CN116852883A - Thermal sublimation carbon ribbon and preparation method thereof - Google Patents
Thermal sublimation carbon ribbon and preparation method thereof Download PDFInfo
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- CN116852883A CN116852883A CN202310834378.0A CN202310834378A CN116852883A CN 116852883 A CN116852883 A CN 116852883A CN 202310834378 A CN202310834378 A CN 202310834378A CN 116852883 A CN116852883 A CN 116852883A
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- 238000000859 sublimation Methods 0.000 title claims abstract description 110
- 230000008022 sublimation Effects 0.000 title claims abstract description 110
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 238000000576 coating method Methods 0.000 claims abstract description 113
- 239000011248 coating agent Substances 0.000 claims abstract description 106
- 239000002904 solvent Substances 0.000 claims abstract description 62
- 238000004132 cross linking Methods 0.000 claims abstract description 48
- 239000007787 solid Substances 0.000 claims abstract description 47
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000010023 transfer printing Methods 0.000 claims abstract description 40
- 239000002245 particle Substances 0.000 claims abstract description 35
- 239000000049 pigment Substances 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 15
- 229920005749 polyurethane resin Polymers 0.000 claims abstract description 14
- 239000000945 filler Substances 0.000 claims abstract description 13
- 239000000314 lubricant Substances 0.000 claims abstract description 13
- 229920002635 polyurethane Polymers 0.000 claims abstract description 13
- 239000004814 polyurethane Substances 0.000 claims abstract description 13
- 239000004698 Polyethylene Substances 0.000 claims abstract description 12
- -1 polyethylene Polymers 0.000 claims abstract description 12
- 229920000573 polyethylene Polymers 0.000 claims abstract description 12
- 239000001023 inorganic pigment Substances 0.000 claims abstract description 10
- 239000011230 binding agent Substances 0.000 claims abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 9
- 239000012948 isocyanate Substances 0.000 claims abstract description 9
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 9
- 229920002799 BoPET Polymers 0.000 claims abstract description 5
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 36
- 238000000227 grinding Methods 0.000 claims description 12
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 claims description 12
- 239000006229 carbon black Substances 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 229920006217 cellulose acetate butyrate Polymers 0.000 claims description 6
- 239000011243 crosslinked material Substances 0.000 claims description 5
- 229920000609 methyl cellulose Polymers 0.000 claims description 5
- 239000001923 methylcellulose Substances 0.000 claims description 5
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims description 4
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 4
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical group O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 4
- 238000007756 gravure coating Methods 0.000 claims description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 4
- 229920002545 silicone oil Polymers 0.000 claims description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 235000012239 silicon dioxide Nutrition 0.000 claims description 3
- 229920001187 thermosetting polymer Polymers 0.000 claims description 3
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 2
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 claims description 2
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 claims description 2
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 2
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 2
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 2
- 229920002554 vinyl polymer Polymers 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000007639 printing Methods 0.000 description 33
- 238000001035 drying Methods 0.000 description 26
- 238000005562 fading Methods 0.000 description 8
- 239000000853 adhesive Substances 0.000 description 7
- 230000001070 adhesive effect Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000005299 abrasion Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- ZTQSAGDEMFDKMZ-UHFFFAOYSA-N Butyraldehyde Chemical compound CCCC=O ZTQSAGDEMFDKMZ-UHFFFAOYSA-N 0.000 description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 230000006750 UV protection Effects 0.000 description 4
- 239000003086 colorant Substances 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 4
- 238000010292 electrical insulation Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 235000010981 methylcellulose Nutrition 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 230000037303 wrinkles Effects 0.000 description 3
- 206010059866 Drug resistance Diseases 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 230000009477 glass transition Effects 0.000 description 2
- 150000002576 ketones Chemical class 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- HGBOYTHUEUWSSQ-UHFFFAOYSA-N valeric aldehyde Natural products CCCCC=O HGBOYTHUEUWSSQ-UHFFFAOYSA-N 0.000 description 2
- 241000872198 Serjania polyphylla Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J31/00—Ink ribbons; Renovating or testing ink ribbons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J31/00—Ink ribbons; Renovating or testing ink ribbons
- B41J31/05—Ink ribbons having coatings other than impression-material coatings
-
- 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
-
- 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
- C09D11/033—Printing inks characterised by features other than the chemical nature of the binder characterised by the solvent
-
- 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
- C09D11/037—Printing inks characterised by features other than the chemical nature of the binder characterised by the pigment
-
- 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
- C09D11/102—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds
-
- 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
- C09D11/106—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
- C09D11/14—Printing inks based on carbohydrates
-
- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
Abstract
The invention provides a thermal sublimation carbon ribbon and a preparation method thereof, wherein a PET film is adopted as a carbon ribbon base film; the back coating comprises 10-15% of organosilicon modified polyurethane, 80-85% of solvent I, 1-5% of solid lubricant and 1-5% of solid filler; the release layer consists of 5-10% of isocyanate curing agent and 90-95% of butanone solvent; the cross-linking layer consists of 20-30% of cross-linking material and 70-80% of solvent II; the thermal transfer printing ink layer consists of 5-15% of polyethylene wax, 10-15% of polyurethane resin, 5-10% of inorganic pigment, 0.5-1% of solid particles and 60-80% of solvent three; the heat sublimation ink layer consists of 5-10% of heat sublimation pigment, 10-20% of binder and 70-80% of solvent. The carbon belt can obviously improve the definition and color vividness of the transferred image of the card, and is not easy to fade after being stored at high and low temperatures for a long time.
