CN109082945A - A kind of preparation process being coated with coated duplex board with grey back - Google Patents
A kind of preparation process being coated with coated duplex board with grey back Download PDFInfo
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- CN109082945A CN109082945A CN201810723149.0A CN201810723149A CN109082945A CN 109082945 A CN109082945 A CN 109082945A CN 201810723149 A CN201810723149 A CN 201810723149A CN 109082945 A CN109082945 A CN 109082945A
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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
- D21H27/10—Packing paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/30—Defibrating by other means
- D21B1/32—Defibrating by other means of waste paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/30—Defibrating by other means
- D21B1/34—Kneading or mixing; Pulpers
- D21B1/345—Pulpers
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/18—De-watering; Elimination of cooking or pulp-treating liquors from the pulp
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
- D21D5/02—Straining or screening the pulp
-
- 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
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/14—Secondary fibres
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
Abstract
A kind of preparation process being coated with coated duplex board with grey back carries out Classified optimization processing to different types of waste paper by five slurry lines (MOW, DIP, MWP, OCC, ONP), first by repulping of waste paper at paper pulp, paper pulp produces qualified slurry by processes such as sizing screening, purification, flotation, concentration, heat partitions, it is sent in the paper machine of more folded nets, compound, squeezing is formed by wet end, sizing, it is dry, coating, press polish, it the processes such as batches, produces qualified coated duplex board with grey back.The present invention is coated with the preparation process of coated duplex board with grey back by being recycled to waste paper, and the quality of generated coated duplex board with grey back is preferable, and enterprise's manufacturing cost is effectively reduced, and has saved resource, and reduces destruction of the waste paper to environment.
Description
Technical field
The present invention relates to a kind of paper technology more particularly to a kind of preparation processes for being coated with coated duplex board with grey back.
Background technique
Coating coated duplex board with grey back is a kind of package paper of middle-grade, is the important component of package paper.In recent years,
Energy conservation and environmental protection is that the direction of enterprise development and enterprise's long-term sustainable develop the problem of must paying attention to.In response to state
The call of family's energy-saving and emission-reduction, preserves the ecological environment, and realizes sustainable development.Old paper stock should be used as far as possible in the paper making process
As products material, entreprise cost not only can significantly reduce, and can reduce destruction of the waste paper to environment.However, in traditional handicraft
Carrying out the technique of papermaking with waste paper, there are still many defects, so as to cause using the matter of traditional handicraft coated duplex board with grey back produced
It measures unstable.
Summary of the invention
Based on this, it is necessary to aiming at the shortcomings in the prior art, a kind of preparation process for being coated with coated duplex board with grey back is provided, with
Solve the problems, such as that traditional waste paper prepares white board unstable quality.
The technical solution of the present invention is as follows:
A kind of preparation process being coated with coated duplex board with grey back, for waste paper to be prepared into coated duplex board with grey back, ash bottom blank
Paper includes the surface layer set gradually, lining, sandwich layer and bottom；The preparation process of the coating coated duplex board with grey back includes following step
It is rapid:
Step 1: prepared by slurry early period；Classified optimization processing is carried out to different types of waste paper using five slurry lines；This five
Kind slurry line is respectively MOW slurry line, DIP slurry line, ONP starches line, MWP starches line and OCC slurry line；
(1), the MWP slurry line includes the bale opener successively designed, pulper, high concentration desanding device, scalping system, fiber point
Grade sieve, short fine processing system, long fine processing system and MWP starch tower；Wherein to include that set gradually low is dense remove short fine processing system
Sand device, polydisc thickener and short fine transition stock tank, the long fine processing system include the heavy desander set gradually, fine screen choosing
System, lightweight desander, polydisc thickener and long fine transition stock tank；
The slurry preparation method of the MWP slurry line is as follows:
A, provide MWP starch line mixed waste paper, by MWP mixed waste paper successively through bale opener break up primary election, pulper size degradation at
Slurry, the slagging-off of highly concentrated slag removing system, scalping screening and fractionating screen sub-sieve go out staple fiber and long fibre；The staple fiber according to
It is secondary to be concentrated through low dense desander slagging-off, polydisc thickener, then it is stored into MWP slurry tower through transition stock tank；Long fibre successively passes through
After the slagging-off of heavy desander, fine-screening system fine screen, the slagging-off of lightweight desander and the concentration of polydisc thickener；It is stored using stock tank is crossed
Into MWP slurry tower；
(2), DIP slurry line include the bale opener successively designed, pulper, high concentration desanding device, scalping system, in dense remove
Sand device, fine-screening system, 1# flotation cell, low dense desander, lightweight desander, 1# polydisc thickener, heat dispersion machine, bleaching tower, 2#
