CN107366184A - A kind of temperature-sensitive paper top coat, temperature-sensitive paper coating and temperature-sensitive paper - Google Patents
A kind of temperature-sensitive paper top coat, temperature-sensitive paper coating and temperature-sensitive paper Download PDFInfo
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- CN107366184A CN107366184A CN201710424246.5A CN201710424246A CN107366184A CN 107366184 A CN107366184 A CN 107366184A CN 201710424246 A CN201710424246 A CN 201710424246A CN 107366184 A CN107366184 A CN 107366184A
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- mixed liquor
- temperature
- coating
- mass parts
- sensitive paper
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- 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
- D21H19/64—Inorganic compounds
-
- 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
- D21H27/18—Paper- or board-based structures for surface covering
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Heat Sensitive Colour Forming Recording (AREA)
Abstract
The invention discloses a kind of temperature-sensitive paper top coat, temperature-sensitive paper coating and temperature-sensitive paper, the temperature-sensitive paper top coat includes the first filler, and first filler includes the precipitated calcium carbonate that oil factor is more than or equal to threshold value.By the above-mentioned means, the situation that the printhead of thermal printer is accumulated when embodiment provided by the present invention can mitigate the change of temperature-sensitive paper printing environment.
Description
Technical field
The present invention relates to pulp technology for making paper, more particularly to a kind of temperature-sensitive paper top coat, temperature-sensitive paper coating
And temperature-sensitive paper.
Background technology
In recent years, the use range of temperature-sensitive paper is more and more extensive, and the demand used also rises year by year.It is normal from general life
The food labelling of different application and metering label, even communications and transportation in the cash register bill list seen, freight logistics label, supermarket
Bill, the lottery paper etc. of high-end applications, increasing place can see the use of temperature-sensitive paper.
Need to utilize the thermal printer supporting with it when temperature-sensitive paper prints, the operation principle of thermal printer is：Heat
Heating element heater is installed on the printhead of quick printer, when heating element heater is by that can produce high temperature quickly during certain electric current, heat
When the finishing coat of quick paper runs into heating element heater, temperature raises in a short time, leuco dye and developer hair in finishing coat
Biochemical reaction, and then show color.
The present inventor has found during long-term R ＆ D, when temperature-sensitive paper printing environment (such as temperature, print length
Deng) change when, chemical substance (such as leuco dye, developer etc.) meeting of some melted by heating in temperature-sensitive paper finishing coat
Accumulated in the printhead of thermal printer, printhead can also be caused to damage when serious, reduce the service life of thermal printer.
The content of the invention
The present invention solves the technical problem of provide a kind of temperature-sensitive paper top coat, temperature-sensitive paper coating and heat
Quick paper, the situation of the printhead accumulation of thermal printer when can mitigate the change of temperature-sensitive paper printing environment.
In order to solve the above technical problems, one aspect of the present invention is：A kind of temperature-sensitive paper finishing coat is provided
Coating, the top coat include the first filler, and first filler includes the lightweight carbonic acid that oil factor is more than or equal to threshold value
Calcium.
In order to solve the above technical problems, another technical solution used in the present invention is：A kind of temperature-sensitive paper coating is provided,
The temperature-sensitive paper coating includes the top coat described in bottom coating and any of the above-described embodiment.
In order to solve the above technical problems, another technical solution used in the present invention is：A kind of temperature-sensitive paper is provided, it is described
Temperature-sensitive paper includes body paper, formed in the priming coat on the body paper surface and formation in the finishing coat of the base coating surface, institute
It is the primary coat coating fluid being mixed to form using the bottom coating described in any of the above-described embodiment and the 4th solvent to state priming coat
Coating is formed, wherein, the quality of the bottom coating accounts for the 25%-35% of the primary coat coating fluid gross mass；The face applies
Layer applies coating solution with the face that the 5th solvent is mixed to form by the top coat described in any of the above-described embodiment and formed, its
In, the quality of the top coat accounts for the 15%-35% that the face applies coating fluid gross mass.
