CN103774491A - Coated paper - Google Patents
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- CN103774491A CN103774491A CN201210413949.5A CN201210413949A CN103774491A CN 103774491 A CN103774491 A CN 103774491A CN 201210413949 A CN201210413949 A CN 201210413949A CN 103774491 A CN103774491 A CN 103774491A
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Abstract
The invention provides coated paper. The coated paper comprises a body paper, a sizing layer forming the surface of the body paper, and at least one coated layer forming the surface of the sizing layer; at least one of the body paper, the sizing layer and the coated layer of the coated paper contains calcined kaolin, wherein the calcined kaolin with the particle size smaller than and equal to 2 microns is 70-95% of the total mass of the calcined kaolin, and the ISO whiteness is greater than and equal to 85%; the calcined kaolin in the body paper is added in such a way that one part of papermaking filler is replaced as the papermaking filler; the calcined kaolin is added in the sizing layer in such a way that calcined kaolin is added in gelatinized solution; the calcined kaolin is added in the coated layer in such a way that part of coating pigment is replaced as the coating pigment. Through the application of the high-temperature resistance and excellent barrier property of the calcined kaolin, phenomena such as low temperature resistance and rotary printing bubbling in ordinary paper for rotary printing are improved greatly.
Description
Technical field
The present invention relates to a kind of coated paper.
Background technology
Business rotary press has the fast characteristic of print speed printing speed, per hourly prints 35000 ~ 110000, is 6 ~ 20 times of common offset machine.Mode of printing so fast, certainly will require the printing can rapid draing.When paper passes through the baking oven of rotary press, paper surface temperature reaches 120 ~ 200 ℃ of left and right, and the moisture content of paper inside is expanded by heating under this high-temperature baking, shows as paper bubbling phenomenon, and this has had a strong impact on the efficiency of rotary printing.
For the paper temperature tolerance of rotary printing, conventionally more than 180 ℃, and common coated paper heatproof is generally at 150 ~ 160 ℃.In order to meet the heatproof requirement of rotary printing paper, mainly promote paper temperature tolerance by improving the methods such as body paper fiber consumption, employing high porosity pigment, control moisture content in the industry at present, said method has not only increased paper production cost but also has reduced the utilization rate of timber, neither energy-conservation also not environmental protection.
Summary of the invention
In view of this, be necessary to provide a kind of coated paper, bubble problem when its temperature tolerance well can be avoided rotary printing.
A kind of coated paper, at least one coating layer that it comprises body paper, forms the glue application layer on body paper surface and form glue application layer surface, in the body paper of this coated paper, glue application layer, at least one coating layer, have at least one to contain calcined kaolin, what wherein this calcined kaolin particle diameter was less than or equal to 2 μ m accounts for 70% ~ 95% of calcined kaolin gross mass, and ISO whiteness is more than or equal to 85%; The addition manner of this calcined kaolin in body paper adds as papermaking filler for replacing part papermaking filler, and wherein the addition of calcined kaolin is 10% ~ 40% of over dry stock quality; The addition manner of this calcined kaolin in glue application layer is for add calcined kaolin in table glue, and the addition of calcined kaolin is 20% ~ 70% of table glue quality; The addition manner of this calcined kaolin in coating layer adds as coating pigment for part replaces coating pigment, and its addition is 10% ~ 90% of coating pigment quality.
The present invention utilizes the high temperature resistant and outstanding barrier property of calcined kaolin, greatly improved common rotary printing paper temperature tolerance deficiency, the phenomenons such as rotary printing foaming make full use of the pigment crystalline form of calcined kaolin simultaneously, improve face coat covering performance, improved the planarization of paper.Maintaining under identical rotary printing condition, greatly reduce production cost, high speed business rotary printing industry has been brought to far-reaching influence.
The specific embodiment
Coated paper of the present invention is for rotary printing, and it comprises body paper, forms the glue application layer on body paper surface and at least one coating layer on formation glue application layer surface.
