CN102493283A - Technology for producing white clay-filled paper - Google Patents
Technology for producing white clay-filled paper Download PDFInfo
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- CN102493283A CN102493283A CN2011103728036A CN201110372803A CN102493283A CN 102493283 A CN102493283 A CN 102493283A CN 2011103728036 A CN2011103728036 A CN 2011103728036A CN 201110372803 A CN201110372803 A CN 201110372803A CN 102493283 A CN102493283 A CN 102493283A
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Abstract
The invention discloses a technology for producing white clay-filled paper, comprising the following steps: breaking up and dispersing bleach paper pulp by a hydrapulper, then sending the dispersed bleach paper pulp into an unbeaten pulp storage pond, adding reactive calcium carbonate micropowder adopted as a filler in the pond to obtain a mixed pulp, and adjusting the mass fraction concentration of the mixed pulp; beating by a disc grinder until the beating degree is 40-80 degrees SR, adjusting the pulp concentration to 4-6 wt%, and sending the pulp into a beating pulp storage pond; purifying the mixed pulp by a pulp screen and a desander, then sending the purified pulp into an unpulping pond, adding a reinforcing agent in the pulp, and stirring and mixing uniformly; adding a dispersant in the pulp, successively respectively adding a retention and drainage aid and a water-resistant agent; then adding water to adjust the concentration of the mixed pulp to 2-3 wt%, and sending to the unpulping pond; and pulping by a paper machine to obtain paper or paperboards having a required quantity, and adding coating latex to carry out dip coating. By uniformly coating the latex, the fibers used for making up the paper are combined tightly, and the paper has the characteristics of large tensile strength, low elongation, high whiteness, and high nontransparency.
Description
Technical field
The invention belongs to paper technology field, be specifically related to a kind of production technology of white clay loaded sheet, utilize the white clay filler to substitute the papermaking process of part fiber, this technology not only energy-conserving and environment-protective but also low carbon cycle belong to domestic initiation.
Background technology
Paper commonly used at present all is to be main production technology with the string.With the cultural paper is example, and it is to be main with a large amount of string paper pulp, doses mineral filler such as about 10%～25% reacting calcium carbonate that do not wait or talcum powder and a spot of chemical assistant again and accomplishes papermaking.This paper has higher printing performance and writing quality and other serviceability, for the mankind's cultural development and spiritual civilization development and historical continuity have played the effect of performing meritorious deeds never to be obliterated and going out.Yet; Today is well-known to be; It is bigger to be accompanied by environmental pollution and plant material consumption that pulping process brings, and water consumption is big, the problem that energy resource consumption is big; Reduce the paper pulp fiber consumption but the necessary viewpoint that keeps the paper self character from consideration, developed the method for manufacturing technology of white clay filler paper.
The product that is called as stone paper is also arranged at present; It is the processing method of mixing film forming with reacting calcium carbonate powder and plastics; This method is the reacting calcium carbonate powder with about 50%～80%; Granularity is 800 orders to about 1200 orders, earlier with PV plastics and the mixing particle that manufactures of adhesive, manufactures as the film of papermaking both stone paper with the plastic molding press of blown film or press mold again.The quality of this paper has very big difference with sheet properties commonly used, and subject matter is difficult degradation, pollute greatly, and difficult printing, usable floor area little (weight is big), cost is also higher, and reclaims very difficult.
The white clay loaded sheet is a skeleton with 20%～50% plant paper pulp fiber raw material, is filler with the white clay reaction response calcium carbonate fine powder (being designated hereinafter simply as filler BN) after reclaiming for 50%～70% night, and its main component is a reaction response calcium carbonate.Water soluble macromolecular multi-component polymer is made reinforcing agent, utilizes the paper technology method to produce paper or cardboard, also can after water-fast latex dipping coating, can make paper possess higher pulling force and certain water proofing property.Compare with paper now commonly used, the white clay loaded sheet has that percentage elongation is low and pollution-free, degradable, recyclable, advantage that cost is low, particularly in the powerful advantages of practicing thrift aspect the plant paper pulp fiber, makes its purposes constantly to increase.The white clay loaded sheet except the character that keeps existing cultural paper, more environmental protection, more economical, low-carbon (LC) more.
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 technology of white clay loaded sheet, have the intensity height, opacity is high, and percentage elongation is low, and the characteristics of the environmental protection low-carbon economy of easy recovery.
To achieve these goals, the technical scheme of the present invention's employing is: a kind of production technology of white clay loaded sheet may further comprise the steps:
The main technique flow process is following:.
Clean paper pulp fiber → hydrabrusher → pulp storage tank adding filler BN → disc mill → pulp storage tank after kowtowing → pond → scummer of sizing mixing before kowtowing → copy preceding stock tank, add auxiliary agent → online → drying → curl → rewinding → the finished product packing warehouse-in.
