CN103952940B - The manufacture method of paper - Google Patents
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- CN103952940B CN103952940B CN201410183084.7A CN201410183084A CN103952940B CN 103952940 B CN103952940 B CN 103952940B CN 201410183084 A CN201410183084 A CN 201410183084A CN 103952940 B CN103952940 B CN 103952940B
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Abstract
The invention discloses the manufacture method of a kind of paper, this manufacture method includes: prepare certain density slurry；In slurry, add the ultra-high molecular weight cationic polyacrylamide that molecular weight is 8000K 30000KDa, after mix homogeneously, form the first mixture making pulp surface cover positive charge；In the first mixture, add the certain density filler with negative charge, after mix homogeneously, form the second mixture that slurry, ultra-high molecular weight cationic polyacrylamide and filler mutually wrap up；The 3rd mixture is formed after adding the filler flocculant that molecular weight is 3000K 10000KDa in the second mixture；With slurry with the 3rd mixture and make paper.By the way, the physical strength indexs such as the paper that the present invention enables to prepare is cohesion, folding promote.
Description
Technical field
The present invention relates to the manufacturing technology field of paper, particularly relate to the manufacture method of a kind of paper.
Background technology
Papermaking filler is a kind of coloring earth or synthetic material, for improving the performance of paper, higher improves paper
Use require and save slurry sizing cost.Filler conventional in paper industry includes: calcium carbonate, Pulvis Talci, Kaolin
With titanium dioxide etc..Wherein calcium carbonate due to its whiteness high, even particle distribution, it is possible to be obviously improved the opacity of paper,
Whiteness and printing adaptability etc., make papermaking filler ideal in paper-making process.
The main purpose adding filler in paper is to improve the whiteness of paper, opacity and printability, paper plant simultaneously
The consumption increasing filler being always to try to is to reduce cost.But, along with filler adds the increase of tret, first in the formation of page
During destroy interfibrous adhesion, make the intensity of paper decline, during paper printing hair and powder dropping phenomenon aggravation.For
Also ensure that the quality problem of paper while promoting greyness of paper, we typically can use filler modified with increase filler and
Binding ability between fiber.Generally using starch at present, filler is first carried out at cladding by polymer substance or guar gum etc.
Reason, the filler after processing adds in slurry, and reinforcement filler and interfibrous combination, this method can improve paper printing
During hair and powder dropping phenomenon, but then need to filler add before first filler is carried out cladding process, add the complexity of technique
Property.The filler processed in this way adds simultaneously after, also bring along paper anti-tensile, cohesion, under the physical strength index such as folding
Fall.
Accordingly, it is desirable to provide the manufacture method of a kind of paper, to solve the problems referred to above.
Summary of the invention
The technical problem that present invention mainly solves is to provide the manufacture method of a kind of paper, it is possible to solve paper in prior art
Anti-tensile, cohesion, technical problem that the physical strength index such as folding is low.
For solving above-mentioned technical problem, the technical scheme that the present invention uses is: provide the manufacture method of a kind of paper,
This manufacture method includes: prepare certain density slurry；In slurry, add the superelevation that molecular weight is 8000K-30000KDa divide
Son amount PAMC, forms the first mixture making pulp surface cover positive charge after mix homogeneously；Mix to first
Compound adds the certain density filler with negative charge, after mix homogeneously, forms slurry, super high molecular weight cation poly-third
The second mixture that acrylamide and filler mutually wrap up；Adding molecular weight in the second mixture is 3000K-10000KDa's
The 3rd mixture is formed after filler flocculant；With slurry with the 3rd mixture and make paper.
Wherein, the molecular weight of ultra-high molecular weight cationic polyacrylamide is 10000K-15000KDa.
Wherein, the charge density of ultra-high molecular weight cationic polyacrylamide is 5-15meq/g.
Wherein, filler flocculating agent molecule amount is 6000K-10000KDa.
Wherein, the charge density of filler flocculant is 10-30meq/g.
