinyl glycidyl ether, allyl glycidyl ether, 4-methyl-4,5-epoxypentene, ⁇ -glycidoxypropyl Trimethoxysilane, (gamma)-glycidoxy propylmethyl diethoxysilane, (gamma)-glycidoxy propyl triethoxysilane, a norbornyl derivative, etc. are mentioned, These can be used individually or in mixture of 2 or more types.
  • the binder resin according to the present invention may also be exemplified a resin having an ethylenic double bond in the side chain, such as polyethylene oxide, polyvinylpyrrolidone, polyamide, polyurethane, polyether, polyester and the like.
  • the production method of the copolymer is not particularly limited, and may be prepared using methods such as bulk polymerization, solution polymerization, emulsion polymerization or suspension polymerization, which are commonly used in the art.
  • the binder resin according to the present invention is not particularly limited in its content within the range capable of its function, for example, may be included in 1 to 85% by weight of the total weight of the ink composition.
  • the content is in the above range, it is possible to improve the yield and process efficiency by increasing the role and pattern transfer rate of the pattern support.
  • the ink composition of the present invention may further comprise a polyfunctional monomer having an ethylenically unsaturated double bond.
  • the polyfunctional monomer which has an ethylenically unsaturated double bond is a 1-6 functional monomer as a component for strengthening the intensity
  • Specific examples include monofunctional compounds such as nonylphenylcarbitol acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-ethylhexyl carbitol acrylate, 2-hydroxyethyl acrylate and N-vinylpyrrolidone.
  • Acid monomers 1,6-hexanediol di (meth) acrylate, ethylene glycol di (meth) acrylate, neopentyl glycol di (meth) acrylate, triethylene glycol di (meth) acrylate, bis (acryloyl of bisphenol A Difunctional monomers such as oxyethyl) ether and 3-methylpentanediol di (meth) acrylate; Trifunctional monomers such as trimethylolpropane tri (meth) acrylate and pentaerythritol tri (meth) acrylate; Tetrafunctional monomers such as pentaerythritol tetra (meth) acrylate; 5-functional monomers, such as dipentaerythritol penta (meth) acrylate; 6-functional monomers, such as dipentaerythritol hexa (meth) acrylate, etc. are mentioned. These can be used individually or in mixture of 2 or more types.
  • the polyfunctional monomer having an ethylenically unsaturated double bond may be included in 1 to 10% by weight of the total weight of the ink composition. If the content is within the above range, good pattern strength can be obtained.
  • thermal polymerization initiator a known thermal polymerization initiator may be used.
  • thermal polymerization initiators containing sulfonium cations and anions have better stability over time and better shrinkage ratio characteristics than other types of thermal polymerization initiators. It is preferable at the point which can improve the adhesiveness between an ink composition and a printed object.
  • These polymerization initiators can be used individually or in mixture of 2 or more types.
  • sulfonium cation constituting the polymerization initiator examples include triphenylsulfonium, tris (4-tolyl) sulfonium, tris (4-isopropylphenyl) sulfonium, tris (2,6-dimethylphenyl) sulfonium, tris (4-cyanophenyl) sulfonium, tris (4-chlorophenyl) sulfonium, diphenyl (4-hydroxyphenyl) sulfonium, methylphenyl (4-hydroxyphenyl) sulfonium, dibenzylphenylsulfonium, di Benzyl (4-hydroxyphenyl) sulfonium, benzylmethyl (4-hydroxyphenyl) sulfonium, benzylmethyl (4-acetoxyphenyl) sulfonium, methyl (4-hydroxyphenyl) (2-methylphenyl) sulfonium ,
  • the type of the anion constituting the polymerization initiator is not particularly restricted but includes, for example, F -, Cl -, Br - , I - halogen ion and the like; OH -; ClO 4 -; FSO 3 -, ClSO 3 -, CH 3 SO 3 -, C 6 H 5 SO 3 -, CF 3 SO 3 - of a sulfonic acid ion, and the like; Sulfate ions such as HSO 4 - and SO 4 2- ; Carbonate ions such as HCO 3 - and CO 3 2- ; H 2 PO 4 -, HPO 4 phosphate ions, such as 2-, PO 4 3-; PF 6 -, PF 5 OH - phosphate ions, such as fluoro; BF 4 -, B (C 6 F 5) 4 -, B (C 6 H 4 CF 3) 4 - , etc.
  • borate ions AlCl 4 -; BiF 6 -; SbF 6 -, SbF 5 OH - antimony acid ion such as fluoro; ASF 6 -, AsF 5 OH -, and the like, such as ion-fluoro lobby dissipation.
  • the content of the polymerization initiator according to the present invention is not particularly limited within the range capable of performing its function, for example, may be included in 0.1 to 10% by weight of the total weight of the ink composition, preferably 0.1 to 3% by weight May be included.
  • the content of the thermal polymerization initiator is 0.1 to 10% by weight, it is possible to secure appropriate polymerization degree and coating property and at the same time effectively improve the adhesion to the printed material.
  • the solvent may be selected from the group consisting of ethylene glycol monoalkyl ethers such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, and ethylene glycol monobutyl ether in consideration of solubility, dispersibility of a colorant, coating properties, and the like; Diethylene glycol dialkyl ethers such as diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol dipropyl ether, and diethylene glycol dibutyl ether; Ethylene glycol alkyl ether acetates such as methyl cellosolve acetate and ethyl cellosolve acetate; Alkylene glycol alkyl ether acetates such as propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, propylene glycol monopropyl ether acetate, methoxy butyl acetate
  • the ink composition of the present invention may be used in combination with additives such as surfactants, fillers, curing agents, adhesion promoters, antioxidants, ultraviolet absorbers, dispersants, etc. according to the needs of those skilled in the art within the scope of not impairing the object of the present invention. .
  • the storage modulus and loss modulus of the ink compositions of Examples and Comparative Examples were subjected to a stress of 1% using MCR-302 (Anton Parr) at 25 ° C., and the frequency sweep mode (0.1 rad / s to 10 rad / s or 0.1 rad / s). To 100 rad / s). The phase angle was derived from the measured storage modulus and loss modulus. The results are shown in Table 2 below.
  • the formed non-display portion pattern was observed with an optical microscope to evaluate light leakage, and the results are shown in Table 3 below.
  • the contamination of the non-printed site was evaluated according to the following criteria as to whether or not the ink accompanied the pad when the pad was raised to the highest point, and the results are shown in Table 3 below.
  • Example 3 the composition of Examples 1 to 5 was confirmed that the printability is very excellent because there is no ink unfilled portion in the printed portion does not generate light leakage. In addition, when the pad was spaced apart from the printing site after printing, the ink did not stick to the pad at all, and the surroundings were not contaminated.
  • Example 6 had a slightly contaminated periphery of the printing site, out of 85 ° in which the phase angle was in the preferred range, but showed excellent overall performance.
  • composition of the comparative example had an unfilled area of ink and had a light leakage area.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)