To achieve these goals, the technical scheme of the present invention's employing is: a kind of production technology of white clay loaded sheet may further comprise the steps:
The first step; By gross mass; Accounting for mass fraction is to make a gift to someone after 30% ~ 50% bleached pulp disperses with the hydrabrusher size degradation to kowtow preceding pulp storage tank; In this stock tank, add the filler BN account for gross mass 50%～70% mass fraction, i.e. white clay reacting calcium carbonate micro mist is regulated mass fraction concentration to 6%～10% of mixed slurry;
Said reacting calcium carbonate micro mist is the porous white powder of being produced by the alkali recovery white slime recrement, and whiteness is more than 85%, and density is 0.17-0.30BN/cm only
3, particle diameter 15-30um;
Second step, pull an oar after the beating degree of 40 ° of SR～80 ° SR with disc mill, being adjusted to mass fraction to slurry concentration is to make a gift to someone after 4%～6% to kowtow the back pulp storage tank;
In the 3rd step, paper pulp behind pulp screen and desander purification paper pulp and the mixed slurry of filler BN are sent into and are copied preceding stock tank;
In the 4th step, the relative pulp quality mark of adding is 1%～5% reinforcing agent in mixed slurry, stirs and mixes;
Said reinforcing agent is a kind of water miscible PVA fiber, can directly add in the slurry to mix with paper pulp fiber, copies behind the paper when dry and to combine the generation humidification with paper pulp fiber;
The 5th step added relative pulp quality mark and is 0.5%～1.5% dispersant again in mixed slurry, stir and mix; Add relative pulp quality mark successively more respectively and be 0.3%～3% retention and drainage aid agent and pulp quality mark relatively and be 1.0%～4.5% water repellent agent;
Said dispersant is polyethylene glycol oxide PEO, and to become mass fraction be 1%～4% solution to thin up during use, adds in the slurry fiber is evenly disperseed, and guarantees the evenness of paper;
Said retention and drainage aid agent is high molecular polymer such as PAM, and purpose is the worry water speed when accelerating the shaping of l Water Paper page or leaf;
Said water repellent agent is water miscible organic silicon solution, adds paper pulp and can combine the anti-water effect that produces with fiber and reacting calcium carbonate micro mist;
In the 6th step, adding water, to regulate mixed slurry concentration mass fraction be to make a gift to someone after 2%～3% to copy preceding stock tank;
The 7th step; Manufacture paper with pulp into required quantitative paper or cardboard with paper machine; Add relative pulp quality mark and be 1.5%～5.5% latex coating and carry out dip coated, evenly can make between the fiber of forming paper behind the latex coating and combine closely, form and have the higher pulling force and the paper of water proofing property.
The mixing material that said latex coating is made up of starch, reacting calcium carbonate micro mist, AKD, latex etc.; Paying uniformly and paper surface; Form level and smooth bright and clean surface; Also available carboxylic styrene butadiene latex is coated on the surface strength that can increase paper in the page with infusion process, prevents the paper layering and gives paper anti-water humidity resistance.
The paper tensile strength of producing with said method is big, and percentage elongation is low, and whiteness is high, and opacity is high, and wherein fracture length is greater than 3.5km, and percentage elongation is less than 2.0%, and burst index is greater than 2.50kPa.m
2/ g, tear index is greater than 4.15mN. m
2/ g, opacity is greater than 90%, do not add that whiteness is higher than 87% under the situation of any brightening agent.
The specific embodiment
Below in conjunction with concrete embodiment production method of the present invention is done further explain.
Embodiment 1
A kind of method of manufacturing technology of white clay loaded sheet may further comprise the steps:
The first step; By gross mass is mass fraction to make a gift to someone after 50% bleached sulphate needlebush pulpboard water power pulper size degradation disperses to kowtow preceding pulp storage tank; In this stock tank, add the filler BN that accounts for gross mass 50% mass fraction; Be white clay reacting calcium carbonate micro mist, regulate the mass fraction concentration to 6.0% of slurry;
Said reacting calcium carbonate micro mist is the porous white powder of being produced by the alkali recovery white slime recrement, and whiteness is 86%, and density is 0.17BN/cm only
3, particle diameter 15um.
Second step, pull an oar after the beating degree of 45 ° of SR with disc mill, being adjusted to mass fraction to slurry concentration is 4.0%, makes a gift to someone and kowtows the back pulp storage tank;
In the 3rd step, paper pulp after pulp screen and desander purification and the mixed slurry of filler BN are made a gift to someone and are copied preceding stock tank;
In the 4th step, the relative pulp quality mark of adding is 1.0% reinforcing agent in slurry, stirs and mixes; Said reinforcing agent is a kind of water miscible PVA fiber, can directly add in the slurry to mix with paper pulp fiber, copies behind the paper when dry and to combine the generation humidification with paper pulp fiber;
In the 5th step, in slurry, add relative pulp quality mark again and be 0.5% dispersant; Add relative pulp quality mark successively more respectively and be 0.3% retention and drainage aid agent and pulp quality mark relatively and be 1.0% water repellent agent;
Said dispersant is polyethylene glycol oxide PEO, and to become mass fraction be 1% solution to thin up during use, adds in the slurry fiber is evenly disperseed, and guarantees the evenness of paper;
Said retention and drainage aid agent is high molecular polymer such as PAM, and purpose is the worry water speed when accelerating the shaping of l Water Paper page or leaf;
Said water repellent agent is water miscible organic silicon solution, adds paper pulp and can combine the anti-water effect that produces with fiber and reacting calcium carbonate micro mist;
In the 6th step, adding water, to regulate the slurry concentration mass fraction be to make a gift to someone after 2.0% to copy preceding stock tank;
In the 7th step, use paper machine to manufacture paper with pulp and quantitatively be 52g/ m
2Paper, add relative pulp quality mark and be 1.5% latex coating and carry out dip coated, evenly can make between the fiber of forming paper behind the latex coating and combine closely, form and have the higher pulling force and the paper of water proofing property.