Wherein, filler flocculant is acrylamide and polyacrylic acid or the copolymer of polyacrylic acid derivative.Wherein gather
Acrylic acid derivative is: polymethyl acrylate, polyethyl acrylate, polyacrylic acid dimethylaminoethyl or polyacrylic acid diformazan
Amino ethyl ester Methochloride.
Wherein, the concentration of the slurry of preparation is 0.8-6.5%, and the concentration of filler is 10-68%, super high molecular weight cation
The addition of polyacrylamide is 0.5-5Kg/T filler, and the absolute dry mass of slurry and filler ratio is for 1:02-1:2.0, and filler flocculates
The addition of agent is 0.5-4.5Kg/T filler.
Wherein, slurry be chemistry softwood pulp, chemistry hardwood pulp, BCTMP and APMP in one or two kinds of and
Slurry mixed above.
Wherein, at least during filler is grinding calcium carbonate, winnofil, Kaolin, Pulvis Talci or titanium dioxide
Kind.
Wherein, with slurry with the 3rd mixture and make paper step particularly as follows: by the 3rd mixture with other two kinds not
Add chemicals after being same as the slurry material mixing of slurry, then make paper.
The invention has the beneficial effects as follows: be different from the situation of prior art, the present invention utilizes molecular weight 8000K-
Electrostatic attraction between ultra-high molecular weight cationic polyacrylamide and the slurry of 30000KDa and the poly-effect of bridging wadding, surpass this
High molecular weight cation polyacrylamide mixes with slurry, makes pulp surface cover one layer of positive charge, strengthens having negative electricity
The sucking action of the filler of lotus so that slurry and filler form a filler slurry having electrostatic attraction and bridging wadding to gather and be combined
Body, and this species complex has the strongest anti-shear ability.Utilize ultra-high molecular weight cationic polyacrylamide both can increase
Add interfibrous junction point in slurry and also there is electrostatic attraction and the poly-effect of bridging wadding, can preferably reinforcement filler and fiber
Between adhesion so that the paper prepared is cohesion, the physical strength index such as folding promotes.
Accompanying drawing explanation
Fig. 1 is the flow chart of the paper manufacture method of first embodiment of the invention；
Fig. 2 be the present invention be the slurry line schematic flow sheet of paper machine.
Detailed description of the invention
The present invention will be described in detail with embodiment below in conjunction with the accompanying drawings.
Refer to the flow chart that Fig. 1, Fig. 1 are the paper manufacture methods of first embodiment of the invention.In the present embodiment, paper
The manufacture method opened comprises the following steps:
Step S11: prepare certain density slurry.
In step s 11, it is preferable that the concentration of the slurry of preparation is 0.8-6.5%.Slurry is chemistry softwood pulp, change
Learn the one in hardwood pulp, BCTMP (bleached chemical thermomechanical pulp) and APMP (APMP) or
Two kinds and slurry mixed above.
Step S12: adding molecular weight in slurry is 8000K-30000KDa ultra-high molecular weight cationic polyacrylamide,
The first mixture making pulp surface cover positive charge is formed after mix homogeneously.
In step s 12, the molecular weight of ultra-high molecular weight cationic polyacrylamide is more preferably 10000K-
15000KDa.The addition of ultra-high molecular weight cationic polyacrylamide is 0.5-5Kg/T filler, i.e. super high molecular weight cation
Polyacrylamide addition is pressed the over dry composition accounting of filler and is calculated, accordingly, it would be desirable to obtain filling out of budget in subsequent step in advance
Material addition, then calculates the addition of ultra-high molecular weight cationic polyacrylamide.The over dry composition correspondence of filler per ton surpasses
The addition of high molecular weight cation polyacrylamide is 0.5-5Kg, such as, if the filler added in subsequent step is 1 ton,
In this step, addition is 0.5-5Kg, and other numerical value are by that analogy.Preferably, ultra-high molecular weight cationic polyacrylamide
Charge density is 5-15meq/g.
