CN102852041B - Preparation method for writing paper - Google Patents
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- CN102852041B CN102852041B CN201210319156.7A CN201210319156A CN102852041B CN 102852041 B CN102852041 B CN 102852041B CN 201210319156 A CN201210319156 A CN 201210319156A CN 102852041 B CN102852041 B CN 102852041B
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Abstract
The invention brings forward a preparation method for writing paper. The preparation method comprises the following steps: 1) preparation of a pulp: a step of subjecting 0 to 100 parts of a bleached chemical pulp and 0 to 80 parts of a mechanical pulp to pulp dispersing, pulp refining or defibering and pulp batching so as to obtain the pulp; 2) addition of wet end chemicals, wherein the added wet end chemicals comprise an internal sizing agent, a filling material, a retention aid and a reinforcing agent; 3) surface sizing: a step of adding a surface sizing agent into a product obtained in step 2), wherein the surface sizing agent comprises a starch surface sizing agent and a cation surface sizing agent; and 4) papermaking: a step of subjecting a product obtained in step 3) to dehydration to prepare the paper. The method brought forward by the invention employs surface pretreatment technology and uses the cation surface sizing agent in the step of surface sizing, so the phenomenon of migration of dyes on the prepared writing paper is avoided, the usage amount of the mechanical pulp is increased and ash content in the paper is improved; thus, the purposes of conservation of the resource of trees and environmental protection are achieved.
Description
Technical field
The invention belongs to the mixture field of paper pulp, be specially a kind of preparation method of writing paper.
Background technology
A lot of as the paper of writing paper in the market, if but terminal use to use type of dye ink to write while existing the higher and mechanical pulp consumption of strike phenomenon, especially greyness of paper higher more, the possibility of striking will be larger.Striking is to write rear dyestuff with the phenomenon of ink migration, causes writing unclear, and writing effect declines.Ink divides type of dye ink and pigment ink, and type of dye ink has good color restoration capability, but the waterproof ability of its hard copy is poor, and the characteristic of paint ink is contrary, and it has good water resistance, but color restoration capability can be slightly weaker.
From a structural point, the dye coloring agent in dye ink is to be dissolved in completely in ink in unimolecule mode, and its coloring agent particle is little, soluble in water or other chemical solvents.But the dye coloring agent of dye ink has a large amount of hydrocolloid particles, soluble.Once write like this original text, meet water, the colouring agent originally fixing on medium will dissolve again, and along with flowing of water spread to surrounding, cause writing effect to decline.General writing paper, for fear of using type of dye ink to occur the phenomenon of striking, must be controlled content of ashes and mechanical pulp consumption, can not be too high, and general writing paper ash content is below 20%, and mechanical pulp consumption is no more than 10%.General bleached chemical pulp yield is 40-50%, the most nearly 55%, and mechanical pulp yield be 85-90% even up to 95%, the yield of mechanical pulp is apparently higher than bleach chemical pulp.If increase the application of mechanical pulp, for the utilization rate that promotes the natural resourcess such as wood type, there is significant contribution, can effectively protect forest resources, preserve the ecological environment.
Above problem can be selected suitable additive by utilizing paper surface preconditioning technique, prepares suitable paper, reduces or avoids the type of dye ink problem of striking.
Summary of the invention
For the deficiency of existing paper technology, the preparation method that the present invention proposes a kind of applicable type of dye ink, writes the writing paper of not striking.
Another object of the present invention is the paper that proposition obtains by described method.
For realizing above-mentioned purpose of the present invention, concrete technical scheme is:
A preparation method for writing paper, comprises step:
1) slurrying: the bleach chemical pulp of weight portion 0-100 part and the mechanical pulp of 0-80 part, through loose slurry, defibrination or discongest, the slurry that obtains with slurry;
2) add wet-end chemicals: the wet-end chemicals of interpolation comprises internal sizing agent, filler, reservation auxiliary agent and reinforcing agent;
3) top sizing: to step 2) in products therefrom, add Cypres, described Cypres comprises starch based Cypres and cationic surface-sizing agent;
4) manufacture paper with pulp: step 3) products therefrom is made paper through dehydration.
Wherein, described internal sizing agent is that addition is the alkyl ketene dimer of 4-15 kg/tonne of paper, and/or addition is the alkenyl succinic anhydride of 1-1.5 kg/tonne of paper.
Wherein, described filler is a kind of in calcium carbonate, kaolin, talcum powder, mineral fibres, mica, titanium dioxide, and addition is 100-500 kg/tonne of paper.The kaolin of described kaolin preferred filler level.Use method greyness of paper of the present invention can reach 10 ~ 50%, amount of filler can reach a ton paper 100kg ~ 500kg, and amount of filler increases; ash amount increases; can reduce the consumption of lumber fibre, more be conducive to the protection for forest, reduce the impact for ecological environment.