Description
Technical Field
The invention belongs to the technical field of thermal sublimation printing, and particularly relates to a thermal sublimation carbon ribbon and a preparation method thereof.
Background
The working principle of the thermal sublimation printer is that solid pigments (called color rolls) of four colors (cyan, magenta, yellow and black, CMYK for short) are arranged on a rotary drum, tens of thousands of semiconductor heating elements are arranged on the rotary drum, when the temperature of the heating elements rises to a certain degree, the solid pigments can be directly converted into a gaseous state (the process that the solid state is changed into the gaseous state without liquefaction is called sublimation, so the printer is called the thermal sublimation printer), and then the gas is sprayed on a printing medium; thermal sublimation printing technology is commonly used to replace traditional pictorial printing because of its ability to achieve continuous tone printing. At present, the situation that the thermal sublimation carbon ribbon is directly applied to the card printing exists in the market, but the problem that the color density is low, the image definition, the resolution and the color vividness are insufficient during the image transfer exists, so that the thermal sublimation printing is limited to a certain extent, and therefore, a new thermal sublimation carbon ribbon capable of being better applied to the card printing needs to be searched.
Disclosure of Invention
According to the thermal sublimation carbon ribbon and the preparation method thereof, the cross-linking layer is arranged on the carbon ribbon base film, and after cross-linking, the adhesive force of the coating is improved, so that the thermal sublimation carbon ribbon cannot be subjected to thermal transfer printing and can only sublimate, the stability of a printing effect is ensured, and the definition and the color vividness of an image are improved.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a thermal sublimation carbon ribbon, characterized in that: comprises a base film, a back coating, a release layer, a crosslinking layer, a thermal transfer printing ink layer and a thermal sublimation ink layer; wherein the base film is preferably a 4-6 μm thick PET film; the back coating is coated on the lower surface of the base film, the release layer and the crosslinking layer are coated on the left part and the right part of the upper surface of the base film side by side, the thermal transfer printing ink layer is coated above the release layer, and the thermal sublimation ink layer is coated above the crosslinking layer;
the back coating comprises 10-15% of organosilicon modified polyurethane, 80-85% of solvent I, 1-5% of solid lubricant and 1-5% of solid filler by weight;
the solid lubricant is silicone oil, has heat resistance, electrical insulation, weather resistance and compression resistance, and greatly improves the heat resistance of the back coating;
the solid filler is talcum powder with the particle size of 300nm-5 mu m and has lubricity;
the organic silicon modified polyurethane is a modified resin prepared from organic silicon oligomer and polyurethane resin, and has excellent heat resistance and weather resistance;
the back coating has the main functions of adapting to high-speed printing of a thermal sublimation printer, improving the heat resistance and lubricity of a base film, preventing the problems of adhesion and printing wrinkles caused by the heat of a thermal head in the printing process, and ensuring the heat transfer of the printing head on the premise that the base film is not melted in a high-heat printing state;
the coating solution of the release layer consists of 5-10% of isocyanate curing agent and 90-95% of butanone solvent by weight, and has the main function of assisting the pigment in the thermal transfer printing ink layer to be completely transferred onto the sample so as to realize complete separation from the base film;
the coating solution of the crosslinked layer consists of 20-30% of crosslinked material and 70-80% of solvent II;
the cross-linking material is one or more of polyvinylpyrrolidone, polyvinyl alcohol, polyvinyl acetal, polyvinyl butyral and methylcellulose, preferably methylcellulose, the coating thickness is 0.1-0.5 mu m, preferably 0.1-0.3 mu m, and if the coating thickness is too low or too high, the printing color fading risk is caused;