Step S13: add the certain density filler with negative charge in the first mixture, forms slurry after mix homogeneously
The second mixture that material, ultra-high molecular weight cationic polyacrylamide and filler mutually wrap up.
In step s 13, it is preferable that first filler is carried out dispersion process and avoids filler to lump, after preferably dispersion processes
Packing density be 10-68%.The absolute dry mass of slurry and filler is than for 1:0.2-1:2.0.Filler is grinding calcium carbonate, precipitation
At least one in calcium carbonate, Kaolin, Pulvis Talci or titanium dioxide.In the present embodiment, filler preferably grinds carbonic acid
Calcium, winnofil or the mixture of both arbitrary proportions mixing.
Step S14: form the after adding the filler flocculant that molecular weight is 3000K-10000KDa in the second mixture
Three mixture.
In step S14, the molecular weight of filler flocculant is more preferably 6000K-10000KDa, the electricity of filler flocculant
Lotus density is preferably 10-30meq/g.The addition of filler flocculant is 0.5-4.5Kg/T filler, and the over dry of filler the most per ton becomes
The addition dividing corresponding filler flocculant is 0.5-4.5Kg.In the present embodiment, filler flocculant is acrylamide and poly-third
Olefin(e) acid or the copolymer of polyacrylic acid derivative.This polyacrylic acid derivative can be polymethyl acrylate, polyacrylic acid second
Ester, polyacrylic acid dimethylaminoethyl or polyacrylic acid dimethylaminoethyl Methochloride etc..Preferably, the 3rd mixture
After 100 eye mesh screens filter, turbidity controls at below 3000NTU.
Step S15: with slurry with the 3rd mixture and make paper.
In step S15, with slurry with the 3rd mixture and make being preferably a step of paper and include: by the 3rd mixture with
Other two kinds of slurry material being different from slurry add chemicals after mixing, and then make paper.Manufacture method is preferably manufactured paper with pulp.
Such as, if the slurry through above-mentioned process is chemistry softwood pulp, other two kinds of slurry material being different from above-mentioned slurry are permissible
For chemistry hardwood pulp, BCTMP.
In the present embodiment, the manufacture method of paper preferably applies to paper machine, is paper machine further referring to Fig. 2, Fig. 2
Slurry line schematic flow sheet.When applying to this paper machine, (the low dense fiberizer of N-to N-pulping tower arrives mixed more such as to may select N line
Close stock tank) carry out above-mentioned steps interpolation process.Such as, the super high molecular weight sun added in step S12 in the present embodiment
After the defibrination adding the point preferably low dense fiberizer of N-of cationic polyacrylamide, before blending chest, preferred interpolation
After point is for N-pulping tower, before blending chest.It is similar to, the interpolation of the filler added in step S13 in the present embodiment
After point is preferably the defibrination of the low dense fiberizer of N-, before blending chest, after preferred interpolation point is N-pulping tower, mixing
Before stock tank.After 3rd mixture is mixed with other two kinds of slurry material being different from slurry, add according to above-mentioned selection N line
The situation processed, other two kinds of slurry material described herein are respectively at L1.1 line (the low dense fiberizer of L1.1--to L1.1-pulping
Tower arrives blending chest again) and L1.2 line (the low dense fiberizer of L1.2--arrive blending chest again to L1.2-pulping tower) carry out defibrination and
Pulping but process without above-mentioned interpolation, last 3rd mixture with other two kinds of slurry material after blending chest mixes
Form mixing slurry, then add chemicals in mixing slurry, then arrive paper machine and manufacture paper with pulp paper.Such as, in the present embodiment, chemicals
Can be cationic starch, retention and drainage aid agent etc., it will be understood that in other embodiments, chemicals can also be other materials,
This is not limited by the present embodiment, it will be understood that in other embodiments, it is also possible on selection L1.1 line or L1.2 line are carried out
State interpolation to process.
Select concrete consumption and material below, introduce several embodiment, and the paper preparing each embodiment carries out phase
The physical property detection closed.
