CN1584205A - Special pigment finishing offset paper and producing method thereof - Google Patents
Special pigment finishing offset paper and producing method thereof Download PDFInfo
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- CN1584205A CN1584205A CN 200410023263 CN200410023263A CN1584205A CN 1584205 A CN1584205 A CN 1584205A CN 200410023263 CN200410023263 CN 200410023263 CN 200410023263 A CN200410023263 A CN 200410023263A CN 1584205 A CN1584205 A CN 1584205A
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Abstract
This invention discovers a special pigment groom hectograph paper and its preparation. It utilizes the advantages of high yields machine pulp (PRC-APMP) and deink pulp (DIP) which is well thickness and green environment. That is optimizing pigment spreading formulation, optimizing pulp to materials ratio and its wet end chemical and copy making technique to reach the white value of all bleaching chemical pulp proportioning copy paper. The advantages of the products are: better printing adaptability, better relaxation thickness, better printing effect features compared with all chemical pulp hectograph paper. It's capable of producing top grade office and printing culture special pigment groom hectograph paper which is made according to different clients' requirement and selecting different optimized features' technique for different application such as laser printing, xerography and hectograph etc. So, it's capable of decreasing all chemical pulp quantity, saving wood, protecting forest, protecting environment from pollution.
Description
One, technical field:
The present invention relates to a kind of special pigment offset paper and manufacture method thereof of multi-functional cultural purposes.
Two, background technology:
The special pigment treated offset paper is called again: multi-functional cultural paper.Along with office automation and micro computer enter family, market demands such as electro-photographic paper, ink-jet laser stamping paper are doubled and redoubled year by year.At present, office automations such as domestic market color jet-ink laser stamping paper, high-grade electro-photographic paper are about 400,000 tons with the paper consumption figure, and major part is dependence on import mainly, or substitute with light weight coated paper, wood-free paper, papers for books and periodicals.Therefore, the multi-functional cultural purposes of a kind of adaptation of Development and Production, and price has the special pigment treated offset paper of big competitive advantage that the good market share and market capacity will be arranged.
In recent years, Yueyang paper industry joint-stock company made great progress at aspects such as tackling of key scientific and technical problems, technological transformation, new product new technology development application.Yueyang paper industry joint-stock company is in the national key research project of " italian poplar APMP new pulping process and application thereof ", captured a series of technical barrier, developed Italian poplar APMP pulp mill bleaching pulping process with independent intellectual property right, go out the APMP slurry of high-quality and successfully developed high-quality magazine/papers for books and periodicals with this explained hereafter with this slurry, the top sizing newsprint, refined high-whiteness newsprint for color printing, pigment treated offset paper, a series of medium-to-high grade paper such as light weight coated paper, product has been filled up domestic blank, quality meets or exceeds external like product advanced level, and this project is won national science and technology progress second prize in 2003.Light weight coated paper (LWC) production line that the annual output of going into operation in 2003 is 200,000 tons, provide by Finland Metso company, production line of paper machine is introduced optimization notion equipment and technology completely from the rewinding that is prepared into of slurry, adopted the machine inner membrance that has of world-class level to be coated with and online multiple pressure district The Technology of Soft Calendering, the automaticity of paper machine is the top level in the world, all adopt intelligent control, can implement control comprehensively to production process, be at present domestic also be state-of-the-art in the world paper production line.Its design kind mainly is the coated paper that contains mechanical pulp, can production offset printing newsprint, serial cultural papers such as pigment treated offset paper, light weight coated paper.The 100000 tons of italian poplars of annual output that match with the project of producing 200000 tons per year are high that the interest rate machine is starched (PRC-APMP) pulping production line, it is state-of-the-artization machine slurry production line in the world now, the PRC-APMP pulping process is that international renowned company Austria Andritz company is absorbing the international later technology that develops on my the company APMP technology basis, it is flexible to have production technology, can produce different slurries according to different paper kinds.Another 100,000 tons/year the pulp from decoloured waste paper production line that matches with 200,000 tons of projects, its main body is introduced from Metso company, the state-of-the-art equipment of the said firm, technology and automatic control technology have been adopted, has the equipment advanced person, technology advanced person, maturation, the automaticity height is by changing waste paper kind, proportioning and production technology, this production line both can have been produced high-quality LWC paper with slurry, can produce the high-quality newsprint again with starching.Adopting italian poplar PRC-APMP slurry, pulp from decoloured waste paper (DIP), long fiber chemical pulp (NKP) to join copies, can bring into play the deinking slurry, the change machine is starched lower-cost advantage, production deflection, opacity, the good multi-functional special pigment treated offset paper of surface property, substitute office automation paper such as present domestic market color ink jet printer paper, high-grade electro-photographic paper, import substitutes, seize the first market opportunities, can obtain bigger profit.
