CN114457617A - Inkless thermal printing paper and preparation method thereof - Google Patents
Inkless thermal printing paper and preparation method thereof Download PDFInfo
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- CN114457617A CN114457617A CN202011253278.1A CN202011253278A CN114457617A CN 114457617 A CN114457617 A CN 114457617A CN 202011253278 A CN202011253278 A CN 202011253278A CN 114457617 A CN114457617 A CN 114457617A
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- inkless
- coating
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- component
- layer
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- 238000007651 thermal printing Methods 0.000 title claims abstract description 17
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000011248 coating agent Substances 0.000 claims abstract description 49
- 238000000576 coating method Methods 0.000 claims abstract description 49
- 239000010410 layer Substances 0.000 claims abstract description 38
- 239000011347 resin Substances 0.000 claims abstract description 35
- 229920005989 resin Polymers 0.000 claims abstract description 35
- 239000011241 protective layer Substances 0.000 claims abstract description 24
- 239000002904 solvent Substances 0.000 claims abstract description 18
- 239000002318 adhesion promoter Substances 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 12
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 12
- 239000002270 dispersing agent Substances 0.000 claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 10
- 239000011247 coating layer Substances 0.000 claims abstract description 9
- HGAZMNJKRQFZKS-UHFFFAOYSA-N chloroethene;ethenyl acetate Chemical compound ClC=C.CC(=O)OC=C HGAZMNJKRQFZKS-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000000758 substrate Substances 0.000 claims abstract description 4
- JMXKSZRRTHPKDL-UHFFFAOYSA-N titanium ethoxide Chemical compound [Ti+4].CC[O-].CC[O-].CC[O-].CC[O-] JMXKSZRRTHPKDL-UHFFFAOYSA-N 0.000 claims description 16
- 239000012752 auxiliary agent Substances 0.000 claims description 12
- -1 polytetrafluoroethylene Polymers 0.000 claims description 10
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 9
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 9
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 claims description 8
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 claims description 8
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims description 8
- NIQCNGHVCWTJSM-UHFFFAOYSA-N Dimethyl phthalate Chemical compound COC(=O)C1=CC=CC=C1C(=O)OC NIQCNGHVCWTJSM-UHFFFAOYSA-N 0.000 claims description 6
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 6
- 239000000945 filler Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 239000002033 PVDF binder Substances 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 230000006750 UV protection Effects 0.000 claims description 3
- QYKIQEUNHZKYBP-UHFFFAOYSA-N Vinyl ether Chemical compound C=COC=C QYKIQEUNHZKYBP-UHFFFAOYSA-N 0.000 claims description 3
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 claims description 3
- FBSAITBEAPNWJG-UHFFFAOYSA-N dimethyl phthalate Natural products CC(=O)OC1=CC=CC=C1OC(C)=O FBSAITBEAPNWJG-UHFFFAOYSA-N 0.000 claims description 3
- 229960001826 dimethylphthalate Drugs 0.000 claims description 3
- 229920002493 poly(chlorotrifluoroethylene) Polymers 0.000 claims description 3
- 239000005023 polychlorotrifluoroethylene (PCTFE) polymer Substances 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229920002620 polyvinyl fluoride Polymers 0.000 claims description 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 3
- 229920002545 silicone oil Polymers 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 125000006850 spacer group Chemical group 0.000 claims description 2
- 238000007639 printing Methods 0.000 abstract description 6
- 230000002745 absorbent Effects 0.000 abstract description 4
- 239000002250 absorbent Substances 0.000 abstract description 4
- 230000032683 aging Effects 0.000 abstract description 4
- 238000005562 fading Methods 0.000 abstract description 4
- 230000003678 scratch resistant effect Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 3
- 239000000843 powder Substances 0.000 description 4
- 229910014314 BYK190 Inorganic materials 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 101000623895 Bos taurus Mucin-15 Proteins 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical class F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229920002433 Vinyl chloride-vinyl acetate copolymer Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/20—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/56—Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H19/60—Polyalkenylalcohols; Polyalkenylethers; Polyalkenylesters
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/80—Paper comprising more than one coating
- D21H19/82—Paper comprising more than one coating superposed
- D21H19/828—Paper comprising more than one coating superposed two superposed coatings, the first applied being non-pigmented and the second applied being pigmented
