CN110080031A - A kind of production technology of the compound dedicated core paper of advanced grey board - Google Patents
A kind of production technology of the compound dedicated core paper of advanced grey board Download PDFInfo
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- CN110080031A CN110080031A CN201910444020.0A CN201910444020A CN110080031A CN 110080031 A CN110080031 A CN 110080031A CN 201910444020 A CN201910444020 A CN 201910444020A CN 110080031 A CN110080031 A CN 110080031A
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/08—Mechanical or thermomechanical pulp
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/14—Secondary fibres
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/01—Waste products, e.g. sludge
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- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to pulping and paper-making production technical field, in particular to the production technology of a kind of compound dedicated core paper of advanced grey board.The production technology is starched without using ONP, and starch adhesive and prime cement are starched using 100%OCC, and good, not stratified at the flatness of paper, the suction glue and adhesive property of paper get a promotion, and meet the requirement of paper in advanced compound chipboard core.Simultaneously, since the core slurry of large percentage with slurry uses OCC slurry, recycling slurry, sawdust pulp, reuse sludge mixing slurry, quantitative, tightness, inter-layer bonding force, thickness and ash content are all ensured, cut off ONP Pulping Line and paper machine lining wet end, the installed power of slurrying, paper machine is thereby reduced, has achieved the purpose that energy-saving, promotion product product paper.Producing compound dedicated core paper and substituting single grey board into the grammes per square metre scope of paper is 280-700g/m2, sandwich layer, inner layer for the compound chipboard of sophisticated multilevel.Through calculating, ton paper production cost saves 70 yuan or so, based on 150,000 tons of annual output, can save 10,500,000 yuan of production cost year.
Description
Technical field
The present invention relates to pulping and paper-making production technical field, in particular to the life of a kind of compound dedicated core paper of advanced grey board
Production. art.
Background technique
Grey board is a kind of industrial millboard, and exquisite book envelope, trip is made for packaging and printing industry as substrate
The products such as the commodity packaging cases such as play picture mosaic, file, letter file, writing case, gift box, drinks, cosmetics.Grey board is divided into list
Grey, double ashes, single ash grey board mainly quantitatively have 280g/m2、300g/m2、350g/m2、400g/m2、450g/m2、500g/m2、
550、600g/m2、650g/m2、700g/m2, the index of single ash grey board concern is quantitative and thickness, it is desirable that quantitative and thickness is equal
One and strict control deviation range, to meet client's manufactured goods packages printing specification, and keep size consistent.In addition, liners
Form and aspect whiteness is uniform, paper flatness is good, the fine and smooth degree of paper is good, not warpage, it is not stratified be also grey board important quality mark
It is quasi-.Using two or multiple single grey boards are laminated by compounding machine, can be made into compound grey board quantitative, that thickness is bigger, compound
Cardboard, which quantifies maximum, can achieve 2300g/m2, thickness 3.8mm meets when client uses to grey board specific quantitative and thickness
It is required that.
Chinese patent ZL201610614831.7 discloses a kind of production method of high thickness grey board of high ash content, including standby
It starches, preparation OCC slurry, ONP slurry, sawdust slurry, recycling slurry are added Hansenula yeast microorganism belonging to genus and are glued in sawdust slurry
Knot agent is cultivated；With slurry, ONP slurry is made grey board liners, OCC slurry, sawdust pulp mixture and recycling slurry press than
Grey board lining, grey board sandwich layer, grey board bottom is respectively prepared in example mixing；It manufactures paper with pulp, above-mentioned online slurry is dehydrated into through wet end
It manufactures paper with pulp out after shape, face lining core bottom be compound, splenium press dewatering, drying section are dry into paper.If but single grey grey board uses ONP disregard message
Paper pulp liners, cost of sizing agent is high, and core paper used in combination board does not need vermicelli, therefore, produces work in the patented technology
It on the basis of skill, needs to research and develop a kind of production technology of compound dedicated core paper of advanced grey board, produces compound dedicated core paper substitution
Single ash grey board is used for compound chipboard sandwich layer, further to promote the product quality grade of grey board, reduces synthesis and is produced into
This, improves product competitiveness.
