CN102154925B - Production method of anti-myopia paper - Google Patents
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- CN102154925B CN102154925B CN2010106239906A CN201010623990A CN102154925B CN 102154925 B CN102154925 B CN 102154925B CN 2010106239906 A CN2010106239906 A CN 2010106239906A CN 201010623990 A CN201010623990 A CN 201010623990A CN 102154925 B CN102154925 B CN 102154925B
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Abstract
The invention provides a production method of an anti-myopia paper. The method comprises the steps of: impregnating a wheat straw raw material by chemical medical liquid; pretreating under a normal-pressure and low-temperature condition; separating and thinning fiber by a mechanical twisting, grinding and fiber-separating method; and copying into a paper on a paper maker. The directly-obtained color of the paper is yellow, the yellow fiber paper with different depth degrees can be produced according to the difference of the chemical products and the treatment conditions, the paper is used for the book for the school children or the reading magazine, and the paper has the function of myopia resistance without dazzling. The paper produced by the method is higher in yield and better in mechanical strength, wherein the yield of the paper is more than 60%, the rupturing length of the paper is more than 6.0km, the rupturing-resistant index is more than 4.2kPa.m<2>/g, the rupturing index is more than 3.20mN.m<2>/g, and the folding strength of the paper is more than 100 times.
Description
Technical field
The invention belongs to the pulp and paper technology field, be specifically related to a kind of production method of myopia prevention paper.
Background technology
Shortage along with the plant fiber material that papermaking relied on; Wheat straw raw material as non-timber; This continuable agricultural crop straw raw material of wheat straw begins to be paid attention to by domestic and international paper industry, and the method for the myopia prevention paper of making at present is to add dyestuff or coloring agent in the paper pulp after bleaching, and reprocessing afterwards is finished product; Adopted chemical stain, caused very big pollution to environment.
Summary of the invention
In order to overcome the deficiency of above-mentioned prior art, the object of the present invention is to provide a kind of production method of myopia prevention paper, the paper of output is that nature is yellow, has the higher output capacity and the characteristics of mechanical strength preferably.
Preparation method of the present invention is:
1) at first, pulverizes, cuts into the blade that length is 25mm-30mm to wheat straw waste; After removing silt, stone and the iron filings in the blade through grass washing machine, blade is through the screw extrusion dehydration and be transported to the pre-preg device;
2) secondly; In the pre-preg device, add the relative over dry blade 3-8 aqueous solution doubly; The described aqueous solution contains the NaOH that mass fraction is 3%-10%, the hydrogen peroxide of 3%-10%, the catalyst of 0.1%-3.0% and the fiber protective agent of 0.01%-0.1%; With the over dry blade stir and evenly mix after be heated to 60 ℃~90 ℃, keep the said temperature scope to soak then 1 hour~4 hours, make the over dry blade be softened, soak into and soft being easy to that become dissociated;
Described fiber protective agent is an anthraquinone, and described catalyst is the protective agent of 0.01%-0.1% NaOH and hydrogen peroxide by mass fraction, and 0.1%-0.3% blade softening agent constitutes; The protective agent of described NaOH and hydrogen peroxide is an anthraquinone AQ or derivatives thereof; Described blade softening agent is an organosilicate;
3) then, again through screw extrusion dehydration and to be transported to high dense pulp storage tower subsequent use, high dense pulp storage tower is for the continuity that guarantees to produce and the stability of product;
4) be transported to high-density paste mill to the slurry of the dense pulp storage tower of height and carry out defibrator process and dissociate, refining concentration is a mass fraction 6%~30%, and the beating degree behind the defibrination is 20 ° of SR~30 ° SR, and the slurry behind the mill is sent into mill back reserve pit;
5) regulating the mill back interior slurry concentration of reserve pit is mass fraction 3%~6%; And be pumped into common paste mill grinding expansion; Up to beating degree is 30 ° of SR~65 ° SR, sends into mill back machine chest, and adding mass fraction is that 10%-25% filler and mass fraction are sized mixing for the 0.01%-0.05% auxiliary agent;
Described filler is calcium carbonate or talcum powder, and described auxiliary agent is a papermaking chemical product commonly used such as retention and drainage aid agent or water repellent agent;
6) last, on paper machine Top wire former, dehydration, squeezing, drying, top sizing, drying, coil paper, packing on demand, finished product are put in storage again.