The slurry that the preparation of this body paper adopts is one or more the combination in sulfate bleach chemical pulp, Alkaline Peroxide Mechanical Pulp or pulp from decoloured waste paper, and wherein in slurry, the mass ratio of sulfate bleach chemical pulp, Alkaline Peroxide Mechanical Pulp, pulp from decoloured waste paper is (60 ~ 100): (0 ~ 30): (0 ~ 10).Slurry makes body paper through conventional paper technology step, this conventional paper technology step specifically comprise successively making beating, with slurry, in add, upper net forming, squeezing drying and other steps, add material that step adds in wherein and include papermaking filler and various other chemical agent.Process each slurry kind through making beating and reach conventional beating degree, be specially: 30 ~ 45 ° of S R of sulfate bleach chemical pulp; 20 ~ 30 ° of S R of Alkaline Peroxide Mechanical Pulp; 40 ~ 50 ° of SR of pulp from decoloured waste paper.
In the body paper of this coated paper, glue application layer, coating layer, have at least one to contain a certain amount of calcined kaolin.
The performance of calcined kaolin, be worth far away higher than common kaolin, greatly widened kaolinic range of application.The main purpose that kaolin is calcined is: (1) sloughs organic carbon and other impure minerals to improve whiteness; (2) slough kaolin contained humidity, hydroxyl to improve voidage and the chemical reactivity of calcination product, improve physical and chemical performance, meet various application demands.Kaolin through calcination process has removed structure or the crystallization water, carbonaceous and other volatile materials thereof, has become hard kaolinite, trade name " calcined kaolin ".Calcined kaolin has that whiteness is high, unit weight is little, specific area and pore volume large, oil absorption, covering and ABRASION RESISTANCE are good, the characteristics such as insulating properties and heat endurance height.
Calcined kaolin of the present invention has certain effect of heat insulation.This calcined kaolin is characterized as particle diameter≤2 μ m and accounts for 70% ~ 95% of quality, ISO whiteness >=85%, oil factor is 60 ~ 70g(castor oil)/100g(calcined kaolin), 325 screen residue≤0.008%, pH=6.0 ~ 8.0, moisture content≤1.5%.Wherein particle diameter and ISO whiteness are important to influential effect of the present invention.There is the calcined kaolin particle diameter narrow distribution of this particle diameter and ISO whiteness, specific area is large, there is good optical property and covering power, pigment structure is loosened and porous, be conducive to moisture content Quick diffusing in paper, thereby cause large ink-covered area printing foaming phenomenon because heat radiation is uneven while having avoided paper to dry.
The addition manner of this calcined kaolin in body paper is: replace the conventional papermaking filler [as powdered whiting (GCC), precipitated calcium carbonate (PCC)] of part and add as papermaking filler, wherein the addition of calcined kaolin is 10% ~ 40% of over dry stock quality.The interpolation quality of filler in paper making pulp is convention amount.
The addition manner of this calcined kaolin in glue application layer is: in conventional table glue, add calcined kaolin, its addition is 20% ~ 70% of table glue quality, and the solid content of the table glue being mixed with is 10% ~ 40%.
The addition manner of this calcined kaolin in coating layer is: part replaces conventional coating pigment (as GCC, PCC, Clay) and adds as coating pigment, its addition is 10% ~ 90% of coating pigment quality, and add conventional other coating additives etc., being mixed with coating solid content is 50% ~ 70%.
The coating that at least one coating layer on formation body paper surface uses contains coating pigment 100 parts by mass (comprising calcined kaolin), cationic starch 10 ~ 50 parts by mass, latex 0 ~ 20 parts by mass, fluorescent whitening agent 0 ~ 2 parts by mass, wet strength agent 0 ~ 0.5 parts by mass, other auxiliary agent 0 ~ 0.5 parts by mass and suitable quantity of water.Wherein above-mentioned each component is the formula of coating routine, in this patent, does not describe in detail.
The coating process parameter of coating is specially: total coating weight is 15 ~ 60g/m
2, 50 ~ 150 ℃ of calendering temperatures, line pressure 80 ~ 300KN, the speed of a motor vehicle 500 ~ 1500m/min.
This coated paper be quantitatively 50 ~ 150g/m
2, water content is 2.5 ~ 6.0%, whiteness>=88%, temperature tolerance>=180 ℃, paper smoothness is greater than 800s, through rotary printing without foaming phenomenon.
