CN107254797A - The production technology of paper and lower paper on a kind of protecting paper of gypsum board - Google Patents
The production technology of paper and lower paper on a kind of protecting paper of gypsum board Download PDFInfo
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- CN107254797A CN107254797A CN201710685711.0A CN201710685711A CN107254797A CN 107254797 A CN107254797 A CN 107254797A CN 201710685711 A CN201710685711 A CN 201710685711A CN 107254797 A CN107254797 A CN 107254797A
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- Prior art keywords
- paper
- slurry
- gypsum board
- protecting
- workshop section
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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
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/30—Multi-ply
- D21H27/32—Multi-ply with materials applied between the sheets
-
- 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
-
- 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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/16—Sizing or water-repelling agents
-
- 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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/18—Reinforcing agents
- D21H21/20—Wet strength agents
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- Paper (AREA)
- Producing Shaped Articles From Materials (AREA)
Abstract
The production technology of paper and lower paper on a kind of protecting paper of gypsum board, belong to the technical field of producing of protecting paper of gypsum board, fluctuation in the prior art can be solved big, cost is high, the problem of final product quality is unstable, including pulping workshop section, slurrying workshop section and papermaking workshop section, the pulping workshop section of paper includes OCC lines pulping and ONP line pulpings under protecting paper of gypsum board, the slurrying workshop section of paper includes the slurrying of OCC lines and ONP line slurrying under protecting paper of gypsum board, gauze portion uses face on protecting paper of gypsum board, core, bottom three-layer network, gauze portion uses face under protecting paper of gypsum board, lining, core, bottom four-layer network, present invention reduction production cost, improve product quality.
Description
Technical field
The invention belongs to the technical field of producing of protecting paper of gypsum board, and in particular to paper on a kind of protecting paper of gypsum board
And the production technology of lower paper.
Background technology
Protecting paper of gypsum board is exactly when producing plasterboard, to be covered in gypsum core two sides, and can be with gypsum core securely
It is bonded together, that two layers of the cardboard played a protective role to gypsum core.It is divided into paper and lower paper, upper paper refers to produce paper
The cardboard above calcium plaster is covered in during plasterboard（The bottom plate used when constructing, also referred to as backing paper）Its face bottom solid colour.Under
Paper carries the cardboard of calcium plaster when referring to produce Thistle board（The facial tissue used when constructing）.Old protecting paper of gypsum board life
Production. art applying glue, mashing, on net forming, chemicals addition, have certain limitation in terms of squeezing form, there is production
The defect such as fluctuation is big, cost is high, final product quality is unstable.
The content of the invention
The present invention is big for fluctuation in the prior art, and cost is high, and there is provided one kind for the problem of final product quality is unstable
The production technology of paper and lower paper on protecting paper of gypsum board.
The present invention is adopted the following technical scheme that：
The production technology of paper and lower paper on a kind of protecting paper of gypsum board, including pulping workshop section, slurrying workshop section and papermaking workshop section；
The first step, pulping workshop section, including on protecting paper of gypsum board under the pulping workshop section of paper and protecting paper of gypsum board paper pulping work
Section, wherein, the pulping workshop section of paper, comprises the following steps on protecting paper of gypsum board：Packed waste paper first passes through chain mat machine conveying
To bale opener, rotary drum pulping machine is entered after waste paper is discongested out, is passed through after 35-40 DEG C of warm water, repulping of waste paper into concentration be 4%
Paper pulp, the rubbish discharge system such as plastics, cloth；Paper pulp removes after bulk stone by being pumped into HC Cleaner, squeezes into slurry tower
It is standby；
The pulping workshop section of paper includes OCC lines pulping and ONP line pulpings under protecting paper of gypsum board, wherein, OCC lines pulping includes as follows
Step：Packed waste paper first passes through chain mat machine conveying hydrabrusher, adds water after stirring size degradation, tail slurry passes through waterpower smoothing machine
And drum sieve recycled fiber, plastics discharge system；Good slurry feeding HC Cleaner, is removed after bulk stone, squeezes into slurry tower standby；
ONP line pulpings comprise the following steps：Waste paper is delivered to rotary drum pulping machine by chain mat machine, is passed through 35-40 DEG C of warm water, together