Flotation cell, 2# polydisc thickener, transition stock tank and DIP starch tower；
The slurry preparation method of the DIP slurry line is as follows:
A, provide DIP starch line mixed waste paper, by DIP mixed waste paper successively through bale opener break up primary election, pulper size degradation at
Slurry, highly concentrated slagging-off, scalping screening, in the slagging-off of dense scummer, fine screen screening and 1# flotation cell flotation, the slurry after flotation send to
MWP line reuse；Good slurry after flotation is successively through the concentration of polydisc thickener, the concentration of screw extrusion to 20%-40%, heat dispersion machine
Heat partition, bleaching tower are bleached, the flotation of 2# flotation cell and 2# polydisc thickener are concentrated, after the slurry reducing bleach after concentration
DIP slurry tower is stored into through transition stock tank；
(3), the MOW slurry line includes the bale opener successively designed, pulper, high concentration desanding device, scalping system, unloads slurry
Tower, in dense screening system, 1# flotation cell, low dense desander, smart screening system, 1# polydisc thickener, 1# heat dispersion machine, centre
Pond, 2# flotation cell, 2# polydisc thickener, 2# heat dispersion machine, bleaching tower, 3# flotation cell, 3# polydisc thickener and MOW starch tower；
The slurry preparation method of the MOW slurry line is as follows:
A, it provides MOW and starches line mixed waste paper, the mixed waste paper of the MOW line successively breaks up primary election, pulper through bale opener
Size degradation is slurried, the slagging-off of highly concentrated slag removing system, scalping screening impurity, in dense sieve screening and 1# flotation cell flotation handle, after flotation
Slurry is sent to MWP and starches line reuse, and the good slurry after flotation is successively dense through low dense desander slagging-off, fine screen screening, 1# polydisc thickener
Contracting, screw extrusion to 20%-40% concentration and 1# heat dispersion machine carry out heat partition, and the slurry after dirt count enters centre
Pond；The good slurry in the part of intermediate pool, which is sent to DIP, starches tower；The good slurry of another part of intermediate pool is successively through the processing of 2# flotation cell, 2# polydisc
Thickener concentration, 2# heat partition carry out heat partition, the highly concentrated oxidation bleaching of bleaching tower, 3# flotation cell and the concentration of 3# polydisc thickener,
Reducing bleach is carried out to the slurry after concentration again, is then stored into MOW slurry tower；
(4), ONP slurry line include the bale opener successively designed, pulper, high concentration desanding device, scalping system, in dense sieve
Select system, flotation cell, low dense desander, fine-screening system, polydisc thickener, heat dispersion machine, transition stock tank and ONP slurry tower；
The slurry preparation method of the ONP slurry line is as follows:
A, ONP is provided and starches line mixed waste paper, ONP slurry line mixed waste paper successively tentatively selects reason, pulper size degradation through bale opener
Be slurried, the slagging-off of highly concentrated slag removing system, scalping screening impurity, in three sections after dense sieve screening into flotation cell, flotation treated slag
Slurry sends to MWP line reuse, and treated that good slurry is successively dense through three sections of low dense desanders slagging-off, three sections of fine screen screenings, polydiscs for flotation
After the concentration of contracting machine, the concentration of screw extrusion to 20%-40% and heat dispersion machine dirt count, ONP is stored into through transition stock tank
It starches in tower；
(5), the OCC slurry line includes the bale opener successively designed, pulper, high concentration desanding device, scalping system, fiber point
Grade sieve, short fine processing system, long fine processing system, OCC transition pond and OCC starch tower；The long fine processing system includes that heavy removes
Sand device, smart screening system, polydisc thickener and heat dispersion machine；Wherein short fine processing system includes heavy desander and lightweight desanding
Device, polydisc thickener and heat dispersion machine；
The slurry preparation method of the OCC slurry line is as follows:
A, provide OCC starch line mixed waste paper, OCC slurry line mixed waste paper successively through bale opener choosing reason, pulper size degradation be slurried,
Highly concentrated desanding system desanding, scalping screening and classification sieve select staple fiber and long fibre；The staple fiber is successively removed through heavy
Sand device and the slagging-off of lightweight desander, the concentration of lightweight desander, polydisc thickener, screw extrusion to 20%-30% concentration and heat
After dispersion machine dispersion, OCC slurry tower is stored into through OCC transition stock tank；The long fibre successively through it is low it is dense remove, heavy desander, essence
After screening fine screen, the concentration of polydisc thickener, screw extrusion to 20%-40% concentration and heat dispersion machine progress heat partition, through OCC mistake
It crosses stock tank and is stored into OCC slurry tower；
Step 2: later period slurry copy paper；Copy paper is carried out to each slurry prepared in step 1 using copy paper system；It is described to copy
Paper system includes surface layer approach system, lining approach system, bottom approach system and sandwich layer approach system；In the MOW slurry tower
Pulp flow to surface layer approach system in processing form the surface layer, DIP starches the pulp flow in tower to lining approach system
Interior to form the lining, processing forms the bottom in the pulp flow to bottom approach system in ONP slurry tower, MWP starch tower and
Processing forms the sandwich layer in pulp flow to sandwich layer approach system in part OCC slurry tower；Surface layer, lining, sandwich layer, bottom at
Cardboard is combined into after type again.