The beneficial effects of the invention are as follows：It is different from the situation of prior art, temperature-sensitive paper finishing coat provided by the present invention
Coating includes the precipitated calcium carbonate that oil factor is more than or equal to threshold value, and temperature-sensitive paper is in printing, some chemistry in its finishing coat
Material, such as the meeting melted by heating such as leuco dye, developer, the precipitated calcium carbonate of high oil absorption value can increase temperature-sensitive paper to molten
The printhead accumulation situation of thermal printer when melting the absorbability of material, and then mitigating printing environment change, so as to reduce air exercise
Damage caused by printing head, improve the service life of thermal printer.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, make required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.Wherein：
Fig. 1 is the structural representation of the embodiment of temperature-sensitive paper one of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Based on this
Embodiment in invention, those of ordinary skill in the art are obtained every other under the premise of performing creative labour is not made
Embodiment, belong to the scope of protection of the invention.
Referring to Fig. 1, Fig. 1 is the structural representation of the embodiment of temperature-sensitive paper one of the present invention, temperature-sensitive paper includes body paper
10th, formed the surface of body paper 10 priming coat 12 and formed the surface of priming coat 12 finishing coat 14；Wherein, finishing coat 14 is by right
The temperature-sensitive paper top coat answered is formed, and priming coat 12 is formed by corresponding temperature-sensitive paper bottom coating.
During to mitigate printing environment change, the printhead accumulation situation of thermal printer, heat-sensitive paper provided by the present invention
Opening the embodiment of top coat one includes：First filler, wherein, the first filler includes the lightweight that oil factor is more than or equal to threshold value
Calcium carbonate；In the present embodiment, precipitated calcium carbonate is used for the painting story frame structure for providing loose, high hole and high-absorbable.
When being printed using thermal printer to temperature-sensitive paper, some chemical substances in temperature-sensitive paper finishing coat (such as it is colourless
Dyestuff, developer etc.) melted by heating, now the precipitated calcium carbonate of high oil absorption value can increase temperature-sensitive paper finishing coat to fused mass
The absorbability of matter, and then mitigate the situation that melt substance is accumulated in printhead in print procedure, printhead is caused so as to reduce
Damage, improve the service life of thermal printer.In an application scenarios, when using castor oil titration measuring lightweight carbon
During the oil factor of sour calcium, the threshold value in above-described embodiment is 80g/100g, the oil factor of precipitated calcium carbonate can be 80g/100g,
85g/100g, 90g/100g etc.；When using other method measure oil factor, during for example with linseed oil titration measuring, no
There is certain influence on the measurement result of oil factor with reagent, its threshold value can be set according to the oil absorbency for reaching predetermined extent
It is fixed；In addition, the temperature-sensitive paper (for example, as cash register bill list, lottery ticket etc.) of different purposes is caused by during thermal printing
The species of melt substance may be different, therefore precipitated calcium carbonate may differ to the degree of absorption of different types of melt substance
Sample, the threshold value of above-mentioned oil factor can also be set according to the temperature-sensitive paper of practical use.
In the another embodiment of temperature-sensitive paper top coat provided by the present invention, except oil factor in above-described embodiment
Outside the precipitated calcium carbonate of threshold value, the first filler also includes in natural kaolin, calcined kaolin, silica
It is at least one.To reach the purpose for mitigating printhead accumulation, above-mentioned oil factor is more than or equal to the precipitated calcium carbonate of threshold value first
Mass fraction in filler is more than or equal to 50%, such as 50%, 80%, 90% etc..
In a further embodiment of temperature-sensitive paper top coat provided by the present invention, temperature-sensitive paper top coat bag
The first filler and the first adhesive in any of the above-described embodiment are included, wherein, the first adhesive includes biological latex and poly- second
At least one of enol.Show through test of many times, above-mentioned first adhesive can also mitigate printhead heap to a certain extent
Long-pending situation.In an application scenarios, biological latex be one kind using starch as main material, add a small amount of chemical additive modification and
Into a kind of starch-base adhesive, contain multiple hydroxyls in its strand；Polyvinyl alcohol (PVA) is solved by polyvinyl acetate alcohol
Arrive, multiple hydroxyls are also included in its strand；Be probably due to the presence of hydroxyl in biological latex or polyvinyl alcohol molecule chain,
Add the chemical substances such as leuco dye in top coat, developer sticks tension force, sticks that tension force is higher, and rate of dispersion is got over
It hurry up, therefore, during thermal printing, above-mentioned first adhesive can increase the chemical substance of melted by heating in temperature-sensitive paper table
The rate of dispersion in face, so as to mitigate the situation of printhead accumulation to a certain extent.