When add deinking chemicals：0.8-1.0kg/ tons of waste paper of deinking agent, 25-30kg/ tons of waste paper of hydrogen peroxide, sodium hydroxide 20-25kg/
Ton waste paper, 10-15kg/ ton waste paper of sodium metasilicate, size degradation into concentration be 4% paper pulp, the rubbish discharge system such as plastics, cloth；Paper pulp
By being pumped into HC Cleaner, remove after bulk stone, squeeze into slurry tower standby；
Second step, slurrying workshop section, including on protecting paper of gypsum board under the slurrying workshop section of paper and protecting paper of gypsum board paper slurrying work
Section, wherein, the slurrying workshop section of paper, comprises the following steps on protecting paper of gypsum board：The slurry that pulping workshop is come first passes through scalping sieve
Slurry is selected, tail slurry sends rotary drum pulping machine, plastic sheet discharge system back to by the fiber of slag draining and separating machine separator well；Good slurry passes through two
Long, medium and short fibre stuff, after long stuff removes tiny gravel through too low dense scummer, warp are formed after secondary classifying screen classification
Cross fine screen and further screen slurry, then polydisc thickener, which is concentrated into after 10% mass concentration, enters heat partition system, control temperature
100-105 DEG C, disk mill gap 0.15mm are spent, disperses sicker to naked eyes None- identified, is beaten to form mashing finally by mill
Spend for 40 ± 2 ° of SR, slurry that concentration is 4% it is standby；Middle fibre stuff passes through low dense scummer, polydisc thickener, heat partition system
After system, mill mashing, the slurry that beating degree is 40 ± 2 ° of SR, concentration is 4% is formed standby；Chopped fiber through too low dense scummer and
Concentration is formed after polydisc thickener standby for 4% slurry；
The slurrying workshop section of paper under protecting paper of gypsum board, including the slurrying of OCC lines and ONP line slurrying, wherein, the slurrying of OCC lines is included such as
Lower step：The slurry that pulping workshop is come first passes through scalping screening slurry, and tail slurry is sent back to by the fiber of slag draining and separating machine separator well
Hydrabrusher, plastic sheet discharge system；After good slurry is classified by classifying screen, long and short fibre stuff, long stuff warp are formed
Too low dense scummer is removed after tiny gravel, further screens slurry by fine screen, then polydisc thickener is concentrated into 10% matter
Measure and enter heat partition system after concentration, 100-105 DEG C of temperature of control, disk mill gap 0.15mm, disperseing sicker to naked eyes can not
Identification, is beaten that to form the slurry that beating degree is 40 ± 2 ° of SR, concentration is 4% standby finally by mill；Short stock is through too low
It is that the slurry that 40-43 ° of SR, concentration are 4% is standby by high consistency beating formation beating degree after dense scummer and polydisc thickener；
ONP line slurrying comprises the following steps：The slurry that pulping workshop is come first passes through scalping screening slurry, and tail slurry sends rotary drum pulping back to
Machine, good slurry enters flotation cell, and then the ink flotation discharge system in newspaper is removed after tiny gravel by low dense scummer
Slurry is further screened by fine screen, polydisc thickener is subsequently entered and is concentrated into after 10% mass concentration into heat partition system,
105-110 DEG C of temperature, disk mill gap 0.13mm are controlled, disperses sicker to naked eyes None- identified, finally feeding slurry tower is standby；
3rd step, papermaking workshop section, including on protecting paper of gypsum board under the papermaking workshop section of paper and protecting paper of gypsum board paper paper maker
Section, wherein, the papermaking workshop section of paper, comprises the following steps on protecting paper of gypsum board：Slip house come slurry by approach system,
I.e. after fan pump, pressurized screen, form the slurry that concentration is 0.4%-0.8% and online, approach system additionization are sprayed by head box
Product are as follows：4kg/ tons of paper of starch, 1-3kg/ tons of paper of wet strength agent, 5-10kg/ tons of paper of drying strengthening agent in slurry, punching slurry are added before starching pump
Added after pump and dry powder retention agent 0.3- is added before 15-20kg/ tons of paper of aluminum sulfate, 2.5-3kg/ tons of paper of ASA sizing agents, pressurized screen
0.6kg/ tons of paper of filter aid are added after 0.4kg/ tons of paper, pressurized screen.Wet end is using 3 layers of net（Face, core, bottom）, surface layer is middle fiber
Vermicelli, core, bottom are long and short fiber in mass ratio 5:6 mixed slurries, are dehydrated to 10-14% mass dryness fractions, press section by dewatering elements
Be made up of big roll neck+boots pressure, go out splenium mass dryness fraction for 50%, by front baking, table glue, after dry, batch, most afterwards through rewinding machine rewinding into
The paper roll of different size, into storehouse.Table glue surface, bottom starch concentration are 6%.