Further, MOW slurry line mixed waste paper includes American waste paper, Japanese waste paper and Chinese waste paper, American waste paper,
The ratio of Japanese waste paper and Chinese waste paper is (0%-20%): (0%-20%): (70%-90%).
Further, DIP slurry line mixed waste paper includes American waste paper, Japanese waste paper and Chinese waste paper, American waste paper,
The ratio of Japanese waste paper and Chinese waste paper is (0%-20%): (0%-20%): (70%-90%).
Further, ONP slurry line mixed waste paper includes American waste paper, Hong Kong waste paper and Chinese waste paper, American waste paper,
The ratio of Hong Kong waste paper and Chinese waste paper is (80%-100%): (0%-10%): (0%-10%).
Further, MWP slurry line mixed waste paper includes American waste paper, Hong Kong waste paper and Chinese waste paper, American waste paper,
The ratio of Hong Kong waste paper and Chinese waste paper is (0%-20%): (0%-20%): (70%-90%).
Further, OCC slurry line mixed waste paper includes American waste paper and Chinese waste paper, American waste paper and Chinese waste paper
Ratio be (20%-40%): (60%-80%).
Further, in step 2, the sandwich layer approach system includes sandwich layer head box and core net, and the core is set on the net
There is a folder net.
Further, in step 2, it is compound after cardboard need to successively through press dewatering, preceding drying and dehydrating, top sizing,
Drying and dehydrating, hard press polish, coating, hot-air seasoning, soft calendaring afterwards, coil into paper subsequently into reel machine.
Further, the cardboard after compound uses three press dewaterings, which is rill blind hole pressure respectively
It squeezes, shoe press and glazing press.
Further, floating through 1# flotation cell in the slurry preparation method that the DIP starches line, MOW slurry line and ONP slurry line
Slurry after choosing can be sent to MWP and starch line reuse.
In conclusion the preparation process of coating coated duplex board with grey back of the invention by five slurry lines (MOW, DIP, MWP,
OCC, ONP), Classified optimization processing is carried out to different types of waste paper, first by repulping of waste paper at paper pulp, paper pulp passes through classifying screen
The processes such as choosing, purification, flotation, concentration, heat partition produce qualified slurry, are sent in the paper machines of more folded nets, by wet end at
Type is compound, squeezes, and is glued, dry, coating, press polish, the processes such as batches, produces qualified coated duplex board with grey back.Present invention coating
For the preparation process of coated duplex board with grey back by being recycled to waste paper, the quality of generated coated duplex board with grey back is preferable, has
Effect reduces enterprise's manufacturing cost, has saved resource, and reduces destruction of the waste paper to environment.
Detailed description of the invention
Fig. 1 is a kind of process flow chart for being coated with coated duplex board with grey back of the present invention；
Fig. 2 is the blank preparation technics flow chart of the MWP slurry line in Fig. 1；
Fig. 3 is the blank preparation technics flow chart of the DIP slurry line in Fig. 1；
Fig. 4 is the blank preparation technics flow chart of the MOW slurry line in Fig. 1；
Fig. 5 is the blank preparation technics flow chart of the ONP slurry line in Fig. 1；
Fig. 6 is the blank preparation technics flow chart of the OCC slurry line in Fig. 1；
Fig. 7 is the copy paper process flow chart for each slurry that Fig. 2 is prepared into Fig. 6.