It is natural faint yellow using the color of the paper of said method production, and has higher output capacity and mechanical strength preferably, and the yield rate of product paper is greater than 60%, and the paper fracture length can reach more than the 6.0km, and burst index is greater than 4.2kPa.m
2/ g, tear index is greater than 3.20mN.m
2/ g, the folding strength of paper is more than 100 times.
The Straw Pulp output that adopts present technique to make is high, and contaminated wastewater is low, and fibre strength is high; The paper of producing is that nature is yellow; Need not dye with coloring agent, thus the environmental pollution that does not have coloring agent to bring, when being used to print various books and periodicals reading matter; Vision thing high light to the people stimulates, and therefore the effect of prevention myopia is arranged.
The specific embodiment
Following embodiment explains further details to the present invention.
Embodiment 1: a kind of production method of myopia prevention paper,
1) at first, pulverizes, cuts into the blade that length is 25mm to wheat straw waste; After removing silt, stone and the iron filings in the raw material blade through grass washing machine, blade is through the screw extrusion dehydration and be transported to the pre-preg device;
2) secondly; The aqueous solution that in the preimpregnation device, adds 3 times of relative over dry blades; It is 3% NaOH, 3% hydrogen peroxide, 0.1% catalyst and 0.01% fiber protective agent that the described aqueous solution contains mass fraction; Soaked 4 hours after the Hybrid Heating to 60 ℃, make blade be softened, soak into and soft being easy to that become dissociated;
Described fiber protective agent is an anthraquinone, and described catalyst is the protective agent of 0.01%-0.1% NaOH and hydrogen peroxide by mass fraction, and 0.1%-0.3% blade softening agent constitutes; The protective agent of described NaOH and hydrogen peroxide is an anthraquinone AQ or derivatives thereof; Described blade softening agent is an organosilicate;
3) then, again through screw extrusion dehydration and to be transported to high dense pulp storage tower subsequent use, high dense pulp storage tower is for the continuity that guarantees to produce and the stability of product;
4) be transported to high-density paste mill to the slurry of the dense pulp storage tower of height and carry out defibrator process and dissociate, refining concentration mass fraction 20%, the beating degree behind the defibrination is 20 ° of SR, the slurry behind the mill is sent into mill back reserve pit;
5) regulating that slurry concentration is a mass fraction 3% in the reserve pit of mill back, and be pumped into common paste mill grinding expansion, is 30 ° of SR up to beating degree, sends into mill back machine chest, and adding mass content is that 10% filler and mass content are papermaking after 0.01% auxiliary agent is sized mixing;
Described filler comprises calcium carbonate or talcum powder, and described auxiliary agent comprises retention agent, filter aid or water repellent agent;
6) last, on paper machine Top wire former, dehydration, squeezing, drying, top sizing, drying, coil paper, packing on demand, finished product are put in storage again.
Have higher yield and mechanical strength preferably with the paper of said method production, the yield rate of producing paper reaches 67%, and the paper fracture length can reach more than the 6.0km, and burst index is greater than 4.0kPa.m
2/ g, tear index is greater than 3.20mN.m
2/ g, the folding strength of paper is more than 100 times, and the color of paper is faint yellow.
Embodiment 2: a kind of production method of myopia prevention paper,
1) at first, pulverizes, cuts into the blade that length is 30mm to wheat straw waste; After removing silt, stone and the iron filings in the raw material blade through grass washing machine, blade is through the screw extrusion dehydration and be transported to the pre-preg device;
2) secondly; The aqueous solution that in the preimpregnation device, adds 8 times of relative over dry blades; It is 10% NaOH, 10% hydrogen peroxide, 3.0% catalyst and 0.1% fiber protective agent that the described aqueous solution contains mass fraction; Soaked 2 hours after the Hybrid Heating to 60 ℃, make blade be softened, soak into and soft being easy to that become dissociated;
Described fiber protective agent is an anthraquinone, and described catalyst is the protective agent of 0.01%-0.1% NaOH and hydrogen peroxide by mass fraction, and 0.1%-0.3% blade softening agent constitutes; The protective agent of described NaOH and hydrogen peroxide is an anthraquinone AQ or derivatives thereof; Described blade softening agent is an organosilicate;
3) then, again through screw extrusion dehydration and to be transported to high dense pulp storage tower subsequent use, high dense pulp storage tower is for the continuity that guarantees to produce and the stability of product;
4) carry out defibrator process to the slurry of the dense pulp storage tower of height with helical feed to high-density paste mill and dissociate, refining concentration is a mass fraction 30%, and the beating degree behind the defibrination is 28 ° of SR, and the slurry behind the mill is made a gift to someone and ground the back reserve pit;
5) regulating the mill back interior slurry concentration of reserve pit is mass fraction 4%, and is pumped into common paste mill grinding expansion, is 45 ° of SR up to beating degree, sends into mill back machine chest, and adding mass content is that 15% filler and mass content are that 0.03% auxiliary agent is sized mixing;
Described filler comprises calcium carbonate or talcum powder, and described auxiliary agent comprises retention agent, filter aid or water repellent agent;
6) last, on paper machine Top wire former, dehydration, squeezing, drying, top sizing, drying, coil paper, packing on demand, finished product are put in storage again.