External cultural paper all adopts the mechanical pulp of full chemical pulp or adapted about 10% to join and copies, my company adopts italian poplar PRC-APMP slurry, pulp from decoloured waste paper (DIP), long fiber chemical pulp (NKP) to join multifunctional special cultural papers such as copying electro-photographic paper, laser stamping paper, colored text paper, and this at home and abroad also beyond example.
Domestic and international present Research and development trend
Main print culture such as external color ink jet printer paper, high-grade electro-photographic paper, wood-free paper, light weight coated printing paper, colored text paper generally adopt full chemical wood pulp to join with paper and copy, have a kind of development trend to be now in the world: adapted ground wood pulp or change machine slurry amount are increasing, reach surface property and the paper printability of improving page by pigmentation coating ornamenting again, mainly improve the bulk and the deflection of paper; At present the trend of world market be whiter, more blue, bulk is better, printing quality is higher, but will make the production cost of paper lower simultaneously; The trend of process aspect is to reduce quantitatively and coating weight, increases the calcium carbonate consumption in the formulation for coating material, optimizes adhesive kind and consumption, uses engineering pigment; The development trend of coating apparatus is the pressure that paper bears when reducing coating, improves the coating uniformity, has bigger coating weight scope simultaneously.
Major parts such as domestic color ink jet printer paper, high-grade electro-photographic paper, wood-free paper, light weight coated printing paper, colored text paper adopt chemical straw pulp to add the part chemical wood pulp to join and copy.How a certain proportion of chemi-mechanical pulp of adapted, pulp from decoloured waste paper (DIP) production reach that can to make production cost reduce opacity, bulk, deflection and the ink absorption that can also improve paper be the technical barrier of this area always.
Three, summary of the invention
For addressing the above problem, the purpose of this invention is to provide a kind of special pigment treated offset paper and manufacture method thereof, make full use of the advantage that high interest rate machine slurry (PRC-APMP) and pulp from decoloured waste paper (DIP) bulk reach environmental protection well, by optimizing the pigment application prescription, optimize wet end furnish and wet end chemistry and papermaking process, make paper reach the full bleaching chemical pulp and join the whiteness of copying, but paper has better printability than full chemical pulp offset paper again, better bulk, the characteristic of better printing effect, and can select for use different explained hereafter to go out to be used for laser printing according to the requirement of different user, xerography, the top grade office of different purposes such as hectographic printing, the special pigment treated offset paper of culture printing usefulness.Thereby reach the purpose that reduces full chemical pulp consumption, saving timber, conserves forests, protects environment.
For achieving the above object, technical scheme of the present invention is as follows: a kind of manufacture method of special pigment treated offset paper, comprise with bleached sulphate softwood pulp (BKP), pulp from decoloured waste paper (DIP), meaning poplar alkaline peroxide preliminary treatment thermomechanical pulp (APMP), adapted is manufactured paper with pulp after pulling an oar respectively, and, it is characterized in that through surface of pigments processing, infrared drying, soft roll-in polishing decorations:
(1) slurry weight proportioning bleached sulphate softwood pulp: pulp from decoloured waste paper: meaning poplar alkaline peroxide preliminary treatment thermomechanical pulp is 15-30: 35-50: 20-50;
(2) auxiliary material to the oven dry stock consumption is: (a) sizing agent alkyl ketene dimer (AKD) weight ratio 0.1-0.25%; (b) filler weight compares 8-14%; (c) cationic starch weight ratio 0.6-0.8%, retention agent polyacrylamide (PAM) 200-400ppm, bentonite weight ratio 0.2-0.25%;
(3) each component of surface of pigments treatment agent formula by weight: CaCO
360-90 part, kaolin 5-30 part, latex 1-6 part, starch 4-15 part, carboxymethyl cellulose 0-2 part, water repellent agent 0-2 part;
(4) kowtowed the slurry beating degree after the making beating:
30-40 ° of SR of bleached sulphate softwood pulp;
Pulp from decoloured waste paper 48-65 ° SR;
60-75 ° of SR of meaning poplar alkaline peroxide preliminary treatment thermomechanical pulp;
(5) surface of pigments treatment conditions:
Nip pressure: transmission side/fore side: 18-25/18-25kN/m
Gauge stick moulding pressure: top roll/lower roll: 0.8-1.5/0.8-1.5bar
Paint amount: 5-10g/m
2
(6) soft roll-in optical condition:
Temperature 60-100 ℃, pressure 70-120kN/m
(7) body paper and one-tenth paper moisture weight content are:
Body paper moisture 3.0-6.0% becomes paper moisture 6-8%
The characteristic of the special pigment treated offset paper that (8) makes:
The special pigment treated offset paper that makes quantitatively is 55.0-70.0g/m
2, moisture is 5.8-8%, and whiteness (ISO) is greater than 76%, and opacity is greater than 84%, and the surface absorbs weight less than 32g/m
2, the fracture length roll web is vertically greater than 3600m, and laterally folding strength is greater than 8 times, and the positive and negative two sides of smoothness is on average greater than 40-80, roughness PPS3.5-4.5 μ m, bulk 1.2-1.4cm
3/ g, print surface intensity is not less than 1.0m/S, ash content 16-24%, surperficial pH value is greater than 7.0.