Control into paper water imbibition surface layer 20-30g/m2, bottom 30-50g/ m2, hot water infiltration 3000-3600s；
Preferably, in the chemicals that paper approach system is added on protecting paper of gypsum board, 2kg/ tons of paper of wet strength agent；
The papermaking workshop section of paper, comprises the following steps under protecting paper of gypsum board：The slurry that slip house comes is rushed by approach system
After stock pump, pressurized screen, form the slurry that concentration is 0.4%-0.8% and online is sprayed by head box, approach system adds chemicals
It is as follows：4kg/ tons of paper of starch, 1-5kg/ tons of paper of wet strength agent, 10-15kg/ tons of paper of drying strengthening agent, fan pump in slurry are added before starching pump
Add afterwards and dry powder retention agent 0.3- is added before 15-20kg/ tons of paper of aluminum sulfate, 2.5-3kg/ tons of paper of ASA sizing agents, pressurized screen
0.6kg/ tons of paper of filter aid are added after 0.4kg/ tons of paper, pressurized screen, while adding different dyes as needed.Wet end uses 4 layers
Net（Face, lining, core, bottom）, surface layer is Deinking Pulp vermicelli, and lining, core, bottom are long and short fiber according to mass ratio 6:4 mixed slurries, lead to
Cross dewatering elements to be dehydrated to 10-14% mass dryness fractions, press section is made up of big roll neck+boots pressure, go out splenium mass dryness fraction for 50%, by front baking,
Table glue, dry, batch afterwards, most afterwards through rewinding machine rewinding into different size paper roll, into storehouse.Table glue surface, bottom starch concentration
For 6%.
Control into paper water imbibition surface layer 20-30g/ m2, bottom 30-40g/ m2, hot water infiltration 3000-3600s.
Preferably, in the chemicals that paper approach system is added under protecting paper of gypsum board, 4kg/ tons of paper of wet strength agent.
Beneficial effects of the present invention are as follows：
1. the present invention uses waste paper for raw material, raw material of papermaking fiber is saved, meanwhile, waste paper pulp-making is former compared to timber and careless class
Expect slurrying, reduce cooking process, saved the consumption of chemicals, no black liquor is produced, and significantly reduces pollutional load, so,
Investment reduction of the present invention, saves the energy, pollution abatement, meets national environmental protection policy.
2. paper employs fast maturation on ASA sizing agents, machine, applying glue stabilization, quality height on protecting paper of gypsum board of the present invention；
Using three formable layer nets, wet end energy consumption is reduced, while middle fiber vermicelli cause surface layer evenness high, surface is moist；Add
Wet strength agent, improves hygral expansion so that during plaster plate making, the wetted rear intensity of paper is still higher；Press section is used
New boots pressure technology, improves out squeezing mass dryness fraction, reduction drying portion steam consumption.In a word, present invention process improves paper machine fortune
Row, reduces production cost, improves product quality.
3. paper employs fast maturation on ASA sizing agents, machine, applying glue stabilization, quality height under protecting paper of gypsum board of the present invention；
Chopped fiber uses high consistency beating technique, improves paper strength, the useless consumption of reduction raw material Sino-U.S.；Wet strength agent is added, is improved wet
Expansion so that during plaster plate making, the wetted rear intensity of paper is still higher；Press section is carried using new boots pressure technology
It is higher by squeezing mass dryness fraction, reduction drying portion steam consumption.In a word, present invention process improves paper machine runnability, reduces production cost,
Improve product quality.
Embodiment
The production technology of paper and lower paper on a kind of protecting paper of gypsum board, including pulping workshop section, slurrying workshop section and papermaking workshop section；
The first step, pulping workshop section, including on protecting paper of gypsum board under the pulping workshop section of paper and protecting paper of gypsum board paper pulping work
Section, wherein, the pulping workshop section of paper, comprises the following steps on protecting paper of gypsum board：Packed waste paper first passes through chain mat machine conveying
To bale opener, rotary drum pulping machine is entered after waste paper is discongested out, is passed through after 35-40 DEG C of warm water, repulping of waste paper into concentration be 4%
Paper pulp, the rubbish discharge system such as plastics, cloth；Paper pulp removes after bulk stone by being pumped into HC Cleaner, squeezes into slurry tower
It is standby；
The pulping workshop section of paper includes OCC lines pulping and ONP line pulpings under protecting paper of gypsum board, wherein, OCC lines pulping includes as follows
Step：Packed waste paper first passes through chain mat machine conveying hydrabrusher, adds water after stirring size degradation, tail slurry passes through waterpower smoothing machine
And drum sieve recycled fiber, plastics discharge system；Good slurry feeding HC Cleaner, is removed after bulk stone, squeezes into slurry tower standby；
ONP line pulpings comprise the following steps：Waste paper is delivered to rotary drum pulping machine by chain mat machine, is passed through 35-40 DEG C of warm water, together
When add deinking chemicals：0.8-1.0kg/ tons of waste paper of deinking agent, 25-30kg/ tons of waste paper of hydrogen peroxide, sodium hydroxide 20-25kg/
Ton waste paper, 10-15kg/ ton waste paper of sodium metasilicate, size degradation into concentration be 4% paper pulp, the rubbish discharge system such as plastics, cloth；Paper pulp
By being pumped into HC Cleaner, remove after bulk stone, squeeze into slurry tower standby；
Second step, slurrying workshop section, including on protecting paper of gypsum board under the slurrying workshop section of paper and protecting paper of gypsum board paper slurrying work
