CN111100504A - Water-based high-temperature-resistant ink for thermal paper printing and preparation method thereof - Google Patents
Water-based high-temperature-resistant ink for thermal paper printing and preparation method thereof Download PDFInfo
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- CN111100504A CN111100504A CN202010076202.XA CN202010076202A CN111100504A CN 111100504 A CN111100504 A CN 111100504A CN 202010076202 A CN202010076202 A CN 202010076202A CN 111100504 A CN111100504 A CN 111100504A
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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
- C09D11/30—Inkjet printing inks
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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
- C09D11/30—Inkjet printing inks
- C09D11/38—Inkjet printing inks characterised by non-macromolecular additives other than solvents, pigments or dyes
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Abstract
The invention relates to the field of water-based ink, and provides water-based high-temperature-resistant ink for printing thermal paper, which comprises the following raw materials in percentage by weight: 40-90% of water-based high-temperature-resistant acrylic emulsion, 1-50% of water-based color paste, 1-20% of cosolvent, 0.2-5% of auxiliary agent and the balance of filler; the auxiliary agent comprises at least one of a wetting agent, a defoaming agent, a leveling agent, an anti-settling agent, a preservative and a dispersing agent.
Description
Technical Field
The invention relates to the field of water-based ink, in particular to water-based high-temperature-resistant ink for thermal paper printing and a preparation method thereof.
Background
With the rapid development of express delivery industry in recent years, the usage amount of domestic thermosensitive labels is rapidly developed. The merchant needs to print various colors on the surface of the thermal paper to distinguish the labels, so that the working efficiency is improved. The thermal printer has the working principle that a semiconductor heating element is arranged on a printing head, and the printing head can print required patterns after being heated and contacting thermal printing paper. The image is generated by heating to cause a chemical reaction in the film. The chemical reaction of the thermal printer is carried out at a certain temperature. High temperatures accelerate this chemical reaction. When the temperature is lower than 60 ℃, the paper needs to be changed into dark color for a long time, even for several years; and when the temperature is 200 ℃, the reaction is completed within several microseconds. Therefore, the ink printed on the surface of the thermal paper label is required to have excellent high temperature resistance, and if the high temperature resistance of the ink is poor, a needle can be jammed in the printing process, so that the continuous printing can not be realized, and the efficiency is influenced.
Disclosure of Invention
In order to solve the technical problems, the first aspect of the invention provides an aqueous high-temperature resistant ink for thermal paper printing, which comprises the following raw materials in percentage by weight: 40-90% of water-based high-temperature-resistant acrylic emulsion, 1-50% of water-based color paste, 1-20% of cosolvent, 0.2-5% of auxiliary agent and the balance of filler; the auxiliary agent comprises at least one of a wetting agent, a defoaming agent, a leveling agent, an anti-settling agent, a preservative and a dispersing agent.
As a preferable technical scheme, the minimum film forming temperature of the water-based high-temperature-resistant acrylic emulsion is 40-120 ℃.
As a preferable technical scheme, the water-based high-temperature-resistant acrylic emulsion is styrene-acrylic emulsion and/or pure acrylic emulsion.
As a preferred technical solution, the cosolvent in the present invention is an alcohol ester solvent and/or an alcohol solvent.
In a preferred embodiment of the present invention, the filler is at least one selected from among light calcium carbonate, talc, kaolin, polyvinyl alcohol, and paraffin.
In a preferred embodiment, the auxiliary agent in the present invention includes at least one of an aqueous wetting agent, an aqueous defoaming agent, an aqueous leveling agent, an aqueous anti-settling agent, and an aqueous preservative.
In a preferred embodiment, the auxiliary agent further comprises at least one of an aqueous anti-wear agent, a thickener, and a pH adjuster.
As a preferred technical scheme, the water-based color paste is a high-temperature-resistant color paste.
The preparation method of the water-based high-temperature resistant ink for printing the thermal paper at least comprises the following steps:
(1) grinding: weighing part of the aqueous high-temperature-resistant acrylic emulsion, adding part of cosolvent, dispersant and filler, and grinding and dispersing to obtain grinding slurry;
(2) stirring: and (2) taking the ground slurry obtained in the step (1), further adding the rest of the aqueous high-temperature-resistant acrylic emulsion, the rest of the cosolvent and other rest raw materials, mixing and stirring uniformly with water, wherein the stirring speed is 500-2000r/min, and adding water to adjust the viscosity after stirring for 20-60min, so as to obtain the aqueous high-temperature-resistant ink for printing on the thermal paper.