The mixing material that said latex coating is made up of starch, reacting calcium carbonate micro mist, AKD, latex etc. is being paid and paper surface uniformly, forms level and smooth bright and clean surface.
With the writing paper that above-mentioned process is produced, fracture length is 4.2km, and percentage elongation is 1.7%, and tear index is 4.5mN. m
2/ g, burst index are 2.9kPa.m
2/ g, opacity is 92%, whiteness 88.2%.
Embodiment 2
A kind of method of manufacturing technology of white clay loaded sheet may further comprise the steps:
The first step; By gross mass is mass fraction to make a gift to someone after 30% bleached sulphate needlebush pulpboard water power pulper size degradation disperses to kowtow preceding pulp storage tank; In this stock tank, add the filler BN that accounts for gross mass 70% mass fraction; Be white clay reacting calcium carbonate micro mist, regulate the mass fraction concentration to 8.0% of slurry;
Said reacting calcium carbonate micro mist is the porous white powder of being produced by the alkali recovery white slime recrement, and whiteness is 90%, and density is 0.30BN/cm only
3, particle diameter 30um;
Second step, pull an oar after the beating degree of 70 ° of SR with disc mill, being adjusted to mass fraction to slurry concentration is 5.0%, makes a gift to someone and kowtows the back pulp storage tank;
In the 3rd step, paper pulp behind pulp screen and desander purification paper pulp and the mixed slurry of filler BN are made a gift to someone and are copied preceding stock tank;
In the 4th step, the relative pulp quality mark of adding is 3.0% reinforcing agent in slurry, stirs and mixes;
Said reinforcing agent is a kind of water miscible PVA fiber, can directly add in the slurry to mix with paper pulp fiber, copies behind the paper when dry and to combine the generation humidification with paper pulp fiber;
In the 5th step, in slurry, add relative pulp quality mark again and be 1.0% dispersant; Add relative pulp quality mark successively more respectively and be 0.5% retention and drainage aid agent and pulp quality mark relatively and be 3.0% water repellent agent;
Said dispersant is polyethylene glycol oxide PEO, and to become mass fraction be 4% solution to thin up during use, adds in the slurry fiber is evenly disperseed, and guarantees the evenness of paper;
Said retention and drainage aid agent is high molecular polymer such as PAM, and purpose is the worry water speed when accelerating the shaping of l Water Paper page or leaf;
Said water repellent agent is water miscible organic silicon solution, adds paper pulp and can combine the anti-water effect that produces with fiber and reacting calcium carbonate micro mist;
In the 6th step, adding water, to regulate the slurry concentration mass fraction be to make a gift to someone after 3.0% to copy preceding stock tank;
In the 7th step, use paper machine to manufacture paper with pulp and quantitatively be 70g/ m
2Paper, add relative pulp quality mark and be 3.5% latex coating and carry out dip coated, evenly can make between the fiber of forming paper behind the latex coating and combine closely, form and have the higher pulling force and the paper of water proofing property.
Said latex coating is a carboxylic styrene butadiene latex, is coated on the surface strength that can increase paper in the page with infusion process, prevents the paper layering and gives paper anti-water humidity resistance.
With the writing paper that above-mentioned process is produced, fracture length is 3.7km, and percentage elongation is 1.5%, and tear index is 4.20mN. m
2/ g, burst index are 2.51kPa.m
2/ g, opacity is 96%, whiteness 89.0%.