the crosslinking layer mainly has the function of increasing the adhesiveness between the heat sublimation ink layer and the base film, and the dye layer is not dropped to cause abnormal fading caused by poor adhesive force when printing, but simultaneously, the dye can diffuse towards two opposite directions of a printed matter and the crosslinking layer when heating, so that the crosslinking layer preferably meets the resin or sol with poor dye adsorptivity and excellent adhesive force on a substrate;
the coating ink of the thermal transfer printing ink layer consists of 5-15% of polyethylene wax, 10-15% of polyurethane resin, 5-10% of inorganic pigment, 0.5-1% of solid particles and 60-80% of solvent III;
the polyethylene wax has excellent cold resistance, heat resistance, chemical resistance and abrasion resistance; the light resistance and the chemical property are good, the glossiness, the durability, the hardness and the abrasion resistance of the thermal transfer printing ink layer can be improved, and the water resistance and the drug resistance can be increased;
the polyurethane resin is a high molecular compound, so that the ink is well adhered to the base material, and the wear resistance of the thermal transfer printing ink layer is improved due to the good water resistance, surfactant resistance, temperature resistance and ductility of the polyurethane resin;
the solid particles are one of silicon dioxide, zinc stearate and thermosetting acrylic acid particles; the solid particles can improve the lubrication effect, improve the adverse effect of the high-temperature and high-humidity environment on the carbon tape in the storage and transportation processes, and ensure the normal printing quality;
the coating ink of the thermal sublimation ink layer comprises 5-10% of thermal sublimation pigment, 10-20% of binder and 70-80% of solvent IV by weight;
the weight ratio of the solvent I to the solvent II is 1:1 toluene and butanone; the solvent III consists of the following components in percentage by weight: toluene and butanone of 1.1; the solvent IV consists of 25-30% of butanone, 30-35% of toluene, 10-20% of DMF and 15-35% of ethylene glycol butyl ether by weight;
the thermal sublimation carbon ribbon is black, red, yellow and blue carbon ribbon; the thermal transfer printing ink layer is black, and the inorganic pigment is preferably carbon black with good coloring effect;
the heat sublimation ink layer is sequentially red, yellow and blue from left to right; the sublimation pigment is preferably sublimation red, yellow or blue monochromatic pigment with the sublimation temperature of 150-250 ℃ corresponding to the three-color carbon bands;
the connecting material consists of 30-50% of cellulose acetate butyrate and 50-70% of polyvinyl butyral by weight;
the cellulose acetate butyrate has excellent moisture resistance, ultraviolet resistance, cold resistance, flexibility, transparency and electrical insulation properties, can have better compatibility with resin and high-boiling plasticizer, plays a role in protecting a thermal sublimation printing ink layer, increases the friction resistance and ultraviolet resistance of the thermal sublimation printing ink layer, and plays a role in improving the resolution and definition of images;
the polyvinyl butyral is a product obtained by condensing polyvinyl alcohol and butyraldehyde under the catalysis of acid, and has good flexibility, low glass transition temperature, high tensile strength and impact strength because the molecules of the polyvinyl butyral contain longer branched chains, and in addition, the polyvinyl butyral has good transparency, good solubility and good light resistance, water resistance, heat resistance, cold resistance and film forming property, and can be dissolved in most alcohol/ketone/ether/ester organic solvents; the flatness and the high/low temperature resistance of the thermal sublimation ink layer can be enhanced, so that the thermal sublimation carbon tape can be stored for a long time, and the problems of falling off and powder falling of the thermal sublimation ink layer are not easy to occur in the transportation process; and meanwhile, the excellent film forming property also improves the integrity and resolution of the printed image.