Have higher yield and mechanical strength preferably with the paper of said method production, the yield rate of producing paper is greater than 65%, and the paper fracture length can reach more than the 6.3km, and burst index is greater than 4.2kPa.m
2/ g, tear index is greater than 3.20mN.m
2/ g, the folding strength of paper is more than 110 times, and the color of paper is golden yellow.
Embodiment 3: a kind of production method of myopia prevention paper,
1) at first, pulverizes, cuts into the blade that length is 28mmmm to wheat straw waste; After removing silt, stone and the iron filings in the raw material blade through grass washing machine, blade is through the screw extrusion dehydration and be transported to the pre-preg device;
2) secondly; Blade adds water in the preimpregnation device; The aqueous solution that adds 5 times of relative over dry blades; Described aqueous solution mass fraction is 8% NaOH, 7% hydrogen peroxide, 1.5% catalyst and 0.04% fiber protective agent, soaks 1 hour after the Hybrid Heating to 90 ℃, makes blade be softened, soak into and soft being easy to that become dissociated;
Described fiber protective agent is an anthraquinone, and described catalyst is the protective agent of 0.01%-0.1% NaOH and hydrogen peroxide by mass fraction, and 0.1%-0.3% blade softening agent constitutes; The protective agent of described NaOH and hydrogen peroxide is an anthraquinone AQ or derivatives thereof; Described blade softening agent is an organosilicate;
3) then, again through screw extrusion dehydration and to be transported to high dense pulp storage tower subsequent use, high dense pulp storage tower is for the continuity that guarantees to produce and the stability of product;
4) carry out defibrator process to the slurry of the dense pulp storage tower of height with helical feed to high-density paste mill and dissociate, refining concentration is a mass fraction 20%, and the beating degree behind the defibrination is 25 ° of SR, and the slurry behind the mill is made a gift to someone and ground the back reserve pit;
5) regulating the mill back interior slurry concentration of reserve pit is mass fraction 6%, and is pumped into common paste mill grinding expansion, is 40 ° of SR up to beating degree, sends into mill back machine chest, and adding mass content is that 20% filler and mass content are that 0.04% auxiliary agent is sized mixing;
Described filler comprises calcium carbonate or talcum powder, and described auxiliary agent comprises retention agent, filter aid or water repellent agent;
6) last, on paper machine Top wire former, dehydration, squeezing, drying, top sizing, drying, coil paper, packing on demand, finished product are put in storage again.
Have higher yield and mechanical strength preferably with the paper of said method production, the yield rate of producing paper is greater than 63%, and the paper fracture length can reach more than the 6.7km, and burst index is greater than 4.3kPa.m
2/ g, tear index is greater than 3.40mN.m
2/ g, the folding strength of paper is more than 210 times.The color of paper is yellow.