Embodiment 3
A kind of method of manufacturing technology of white clay loaded sheet may further comprise the steps:
The first step; By gross mass, be to make a gift to someone after 35% bleached pulp disperses with the hydrabrusher size degradation to kowtow preceding pulp storage tank accounting for mass fraction, in this stock tank, add the filler BN that accounts for gross mass 65% mass fraction; Be white clay reacting calcium carbonate micro mist, regulate the mass fraction concentration to 7.0% of mixed slurry;
Said reacting calcium carbonate micro mist is the porous white powder of being produced by the alkali recovery white slime recrement, and whiteness is 95%, and density is 0.20BN/cm only
3, particle diameter 20um;
Second step, pull an oar after the beating degree of 50 ° of SR with disc mill, being adjusted to mass fraction to slurry concentration is 4.5% to make a gift to someone and kowtow the back pulp storage tank;
In the 3rd step, paper pulp behind pulp screen and desander purification paper pulp and the mixed slurry of filler BN are made a gift to someone and are copied preceding stock tank;
In the 4th step, the relative pulp quality mark of adding is 2.5% reinforcing agent in slurry, stirs and mixes;
Said reinforcing agent is a kind of water miscible PVA fiber, can directly add in the slurry to mix with paper pulp fiber, copies behind the paper when dry and to combine the generation humidification with paper pulp fiber;
The 5th step added relative pulp quality mark and is 1.5% dispersant again in slurry, stir and mix; Add relative pulp quality mark successively more respectively and be 0.3% retention and drainage aid agent and pulp quality mark relatively and be 2.0% water repellent agent;
Said dispersant is polyethylene glycol oxide PEO, and to become mass fraction be 3% solution to thin up during use, adds in the slurry fiber is evenly disperseed, and guarantees the evenness of paper;
Said retention and drainage aid agent is high molecular polymer such as PAM, and purpose is the worry water speed when accelerating the shaping of l Water Paper page or leaf;
Said water repellent agent is water miscible organic silicon solution, adds paper pulp and can combine the anti-water effect that produces with fiber and reacting calcium carbonate micro mist;
In the 6th step, adding water, to regulate mixed slurry concentration mass fraction be to make a gift to someone after 2.0% to copy preceding stock tank;
The 7th step; Manufacture paper with pulp into required quantitative paper or cardboard with paper machine; Add relative pulp quality mark and be 2.5% latex coating and carry out dip coated, evenly can make between the fiber of forming paper behind the latex coating and combine closely, form and have the higher pulling force and the paper of water proofing property.
The mixing material that said latex coating is made up of starch, reacting calcium carbonate micro mist, AKD, latex etc. is being paid and paper surface uniformly, forms level and smooth bright and clean surface.
The paper tensile strength of producing with said method is big, and percentage elongation is low, and whiteness is high, and opacity is high, fracture length 3.9km wherein, percentage elongation 1.7%, burst index 2.61kPa.m
2/ g, tear index 4.27mN. m
2/ g, opacity 95% does not add that whiteness is 88.7% under the situation of any brightening agent.
Embodiment 4
A kind of method of manufacturing technology of white clay loaded sheet may further comprise the steps:
The first step; By gross mass, be to make a gift to someone after 40% bleached pulp disperses with the hydrabrusher size degradation to kowtow preceding pulp storage tank accounting for mass fraction, in this stock tank, add the filler BN that accounts for gross mass 60% mass fraction; Be white clay reacting calcium carbonate micro mist, regulate the mass fraction concentration to 6.0% of mixed slurry;
Said reacting calcium carbonate micro mist is the porous white powder of being produced by the alkali recovery white slime recrement, and whiteness is 96%, and density is 0.28BN/cm only
3, particle diameter 25um;
Second step, pull an oar after the beating degree of 55 ° of SR with disc mill, being adjusted to mass fraction to slurry concentration is 5.0% to make a gift to someone and kowtow the back pulp storage tank;
In the 3rd step, paper pulp behind pulp screen and desander purification paper pulp and the mixed slurry of filler BN are made a gift to someone and are copied preceding stock tank;
In the 4th step, the relative pulp quality mark of adding is 2.5% reinforcing agent in slurry, stirs and mixes;
Said reinforcing agent is a kind of water miscible PVA fiber, can directly add in the slurry to mix with paper pulp fiber, copies behind the paper when dry and to combine the generation humidification with paper pulp fiber;
The 5th step added relative pulp quality mark and is 1.0% dispersant again in slurry, stir and mix; Add relative pulp quality mark successively more respectively and be 0.4% retention and drainage aid agent and pulp quality mark relatively and be 2.5% water repellent agent;
Said dispersant is polyethylene glycol oxide PEO, and to become mass fraction be 2% solution to thin up during use, adds in the slurry fiber is evenly disperseed, and guarantees the evenness of paper;
Said retention and drainage aid agent is high molecular polymer such as PAM, and purpose is the worry water speed when accelerating the shaping of l Water Paper page or leaf;
Said water repellent agent is water miscible organic silicon solution, adds paper pulp and can combine the anti-water effect that produces with fiber and reacting calcium carbonate micro mist;
In the 6th step, adding water, to regulate mixed slurry concentration mass fraction be to make a gift to someone after 2.0% to copy preceding stock tank;
The 7th step; Manufacture paper with pulp into required quantitative paper or cardboard with paper machine; Add relative pulp quality mark and be 3.0% latex coating and carry out dip coated, evenly can make between the fiber of forming paper behind the latex coating and combine closely, form and have the higher pulling force and the paper of water proofing property.
Said latex coating is coated on the surface strength that can increase paper in the page for to use carboxylic styrene butadiene latex with infusion process, prevents the paper layering and gives paper anti-water humidity resistance.
The paper tensile strength of producing with said method is big, and percentage elongation is low, and whiteness is high, and opacity is high.Wherein fracture length is 3.9km, and percentage elongation is 1.5%, and burst index is 2.73kPa.m
2G, tear index are 4.51mN. m
2/ g, opacity is 94%, the whiteness that does not add under the situation of any brightening agent is 88.3%.