Section, wherein, the slurrying workshop section of paper, comprises the following steps on protecting paper of gypsum board：The slurry that pulping workshop is come first passes through scalping sieve
Slurry is selected, tail slurry sends rotary drum pulping machine, plastic sheet discharge system back to by the fiber of slag draining and separating machine separator well；Good slurry passes through two
Long, medium and short fibre stuff, after long stuff removes tiny gravel through too low dense scummer, warp are formed after secondary classifying screen classification
Cross fine screen and further screen slurry, then polydisc thickener, which is concentrated into after 10% mass concentration, enters heat partition system, control temperature
100-105 DEG C, disk mill gap 0.15mm are spent, disperses sicker to naked eyes None- identified, is beaten to form mashing finally by mill
Spend for 40 ± 2 ° of SR, slurry that concentration is 4% it is standby；Middle fibre stuff passes through low dense scummer, polydisc thickener, heat partition system
After system, mill mashing, the slurry that beating degree is 40 ± 2 ° of SR, concentration is 4% is formed standby；Chopped fiber through too low dense scummer and
Concentration is formed after polydisc thickener standby for 4% slurry；
The slurrying workshop section of paper under protecting paper of gypsum board, including the slurrying of OCC lines and ONP line slurrying, wherein, the slurrying of OCC lines is included such as
Lower step：The slurry that pulping workshop is come first passes through scalping screening slurry, and tail slurry is sent back to by the fiber of slag draining and separating machine separator well
Hydrabrusher, plastic sheet discharge system；After good slurry is classified by classifying screen, long and short fibre stuff, long stuff warp are formed
Too low dense scummer is removed after tiny gravel, further screens slurry by fine screen, then polydisc thickener is concentrated into 10% matter
Measure and enter heat partition system after concentration, 100-105 DEG C of temperature of control, disk mill gap 0.15mm, disperseing sicker to naked eyes can not
Identification, is beaten that to form the slurry that beating degree is 40 ± 2 ° of SR, concentration is 4% standby finally by mill；Short stock is through too low
It is that the slurry that 40-43 ° of SR, concentration are 4% is standby by high consistency beating formation beating degree after dense scummer and polydisc thickener；
ONP line slurrying comprises the following steps：The slurry that pulping workshop is come first passes through scalping screening slurry, and tail slurry sends rotary drum pulping back to
Machine, good slurry enters flotation cell, and then the ink flotation discharge system in newspaper is removed after tiny gravel by low dense scummer
Slurry is further screened by fine screen, polydisc thickener is subsequently entered and is concentrated into after 10% mass concentration into heat partition system,
105-110 DEG C of temperature, disk mill gap 0.13mm are controlled, disperses sicker to naked eyes None- identified, finally feeding slurry tower is standby；
3rd step, papermaking workshop section, including on protecting paper of gypsum board under the papermaking workshop section of paper and protecting paper of gypsum board paper paper maker
Section, wherein, the papermaking workshop section of paper, comprises the following steps on protecting paper of gypsum board：Slip house come slurry by approach system,
I.e. after fan pump, pressurized screen, form the slurry that concentration is 0.4%-0.8% and online, approach system additionization are sprayed by head box
Product are as follows：4kg/ tons of paper of starch, 1-3kg/ tons of paper of wet strength agent, 5-10kg/ tons of paper of drying strengthening agent in slurry, punching slurry are added before starching pump
Added after pump and dry powder retention agent 0.3- is added before 15-20kg/ tons of paper of aluminum sulfate, 2.5-3kg/ tons of paper of ASA sizing agents, pressurized screen
0.6kg/ tons of paper of filter aid are added after 0.4kg/ tons of paper, pressurized screen.Wet end is using 3 layers of net（Face, core, bottom）, surface layer is middle fiber
Vermicelli, core, bottom are long and short fiber in mass ratio 5:6 mixed slurries, are dehydrated to 10-14% mass dryness fractions, press section by dewatering elements
Be made up of big roll neck+boots pressure, go out splenium mass dryness fraction for 50%, by front baking, table glue, after dry, batch, most afterwards through rewinding machine rewinding into
The paper roll of different size, into storehouse.Table glue surface, bottom starch concentration are 6%.
Control into paper water imbibition surface layer 20-30g/m2, bottom 30-50g/ m2, hot water infiltration 3000-3600s；
Preferably, in the chemicals that paper approach system is added on protecting paper of gypsum board, 2kg/ tons of paper of wet strength agent；
The papermaking workshop section of paper, comprises the following steps under protecting paper of gypsum board：The slurry that slip house comes is rushed by approach system
After stock pump, pressurized screen, form the slurry that concentration is 0.4%-0.8% and online is sprayed by head box, approach system adds chemicals
It is as follows：4kg/ tons of paper of starch, 1-5kg/ tons of paper of wet strength agent, 10-15kg/ tons of paper of drying strengthening agent, fan pump in slurry are added before starching pump
Add afterwards and dry powder retention agent 0.3- is added before 15-20kg/ tons of paper of aluminum sulfate, 2.5-3kg/ tons of paper of ASA sizing agents, pressurized screen
0.6kg/ tons of paper of filter aid are added after 0.4kg/ tons of paper, pressurized screen, while adding different dyes as needed.Wet end uses 4 layers
Net（Face, lining, core, bottom）, surface layer is Deinking Pulp vermicelli, and lining, core, bottom are long and short fiber according to mass ratio 6:4 mixed slurries, lead to
Cross dewatering elements to be dehydrated to 10-14% mass dryness fractions, press section is made up of big roll neck+boots pressure, go out splenium mass dryness fraction for 50%, by front baking,
Table glue, dry, batch afterwards, most afterwards through rewinding machine rewinding into different size paper roll, into storehouse.Table glue surface, bottom starch concentration
For 6%.
