CN103233380B - The preparation technology of paper - Google Patents
The preparation technology of paper Download PDFInfo
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- CN103233380B CN103233380B CN201310165061.9A CN201310165061A CN103233380B CN 103233380 B CN103233380 B CN 103233380B CN 201310165061 A CN201310165061 A CN 201310165061A CN 103233380 B CN103233380 B CN 103233380B
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Abstract
The preparation technology of a kind of paper, it comprises the steps: to provide softwood pulp and hardwood pulp, and wherein the absolute dry mass ratio of hardwood pulp and softwood pulp is between 1 and 4, discongests softwood pulp and hardwood pulp respectively；Adding softening agent in hardwood pulp after discongesting, the addition of this softening agent is the 1.429%～2% of broad-leaved wood fiber absolute dry mass；By be added with the hardwood pulp of softening agent be not added with softening agent completely discongest after softwood pulp be mixed to get and mix slurry；Mixing slurry is manufactured paper with pulp prepared paper.The technique of the present invention can improve the service efficiency of softening agent, reduces the usage amount of softening agent, reduces softening agent residual quantity in white-water system.
Description
Technical field
The present invention relates to the preparation technology of a kind of paper.
Background technology
Along with consumer's lifting to paper for daily use pliability demand, the addition that result in paper grade (stock) softening agent is more and more higher, so on the one hand, the cost of investment of papermaking chemical medicine can be increased, on the other hand may result in being excessively used of paper grade (stock) softening agent, and the softening agent being excessively used can remain in white-water system, affect the electric charge of white-water system so that the utilization rate of other paper grade (stock) chemical medicine reduces, and causes vicious cycle.
Summary of the invention
In view of this, it is necessary to provide the preparation technology of a kind of paper, it can preferably play the service efficiency of softening agent, reduces the usage amount of softening agent.
The preparation technology of a kind of paper, it comprises the steps:
Thering is provided softwood pulp and hardwood pulp, wherein the absolute dry mass ratio of hardwood pulp and softwood pulp is between 1 and 4, discongests softwood pulp and hardwood pulp respectively；
Adding softening agent in hardwood pulp after discongesting, the addition of this softening agent is the 1.429%～2% of broad-leaved wood fiber absolute dry mass；
By be added with the hardwood pulp of softening agent be not added with softening agent completely discongest after softwood pulp be mixed to get and mix slurry；
Mixing slurry is manufactured paper with pulp prepared paper.
The technique of the present invention can improve the service efficiency of softening agent, reduces the usage amount of softening agent, reduces softening agent residual quantity in white-water system.
Detailed description of the invention
The preparation technology of the paper of the present invention, it comprises the steps:
(1) providing softwood pulp and hardwood pulp, wherein the absolute dry mass ratio of hardwood pulp and softwood pulp is between 1 and 4, discongests softwood pulp and hardwood pulp respectively.
Discongesting step and use fluffer, the mass percentage concentration preferably controlling softwood pulp and hardwood pulp when discongesting is respectively 3%～15%, and it is preferable that this concentration range carries out discongesting effect.
During discongesting, fiber is in addition to being subject to shearing, rubbing with the effect of combing, simultaneously the cell wall of fiber be also subjected to displacement, modification with the phenomenon such as rupture thus the swollen that absorbs water, produce fibrillating, paper pulp is made to have flexibility, plasticity, also make to come out in cellulose molecular chain more hydroxyl, improves the adhesion between fiber.
Softwood pulp and hardwood pulp after discongesting carry out defibrination process the most respectively.Defibrination processes the defibrination revolution (1000～6000 turns) using routine of step.The mass percentage concentration preferably controlling softwood pulp and hardwood pulp during defibrination is 5%～20%.It is optional step that this defibrination processes step, can not carry out.Defibrination can promote fiber wire-dividing broom purification, and the intensity of defibrination mainly impact slurry and freedom, if do not specially required intensity and freedom, defibrination can not be carried out, or substitute by other mode, such as with drying strengthening agent, or make long fine amount in slurry more.
(2) hardwood pulp after discongesting or add softening agent in not only having carried out discongesting but also carried out the hardwood pulp of defibrination, the addition of this softening agent is the 0.001%～2% of broad-leaved wood fiber absolute dry mass.Typically manufacturing paper with pulp paper, the addition of softening agent is the 0.0005%-2% of the total absolute dry mass of fiber.The addition of softening agent of the present invention belongs to the normal ranges of softening agent addition.Adding the softwood pulp after softening agent can make softening agent preferably mix homogeneously with fiber by the device of agitator or static mixer etc.