Embodiment 5
A kind of method of manufacturing technology of white clay loaded sheet may further comprise the steps:
The first step; By gross mass, be to make a gift to someone after 45% bleached pulp disperses with the hydrabrusher size degradation to kowtow preceding pulp storage tank accounting for mass fraction, in this stock tank, add the filler BN that accounts for gross mass 55% mass fraction; Be white clay reacting calcium carbonate micro mist, regulate the mass fraction concentration to 7.0% of mixed slurry;
Said reacting calcium carbonate micro mist is the porous white powder of being produced by the alkali recovery white slime recrement, and whiteness is 89%, and density is 0.20BN/cm only
3, particle diameter 16um;
Second step, pull an oar after the beating degree of 60 ° of SR with disc mill, being adjusted to mass fraction to slurry concentration is 5.5% to make a gift to someone and kowtow the back pulp storage tank;
In the 3rd step, paper pulp behind pulp screen and desander purification paper pulp and the mixed slurry of filler BN are made a gift to someone and are copied preceding stock tank;
In the 4th step, the relative pulp quality mark of adding is 2.0% reinforcing agent in slurry, stirs and mixes;
Said reinforcing agent is a kind of water miscible PVA fiber, can directly add in the slurry to mix with paper pulp fiber, copies behind the paper when dry and to combine the generation humidification with paper pulp fiber;
The 5th step added relative pulp quality mark and is 1.5% dispersant again in slurry, stir and mix; Add relative pulp quality mark successively more respectively and be 0.3% retention and drainage aid agent and pulp quality mark relatively and be 3.0% water repellent agent;
Said dispersant is polyethylene glycol oxide PEO, and to become mass fraction be 3.5% solution to thin up during use, adds in the slurry fiber is evenly disperseed, and guarantees the evenness of paper;
Said retention and drainage aid agent is high molecular polymer such as PAM, and purpose is the worry water speed when accelerating the shaping of l Water Paper page or leaf;
Said water repellent agent is water miscible organic silicon solution, adds paper pulp and can combine the anti-water effect that produces with fiber and reacting calcium carbonate micro mist;
In the 6th step, adding water, to regulate mixed slurry concentration mass fraction be to make a gift to someone after 3% to copy preceding stock tank;
The 7th step; Manufacture paper with pulp into required quantitative paper or cardboard with paper machine; Add relative pulp quality mark and be 3.0% latex coating and carry out dip coated, evenly can make between the fiber of forming paper behind the latex coating and combine closely, form and have the higher pulling force and the paper of water proofing property.
The mixing material that said latex coating is made up of starch, reacting calcium carbonate micro mist, AKD, latex etc. is being paid and paper surface uniformly, forms level and smooth bright and clean surface.
The paper tensile strength of producing with said method is big, and percentage elongation is low, and whiteness is high, and opacity is high, and wherein fracture length is 3.8km, and percentage elongation is 1.6%, and burst index is 2.67kPa.m
2/ g, tear index are 4.31mN. m
2/ g, opacity is 96%, does not add that whiteness is 87.8% under the situation of any brightening agent.
Embodiment 6
A kind of method of manufacturing technology of white clay loaded sheet may further comprise the steps:
The first step; By gross mass, be to make a gift to someone after 48% bleached pulp disperses with the hydrabrusher size degradation to kowtow preceding pulp storage tank accounting for mass fraction, in this stock tank, add the filler BN that accounts for gross mass 52% mass fraction; Be white clay reacting calcium carbonate micro mist, regulate the mass fraction concentration to 8.0% of mixed slurry;
Said reacting calcium carbonate micro mist is the porous white powder of being produced by the alkali recovery white slime recrement, and whiteness is 88%, and density is 0.18BN/cm only
3, particle diameter 17um;
Second step, pull an oar after the beating degree of 65 ° of SR with disc mill, being adjusted to mass fraction to slurry concentration is 6.0% to make a gift to someone and kowtow the back pulp storage tank;
In the 3rd step, paper pulp behind pulp screen and desander purification paper pulp and the mixed slurry of filler BN are made a gift to someone and are copied preceding stock tank;
In the 4th step, the relative pulp quality mark of adding is 2.0% reinforcing agent in slurry, stirs and mixes;
Said reinforcing agent is a kind of water miscible PVA fiber, can directly add in the slurry to mix with paper pulp fiber, copies behind the paper when dry and to combine the generation humidification with paper pulp fiber;
The 5th step added relative pulp quality mark and is 1.0% dispersant again in slurry, stir and mix; Add relative pulp quality mark successively more respectively and be 0.5% retention and drainage aid agent and pulp quality mark relatively and be 3.5% water repellent agent;
Said dispersant is polyethylene glycol oxide PEO, and to become mass fraction be 2.6% solution to thin up during use, adds in the slurry fiber is evenly disperseed, and guarantees the evenness of paper;
Said retention and drainage aid agent is high molecular polymer such as PAM, and purpose is the worry water speed when accelerating the shaping of l Water Paper page or leaf;
Said water repellent agent is water miscible organic silicon solution, adds paper pulp and can combine the anti-water effect that produces with fiber and reacting calcium carbonate micro mist;
In the 6th step, adding water, to regulate mixed slurry concentration mass fraction be to make a gift to someone after 3.0% to copy preceding stock tank;
The 7th step; Manufacture paper with pulp into required quantitative paper or cardboard with paper machine; Add relative pulp quality mark and be 2.5% latex coating and carry out dip coated, evenly can make between the fiber of forming paper behind the latex coating and combine closely, form and have the higher pulling force and the paper of water proofing property.