Control into paper water imbibition surface layer 20-30g/ m2, bottom 30-40g/ m2, hot water infiltration 3000-3600s.
Preferably, in the chemicals that paper approach system is added under protecting paper of gypsum board, 4kg/ tons of paper of wet strength agent.
Paper on embodiment, production protecting paper of gypsum board
First, pilot project
Produce paper on protecting paper of gypsum board.
2nd, process of the test
1. slurry is pre-processed
OCC processing parameters：The slurry that pulping comes, by classifying screen, is divided into three kinds of slurries of long, medium and short fiber by scalping.
Long stuff is through too low dense scummer, fine screen, polydisc thickener, heat partition system, 100-105 DEG C of heat partition temperature, mill
Gap 0.15mm, is controlled standby in 40 ± 2 ° of SR by beating degree after mill；Middle fibre stuff is dense by low dense scummer, polydisc
After contracting machine, heat partition system, mill mashing, the slurry that beating degree is 40 ± 2 ° of SR, concentration is 4% or so is formed standby；Chopped fiber
Concentration is formed after too low dense scummer and polydisc thickener standby for 4% or so slurry.
2. papermaking
1. wet end chemistry is on the basis of existing chemicals, the use of optimization ASA and gelatinized starch, meets water suction and permeated with hot water
Index, while introducing wet strength agent, controls into paper hygral expansion >=2.0%.
2. press section is squeezed by the big roll-in of vacuum preloading+twice and transform big roll-in squeezing+boots pressure as, test out squeezing mass dryness fraction and
The drying portion steam consumption.
3rd, test data
1. wet strength agent is tried out
| Time | Data | Remarks |
| 7:00 | Hygral expansion 1.5% | |
| 8:00 | Hygral expansion 1.5% | 1.0kg/ tons of paper of wet strengthening agent |
| 9:00 | Hygral expansion 1.6% | |
| 10:00 | Hygral expansion 1.8% | |
| 11:00 | Hygral expansion 1.8% | |
| 12:00 | Hygral expansion 2.0% | 2.0kg/ tons of paper of wet strengthening agent |
| 13:00 | Hygral expansion 2.1% | |
| 14:00 | Hygral expansion 2.1% | |
| 15:00 | Hygral expansion 2.2% | |
| 16:00 | Hygral expansion 2.2% | 3.0kg/ tons of paper of wet strengthening agent |
| 17:00 | Hygral expansion 2.3% | |
| 18:00 | Hygral expansion 2.4% | |
| 19:00 | Hygral expansion 2.5% |
2. original press section is squeezed using the big roll-in of vacuum preloading+twice, go out to squeeze mass dryness fraction 47%, drying portion steam consumption is 1.76
Ton steam/ton paper, is changed to after big roll-in squeezing+boots pressure, goes out to squeeze mass dryness fraction and brings up to 50%, and 1.61 tons of steam of drying portion steam consumption/
Ton paper.
4th, test result analysis
1st, wet strength agent adds 2kg/ ton hours, into paper hygral expansion >=2.0%, when consumption increase, hygral expansion increase, but cost is therewith
Increase, it is uneconomical.
2nd, the transformation of press section improves page and goes out to squeeze mass dryness fraction 3%, and drying portion steam consumption reduces 8.5%, energy-conservation effect
Fruit is substantially.
5th, conclusion
This experiment is paper on production Novel gypsum board mask paper, using new internal sizing agent ASA, and in existing chemicals base
Wet strength agent is added on plinth, paper hygral expansion is improved into so that intensity increase during gypsum sheet metal forming；The transformation saving of press section simultaneously
Papermaking steam consumption, reduces production cost, increases product quality；In addition, the upper paper of production, is molded using three-layer network, it is fine in
Slurry vermicelli are tieed up, evenness is high, and energy consumption is low.
Paper under embodiment, production protecting paper of gypsum board
First, pilot project
Produce paper under protecting paper of gypsum board.