Embodiment 4: a kind of production method of myopia prevention paper,
1) at first, pulverizes, cuts into the blade that length is 25mm to wheat straw waste; After removing silt, stone and the iron filings in the raw material blade through grass washing machine, blade is through the screw extrusion dehydration and be transported to the pre-preg device;
2) secondly; Blade adds water in the preimpregnation device; The aqueous solution that adds 6 times of relative over dry blades; It is 5% NaOH, 10% hydrogen peroxide, 2.5% catalyst and 0.06% fiber protective agent that the described aqueous solution contains mass fraction, soaks 3 hours after the Hybrid Heating to 80 ℃, makes blade be softened, soak into and soft being easy to that become dissociated;
Described fiber protective agent is an anthraquinone, and described catalyst is the protective agent of 0.01%-0.1% NaOH and hydrogen peroxide by mass fraction, and 0.1%-0.3% blade softening agent constitutes; The protective agent of described NaOH and hydrogen peroxide is an anthraquinone AQ or derivatives thereof; Described blade softening agent is an organosilicate;
3) then, again through screw extrusion dehydration and to be transported to high dense pulp storage tower subsequent use, high dense pulp storage tower is for the continuity that guarantees to produce and the stability of product;
4) carry out defibrator process to the slurry of the dense pulp storage tower of height with helical feed to high-density paste mill and dissociate, refining concentration is a mass fraction 30%, and the beating degree behind the defibrination is 30 ° of SR, and the slurry behind the mill is made a gift to someone and ground the back reserve pit;
5) regulating the mill back interior slurry concentration of reserve pit is mass fraction 6%, and is pumped into common paste mill grinding expansion, is 65 ° of SR up to beating degree, sends into mill back machine chest, and adding mass content is that 15% filler and mass content are that 0.02% auxiliary agent is sized mixing;
Described filler comprises calcium carbonate or talcum powder, and described auxiliary agent comprises retention agent, filter aid or water repellent agent;
6) last, on paper machine Top wire former, dehydration, squeezing, drying, top sizing, drying, coil paper, packing on demand, finished product are put in storage again.
Have higher yield and mechanical strength preferably with the paper of said method production, the yield rate of producing paper is greater than 62%, and the paper fracture length can reach more than the 7.0km, and burst index is greater than 4.7kPa.m
2/ g, tear index is greater than 3.50mN.m
2/ g, the folding strength of paper is more than 220 times, and the color of paper is light yellow.
Claims (5)
1. the production method of a myopia prevention paper is characterized in that, may further comprise the steps:
1) at first, pulverizes, cuts into the blade that length is 25mm-30mm to wheat straw waste; After removing silt, stone and the iron filings in the blade through grass washing machine, blade is through the screw extrusion dehydration and be transported to the pre-preg device;
2) secondly; In the pre-preg device, add the relative over dry blade 3-8 aqueous solution doubly; The described aqueous solution contains the NaOH that mass fraction is 3%-10%, the hydrogen peroxide of 3%-10%, the catalyst of 0.1%-3.0% and the fiber protective agent of 0.01%-0.1%; With the over dry blade stir and evenly mix after be heated to 60 ℃~90 ℃, keep the said temperature scope to soak then 1 hour~4 hours, make the over dry blade be softened, soak into and soft being easy to that become dissociated;
Described fiber protective agent is an anthraquinone, and described catalyst is the protective agent of 0.01%-0.1% NaOH and hydrogen peroxide by mass fraction, and 0.1%-0.3% blade softening agent constitutes; The protective agent of described NaOH and hydrogen peroxide is an anthraquinone AQ or derivatives thereof; Described blade softening agent is an organosilicate;
3) then, again through screw extrusion dehydration and to be transported to high dense pulp storage tower subsequent use, high dense pulp storage tower is for the continuity that guarantees to produce and the stability of product;
4) be transported to high-density paste mill to the slurry of the dense pulp storage tower of height and carry out defibrator process and dissociate, refining concentration is a mass fraction 6%~30%, and the beating degree behind the defibrination is 20 ° of SR~30 ° SR, and the slurry behind the mill is sent into mill back reserve pit;
5) regulating the mill back interior slurry concentration of reserve pit is mass fraction 3%~6%; And be pumped into common paste mill grinding expansion; Up to beating degree is 30 ° of SR~65 ° SR, sends into mill back machine chest, and adding mass fraction is that 10%-25% filler and mass fraction are sized mixing for the 0.01%-0.05% auxiliary agent;
Described filler is calcium carbonate or talcum powder, and described auxiliary agent is retention agent, filter aid or water repellent agent;
6) last, on paper machine Top wire former, dehydration, squeezing, drying, top sizing, drying, coil paper, packing on demand, finished product are put in storage again;
It is natural faint yellow using the color of the paper of said method production, and has higher output capacity and mechanical strength preferably, and the yield rate of product paper is greater than 60%, and the paper fracture length can reach more than the 6.0km, and burst index is greater than 4.2kPam
2/ g, tear index is greater than 3.20mNm
2/ g, the folding strength of paper is more than 100 times.