The preparation method of the thermal sublimation carbon ribbon comprises the following steps:
s1, preparing a back coating: dissolving organosilicon modified polyurethane in a solvent I, adding a solid lubricant and a solid filler, and uniformly dispersing by using a dispersing machine;
preparation of release layer solution: dissolving 5-10% of isocyanate curing agent in 90-95% of butanone solvent, and uniformly dispersing;
preparing a crosslinked layer solution: dissolving the cross-linked material in a second solvent, uniformly dispersing, and grinding by a grinder until the particle size is 1.6-1.8 mu m;
preparing ink of a thermal transfer printing ink layer: dissolving polyethylene wax and solid particles by using a solvent III to resinize polyurethane; adding carbon black, dispersing uniformly, and grinding to a particle size of 1.4-1.6 mu m;
preparing ink of a thermal sublimation ink layer: the preparation method comprises the following steps of respectively preparing red, yellow and blue ink, wherein the preparation steps of the three-color ink are the same: dissolving the binder with solvent IV, adding the sublimation pigment, dispersing uniformly, and grinding with grinder to particle diameter smaller than 2 μm;
s2, back coating: coating back coating on the lower surface of the base film by adopting a 400-500 wire mesh roller in a gravure coating mode through a coating machine, wherein the coating thickness of the back coating is 0.1-0.3 mu m, and the drying temperature is 100-120 ℃;
s3, coating a release layer and a crosslinking layer: a 300-wire mesh roller is adopted, release layer solution and crosslinking layer solution are respectively coated on the left part and the right part of the upper surface of the base film by a coating machine, the coating thickness of the release layer is 1.0-1.2 mu m, and the drying temperature is 60-80 ℃; the thickness of the crosslinked layer coating is 0.1-0.5 μm, and further, the thickness of the crosslinked layer coating is preferably 0.1-0.3 μm, and the drying temperature is 70-80 ℃;
s4, coating the thermal transfer printing ink layer and the thermal sublimation ink layer: and (3) adopting a 100-wire mesh roller, and respectively coating the thermal transfer printing ink layer ink and the thermal sublimation ink layer ink on the release layer and the crosslinking layer through a coating machine, wherein the coating thickness of the thermal transfer printing ink layer and the thermal sublimation ink layer is 0.9-1.1 mu m, and the drying temperature is 90-125 ℃.
The invention also includes other components that enable normal use thereof, all as is conventional in the art, and in addition, the devices or components not defined in the invention are all well known in the art.
The beneficial effects of the invention are as follows:
the thermal sublimation carbon tape provided by the invention is more suitable for card printing, the definition of printed images and characters is obviously improved, the color reduction degree is close to that of a manuscript, obvious chromatic aberration is avoided, and friction resistance and adhesive force are also obviously improved; the printed card can be well suitable for long-time storage at high and low temperatures, the phenomenon of unclear writing, light or fading of image colors can not occur, and the printing quality of the card can be remarkably improved.
Drawings
FIG. 1 is a schematic diagram of the layered structure of a thermal sublimation carbon ribbon of the invention.
FIG. 2 is a flow chart of a method for preparing a thermal sublimation carbon ribbon according to the invention.
Detailed Description
The technical solutions of the present invention will be clearly and completely described below in connection with specific embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
It should be noted that, the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", etc. are shown based on the drawings, and are merely for convenience of description.
Example 1
As shown in fig. 1, a thermal sublimation carbon ribbon is characterized in that: comprises a base film 1, a back coating 6, a release layer 3, a crosslinking layer 2, a thermal transfer printing ink layer 4 and a thermal sublimation ink layer 5; wherein the base film is a PET film with the thickness of 6 mu m; the back coating is coated on the lower surface of the base film, the release layer and the crosslinking layer are coated on the left part and the right part of the upper surface of the base film side by side, the thermal transfer printing ink layer is coated above the release layer, and the thermal sublimation ink layer is coated above the crosslinking layer;
the back coating comprises 14% of organosilicon modified polyurethane, 80% of solvent I, 1% of solid lubricant and 5% of solid filler by weight;
the solid lubricant is silicone oil, has heat resistance, electrical insulation, weather resistance and compression resistance, and greatly improves the heat resistance of the back coating;
the solid filler is talcum powder with the particle size of 300 nm;
the organic silicon modified polyurethane is a modified resin prepared from organic silicon oligomer and polyurethane resin, and has excellent heat resistance and weather resistance;
the back coating has the main functions of adapting to high-speed printing of a thermal sublimation printer, improving the heat resistance and lubricity of a base film, preventing the problems of adhesion and printing wrinkles caused by the heat of a thermal head in the printing process, and ensuring the heat transfer of the printing head on the premise that the base film is not melted in a high-heat printing state;
the coating solution of the release layer consists of 10% of isocyanate curing agent and 90% of butanone solvent by weight, and the coating solution has the main function of assisting the pigment in the thermal transfer printing ink layer to be completely transferred onto the sample so as to realize complete separation from the base film;
the coating solution of the crosslinking layer consists of 20% of crosslinking material and 80% of solvent II;
the cross-linking material is methyl cellulose, the coating thickness is 0.1 mu m, and if the coating thickness is too low or too high, the printing color fading risk is caused;