2nd, process of the test
1. slurry is pre-processed
Deinking Pulp production line process parameter：According to different ratios of raw materials, adjustment adds deinking chemicals：Deinking agent 0.8-1.0kg/
Ton waste paper, 25-30kg/ tons of waste paper of hydrogen peroxide, 20-25kg/ tons of waste paper of sodium hydroxide, 10-15kg/ tons of waste paper of sodium metasilicate, other
Technique is constant.
OCC processing parameters：The slurry that pulping comes controls length fibre classification mass ratio by scalping, classifying screen
For 6:4, long fibre passes through heat partition, and 100-105 DEG C of heat partition temperature, disk mill gap 0.15mm pass through beating degree control after mill
System is standby in 40 ± 2 ° of SR；Chopped fiber controls 40-43 ° of SR of beating degree after high consistency beating, and other techniques are constant.
2. papermaking
（1）Wet end chemistry is on the basis of existing chemicals, the use of optimization ASA and gelatinized starch, meets water suction and is permeated with hot water
Index, while introducing wet strength agent, controls into paper hygral expansion >=2.5%.
（2）Press section is squeezed by the big roll-in of vacuum preloading+twice and transform big roll-in squeezing+boots pressure as, test out squeezing mass dryness fraction and
The drying portion steam consumption.
3rd, test data
1. wet strength agent is tried out
| Time | Data | Remarks |
| 7:00 | Hygral expansion 1.5% | |
| 8:00 | Hygral expansion 1.6% | 1.0kg/ tons of paper of wet strengthening agent |
| 9:00 | Hygral expansion 1.7% | |
| 10:00 | Hygral expansion 1.7% | |
| 11:00 | Hygral expansion 1.8% | |
| 12:00 | Hygral expansion 2.0% | 2.0kg/ tons of paper of wet strengthening agent |
| 13:00 | Hygral expansion 2.1% | |
| 14:00 | Hygral expansion 2.2% | |
| 15:00 | Hygral expansion 2.2% | |
| 16:00 | Hygral expansion 2.2% | 3.0kg/ tons of paper of wet strengthening agent |
| 17:00 | Hygral expansion 2.3% | |
| 18:00 | Hygral expansion 2.4% | |
| 19:00 | Hygral expansion 2.5% | 4.0kg/ tons of paper of wet strengthening agent |
| 20:00 | Hygral expansion 2.5% | |
| 21:00 | Hygral expansion 2.6% | |
| 22:00 | Hygral expansion 2.6% | 5.0kg/ tons of paper of wet strengthening agent |
| 23:00 | Hygral expansion 2.6% | |
| 24:00 | Hygral expansion 2.6% |
2. original press section is squeezed using the big roll-in of vacuum preloading+twice, go out to squeeze mass dryness fraction 46-47%, drying portion steam consumption is
1.80 tons of steam/ton paper, are changed to after big roll-in squeezing+boots pressure, go out to squeeze mass dryness fraction and bring up to 49-50%, drying portion steam consumption 1.64
Ton steam/ton paper.
4th, test result analysis
1. the proof test of wet strength agent can be seen that just be initially added into wet strengthening agent for 1.0kg/ ton paper when, hygral expansion raising
Under amplitude, show that wet strength agent addition is low, first with system in anionic trash react so that reduce and fiber combination；
With the increase of wet strengthening agent, start to step up into paper hygral expansion, when consumption is 4kg/ tons of paper, hygral expansion touches the mark
It is required that, then consumption is improved, hygral expansion is difficult to improve, and shows system saturation, excessive wet strength agent can not reach with fibration
Using effect, while consumption increase, cost increase.
2. the transformation of press section, which improves page, goes out to squeeze mass dryness fraction 3%, drying portion steam consumption reduces 8.9%, energy-conservation effect
Fruit is substantially.
5th, conclusion
This experiment is paper under production Novel gypsum board mask paper, slurrying chopped fiber high consistency beating technique is combined, using new
Internal sizing agent ASA, and wet strength agent is added on the basis of existing chemicals, improve into paper hygral expansion so that gypsum sheet metal forming
Shi Qiangdu increases；Papermaking steam consumption has been saved in the transformation of press section simultaneously, reduces production cost, increases product quality.
Claims (10)
1. the production technology of paper and lower paper on a kind of protecting paper of gypsum board, it is characterised in that：Including pulping workshop section, slurrying workshop section and
Papermaking workshop section；
Wherein, pulping workshop section includes the pulping workshop section of paper and the pulping workshop section of paper under protecting paper of gypsum board on protecting paper of gypsum board,
The slurrying workshop section of paper, papermaking workshop section bag under slurrying workshop section and protecting paper of gypsum board of the slurrying workshop section including paper on protecting paper of gypsum board
Include the papermaking workshop section of paper on protecting paper of gypsum board and the papermaking workshop section of paper under protecting paper of gypsum board；
Wherein, the pulping workshop section of paper includes paper under OCC lines pulping and ONP line pulpings, protecting paper of gypsum board under protecting paper of gypsum board
Slurrying workshop section include the slurrying of OCC lines and ONP line slurrying.