Wherein, described reservation auxiliary agent is polyacrylamide, and addition is 0.05 ~ 0.5 kg/tonne of paper, and described reinforcing agent is starch based reinforcing agent, and addition is 5 ~ 15 kgs/tonne of paper.
Wherein, described starch based Cypres is a kind of in the oxidized starch of raw material or enzyme converted starch of one or more in cassava, potato, Ipomoea batatas, corn or wheat.
Paper surface preconditioning technique is the material of selecting cationic, adds in surface sizing starch, utilizes electrostatic adsorption mutual between cationic substance and anionic dye, dyestuff in quick fixedly ink, thereby make dyestuff not with ink migration, reach and improve the object of striking
According to the difference of the difference of greyness of paper and mechanical pulp consumption, as long as the ratio of corresponding adjustment cationic substance in starch can reach counteracting or significantly improve the risk of striking that ash content promotes and the lifting of mechanical pulp consumption brings.For example, mechanical pulp 0-35%, cationic surface-sizing agent accounts for the 5-10% of starch based Cypres; Mechanical pulp 35-55%, cationic surface-sizing agent accounts for the 10-20% of starch based Cypres; Mechanical pulp 55-80%, cationic surface-sizing agent accounts for 20 ~ 40% of starch based Cypres.
Preferably, described starch based Cypres be one or more in cassava, potato, Ipomoea batatas, corn or wheat be the cationic starch of raw material.
Wherein, described cationic surface-sizing agent is cationic polyacrylamide or polyamide carbamide resin (PAPU), cationic alkyl ketene dimer, cationic copolymer in cinnamic acrylic ester etc., wherein the aobvious weak cation of PAPU.Described cationic surface-sizing agent consumption is 0.1-10 kg/tonne of paper.
Preferably, described cationic surface-sizing agent consumption is 2-5 kg/tonne of paper.
The paper that the preparation method that the present invention proposes prepares.
Beneficial effect of the present invention is:
Utilize surface preparation technology, in top sizing step, add cationic gluing agent, utilize electrostatic adsorption mutual between cationic substance and anionic dye, the quick fixing dyestuff in ink, thus dyestuff is not moved with ink, avoided the paper phenomenon of striking, and can increase mechanical pulp consumption, the ash content of paper also can improve, thereby has saved tree resources, reaches the object of environmental protection.
The specific embodiment
Below in conjunction with specific embodiment, the specific embodiment of the present invention is described in further detail.Following examples are used for illustrating the present invention, but should not be used for limiting the scope of the invention.The equipment using in embodiment and method, if no special instructions, be this area common device and method.
In embodiment, the assay method secundum legem GB/T22877-2008 of ash content.Cobb60 refers to suddenly method test water imbibition of use, and the testing time is 60 seconds, and method of testing is according to standard GB/T/T1540-2002.Smoothness is measured and is used smoothness tester (Frank-PTI, Germany).The method of testing of striking is GB/T 460-2008.The grammes per square metre of paper or basic weight are controlled by the basic weight valve on paper machine.
The alkyl ketene dimer using is purchased from Suzhou according to card chemistry, and alkenyl succinic anhydride (AS2300) is purchased from Finland Kemira.
The writing paper basis weight range making in embodiment is 60-100 gram/m.
Embodiment 1:
Preparation process and the physical index of the present embodiment writing paper are as follows:
1. slurrying: adopt 100wt% bleach chemical pulp (Jin Hai of APP starches factory, and model is Eucalyptus AS), mechanical pulp 0%; Slurry is through loose slurry, paste mill grinding, and the process such as with slurry prepares slurry.Wherein, bleach chemical pulp is through loose slurry, defibrination, with slurry, mechanical pulp through loosely starching, discongest, with slurry.By controlling subsequent step, make every 0.80 ton of slurry obtain 1 ton of paper.
2. add wet-end chemicals: 10 kgs/tonne of paper of alkyl ketene dimer, 200 kgs/tonne of paper of filler, retain auxiliary agent polyacrylamide and starch based reinforcing agent and add by 0.05 kg/tonne of paper and 5 kgs/tonne of paper consumptions.
3. top sizing: cassava oxidized starch is as surface sizing starch, and consumption is 25 kgs/tonne of paper, adds cationic copolymer in cinnamic acrylic ester in surface sizing starch, and addition is 2 kgs/tonne of paper.
4. manufacture paper with pulp: with paper machine dryer, by Steam Heating, be dried, be curled into paper
5. physical index: basic weight: 60 grams/m, ash content (525 degree): 20%, smoothness: 45 seconds/10 milliliters, test: the 0.75mm that strikes, Cobb60:22 gram/m.