Summary of the invention
In view of above-mentioned technical problem existing for background technique, it is desirable to provide a kind of life of the advanced compound dedicated core paper of grey board
The advantages of production. art, which need to have both energy-saving, promotion product quality and grade.
To achieve the above object, a kind of production technology of compound dedicated core paper of advanced grey board is inventor provided, including
Following steps:
Slurrying, comprising:
Using brush wood wood chip as raw material, through wood chip defibrator process, fine grinding, two fine grindings, fine screen screening, inclined wire are concentrated together, system
Obtain sawdust pulp；
It recycles each board fine screen tailings, low dense tailings, total trench inclined wire and slurry is concentrated back, collection through slurry production line,
Coarse sizing, one of defibrination, low dense slagging-off, fine screen screening, slurry concentration, two defibrinations, are made recycling slurry；
Using OCC waste paper as raw material, sieved through OCC Pulping Line size degradation, high concentration slagging-off, sizing screening, low dense slagging-off, fine screen
Choosing, polydisc concentration, are made OCC slurry；
Sludge is recycled, after the processing of Treatment of Sludge line, reuse sludge is made；
It is with slurry, comprising:
Starch adhesive, quantitative 65-210g/m are used as using 100%OCC slurry2, on the basis of total slurry amount, the ratio with slurry of starch adhesive is
20-30%；
Prime cement, quantitative 65-210g/m are used as using 100%OCC slurry2, on the basis of total slurry amount, the ratio with slurry of prime cement is
20-30%；
It is starched using OCC slurry, recycling slurry, sawdust pulp, reuse sludge mixing slurry as core, on the basis of total slurry amount, core slurry
Ratio with slurry be 40-60%；And
Wet end drainage and formation, squeezing, drying, press polish, batch, rewinding be packaged, weigh after be put in storage.
It is different from the prior art, above-mentioned technical proposal at least has the advantages that
The advanced compound dedicated core paper surface layer of grey board is starched without using ONP, and starch adhesive and prime cement are starched using 100%OCC, at
The flatness of paper is good, not stratified, and the suction glue and adhesive property of paper get a promotion, and meets paper in advanced compound chipboard core
Requirement.Simultaneously as the core slurry of large percentage with slurry uses OCC slurry, recycling slurry, sawdust pulp, the mixing of reuse sludge
Slurry, paper machine papermaking process are changed to three layers of slurry from four layers of original slurry, cut off ONP Pulping Line and paper machine lining wet end, thereby reduce
Slurrying, paper machine installed power, achieved the purpose that it is energy-saving, promoted product product paper.The grammes per square metre scope is 280-700g/m2,
It produces compound dedicated core paper and substitutes sandwich layer, inner layer that single grey board is used for the compound chipboard of sophisticated multilevel, produce 700-
2300g/m2Advanced compound grey board, quantitative, the thickness of obtained compound grey board strictly reach quality standards range, bonding
Securely, not stratified, not warpage.
Specific embodiment
The following detailed description of a kind of production technology of the advanced compound dedicated core paper of grey board provided by the invention.