The present invention utilizes the high temperature resistant and outstanding barrier property of calcined kaolin, greatly improved common rotary printing paper temperature tolerance deficiency, the phenomenons such as rotary printing foaming make full use of the pigment crystalline form of calcined kaolin simultaneously, improve face coat covering performance, improved the planarization of paper.Maintaining under identical rotary printing condition, greatly reduce production cost, high speed business rotary printing industry has been brought to far-reaching influence.
Below by embodiment, the present invention is specifically described.
Embodiment 1
(1) the satisfactory sulfate bleach chemical pulp of beating degree (30 ~ 45 ° of SR), Alkaline Peroxide Mechanical Pulp (20 ~ 30 ° of SR), three kinds of slurries of pulp from decoloured waste paper (40 ~ 50 ° of SR) after pulling an oar are carried out with slurry according to the ratio of 60%:30%:10%, add the calcined kaolin of slurry over dry quality 10% to add as interior, add after other green end auxiliary agents, bodystock paper is manufactured paper with pulp in online.The characteristic of described calcined kaolin is that particle diameter≤2 μ m accounts for 70% ~ 95% of quality, whiteness >=85%.
(2) carry out surface-coated with this body paper, formulation for coating material is 90 parts, calcium carbonate, 10 parts of china clay, and 5 parts, latex, 12 parts of cationic starches, 0.5 part of fluorescent whitening agent, 0.5 part of wet strength agent, 0.5 part of other auxiliary agent, it is 65% that coating configuration contains admittedly; Total coating weight is that coating weight is 30g.
(3) gained coated paper is carried out to 130 ℃ of press polish ornamenting calendering temperatures, line pressure 190KN, speed of a motor vehicle 1100m/min.
After ornamenting moulding, Substance is 90g, becomes paper moisture content 4.5%, whiteness 91.68%, 185 ℃ of temperature tolerances, paper smoothness 957S.
The coated paper that embodiment 1 makes after rotary printing without bubble, illustrate that the temperature tolerance of coated paper is good, and printing and behavior in service good.
Embodiment 2
(1) the satisfactory sulfate bleach chemical pulp of beating degree (30 ~ 45 ° of SR), Alkaline Peroxide Mechanical Pulp (20 ~ 30 ° of SR), three kinds of slurries of pulp from decoloured waste paper (40 ~ 50 ° of SR) after pulling an oar are carried out with slurry according to the ratio of 60%:30%:10%, add the calcined kaolin of slurry over dry quality 20% to add as interior, add after other green end auxiliary agents, bodystock paper is manufactured paper with pulp in online.The characteristic of described calcined kaolin is that particle diameter≤2 μ m accounts for 70% ~ 95% of quality, whiteness >=85%.
(2) carry out surface-coated with this body paper, formulation for coating material is 90 parts, calcium carbonate, 10 parts of china clay, and 5 parts, latex, 12 parts of cationic starches, 0.5 part of fluorescent whitening agent, 0.5 part of wet strength agent, 0.5 part of other auxiliary agent, it is 65% that coating configuration contains admittedly; Total coating weight is that coating weight is 30g.
(3) gained coated paper is carried out to 135 ℃ of press polish ornamenting calendering temperatures, line pressure 190KN, speed of a motor vehicle 1050m/min.
After ornamenting moulding, Substance is 90g, becomes paper moisture content 4.5%, whiteness 90.23%, 190 ℃ of temperature tolerances, paper smoothness 1105S.
The coated paper that embodiment 2 makes after rotary printing without bubble, illustrate that the temperature tolerance of coated paper is good, and printing and behavior in service good.
Embodiment 3
(1) the satisfactory sulfate bleach chemical pulp of beating degree (30 ~ 45 ° of SR), Alkaline Peroxide Mechanical Pulp (20 ~ 30 ° of SR), three kinds of slurries of pulp from decoloured waste paper (40 ~ 50 ° of SR) after pulling an oar are carried out with slurry according to the ratio of 60%:30%:10%, add the calcined kaolin of slurry over dry quality 40% to add as interior, add after other green end auxiliary agents, bodystock paper is manufactured paper with pulp in online.The characteristic of described calcined kaolin is that particle diameter≤2 μ m accounts for 70% ~ 95% of quality, whiteness >=85%.
(2) carry out surface-coated with this body paper, formulation for coating material is 90 parts, calcium carbonate, 10 parts of china clay, and 5 parts, latex, 20 parts of cationic starches, 0.5 part of fluorescent whitening agent, 0.5 part of wet strength agent, 0.5 part of other auxiliary agent, it is 65% that coating configuration contains admittedly; Total coating weight is that coating weight is 30g.