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
- D21H25/04—Physical treatment, e.g. heating, irradiating
- D21H25/06—Physical treatment, e.g. heating, irradiating of impregnated or coated paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/30—Multi-ply
Abstract
The invention relates to a inkless thermal printing paper and a preparation method thereof, wherein the inkless thermal printing paper comprises a paper substrate, a precoating layer and an inkless coating; the precoating layer comprises vinyl chloride-vinyl acetate resin, an adhesion promoter and a solvent, the inkless coating layer comprises a first component and a second component, and the first component comprises the following materials in percentage by mass: 2-10% of polyvinyl alcohol, 5-15% of black dye, 0-10% of dispersing agent and 70-80% of water; the component two comprises the following materials in percentage by mass: 2-10% of polyvinyl alcohol, 5-15% of color developing agent, 0-10% of dispersing agent and 70-80% of water; the ratio of the first component to the second component is 1: 1-1: 2. The invention has smooth surface, fresh and alive color, distinct gradation and high resolution after printing; the surface is provided with a protective layer, so that the oil-proof, water-proof, anti-corrosion and scratch-resistant performances are good, and the service life is long; the anti-ultraviolet aging agent and the ultraviolet absorbent are added, so that the situations such as fading and the like can be effectively inhibited.
Description
Technical Field
The invention relates to the technical field of printing consumables, in particular to inkless thermal printing paper and a preparation method thereof.
Background
The structure of the inkless printing paper currently used in the market generally consists of four layers, which are respectively: the ink-free printing paper comprises a paper base layer, an ink-free coating and a protective layer, wherein the ink-free coating mostly uses fluorane compounds, and the ink-free coating is heated by a heating head of a printer to display black characters and patterns. The preparation process includes coating fine powder of colorless dye phenol or other acid matter on common paper base, melting the film under heating condition and mixing the powder to produce color reaction.
However, due to the simple process and low use requirement, the printed paper is unstable in color-developing handwriting, fades after a long time, is not suitable for long-term storage, is mainly applied to supermarket shopping tickets, logistics express bills, bank POS bills and the like at present, is printed quickly and does not need long-term storage.
Disclosure of Invention
The invention aims to simplify the preparation process of the thermal printing paper, simplify the preparation process, effectively inhibit the fading and the like of the thermal printing paper by adding the anti-ultraviolet aging agent and the ultraviolet absorbent, and increase a protective layer on the surface, thereby being waterproof, oil-proof, pollution-proof, scratch-resistant and capable of being stored for a long time.
The specific solution provided by the invention is as follows:
an inkless thermal printing paper comprises a paper substrate, a precoating layer and an inkless coating layer; the precoating layer comprises vinyl chloride-vinyl acetate resin, an adhesion promoter and a solvent, wherein the vinyl chloride-vinyl acetate resin accounts for 5-30% of the mass percentage; the adhesion promoter is selected from one or more of tetraethyl titanate and n-butyl titanate, and accounts for 0-2% by mass; the solvent is one or more selected from butanone, toluene and ethyl acetate, and accounts for 68-95% by mass;
the inkless coating comprises a first component and a second component, wherein the first component comprises the following materials in percentage by mass: 2-10% of polyvinyl alcohol, 5-15% of black dye, 0-10% of dispersing agent and 70-80% of water; the component two comprises the following materials in percentage by mass: 2-10% of polyvinyl alcohol, 5-15% of color developing agent, 0-10% of dispersing agent and 70-80% of water; the proportion of the first component to the second component is 1:1 to 1: 2.
Preferably, the inkless coating further comprises an ultraviolet resistance auxiliary agent which accounts for 0.5-1% by mass.
Preferably, the protective layer further comprises a protective layer, wherein the protective layer comprises fluorocarbon resin, an adhesion promoter, a solvent and an auxiliary agent, the fluorocarbon resin is selected from one or more of polytetrafluoroethylene resin, polyvinylidene fluoride resin, polychlorotrifluoroethylene resin, vinyl ether resin and polyvinyl fluoride resin and accounts for 5-30% by mass, the adhesion promoter is selected from one or more of tetraethyl titanate and n-butyl titanate and accounts for 0-2% by mass, the solvent is water and accounts for 60-85% by mass, and the auxiliary agent is selected from one or more of dibutyl phthalate, dimethyl phthalate, polyethylene wax and dimethyl silicone oil and accounts for 2-5% by mass.
