CN103233380A - Paper preparing process - Google Patents
Paper preparing process Download PDFInfo
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- CN103233380A CN103233380A CN2013101650619A CN201310165061A CN103233380A CN 103233380 A CN103233380 A CN 103233380A CN 2013101650619 A CN2013101650619 A CN 2013101650619A CN 201310165061 A CN201310165061 A CN 201310165061A CN 103233380 A CN103233380 A CN 103233380A
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Abstract
A paper preparing process includes steps of: providing softwood pulp and hardwood pulp and defibering the softwood pulp and the hardwood pulp respectively, wherein the absolute dry mass ratio of the hardwood pulp and the softwood pulp ranges from 1 to 4; filling softening agents into the defibered hardwood pulp; mixing the hardwood pulp filled with the softening agents and the defibered softwood pulp to obtain mixed pulp; and leading the mixed pulp to be subjected to papermaking to obtain paper. The paper preparing process can improve use ratio of the softening agents, reduce consumption of the softening agents and reduce the residual quantity of the softening agents in a white water system.
Description
Technical field
The present invention relates to a kind of preparation technology of paper.
Background technology
Along with the lifting of consumer to paper for daily use pliability demand, caused the addition of paper grade (stock) softener more and more higher, can increase the cost of investment of papermaking chemical drug so on the one hand, may cause the excessive use of paper grade (stock) softener on the other hand, and the softener of excessive use can remain in the white-water system, influence the electric charge of white-water system, make the utilization rate of other paper grade (stock) chemical drugs reduce, cause vicious circle.
Summary of the invention
In view of this, be necessary to provide a kind of preparation technology of paper, it can better bring into play the service efficiency of softener, reduces the use amount of softener.
A kind of preparation technology of paper, it comprises the steps:
Softwood pulp and hardwood pulp are provided, and wherein the over dry mass ratio of hardwood pulp and softwood pulp is discongested softwood pulp and hardwood pulp respectively between 1 and 4;
Add softener in the hardwood pulp after discongest;
With the hardwood pulp that is added with softener with discongest after softwood pulp mix and obtain mixing slurry;
To mix slurry manufactures paper with pulp and makes paper.
Technology of the present invention can improve the service efficiency of softener, reduces the use amount of softener, reduces the residual quantity of softener in white-water system.
The specific embodiment
The preparation technology of paper of the present invention, it comprises the steps:
(1) provide softwood pulp and hardwood pulp, wherein the over dry mass ratio of hardwood pulp and softwood pulp is discongested softwood pulp and hardwood pulp respectively between 1 and 4.
Discongest step and use fluffer, the mass percentage concentration of preferably controlling softwood pulp and hardwood pulp when discongesting is respectively 3%～15%, and it is better that this concentration range is discongested effect.
Discongest fiber in the process except being sheared, rub the effect with combing, simultaneously the cell membrane of fiber also is subjected to displacement, thereby modification and phenomenon such as break absorb water swollen, produce fibrillating, make paper pulp have flexibility, plasticity, also make the more hydroxyl that comes out in the cellulose molecular chain, improved the adhesion between the fiber.
Softwood pulp after discongesting and hardwood pulp also optionally carry out defibrination respectively to be handled.The defibrination revolution of the employing routine of defibrination treatment step (1000～6000 change) gets final product.The mass percentage concentration of preferably controlling softwood pulp and hardwood pulp during defibrination is 5%～20%.This defibrination treatment step is inessential step, can not carry out.Defibrination can impel the fiber wire-dividing broom purification, and defibrination mainly is intensity and the freedom of influence slurry, if intensity and freedom are not had special requirement, defibrination can not carry out, perhaps the mode with other substitutes, such as uses dry strength agent, perhaps makes the amount of long fibre in the slurry more.
(2) hardwood pulp after discongest or not only carried out is discongested but also has been carried out adding softener in the hardwood pulp of defibrination, and the addition of this softener is 0.001%～2% of broad-leaved wood fiber over dry quality.The paper of generally manufacturing paper with pulp, the addition of softener is the 0.0005%-2% of the total over dry quality of fiber.The addition of softener of the present invention belongs to the normal ranges of softener addition.Softwood pulp behind the interpolation softener can make softener mix with fiber better by the device of agitator or static mixer and so on.
This softener can be the conventional all kinds of softeners that use of field of papermaking, preferably uses cationic quaternary amine resin.