(3) gained coated paper is carried out to 140 ℃ of press polish ornamenting calendering temperatures, line pressure 200KN, speed of a motor vehicle 1050m/min.
After ornamenting moulding, Substance is 90g, becomes paper moisture content 4.5%, whiteness 88.87%, 195 ℃ of temperature tolerances, paper smoothness 1000S.
The coated paper that embodiment 3 makes after rotary printing without bubble, illustrate that the temperature tolerance of coated paper is good, and printing and behavior in service good.
Embodiment 4
(1) the satisfactory sulfate bleach chemical pulp of beating degree (30 ~ 45 ° of SR), Alkaline Peroxide Mechanical Pulp (20 ~ 30 ° of SR), three kinds of slurries of pulp from decoloured waste paper (40 ~ 50 ° of SR) after pulling an oar are carried out with slurry according to the ratio of 65%:30%:5%, add 25% grinding calcium carbonate to add as interior, add after other green end auxiliary agents, online is manufactured paper with pulp, enter again the operations such as squeezing, front oven dry, top sizing, post-drying and soft calendaring, made bodystock paper.Wherein this top sizing glue preparation method used is 100 parts of cation surface sizing starch, and 20 parts of calcined kaolins, and other auxiliary agents are heated to 80 ~ 90 ℃ by steaming mixed, digestion time approximately 30 minutes, and glue is admittedly containing being 10%, top sizing amount is 5.0g.Described calcined kaolin is characterized as particle diameter≤2 μ m and accounts for 70% ~ 95% of quality, whiteness >=85%.
(2) carry out surface-coated with this body paper, formulation for coating material is 90 parts, calcium carbonate, 10 parts of china clay, and 10 parts, latex, 15 parts of cationic starches, 0.5 part of fluorescent whitening agent, 0.5 part of wet strength agent, 0.5 part of other auxiliary agent, it is 67% that coating configuration contains admittedly; Total coating weight is that coating weight is 50g.
(3) gained coated paper is carried out to 140 ℃ of press polish ornamenting calendering temperatures, line pressure 200KN, speed of a motor vehicle 1100m/min.
After ornamenting moulding, Substance is 128g, becomes paper moisture content 3.8%, whiteness 89.01%, 185 ℃ of temperature tolerances, paper smoothness 850S.
The coated paper that embodiment 4 makes after rotary printing without bubble, illustrate that the temperature tolerance of coated paper is good, and printing and behavior in service good.
Embodiment 5
(1) the satisfactory sulfate bleach chemical pulp of beating degree (30 ~ 45 ° of SR), Alkaline Peroxide Mechanical Pulp (20 ~ 30 ° of SR), three kinds of slurries of pulp from decoloured waste paper (40 ~ 50 ° of SR) after pulling an oar are carried out with slurry according to the ratio of 65%:30%:5%, add 25% grinding calcium carbonate to add as interior, add after other green end auxiliary agents, online is manufactured paper with pulp, enter again the operations such as squeezing, front oven dry, top sizing, post-drying and soft calendaring, made bodystock paper.Wherein this top sizing glue preparation method used is 100 parts of cation surface sizing starch, and 50 parts of calcined kaolins, and other auxiliary agents are heated to 80 ~ 90 ℃ by steaming mixed, digestion time approximately 30 minutes, and glue is admittedly containing being 30%, top sizing amount is 5.0g.Described calcined kaolin is characterized as particle diameter≤2 μ m and accounts for 70% ~ 95% of quality, whiteness >=85%.
(2) carry out surface-coated with this body paper, formulation for coating material is 90 parts, calcium carbonate, 10 parts of china clay, and 10 parts, latex, 15 parts of cationic starches, 0.5 part of fluorescent whitening agent, 0.5 part of wet strength agent, 0.5 part of other auxiliary agent, it is 67% that coating configuration contains admittedly; Total coating weight is that coating weight is 50g.
(3) gained coated paper is carried out to 140 ℃ of press polish ornamenting calendering temperatures, line pressure 200KN, speed of a motor vehicle 1100m/min.