Second embodiment of the paper manufacture method of the present invention is as follows:
The present embodiment is at making in laboratory handsheet, and the manufacture method of paper comprises the following steps:
The first step, takes chemistry hardwood pulp 10g, is diluted to concentration 5.0% with plain boiled water.
Second step, adds 0.5Kg/T filler in chemistry hardwood pulp, and the quantity of electric charge is 15meq/g, and molecular weight is
The ultra-high molecular weight cationic polyacrylamide of 30000KDa, forms the first mixture after stirring 60s.
3rd step, adds 2g winnofil (filler) in the first mixture, forms the second mixing after being again stirring for 60s
Thing.
4th step: adding the 4.5Kg/T filler quantity of electric charge in the second mixture is 10meq/g, and molecular weight is 3000KDa's
Filler flocculant, stirring 60s forms the 3rd mixture and is incubated standby at 50 DEG C.
5th step: take after chemistry softwood pulp 6g, BCTMP4g addition the 3rd mixture carries out mix and blend and add 0.8
Add plain boiled water after cationic starch stirring 30s and be diluted to about 1%, then add the cation poly-third of mass concentration 0.1%
Acrylamide 100ppm, adding mass concentration after stirring 30s is bentonite solution 2000ppm of 1%, then after stirring 30s
Carry out drainage, the intensity of detection handsheet.
In the 5th step, the chemicals of interpolation is cationic starch, PAMC and bentonite solution, this
Place's PAMC is retention agent (consumption can be the arbitrary value between 100-500ppm in other embodiments), this
Retention agent can increase keeping of filler and fiber in paper making process, and cationic starch is reinforcing agent.And bentonite solution is
Retention agent (consumption can be the arbitrary value between 2000-6000ppm in other embodiments).Hereinafter each embodiment is added
The effect of chemicals similar with the present embodiment.In other embodiments, BCTMP can also be with APMP or other mechanical pulp generations
Replace.
Refer to following table one, table one be second embodiment of the invention paper manufacture method prepare handsheet related property
Testing result.
| Project | Contrast handsheet | Handsheet |
| Tear index mN m2/g | 7.2 | 6.8 |
| Burst index kpa m2/g | 2.3 | 2.7 |
| Tensile index N m/g | 40.8 | 44.8 |
| Cohesiveness kg cm | 1.30 | 1.52 |
| Folding strength (1.5) | 7 | 15 |
| Ash (ash) % | 7.79 | 8.65 |
| Drainage ml | 285 | 315 |
In table one, contrast handsheet is that wet end furnish is identical, and filler addition is identical, the chemicals usage phase used
With, but do not process filler and slurry, and the handsheet also prepared at laboratory according to the mode in the present embodiment.From table
Can be seen that in one that tensile index, folding strength and drainage are obviously improved, concrete tensile index rises to from 40.8
44.8 improve 9.8%, and folding strength rises to 15 from 7 and improves 114%, and drainage rises to 315 from 285 and improves 10.5%,
Other indexs such as tear index is also declined slightly, and burst index and ash slightly promote.
3rd embodiment of the paper manufacture method of the present invention is as follows:
The present embodiment is at making in laboratory handsheet, and the manufacture method of paper comprises the following steps:
The first step: take BCTMP4g, after disperseing with hot water, plain boiled water is diluted to concentration 0.8%.
In the first step, BCTMP also can replace with APMP or other mechanical pulps.
Second step: adding 5Kg/T filler in BCTMP, the quantity of electric charge is 5meq/g, and molecular weight is that the superelevation of 8000KDa is divided
Son amount PAMC, forms the first mixture after stirring 60s.
3rd step: add 8g Pulvis Talci (filler) in the first mixture, form the second mixture after being again stirring for 60s.
4th step: adding 0.5Kg/T filler in the second mixture, the quantity of electric charge is 30meq/g, and molecular weight is 10000KDa
Filler flocculant, stirring 60s after formed the 3rd mixture be incubated standby at 50 DEG C.