In temperature-sensitive paper top coat provided by the present invention in a further embodiment, except in any of the above-described embodiment
Outside the first adhesive in first filler, any of the above-described embodiment, temperature-sensitive paper top coat also includes the first mixed liquor, the
Two mixed liquors, the 3rd mixed liquor and lubricant；Wherein, the first filler is 20-55 mass parts, such as 20,40,55 mass parts；
First adhesive is 5-18 mass parts, such as 5,12,18 mass parts；First mixed liquor is 12-35 mass parts, such as 12,25,35
Mass parts；Second mixed liquor is 12-35 mass parts, such as 12,25,35 mass parts etc.；3rd mixed liquor is 5-25 mass parts, example
Such as 5,15,25 mass parts；Lubricant is 5-15 mass parts, such as 5,10,15 mass parts etc.；Wherein, the first filler, the first glue
Glutinous agent, the first mixed liquor, the second mixed liquor, the 3rd mixed liquor, the gross mass of lubricant are 100 mass parts.
Specifically, in above-described embodiment, lubricant includes at least one of zinc stearate, aluminum stearate, paraffin.
Specifically, in above-described embodiment, the first mixed liquor include 36-42 mass parts (such as 36 mass parts, 40 mass parts,
42 mass parts etc.) developer, 3.5-5 mass parts (such as 3.5 mass parts, 4 mass parts, 5 mass parts etc.) polyvinyl alcohol with
And first solvent, in one embodiment, the first solvent can be water, and in other embodiments, the first solvent is alternatively other.
In the present embodiment, the quality sum of developer and polyvinyl alcohol accounts for the 38%-45% of above-mentioned first mixed liquor gross mass, such as
38%th, 42%, 45% etc.；In an application scenarios, above-mentioned developer includes 2,4- dihydroxydiphenylsulisomers, the allyls of 3,3'- bis-
At least one of base -4,4'- sulphonyl phenol, 2,4- diphenyl sulfones phenol, 4,4 '-dihydroxydiphenylsulisomer.
Specifically, in above-described embodiment, the second mixed liquor include 36-42 mass parts (such as 36 mass parts, 40 mass parts,
42 mass parts etc.) sensitizer, 3.5-5 mass parts (such as 3.5 mass parts, 4 mass parts, 5 mass parts etc.) polyvinyl alcohol with
And second solvent, in one embodiment, the second solvent can be water, and in other embodiments, the second solvent is alternatively other.
The quality sum of sensitizer and polyvinyl alcohol accounts for the 38%-45% of the second mixed liquor gross mass in the present embodiment, such as 38%,
42%th, 45% etc.；In an application scenarios, sensitizer include 1,2- biphenoxyl ethanes, 1,2-, bis- toloxyl ethane,
At least one of diphenyl sulphone (DPS), stearic amide.
Specifically, in above-described embodiment, the 3rd mixed liquor include 36-42 mass parts (such as 36 mass parts, 40 mass parts,
42 mass parts etc.) leuco dye, the polyvinyl alcohol of 3.5-5 mass parts (such as 3.5 mass parts, 4 mass parts, 5 mass parts etc.)
And the 3rd solvent, in one embodiment, the 3rd solvent can be water, and in other embodiments, the 3rd solvent is alternatively it
He.In the present embodiment, the quality sum of leuco dye and polyvinyl alcohol accounts for the 38%-45% of the 3rd mixed liquor gross mass, example
Such as 38%, 42%, 45%；In an application scenarios, leuco dye includes 2- phenylamino -6- dibutylamino -3- methyl-glimmering
At least one of alkane, 2- (2-4- dimethylbenzene amido) -3- methyl -6- lignocaine fluoranes.
It is to be applied to heat-sensitive paper in the form of precursor because above-mentioned developer, sensitizer, inorganic dyestuff are not soluble in water
Open in finishing coat；General commercially available developer, sensitizer, inorganic dyestuff precursor between can produce it is different degrees of poly-
Collection, therefore, using preceding needing to use appropriate ways, such as mechanical shearing, grinding or impact etc., it is broken into aggregation and conforms to
The precursor asked；In an application scenarios, such as the first mixed liquor or the second mixing can be ground in controlling wet-type finishing machine
Liquid or the 3rd mixed liquor, to cause solid particle (developer or increasing in the first mixed liquor or the second mixed liquor or the 3rd mixed liquor
Sense agent or inorganic dyestuff) particle diameter be 0.5-1.5um, such as 0.5um, 1.0um, 1.5um.In above-mentioned process of lapping, first
Surfactant of the polyvinyl alcohol as system in mixed liquor or the second mixed liquor or the 3rd mixed liquor, be adsorbed in developer or
The surface of sensitizer or inorganic dyestuff solid particle and make its reduction in surface tension, prevent particle aggregation.