2. the production method of a kind of myopia prevention paper according to claim 1 is characterized in that, may further comprise the steps:
1) at first, pulverizes, cuts into the blade that length is 25mm to wheat straw waste; After removing silt, stone and the iron filings in the raw material blade through grass washing machine, blade is through the screw extrusion dehydration and be transported to the pre-preg device;
2) secondly; The aqueous solution that in the preimpregnation device, adds 3 times of relative over dry blades; It is 3% NaOH, 3% hydrogen peroxide, 0.1% catalyst and 0.01% fiber protective agent that the described aqueous solution contains mass fraction; Soaked 4 hours after the Hybrid Heating to 60 ℃, make blade be softened, soak into and soft being easy to that become dissociated;
Described fiber protective agent is an anthraquinone, and described catalyst is the protective agent of 0.01%-0.1% NaOH and hydrogen peroxide by mass fraction, and 0.1%-0.3% blade softening agent constitutes; The protective agent of described NaOH and hydrogen peroxide is an anthraquinone AQ or derivatives thereof; Described blade softening agent is an organosilicate;
3) then, again through screw extrusion dehydration and to be transported to high dense pulp storage tower subsequent use, high dense pulp storage tower is for the continuity that guarantees to produce and the stability of product;
4) be transported to high-density paste mill to the slurry of the dense pulp storage tower of height and carry out defibrator process and dissociate, refining concentration mass fraction 20%, the beating degree behind the defibrination is 20 ° of SR, the slurry behind the mill is sent into mill back reserve pit;
5) regulating that slurry concentration is a mass fraction 3% in the reserve pit of mill back, and be pumped into common paste mill grinding expansion, is 30 ° of SR up to beating degree, sends into mill back machine chest, and adding mass content is that 10% filler and mass content are papermaking after 0.01% auxiliary agent is sized mixing;
Described filler comprises calcium carbonate or talcum powder, and described auxiliary agent comprises retention agent, filter aid or water repellent agent;
6) last, on paper machine Top wire former, dehydration, squeezing, drying, top sizing, drying, coil paper, packing on demand, finished product are put in storage again.
3. the production method of a kind of myopia prevention paper according to claim 1 is characterized in that, may further comprise the steps:
1) at first, pulverizes, cuts into the blade that length is 30mm to wheat straw waste; After removing silt, stone and the iron filings in the raw material blade through grass washing machine, blade is through the screw extrusion dehydration and be transported to the pre-preg device;
2) secondly; The aqueous solution that in the preimpregnation device, adds 8 times of relative over dry blades; It is 10% NaOH, 10% hydrogen peroxide, 3.0% catalyst and 0.1% fiber protective agent that the described aqueous solution contains mass fraction; Soaked 2 hours after the Hybrid Heating to 60 ℃, make blade be softened, soak into and soft being easy to that become dissociated;
Described fiber protective agent is an anthraquinone, and described catalyst is the protective agent of 0.01%-0.1% NaOH and hydrogen peroxide by mass fraction, and 0.1%-0.3% blade softening agent constitutes; The protective agent of described NaOH and hydrogen peroxide is an anthraquinone AQ or derivatives thereof; Described blade softening agent is an organosilicate;
3) then, again through screw extrusion dehydration and to be transported to high dense pulp storage tower subsequent use, high dense pulp storage tower is for the continuity that guarantees to produce and the stability of product;
4) carry out defibrator process to the slurry of the dense pulp storage tower of height with helical feed to high-density paste mill and dissociate, refining concentration is a mass fraction 30%, and the beating degree behind the defibrination is 28 ° of SR, and the slurry behind the mill is sent into mill back reserve pit;
5) regulating the mill back interior slurry concentration of reserve pit is mass fraction 4%, and is pumped into common paste mill grinding expansion, is 45 ° of SR up to beating degree, sends into mill back machine chest, and adding mass content is that 15% filler and mass content are that 0.03% auxiliary agent is sized mixing;
Described filler comprises calcium carbonate or talcum powder, and described auxiliary agent comprises retention agent, filter aid or water repellent agent;
6) last, on paper machine Top wire former, dehydration, squeezing, drying, top sizing, drying, coil paper, packing on demand, finished product are put in storage again.