the crosslinking layer mainly has the function of increasing the adhesiveness between the heat sublimation ink layer and the base film, and the dye layer is not dropped to cause abnormal fading caused by poor adhesive force when printing, but simultaneously, the dye can diffuse towards two opposite directions of a printed matter and the crosslinking layer when heating, so that the crosslinking layer preferably meets the resin or sol with poor dye adsorptivity and excellent adhesive force on a substrate;
the coating ink of the thermal transfer printing ink layer consists of polyethylene wax, polyurethane resin, inorganic pigment, solid particles and solvent III, wherein the polyethylene wax, the polyurethane resin, the inorganic pigment, the solid particles and the solvent III are respectively 5% and 10% by weight;
the polyethylene wax has excellent cold resistance, heat resistance, chemical resistance and abrasion resistance; the light resistance and the chemical property are good, the glossiness, the durability, the hardness and the abrasion resistance of the thermal transfer printing ink layer can be improved, and the water resistance and the drug resistance can be increased;
the polyurethane resin is a high molecular compound, so that the ink is well adhered to the base material, and the wear resistance of the thermal transfer printing ink layer is improved due to the good water resistance, surfactant resistance, temperature resistance and ductility of the polyurethane resin;
the solid particles adopt silicon dioxide or zinc stearate;
the coating ink of the thermal sublimation ink layer comprises 6.5% of thermal sublimation pigment, 19.5% of binder and 74% of solvent IV by weight;
the weight ratio of the solvent I to the solvent II is 1:1 toluene and butanone; the solvent III consists of the following components in percentage by weight: toluene and butanone of 1.1; the solvent IV consists of 30% of butanone, 35% of toluene, 20% of DMF and 15% of ethylene glycol butyl ether by weight;
the thermal sublimation carbon ribbon is black, red, yellow and blue carbon ribbon; the thermal transfer printing ink layer is black, and the inorganic pigment is carbon black;
the heat sublimation ink layers are sequentially a red heat sublimation ink layer 5-1, a yellow heat sublimation ink layer 5-2 and a blue heat sublimation ink layer 5-3 from left to right; the sublimation pigment is sublimation red, yellow or blue monochromatic pigment with the sublimation temperature of 150 ℃ corresponding to the carbon bands with three colors;
the connecting material consists of 30% of cellulose acetate butyrate and 70% of polyvinyl butyral by weight;
the cellulose acetate butyrate has excellent moisture resistance, ultraviolet resistance, cold resistance, flexibility, transparency and electrical insulation properties, can have better compatibility with resin and high-boiling plasticizer, plays a role in protecting a thermal sublimation printing ink layer, increases the friction resistance and ultraviolet resistance of the thermal sublimation printing ink layer, and plays a role in improving the resolution and definition of images;
the polyvinyl butyral is a product obtained by condensing polyvinyl alcohol and butyraldehyde under the catalysis of acid, and has good flexibility, low glass transition temperature, high tensile strength and impact strength because the molecules of the polyvinyl butyral contain longer branched chains, and in addition, the polyvinyl butyral has good transparency, good solubility and good light resistance, water resistance, heat resistance, cold resistance and film forming property, and can be dissolved in most alcohol/ketone/ether/ester organic solvents; the flatness and the high/low temperature resistance of the thermal sublimation ink layer can be enhanced, so that the thermal sublimation carbon tape can be stored for a long time, and the problems of falling off and powder falling of the thermal sublimation ink layer are not easy to occur in the transportation process; and meanwhile, the excellent film forming property also improves the integrity and resolution of the printed image.
As shown in fig. 2, the preparation method of the sublimation carbon ribbon is as follows:
s1, preparing a back coating: dissolving organosilicon modified polyurethane in a solvent I, adding a solid lubricant and a solid filler, and uniformly dispersing by using a dispersing machine; the solid content of the back coating paint is 3%;
preparation of release layer solution: dissolving 10% of isocyanate curing agent in 90% of butanone solvent, and uniformly dispersing; the stirring speed of the dispersing machine is 800r/min, and the dispersing is carried out for 30 minutes;
preparing a crosslinked layer solution: dissolving the cross-linked material in a second solvent, uniformly dispersing, and grinding by a grinder until the particle size is 1.6 mu m; the rotating speed is 900r/min, and the dispersion is carried out for 60 minutes;
preparing ink of a thermal transfer printing ink layer: dissolving polyurethane resin by using a solvent III, redissolving polyethylene wax and solid particles, and dispersing for 30 minutes at the rotating speed of a dispersing machine of 900 r/min; adding carbon black, dispersing uniformly, and grinding to a particle size of 1.6 mu m by using a grinder; the rotating speed is 1200r/min, and the dispersion is carried out for 30 minutes;
preparing ink of a thermal sublimation ink layer: the preparation method comprises the following steps of respectively preparing red, yellow and blue ink, wherein the preparation steps of the three-color ink are the same: dissolving the binder with solvent IV, adding the sublimation pigment, dispersing uniformly, and grinding with grinder to particle diameter smaller than 2 μm; the rotating speed of the dispersing machine is 1200r/min, and the dispersing is carried out for 30 minutes;
s2, back coating: coating back coating on the lower surface of the base film by adopting a 400-wire mesh roller and adopting a gravure coating mode through a coating machine, wherein the coating thickness is 0.1 mu m, and the drying temperature is 100 ℃;
the back coating process comprises the following steps: unreeling a base film, controlling tension, coating a back coating, drying, traction and reeling.