During to mitigate printing environment change, the printhead accumulation situation of thermal printer, present invention also offers heat-sensitive paper
Coating is opened, the temperature-sensitive paper coating includes the temperature-sensitive paper top coat and bottom coating in any of the above-described embodiment.
Wherein, bottom coating can improve the texture of temperature-sensitive paper, and have certain effect of heat insulation, in follow-up print procedure,
The heat energy that printhead can be provided is as much as possible to rest on finishing coat, the effect of so as to improve finishing coat.In a reality
To apply in example, bottom coating includes the second filler and the second adhesive, wherein, the second filler includes precipitated calcium carbonate, calcining height
At least one of ridge soil, plastic pigments, silica；Second adhesive includes at least one in biological latex, polyvinyl alcohol
Kind.In the present embodiment, whether the oil factor of precipitated calcium carbonate is higher than threshold value and is not limited in bottom coating.Should at one
With in scene, the gross mass of above-mentioned second filler and the second adhesive is 100 mass parts, and above-mentioned second filler is 75-90 mass
Part, such as 75,82,90 mass parts；Second adhesive is 10-25 mass parts, such as 10,18,25 mass parts etc..
Please continue to refer to Fig. 1, Fig. 1 is the structural representation of the embodiment of temperature-sensitive paper one of the present invention.It is specific at one
In application scenarios, priming coat 12 is the primary coat coating fluid that bottom coating and the 4th solvent are mixed to form in any of the above-described embodiment
On the surface of body paper 10, coating is formed after drying, wherein, the quality of bottom coating accounts for the 25%- of primary coat coating fluid gross mass
35%, such as 25%, 30%, 35% etc., the coating weight of primary coat coating fluid is 6-12g/m2, such as 6,8,12g/m2Deng；Finishing coat
14 faces being mixed to form by the top coat in any of the above-described embodiment and the 5th solvent apply coating solution in priming coat 12
Surface coating is formed after drying, wherein, the quality of top coat accounts for the 15%-35% that face applies coating fluid gross mass, such as
15%th, 25%, 35% etc., the coating weight that face applies coating fluid is 4-8g/m2, such as 4,6,8g/m2Deng.In one embodiment, on
It is water to state the 4th solvent or the 5th solvent, in other embodiments, or other.In addition, during actually selling, it is above-mentioned
Primary coat coating fluid can also be sold directly as bottom coating, and above-mentioned face applies coating fluid and can also sold directly as top coat
Sell.
Below will the invention will be further described by 3 groups of specific experiments.For convenience of description, made below in 3 groups of experiments
All feed materials are calculated with g during standby temperature-sensitive paper coating, in other embodiments can be according to actual conditions according to mass parts ratio
Example zooms in or out.It is to be based on identical measuring condition and evaluation criterion when measuring the printing effect of temperature-sensitive paper.