Special pigment treated offset paper by said method obtains is characterized in that:
(1) slurry is bleached sulphate softwood pulp, pulp from decoloured waste paper, meaning poplar alkaline peroxide preliminary treatment thermomechanical pulp, and its weight proportion is 15-30: 35-50: 20-50;
(2) auxiliary material to the oven dry stock consumption is: (a) sizing agent alkyl ketene dimer weight ratio 0.1-0.25%; (b) filler weight compares 8-14%; (c) cationic starch weight ratio 0.6-0.8%, retention agent polyacrylamide 200-400ppm, bentonite weight ratio 0.2-0.25%;
(3) each component of surface of pigments treatment agent formula by weight: CaCO
360-90 part, kaolin 5-30 part, latex 1-6 part, starch 4-15 part, carboxymethyl cellulose 0-2 part, water repellent agent 0-2 part.
Manufacturing technique of the present invention is simple, and manufacturing cost reduces, this product adapted the Italian poplar APMP pulp and the state-of-the-art in the world Italian PRC-APMP of my company's independent intellectual property right starch; Adopt neutral sizing in the slurry, through advanced persons' such as surface metrology size press film transfer coated (surface of pigments processings), soft roll-in polishing decorations production technology.Key technology is: improve optical properties such as italian poplar PRC-APMP slurry bulk, whiteness, light scattering coefficient; Improve pulp from decoloured waste paper (DIP) whiteness, reduce sicker, ink particle content; Explorationization machine slurry (PRC-APMP slurry), pulp from decoloured waste paper (DIP) and the best proportioning of long fiber chemical pulp (NKP); Optimize the pigment application prescription; Excellent Paper dissolving machine finishing process.Our company is by to different personalized products such as Alhue paper, electro-photographic paper, colored text paper, explore mass property indexs such as paper green deformation under the different wet end furnish amount situations, bulk, air permeability respectively, found out change machine slurry (PRC-APMP slurry), pulp from decoloured waste paper (DIP) and the best proportioning of long fiber chemical pulp (NKP); Found high yield machine slurry (PRC-APMP) and pulp from decoloured waste paper (DIP) to join to copy the special pigment treated offset paper and the most important thing is to control by soft roll-in light technological parameter, because 200,000 tons of paper facility of our company are equipped with state-of-the-art in the world finishing device, paper roughness (PPS) adjusting range is bigger, add that special pigment treated offset paper PPS is less demanding, to different personalized products such as Alhue paper, electro-photographic paper, colored text paper takes to control different soft roll temperatures respectively, pressure reaches control paper bulk, opacity, glossiness and printability.The general PPS of special pigment treated offset paper be controlled between the 3.5-4.5um suitable.Can suitably improve surface strength and K﹠amp for colored text paper; The N value.High mountain paper company exploitation is that raw material is joined and copied the special pigment treated offset paper with high yield machine slurry (PRC-APMP) and pulp from decoloured waste paper (DIP), on cost and product quality, has competitive advantage, estimated output reached 50,000 tons in 2004, accounted for domestic market share about 10%.The present invention can select for use different technology individual character production to be used for the top grade office of different purposes such as laser printing, xerography, hectographic printing, the special pigment treated offset paper of culture printing usefulness according to the requirement of different user.Thereby reach the purpose that reduces chemical wood pulp consumption, saving timber, conserves forests, protects environment.Can select the explained hereafter multifunctional special pigment treated offset paper of different individual characteies for use according to the requirement of different user, its product has fine and smooth, the outstanding features such as printing effect is good, whiteness, opacity, bulk height in surface.Can be widely used in the top grade office of different purposes such as laser printing, xerography, hectographic printing, the special pigment treated offset paper of culture printing usefulness.