Abstract

La présente invention concerne une composition d'encre pour tampographie et, plus particulièrement, une composition d'encre pour tampographie, la composition d'encre contenant un colorant, une résine liante, un initiateur de polymérisation et un solvant. L'angle de phase exprimé par l'équation 1 n'est pas inférieur à 45 ° mais inférieur à 90 ° afin d'améliorer remarquablement l'aptitude à l'impression, transférant ainsi complètement l'encre appliquée sur un tampon à une partie imprimée, et ainsi, la région non remplie d'encre n'est pas générée dans la partie imprimée.
PCT/KR2014/009942 2013-11-04 2014-10-22 Composition d'encre pour tampographie Ceased WO2015064950A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2013-0132750 2013-11-04
KR1020130132750A KR20150051391A (ko) 2013-11-04 2013-11-04 패드 인쇄용 잉크 조성물

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WO2015064950A1 true WO2015064950A1 (fr) 2015-05-07

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PCT/KR2014/009942 Ceased WO2015064950A1 (fr) 2013-11-04 2014-10-22 Composition d'encre pour tampographie

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TW (1) TW201529760A (fr)
WO (1) WO2015064950A1 (fr)

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Publication number Priority date Publication date Assignee Title
KR102895653B1 (ko) * 2019-05-02 2025-12-08 삼성디스플레이 주식회사 잉크 조성물, 이를 이용한 윈도우 및 이를 이용한 윈도우 제조 방법
KR102806383B1 (ko) 2019-11-08 2025-05-12 주식회사 케이씨씨 잉크 조성물
KR102316322B1 (ko) 2020-03-12 2021-10-25 주식회사 한솔케미칼 패드 프린팅 공정 적용이 가능한 무용제형 자외선 경화형 블랙잉크 조성물

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008138193A (ja) * 2006-11-08 2008-06-19 Toyo Ink Mfg Co Ltd 高輝度鏡面スクリーンインキおよび該インキを用いてなる印刷物
US7416826B2 (en) * 2002-03-19 2008-08-26 Fuji Xerox Co., Ltd. Color toner for electrophotography and color toner set for electrophotography using the same, color developer for electrophotography, method for forming color image, and apparatus for forming color image
US20090301331A1 (en) * 2008-06-09 2009-12-10 Mikhail Laksin Method of printing and decorating packaging materials with electron beam curable inks
WO2011091364A1 (fr) * 2010-01-22 2011-07-28 Sun Chemical Corporation Piégeage humide d'encres ou de revêtements flexographiques durcissables par application d'énergie
WO2011109391A1 (fr) * 2010-03-01 2011-09-09 Sun Chemical Corporation Viscoélasticité d'encres pour l'impression à grande vitesse

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7416826B2 (en) * 2002-03-19 2008-08-26 Fuji Xerox Co., Ltd. Color toner for electrophotography and color toner set for electrophotography using the same, color developer for electrophotography, method for forming color image, and apparatus for forming color image
JP2008138193A (ja) * 2006-11-08 2008-06-19 Toyo Ink Mfg Co Ltd 高輝度鏡面スクリーンインキおよび該インキを用いてなる印刷物
US20090301331A1 (en) * 2008-06-09 2009-12-10 Mikhail Laksin Method of printing and decorating packaging materials with electron beam curable inks
WO2011091364A1 (fr) * 2010-01-22 2011-07-28 Sun Chemical Corporation Piégeage humide d'encres ou de revêtements flexographiques durcissables par application d'énergie
WO2011109391A1 (fr) * 2010-03-01 2011-09-09 Sun Chemical Corporation Viscoélasticité d'encres pour l'impression à grande vitesse

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KR20150051391A (ko) 2015-05-13
TW201529760A (zh) 2015-08-01

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