S3, coating a release layer and a crosslinking layer: a 300-wire mesh roller is adopted, release layer solution and crosslinking layer solution are respectively coated on the left part and the right part of the upper surface of the base film through a coating machine, the coating thickness of the release layer is 1.0 mu m, and the drying temperature is 60 ℃; the coating thickness of the crosslinked layer is 0.1 mu m, and the drying temperature is 70 ℃;
the release layer and the crosslinking layer coating process are as follows: unreeling the back-coated base film, controlling tension, coating a release layer, drying, coating a crosslinking layer, drying, traction and reeling.
S4, coating the thermal transfer printing ink layer and the thermal sublimation ink layer: and (3) using a 100-wire mesh roller, and respectively coating the thermal transfer printing ink layer ink and the thermal sublimation ink layer ink on the release layer and the crosslinking layer by using a coating machine, wherein the coating thickness of the thermal transfer printing ink layer and the thermal sublimation ink layer is 0.9 mu m, and the drying temperature is 90 ℃.
A coating process of a thermal transfer printing ink layer and a thermal sublimation ink layer: unreeling a base film after coating a release layer and a crosslinking layer, controlling tension, printing black, drying, overprinting red, drying, overprinting yellow, drying, overprinting blue, drying, traction and reeling.
Example 2
As shown in fig. 1, a thermal sublimation carbon ribbon is characterized in that: comprises a base film 1, a back coating 6, a release layer 3, a crosslinking layer 2, a thermal transfer printing ink layer 4 and a thermal sublimation ink layer 5; wherein the base film is a PET film with the thickness of 4 mu m; the back coating is coated on the lower surface of the base film, the release layer and the crosslinking layer are coated on the left part and the right part of the upper surface of the base film side by side, the thermal transfer printing ink layer is coated above the release layer, and the thermal sublimation ink layer is coated above the crosslinking layer;
the back coating comprises 10% of organosilicon modified polyurethane, 84% of solvent I, 5% of solid lubricant and 1% of solid filler by weight;
the solid lubricant is silicone oil; the solid filler is talcum powder with the particle size of 5 mu m;
the coating solution of the release layer consists of 5% of isocyanate curing agent and 95% of butanone solvent by weight;
the coating solution of the crosslinking layer consists of 30% of crosslinking material and 70% of solvent II;
the crosslinking material is methyl cellulose, and the coating thickness is 0.5 mu m;
the coating ink of the thermal transfer printing ink layer consists of 15% of polyethylene wax, 14.5% of polyurethane resin, 10% of inorganic pigment, 0.5% of solid particles and 60% of solvent III;
the solid particles are thermosetting acrylic particles; the solid particles can improve the lubrication effect;
the coating ink of the thermal sublimation ink layer comprises 8.5% of thermal sublimation pigment, 11.5% of binder and 80% of solvent IV by weight;
the weight ratio of the solvent I to the solvent II is 1:1 toluene and butanone; the solvent III consists of the following components in percentage by weight: toluene and butanone of 1.1; the solvent IV consists of 25% of butanone, 30% of toluene, 10% of DMF and 35% of ethylene glycol butyl ether by weight;
the thermal sublimation carbon ribbon is black, red, yellow and blue carbon ribbon; the thermal transfer printing ink layer is black, and the inorganic pigment is carbon black;
the heat sublimation ink layers are sequentially a red heat sublimation ink layer 5-1, a yellow heat sublimation ink layer 5-2 and a blue heat sublimation ink layer 5-3 from left to right; the sublimation pigment is sublimation red, yellow or blue monochromatic pigment with the sublimation temperature of 250 ℃ corresponding to the carbon bands with three colors;
the connecting material consists of 50% of cellulose acetate butyrate and 50% of polyvinyl butyral by weight;
as shown in fig. 2, the preparation method of the sublimation carbon ribbon is as follows:
s1, preparing a back coating: dissolving organosilicon modified polyurethane in a solvent I, adding a solid lubricant and a solid filler, and uniformly dispersing by using a dispersing machine; the solid content of the back coating paint is 4%;
preparation of release layer solution: dissolving 5% of isocyanate curing agent in 95% of butanone solvent, and uniformly dispersing; the stirring speed of the dispersing machine is 800r/min, and the dispersing is carried out for 30 minutes;
preparing a crosslinked layer solution: dissolving the cross-linked material in a second solvent, uniformly dispersing, and grinding by a grinder until the particle size is 1.8 mu m; the rotating speed is 1200r/min, and the dispersion is carried out for 30 minutes;