After ornamenting moulding, Substance is 128g, becomes paper moisture content 3.8%, whiteness 88.74%, 190 ℃ of temperature tolerances, paper smoothness 872S.
The coated paper that embodiment 5 makes after rotary printing without bubble, illustrate that the temperature tolerance of coated paper is good, and printing and behavior in service good.
Embodiment 6
(1) the satisfactory sulfate bleach chemical pulp of beating degree (30 ~ 45 ° of SR), Alkaline Peroxide Mechanical Pulp (20 ~ 30 ° of SR), three kinds of slurries of pulp from decoloured waste paper (40 ~ 50 ° of SR) after pulling an oar are carried out with slurry according to the ratio of 65%:30%:5%, add 25% grinding calcium carbonate to add as interior, add after other green end auxiliary agents, online is manufactured paper with pulp, enter again the operations such as squeezing, front oven dry, top sizing, post-drying and soft calendaring, made bodystock paper.Wherein this top sizing glue preparation method used is 100 parts of cation surface sizing starch, and 70 parts of calcined kaolins, and other auxiliary agents are heated to 80 ~ 90 ℃ by steaming mixed, digestion time approximately 30 minutes, and glue is admittedly containing being 40%, top sizing amount is 5.0g.Described calcined kaolin is characterized as particle diameter≤2 μ m and accounts for 70% ~ 95% of quality, whiteness >=85%.
(2) carry out surface-coated with this body paper, formulation for coating material is 90 parts, calcium carbonate, 10 parts of china clay, and 10 parts, latex, 15 parts of cationic starches, 0.5 part of fluorescent whitening agent, 0.5 part of wet strength agent, 0.5 part of other auxiliary agent, it is 67% that coating configuration contains admittedly; Total coating weight is that coating weight is 50g.
(3) gained coated paper is carried out to 140 ℃ of press polish ornamenting calendering temperatures, line pressure 200KN, speed of a motor vehicle 1100m/min.
After ornamenting moulding, Substance is 128g, becomes paper moisture content 3.8%, whiteness 88.61%, 195 ℃ of temperature tolerances, paper smoothness 898S.
The coated paper that embodiment 6 makes after rotary printing without bubble, illustrate that the temperature tolerance of coated paper is good, and printing and behavior in service good.
Embodiment 7
(1) the satisfactory sulfate bleach chemical pulp of beating degree (30 ~ 45 ° of SR), Alkaline Peroxide Mechanical Pulp (20 ~ 30 ° of SR), three kinds of slurries of pulp from decoloured waste paper (40 ~ 50 ° of SR) after pulling an oar are carried out with slurry according to the ratio of 60%:30%:10%, add 25% grinding calcium carbonate to add as interior, add after other green end auxiliary agents, bodystock paper is manufactured paper with pulp in online.
(2) carry out surface-coated with this body paper, formulation for coating material is 90 parts, calcium carbonate, 10 parts of calcined kaolins, and 5 parts, latex, 15 parts of cationic starches, 0.5 part of fluorescent whitening agent, 0.5 part of wet strength agent, 0.5 part of other auxiliary agent, it is 60% that coating configuration contains admittedly; Total coating weight is that coating weight is 40g.The characteristic of described calcined kaolin is that particle diameter≤2 μ m accounts for 70% ~ 95% of quality, whiteness >=85%.
(3) gained coated paper is carried out to 100 ℃ of press polish ornamenting calendering temperatures, line pressure 150KN, speed of a motor vehicle 1000m/min.
After ornamenting moulding, Substance is 100g, becomes paper moisture content 3.5%, whiteness 89.68%, 185 ℃ of temperature tolerances, paper smoothness 1000S.
The coated paper that embodiment 7 makes after rotary printing without bubble, illustrate that the temperature tolerance of coated paper is good, and printing and behavior in service good.
Embodiment 8
(1) the satisfactory sulfate bleach chemical pulp of beating degree (30 ~ 45 ° of SR), three kinds of slurries of Alkaline Peroxide Mechanical Pulp (20 ~ 30 ° of SR) after pulling an oar are carried out with slurry according to the ratio of 75%:25%, add 25% grinding calcium carbonate to add as interior, add after other green end auxiliary agents, bodystock paper is manufactured paper with pulp in online.
