CN102797193A - Paper pulp processing method and coated paper manufacturing method - Google Patents
Paper pulp processing method and coated paper manufacturing method Download PDFInfo
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- CN102797193A CN102797193A CN2011101385756A CN201110138575A CN102797193A CN 102797193 A CN102797193 A CN 102797193A CN 2011101385756 A CN2011101385756 A CN 2011101385756A CN 201110138575 A CN201110138575 A CN 201110138575A CN 102797193 A CN102797193 A CN 102797193A
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Abstract
The invention discloses a paper pulp processing method. The paper pulp processing method comprises the following steps of: providing paper pulp; and adding composite cellulase into the paper pulp, and processing, wherein the composite cellulase is composite enzyme of cellulase and hemicellulase. The invention also provides a coated paper manufacturing method.
Description
Technical field
The invention belongs to the pulp and paper technology field, particularly a kind of pulp processing method of the water filtering performance that improves paper pulp and relate to the coated paper manufacturing approach of this pulp processing.
Background technology
At present, people increase the increasing demand of paper, cause problems such as paper making raw material shortage, energy deficiency and environmental pollution also outstanding day by day, and these problems are seriously restricting the development of paper industry.
Because timber resources is limited, people turn to sight leaf wood raw material such as the wide Eucalyptus of fast growth, growth area, yearning between lovers wood or grass class to make paper pulp gradually.Yet; The drainability of hardwood pulp and straw pulp is relatively poor; And the water filtering performance of paper pulp is a paper pulp one of the important indicator of performance of manufacturing paper with pulp; It is related to the water separation capability that paper pulp is located at wire-cloths etc., if the water filtering performance of paper pulp is not good, brings then for the follow-up process of manufacturing paper with pulp to yield poorly, the high inconvenience of energy consumption.
Summary of the invention
Therefore, be necessary to provide a kind of pulp processing method, to improve the water filtering performance of paper pulp.
A kind of pulp processing method comprises step: paper pulp is provided; And the adding complex cellulase is handled in said paper pulp, and said complex cellulase is the complex enzyme of cellulase and hemicellulase.
A kind of coated paper manufacturing approach comprises step: paper pulp is provided; In said paper pulp, add complex cellulase and handle, said complex cellulase is the complex enzyme of cellulase and hemicellulase; Paper pulp after the said processing manufactured paper with pulp on paper machine make body paper; And at the surface of said body paper formation coating layer.
Technical scheme provided by the invention adopts the complex cellulase pulp treatment, can improve the water filtering performance of paper pulp, when paper pulp is processed paper, can adopt the higher speed of a motor vehicle, obtain higher output, and cut down the consumption of energy.
Description of drawings
Fig. 1 is the sketch map of pulp processing method provided by the invention.
Fig. 2 is the sketch map of coated paper manufacturing approach provided by the invention.
The specific embodiment
To combine accompanying drawing and a plurality of embodiment that pulp processing method provided by the invention and the coated paper manufacturing approach that relates to this pulp processing are done further explain below.
See also Fig. 1, first embodiment of the invention provides a kind of pulp processing method, and it may further comprise the steps:
The first step provides paper pulp.Said paper pulp can be commercially available hardwood pulp, particularly, can be eucalyptus pulp, yearning between lovers wood pulp and weedtree hardwood pulp etc.Certainly, this paper pulp also can be embodied as straw pulp.
Second step added complex cellulase and handles in said paper pulp, said complex cellulase is the complex enzyme of cellulase and hemicellulase.
In the said complex cellulase, the suitable enzyme of cellulase and hemicellulase proportioning alive is 8: 1 to 4: 1, and the enzyme of said complex cellulase is lived and is 4800HCU/g.In the present embodiment, the consumption of said complex cellulase is 0.03 kilogram of oven dry stock to 0.15 per ton kilogram oven dry stock per ton.