This softening agent can be the conventional use of all kinds of softening agents of field of papermaking, and cationic quaternary amine resin is preferably used.
(3) mix homogeneously with the softwood pulp after above-mentioned discongesting obtain mixing slurry by being added with the hardwood pulp of softening agent.
(4) mixing slurry is manufactured paper with pulp prepared paper.
Concrete, if manufacture paper with pulp is paper for daily use, can be by preparing paper after forming net dehydration, molding, squeezing, drying and other steps.
It should be understood that the mixing slurry of the present invention is also added with the papermaking chemical of some routines, such as drying strengthening agent, wet strength agent, CMC, retention agent, defoamer, filler etc..
Needle-leaved wood fibre (long fibre) is different with the Anatomical characteristics of broad-leaved wood fiber (chopped fiber), the length of broad-leaved wood fiber is far below needle-leaved wood fibre, and the length of fiber has close relationship with finally becoming the pliability of paper, and the long fibre of same quality and chopped fiber, the hydroxyl quantity on long fibre surface is more than leaf wood, say, that the point that can provide bond is the most.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, so adds the softness that a small amount of softening agent just can reach the highest.The length of needle-leaved wood fibre is longer, and the hydroxyl quantity of fiber surface is more, and the paper strength of formation is high, and pliability is relatively low, so needs to add substantial amounts of softening agent to the bond destroying between fiber, strengthens soft effect with this.
The paper making process of the present invention, for the difference of needle-leaved wood fibre Yu broad-leaved wood fiber, mixes with broad-leaved wood fiber in advance by softening agent, is mixed with broad-leaved wood fiber by needle-leaved wood fibre and carries out copy paper.So in the case of the softening agent using isodose makes an addition to equal slurry, the wet strength of paper prepared by the adding method (softening agent makes an addition in hardwood pulp in advance, then mixes with softwood pulp) of the present invention is higher than the pliability of the paper using tradition adding method (softening agent directly makes an addition in the mixing slurry of needlebush and leaf wood) to prepare.The paper making process of the present invention, can improve the service efficiency of softening agent, reduces the usage amount of softening agent, reduces softening agent residual quantity in white-water system.
Below by embodiment, the present invention is specifically described.
Embodiment 1
Use the softening agent of Bark Man, softening agent consumption is the 0.286% of broad-leaved wood fiber absolute dry mass, wherein broad-leaved slurry is 70:30 with needle slurry mass ratio, needle slurry is starched respectively through discongesting process with broad-leaved, when discongesting, the mass percentage concentration of fiber is 5%, then broad-leaved is starched through defibrination 1000 turns, needle is starched through defibrination 2500 turns, during defibrination, the mass percentage concentration of fiber is 10%, softening agent is all joined in broad-leaved slurry and process 5min, being subsequently adding needle slurry to be mixed with, handsheet after mixing, sheet basis weight is 30g/m2.
Through test, a length of 2.06km of paper brisement made by the method.
Comparative example 1
Use softening agent same in embodiment 1, same consumption, directly joins this softening agent and discongests in the mixed slurry (broad-leaved slurry is 70:30 with needle slurry mass ratio, and mixes the weight such as slurry in embodiment 1) processed with defibrination, same processing mode, then handsheet.
Through test, use a length of 2.32km of paper brisement that the method is made.
From embodiment 1 and comparative example 1, starching mass ratio at broad-leaved slurry and needle is 70:30, in the case of softening agent consumption is the 0.286% of leaf wood absolute dry mass, use the paper strength that the method behaviour of the present invention creates than the paper strength low (fracture length more small intensity is the lowest) using Normal practice to manufacture paper with pulp out, that is sheet softness can be good, and the service efficiency using the method for the present invention can improve softening agent is described.
Embodiment 2
Use the softening agent of Bark Man, softening agent consumption is the 1.429% of broad-leaved wood fiber absolute dry mass, wherein broad-leaved slurry is 70:30 with needle slurry mass ratio, needle slurry is starched respectively through discongesting process with broad-leaved, when discongesting, the mass percentage concentration of fiber is 5%, then broad-leaved is starched through defibrination 1000 turns, needle is starched through defibrination 2500 turns, during defibrination, the mass percentage concentration of fiber is 10%, softening agent is all joined in broad-leaved slurry and process 5min, being subsequently adding needle slurry to be mixed with, handsheet after mixing, sheet basis weight is 30g/m2.
Through test, a length of 1.10km of paper brisement made by the method.
Comparative example 2
Use softening agent same in embodiment 2, same consumption, directly joins this softening agent and discongests in the mixed slurry (broad-leaved slurry is 70:30 with needle slurry mass ratio, and mixes the weight such as slurry in embodiment 2) processed with defibrination, same processing mode, then handsheet.