(2) carry out surface-coated with this body paper, formulation for coating material is 70 parts, calcium carbonate, 30 parts of calcined kaolins, and 8 parts, latex, 20 parts of cationic starches, 0.5 part of fluorescent whitening agent, 0.5 part of wet strength agent, 0.5 part of other auxiliary agent, it is 65% that coating configuration contains admittedly; Coating weight is 40g.The characteristic of described calcined kaolin is that particle diameter≤2 μ m accounts for 70% ~ 95% of quality, whiteness >=85%.
(3) gained coated paper is carried out to 120 ℃ of press polish ornamenting calendering temperatures, line pressure 175KN, speed of a motor vehicle 1050m/min.
After ornamenting moulding, Substance is 100g, becomes paper moisture content 3.5%, whiteness 88.87%, 190 ℃ of temperature tolerances, paper smoothness 1052S.
The coated paper that embodiment 8 makes after rotary printing without bubble, illustrate that the temperature tolerance of coated paper is good, and printing and behavior in service good.
Embodiment 9
(1) the satisfactory sulfate bleach chemical pulp of beating degree (30 ~ 45 ° of SR), two kinds of slurries of Alkaline Peroxide Mechanical Pulp (20 ~ 30 ° of SR) after pulling an oar are carried out with slurry according to the ratio of 75%:25%, add 25% grinding calcium carbonate to add as interior, add after other green end auxiliary agents, bodystock paper is manufactured paper with pulp in online.
(2) carry out surface-coated with this body paper, formulation for coating material is 50 parts, calcium carbonate, 50 parts of calcined kaolins, and 8 parts, latex, 20 parts of cationic starches, 0.5 part of fluorescent whitening agent, 0.5 part of wet strength agent, 0.5 part of other auxiliary agent, it is 70% that coating configuration contains admittedly; Coating weight is 40g.The characteristic of described calcined kaolin is that particle diameter≤2 μ m accounts for 70% ~ 95% of quality, whiteness >=85%.
(3) gained coated paper is carried out to 150 ℃ of press polish ornamenting calendering temperatures, line pressure 200KN, speed of a motor vehicle 1200m/min.
After ornamenting moulding, Substance is 100g, becomes paper moisture content 3.5%, whiteness 88.30%, 200 ℃ of temperature tolerances, paper smoothness 1120S.
The coated paper that embodiment 9 makes after rotary printing without bubble, illustrate that the temperature tolerance of coated paper is good, and printing and behavior in service good.
Embodiment 10
(1) the satisfactory sulfate bleach chemical pulp of beating degree (30 ~ 45 ° of SR), two kinds of slurries of Alkaline Peroxide Mechanical Pulp (20 ~ 30 ° of SR) after pulling an oar are carried out with slurry according to the ratio of 75%:25%, add 25% grinding calcium carbonate to add as interior, add after other green end auxiliary agents, bodystock paper is manufactured paper with pulp in online.
(2) carry out surface-coated with this body paper, formulation for coating material is 10 parts, calcium carbonate, 90 parts of calcined kaolins, and 8 parts, latex, 20 parts of cationic starches, 0.5 part of fluorescent whitening agent, 0.5 part of wet strength agent, 0.5 part of other auxiliary agent, it is 62.5% that coating configuration contains admittedly; Coating weight is 40g.The characteristic of described calcined kaolin is that particle diameter≤2 μ m accounts for 70% ~ 95% of quality, whiteness >=85%.
(3) gained coated paper is carried out to 150 ℃ of press polish ornamenting calendering temperatures, line pressure 200KN, speed of a motor vehicle 1200m/min.
After ornamenting moulding, Substance is 100g, becomes paper moisture content 3.5%, whiteness 88.14%, 205 ℃ of temperature tolerances, paper smoothness 1250S.
The coated paper that embodiment 10 makes after rotary printing without bubble, illustrate that the temperature tolerance of coated paper is good, and printing and behavior in service good.
Known from embodiment 1-10: also can increase along with the consumption of calcined kaolin increases its heat resistance, paper surface planarization and gloss, but become paper paper look to decrease, its effect is also because adding the different difference to some extent of workshop section.In addition the addition of calcined earth is also not The more the better, need to take into account the factor such as behavior in service and cost of material.