Embodiment 1：
Initial body paper is provided A,；
B, temperature-sensitive paper primary coat coating fluid is prepared：It is 2 by mass ratio under the conditions of high-speed stirred:2:1 lightweight carbonic acid
Mixture 82g, polyvinyl alcohol 18g, 257g water of calcium, plastic pigments and silica are well mixed, and are applied so as to obtain priming coat
The quality of material accounts for the primary coat coating fluid that priming coat coating fluid gross mass is 28%；
C, using coating machine, on body paper surface with 7.2g/m2Coating weight coating primary coat coating fluid, dry after form primary coat
Layer；
D, prepare temperature-sensitive paper face and apply coating fluid：(1) the first mixed liquor is prepared：By 2,4 diphenyl sulfone phenol 40g, poly- second
Enol 4.5g, water 67g are hybridly prepared into the first mixed liquor that mass fraction is 40%, and the is then ground in controlling wet-type finishing machine
Solid grain size is 1.2um in one mixed liquor；(2) the second mixed liquor is prepared：1,2- biphenoxyl ethanes 40g, polyvinyl alcohol
4.5g, water 67g are hybridly prepared into the second mixed liquor that mass fraction is 40%, and it is mixed that second is then ground in controlling wet-type finishing machine
It is 1um to close solid grain size in liquid；(3) 2- phenylamino -6- dibutylaminos -3- methyl-fluorane 40g, polyvinyl alcohol are prepared
4.5g, water 67g are hybridly prepared into the 3rd mixed liquor that mass fraction is 40%, and it is mixed that the 3rd is then ground in controlling wet-type finishing machine
Close liquid in solid grain size be 0.8um (4) under the conditions of high-speed stirred, will use castor oil titration survey oil suction degree for
88g/100g precipitated calcium carbonate 32g, polyvinyl alcohol 8g, the first mixed liquor 23g, the second mixed liquor 22g, the 3rd mixed liquor 10g,
Zinc stearate 5g, water 233g are well mixed, and priming coat coating fluid gross mass is accounted for as 30% so as to obtain the quality of top coat
Face apply coating fluid；
E, using coating machine, in base coating surface with 4.5g/m2Coating weight coated face apply coating fluid, dry after forming face
Coating.
Embodiment 2：
Initial body paper is provided A,；
B, temperature-sensitive paper primary coat coating fluid is prepared：It is 1 by mass ratio under the conditions of high-speed stirred:1 calcined kaolin and
Mixture 90g, polyvinyl alcohol 10g, 213g water of plastic pigments are well mixed, and primary coat is accounted for so as to obtain the quality of bottom coating
The primary coat coating fluid that layer coating fluid gross mass is 32%；
C, using coating machine, on body paper surface with 8.0g/m2Coating weight coating primary coat coating fluid, dry after form primary coat
Layer；
D, prepare temperature-sensitive paper face and apply coating fluid：(1) the first mixed liquor is prepared：By 4,4 diphenyl sulfone phenol 36g, poly- second
Enol 3.5g, water 55g are hybridly prepared into the first mixed liquor that mass fraction is 42%, and the is then ground in controlling wet-type finishing machine
Solid grain size is 1.0um in one mixed liquor；(2) the second mixed liquor is prepared：Diphenyl sulphone (DPS) 36g, polyvinyl alcohol 3.5g, water 55g
The second mixed liquor that mass fraction is 42% is hybridly prepared into, solid in the second mixed liquor is then ground in controlling wet-type finishing machine
Grain diameter is 0.8um；(3) 2- phenylamino -6- dibutylaminos -3- methyl-fluorane 36g, polyvinyl alcohol 3.5g, water 55g are prepared
The 3rd mixed liquor that mass fraction is 42% is hybridly prepared into, solid in the 3rd mixed liquor is then ground in controlling wet-type finishing machine
Grain diameter be 1.0um (4) under the conditions of high-speed stirred, by mass ratio be 4:The 1 oil suction degree surveyed using castor oil titration
The mixture 30g of precipitated calcium carbonate and silica for 82g/100g, polyvinyl alcohol 9g, the first mixed liquor 20g, the second mixing
Liquid 24g, the 3rd mixed liquor 11g, aluminum stearate 6g, water 213g are well mixed, and primary coat is accounted for so as to obtain the quality of top coat
The face that layer coating fluid gross mass is 32% applies coating fluid；
E, using coating machine, in base coating surface with 4.0g/m2Coating weight coated face apply coating fluid, dry after forming face
Coating.