5th step: take chemistry softwood pulp 6g, chemistry hardwood pulp 10g, add after adding the 3rd mixture mix and blend
The cationic starch of 0.8, stirring 30s after add plain boiled water be diluted to about 1%, then add mass concentration 0.1% sun from
Sub-polyacrylamide 500ppm, adding mass concentration after stirring 30s is bentonite solution 6000ppm of 1%.Then stir
Drainage, the intensity of detection handsheet is carried out after 30s.
Refer to following table two, table two be third embodiment of the invention paper manufacture method prepare handsheet related property
Testing result.
| Project | Contrast handsheet | Handsheet |
| Tear index mN m2/g | 6.9 | 7.4 |
| Burst index kpa m2/g | 2.4 | 2.6 |
| Tensile index N m/g | 42.4 | 44.5 |
| Cohesiveness kg cm | 1.63 | 1.85 |
| Folding strength (1.5) | 8 | 10 |
| Ash% | 26.60 | 27.65 |
| Drainage ml | 300 | 310 |
In table two, contrast handsheet is that wet end furnish is identical, and filler addition is identical, the chemicals usage phase used
With, but do not process filler and slurry, and the handsheet also prepared at laboratory according to the mode in the present embodiment.From table
Can be seen that in two that indices also has significantly lifting, tensile index rises to 44.5 from 42.4 and improves 4.9%, cohesion
Power rises to 1.85 from 1.63 and improves 13.4%, and folding strength rises to 10 from 8 and improves 25%, contrasts with first embodiment,
First embodiment add be molecular weight be the ultra-high molecular weight cationic polyacrylamide of 30000KDa, and the present embodiment add
Be molecular weight be the ultra-high molecular weight cationic polyacrylamide of 8000KDa, the handsheet strength enhancing in the present embodiment is not
And first embodiment is obvious.
4th embodiment of the paper manufacture method of the present invention is as follows:
The present embodiment is at making in laboratory handsheet, and the manufacture method of paper comprises the following steps:
The first step: taking chemistry softwood pulp 6g, after dispersion, plain boiled water is diluted to concentration 4.0%.
Second step: adding 2.0Kg/T filler in softwood pulp, the quantity of electric charge is 7.5meq/g, and molecular weight is 10000KDa
Ultra-high molecular weight cationic polyacrylamide, stirring 60s after form the first mixture.
3rd step: add 6g grinding calcium carbonate (filler) in the first mixture, forms the second mixing after being again stirring for 60s
Thing.
4th step: adding 3.5Kg/T filler in the second mixture, the quantity of electric charge is 25meq/g, and molecular weight is 10000KDa
Filler flocculant, stirring 60s after formed the 3rd mixture be incubated standby at 50 DEG C.
5th step: take chemistry hardwood pulp 10g, take BCTMP4g, adds cation after adding the 3rd mixture mix and blend
Starch 0.8%, adds plain boiled water after stirring 30s and is diluted to about 1%, then add the cation poly-third of mass concentration 0.1%
Acrylamide 200ppm, adding mass concentration after stirring 30s is bentonite solution 4000ppm of 1%.Then after stirring 30s
Carry out drainage, the intensity of detection handsheet.
In the 5th step, BCTMP also can replace with APMP or other mechanical pulps.
Refer to following table three, table three be fourth embodiment of the invention paper manufacture method prepare handsheet related property
Testing result.
| Project | Contrast handsheet | Handsheet |
| Tear index mN m2/g | 7.2 | 7.4 |
| Burst index kpa m2/g | 2.6 | 2.8 |
| Tensile index N m/g | 44.5 | 47.8 |
| Cohesiveness kg cm | 1.53 | 1.67 |
| Folding strength (1.5) | 22 | 26 |
| Ash% | 16.70 | 18.26 |
| Drainage ml | 330 | 350 |
In table three, contrast handsheet is that wet end furnish is identical, and filler addition is identical, the chemicals usage phase used
With, but do not process filler and slurry, and the handsheet also prepared at laboratory according to the mode in the present embodiment.From table
Can be seen that in three that indices also has significantly lifting.