Preferably, the composite material further comprises an intermediate spacing layer which is a mixture of resin and filler.
A preparation method of inkless thermal printing paper comprises the following steps:
s1, preparing a pre-coating solution, coating the pre-coating solution on a paper base layer by using a 3# wire bar, and putting the paper base layer into an oven, wherein the temperature range of the oven is 100-120 ℃, and the time is 2-5 min;
s2, preparing an inkless coating solution, coating the inkless coating solution on the precoating layer by using a 3# wire rod, and putting the precoating layer into an oven, wherein the temperature range of the oven is 50-80 ℃, and the time is 2-5 min;
s3, preparing a protective layer solution, coating the protective layer solution on the inkless coating by using a 3# wire bar, and putting the inkless coating into an oven, wherein the temperature range of the oven is 50-80 ℃, and the time is 2-5 min.
Preferably, the thickness of each of the precoat layer, the inkless coating layer and the protective layer ranges from 1 to 20 μm.
In summary, the technical scheme provided by the invention has the following beneficial effects:
(1) the ink, the ink powder or the carbon ribbon does not need to be matched, the direct and quick printing can be realized, the material is saved, and the environment is protected;
(2) the printed surface is smooth, the color is fresh and vivid, the layers are distinct, and the resolution ratio is high;
(3) the surface is provided with a protective layer, so that the oil-proof, water-proof, anti-corrosion and scratch-resistant performances are good, and the service life is long;
(4) the anti-ultraviolet aging agent and the ultraviolet absorbent are added, so that the situations such as fading and the like can be effectively inhibited.
Detailed Description
The following detailed description of the embodiments of the present invention is intended to be illustrative, and not to be construed as limiting the invention.
An inkless thermal printing paper comprises a paper substrate, a precoating layer and an inkless coating layer; the precoating layer comprises vinyl chloride-vinyl acetate resin, an adhesion promoter and a solvent, wherein the vinyl chloride-vinyl acetate resin accounts for 5-30% of the mass percentage; the adhesion promoter is selected from one or more of tetraethyl titanate and n-butyl titanate, and accounts for 0-2% by mass; the solvent is one or more selected from butanone, toluene and ethyl acetate, and accounts for 68-95% by mass;
the inkless coating comprises a first component and a second component, wherein the first component comprises the following materials in percentage by mass: 2-10% of polyvinyl alcohol, 5-15% of black dye, 0-10% of dispersing agent and 70-80% of water; the component two comprises the following materials in percentage by mass: 2-10% of polyvinyl alcohol, 5-15% of color developing agent, 0-10% of dispersing agent and 70-80% of water; the proportion of the first component to the second component is 1:1 to 1: 2.
The inkless coating further comprises an ultraviolet resistance auxiliary agent which accounts for 0.5-1% of the mass percentage.
The protective layer comprises fluorocarbon resin, an adhesion promoter, a solvent and an auxiliary agent, wherein the fluorocarbon resin is selected from one or more of polytetrafluoroethylene resin, polyvinylidene fluoride resin, polychlorotrifluoroethylene resin, vinyl ether resin and polyvinyl fluoride resin and accounts for 5-30% by mass, the adhesion promoter is selected from one or more of tetraethyl titanate and n-butyl titanate and accounts for 0-2% by mass, the solvent is water and accounts for 60-85% by mass, and the auxiliary agent is selected from one or more of dibutyl phthalate, dimethyl phthalate, polyethylene wax and dimethyl silicone oil and accounts for 2-5% by mass.
Also comprises an intermediate spacing layer which is a mixture of resin and filler.
A preparation method of inkless thermal printing paper comprises the following steps:
s1, preparing a pre-coating solution, coating the pre-coating solution on a paper base layer by using a 3# wire bar, and putting the paper base layer into an oven, wherein the temperature range of the oven is 100-120 ℃, and the time is 2-5 min;
s2, preparing an inkless coating solution, coating the inkless coating solution on the precoating layer by using a 3# wire rod, and putting the precoating layer into an oven, wherein the temperature range of the oven is 50-80 ℃, and the time is 2-5 min;
s3, preparing a protective layer solution, coating the protective layer solution on the inkless coating by using a 3# wire bar, and putting the inkless coating into an oven, wherein the temperature range of the oven is 50-80 ℃, and the time is 2-5 min.