When using above-mentioned complex cellulase that paper pulp is handled, the adjustment slurry is dense to be 3% to 10%, and adjustment pH condition is 6 to 9.5, maintains the temperature at 30 degrees centigrade to 60 degrees centigrade, and the processing time is 20 minutes to 90 minutes.Preferably, starching dense is 3% to 5%, and temperature remains on 40 degrees centigrade to 55 degrees centigrade, and the pH condition is 7 to 8, and the processing time is 30 minutes to 60 minutes.
Second embodiment of the invention provides a kind of pulp processing method, and it may further comprise the steps:
The first step provides paper pulp.Said paper pulp can be commercially available hardwood pulp, particularly, can be eucalyptus pulp, yearning between lovers wood pulp and weedtree hardwood pulp etc.Certainly, this paper pulp also can be embodied as straw pulp.
Second step, paper pulp is carried out defibrination handle, further fiber or the conduit fragment in the size degradation paper pulp makes it to diminish.
Conduit is the water conduction tissue in the broadleaf, and being connected by the end wall of the bigger tubulose cell of diameter forms, and is one of characteristic structure of broad-leaved wood.Guide-tube structure also exists in the grass class.Hardwood pulp or straw pulp are in slurrying; Because of the vessel cell swollen that is difficult to absorb water produces bulk and softening transform, under the mechanical jordaning effect, conduit is cut into by cutterhead easily has distinct form and certain rigidity (non-softness and brooming) conduit fragment; These fragment surface free radicals are less; In paper-making process, retain in paper conduit fragment and other fibers binding ability a little less than, cause very easily that in printing process paper is pulled up or falls a mao paper defects.Handle further through defibrination that size degradation conduit fragment makes it to diminish, reduce after the paper moulding paper and be pulled up a form and reduce, fall a mao phenomenon minimizing.
Can adopt equipment such as existing hollander, two mill, conical refiner or cylindrical jordan to carry out defibrination handles.
The 3rd step added complex cellulase and handles in said paper pulp, said complex cellulase is the complex enzyme of cellulase and hemicellulase.
In the said complex cellulase, the suitable enzyme of cellulase and hemicellulase proportioning alive is 8: 1 to 4: 1, and the enzyme of said complex cellulase is lived and is 4800HCU/g.In the present embodiment, the consumption of said complex cellulase is 0.03 kilogram of oven dry stock to 0.15 per ton kilogram oven dry stock per ton.
When using above-mentioned complex cellulase that paper pulp is handled, the adjustment slurry is dense to be 3% to 10%, and adjustment pH condition is 6 to 9.5, maintains the temperature at 30 degrees centigrade to 60 degrees centigrade, and the processing time is 20 minutes to 90 minutes.Preferably, starching dense is 3% to 5%, and temperature remains on 40 degrees centigrade to 55 degrees centigrade, and the pH condition is 7 to 8, and the processing time is 30 minutes to 60 minutes.
Third embodiment of the invention provides a kind of pulp processing method, and it may further comprise the steps:
The first step provides paper pulp.Said paper pulp is commercially available hardwood pulp, particularly, can be eucalyptus pulp, yearning between lovers wood pulp and weedtree hardwood pulp etc.Certainly, this paper pulp also can be embodied as straw pulp.
In second step, in said paper pulp, add cellulase and carry out preliminary treatment.
Said cellulase is preferably purity and is higher than 98.5% restriction endonuclease, and its enzyme is lived and is 4500ECU/g.In the present embodiment, the consumption of said cellulase is 0.06 kilogram of oven dry stock to 0.15 per ton kilogram oven dry stock per ton.
When using above-mentioned cellulase that paper pulp is carried out preliminary treatment, the adjustment slurry is dense to be 3% to 10%, and adjustment pH condition is 6 to 8, maintains the temperature at 30 degrees centigrade to 60 degrees centigrade, and the processing time is 1 hour to 3 hours.Preferably, starching dense is 3% to 5%, and temperature remains on 40 degrees centigrade to 55 degrees centigrade, and the pH condition is 7 to 8, and the processing time is 1.5 hours to 2 hours.