preparing ink of a thermal transfer printing ink layer: dissolving polyurethane resin by using a solvent III, redissolving polyethylene wax and solid particles, and dispersing for 30 minutes at the rotating speed of a dispersing machine of 900 r/min; adding carbon black, dispersing uniformly, and grinding to a particle size of 1.4 mu m by using a grinder; the rotating speed is 900r/min, and the dispersion is carried out for 30 minutes;
preparing ink of a thermal sublimation ink layer: the preparation method comprises the following steps of respectively preparing red, yellow and blue ink, wherein the preparation steps of the three-color ink are the same: dissolving the binder with solvent IV, adding the sublimation pigment, dispersing uniformly, and grinding with grinder to particle diameter smaller than 2 μm; the rotating speed of the dispersing machine is 900r/min, and the dispersing is carried out for 60 minutes;
s2, back coating: coating back coating on the lower surface of the base film by adopting a 500-wire mesh roller and adopting a gravure coating mode by a coating machine, wherein the coating thickness is 0.3 mu m, and the drying temperature is 120 ℃;
the back coating process comprises the following steps: unreeling a base film, controlling tension, coating a back coating, drying, traction and reeling.
S3, coating a release layer and a crosslinking layer: a 300-wire mesh roller is adopted, release layer solution and crosslinking layer solution are respectively coated on the left part and the right part of the upper surface of the base film by a coating machine, the coating thickness of the release layer is 1.2 mu m, and the drying temperature is 80 ℃; the coating thickness of the crosslinked layer is 0.3 mu m, and the drying temperature is 80 ℃;
the release layer and the crosslinking layer coating process are as follows: unreeling the back-coated base film, controlling tension, coating a release layer, drying, coating a crosslinking layer, drying, traction and reeling.
S4, coating the thermal transfer printing ink layer and the thermal sublimation ink layer: and (3) using a 100-wire mesh roller, and respectively coating the thermal transfer printing ink layer ink and the thermal sublimation ink layer ink on the release layer and the crosslinking layer by using a coating machine, wherein the coating thickness of the thermal transfer printing ink layer and the thermal sublimation ink layer is 1.1 mu m, and the drying temperature is 125 ℃.
A coating process of a thermal transfer printing ink layer and a thermal sublimation ink layer: unreeling a base film after coating a release layer and a crosslinking layer, controlling tension, printing black, drying, overprinting red, drying, overprinting yellow, drying, overprinting blue, drying, traction and reeling.
The coating machines used in the above coating processes were each Bei Demei g of a chromatography gravure press from the company of science and technology mechanical Co., ltd.
The thermal sublimation carbon tape provided by the invention has the advantages that the definition of the printed card images and characters is obviously improved, the color reduction degree is close to that of a sample manuscript, no obvious chromatic aberration exists, and the friction resistance and the adhesive force are also obviously improved; the printed card can be well suitable for long-time storage at high and low temperatures, and the phenomenon that writing is unclear, the color of an image becomes light or fades is not found.
Detecting each color area of the card by adopting an X-riteexact densimeter, wherein the density values are about 2.1; the alcohol friction-resistant testing machine G288 is adopted for testing, the speed of 40 times/min is continuously rubbed for 200 times, obvious abrasion does not occur on the card, obvious fading does not occur on the handwriting image, the speed of 60 times/min is continuously rubbed for 150 times, obvious abrasion does not occur on the card, and obvious fading does not occur on the handwriting image; the soft rubber is replaced, a force of 10N is applied, the back and forth friction is carried out for 250 times at 40 times/min, the back and forth friction is carried out for 200 times at 60 times/min, and the card has no obvious change.
Using Tesa adhesive tape (7475) to adhere on the handwriting and the image of the certificate card, smoothing bubbles and wrinkles, standing for 1-2 minutes, rapidly tearing the adhesive tape in a mode of being perpendicular to the card surface, ensuring that characters and images are not defective, and standing at a high temperature of 60 ℃ and a low temperature of-18 ℃ without obvious change of printing effect; after 30 days of storage at high and low temperature, no phenomenon of unclear handwriting, light color or fading of images is found.