A kind of production technology of the compound dedicated core paper of advanced grey board, comprising the following steps:
Slurrying, comprising: using brush wood wood chip as raw material, through wood chip defibrator process, fine grinding, two fine grindings, fine screen are screened, tiltedly together
Net concentration, is made sawdust pulp；It recycles each board fine screen tailings, low dense tailings, total trench inclined wire and slurry is concentrated back, produced through slurry
Collection, coarse sizing, one of defibrination, low dense slagging-off, fine screen screening, the slurry concentration, two defibrinations of line, are made recycling slurry；With
OCC waste paper is raw material, is concentrated through OCC Pulping Line size degradation, high concentration slagging-off, sizing screening, low dense slagging-off, fine screen screening, polydisc,
OCC slurry is made；Sludge is recycled, after the processing of Treatment of Sludge line, reuse sludge is made；
It is with slurry, comprising: starch adhesive, quantitative 65-210g/m are used as using 100%OCC slurry2, on the basis of total slurry amount, starch adhesive
Ratio with slurry is 20-30%；Prime cement, quantitative 65-210g/m are used as using 100%OCC slurry2, on the basis of total slurry amount, prime cement
Ratio with slurry is 20-30%；It is starched using OCC slurry, recycling slurry, sawdust pulp, reuse sludge mixing slurry as core, is with total slurry amount
Benchmark, the ratio with slurry of core slurry are 40-60%；And it wet end drainage and formation, squeezing, drying, press polish, batches, rewinding packing, mistake
It is put in storage after pound.
Critically important improvement is to starch 100%OCC as starch adhesive and prime cement in the present invention, and core slurry using OCC slurry,
Recycling slurry, sawdust pulp and reuse sludge mixing slurry are with slurry, this have the advantage that improve the suction glue and adhesive property at paper,
When ensureing compound dedicated core paper for as cardboard core, inner paper, the suction colloidality energy having had, bonding is secured, to make made paper
There is not lamination problem in plate.And the ratio with slurry of core slurry is higher than starch adhesive and prime cement, and OCC slurry dosage is greatly saved, saves into
This.
Further, with slurry by OCC slurry, recycling slurry, sawdust pulp and the progress of reuse sludge in core slurry, according to determining for paper
The index requests such as amount, thickness, tightness, inter-layer bonding force adjust sandwich layer ratio quantitative and with slurry with slurry, and sawdust pulp is to paper in core slurry
The bulk contribution opened is big, but can also influence the internal bond of paper to a certain extent simultaneously, recycles slurry and reuse sludge then
It is big to the ash content contribution of paper, a large amount of OCC wastepaper as raw material can be saved.Grope through bulk trial, to the OCC in core slurry
Adjustment is optimized in slurry, the ratio with slurry for recycling slurry, sawdust pulp and reuse sludge.
Preferably, on the basis of core slurry is with slurry quantitatively, the ratio with slurry of each component is respectively as follows: sawdust pulp in core slurry
33-36%, recycling slurry 40-43%, reuse sludge 9-10%, OCC starch 15-20%.
It preferably, further include being starched between the starch adhesive and core slurry and in the core before upper wet end dehydration forming
The step of bonding agent is sprayed between prime cement.The bonding agent can be natural polymers (such as starch) or synthesized polymer
Object (such as modified starch).
It is further preferred that the ingredient of the bonding agent includes starch.Natural polymers source is wide, price is low,
Easily biological-degradable, but gel is formed due to easily muddy when gelatinization poor fluidity, the transparency are low and cooling, it limits its application.Cause
This, is mostly used cheap modified starch as bonding agent for a long time, in paper industry, mainly include oxidized starch, sun from
Sonization starch, enzyme converted starch, alkylated starches, carboxymethylated starch, organic phosphate starch, Acetylated potato starch and both sexes are formed sediment
Powder, the bonding agent that the present invention uses can be but are not limited only to sodium carboxymethyl starch or starch.
It is further preferred that being sprayed between the starch adhesive and core slurry, between core slurry and prime cement for the inter-layer bonding force of enhancing paper
The bonding agent is drenched, the dosage of bonding agent described in the advanced compound dedicated core paper of grey board per ton is 15-18kg.
Preferably, the OCC slurry includes the fine slurry of OCC long and OCC fluff pulp, and the beating degree of the fine slurry of the OCC long is 25-
29 ° of SR, the beating degree of the OCC fluff pulp are 28-35 ° of SR.
Preferably, the ash content of the recycling slurry is 30-35%, and beating degree is 11-15 ° of SR.
Preferably, the average grain diameter D of the sawdust pulp50For 0.25-0.45mm, beating degree is 8-10 ° of SR.