There is the conduit fragment problems like described hardwood pulp of above-mentioned second embodiment or straw pulp; In above-mentioned processing procedure, cellulase acts on fiber and the conduit fragment in the paper pulp, makes that the cellulose of fiber and catheter surface takes place by the mild hydrolysis, hole increases; Thereby make water strengthen to the run-inflation effect of fiber and conduit; Be beneficial to improve wire-dividing broom purification in the follow-up defibrination process, increase and copy paper intensity, and strengthen the size degradation effect of defibrination conduit.
The 3rd step, said paper pulp is carried out defibrination handle, further fiber or the conduit fragment in the size degradation paper pulp makes it to diminish.
The defibrination processing can make the conduit fragment of wood pulp obtain further size degradation and diminish.
Can adopt equipment such as existing hollander, two mill, conical refiner or cylindrical jordan to carry out defibrination handles.
Because by the abundant swollen of water, fiber more is prone to defibrination brooming in above-mentioned second step for fiber in the paper pulp and conduit fragment, for the demand reduction of defibrination power; The bulkiness that the conduit fragment is inner and the property of softening improve, and more are prone to during defibrination tear and fester, and the size degradation effect improves and the external fibrillation degree also improves relatively.Paper pulp through second step process can obviously reduce defibrination time and power consumption; And; The tensile strength of pulp, pop strength, cohesive force and surface strength all obtain bigger raising, particularly, on average can improve 12% to 20%; The paper that makes after paper pulp is manufactured paper with pulp has benefited from cellulase to the promotion of the size degradation of conduit fiber and the raising of surface strength, and paper is pulled up or falls mao phenomenon and can reduce by 50%.
The 4th step added complex cellulase and handles in the paper pulp behind defibrination, said complex cellulase is the complex enzyme of cellulase and hemicellulase.
In the said complex cellulase, the suitable enzyme of cellulase and hemicellulase proportioning alive is 8: 1 to 4: 1, and the enzyme of said complex cellulase is lived and is 4800HCU/g.In the present embodiment, the consumption of said complex cellulase is 0.03 kilogram of oven dry stock to 0.15 per ton kilogram oven dry stock per ton.
When using above-mentioned complex cellulase that paper pulp is handled, the adjustment slurry is dense to be 3% to 10%, and adjustment pH condition is 6 to 9.5, maintains the temperature at 30 degrees centigrade to 60 degrees centigrade, and the processing time is 20 minutes to 90 minutes.Preferably, starching dense is 3% to 5%, and temperature remains on 40 degrees centigrade to 55 degrees centigrade, and the pH condition is 7 to 8, and the processing time is 30 minutes to 60 minutes.
In the slurry processing procedure of above-mentioned first, second and third embodiment; Complex cellulase acts on the high microfibre surface of accessibility; The microfibre that has low-crystallinity and high water retention value in the hydrolyzable fiber fines, the water retention characteristic of reduction fiber fines component, simultaneously; Complex cellulase is in the slight effect of peeling off of main fibre surface generation of brooming; Only hydrolysis with cut off the amorphous hemicellulose chain expose, thereby reduce the effect between paper pulp and the water, improve the slurry water filtering performance.Further; The cellulase of complex cellulase and hemicellulase all comprise restriction endonuclease and excision enzyme; The high amorphous regions of said restriction endonuclease hydrolysis microfibre, cellulolytic original hase and the non-reduced base end gone back of said excision enzyme impels main water-soluble colloid mass degradations such as microfibre; Reduce the effect between fiber and the water, improved the water filtering performance of pulp.
See also Fig. 2, the present invention also provides a kind of coated paper manufacturing approach, and this coated paper manufacturing approach also comprises except the step that first, second and third embodiment provides respectively: the paper pulp after will handling is manufactured paper with pulp on paper machine and is made body paper; And at the surface of said body paper formation coating layer.