As a preferable technical scheme, the fineness of the grinding slurry in the step (1) is less than or equal to 20 microns; the room temperature viscosity of the water-based high-temperature resistant ink for printing the thermal paper in the step (2) is less than or equal to 50s (coating a No. 4 cup).
Compared with the prior art, the invention has the following beneficial effects:
the water-based high-temperature-resistant ink for printing the thermal paper has the advantages of high temperature resistance and low cost, does not block a printing head, has good transparency, does not cause unclear printing, can effectively reduce the probability of blocking the printing head when the printer works, and improves the service life and the working efficiency of the printing head.
Detailed Description
The disclosure may be understood more readily by reference to the following detailed description of preferred embodiments of the invention and the examples included therein. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the present specification, including definitions, will control.
The term "prepared from …" as used herein is synonymous with "comprising". The terms "comprises," "comprising," "includes," "including," "has," "having," "contains," "containing," or any other variation thereof, as used herein, are intended to cover a non-exclusive inclusion. For example, a composition, process, method, article, or apparatus that comprises a list of elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, process, method, article, or apparatus.
The conjunction "consisting of …" excludes any unspecified elements, steps or components. If used in a claim, the phrase is intended to claim as closed, meaning that it does not contain materials other than those described, except for the conventional impurities associated therewith. When the phrase "consisting of …" appears in a clause of the subject matter of the claims rather than immediately after the subject matter, it defines only the elements described in the clause; other elements are not excluded from the claims as a whole.
When an amount, concentration, or other value or parameter is expressed as a range, preferred range, or as a range of upper preferable values and lower preferable values, this is to be understood as specifically disclosing all ranges formed from any pair of any upper range limit or preferred value and any lower range limit or preferred value, regardless of whether ranges are separately disclosed. For example, when a range of "1 to 5" is disclosed, the described range should be interpreted to include the ranges "1 to 4", "1 to 3", "1 to 2 and 4 to 5", "1 to 3 and 5", and the like. When a range of values is described herein, unless otherwise stated, the range is intended to include the endpoints thereof and all integers and fractions within the range.
Approximating language, as used herein throughout the specification and claims, is intended to modify a quantity, such that the invention is not limited to the specific quantity, but includes portions that are literally received for modification without substantial change in the basic function to which the invention is related. Accordingly, the use of "about" to modify a numerical value means that the invention is not limited to the precise value. In some instances, the approximating language may correspond to the precision of an instrument for measuring the value. In the present description and claims, range limitations may be combined and/or interchanged, including all sub-ranges contained therein if not otherwise stated.
In addition, the indefinite articles "a" and "an" preceding an element or component of the invention are not intended to limit the number requirement (i.e., the number of occurrences) of the element or component. Thus, "a" or "an" should be read to include one or at least one, and the singular form of an element or component also includes the plural unless the stated number clearly indicates that the singular form is intended.
The invention provides a water-based high-temperature-resistant ink for printing on thermal paper, which comprises the following raw materials in percentage by weight: 40-90% of water-based high-temperature-resistant acrylic emulsion, 1-50% of water-based color paste, 1-20% of cosolvent, 0.2-5% of auxiliary agent and the balance of filler; the auxiliary agent comprises at least one of a wetting agent, a defoaming agent, a leveling agent, an anti-settling agent, a preservative and a dispersing agent.
In some preferred embodiments, the aqueous high temperature resistant ink for thermal paper printing comprises the following raw materials in percentage by weight: 50-80% of water-based high-temperature-resistant acrylic emulsion, 10-35% of water-based color paste, 5-15% of cosolvent, 2-4% of auxiliary agent and the balance of filling material.
In some more preferred embodiments, the aqueous high temperature resistant ink for thermal paper printing comprises the following raw materials in percentage by weight: 65% of water-based high-temperature-resistant acrylic emulsion, 15% of water-based color paste, 8% of cosolvent, 3% of auxiliary agent and the balance of filling material.
In some embodiments, the minimum film forming temperature of the aqueous, high temperature resistant acrylic emulsion is from 40 to 120 ℃.
In some embodiments, the aqueous high temperature resistant acrylic emulsion is a styrene-acrylic emulsion and/or a acrylic emulsion.