Technology contents, construction feature, the objects and the effects for detailed description technical solution, below in conjunction with specific reality
Example is applied to be explained in detail.It should be understood that these embodiments are merely to illustrate the application rather than limitation scope of the present application.
Embodiment 1
A kind of compound dedicated core paper of advanced grey board is produced according to following production technology.
(1) slurrying
Using brush wood wood chip as raw material, through wood chip defibrator process, fine grinding, two fine grindings, fine screen screening, inclined wire are concentrated together, system
Obtain sawdust pulp, the average grain diameter D of the sawdust pulp50For 0.31mm, beating degree is 10 ° of SR；
The use of waste and old boxboard (OCC waste paper) is raw material, feeds intake, the slagging-off of size degradation, high concentration, divides through conventional OCC Pulping Line
Grade screening, low dense slagging-off, fine screen screening, polydisc concentration, and through refining and storage sizing process process, OCC slurry, the OCC slurry is made
Including the fine slurry of OCC long and OCC fluff pulp, the beating degree of the fine slurry of the OCC long is 25 ° of SR, and the beating degree of the OCC fluff pulp is
34°SR；
It recycles each board fine screen tailings, low dense tailings, total trench inclined wire and slurry is concentrated back, collection through slurry production line,
Coarse sizing, one of defibrination, low dense slagging-off, fine screen screening, slurry concentration, two defibrinations, it is 30.2% that ash content, which is made, and beating degree is
The recycling slurry of 14 ° of SR；
(2) with slurry
Starch adhesive, quantitative 70g/m are used as using 100%OCC slurry2, on the basis of total slurry amount, the ratio with slurry of starch adhesive is
25%, it is copied after forebay thickens through surface layer mixing pit, surface layer, surface layer head box is removed in screening before sending surface layer streaming portion to be diluted, netting
Cloth slurry online, as grey board liners；
Prime cement, quantitative 70g/m are used as using 100%OCC slurry2, on the basis of total slurry amount, the ratio with slurry of prime cement is
25%, through bottom mixing pit, destroy forebay and mixed, thicken, mix the prime cement after thickening send bottom streaming portion to be diluted, net
Preceding screening goes the slurry online of paper machine bottom head box cloth, as grey board bottom；
It is starched using OCC slurry, recycling slurry, sawdust pulp, reuse sludge mixing slurry as core, core slurry quantitative 140g/m with slurry2,
On the basis of total slurry amount, the ratio with slurry of core slurry is 50%, wherein starches amount with slurry with the core and is set to benchmark, each group in core slurry
The ratio with slurry divided is respectively as follows: sawdust pulp 33%, recycling slurry 40%, reuse sludge 9%, OCC slurry 18%.It is mixed through sandwich layer
Pond destroies forebay and is mixed, thickened, and mixes before the core slurry after thickening send sandwich layer streaming portion to be diluted, net and screens, removes paper machine core
Layer head box cloth slurry online, as grey board sandwich layer.
Before upper wet end dehydration forming, further include the starch adhesive and core slurry between and the core slurry and prime cement it
Between the step of spraying sodium carboxymethyl starch, the dosage of bonding agent described in the advanced compound dedicated core paper of grey board per ton is 16kg.
(3) it manufactures paper with pulp
After above-mentioned starch adhesive, prime cement, core slurry are through wet end drainage and formation, face core bottom is compound, splenium press dewatering, drying section are dry
It manufactures paper with pulp out into paper.
Then will be carried out at paper press polish, batch, rewinding be packaged, weigh after be put in storage.