Embodiment 2:
Preparation process and the physical index of the present embodiment writing paper are as follows:
1. slurrying: adopt 20wt% bleach chemical pulp, mechanical pulp 80wt% (Meadow Lake, model is BCTMP 350/75/70); Slurry is through loose slurry, paste mill grinding or discongest, and the process such as with slurry prepares slurry.
2. add wet-end chemicals: 4 kgs/tonne of paper of alkyl ketene dimer, 1.0 kgs/tonne of paper of alkenyl succinic anhydride, 500 kgs/tonne of paper of filler, retain auxiliary agent polyacrylamide and starch based reinforcing agent and add by 0.5 kg/tonne of paper and 15 kgs/tonne of paper consumptions
3. top sizing: maize oxidized starch is as surface sizing starch, and consumption is 40 kgs/tonne of paper, adds the alkyl ketene dimer emulsion of cationic polymer emulsification in surface sizing starch, and addition is 8 kgs/tonne of paper.
4. manufacture paper with pulp: with paper machine dryer, by Steam Heating, be dried, be curled into paper
5. physical index: basic weight: 80 grams/m, ash content (525 degree): 50%, smoothness: 35 seconds/10 milliliters, test: the 0.75mm that strikes, Cobb60:25 gram/m.
Embodiment 3:
Preparation process and the physical index of the present embodiment writing paper are as follows:
1. slurrying: adopt 50wt% bleach chemical pulp, mechanical pulp 50wt%; Slurry is through loose slurry, paste mill grinding or discongest, and the process such as with slurry prepares slurry.By controlling subsequent step, make every 0.75 ton of slurry obtain 1 ton of paper.
2. add wet-end chemicals: 4 kgs/tonne of paper of alkyl ketene dimer, 1.0 kgs/tonne of paper of alkenyl succinic anhydride, 350 kgs/tonne of paper of filler, retain auxiliary agent polyacrylamide and starch based reinforcing agent and add by 0.25 kg/tonne of paper and 10 kgs/tonne of paper consumptions.
3. top sizing: wheat enzyme converted starch is as surface sizing starch, and surface sizing starch consumption is 30 kgs/tonne of paper, and the cationic substance adding in top sizing is polyamide polyurea, and addition is 10 kgs/tonne of paper.
4. manufacture paper with pulp: with paper machine dryer, by Steam Heating, be dried, be curled into paper
5. physical index: basic weight: 100 grams/m, ash content (525 degree): 35%, smoothness: 40 seconds/10 milliliters, test: the 0.75mm that strikes, Cobb60:23 gram/m.
The enzyme converted starch that the present embodiment is used refers to the strand that removes to cut off starch by the method for biology enzyme, reaches the object that reduces starch viscosity, is the starch that a kind of conversion obtains.The technique that our factory's self-control enzyme converted starch is made is as follows:
A, wheaten starch are dispersed into 25 ~ 35% farinaceous size after adding water stirring;
B, to the middle temperature amylase that adds 100 ~ 300ppm in scattered farinaceous size, diastatic model is 480L, manufacturer is Novi's letter;
C, add in the later farinaceous size of warm amylase through the Insulation of 10 ~ 30 minutes 70 ~ 80 degree;
D, finally by crossing injecting type (Jetcooker) boiling, on the one hand starch is boiled, in addition on the one hand by middle temperature amylase through high-temperature inactivation.The time of boiling is 30min.
Embodiment 4
Preparation process and the physical index of the present embodiment writing paper are as follows:
1. slurrying: adopt 40wt% bleach chemical pulp, mechanical pulp 60wt%; Slurry is through loose slurry, paste mill grinding or discongest, and the process such as with slurry prepares slurry.
2. add wet-end chemicals: 1.5 kgs/tonne of paper of alkenyl succinic anhydride, 400 kgs/tonne of paper of filler, retain auxiliary agent polyacrylamide and starch based reinforcing agent and add by 0.15 kg/tonne of paper and 8 kgs/tonne of paper consumptions.
3. top sizing: cationic cornstarch is as surface sizing starch, and consumption is 30 kgs/tonne of paper, adds cationic alkyl ketene dimer in surface sizing starch, and addition is 6 kgs/tonne of paper.
4. manufacture paper with pulp: with paper machine dryer, by Steam Heating, be dried, be curled into paper
5. physical index: basic weight: 80 grams/m, ash content (525 degree): 40%, smoothness: 35 seconds/10 milliliters, test: the 0.75mm that strikes, Cobb60:25 gram/m.
Although above use generality illustrates, the present invention is described in detail for the test of specific embodiments transitivity, on basis of the present invention, can make some modifications or improvements it, this will be apparent to those skilled in the art.Therefore, these modifications or improvements, all belong to the scope of protection of present invention without departing from theon the basis of the spirit of the present invention.