Specific embodiment
In order to which the objects, technical solutions and advantages of invention are more clearly understood, with reference to the accompanying drawings and embodiments, to hair
It is bright to be further elaborated.
As shown in Figures 1 to 7, the present invention provides a kind of preparation process for being coated with coated duplex board with grey back, is used for waste paper system
For at coated duplex board with grey back.The coated duplex board with grey back includes the surface layer set gradually, lining, sandwich layer and bottom.The grey bottom of the coating
The preparation process of white board includes the stock preparation stage of early period and the slurry copy paper stage in later period, and the slurry preparation uses five
Item slurry line handles different types of waste paper；This five kinds slurry lines are respectively MOW slurry line, DIP slurry line, ONP slurry line, MWP slurry
Line and OCC starch line；The slurry preparation method of each slurry line is specific as follows:
(1), the MWP slurry line includes the bale opener successively designed, pulper, two sections of high concentration desanding devices, two sections of scalping systems
It unites, unload slurry tower, fractionating screen, short fine processing system, long fine processing system and MWP slurry tower；Wherein short fine processing system packet
Include the low dense desander of three sections set gradually, polydisc thickener and short fine transition stock tank, the long fine processing system includes successively
Four sections of heavy desanders, three sections of smart screening systems, two sections of lightweight desanders, polydisc thickener and the long fine transition stock tank being arranged；
The slurry preparation method of the MWP slurry line is as follows:
A, MWP is provided and starches line mixed waste paper, the MWP slurry line mixed waste paper includes American waste paper, Hong Kong waste paper and China
Waste paper, the ratio of American waste paper, Hong Kong waste paper and Chinese waste paper are (0%-20%): (0%-20%): (70%-90%).It is excellent
Selection of land, the ratio of American waste paper, Hong Kong waste paper and Chinese waste paper are 10%:10%:80%.
The mixed waste paper of MWP line tentatively selects reason by bale opener, is sent to rotary drum pulping machine size degradation into paper through chain scraper conveyor
Slurry, while rubbish is separated and sends to wash water line classification processing through belt feeder；Good slurry enters by two sections of highly concentrated slag removing systems to be unloaded
Then slurry tower filters out slurry and impurity containing heavy seeds by two sections of scalpings, slurry enters flotation smoothing machine, header box
After impurity separator processing, impurity is pulled away between being discharged to slurry with vehicle, and the slurry after slurry is discharged enters fractionating screen；Through fibre
The addition in pulp of dimension classifying screen goes out staple fiber and long fibre；
B, the staple fiber removes the gred through three sections of desanders, and it is dense that the good slurry through too short fine three sections of desanders enters polydisc thickener
Contracting, the slurry after concentration are sent to short fine transition stock tank, are stored into MWP slurry tower, most kowtow after-bay through sandwich layer afterwards and go paper machine papermaking；
C, the long fibre removes the gred through four sections of heavy desanders, enters three sections of fine screen choosings through the too long fine good slurry of four sections of desanders
System carries out fine screen choosing, and the good slurry by three sections of fine screens screening enters two sections of lightweight desander slagging-off, by two sections of lightweight desanding
The good slurry of device enters the concentration of polydisc thickener, and the slurry after concentration is sent to long fine transition stock tank, is stored into MWP slurry tower, most passes through afterwards
Sandwich layer kowtows after-bay and goes paper machine papermaking.
(2), the DIP slurry line includes the bale opener successively designed, pulper, high concentration desanding device, two sections of scalping systems, two
Duan Zhongnong desander, two sections of fine-screening systems, 1# flotation cell, three sections of low dense desanders, three sections of lightweight desanders, the concentration of 1# polydisc
Machine, heat dispersion machine, bleaching tower, 2# flotation cell, 2# polydisc thickener, transition stock tank and DIP starch tower；
The slurry preparation method of the DIP slurry line is as follows:
A, DIP is provided and starches line mixed waste paper, the DIP slurry line mixed waste paper includes American waste paper, Japanese waste paper and China
Waste paper, the ratio of American waste paper, Japanese waste paper and Chinese waste paper are (0%-20%): (0%-20%): (70%-90%)；It is excellent
Selection of land, the ratio of American waste paper, Japanese waste paper and Chinese waste paper are 10%:10%:80%.