In some embodiments, the styrene acrylic emulsion is an unmodified styrene acrylic emulsion and/or a modified styrene acrylic emulsion.
In some embodiments, the aqueous high temperature resistant acrylic emulsion is an aqueous acrylic emulsion.
In some embodiments, the co-solvent is an alcohol ester solvent and/or an alcohol solvent; preferably, the cosolvent is an alcohol ester solvent.
In some embodiments, the alcohol-based solvent is selected from at least one of n-propyl acetate, ethyl acetate, glycol ester, methyl methacrylate, and methyl acrylate; preferably, the alcohol ester solvent is at least one selected from n-propyl acetate and ethyl acetate; more preferably, the alcohol ester solvent is ethyl acetate.
In some embodiments, the alcoholic solvent is selected from at least one of isopropanol, ethylene glycol, 1, 4-butanediol, methylpropanediol, neopentyl glycol, 1, 4-cyclohexanedimethanol, propanol, n-butanol, n-pentanol, n-hexanol, n-heptanol, n-octanol, n-nonanol, n-decanol; preferably, the alcohol solvent is at least one selected from the group consisting of isopropanol, methyl propylene glycol, neopentyl glycol, and 1, 4-cyclohexanedimethanol; more preferably, the alcoholic solvent is isopropanol.
In some embodiments, the filler is selected from at least one of light calcium carbonate, talc, kaolin, polyvinyl alcohol, paraffin; preferably, the filler is selected from at least one of talcum powder and paraffin; more preferably, the filler is talc.
In some embodiments, the adjuvant comprises at least one of an aqueous wetting agent, an aqueous defoamer, an aqueous leveling agent, an aqueous anti-settling agent, an aqueous preservative; preferably, the auxiliary agent comprises at least one of an aqueous wetting agent, an aqueous defoaming agent, an aqueous leveling agent and an aqueous preservative; more preferably, the auxiliary agent comprises a combination of an aqueous wetting agent, an aqueous defoaming agent, an aqueous leveling agent and an aqueous preservative.
In some embodiments, the adjuvant further comprises at least one of an aqueous anti-wear agent, a thickener, a pH adjuster; preferably, the auxiliary agent further comprises a pH regulator.
In some embodiments, the adjuvant is a combination of an aqueous wetting agent, an aqueous defoamer, an aqueous leveling agent, an aqueous preservative, a dispersant, a pH adjuster.
In some embodiments, the mass ratio of the aqueous wetting agent, the aqueous defoaming agent, the aqueous leveling agent, the dispersing agent, the pH adjusting agent and the aqueous preservative is 5: 2: 2: 2: 3: 0.5.
the defoaming agent is prepared from the following components in parts by weight: REGO-8050, TEGO-825, ADDITOL VXL 4951, and LUOBOMU 384.
The leveling agent is prepared from the following components in parts by weight: TEGO FLOW 425 and DAPRO-77.
The pH regulator is as follows: ammonia water, DMA, and MP-95.
The wetting agent is any one of OT-75, ADDITOL XL 6521, MODAFLOW AQ3000 and WDF-104.
The antiseptic has the brands of BT-20, BT-50 and,
Any one of LXEs.
The grade of the dispersant is any one of TEGO 760W, ADDITOL6394 and TROYSPERSE 90W.
In some embodiments, the aqueous color paste is a CLARIANT series high temperature resistant color paste.
The second aspect of the invention provides a preparation method of the water-based high-temperature resistant ink for printing on the thermal paper, which at least comprises the following steps:
(1) grinding: weighing part of the aqueous high-temperature-resistant acrylic emulsion, adding part of cosolvent, dispersant and filler, and grinding and dispersing to obtain grinding slurry;
(2) stirring: and (2) taking the ground slurry obtained in the step (1), further adding the rest of the aqueous high-temperature-resistant acrylic emulsion, the rest of the cosolvent and other rest raw materials, mixing and stirring uniformly with water, wherein the stirring speed is 500-2000r/min, and adding water to adjust the viscosity after stirring for 20-60min, so as to obtain the aqueous high-temperature-resistant ink for printing on the thermal paper.