Four, the specific embodiment
Embodiment 1: needlebush BKP slurry, pulp from decoloured waste paper DIP slurry and the meaning poplar APMP pulp that will beat respectively to suitable beating degree are modulated the 800kg mixed pulp by 25: 35: 40 proportionings, add 80kgCaCO
3Filler and suitable other chemical assistant such as AKD, cationic starch, PAM and bentonite (the about 10kg of total amount) are mixed with paper stock, and paper stock is through manufacturing paper with pulp and handle through surface of pigments, each component of surface of pigments treatment agent formula by weight: CaCO
370 parts, 20 parts of kaolin, 2 parts in latex, 8 parts of starch, paint amount 6.0g/m
2The soft roll-in polishing decorations of infra-red drying batch, and rewinding gets special pigment treated offset paper 1000kg.Manufacture paper with pulp the online concentration 0.75%; The slurry network speed is than about 1.04; The page moisture Control of advancing the surface of pigments processing is 3.0%; Become the paper roll water intaking to divide and be controlled at 5.5%.The special pigment treated offset paper that makes quantitatively is 70g/m
2, moisture is 5.8%, whiteness (ISO) 90%, and opacity 87%, the surface absorbs weight 30g/m
2, the vertical 4200m of fracture length roll web, laterally folding strength is 10 times, the average 80S in the positive and negative two sides of smoothness.The two sides differs from 12%, roughness PPS4.0 μ m, bulk 1.4cm
3/ g, lateral extensometer shrinkage 2.8%, print surface intensity 1.5m/S, ash content 15%, surperficial pH value 7.5.
Embodiment 2: needlebush BKP slurry, pulp from decoloured waste paper DIP slurry and the meaning poplar APMP pulp that will beat respectively to suitable beating degree are modulated the 800kg mixed pulp by 20: 45: 35 proportionings, add 100kgCaCO
3Filler and suitable other chemical assistant such as AKD, cationic starch, PAM and bentonite (the about 8kg of total amount) are mixed with paper stock, and paper stock is through manufacturing paper with pulp and handle through surface of pigments, each component of surface of pigments treatment agent formula by weight: CaCO
375 parts, 10 parts of kaolin, 2 parts in latex, 9 parts of starch, 2 parts of carboxyl methyl celluloses, 2 parts of water repellent agents, paint amount 9.0g/m
2The soft roll-in polishing decorations of infra-red drying batch, and rewinding gets special pigment treated offset paper 1000kg.Manufacture paper with pulp the online concentration 0.80%; The slurry network speed is than about 1.04; The page moisture Control of advancing the surface of pigments processing is 3.0%; Become the paper roll water intaking to divide and be controlled at 5.5%.The special pigment treated offset paper that makes quantitatively is 68g/m
2, moisture is 7.0%, whiteness (ISO) 85%, and opacity 85%, the surface absorbs weight 26g/m
2, the vertical 4500m of fracture length roll web, laterally folding strength is 12 times, the average 70S in the positive and negative two sides of smoothness.The two sides differs from 12%, roughness PPS3.5 μ m, bulk 1.2cm
3/ g, lateral extensometer shrinkage 2.8%, print surface intensity 1.8m/S, ash content 15%, surperficial pH value 8.0.