The mixed waste paper of DIP slurry line tentatively selects reason by bale opener, through chain scraper conveyor be sent to rotary drum pulping machine size degradation at
Paper pulp, while rubbish is separated and sends to wash water line classification processing through belt feeder；Good slurry removes the gred by highly concentrated slag removing system, then
Impurity is screened by two sections of scalpings, impurity sends to wash water line classification processing through belt feeder, and the good slurry after screening enters dense in two sections
Scummer slagging-off, then by two sections of fine screen screenings, the good slurry screened through two sections of fine screens enters 1# flotation cell, and treated for flotation
Slurry sends to MWP line reuse, and treated that good slurry sends to three sections of low dense desanders removes weight slag for flotation, then through three sections of lightweight desanders
Except light slag, purified good slurry is sent into the concentration of 1# polydisc thickener, and the concentration then through screw extrusion to 30%, helical feed arrives
Heat dispersion machine carries out heat partition with the sticky matter in dispersed paste, and the slurry after dirt count enters bleaching tower, to slurry
Material carries out highly concentrated oxidation bleaching, and the slurry after oxidation bleaching enters 2# flotation cell, and through flotation, treated that good slurry enters 2# is more
The concentration of disk thickener carries out reducing bleach to the slurry after concentration, and through reducing bleach, treated that slurry enters transition stock tank, storage
It is stored to DIP slurry tower, most after-bay is kowtowed through lining afterwards and goes paper machine papermaking.
(3), the MOW slurry line includes the bale opener successively designed, pulper, high concentration desanding device, two sections of scalping systems, unloads
Slurry tower, dense screening system in three sections, 1# flotation cell, four sections of low dense desanders, two sections of smart screening systems, 1# polydisc thickener,
1# heat dispersion machine, intermediate pool, 2# flotation cell, 2# polydisc thickener, 2# heat dispersion machine, bleaching tower, 3# flotation cell, the concentration of 3# polydisc
Machine and MOW starch tower.
The slurry preparation method of the MOW slurry line is as follows:
A, MOW is provided and starches line mixed waste paper, the MOW slurry line mixed waste paper includes American waste paper, Japanese waste paper and China
Waste paper, the ratio of American waste paper, Japanese waste paper and Chinese waste paper are (0%-20%): (0%-20%): (70%-90%)；It is excellent
Selection of land, the ratio of American waste paper, Japanese waste paper and Chinese waste paper are 10%:10%:80%.
The mixed waste paper of MOW slurry line tentatively selects reason by bale opener, through chain scraper conveyor be sent to rotary drum pulping machine size degradation at
Paper pulp, while rubbish is separated and sends to wash water line classification processing through belt feeder；Good slurry removes the gred by highly concentrated slag removing system, then
Impurity is filtered out by two sections of scalpings, impurity sends to wash water line classification processing through belt feeder, and the slurry after impurity is discharged, which enters, to be unloaded
Then slurry tower is screened by sieve dense in three sections, the good slurry through screening enters 1# flotation cell, and treated that slurry is sent to for flotation
MWP line reuse, treated that good slurry sends to four sections of low dense desanders slagging-off for flotation, then by two sections of fine screens screenings, through two sections
The good slurry of fine screen screening enters the concentration of fine screen polydisc thickener；Then the concentration through screw extrusion to 30%, helical feed to heat
Dispersion machine carries out heat partition with the sticky matter in dispersed paste, and the slurry after 1# dirt count enters intermediate pool；
B, the good slurry of the intermediate pool, a part of good slurry send to DIP slurry tower, most kowtow after-bay through lining afterwards and go paper machine papermaking
(comparison DIP line, saved cost)；
C, the good slurry of the intermediate pool, the good slurry of another part send to the processing of 2# flotation cell, flotation treated good slurry entrance
The concentration of 2# polydisc thickener, the slurry after concentration are sent to sticky matter of the 2# heat partition again in dispersed paste, at 2# heat partition
Slurry after reason enters bleaching tower, carries out highly concentrated oxidation bleaching to slurry, and the slurry after oxidation bleaching enters 3# flotation cell, passes through
Flotation treated it is good slurry enter 3# polydisc thickener be concentrated, to after concentration slurry carry out reducing bleach, at reducing bleach
Slurry after reason is stored into MOW slurry tower, most kowtows after-bay through surface layer afterwards and goes paper machine papermaking.