Using the quantitative 280g/m for the compound dedicated core paper that production technology described in the present embodiment obtains2, tightness 0.60g/cm3,
Inter-layer bonding force 160J/m2, at paper ash point up to 19%, since starch adhesive and prime cement use 100%OCC slurry, at the smooth of paper
It spends, is not stratified, the suction glue and adhesive property of paper get a promotion, and the use for meeting paper in advanced compound chipboard core is wanted
It asks.Simultaneously as the core slurry of large percentage with slurry uses OCC slurry, recycling slurry, sawdust pulp, reuse sludge mixing slurry, paper machine
Papermaking process is changed to three layers of slurry from four layers of original slurry, cuts off ONP Pulping Line and paper machine lining wet end, thereby reduces slurrying, paper
The installed power of machine, achieved the purpose that it is energy-saving, promote product product paper, due to the saving of cost of material, the saving of power consumption,
The comprehensive production cost of ton paper reduces about 70 yuan/ton of paper, produces compound 150,000 tons of dedicated core paper per year, year can save production cost 10,500,000
Member.
Embodiment 2
Difference from example 1 is that:
(1) slurrying
When sawdust pulp processed, the average grain diameter D of the sawdust pulp50For 0.45mm, beating degree is 8 ° of SR；
When OCC processed is starched, the beating degree of the fine slurry of the OCC long is 29 ° of SR, and the beating degree of the OCC fluff pulp is 32 ° of SR；
When system recycling slurry, the recycling slurry ash content is 35%, and beating degree is 11 ° of SR.
(2) with slurry
Starch adhesive quantifies 65g/m2, on the basis of total slurry amount, the ratio with slurry of starch adhesive is 20%；
Prime cement quantifies 65g/m2, on the basis of total slurry amount, the ratio with slurry of prime cement is 20%；
Core slurry quantitative 195g/m with slurry2, on the basis of total slurry amount, the ratio with slurry of core slurry is 60%, wherein with the core
It starches amount with slurry and is set to benchmark, the ratio with slurry of each component is respectively as follows: sawdust pulp 35%, recycling slurry 40%, reuse dirt in core slurry
Mud 9%, OCC slurry 16%.
The dosage of bonding agent described in the compound dedicated core paper of advanced grey board per ton is 18kg.
Using the quantitative 325g/m for the compound dedicated core paper that production technology described in the present embodiment obtains2, tightness 0.59g/cm3,
Inter-layer bonding force 155J/m2, at paper ash point up to 20%, since starch adhesive and prime cement use 100%OCC slurry, at the smooth of paper
It spends, is not stratified, the suction glue and adhesive property of paper get a promotion, and the use for meeting paper in advanced compound chipboard core is wanted
It asks.Simultaneously as the core slurry of large percentage with slurry uses OCC slurry, recycling slurry, sawdust pulp, reuse sludge mixing slurry, paper machine
Papermaking process is changed to three layers of slurry from four layers of original slurry, cuts off ONP Pulping Line and paper machine lining wet end, thereby reduces slurrying, paper
The installed power of machine, achieved the purpose that it is energy-saving, promote product product paper, due to the saving of cost of material, the saving of power consumption,
The comprehensive production cost of ton paper reduces about 71 yuan/ton of paper, produces compound 150,000 tons of dedicated core paper per year, year can save production cost 10,650,000
Member.
Embodiment 3
With Examples 1 and 2 the difference is that:
(1) slurrying
When sawdust pulp processed, the average grain diameter D of the sawdust pulp50For 0.30mm, beating degree is 9 ° of SR；
When OCC processed is starched, the beating degree of the fine slurry of the OCC long is 27 ° of SR, and the beating degree of the OCC fluff pulp is 30 ° of SR；
When system recycling slurry, the recycling slurry ash content is 33%, and beating degree is 12 ° of SR.
(2) with slurry
Starch adhesive quantifies 210g/m2, on the basis of total slurry amount, the ratio with slurry of starch adhesive is 30%；
Prime cement quantifies 210g/m2, on the basis of total slurry amount, the ratio with slurry of prime cement is 30%；
Core slurry quantitative 280g/m with slurry2, on the basis of total slurry amount, the ratio with slurry of core slurry is 40%, wherein with the core
It starches amount with slurry and is set to benchmark, the ratio with slurry of each component is respectively as follows: sawdust pulp 33%, recycling slurry 43%, reuse dirt in core slurry
Mud 9%, OCC slurry 15%.