Claims (2)
1, a kind of manufacture method of special pigment treated offset paper, comprise with bleached sulphate softwood pulp, pulp from decoloured waste paper, meaning poplar alkaline peroxide preliminary treatment thermomechanical pulp, adapted is manufactured paper with pulp after pulling an oar respectively, and, it is characterized in that through surface of pigments processing, infrared drying, soft roll-in polishing decorations:
(1) slurry weight proportioning bleached sulphate softwood pulp: pulp from decoloured waste paper: meaning poplar alkaline peroxide preliminary treatment thermomechanical pulp is 15-30: 35-50: 20-50;
(2) auxiliary material to the oven dry stock consumption is: (a) sizing agent alkyl ketene dimer weight ratio 0.1-0.25%; (b) filler weight compares 8-14%; (c) cationic starch weight ratio 0.6-0.8%, retention agent polyacrylamide 200-400ppm, bentonite weight ratio 0.2-0.25%;
(3) each component of surface of pigments treatment agent formula by weight: CaCO
360-90 part, kaolin 5-30 part, latex 1-6 part, starch 4-15 part, carboxymethyl cellulose 0-2 part, water repellent agent 0-2 part;
(4) kowtowed the slurry beating degree after the making beating:
30-40 ° of SR of bleached sulphate softwood pulp;
Pulp from decoloured waste paper 48-65 ° SR;
60-75 ° of SR of meaning poplar alkaline peroxide preliminary treatment thermomechanical pulp;
(5) surface of pigments treatment conditions:
Nip pressure: transmission side/fore side: 18-25/18-25kN/m
Gauge stick moulding pressure: top roll/lower roll: 0.8-1.5/0.8-1.5bar
Paint amount: 5-10g/m
2
(6) soft roll-in optical condition:
Temperature 60-100 ℃, pressure 70-120kN/m
(7) body paper and one-tenth paper moisture weight content are:
Body paper moisture 3.0-6.0% becomes paper moisture 6-8%
The characteristic of the special pigment treated offset paper that (8) makes:
The special pigment treated offset paper that makes quantitatively is 55.0-70.0g/m
2, moisture is 5.8-8%, and whiteness is greater than 76%, and opacity is greater than 84%, and the surface absorbs weight less than 32g/m
2, the fracture length roll web is vertically greater than 3600m, and laterally folding strength is greater than 8 times, and the positive and negative two sides of smoothness is on average greater than 40-80, roughness 3.5-4.5 μ m, bulk 1.2-1.4cm
3/ g, print surface intensity is not less than 1.0m/S, ash content 16-24%, surperficial pH value is greater than 7.0.
2, the special pigment treated offset paper that is obtained by the manufacture method of claim 1 is characterized in that:
(1) slurry is bleached sulphate softwood pulp, pulp from decoloured waste paper, meaning poplar alkaline peroxide preliminary treatment thermomechanical pulp, and its weight proportion is 15-30: 35-50: 20-50;
(2) auxiliary material to the oven dry stock consumption is: (a) sizing agent alkyl ketene dimer weight ratio 0.1-0.25%; (b) filler weight compares 8-14%; (c) cationic starch weight ratio 0.6-0.8%, retention agent polyacrylamide 200-400ppm, bentonite weight ratio 0.2-0.25%;
(3) each component of surface of pigments treatment agent formula by weight: CaCO
360-90 part, kaolin 5-30 part, latex 1-6 part, starch 4-15 part, carboxymethyl cellulose 0-2 part, water repellent agent 0-2 part.
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| CN 200410023263 CN1276151C (en) | 2004-05-28 | 2004-05-28 | Special pigment finishing offset paper and producing method thereof |
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|---|---|---|---|
| CN 200410023263 CN1276151C (en) | 2004-05-28 | 2004-05-28 | Special pigment finishing offset paper and producing method thereof |
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| CN1584205A true CN1584205A (en) | 2005-02-23 |
| CN1276151C CN1276151C (en) | 2006-09-20 |
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| CN100387776C (en) * | 2005-09-01 | 2008-05-14 | 岳阳纸业股份有限公司 | High-quality colour printing newsprint and making technique thereof |
| CN101851873A (en) * | 2010-06-23 | 2010-10-06 | 岳阳纸业股份有限公司 | Manufacturing method of environment-friendly copying paper |
| CN101886350A (en) * | 2010-06-25 | 2010-11-17 | 厦门安妮股份有限公司 | Novel duplicating paper |