(3) softwood pulp after the hardwood pulp that will be added with softener and above-mentioned the discongesting mixes and obtains mixing slurry.
(4) will mix slurry manufactures paper with pulp and makes paper.
Concrete, if what manufacture paper with pulp is paper for daily use, can be by making paper after forming web dehydration, moulding, squeezing, the drying and other steps.
Understandable, also add some conventional papermaking chemicals in the mixing slurry of the present invention, such as dry strength agent, wet strength agent, CMC, retention agent, defoamer, filler etc.
Needle-leaved wood fibre (long fiber) is different with the fibre morphology feature of broad-leaved wood fiber (staple fibre), the length of broad-leaved wood fiber is far below needle-leaved wood fibre, and the length of fiber has close relationship with becoming the pliability of paper at last, and long fiber and the staple fibre of same quality, the hydroxyl quantity on long fiber surface is more than leaf wood, that is to say that the point of bond can be provided is many.The length of broad-leaved wood fiber is shorter, and the hydroxyl negligible amounts of fiber surface, and the paper strength of formation is low, and pliability is higher, adds a spot of softener like this and just can reach very high soft degree.The length of needle-leaved wood fibre is longer, and the hydroxyl quantity of fiber surface is more, the paper strength height of formation, and pliability is lower, and a large amount of softener of needs adding destroys the bond between the fiber like this, strengthens soft effect with this.
Paper preparation technology of the present invention at the difference of needle-leaved wood fibre and broad-leaved wood fiber, mixes softener in advance with broad-leaved wood fiber, needle-leaved wood fibre is mixed with broad-leaved wood fiber afterwards again and copy paper.So make an addition under the equal slurry situation at the softener that adopts isodose, the wet strength of the paper of adding method of the present invention (softener makes an addition in the hardwood pulp in advance, mixes with softwood pulp again) preparation is than the pliability height of the paper that adopts traditional adding method (softener directly makes an addition in the mixing slurry of needlebush and leaf wood) preparation.Paper preparation technology of the present invention can improve the service efficiency of softener, reduces the use amount of softener, reduces the residual quantity of softener in white-water system.
Come the present invention is specifically described below by embodiment.
Embodiment 1
Adopt the softener of Bark Man, the softener consumption is 0.286% of broad-leaved wood fiber over dry quality, wherein the broad-leaved slurry is 70:30 with needle slurry mass ratio, the needle slurry is starched respectively through discongesting processing with broad-leaved, the quality of fiber percentage concentration is 5% when discongesting, the broad-leaved slurry changes through defibrination 1000 then, the needle slurry changes through defibrination 2500, the quality of fiber percentage concentration is 10% during defibrination, softener all joined in the broad-leaved slurry handle 5min, add the needle slurry then and mix with it, copy sheet after the mixing, sheet basis weight is 30g/m
2
Through test, the paper fracture length made from the method is 2.06km.
Comparative Examples 1
Adopt same softener among the embodiment 1, same consumption, directly this softener is joined discongest the mixed slurry handled with defibrination (the broad-leaved slurry is 70:30 with needle slurry mass ratio, and with embodiment 1 in mix weight such as slurry) in, same processing mode is copied sheet then.
Through test, the paper fracture length that adopts the method to make is 2.32km.
By embodiment 1 and Comparative Examples 1 as seen, starching mass ratio at the broad-leaved slurry with needle is 70:30, the softener consumption is under 0.286% the situation of leaf wood over dry quality, the paper strength low (fracture length more small intensity is more low) that the paper strength that adopts method behaviour of the present invention to create manufactures paper with pulp out than the conventional way of employing, that is to say that the paper softness is good, the service efficiency that adopts method of the present invention can improve softener is described.
Embodiment 2
Adopt the softener of Bark Man, the softener consumption is 1.429% of broad-leaved wood fiber over dry quality, wherein the broad-leaved slurry is 70:30 with needle slurry mass ratio, the needle slurry is starched respectively through discongesting processing with broad-leaved, the quality of fiber percentage concentration is 5% when discongesting, the broad-leaved slurry changes through defibrination 1000 then, the needle slurry changes through defibrination 2500, the quality of fiber percentage concentration is 10% during defibrination, softener all joined in the broad-leaved slurry handle 5min, add the needle slurry then and mix with it, copy sheet after the mixing, sheet basis weight is 30g/m
2
Through test, the paper fracture length made from the method is 1.10km.