4. the production method of a kind of myopia prevention paper according to claim 1 is characterized in that, may further comprise the steps:
1) at first, pulverizes, cuts into the blade that length is 28mm to wheat straw waste; After removing silt, stone and the iron filings in the raw material blade through grass washing machine, blade is through the screw extrusion dehydration and be transported to the pre-preg device;
2) secondly; Blade adds water in the preimpregnation device; The aqueous solution that adds 5 times of relative over dry blades; Described aqueous solution mass fraction is 8% NaOH, 7% hydrogen peroxide, 1.5% catalyst and 0.04% fiber protective agent, soaks 1 hour after the Hybrid Heating to 90 ℃, makes blade be softened, soak into and soft being easy to that become dissociated;
Described fiber protective agent is an anthraquinone, and described catalyst is the protective agent of 0.01%-0.1% NaOH and hydrogen peroxide by mass fraction, and 0.1%-0.3% blade softening agent constitutes; The protective agent of described NaOH and hydrogen peroxide is an anthraquinone AQ or derivatives thereof; Described blade softening agent is an organosilicate;
3) then, again through screw extrusion dehydration and to be transported to high dense pulp storage tower subsequent use, high dense pulp storage tower is for the continuity that guarantees to produce and the stability of product;
4) carry out defibrator process to the slurry of the dense pulp storage tower of height with helical feed to high-density paste mill and dissociate, refining concentration is a mass fraction 20%, and the beating degree behind the defibrination is 25 ° of SR, and the slurry behind the mill is sent into mill back reserve pit;
5) regulating the mill back interior slurry concentration of reserve pit is mass fraction 6%, and is pumped into common paste mill grinding expansion, is 40 ° of SR up to beating degree, sends into mill back machine chest, and adding mass content is that 20% filler and mass content are that 0.04% auxiliary agent is sized mixing;
Described filler comprises calcium carbonate or talcum powder, and described auxiliary agent comprises retention agent, filter aid or water repellent agent;
6) last, on paper machine Top wire former, dehydration, squeezing, drying, top sizing, drying, coil paper, packing on demand, finished product are put in storage again.
5. the production method of a kind of myopia prevention paper according to claim 1 is characterized in that, may further comprise the steps:
1) at first, pulverizes, cuts into the blade that length is 25mm to wheat straw waste; After removing silt, stone and the iron filings in the raw material blade through grass washing machine, blade is through the screw extrusion dehydration and be transported to the pre-preg device;
2) secondly; Blade adds water in the preimpregnation device; The aqueous solution that adds 6 times of relative over dry blades; It is 5% NaOH, 10% hydrogen peroxide, 2.5% catalyst and 0.06% fiber protective agent that the described aqueous solution contains mass fraction, soaks 3 hours after the Hybrid Heating to 80 ℃, makes blade be softened, soak into and soft being easy to that become dissociated;
Described fiber protective agent is an anthraquinone, and described catalyst is the protective agent of 0.01%-0.1% NaOH and hydrogen peroxide by mass fraction, and 0.1%-0.3% blade softening agent constitutes; The protective agent of described NaOH and hydrogen peroxide is an anthraquinone AQ or derivatives thereof; Described blade softening agent is an organosilicate;
3) then, again through screw extrusion dehydration and to be transported to high dense pulp storage tower subsequent use, high dense pulp storage tower is for the continuity that guarantees to produce and the stability of product;
4) carry out defibrator process to the slurry of the dense pulp storage tower of height with helical feed to high-density paste mill and dissociate, refining concentration is a mass fraction 30%, and the beating degree behind the defibrination is 30 ° of SR, and the slurry behind the mill is sent into mill back reserve pit;
5) regulating the mill back interior slurry concentration of reserve pit is mass fraction 6%, and is pumped into common paste mill grinding expansion, is 65 ° of SR up to beating degree, sends into mill back machine chest, and adding mass content is that 15% filler and mass content are that 0.02% auxiliary agent is sized mixing;
Described filler comprises calcium carbonate or talcum powder, and described auxiliary agent comprises retention agent, filter aid or water repellent agent;
6) last, on paper machine Top wire former, dehydration, squeezing, drying, top sizing, drying, coil paper, packing on demand, finished product are put in storage again.
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