Through test, use a length of 1.18km of paper brisement that the method is made.
From embodiment 2 and comparative example 2, starching mass ratio at broad-leaved slurry and needle is 70:30, in the case of softening agent consumption is 1%, the paper strength using the method behaviour of the present invention to create is lower than the paper strength using Normal practice to manufacture paper with pulp out, that is softness is good, and the service efficiency using the method for the present invention can improve softening agent is described.
Embodiment 3
Use the softening agent of Bark Man, softening agent consumption is the 1.429% of broad-leaved wood fiber quality, wherein broad-leaved slurry is 70:30 with needle slurry mass ratio, needle slurry is starched respectively through discongesting process with broad-leaved, when discongesting, the mass percentage concentration of fiber is 5%, is all joined by softening agent in broad-leaved slurry and processes 5min, is subsequently adding needle slurry and is mixed with, handsheet after mixing, sheet basis weight is 30g/m2.
Through test, a length of 1.01km of paper brisement made by the method.
Comparative example 3
Use softening agent same in embodiment 3, same consumption, directly joins in the mixed slurry after discongesting (broad-leaved slurry is 70:30 with needle slurry mass ratio, and mixes the weight such as slurry in embodiment 2) by this softening agent, same processing mode, then handsheet.
Through test, use a length of 1.10km of paper brisement that the method is made.
From embodiment 2 and comparative example 2, starching mass ratio at broad-leaved slurry and needle is 70:30, softening agent consumption is the 1.429% of broad-leaved wood fiber quality, and not in the case of defibrination processes, the paper strength using the method behaviour of the present invention to create is lower than the paper strength using Normal practice to manufacture paper with pulp out, that is softness is good, and the service efficiency using the method for the present invention can improve softening agent is described.
It addition, those skilled in the art also can make the various amendments in other form and details in the claims in the present invention scope of disclosure and spirit, add and replace.Certainly, these various amendments made according to present invention spirit, add and the change such as replacement, within all should being included in scope of the present invention.
Claims (6)
1. a preparation technology for paper, it comprises the steps:
Thering is provided softwood pulp and hardwood pulp, wherein the absolute dry mass ratio of hardwood pulp and softwood pulp is between 1 and 4, is discongested softwood pulp and hardwood pulp by fluffer respectively；
Hardwood pulp after discongesting adds softening agent；
Softwood pulp after being added with the hardwood pulp of softening agent and discongest is mixed to get and mixes slurry；
Mixing slurry is manufactured paper with pulp prepared paper；
Wherein, when discongesting, the mass percentage concentration of softwood pulp and hardwood pulp all controls to be 3%～15%；
Wherein, the addition of described softening agent is the 0.286%～1.429% of broad-leaved wood fiber absolute dry mass.
2. the preparation technology of paper as claimed in claim 1, it is characterised in that: this technique also includes the step that the softwood pulp after discongesting carries out defibrination process, and the hardwood pulp before adding softening agent after discongesting carries out the step of defibrination process.
3. the preparation technology of paper as claimed in claim 2, it is characterised in that: the defibrination revolution that softwood pulp and hardwood pulp carry out defibrination process step respectively is 1000～6000 turns.
4. the preparation technology of paper as claimed in claim 2, it is characterised in that: the concentration controlling softwood pulp and hardwood pulp during defibrination is 5%～20%.
5. the preparation technology of paper as claimed in claim 1, it is characterised in that: this softening agent is cationic quaternary amine resin.
6. the preparation technology of paper as claimed in claim 1, it is characterised in that: this technique also includes the step that the hardwood pulp after softening agent is stirred mixing.
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| 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 CN103233380A (en) | 2013-08-07 |
| CN103233380B true CN103233380B (en) | 2016-08-03 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105088863B (en) * | 2015-07-14 | 2017-09-29 | 山东太阳生活用纸有限公司 | A kind of paper for daily use and manufacturing process |
| 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 |
| CN109235125B (en) * | 2017-07-11 | 2022-09-06 | 金红叶纸业(南通)有限公司 | Household paper 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 |
| 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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| 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 |
| CN1217038A (en) * | 1994-09-20 | 1999-05-19 | 普罗克特和甘保尔公司 | Paper products contg. biodegradable vegetable oil based chemical softening composition |
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| 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP1004703A1 (en) * | 1998-11-24 | 2000-05-31 | The Procter & Gamble Company | Multi-ply tissue, and process for its manufacture |
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Patent Citations (7)
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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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