Comparative Examples 2
Adopt same softener among the embodiment 2, same consumption, directly this softener is joined discongest the mixed slurry handled with defibrination (the broad-leaved slurry is 70:30 with needle slurry mass ratio, and with embodiment 2 in mix weight such as slurry) in, same processing mode is copied sheet then.
Through test, the paper fracture length that adopts the method to make is 1.18km.
By embodiment 2 and Comparative Examples 2 as seen, starching mass ratio at the broad-leaved slurry with needle is 70:30, the softener consumption is under 1% the situation, the paper strength that adopts method behaviour of the present invention to create is lower than the paper strength that adopts conventional way to manufacture paper with pulp out, that is to say that softness is good, the service efficiency that adopts method of the present invention can improve softener is described.
Embodiment 3
Adopt the softener of Bark Man, the softener consumption is 1.429% of broad-leaved wood fiber quality, wherein the broad-leaved slurry is 70:30 with needle slurry mass ratio, the needle slurry is starched respectively through discongesting processing with broad-leaved, the quality of fiber percentage concentration is 5% when discongesting, and softener is all joined in the broad-leaved slurry handle 5min, adds the needle slurry then and mixes with it, copy sheet after the mixing, sheet basis weight is 30g/m
2
Through test, the paper fracture length made from the method is 1.01km.
Comparative Examples 3
Adopt same softener among the embodiment 3, same consumption, directly this softener is joined mixed slurry after discongesting (the broad-leaved slurry is 70:30 with needle slurry mass ratio, and with embodiment 2 in mixes weight such as slurry) in, processing mode is copied sheet then equally.
Through test, the paper fracture length that adopts the method to make is 1.10km.
By embodiment 2 and Comparative Examples 2 as seen, starching mass ratio at the broad-leaved slurry with needle is 70:30, the softener consumption is 1.429% of broad-leaved wood fiber quality, and in the absence through the defibrination processing, the paper strength that adopts method behaviour of the present invention to create is lower than the paper strength that adopts conventional way to manufacture paper with pulp out, that is to say that softness is good, the service efficiency that adopts method of the present invention can improve softener is described.
In addition, those skilled in the art also can make various modifications, interpolation and the replacement on other form and the details in claim of the present invention scope of disclosure and spirit.Certainly, these all should be included within the present invention's scope required for protection according to the variations such as various modifications, interpolation and replacement that spirit of the present invention is made.
Claims (8)
1. the preparation technology of a paper, it comprises the steps:
Softwood pulp and hardwood pulp are provided, and wherein the over dry mass ratio of hardwood pulp and softwood pulp is discongested softwood pulp and hardwood pulp respectively between 1 and 4;
Add softener in the hardwood pulp after discongest;
With the hardwood pulp that is added with softener with discongest after softwood pulp mix and obtain mixing slurry;
To mix slurry manufactures paper with pulp and makes paper.
2. the preparation technology of paper as claimed in claim 1, it is characterized in that: the mass percentage concentration of softwood pulp and hardwood pulp all is controlled to be 3%～15% when discongesting.
3. the preparation technology of paper as claimed in claim 1 is characterized in that: this technology also comprises carries out the step that defibrination is handled to the softwood pulp after discongesting, and carries out the step that defibrination is handled to discongesting the hardwood pulp that adds before the softener back.
4. the preparation technology of paper as claimed in claim 3 is characterized in that: the defibrination revolution that softwood pulp and hardwood pulp are carried out the defibrination treatment step respectively is 1000～6000 to be changeed.
5. the preparation technology of paper as claimed in claim 3 is characterized in that: the concentration of control softwood pulp and hardwood pulp is 5%～20% during defibrination.
6. the preparation technology of paper as claimed in claim 1, it is characterized in that: the addition of this softener is 0.001%～2% of broad-leaved wood fiber over dry quality.
7. the preparation technology of paper as claimed in claim 1, it is characterized in that: this softener is cationic quaternary amine resin.