In some preferred embodiments, the preparation method of the aqueous high temperature resistant ink for thermal paper printing at least comprises the following steps:
(1) grinding: weighing part of the aqueous high-temperature-resistant acrylic emulsion, adding part of cosolvent, dispersant and filler, and grinding and dispersing to obtain grinding slurry;
(2) stirring: and (2) taking the ground slurry obtained in the step (1), further adding the rest of the aqueous high-temperature-resistant acrylic emulsion, the rest of the cosolvent and other rest raw materials, mixing and stirring uniformly with water, wherein the stirring speed is 1500r/min, and adding water to adjust the viscosity after stirring for 40min, so as to obtain the aqueous high-temperature-resistant ink for printing on thermal paper.
In some embodiments, the fineness of the step (1) ground slurry is less than or equal to 20 μm; preferably, the fineness of the grinding slurry in the step (1) is less than or equal to 10 mu m.
In some embodiments, the room temperature viscosity of the aqueous high temperature resistant ink that can be used for thermal paper printing in step (2) is ≦ 50s (coating cup No. 4).
The present invention will be specifically described below by way of examples. It should be noted that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention, and that the insubstantial modifications and adaptations of the present invention by those skilled in the art based on the above disclosure are still within the scope of the present invention.
In addition, the starting materials used are all commercially available, unless otherwise specified.
Example 1
The water-based high-temperature-resistant ink for printing on the thermal paper comprises the following raw materials in percentage by weight: 65% of water-based acrylic emulsion, 15% of cosolvent, 12% of water-based color paste, 6% of talcum powder and 2% of auxiliary agent. The auxiliary agent is a combination of a defoaming agent, a flatting agent, a pH regulator, a wetting agent, a preservative and a dispersing agent, and the weight ratio is 5: 2: 2: 2: 3: 0.5.
the preparation method of the water-based high-temperature resistant ink for printing the thermal paper at least comprises the following steps:
(1) grinding: weighing 20 wt% of the water-based acrylic emulsion, adding 35 wt% of the cosolvent, a dispersant and a filler, and grinding and dispersing to obtain grinding slurry;
(2) stirring: and (2) taking the ground slurry obtained in the step (1), further adding the rest of the aqueous high-temperature-resistant acrylic emulsion, the rest of the cosolvent and other rest raw materials, mixing and stirring uniformly with water, wherein the stirring speed is 1000r/min, and adding water to adjust the viscosity after stirring for 40min, so as to obtain the aqueous high-temperature-resistant ink for printing on thermal paper.
The aqueous acrylic emulsion provides aqueous acrylic emulsion, model BLJ-2061, to baolika chemical company.
The antifoaming agent is luobu 384.
The leveling agent is of the brand of DAPRO-77.
The pH regulator is MP-95.
The wetting agent is identified as WDF-104.
The preservative is BT-20.
The dispersant is available under the trademark TROYSPERSE 90W.
The cosolvent is ethyl acetate.
The fineness of the ground slurry in the step (1) is less than or equal to 20 mu m; the room temperature viscosity of the water-based high-temperature resistant ink for printing the thermal paper in the step (2) is less than or equal to 50s (coating a No. 4 cup).
Example 2
The water-based high-temperature-resistant ink for printing on the thermal paper comprises the following raw materials in percentage by weight: 45% of water-based acrylic emulsion, 5% of cosolvent, 35% of water-based color paste, 15% of paraffin and 2% of auxiliary agent. The auxiliary agent is a combination of a defoaming agent, a flatting agent, a pH regulator, a wetting agent, a preservative and a dispersing agent, and the weight ratio is 5: 2: 2: 2: 3: 0.5.
the preparation method of the water-based high-temperature resistant ink for printing the thermal paper at least comprises the following steps:
(1) grinding: weighing 20 wt% of the water-based acrylic emulsion, adding 35 wt% of the cosolvent, a dispersant and a filler, and grinding and dispersing to obtain grinding slurry;
(2) stirring: and (2) taking the ground slurry obtained in the step (1), further adding the rest of the aqueous high-temperature-resistant acrylic emulsion, the rest of the cosolvent and other rest raw materials, mixing and stirring uniformly with water, wherein the stirring speed is 1000r/min, and adding water to adjust the viscosity after stirring for 40min, so as to obtain the aqueous high-temperature-resistant ink for printing on thermal paper.
The antifoaming agent is luobu 384.
The leveling agent is of the brand of DAPRO-77.
The pH regulator is MP-95.
The wetting agent is identified as WDF-104.
The preservative is BT-20.
The dispersant is available under the trademark TROYSPERSE 90W.
The cosolvent is isopropanol.