The dosage of bonding agent described in the compound dedicated core paper of advanced grey board per ton is 18kg.
Using the quantitative 700g/m for the compound dedicated core paper that production technology described in the present embodiment obtains2, tightness 0.58g/cm3,
Inter-layer bonding force 165J/m2, at paper ash point up to 18%, since starch adhesive and prime cement use 100%OCC slurry, at the smooth of paper
It spends, is not stratified, the suction glue and adhesive property of paper get a promotion, and the use for meeting paper in advanced compound chipboard core is wanted
It asks.Simultaneously as the core slurry of large percentage with slurry uses OCC slurry, recycling slurry, sawdust pulp, reuse sludge mixing slurry, paper machine
Papermaking process is changed to three layers of slurry from four layers of original slurry, cuts off ONP Pulping Line and paper machine lining wet end, thereby reduces slurrying, paper
The installed power of machine, achieved the purpose that it is energy-saving, promote product product paper, due to the saving of cost of material, the saving of power consumption,
The comprehensive production cost of ton paper reduces about 68 yuan/ton of paper, produces compound 180,000 tons of dedicated core paper per year, year can save production cost 12,000,000
Member.
Embodiment 4
With embodiment 3 the difference is that:
(2) with slurry
Starch adhesive quantifies 150g/m2, on the basis of total slurry amount, the ratio with slurry of starch adhesive is 28%；
Prime cement quantifies 150g/m2, on the basis of total slurry amount, the ratio with slurry of prime cement is 28%；
Core slurry quantitative 236g/m with slurry2, on the basis of total slurry amount, the ratio with slurry of core slurry is 44%, wherein with the core
It starches amount with slurry and is set to benchmark, the ratio with slurry of each component is respectively as follows: sawdust pulp 33%, recycling slurry 43%, reuse dirt in core slurry
Mud 9%, OCC slurry 15%.
Using the quantitative 536g/m for the compound dedicated core paper that production technology described in the present embodiment obtains2, tightness 0.57g/cm3,
Inter-layer bonding force 162J/m2, at paper ash point up to 19%, since starch adhesive and prime cement use 100%OCC slurry, at the smooth of paper
It spends, is not stratified, the suction glue and adhesive property of paper get a promotion, and the use for meeting paper in advanced compound chipboard core is wanted
It asks.Simultaneously as the core slurry of large percentage with slurry uses OCC slurry, recycling slurry, sawdust pulp, reuse sludge mixing slurry, paper machine
Papermaking process is changed to three layers of slurry from four layers of original slurry, cuts off ONP Pulping Line and paper machine lining wet end, thereby reduces slurrying, paper
The installed power of machine, achieved the purpose that it is energy-saving, promote product product paper, due to the saving of cost of material, the saving of power consumption,
The comprehensive production cost of ton paper reduces about 67 yuan/ton of paper, produces compound 180,000 tons of dedicated core paper per year, year can save production cost 12,000,000
Member.
It should be noted that being not intended to limit although the various embodiments described above have been described herein
Scope of patent protection of the invention.Therefore, it based on innovative idea of the invention, change that embodiment described herein is carried out and is repaired
Change or the equivalent structure or equivalent process transformation made by using the contents of the present specification, directly or indirectly by the above technology
Scheme is used in other related technical areas, is included within scope of patent protection of the invention.