Comparative example：
Initial body paper is provided A,；
B, temperature-sensitive paper primary coat coating fluid is prepared：Under the conditions of high-speed stirred, by calcined kaolin 82g, styrene-acrylonitrile copolymer
Sour (SA) latex 18g, 186g water is well mixed, and accounting for priming coat coating fluid gross mass so as to obtaining the quality of bottom coating is
35% primary coat coating fluid；
C, using coating machine, on body paper surface with 7.0g/m2Coating weight coating primary coat coating fluid, dry after form primary coat
Layer；
D, prepare temperature-sensitive paper face and apply coating fluid：(1) the first mixed liquor is prepared：By 4,4 diphenyl sulfone phenol 42g, poly- second
Enol 4g, water 64g are hybridly prepared into the first mixed liquor that mass fraction is 42%, and first is then ground in controlling wet-type finishing machine
Solid grain size is 1.2um in mixed liquor；(2) the second mixed liquor is prepared：Diphenyl sulphone (DPS) 42g, polyvinyl alcohol 4g, water 64g mixing
The second mixed liquor that mass fraction is 42% is configured to, solid particle in the second mixed liquor is then ground in controlling wet-type finishing machine
Particle diameter is 1um；(3) 2- phenylamino -6- dibutylaminos -3- methyl-fluorane 42g, polyvinyl alcohol 4g, water 64g mixed preparings are prepared
Into the 3rd mixed liquor that mass fraction is 42%, solid grain size in the 3rd mixed liquor is then ground in controlling wet-type finishing machine
It is 1.2um (4) under the conditions of high-speed stirred, natural kaolin of the oil suction degree that castor oil titration is surveyed for 45g/100g will be used
30g, butylbenzene (SB) latex 8g, the first mixed liquor 20g, the second mixed liquor 25g, the 3rd mixed liquor 11g, paraffin 6g, water 186g are mixed
Close uniformly, the face painting coating fluid that priming coat coating fluid gross mass is 35% is accounted for so as to obtain the quality of top coat；
E, using coating machine, in base coating surface with 5.0g/m2Coating weight coated face apply coating fluid, dry after forming face
Coating.
The raw material proportioning and the performance test results of above-mentioned 3 groups each temperature-sensitive paper coating specifically tested are as shown in table 1 below.
The raw material proportioning and the performance test results for each temperature-sensitive paper coating that 13 groups of table is specifically tested
Above-described embodiment 1, embodiment 2 and comparative example are prepared into the temperature-sensitive paper of gained in 25 DEG C of normal temperature, 0 DEG C of low temperature and height
The continuous printing of different distance is carried out under warm 40 DEG C of environment, the printing effect and printing head for contrasting temperature-sensitive paper accumulate situation.
Test result shows：At 25 DEG C of normal temperature, when continuous 80 meters of short distance prints, embodiment 1, embodiment 2 and comparative example test knot
Fruit is substantially suitable, and temperature-sensitive paper figure message printing is clear, and printhead is without accumulation situation；And in 25 DEG C of normal temperature or 0 DEG C of low temperature or high temperature
At 40 DEG C, when continuous 4000 meters of long range prints, embodiment 1, the temperature-sensitive paper figure message printing of embodiment 2 are clear, and printhead does not have
Situation is significantly built up, and there is the unsharp situation of subregion figure message printing in comparative example, printhead substantially has accumulation situation.Cause
This, test result shows that the precipitated calcium carbonate that oil factor is high in top coat can mitigate the situation of printhead accumulation.
Sum it up, being different from the situation of prior art, temperature-sensitive paper top coat provided by the present invention includes
Oil factor is more than or equal to the precipitated calcium carbonate of threshold value, and temperature-sensitive paper is in printing, some chemical substances in its finishing coat, such as nothing
The meeting melted by heating such as color dyestuff, developer, the precipitated calcium carbonate of high oil absorption value can increase suction of the temperature-sensitive paper to melt substance
The property received, and then mitigate the printhead accumulation situation of thermal printer when printing environment changes, so as to reduce to caused by printhead
Damage, improve the service life of thermal printer.
Embodiments of the present invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this
The equivalent structure or equivalent flow conversion that description of the invention and accompanying drawing content are made, or directly or indirectly it is used in other correlations
Technical field, it is included within the scope of the present invention.
Claims (12)
- A kind of 1. temperature-sensitive paper top coat, it is characterised in thatThe top coat includes the first filler, and first filler includes the lightweight carbonic acid that oil factor is more than or equal to threshold value Calcium.
- 2. top coat according to claim 1, it is characterised in that according to castor oil titration, the threshold value is 80g/100g。
- 3. top coat according to claim 1, it is characterised in thatFirst filler also includes at least one of natural kaolin, calcined kaolin, silica；Wherein, it is described light Mass fraction of the matter calcium carbonate in first filler is more than or equal to 50%.
- 4. top coat according to claim 1, it is characterised in that the top coat also includes：First adhesive, first adhesive include at least one of biological latex and polyvinyl alcohol.