| CN102268836A (en) * | 2011-07-26 | 2011-12-07 | 岳阳林纸股份有限公司 | Method for making slight-coating light paper |
| CN102277776A (en) * | 2011-08-05 | 2011-12-14 | 长沙理工大学 | Method for making slightly-coated elegant pure paper |
| CN102378725A (en) * | 2009-04-03 | 2012-03-14 | 柯思纳斯有限公司 | A pigment coated paperboard adapted for sterilizable packages |
| CN102383338A (en) * | 2011-09-30 | 2012-03-21 | 金华盛纸业（苏州工业园区）有限公司 | Surface sizing composition and application thereof |
| CN101638861B (en) * | 2009-08-16 | 2012-07-18 | 岳阳林纸股份有限公司 | Manufacturing method of industrial film coated base paper |
| CN102660892A (en) * | 2012-05-31 | 2012-09-12 | 金华盛纸业（苏州工业园区）有限公司 | Electrical-photographic paper |
| CN103103872A (en) * | 2012-12-14 | 2013-05-15 | 中冶美利纸业股份有限公司 | Method for producing copy paper by high-proportion chemi-mechanical pulp |
| CN103140425A (en) * | 2010-09-28 | 2013-06-05 | 利乐拉瓦尔集团及财务有限公司 | A method of producing a packaging material for a retortable package |
| CN103290729A (en) * | 2013-05-23 | 2013-09-11 | 德州华北纸业(集团)有限公司 | Production method of environment-friendly type electrostatic copy paper |
| CN105155332A (en) * | 2015-09-15 | 2015-12-16 | 岳阳林纸股份有限公司 | Production method of top-grade book white offset printing paper |
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| CN108978320A (en) * | 2018-07-12 | 2018-12-11 | 福建省晋江优兰发纸业有限公司 | A kind of preparation method of wood-free paper |
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| CN100387776C (en) * | 2005-09-01 | 2008-05-14 | 岳阳纸业股份有限公司 | High-quality colour printing newsprint and making technique thereof |
| CN102378725A (en) * | 2009-04-03 | 2012-03-14 | 柯思纳斯有限公司 | A pigment coated paperboard adapted for sterilizable packages |
| CN101638861B (en) * | 2009-08-16 | 2012-07-18 | 岳阳林纸股份有限公司 | Manufacturing method of industrial film coated base paper |
| CN101851873A (en) * | 2010-06-23 | 2010-10-06 | 岳阳纸业股份有限公司 | Manufacturing method of environment-friendly copying paper |
| CN101851873B (en) * | 2010-06-23 | 2013-04-17 | 岳阳林纸股份有限公司 | Manufacturing method of environment-friendly copying paper |
| CN101886350A (en) * | 2010-06-25 | 2010-11-17 | 厦门安妮股份有限公司 | Novel duplicating paper |
| CN103140425B (en) * | 2010-09-28 | 2015-11-25 | 利乐拉瓦尔集团及财务有限公司 | A kind ofly produce that be used for can the method for packing of retort pouch |
| CN103140425A (en) * | 2010-09-28 | 2013-06-05 | 利乐拉瓦尔集团及财务有限公司 | A method of producing a packaging material for a retortable package |
| CN102268836B (en) * | 2011-07-26 | 2012-11-07 | 岳阳林纸股份有限公司 | Method for making slight-coating light paper |
| CN102268836A (en) * | 2011-07-26 | 2011-12-07 | 岳阳林纸股份有限公司 | Method for making slight-coating light paper |
| CN102277776B (en) * | 2011-08-05 | 2012-09-05 | 长沙理工大学 | Method for making slightly-coated elegant pure paper |
| CN102277776A (en) * | 2011-08-05 | 2011-12-14 | 长沙理工大学 | Method for making slightly-coated elegant pure paper |
| CN102383338B (en) * | 2011-09-30 | 2014-05-07 | 金华盛纸业（苏州工业园区）有限公司 | Surface sizing composition and application thereof |
| CN102383338A (en) * | 2011-09-30 | 2012-03-21 | 金华盛纸业（苏州工业园区）有限公司 | Surface sizing composition and application thereof |
| CN102660892A (en) * | 2012-05-31 | 2012-09-12 | 金华盛纸业（苏州工业园区）有限公司 | Electrical-photographic paper |
| CN103103872A (en) * | 2012-12-14 | 2013-05-15 | 中冶美利纸业股份有限公司 | Method for producing copy paper by high-proportion chemi-mechanical pulp |
| CN103290729B (en) * | 2013-05-23 | 2014-08-27 | 德州华北纸业(集团)有限公司 | Production method of environment-friendly type electrostatic copy paper |
| CN103290729A (en) * | 2013-05-23 | 2013-09-11 | 德州华北纸业(集团)有限公司 | Production method of environment-friendly type electrostatic copy paper |
| CN105155332A (en) * | 2015-09-15 | 2015-12-16 | 岳阳林纸股份有限公司 | Production method of top-grade book white offset printing paper |
| CN105155332B (en) * | 2015-09-15 | 2017-06-20 | 岳阳林纸股份有限公司 | A kind of production method of high-grade raw white offset printing paper |
| CN105239442A (en) * | 2015-10-14 | 2016-01-13 | 东莞玖龙纸业有限公司 | Preparation method of low-shrinkage secondary fiber release raw paper |
| CN108978320A (en) * | 2018-07-12 | 2018-12-11 | 福建省晋江优兰发纸业有限公司 | A kind of preparation method of wood-free paper |
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