The technical solution of the present invention is not limited to the above-described specific embodiments, and many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments, and any technical modifications made within the spirit and principles of the present invention fall within the scope of the present invention.
Claims (8)
1. A thermal sublimation carbon ribbon, characterized in that: the thermal transfer printing ink layer is coated above the release layer, and the thermal sublimation ink layer is coated above the crosslinking layer; wherein the base film is a PET film with the thickness of 4-6 mu m; the coating material of the back coating comprises 10-15% of organosilicon modified polyurethane, 80-85% of solvent I, 1-5% of solid lubricant and 1-5% of solid filler by weight; the coating solution of the release layer consists of 5-10% of isocyanate curing agent and 90-95% of butanone solvent by weight; the coating solution of the crosslinked layer consists of 20-30% of crosslinked material and 70-80% of solvent II; the coating ink of the thermal transfer printing ink layer consists of 5-15% of polyethylene wax, 10-15% of polyurethane resin, 5-10% of inorganic pigment, 0.5-1% of solid particles and 60-80% of solvent III; the coating ink of the thermal sublimation ink layer consists of 5-10% of thermal sublimation pigment, 10-20% of binder and 70-80% of solvent.
2. A thermal sublimation carbon belt as recited in claim 1, wherein: the thermal transfer ink layer is black, and the inorganic pigment is preferably carbon black; the solid particles are one of silicon dioxide, zinc stearate and thermosetting acrylic acid particles.
3. A thermal sublimation carbon belt as recited in claim 1, wherein: the crosslinking material is one or more of polyvinylpyrrolidone, polyvinyl alcohol, polyvinyl acetal, polyvinyl butyral and methylcellulose.
4. A thermal sublimation carbon belt as recited in claim 1, wherein: the heat sublimation ink layer is sequentially red, yellow and blue from left to right, and the heat sublimation pigment is preferably sublimation red, yellow or blue monochromatic pigment with the heat sublimation temperature of 150-250 ℃.
5. The thermal sublimation carbon ribbon and the preparation method thereof according to claim 1, wherein: the solid lubricant is silicone oil, and the solid filler is talcum powder with the particle size of 300nm-5 mu m.
6. A thermal sublimation carbon belt as recited in claim 1, wherein: the weight ratio of the solvent I to the solvent II is 1:1 toluene and butanone; the solvent III consists of the following components in percentage by weight: toluene and butanone of 1.1; the solvent IV consists of 25-30% of butanone, 30-35% of toluene, 10-20% of DMF and 15-35% of ethylene glycol butyl ether by weight.
7. A thermal sublimation carbon belt as recited in claim 1, wherein: the connecting material consists of 30-50% of cellulose acetate butyrate and 50-70% of polyvinyl butyral by weight.
8. The method for producing a thermal sublimation carbon ribbon as claimed in any one of claims 1 to 7, comprising:
s1, preparing a back coating: dissolving organosilicon modified polyurethane in a solvent I, adding a solid lubricant and a solid filler, and uniformly dispersing;
preparation of release layer solution: dissolving 5-10% of isocyanate curing agent in 90-95% of butanone solvent, and uniformly dispersing;
preparing a crosslinked layer solution: dissolving the cross-linking material in a second solvent, uniformly dispersing, and grinding to a particle size of 1.6-1.8 mu m;
preparing ink of a thermal transfer printing ink layer: dissolving polyethylene wax and solid particles by using a solvent III to resinize polyurethane; adding carbon black, dispersing uniformly, and grinding to a particle size of 1.4-1.6 mu m;
preparing ink of a thermal sublimation ink layer: the preparation method comprises the following steps of respectively preparing red, yellow and blue ink, wherein the preparation steps of the three-color ink are the same: dissolving the binder with solvent IV, adding thermal sublimation pigment, dispersing uniformly, and grinding to particle size smaller than 2 μm;
s2, back coating: coating back coating on the lower surface of the base film in a gravure coating mode by a coating machine, wherein the thickness of the back coating is 0.1-0.3 mu m;
s3, coating a release layer and a crosslinking layer: coating release layer solution and crosslinking layer solution on the left and right parts of the upper surface of the base film respectively, wherein the thickness of the release layer is 1.0-1.2 mu m, and the thickness of the crosslinking layer is 0.1-0.5 mu m;
s4, coating the thermal transfer printing ink layer and the thermal sublimation ink layer: coating the thermal transfer printing ink layer ink and the thermal sublimation ink layer ink on the release layer and the crosslinking layer respectively, wherein the thickness of the thermal transfer printing ink layer is 0.9-1.1 mu m; the thickness of the thermal sublimation ink layer is 0.9-1.1 mu m.
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