The thickness range of each layer of the precoating layer, the inkless coating layer and the protective layer is 1-20 mu m.
Detailed description of the preferred embodiment
The precoating layer formula comprises: 5% of vinyl chloride-vinyl acetate copolymer, 2% of tetraethyl titanate serving as an adhesion promoter and butanone serving as a solvent.
The formula of the inkless coating comprises the following components:
the component one: 2% of polyvinyl alcohol (PVA), 15% of black dye, BYK190 as a dispersing agent and water as a solvent are taken, and then grinding is carried out, wherein the particle size range of the black dye is 300-500 nm.
And (2) component two: taking 5% of polyvinyl alcohol (PVA), 10% of color developing agent, BYK190 as dispersant and water as solvent, and then grinding, wherein the diameter range of the color developing agent is 300-500 nm.
And mixing the ground component I and the ground component II according to a ratio of 1:1, adding 0.5% of anti-ultraviolet auxiliary agent, and preparing the heat-sensitive coating ink.
The protective layer comprises fluorocarbon resin, an adhesion promoter, a solvent and an auxiliary agent, wherein the fluorocarbon resin is selected from polytetrafluoroethylene resin and accounts for 7% by mass, the adhesion promoter is selected from tetraethyl titanate and accounts for 2% by mass, the solvent is water and accounts for 85% by mass, and the auxiliary agent is selected from dibutyl phthalate and accounts for 5% by mass.
A preparation method of inkless thermal printing paper comprises the following steps:
s1, preparing a pre-coating solution, coating the pre-coating solution on a paper base layer by using a 3# wire bar, and putting the paper base layer into an oven, wherein the temperature range of the oven is 100-120 ℃, and the time is 2-5 min;
s2, preparing an inkless coating solution, coating the inkless coating solution on the precoating layer by using a 3# wire rod, and putting the precoating layer into an oven, wherein the temperature range of the oven is 50-80 ℃, and the time is 2-5 min;
s3, preparing a protective layer solution, coating the protective layer solution on the inkless coating by using a 3# wire bar, and putting the inkless coating into an oven, wherein the temperature range of the oven is 50-80 ℃, and the time is 2-5 min.
The embodiment described above further includes an intermediate spacer layer, which is a mixture of resin and filler, and mainly plays a role of separating temperature intervals, so as to avoid mutual influence between the color development layers with different temperature responses.
The thickness range of each layer of the pre-coating layer, the inkless coating layer and the protective layer is 1-20 mu m.
The above-mentioned dispersant can also be selected from one or more of BYK190, BYK2012 or BYK 3455.
In summary, the technical scheme provided by the invention has the following beneficial effects:
(1) the ink, the ink powder or the carbon ribbon does not need to be matched, the direct and quick printing can be realized, the material is saved, and the environment is protected;
(2) the printed surface is smooth, the color is fresh and vivid, the layers are distinct, and the resolution ratio is high;
(3) the surface is provided with a protective layer, so that the oil-proof, water-proof, anti-corrosion and scratch-resistant performances are good, and the service life is long;
(4) the anti-ultraviolet aging agent and the ultraviolet absorbent are added, so that the situations such as fading and the like can be effectively inhibited.
Although embodiments of the present invention have been described in detail above, those of ordinary skill in the art will understand that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (6)
1. The inkless thermal printing paper is characterized by comprising a paper substrate, a precoating layer and an inkless coating layer; the precoating layer comprises vinyl chloride-vinyl acetate resin, an adhesion promoter and a solvent, wherein the vinyl chloride-vinyl acetate resin accounts for 5-30% of the mass percentage; the adhesion promoter is selected from one or more of tetraethyl titanate and n-butyl titanate, and accounts for 0-2% by mass; the solvent is one or more selected from butanone, toluene and ethyl acetate, and accounts for 68-95% by mass;
the inkless coating comprises a first component and a second component, wherein the first component comprises the following materials in percentage by mass: 2-10% of polyvinyl alcohol, 5-15% of black dye, 0-10% of dispersing agent and 70-80% of water; the component two comprises the following materials in percentage by mass: 2-10% of polyvinyl alcohol, 5-15% of color developing agent, 0-10% of dispersing agent and 70-80% of water; the proportion of the first component to the second component is 1:1 to 1: 2.