5th embodiment of the paper manufacture method of the present invention is as follows:
Embodiment is at making in laboratory handsheet, and the manufacture method of paper comprises the following steps:
The first step: taking chemistry hardwood pulp 10g, after dispersion, plain boiled water is diluted to concentration 5.0%.
Second step: adding 1.7Kg/T filler in chemistry hardwood pulp, the quantity of electric charge is 12.5meq/g, and molecular weight is
The ultra-high molecular weight cationic polyacrylamide of 15000KDa, forms the first mixture after stirring 60s.
3rd step: add winnofil and the grinding calcium carbonate mixture of 12g, 50%:50% in the first mixture
(filler), forms the second mixture after being again stirring for 60s.
4th step: adding 2.0Kg/T filler in the second mixture, the quantity of electric charge is 15meq/g, and molecular weight is 6000KDa
Filler flocculant, stirring 60s after formed the 3rd mixture be incubated standby at 50 DEG C.
5th step: take chemistry softwood pulp 6g, take BCTMP4g, adds cation after adding the 3rd mixture mix and blend
Starch 0.8%, adds plain boiled water after stirring 30s and is diluted to about 1%, then add the cation poly-third of mass concentration 0.1%
Acrylamide 300ppm, adding mass concentration after stirring 30s is bentonite solution 4500ppm of 1%.Then after stirring 30s
Filter, the intensity of detection handsheet.
In the 5th step, BCTMP also can replace with APMP or other mechanical pulps.
Refer to following table four, table four be fifth embodiment of the invention paper manufacture method prepare handsheet related property
Testing result.
| Project | Blank | Handsheet |
| Tear index mN m2/g | 7.6 | 7.9 |
| Burst index kpa m2/g | 1.9 | 2.2 |
| Tensile index N m/g | 29.1 | 33.7 |
| Cohesiveness kg cm | 1.24 | 1.36 |
| Folding strength (1.5) | 10 | 13 |
| Ash% | 35.05 | 38.41 |
| Drainage ml | 345 | 360 |
In table four, contrast handsheet is that wet end furnish is identical, and filler addition is identical, the chemicals usage phase used
With, but do not process filler and slurry, and the handsheet also prepared at laboratory according to the mode in the present embodiment.From table
Can be seen that in four that indices also has significantly lifting.
The sixth embodiment of the paper manufacture method of the present invention is as follows:
The present embodiment is for carry out pilot scale on paper machine, and the manufacture method of paper comprises the following steps:
The first step: take chemistry softwood pulp.Being dispersed to chemistry softwood pulp mass concentration is 5.0%.
In the first step, such as the low concentration fiberizer of N line in fig. 2 can add chemistry softwood pulp.
Second step: adding 1.5Kg/T oven dry stock in chemistry softwood pulp, the quantity of electric charge is 10meq/g, and molecular weight is
The first mixture is formed after the ultra-high molecular weight cationic polyacrylamide stirring of 12000KDa.
In second step, adding 1.5Kg again in the chemical softwood pulp in N line, the quantity of electric charge is 10meq/g, molecular weight
Ultra-high molecular weight cationic polyacrylamide for 12000KDa.
3rd step: add the grinding calcium carbonate (filler) that mass concentration is 18% in the first mixture.Formed after stirring
Second mixture, wherein the absolute dry mass ratio of filler and chemistry softwood pulp is for 1:1.
In the third step, the chemical softwood pulp in N line mixes with the first of ultra-high molecular weight cationic polyacrylamide
Add filler, preferably filler in compound again and add point in the exit of N-pulping tower.
4th step: adding 1.1Kg in the second mixture, the quantity of electric charge is 20meq/g, and molecular weight is the filler of 8000KDa
The 3rd mixture is formed after flocculant stirring.
In the 4th step, in the 3rd mixture in N line in add filler flocculant again, preferably filler flocculant adds
Add some points in the exit of N-pulping tower.