The mixing material that said latex coating is made up of starch, reacting calcium carbonate micro mist, AKD, latex etc. is being paid and paper surface uniformly, forms level and smooth bright and clean surface.
The paper tensile strength of producing with said method is big, and percentage elongation is low, and whiteness is high, and opacity is high.Wherein fracture length is 3.8km, and percentage elongation is 1.6%, and burst index is 2.65kPa.m
2/ g, tear index are 4.27mN. m
2/ g, opacity is 94%, does not add that whiteness is 86.7% under the situation of any brightening agent.
Claims (10)
1. the production technology of a white clay loaded sheet is characterized in that, may further comprise the steps:
The first step; By gross mass; Accounting for mass fraction is to make a gift to someone after 30% ~ 50% bleached pulp disperses with the hydrabrusher size degradation to kowtow preceding pulp storage tank; In this stock tank, add the filler BN account for gross mass 50% ~ 70% mass fraction, i.e. white clay reacting calcium carbonate micro mist is regulated mass fraction concentration to 6% ~ 10% of mixed slurry;
Second step, pull an oar after the beating degree of 40 ° of SR～80 ° SR with disc mill, being adjusted to mass fraction to slurry concentration is to make a gift to someone after 4% ~ 6% to kowtow the back pulp storage tank;
In the 3rd step, paper pulp behind pulp screen and desander purification paper pulp and the mixed slurry of filler BN are sent into and are copied preceding stock tank;
In the 4th step, the relative pulp quality mark of adding is 1%～5% reinforcing agent in mixed slurry, stirs and mixes;
The 5th step added relative pulp quality mark and is 0.5%～1.5% dispersant again in mixed slurry, stir and mix; Add relative pulp quality mark successively more respectively and be 0.3%～3% retention and drainage aid agent and pulp quality mark relatively and be 1.0%～4.5% water repellent agent;
In the 6th step, adding water, to regulate mixed slurry concentration mass fraction be to make a gift to someone after 2%～3% to copy preceding stock tank;
The 7th step; Manufacture paper with pulp into required quantitative paper or cardboard with paper machine; Add relative pulp quality mark and be 1.5%～5.5% latex coating and carry out dip coated, evenly can make between the fiber of forming paper behind the latex coating and combine closely, form and have the higher pulling force and the paper of water proofing property.
2. the manufacturing technique of a kind of white clay loaded sheet according to claim 1 is characterized in that: may further comprise the steps:
The first step; By gross mass is mass fraction to make a gift to someone after 50% bleached sulphate needlebush pulpboard water power pulper size degradation disperses to kowtow preceding pulp storage tank; In this stock tank, add the filler BN that accounts for gross mass 50% mass fraction; Be white clay reacting calcium carbonate micro mist, regulate the mass fraction concentration to 6.0% of slurry;
Second step, pull an oar after the beating degree of 45 ° of SR with disc mill, being adjusted to mass fraction to slurry concentration is 4.0%, makes a gift to someone and kowtows the back pulp storage tank;
In the 3rd step, paper pulp after pulp screen and desander purification and the mixed slurry of filler BN are made a gift to someone and are copied preceding stock tank;
In the 4th step, the relative pulp quality mark of adding is 1.0% reinforcing agent in slurry, stirs and mixes;
In the 5th step, in slurry, add relative pulp quality mark again and be 0.5% dispersant; Add relative pulp quality mark successively more respectively and be 0.3% retention and drainage aid agent and pulp quality mark relatively and be 1.0% water repellent agent;
In the 6th step, adding water, to regulate the slurry concentration mass fraction be to make a gift to someone after 2.0% to copy preceding stock tank;
In the 7th step, use paper machine to manufacture paper with pulp and quantitatively be 52g/ m
2Paper, add relative pulp quality mark and be 1.5% latex coating and carry out dip coated, evenly can make between the fiber of forming paper behind the latex coating and combine closely, form and have the higher pulling force and the paper of water proofing property.