- 5. top coat according to claim 4, it is characterised in that the top coat further comprises：First Mixed liquor, the second mixed liquor, the 3rd mixed liquor and lubricant；First mixed liquor includes developer, the polyvinyl alcohol and the first solvent of 3.5-5 mass parts of 36-42 mass parts, Wherein, the quality sum of the developer and the polyvinyl alcohol accounts for the 38%-45% of the first mixed liquor gross mass, described The particle diameter of solid particle in first mixed liquor is 0.5-1.5um；Second mixed liquor includes sensitizer, the polyvinyl alcohol and the second solvent of 3.5-5 mass parts of 36-42 mass parts, Wherein, the quality sum of the sensitizer and the polyvinyl alcohol accounts for the 38%-45% of the second mixed liquor gross mass, described The particle diameter of solid particle in second mixed liquor is 0.5-1.5um；It is molten that 3rd mixed liquor includes the leuco dye of 36-42 mass parts, the polyvinyl alcohol of 3.5-5 mass parts and the 3rd Agent, wherein, the quality sum of the leuco dye and the polyvinyl alcohol accounts for the 38%- of the 3rd mixed liquor gross mass 45%, the particle diameter of the solid particle in the 3rd mixed liquor is 0.5-1.5um.
- 6. top coat according to claim 5, it is characterised in thatFirst filler is 20-55 mass parts, and first adhesive is 5-18 mass parts, and first mixed liquor is 12- 35 mass parts, second mixed liquor are 12-35 mass parts, and the 3rd mixed liquor is 5-25 mass parts, and the lubricant is 5-15 mass parts；Wherein, first filler, first adhesive, first mixed liquor, second mixed liquor, institute State the 3rd mixed liquor, the gross mass of the lubricant is 100 mass parts.
- 7. top coat according to claim 5, it is characterised in thatThe developer includes 2,4- dihydroxydiphenylsulisomers, 3,3'- diallyl -4,4'- sulphonyl phenol, 2,4- diphenyl sulfone benzene At least one of phenol, 4,4 '-dihydroxydiphenylsulisomer；The sensitizer is included in 1,2- biphenoxyl ethanes, 1,2- bis- toloxyl ethane, diphenyl sulphone (DPS), stearic amides It is at least one；The leuco dye includes 2- phenylamino -6- dibutylaminos -3- methyl-fluorane, 2- (2-4- dimethylbenzene amido) -3- first At least one of base -6- lignocaine fluoranes；The lubricant includes at least one of zinc stearate, aluminum stearate, paraffin.
- 8. a kind of temperature-sensitive paper coating, it is characterised in that applied including the face described in bottom coating and claim any one of 1-7 Coating.
- 9. temperature-sensitive paper coating according to claim 8, it is characterised in that the bottom coating includes：Second filler, second filler are included in precipitated calcium carbonate, calcined kaolin, plastic pigments, silica at least It is a kind ofSecond adhesive, including at least one of biological latex, polyvinyl alcohol.
- 10. temperature-sensitive paper coating according to claim 9, it is characterised in thatSecond filler is 75-90 mass parts, second adhesive is 10-25 mass parts, wherein, second filler and The gross mass of second adhesive is 100 mass parts.
- 11. a kind of temperature-sensitive paper, the temperature-sensitive paper includes body paper, formed in the priming coat on the body paper surface and formation in institute State the finishing coat of base coating surface, it is characterised in thatThe priming coat is the bottom being mixed to form using the bottom coating described in claim any one of 9-10 and the 4th solvent Coating solution is applied to be formed, wherein, the quality of the bottom coating accounts for the 25%-35% of the primary coat coating fluid gross mass；The face that the finishing coat is mixed to form as the top coat described in claim any one of 1-7 and the 5th solvent applies coating Liquid is coated with to be formed, wherein, the quality of the top coat accounts for the 15%-35% that the face applies coating fluid gross mass.
- 12. temperature-sensitive paper according to claim 11, it is characterised in that the coating weight of the primary coat coating fluid is 6-12g/ m2, the coating weight that the face applies coating fluid is 4-8g/m2。
Priority Applications (1)
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|---|---|---|---|
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| CN112982025A (en) * | 2019-12-12 | 2021-06-18 | 金华盛纸业（苏州工业园区）有限公司 | Paper protective layer and paper |
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