5th step: add chemistry hardwood pulp and BCTMP in the 3rd mixture, wherein chemistry hardwood pulp, BCTMP with
And the ratio of the chemical softwood pulp that the 3rd in mixture is 50:20:30, after then adding chemicals, it is manufactured into paper, wherein
Starch addition 0.8%, PAMC 300ppm, bentonite solution 4500ppm.
In the 5th step, such as, L1.1 line is chemistry hardwood pulp, and L1.2 line is BCTMP, after respective pulping tower
Enter blending chest and the 3rd mixture mixes in blending chest, in blending chest, finally add chemicals.BCTMP also may be used
Replace with APMP or other mechanical pulps.
Refer to following table five, table five be sixth embodiment of the invention paper manufacture method prepare paper related property
Testing result.
| Project | Contrast paper | Pilot scale paper |
| Tear index mN m2/g | 6.2 | 6.1 |
| Burst index kpa m2/g | 2.55 | 2.45 |
| Tensile index N m/g | 19.7 | 21.0 |
| Cohesiveness kg cm | 1.02 | 1.05 |
| Folding strength (1.5) | 8 | 10 |
| Ash% | 16.3 | 18.00 |
In table five, contrast paper is that wet end furnish is identical, and filler addition is identical, and the chemicals usage used is identical,
But do not process filler and slurry, and the paper that also pilot scale prepares on paper machine according to the mode in the present embodiment.From table
Can be seen that in five that indices also has significantly lifting.
Being different from the situation of prior art, the present invention utilizes the super high molecular weight cation of molecular weight 8000K-30000KDa
Electrostatic attraction between polyacrylamide and slurry and the poly-effect of bridging wadding, by this ultra-high molecular weight cationic polyacrylamide with
Slurry mixes, and makes pulp surface cover one layer of positive charge, strengthens the sucking action to the filler with negative charge so that slurry
Form a filler slurry complex having electrostatic attraction and bridging wadding to gather with filler, and this species complex has the strongest resisting
Shear ability.Utilize ultra-high molecular weight cationic polyacrylamide both can increase interfibrous junction point in slurry and also have quiet
Electric attraction and the poly-effect of bridging wadding, can preferably reinforcement filler and interfibrous adhesion so that prepared
The physical strength indexs such as paper is cohesion, folding promote.And the filler flocculant being eventually adding makes to be free in slurry and filler is multiple
Filler outside zoarium is again poly-at complex surfaces wadding.So by the electrostatic attraction of twice and bridging wadding poly-make filler and
The inclusion enclave of densification is formed between slurry.Sheet forming when, high molecular filler flocculant can not only make filler
Paper web is uniformly distributed, moreover it is possible between slurry and filler, serve as cementation.
Entrance is added again after process rather than individual processing filler it addition, filler and slurry are put together by the present invention
Paste system so that paper technology is more simplified, can be in the processing equipment reducing filler, it is ensured that body paper intensity, and paper machine is transported
Chemicals cost and the production cost of paper of filler processing section can also be effectively reduced while turning property.
The foregoing is only embodiments of the present invention, not thereby limit the scope of the claims of the present invention, every utilization is originally
Equivalent structure or equivalence flow process that description of the invention and accompanying drawing content are made convert, or are directly or indirectly used in what other were correlated with
Technical field, is the most in like manner included in the scope of patent protection of the present invention.
Claims (6)
1. the manufacture method of a paper, it is characterised in that described manufacture method includes:
Prepare certain density slurry；
Adding molecular weight in described slurry is the ultra-high molecular weight cationic polyacrylamide of 8000k-30000kDa, and mixing is all
The first mixture making described pulp surface cover positive charge is formed after even；
In described first mixture, add the certain density filler with negative charge, formed after mix homogeneously described slurry,
The second mixture that described ultra-high molecular weight cationic polyacrylamide and described filler mutually wrap up；
The 3rd mixture is formed after adding the filler flocculant that molecular weight is 3000k-10000kDa in described second mixture；
Add chemicals after being mixed with other two kinds of slurry material being different from described slurry by described 3rd mixture, then make
Become described paper；
Wherein, the concentration of the described slurry of preparation is 0.8-6.5%, and the concentration of described filler is 10-68%, described supra polymer
The addition of amount PAMC is 0.5-5kg/t filler, and described slurry is 1 with the absolute dry mass ratio of described filler:
0.2-1:2.0, the addition of described filler flocculant is 0.5-4.5kg/t filler, described super high molecular weight cation polypropylene
The charge density of amide is 5-15meq/g, and the charge density of described filler flocculant is 10-30meq/g.