Said coating layer is included in said body paper surface and carries out the oxidized starch top sizing, the single face resin added be 3 the gram every square metre to 4 the gram every square metre.
Form behind the coating layer raising of getting back of resulting coated paper intensity, and paper pulls up a little and falls a mao phenomenon and is able to subdue.
Technical scheme provided by the invention adopts the complex cellulase pulp treatment, can improve the water filtering performance of paper pulp, when paper pulp is processed paper, can adopt the higher speed of a motor vehicle, obtain higher output, and cut down the consumption of energy.
Further, the technical scheme of above-mentioned second and third embodiment embodiment also has following advantage: need not to take into account refine can obtain pulp strength and water filtering performance to the influence of Pulp Drainage Properties balance.That is to say, can guarantee under the slurry water filtering performance prerequisite paper pulp to be carried out defibrination,, reduce the size of conduit fragment, promote magma intensity and copy paper paper intensity, reduce paper and pull up a little and fall a mao phenomenon to promote action effect to the conduit size degradation.
Especially the technical scheme that provides of third embodiment of the invention; To the hardwood pulp processing of (comprising eucalyptus pulp, yearning between lovers wood pulp and weedtree hardwood pulp), to keep under slurry C SF (freedom) and the quick water filtering performance condition, paper pulp handmade paper paper is pulled up and reduces more than 50%; Have more obviously with CSF magma intensity simultaneously and improve; Improve 12 ~ 15%, copy behind the paper body paper and be pulled up through paper behind the top sizing and reduce more than 38%, body paper intensity slightly improves; After the body paper applying glue more in addition coating composition make coated paper, then the coated paper paper is pulled up or falls a mao phenomenon and eliminate basically.
It is understandable that, for the person of ordinary skill of the art, can make other various corresponding changes and distortion by technical conceive according to the present invention, and all these change the protection domain that all should belong to claim of the present invention with distortion.
Claims (17)
1. pulp processing method comprises step:
Paper pulp is provided; And
In said paper pulp, add complex cellulase and handle, said complex cellulase is the complex enzyme of cellulase and hemicellulase.
2. pulp processing method as claimed in claim 1 is characterized in that: the cellulase of said complex cellulase and hemicellulase all comprise restriction endonuclease and excision enzyme.
3. pulp processing method as claimed in claim 1 is characterized in that, the suitable enzyme of said cellulase and hemicellulase proportioning alive is 8:1 to 4:1.
4. pulp processing method as claimed in claim 1 is characterized in that, the enzyme of said complex cellulase is lived and is 4800HCU/g.
5. pulp processing method as claimed in claim 1 is characterized in that, the consumption of said complex cellulase is 0.03 kilogram of oven dry stock to 0.15 per ton kilogram oven dry stock per ton.
6. pulp processing method as claimed in claim 1 is characterized in that, the condition of handling toward the said complex cellulase of the interior adding of said paper pulp does; Starch dense 3% to 10%; 30 degrees centigrade to 60 degrees centigrade of temperature, the pH condition is 6 to 9.5, the processing time is 20 minutes to 90 minutes.
7. pulp processing method as claimed in claim 6 is characterized in that, the condition of handling toward the said complex cellulase of the interior adding of said paper pulp does; Starch dense 3% to 5%; 40 degrees centigrade to 55 degrees centigrade of temperature, the pH condition is 7 to 8, the processing time is 30 minutes to 60 minutes.
8. like each described pulp processing method of claim 1 to 7, it is characterized in that, before the said complex cellulase of adding is handled in said paper pulp, also comprise paper pulp is carried out the defibrination processed steps.
9. pulp processing method as claimed in claim 8 is characterized in that, before said paper pulp being carried out the defibrination processing, also comprises toward the interior cellulase that adds of said paper pulp and carries out pretreated step.