3. the manufacturing technique of a kind of white clay loaded sheet according to claim 1 is characterized in that: may further comprise the steps:
The first step; By gross mass is mass fraction to make a gift to someone after 30% bleached sulphate needlebush pulpboard water power pulper size degradation disperses to kowtow preceding pulp storage tank; In this stock tank, add the filler BN that accounts for gross mass 70% mass fraction; Be white clay reacting calcium carbonate micro mist, regulate the mass fraction concentration to 8.0% of slurry;
Second step, pull an oar after the beating degree of 70 ° of SR with disc mill, being adjusted to mass fraction to slurry concentration is 5.0%, makes a gift to someone and kowtows the back pulp storage tank;
In the 3rd step, paper pulp behind pulp screen and desander purification paper pulp and the mixed slurry of filler BN are made a gift to someone and are copied preceding stock tank;
In the 4th step, the relative pulp quality mark of adding is 3.0% reinforcing agent in slurry, stirs and mixes;
In the 5th step, in slurry, add relative pulp quality mark again and be 1.0% dispersant; Add relative pulp quality mark successively more respectively and be 0.5% retention and drainage aid agent and pulp quality mark relatively and be 3.0% water repellent agent;
In the 6th step, adding water, to regulate the slurry concentration mass fraction be to make a gift to someone after 3.0% to copy preceding stock tank;
In the 7th step, use paper machine to manufacture paper with pulp and quantitatively be 70g/ m
2Paper, add relative pulp quality mark and be 3.5% latex coating and carry out dip coated, evenly can make between the fiber of forming paper behind the latex coating and combine closely, form and have the higher pulling force and the paper of water proofing property.
4. the manufacturing technique of a kind of white clay loaded sheet according to claim 1 is characterized in that: may further comprise the steps:
The first step; By gross mass, be to make a gift to someone after 35% bleached pulp disperses with the hydrabrusher size degradation to kowtow preceding pulp storage tank accounting for mass fraction, in this stock tank, add the filler BN that accounts for gross mass 65% mass fraction; Be white clay reacting calcium carbonate micro mist, regulate the mass fraction concentration to 7.0% of mixed slurry;
Second step, pull an oar after the beating degree of 50 ° of SR with disc mill, being adjusted to mass fraction to slurry concentration is 4.5% to make a gift to someone and kowtow the back pulp storage tank;
In the 3rd step, paper pulp behind pulp screen and desander purification paper pulp and the mixed slurry of filler BN are made a gift to someone and are copied preceding stock tank;
In the 4th step, the relative pulp quality mark of adding is 2.5% reinforcing agent in slurry, stirs and mixes;
The 5th step added relative pulp quality mark and is 1.5% dispersant again in slurry, stir and mix; Add relative pulp quality mark successively more respectively and be 0.3% retention and drainage aid agent and pulp quality mark relatively and be 2.0% water repellent agent;
In the 6th step, adding water, to regulate mixed slurry concentration mass fraction be to make a gift to someone after 2.0% to copy preceding stock tank;
The 7th step; Manufacture paper with pulp into required quantitative paper or cardboard with paper machine; Add relative pulp quality mark and be 2.5% latex coating and carry out dip coated, evenly can make between the fiber of forming paper behind the latex coating and combine closely, form and have the higher pulling force and the paper of water proofing property.
5. the manufacturing technique of a kind of white clay loaded sheet according to claim 1 is characterized in that: may further comprise the steps:
The first step; By gross mass, be to make a gift to someone after 40% bleached pulp disperses with the hydrabrusher size degradation to kowtow preceding pulp storage tank accounting for mass fraction, in this stock tank, add the filler BN that accounts for gross mass 60% mass fraction; Be white clay reacting calcium carbonate micro mist, regulate the mass fraction concentration to 6.0% of mixed slurry;
Second step, pull an oar after the beating degree of 55 ° of SR with disc mill, being adjusted to mass fraction to slurry concentration is 5.0% to make a gift to someone and kowtow the back pulp storage tank;
In the 3rd step, paper pulp behind pulp screen and desander purification paper pulp and the mixed slurry of filler BN are made a gift to someone and are copied preceding stock tank;
In the 4th step, the relative pulp quality mark of adding is 2.5% reinforcing agent in slurry, stirs and mixes;
The 5th step added relative pulp quality mark and is 1.0% dispersant again in slurry, stir and mix; Add relative pulp quality mark successively more respectively and be 0.4% retention and drainage aid agent and pulp quality mark relatively and be 2.5% water repellent agent;
In the 6th step, adding water, to regulate mixed slurry concentration mass fraction be to make a gift to someone after 2.0% to copy preceding stock tank;
The 7th step; Manufacture paper with pulp into required quantitative paper or cardboard with paper machine; Add relative pulp quality mark and be 3.0% latex coating and carry out dip coated, evenly can make between the fiber of forming paper behind the latex coating and combine closely, form and have the higher pulling force and the paper of water proofing property.
6. the manufacturing technique of a kind of white clay loaded sheet according to claim 1 is characterized in that: may further comprise the steps:
The first step; By gross mass, be to make a gift to someone after 45% bleached pulp disperses with the hydrabrusher size degradation to kowtow preceding pulp storage tank accounting for mass fraction, in this stock tank, add the filler BN that accounts for gross mass 55% mass fraction; Be white clay reacting calcium carbonate micro mist, regulate the mass fraction concentration to 7.0% of mixed slurry;
Second step, pull an oar after the beating degree of 60 ° of SR with disc mill, being adjusted to mass fraction to slurry concentration is 5.5% to make a gift to someone and kowtow the back pulp storage tank;
In the 3rd step, paper pulp behind pulp screen and desander purification paper pulp and the mixed slurry of filler BN are made a gift to someone and are copied preceding stock tank;
In the 4th step, the relative pulp quality mark of adding is 2.0% reinforcing agent in slurry, stirs and mixes;
The 5th step added relative pulp quality mark and is 1.5% dispersant again in slurry, stir and mix; Add relative pulp quality mark successively more respectively and be 0.3% retention and drainage aid agent and pulp quality mark relatively and be 3.0% water repellent agent;
In the 6th step, adding water, to regulate mixed slurry concentration mass fraction be to make a gift to someone after 3% to copy preceding stock tank;
The 7th step; Manufacture paper with pulp into required quantitative paper or cardboard with paper machine; Add relative pulp quality mark and be 3.0% latex coating and carry out dip coated, evenly can make between the fiber of forming paper behind the latex coating and combine closely, form and have the higher pulling force and the paper of water proofing property.