Manufacture method the most according to claim 1, it is characterised in that described ultra-high molecular weight cationic polyacrylamide
Molecular weight is 10000k-15000kDa.
Manufacture method the most according to claim 1, it is characterised in that described filler flocculating agent molecule amount is 6000k-
10000kDa。
Manufacture method the most according to claim 1, it is characterised in that described filler flocculant is acrylamide and polypropylene
Acid or the copolymer of polyacrylic acid derivative, wherein said polyacrylic acid derivative is: polymethyl acrylate, polyacrylic acid second
Ester, polyacrylic acid dimethylaminoethyl or polyacrylic acid dimethylaminoethyl Methochloride.
Manufacture method the most according to claim 1, it is characterised in that described slurry is chemistry softwood pulp, chemistry broad-leaved
One or two kinds of in wood pulp, BCTMP and APMP and slurry mixed above.
Manufacture method the most according to claim 1, it is characterised in that described filler be grinding calcium carbonate, winnofil,
At least one in Kaolin, Pulvis Talci or titanium dioxide.
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| CN201410183084.7A CN103952940B (en) | 2014-04-30 | 2014-04-30 | The manufacture method of paper |
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| CN201410183084.7A CN103952940B (en) | 2014-04-30 | 2014-04-30 | The manufacture method of paper |
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| CN104878656B (en) * | 2015-05-28 | 2017-03-22 | 金东纸业（江苏）股份有限公司 | Papermaking method |
| JP6799428B2 (en) * | 2015-10-02 | 2020-12-16 | ソマール株式会社 | Paper manufacturing method and yield improver kit |
| CN106958166A (en) * | 2017-04-12 | 2017-07-18 | 明光市国星凹土有限公司 | One kind contains bentonitic paper and preparation method thereof |
| CN107675556B (en) * | 2017-09-18 | 2020-08-11 | 浙江杭化新材料科技有限公司 | On-site coating pre-flocculation modification method of papermaking filler |
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| US5266164A (en) * | 1992-11-13 | 1993-11-30 | Nalco Chemical Company | Papermaking process with improved drainage and retention |
| CN1675432A (en) * | 2002-08-07 | 2005-09-28 | 巴斯福股份公司 | The production of paper, paperboard, and cardboard |
| CN101155961A (en) * | 2005-02-11 | 2008-04-02 | 赫尔克里士公司 | An additive system for use in paper making and process of using the same |
| CN102277782A (en) * | 2011-08-31 | 2011-12-14 | 华南理工大学 | Nano TiO2 compounded system and application thereof in drainage and retention of waste paper deinking pulp |
| CN102597369A (en) * | 2009-11-13 | 2012-07-18 | 应用化学商贸有限公司 | Method for producing paper or the like |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US5266164A (en) * | 1992-11-13 | 1993-11-30 | Nalco Chemical Company | Papermaking process with improved drainage and retention |
| CN1675432A (en) * | 2002-08-07 | 2005-09-28 | 巴斯福股份公司 | The production of paper, paperboard, and cardboard |
| CN101155961A (en) * | 2005-02-11 | 2008-04-02 | 赫尔克里士公司 | An additive system for use in paper making and process of using the same |
| CN102597369A (en) * | 2009-11-13 | 2012-07-18 | 应用化学商贸有限公司 | Method for producing paper or the like |
| CN102277782A (en) * | 2011-08-31 | 2011-12-14 | 华南理工大学 | Nano TiO2 compounded system and application thereof in drainage and retention of waste paper deinking pulp |
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