10. pulp processing method as claimed in claim 9 is characterized in that, is that purity is higher than 98.5% restriction endonuclease said paper pulp being carried out the cellulase that defibrination adds in the said paper pulp before handling.
11. pulp processing method as claimed in claim 9 is characterized in that, living at the enzyme that said paper pulp is carried out the cellulase that defibrination adds in the said paper pulp before handling is 4500HCU/g.
12. pulp processing method as claimed in claim 9 is characterized in that, is 0.06 kilogram of oven dry stock to 0.15 per ton kilogram oven dry stock per ton at the consumption that said paper pulp is carried out the cellulase that defibrination adds in the said paper pulp before handling.
13. pulp processing method as claimed in claim 9 is characterized in that, adds cellulase in the said paper pulp and carries out pretreated condition and do, starch dense 3% to 10%, 30 degrees centigrade to 60 degrees centigrade of temperature, the pH condition is 6 to 8, the processing time is 1 hour to 3 hours.
14. pulp processing method as claimed in claim 13 is characterized in that, carries out pretreated condition toward the interior adding of said paper pulp cellulase to do; Starch dense 3% to 5%; 40 degrees centigrade to 55 degrees centigrade of temperature, the pH condition is 7 to 8, the processing time is 1.5 hours to 2 hours.
15. a coated paper manufacturing approach comprises step:
Paper pulp is provided;
In said paper pulp, add complex cellulase and handle, said complex cellulase is the complex enzyme of cellulase and hemicellulase;
Paper pulp after the said processing manufactured paper with pulp on paper machine make body paper; And
Surface at said body paper forms coating layer.
16. coated paper manufacturing approach as claimed in claim 15 is characterized in that, forms coating layer through carry out the oxidized starch applying glue on said body paper surface, the consumption of said oxidized starch is that every square metre of 3 gram are to every square metre of 4 gram.
17. like claim 15 or 16 described coated paper manufacturing approaches, it is characterized in that, before the said complex cellulase of adding is handled in said paper pulp, also comprise toward the interior cellulase that adds of said paper pulp and carry out preliminary treatment and further defibrination processed steps.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110138575.6A CN102797193B (en) | 2011-05-26 | 2011-05-26 | Paper pulp processing method and coated paper manufacturing method |
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| CN201110138575.6A CN102797193B (en) | 2011-05-26 | 2011-05-26 | Paper pulp processing method and coated paper manufacturing method |
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| CN102797193A true CN102797193A (en) | 2012-11-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105178088A (en) * | 2015-08-10 | 2015-12-23 | 天津科技大学 | Method for preparing water absorbent fiber |
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| US5725732A (en) * | 1994-11-18 | 1998-03-10 | P. H. Glatfelter Company | Process for treating hardwood pulp with an enzyme mixture to reduce vessel element picking |
| CN100390354C (en) * | 2006-02-28 | 2008-05-28 | 山东轻工业学院 | Swlfate wood-pulp enzyme-method modifying process |
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2011
- 2011-05-26 CN CN201110138575.6A patent/CN102797193B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5725732A (en) * | 1994-11-18 | 1998-03-10 | P. H. Glatfelter Company | Process for treating hardwood pulp with an enzyme mixture to reduce vessel element picking |
| CN100390354C (en) * | 2006-02-28 | 2008-05-28 | 山东轻工业学院 | Swlfate wood-pulp enzyme-method modifying process |
Non-Patent Citations (3)
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| DAVID IBARRA等: "Combination of alkaline and enzymatic treatments as a process for upgrading sisal paper-grade pulp to dissolving-grade pulp", 《BIORESOURCE TECHNOLOGY》 * |
| 汤振江等: "纤维素/半纤维素酶配合漆酶预处理马尾松未漂磨石磨木浆的研究", 《林产化工通讯》 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105178088A (en) * | 2015-08-10 | 2015-12-23 | 天津科技大学 | Method for preparing water absorbent fiber |
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