7. the manufacturing technique of a kind of white clay loaded sheet according to claim 1 is characterized in that: may further comprise the steps:
The first step; By gross mass, be to make a gift to someone after 48% bleached pulp disperses with the hydrabrusher size degradation to kowtow preceding pulp storage tank accounting for mass fraction, in this stock tank, add the filler BN that accounts for gross mass 52% mass fraction; Be white clay reacting calcium carbonate micro mist, regulate the mass fraction concentration to 8.0% of mixed slurry;
Second step, pull an oar after the beating degree of 65 ° of SR with disc mill, being adjusted to mass fraction to slurry concentration is 6.0% to make a gift to someone and kowtow the back pulp storage tank;
In the 3rd step, paper pulp behind pulp screen and desander purification paper pulp and the mixed slurry of filler BN are made a gift to someone and are copied preceding stock tank;
In the 4th step, the relative pulp quality mark of adding is 2.0% reinforcing agent in slurry, stirs and mixes;
The 5th step added relative pulp quality mark and is 1.0% dispersant again in slurry, stir and mix; Add relative pulp quality mark successively more respectively and be 0.5% retention and drainage aid agent and pulp quality mark relatively and be 3.5% water repellent agent;
In the 6th step, adding water, to regulate mixed slurry concentration mass fraction be to make a gift to someone after 3.0% to copy preceding stock tank;
The 7th step; Manufacture paper with pulp into required quantitative paper or cardboard with paper machine; Add relative pulp quality mark and be 2.5% latex coating and carry out dip coated, evenly can make between the fiber of forming paper behind the latex coating and combine closely, form and have the higher pulling force and the paper of water proofing property.
8. the manufacturing technique of a kind of white clay loaded sheet according to claim 1 is characterized in that: said reacting calcium carbonate micro mist is the porous white powder of being produced by the alkali recovery white slime recrement, and whiteness is more than 85%, and density is 0.17-0.30BN/cm only
3, particle diameter 15-30um;
Described reinforcing agent is a kind of water miscible PVA fiber;
Said dispersant is polyethylene glycol oxide PEO, and to become mass fraction be 1%～4% solution to thin up during use;
Said retention and drainage aid agent is high molecular polymer such as PAM;
Said water repellent agent is water miscible organic silicon solution.
9. the manufacturing technique of a kind of white clay loaded sheet according to claim 1 is characterized in that: said latex coating is a carboxylic styrene butadiene latex.
10. the manufacturing technique of a kind of white clay loaded sheet according to claim 1; It is characterized in that: the mixing material that said latex coating is made up of starch, reacting calcium carbonate micro mist, AKD, latex etc.; Paying uniformly and paper surface, forming level and smooth bright and clean surface.
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| CN2011103728036A CN102493283A (en) | 2011-11-22 | 2011-11-22 | Technology for producing white clay-filled paper |
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| CN2011103728036A CN102493283A (en) | 2011-11-22 | 2011-11-22 | Technology for producing white clay-filled paper |
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| CN103343479A (en) * | 2013-06-27 | 2013-10-09 | 华南理工大学 | Method for improving AKD (Alkyl Ketene Dimer) sizing efficiency for white mud filled paper material |
| CN108330729A (en) * | 2018-02-11 | 2018-07-27 | 山东太阳纸业股份有限公司 | A kind of white clay filler and its application in culture paper |
| CN111304966A (en) * | 2020-03-26 | 2020-06-19 | 厦门金锐奇工贸有限公司 | Pure white card and preparation method thereof |
| CN113005813A (en) * | 2021-02-24 | 2021-06-22 | 江苏可一文化产业集团股份有限公司 | Preparation process of anti-strike-through printing paper |
| CN113914141A (en) * | 2021-11-05 | 2022-01-11 | 上海纳米技术及应用国家工程研究中心有限公司 | Degradable waterproof paper and preparation method thereof |
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| CN103343479A (en) * | 2013-06-27 | 2013-10-09 | 华南理工大学 | Method for improving AKD (Alkyl Ketene Dimer) sizing efficiency for white mud filled paper material |
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| CN113005813A (en) * | 2021-02-24 | 2021-06-22 | 江苏可一文化产业集团股份有限公司 | Preparation process of anti-strike-through printing paper |
| CN113914141A (en) * | 2021-11-05 | 2022-01-11 | 上海纳米技术及应用国家工程研究中心有限公司 | Degradable waterproof paper and preparation method thereof |
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