2. The inkless thermal printing paper according to claim 1, wherein the inkless coating layer further comprises an ultraviolet resistance auxiliary agent in an amount of 0.5 to 1% by mass.
3. The inkless thermal printing paper according to claim 1, further comprising a protective layer, wherein the protective layer comprises 5 to 30% by mass of fluorocarbon resin, adhesion promoter, solvent and auxiliary agent, the fluorocarbon resin is one or more selected from polytetrafluoroethylene resin, polyvinylidene fluoride resin, polychlorotrifluoroethylene resin, vinyl ether resin and polyvinyl fluoride resin, the adhesion promoter is one or more selected from tetraethyl titanate and n-butyl titanate and is 0 to 2% by mass, the solvent is water and is 60 to 85% by mass, and the auxiliary agent is one or more selected from dibutyl phthalate, dimethyl phthalate, polyethylene wax and dimethyl silicone oil and is 2 to 5% by mass.
4. The inkless thermal printing paper as claimed in claim 1, further comprising an intermediate spacer layer which is a mixture of a resin and a filler.
5. The preparation method of the inkless thermal printing paper is characterized by comprising the following steps:
s1, preparing a pre-coating solution, coating the pre-coating solution on a paper base layer by using a 3# wire bar, and putting the paper base layer into an oven, wherein the temperature range of the oven is 100-120 ℃, and the time is 2-5 min;
s2, preparing an inkless coating solution, coating the inkless coating solution on the precoating layer by using a 3# wire rod, and putting the precoating layer into an oven, wherein the temperature range of the oven is 50-80 ℃, and the time is 2-5 min (the time and the temperature can be adjusted by 10-20% from side to side);
s3, preparing a protective layer solution, coating the protective layer solution on the inkless coating by using a 3# wire bar, and putting the inkless coating into an oven, wherein the temperature range of the oven is 50-80 ℃, and the time is 2-5 min.
6. The method of claim 5, wherein the thickness of each of the precoat, the inkless coating and the protective layer is in the range of 1 to 20 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011253278.1A CN114457617A (en) | 2020-11-11 | 2020-11-11 | Inkless thermal printing paper and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011253278.1A CN114457617A (en) | 2020-11-11 | 2020-11-11 | Inkless thermal printing paper and preparation method thereof |
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| CN114457617A true CN114457617A (en) | 2022-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011253278.1A Pending CN114457617A (en) | 2020-11-11 | 2020-11-11 | Inkless thermal printing paper and preparation method thereof |
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|---|---|---|---|---|
| JP2006076112A (en) * | 2004-09-09 | 2006-03-23 | Ricoh Co Ltd | Thermosensitive recording material |
| CN101247962A (en) * | 2005-08-25 | 2008-08-20 | 王子制纸株式会社 | Thermosensitive recording material and process for production thereof |
| CN109423916A (en) * | 2017-08-21 | 2019-03-05 | 金华盛纸业（苏州工业园区）有限公司 | A kind of heat-sensitive paper and preparation method thereof |
| CN211199912U (en) * | 2019-08-28 | 2020-08-07 | 曲阜市玉樵夫科技有限公司 | Thermal printing paper |
-
2020
- 2020-11-11 CN CN202011253278.1A patent/CN114457617A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006076112A (en) * | 2004-09-09 | 2006-03-23 | Ricoh Co Ltd | Thermosensitive recording material |
| CN101247962A (en) * | 2005-08-25 | 2008-08-20 | 王子制纸株式会社 | Thermosensitive recording material and process for production thereof |
| CN109423916A (en) * | 2017-08-21 | 2019-03-05 | 金华盛纸业（苏州工业园区）有限公司 | A kind of heat-sensitive paper and preparation method thereof |
| CN211199912U (en) * | 2019-08-28 | 2020-08-07 | 曲阜市玉樵夫科技有限公司 | Thermal printing paper |
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