Claims (8)
1. a kind of production technology of the compound dedicated core paper of advanced grey board, which comprises the following steps:
Slurrying, comprising:
Using brush wood wood chip as raw material, through wood chip defibrator process, fine grinding, two fine grindings, fine screen screening, inclined wire are concentrated together, and wood is made
Bits slurry；
It recycles each board fine screen tailings, low dense tailings, total trench inclined wire and slurry is concentrated back, collection, scalping through slurry production line
Choosing, one of defibrination, low dense slagging-off, fine screen screening, slurry concentration, two defibrinations, are made recycling slurry；
Using OCC waste paper as raw material, is screened through OCC Pulping Line size degradation, high concentration slagging-off, sizing screening, low dense slagging-off, fine screen, is more
OCC slurry is made in disk concentration；
Sludge is recycled, after the processing of Treatment of Sludge line, reuse sludge is made；
It is with slurry, comprising:
Starch adhesive, quantitative 65-210g/m are used as using 100%OCC slurry2, on the basis of total slurry amount, the ratio with slurry of starch adhesive is 20-
30%；
Prime cement, quantitative 65-210g/m are used as using 100%OCC slurry2, on the basis of total slurry amount, the ratio with slurry of prime cement is 20-
30%；
It is starched using OCC slurry, recycling slurry, sawdust pulp, reuse sludge mixing slurry as core, on the basis of total slurry amount, core slurry is matched
Slurry ratio is 40-60%；And
Wet end drainage and formation, squeezing, drying, press polish, batch, rewinding be packaged, weigh after be put in storage.
2. production technology according to claim 1, which is characterized in that each in core slurry on the basis of core slurry amount with slurry
The ratio with slurry of component is respectively as follows: sawdust pulp 33-36%, recycling slurry 40-43%, reuse sludge 9-10%, OCC slurry 15-
20%.
3. production technology according to claim 1, which is characterized in that further include in institute before upper wet end dehydration forming
The step of stating between starch adhesive and core slurry and spraying bonding agent between core slurry and prime cement.
4. production technology according to claim 3, which is characterized in that the ingredient of the bonding agent includes starch.
5. production technology according to claim 4, which is characterized in that glued described in the advanced compound dedicated core paper of grey board per ton
The dosage for connecing agent is 15-18kg.
6. production technology according to claim 1, which is characterized in that the OCC slurry includes the fine slurry of OCC long and the short fibre of OCC
Slurry, the beating degree of the fine slurry of the OCC long are 25-29 ° of SR, and the beating degree of the OCC fluff pulp is 28-35 ° of SR.
7. production technology according to claim 1, which is characterized in that the ash content of the recycling slurry is 30-35%, beating
Degree is 11-15 ° of SR.
8. production technology according to claim 1, which is characterized in that the average grain diameter D of the sawdust pulp50For 0.25-
0.45mm, beating degree are 8-10 ° of SR.
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| CN110939013A (en) * | 2019-12-17 | 2020-03-31 | 浙江金龙纸业有限公司 | Method for manufacturing high-bulk gray board paper |
| CN111118945A (en) * | 2019-12-30 | 2020-05-08 | 玖龙纸业（东莞）有限公司 | Preparation process of core layer slurry |
| CN111691235A (en) * | 2020-06-28 | 2020-09-22 | 浙江金励环保纸业有限公司 | Gray board paper and preparation method thereof |
| CN112064421A (en) * | 2020-09-16 | 2020-12-11 | 联盛纸业（龙海）有限公司 | Dyed grey board paper and production process thereof |
| CN111663370B (en) * | 2020-06-28 | 2021-04-13 | 浙江金励环保纸业有限公司 | High-strength gray paperboard and preparation method thereof |
| CN113622210A (en) * | 2021-08-23 | 2021-11-09 | 浙江金励环保纸业有限公司 | Pulp mixing method of grey paperboard |
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| CN114134760B (en) * | 2021-11-22 | 2023-08-15 | 四川金田纸业有限公司 | Production method of smooth gray paperboard |
| CN115162052A (en) * | 2022-07-26 | 2022-10-11 | 联盛纸业（龙海）有限公司 | High-flatness gray paperboard and preparation method thereof |
| CN117488588A (en) * | 2023-10-12 | 2024-02-02 | 浙江金龙再生资源科技股份有限公司 | Special core paper for compounding high-grade gray paperboard and production process thereof |
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