The fineness of the ground slurry in the step (1) is less than or equal to 20 mu m; the room temperature viscosity of the water-based high-temperature resistant ink for printing the thermal paper in the step (2) is less than or equal to 50s (coating a No. 4 cup).
Performance testing
The aqueous high temperature inks prepared in examples 1 and 2 were coated on a machine according to a method known to those skilled in the art. The coated thermal paper was subjected to a printing test.
The test result shows that both samples can be printed smoothly, the phenomenon of printing head blockage is avoided, the transparency is good, the condition of unclear printing is avoided, and the samples are qualified, otherwise, the samples are unqualified.
Table 1 results of performance testing
| Examples | Example 1 | Example 2 |
| Test results | Qualified | Qualified |
The foregoing examples are merely illustrative and serve to explain some of the features of the method of the present invention. The appended claims are intended to claim as broad a scope as is contemplated, and the examples presented herein are merely illustrative of selected implementations in accordance with all possible combinations of examples. Accordingly, it is applicants' intention that the appended claims are not to be limited by the choice of examples illustrating features of the invention. Also, where numerical ranges are used in the claims, subranges therein are included, and variations in these ranges are also to be construed as possible being covered by the appended claims.
Claims (10)
1. The water-based high-temperature-resistant ink for printing on thermal paper is characterized by comprising the following raw materials in percentage by weight: 40-90% of water-based high-temperature-resistant acrylic emulsion, 1-50% of water-based color paste, 1-20% of cosolvent, 0.2-5% of auxiliary agent and the balance of filler; the auxiliary agent comprises at least one of a wetting agent, a defoaming agent, a leveling agent, an anti-settling agent, a preservative and a dispersing agent.
2. The aqueous high temperature resistant ink for thermal paper printing according to claim 1, wherein the minimum film forming temperature of the aqueous high temperature resistant acrylic emulsion is 40 to 120 ℃.
3. The aqueous high-temperature-resistant ink for thermal paper printing according to claim 1 or 2, wherein the aqueous high-temperature-resistant acrylic emulsion is a styrene-acrylic emulsion and/or a pure acrylic emulsion.
4. The aqueous high temperature resistant ink for thermal paper printing according to claim 1, wherein the cosolvent is an alcohol ester solvent and/or an alcohol solvent.
5. The aqueous high temperature resistant ink for thermal paper printing according to claim 1, wherein the filler is at least one selected from the group consisting of light calcium carbonate, talc, kaolin, polyvinyl alcohol, and paraffin.
6. The aqueous high temperature resistant ink for thermal paper printing according to claim 1, wherein the auxiliary agent comprises at least one of an aqueous wetting agent, an aqueous defoaming agent, an aqueous leveling agent, an aqueous anti-settling agent, and an aqueous preservative.
7. The aqueous high temperature resistant ink for thermal paper printing according to claim 1 or 6, wherein the auxiliary agent further comprises at least one of an aqueous wear resistant agent, a thickener, and a pH adjuster.
8. The aqueous high-temperature-resistant ink for thermal paper printing according to claim 1, wherein the aqueous color paste is a high-temperature-resistant color paste.
9. A method for preparing the aqueous high temperature resistant ink for thermal paper printing according to any one of claims 1 to 8, characterized by at least comprising the following steps:
(1) grinding: weighing part of the aqueous high-temperature-resistant acrylic emulsion, adding part of cosolvent, dispersant and filler, and grinding and dispersing to obtain grinding slurry;
(2) stirring: taking the ground slurry obtained in the step (1), further adding the rest of the aqueous high-temperature-resistant acrylic emulsion, the rest of the cosolvent and other rest raw materials and water, mixing and stirring uniformly, wherein the stirring speed is 500-2000r/min, adding water to adjust the viscosity after stirring for 20-60min, and obtaining the aqueous high-temperature-resistant ink for printing on the thermal paper as claimed in any one of claims 1-8.
10. The method for preparing the aqueous high-temperature-resistant ink for thermal paper printing according to claim 9, wherein the fineness of the ground slurry in the step (1) is less than or equal to 20 μm.
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| CN115353772A (en) * | 2022-08-26 | 2022-11-18 | 无锡市春阳印刷包装有限公司 | Thermochromic water-based ink for paper material and preparation method thereof |
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| CN115353772A (en) * | 2022-08-26 | 2022-11-18 | 无锡市春阳印刷包装有限公司 | Thermochromic water-based ink for paper material and preparation method thereof |
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