2. the production technology of paper and lower paper on a kind of protecting paper of gypsum board according to claim 1, it is characterised in that：Gypsum
The pulping workshop section of paper, comprises the following steps on plate mask paper：Packed waste paper first passes through chain mat machine and is delivered to bale opener, will be useless
Paper discongest out after enter rotary drum pulping machine, be passed through after 35-40 DEG C of water, repulping of waste paper into concentration be 4% paper pulp, plastics, cloth rubbish
Rubbish discharge system；Paper pulp is removed after bulk stone by being pumped into HC Cleaner, squeezes into slurry tower standby；
OCC line pulpings under protecting paper of gypsum board in the pulping workshop section of paper, comprise the following steps：Packed waste paper first passes through chain
Trigger conveys hydrabrusher, after the stirring size degradation that adds water, and tail slurry passes through waterpower smoothing machine and drum sieve recycled fiber, plastics discharge
System；Good slurry feeding HC Cleaner, is removed after bulk stone, squeezes into slurry tower standby；
ONP line pulpings under protecting paper of gypsum board in the pulping workshop section of paper, comprise the following steps：Waste paper passes through chain mat machine, conveying
To rotary drum pulping machine, be passed through 35-40 DEG C of water, at the same add deinking chemicals, size degradation into concentration be 4% paper pulp, plastics, cloth
Deng rubbish discharge system；Paper pulp is removed after bulk stone by being pumped into HC Cleaner, squeezes into slurry tower standby.
3. the production technology of paper and lower paper on a kind of protecting paper of gypsum board according to claim 1, it is characterised in that：Gypsum
The slurrying workshop section of paper, comprises the following steps on plate mask paper：The slurry that pulping workshop is come first passes through scalping screening slurry, and tail slurry leads to
The fiber for crossing slag draining and separating machine separator well sends rotary drum pulping machine, plastic sheet discharge system back to；Good slurry is classified by classifying screen twice
Long, medium and short fibre stuff is formed afterwards, it is further by fine screen after long stuff removes tiny gravel through too low dense scummer
Slurry is screened, then polydisc thickener, which is concentrated into after 10% mass concentration, enters heat partition system, 100-105 DEG C of temperature of control,
Disk mill gap 0.15mm, disperses sicker, the slurry to form that beating degree is 40 ± 2 ° of SR, concentration is 4% is beaten finally by mill
It is standby；After middle fibre stuff is by low dense scummer, polydisc thickener, heat partition system, mill mashing, it is 40 to form beating degree
± 2 ° of SR, concentration are standby for 4% slurry；Chopped fiber forms the slurry that concentration is 4% after too low dense scummer and polydisc thickener
Material is standby；
OCC line slurrying under protecting paper of gypsum board in the slurrying workshop section of paper comprises the following steps：The slurry that pulping workshop is come first is passed through
Scalping screening slurry is crossed, tail slurry sends hydrabrusher, plastic sheet discharge system back to by the fiber of slag draining and separating machine separator well；It is good
After slurry is classified by classifying screen, the slurrying of paper in long and short fibre stuff, the process and protecting paper of gypsum board of long stuff is formed
Long stuff identical aftertreatment technology in workshop section, forms the slurry that beating degree is 40 ± 2 ° of SR, concentration is 4% standby；It is short
Fibre stuff is that 40-43 ° of SR, concentration are by high consistency beating formation beating degree after too low dense scummer and polydisc thickener
4% slurry is standby；
ONP line slurrying under protecting paper of gypsum board in the slurrying workshop section of paper comprises the following steps：The slurry that pulping workshop is come first is passed through
Scalping screening slurry is crossed, tail slurry sends rotary drum pulping machine back to, and good slurry enters flotation cell, by the ink flotation discharge system in newspaper,
Then removed by low dense scummer after tiny gravel, further screen slurry by fine screen, subsequently enter polydisc thickener dense
It is reduced to after 10% mass concentration and enters heat partition system, 105-110 DEG C of temperature of control, disk mill gap 0.13mm disperses gluing
Thing, finally feeding slurry tower is standby.
4. the production technology of paper and lower paper on a kind of protecting paper of gypsum board according to claim 1, it is characterised in that：Gypsum
The papermaking workshop section of paper and lower paper, comprises the following steps on plate mask paper：Paper slip house and plasterboard shield on protecting paper of gypsum board
The slurry that paper slip house comes under facial tissue, respectively by approach system, i.e., after fan pump, pressurized screen, forming concentration respectively is
0.4%-0.8% slurry, is sprayed by head box surf the Net respectively, approach system is separately added into chemicals：Slurry is added before starching pump
Added after interior starch, wet strength agent, drying strengthening agent, fan pump and dry powder retention agent, pressure are added before aluminum sulfate, ASA sizing agents, pressurized screen
Filter aid is added after sieve, respectively by wet end composite molding after, be dehydrated by dewatering elements to 10-14% mass dryness fractions, press section is by big
Roll neck+boots pressure composition, it is 50% to go out splenium mass dryness fraction, by front baking, table glue, after dry, batch, most afterwards through rewinding machine rewinding into difference
The paper roll of specification, into storehouse.