In addition, those skilled in the art also can make various modifications, interpolation and the replacement in other form and details in the claims in the present invention scope of disclosure and spirit.Certainly, the variations such as various modifications, interpolation and the replacement that these make according to spirit of the present invention, within all should being included in the present invention's scope required for protection.
Claims (9)
1. a coated paper, at least one coating layer that it comprises body paper, forms the glue application layer on body paper surface and form glue application layer surface, it is characterized in that: in the body paper of this coated paper, glue application layer, at least one coating layer, have at least one to contain calcined kaolin, what wherein this calcined kaolin particle diameter was less than or equal to 2 μ m accounts for 70% ~ 95% of calcined kaolin gross mass, and I S O whiteness is more than or equal to 85%; The addition manner of this calcined kaolin in body paper adds as papermaking filler for replacing part papermaking filler, and wherein the addition of calcined kaolin is 10% ~ 40% of over dry stock quality; The addition manner of this calcined kaolin in glue application layer is for add calcined kaolin in table glue, and the addition of calcined kaolin is 20% ~ 70% of table glue quality; The addition manner of this calcined kaolin in coating layer adds as coating pigment for part replaces coating pigment, and its addition is 10% ~ 90% of coating pigment quality.
2. coated paper as claimed in claim 1, it is characterized in that: the slurry that the preparation of this body paper adopts is one or more the combination in sulfate bleach chemical pulp, Alkaline Peroxide Mechanical Pulp or pulp from decoloured waste paper, and wherein in slurry, the mass ratio of sulfate bleach chemical pulp, Alkaline Peroxide Mechanical Pulp, pulp from decoloured waste paper is (60 ~ 100): (0 ~ 30): (0 ~ 10).
3. coated paper as claimed in claim 2, is characterized in that: slurry is processed through making beating, and it is 30 ~ 45 ° of SR of sulfate bleach chemical pulp that each slurry kind reaches beating degree, 20 ~ 30 ° of SR of Alkaline Peroxide Mechanical Pulp, 40 ~ 50 ° of SR of pulp from decoloured waste paper.
4. coated paper as claimed in claim 1, is characterized in that: the coating that at least one coating layer on formation body paper surface uses contains coating pigment 100 parts by mass, cationic starch 10 ~ 50 parts by mass, latex 0 ~ 20 parts by mass, fluorescent whitening agent 0 ~ 2 parts by mass, wet strength agent 0 ~ 0.5 parts by mass, other auxiliary agent 0 ~ 0.5 parts by mass and suitable quantity of water.
5. coated paper as claimed in claim 1, is characterized in that: the oil factor of this calcined kaolin is every 100g calcined kaolin absorption 60 ~ 70g castor oil, and it is 6.0 ~ 8.0 that 325 screen residues are less than or equal to 0.008%, pH value, and water content is less than or equal to 1.5%.
6. coated paper as claimed in claim 1, is characterized in that: the solid content that forms the table glue of glue application layer is 10% ~ 40%.
7. coated paper as claimed in claim 1, is characterized in that: the solid content that forms the coating of coating layer is 50% ~ 70%.
8. coated paper as claimed in claim 1, is characterized in that: these coated paper temperature tolerance >=180 ℃.
9. coated paper as claimed in claim 1, is characterized in that: this coated paper be quantitatively 50 ~ 150g/m
2, water content is 2.5 ~ 6.0%, whiteness>=88%, and paper smoothness is greater than 800s.
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| CN106120444A (en) * | 2016-06-28 | 2016-11-16 | 金华盛纸业（苏州工业园区）有限公司 | A kind of special Copperplate board coating of electrostatic printing and application thereof |
| CN106958160A (en) * | 2017-04-01 | 2017-07-18 | 安徽山鹰纸业股份有限公司 | The preparation method of environmentally friendly writing culture paper |
| CN109137610A (en) * | 2018-08-10 | 2019-01-04 | 浙江理工大学 | A kind of coating paper and preparation method thereof with solar heat reflecting and heat insulating function |
| CN114481703A (en) * | 2022-02-28 | 2022-05-13 | 山东博汇纸业股份有限公司 | Cigarette card suitable for high-speed transfer aluminum plating connection line stripping and production method thereof |
| CN114892445A (en) * | 2022-05-07 | 2022-08-12 | 岳阳林纸股份有限公司 | Special light-weight coated paper for water-based ink digital printing, coating material and application thereof |
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