Claims (1)
1. a preparation method for writing paper, comprises step:
1) slurrying: the bleach chemical pulp of weight portion 20-50 part and the mechanical pulp of 50-80 part, through loose slurry, defibrination or discongest, the slurry that obtains with slurry;
2) add wet-end chemicals: the wet-end chemicals of interpolation is internal sizing agent, filler, reservation auxiliary agent and reinforcing agent;
Wherein, described filler is a kind of in calcium carbonate, kaolin, talcum powder, mineral fibres, mica, titanium dioxide, and addition is 350-500 kg/tonne of paper; Described internal sizing agent is that addition is the alkyl ketene dimer of 4-15 kg/tonne of paper, and/or addition is the alkenyl succinic anhydride of 1-1.5 kg/tonne of paper; Described reservation auxiliary agent is polyacrylamide, and addition is 0.05～0.5 kg/tonne of paper, and described reinforcing agent is starch based reinforcing agent, and addition is 5～15 kgs/tonne of paper;
3) top sizing: to step 2) in products therefrom, add Cypres, described Cypres comprises starch based Cypres and cationic surface-sizing agent;
Wherein, described cationic surface-sizing agent is a kind of in cationic polyacrylamide, polyamide carbamide resin, cationic alkyl ketene dimer, cationic copolymer in cinnamic acrylic ester; Described starch based Cypres is that one or more in cassava, potato, Ipomoea batatas, corn or wheat are the cationic starch of raw material;
Wherein, described cationic surface-sizing agent consumption is 2-5 kg/tonne of paper;
According to the difference of the difference of greyness of paper and mechanical pulp consumption, the ratio of corresponding adjustment cationic substance in starch, is specially: mechanical pulp 35-55%, and cationic surface-sizing agent accounts for the 10-20% of starch based Cypres; Mechanical pulp 55-80%, cationic surface-sizing agent accounts for 20～40% of starch based Cypres;
4) manufacture paper with pulp: step 3) products therefrom makes paper through dehydration.
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| CN201210319156.7A CN102852041B (en) | 2012-08-31 | 2012-08-31 | Preparation method for writing paper |
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| CN201210319156.7A CN102852041B (en) | 2012-08-31 | 2012-08-31 | Preparation method for writing paper |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103103860B (en) * | 2013-03-01 | 2015-06-10 | 山东凯丽特种纸股份有限公司 | Imitated rice paper production method |
| CN103741557B (en) * | 2013-12-31 | 2015-10-14 | 上海骏源实业股份有限公司 | A kind of manufacture method of scalding saturating paper |
| CN104404813B (en) * | 2014-12-19 | 2016-03-02 | 王祥兵 | The method of china picture-character paper and china picture-character paper prepared therefrom are prepared in a kind of mechanization |
| CN110885403B (en) * | 2018-09-11 | 2022-08-30 | 上海东升新材料有限公司 | Modified starch emulsifier and AKD emulsion prepared by adopting same |
| CN110453531A (en) * | 2019-08-28 | 2019-11-15 | 泰中特种纸有限公司 | A kind of sheen eyeshield paper and preparation method thereof |
| CN112626925A (en) * | 2020-12-18 | 2021-04-09 | 上海鱼圆文具有限公司 | Preparation process of color ink writing paper and color ink writing paper |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85104429A (en) * | 1984-05-07 | 1986-12-10 | 米德公司 | Ink mist recording version with bi-component cation recording surface |
| CN1687523A (en) * | 2005-04-01 | 2005-10-26 | 缪尔新 | Low-density office paper |
| CN101787660A (en) * | 2009-01-23 | 2010-07-28 | 山东福荫造纸环保科技有限公司 | Writing paper and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10287040A (en) * | 1997-04-11 | 1998-10-27 | Fuji Xerox Off Supply Kk | Information-recording paper |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85104429A (en) * | 1984-05-07 | 1986-12-10 | 米德公司 | Ink mist recording version with bi-component cation recording surface |
| CN1687523A (en) * | 2005-04-01 | 2005-10-26 | 缪尔新 | Low-density office paper |
| CN101787660A (en) * | 2009-01-23 | 2010-07-28 | 山东福荫造纸环保科技有限公司 | Writing paper and preparation method thereof |
Non-Patent Citations (1)
| Title |
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| JP特开平10-287040A 1998.10.27 |
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Effective date of registration: 20220629 Address after: 570100 zone D12, Yangpu Economic Development Zone, Danzhou City, Hainan Province Patentee after: HAINAN JINHAI PULP & PAPER Co.,Ltd. Address before: 215126 No.2, Jinsheng Road, Shengpu, Suzhou Industrial Park, Suzhou, Jiangsu Province Patentee before: GOLD HUASHENG PAPER (SUZHOU INDUSTRIAL PARK) Co.,Ltd. |
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