5. the production technology of paper and lower paper on a kind of protecting paper of gypsum board according to claim 2, it is characterised in that：Gypsum
The deinking chemicals in ONP line pulpings under plate mask paper in the pulping workshop section of paper include：0.8-1.0kg/ tons of waste paper of deinking agent,
25-30kg/ tons of waste paper of hydrogen peroxide, 20-25kg/ tons of waste paper of sodium hydroxide, 10-15kg/ tons of waste paper of sodium metasilicate.
6. the production technology of paper and lower paper on a kind of protecting paper of gypsum board according to claim 4, it is characterised in that：Gypsum
Paper and the chemicals of Xia Zhizhong papermaking workshop section approach system addition are respectively on plate mask paper：Paper streaming system on protecting paper of gypsum board
The chemicals that system is added：4kg/ tons of paper of starch, 1-3kg/ tons of paper of wet strength agent, 5-10kg/ tons of paper of drying strengthening agent, aluminum sulfate 15- in slurry
20kg/ tons of paper, 2.5-3kg/ tons of paper of ASA sizing agents, 0.3-0.4kg/ tons of paper of dry powder retention agent, 0.6kg/ tons of paper of filter aid；Stone
The chemicals that paper approach system is added under cream plate mask paper：4kg/ tons of paper of starch, 1-5kg/ tons of paper of wet strength agent, drying strengthening agent in slurry
10-15kg/ tons of paper, 15-20kg/ tons of paper of aluminum sulfate, 2.5-3kg/ tons of paper of ASA sizing agents, 0.3-0.4kg/ tons of dry powder retention agent
Paper, 0.6kg/ tons of paper of filter aid.
7. the production technology of paper and lower paper on a kind of protecting paper of gypsum board according to claim 4, it is characterised in that：Gypsum
In the chemicals that paper approach system is added on plate mask paper, 2kg/ tons of paper of wet strength agent；Paper approach system adds under protecting paper of gypsum board
In the chemicals entered, 4kg/ tons of paper of wet strength agent.
8. the production technology of paper and lower paper on a kind of protecting paper of gypsum board according to claim 4, it is characterised in that：Gypsum
On plate mask paper gauze portion use face, core, bottom three-layer network, surface layer be middle fiber vermicelli, core, bottom be long and short fiber in mass ratio
5:6 mixed slurries；Under protecting paper of gypsum board gauze portion use face, lining, core, bottom four-layer network, surface layer be Deinking Pulp vermicelli, lining, core,
Bottom is long and short fiber according to mass ratio 6:4 mixed slurries.
9. the production technology of paper and lower paper on a kind of protecting paper of gypsum board according to claim 4, it is characterised in that：Gypsum
Paper and lower paper table glue surface, bottom starch concentration are 6% on plate mask paper, and it is 20-30g/m to control into paper water imbibition surface layer2,
Hot water infiltration is paper bottom 30-50g/m on 3000-3600s, protecting paper of gypsum board2, paper bottom 30- under protecting paper of gypsum board
40g/m2。
10. the production technology of paper and lower paper on a kind of protecting paper of gypsum board according to claim 4, it is characterised in that：Stone
The papermaking workshop section of paper adds different dyes under cream plate mask paper.
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| CN108978327A (en) * | 2018-08-01 | 2018-12-11 | 联盛纸业（龙海）有限公司 | A kind of production method of wood chip defibrator process slurry substitution OCC slurry production corrugated paper |
| CN109024057A (en) * | 2018-08-03 | 2018-12-18 | 联盛纸业（龙海）有限公司 | A kind of production method of wood chip defibrator process slurry substitution OCC slurry production kraft paperboard |
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| CN111501391A (en) * | 2020-04-30 | 2020-08-07 | 山鹰国际控股股份公司 | Method for improving slurry quality |
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| CN110552236B (en) * | 2019-09-09 | 2021-09-24 | 杭州海鑫纸业有限公司 | Black paper and preparation process thereof |
| CN111501391A (en) * | 2020-04-30 | 2020-08-07 | 山鹰国际控股股份公司 | Method for improving slurry quality |
| CN113481750A (en) * | 2021-07-26 | 2021-10-08 | 东莞顺裕纸业有限公司 | Pulping process with good slag removal effect |
| CN113481750B (en) * | 2021-07-26 | 2023-03-14 | 东莞顺裕纸业有限公司 | Pulping process with good slag removal effect |
| CN117107554A (en) * | 2023-10-18 | 2023-11-24 | 山东博汇纸业股份有限公司 | Colored anti-counterfeiting gypsum plaster board protective paper and production method thereof |
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