8. the preparation technology of paper as claimed in claim 1, it is characterized in that: this technology also comprises the step that the hardwood pulp behind the softener is mixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310165061.9A CN103233380B (en) | 2013-05-07 | 2013-05-07 | The preparation technology of paper |
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| CN201310165061.9A CN103233380B (en) | 2013-05-07 | 2013-05-07 | The preparation technology of paper |
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| CN103233380A true CN103233380A (en) | 2013-08-07 |
| CN103233380B CN103233380B (en) | 2016-08-03 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105088863A (en) * | 2015-07-14 | 2015-11-25 | 山东太阳生活用纸有限公司 | Household paper and manufacturing process |
| CN107313284A (en) * | 2016-04-27 | 2017-11-03 | 上海东冠纸业有限公司 | A kind of suede sense of touch face tissue and preparation method thereof |
| CN107313283A (en) * | 2016-04-27 | 2017-11-03 | 上海东冠纸业有限公司 | A kind of preparation method of wettable water paper handkerchief |
| CN108720695A (en) * | 2018-05-30 | 2018-11-02 | 高尚朴 | A kind of pure wood pulp paper handkerchief of no added fluorescent whitening agent and preparation method thereof |
| CN109235125A (en) * | 2017-07-11 | 2019-01-18 | 金红叶纸业集团有限公司 | Paper for daily use and preparation method thereof |
| CN110409220A (en) * | 2018-04-28 | 2019-11-05 | 金红叶纸业集团有限公司 | A kind of preparation method of paper for daily use |
| CN110656532A (en) * | 2019-08-27 | 2020-01-07 | 湖州立方实业有限公司 | Process for making teaching and auxiliary material paper |
| CN110835454A (en) * | 2019-11-29 | 2020-02-25 | 陕西生益科技有限公司 | Prepreg, laminated board, metal foil-clad laminated board and printed circuit board |
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| CN1139468A (en) * | 1993-10-22 | 1997-01-01 | 普罗克特和甘保尔公司 | Multi-ply facial tissue paper product comprising biodegradable chemical softening compositions and binder materials |
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| CN102733225A (en) * | 2012-06-21 | 2012-10-17 | 卜祥生 | Production technology of all-wood-pulp unbleached ecological environmentally-friendly toilet paper |
| CN103015258A (en) * | 2012-12-25 | 2013-04-03 | 浙江晶鑫特种纸业有限公司 | Manufacturing process for macerative masking tape |
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| CN1128550A (en) * | 1993-06-03 | 1996-08-07 | 普罗克特和甘保尔公司 | Waterless self-emulsifiable chemical softening composition useful in fibrous cellulosic materials |
| CN1139468A (en) * | 1993-10-22 | 1997-01-01 | 普罗克特和甘保尔公司 | Multi-ply facial tissue paper product comprising biodegradable chemical softening compositions and binder materials |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105088863A (en) * | 2015-07-14 | 2015-11-25 | 山东太阳生活用纸有限公司 | Household paper and manufacturing process |
| CN107313284A (en) * | 2016-04-27 | 2017-11-03 | 上海东冠纸业有限公司 | A kind of suede sense of touch face tissue and preparation method thereof |
| CN107313283A (en) * | 2016-04-27 | 2017-11-03 | 上海东冠纸业有限公司 | A kind of preparation method of wettable water paper handkerchief |
| CN107313284B (en) * | 2016-04-27 | 2019-04-19 | 上海东冠纸业有限公司 | A kind of suede sense of touch face tissue and preparation method thereof |
| CN109235125A (en) * | 2017-07-11 | 2019-01-18 | 金红叶纸业集团有限公司 | Paper for daily use and preparation method thereof |
| CN110409220A (en) * | 2018-04-28 | 2019-11-05 | 金红叶纸业集团有限公司 | A kind of preparation method of paper for daily use |
| CN108720695A (en) * | 2018-05-30 | 2018-11-02 | 高尚朴 | A kind of pure wood pulp paper handkerchief of no added fluorescent whitening agent and preparation method thereof |
| CN110656532A (en) * | 2019-08-27 | 2020-01-07 | 湖州立方实业有限公司 | Process for making teaching and auxiliary material paper |
| CN110835454A (en) * | 2019-11-29 | 2020-02-25 | 陕西生益科技有限公司 | Prepreg, laminated board, metal foil-clad laminated board and printed circuit board |
| CN110835454B (en) * | 2019-11-29 | 2022-05-24 | 陕西生益科技有限公司 | Prepreg, laminated board, metal foil-clad laminated board and printed circuit board |
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| CN103233380B (en) | 2016-08-03 |
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