(4), the ONP slurry line includes the bale opener successively designed, pulper, high concentration desanding device, two sections of scalping systems, three
Duan Zhongnong screening system, flotation cell, three sections of low dense desanders, three sections of fine-screening systems, polydisc thickener, heat dispersion machine, transition slurry
Pond and ONP starch tower；
The slurry preparation method of the ONP slurry line is as follows:
A, ONP is provided and starches line mixing waste, the ONP slurry line mixed waste paper includes American waste paper, Hong Kong waste paper and China
Waste paper, the ratio of American waste paper, Hong Kong waste paper and Chinese waste paper are (80%-100%): (0%-10%): (0%-10%).It is excellent
Selection of land, American waste paper, Hong Kong waste paper and Chinese waste paper 90%:5%:5%.
The mixed waste paper of ONP line tentatively selects reason by bale opener, is sent to rotary drum pulping machine size degradation into paper through chain scraper conveyor
Slurry, while rubbish is separated and sends to wash water line classification processing through belt feeder；Good slurry removes the gred by highly concentrated slag removing system, then passes through
Two sections of scalping screening impurity are crossed, impurity sends to wash water line classification processing through belt feeder, and the good slurry after screening enters dense sieve in three sections
Screening, the good slurry of dense sieve screening enters flotation cell in, and treated that slurry sends to MWP line reuse for flotation, and treated for flotation
Good slurry sends to three sections of low dense desander slagging-off, and then by three sections of fine screen screenings, the good slurry after being screened and purified is sent into polydisc concentration
Machine concentration, the concentration then through screw extrusion to 30%, helical feed to heat dispersion machine carry out heat partition in dispersed paste
Sticky matter, treated, and slurry enters transition stock tank, is stored into ONP slurry tower, most kowtows after-bay through bottom afterwards and go paper machine papermaking.
(5), the OCC slurry line includes the bale opener successively designed, pulper, high concentration desanding device, two sections of scalping systems, unloads
Slurry tower, in dense desander, fractionating screen, short fine processing system, long fine processing system, OCC transition pond and OCC starch tower；Institute
Stating long fine processing system includes four sections of heavy desanders, three sections of smart screening systems, polydisc thickener and heat dispersion machine；Wherein short fibre
Processing system includes two sections of low dense desanders and two sections of lightweight desanders, polydisc thickener and heat dispersion machine.
The slurry preparation method of the OCC slurry line is as follows:
A, OCC is provided and starches line mixed waste paper, the OCC slurry line mixed waste paper includes American waste paper and Chinese waste paper, the U.S.
The ratio of waste paper and Chinese waste paper is (20%-40%): (60%-80%).Preferably, the ratio of American waste paper and Chinese waste paper
For 30%:70%.
OCC slurry line mixed waste paper tentatively selects reason by bale opener, is sent to pulper size degradation at paper pulp, together through chain scraper conveyor
When by twisted rope pull out rubbish, and with vehicle pull away the rubbish and containing the slurry of heavy seeds；Good slurry passes through two sections of highly concentrated desanding
System, which enters, unloads slurry tower, then filters out slurry and impurity containing heavy seeds by two sections of scalpings, it is clear that slurry enters flotation
After slag machine, header box and impurity separator processing, impurity is pulled away between being discharged to slurry with vehicle, dense in the slurry warp after slurry is discharged to remove
Enter scalping after sand device desanding processing to sieve；The addition in pulp sieved through scalping goes out staple fiber and long fibre；
B, the staple fiber is removed after four sections of heavy desanders and two sections of lightweight desander slagging-off through too short fine two sections of lightweights
The good slurry of sand device enter polydisc thickener concentration, the concentration then through screw extrusion to 30%, helical feed to heat dispersion machine into
Row heat partition through OCC transition stock tank, is stored into OCC slurry with sicker, ink, resin, the sticky matters such as cured in dispersed paste
Tower most kowtows after-bay through sandwich layer afterwards and paper machine is gone to carry out papermaking；
C, the long fibre enters three sections of essences by the good slurry of four sections of heavy desanders after four sections of low dense desander slagging-off
Screening system carries out fine screen choosing, and sludge arranges trench, enters the concentration of polydisc thickener by the good slurry that three sections of fine screens are screened, then passes through
Screw extrusion is to 30% concentration, and helical feed is to heat dispersion machine progress heat partition with the sicker in dispersed paste, ink, tree
The sticky matters such as rouge, cured through OCC transition stock tank, are stored into OCC slurry tower, most kowtow after-bay through sandwich layer afterwards and paper machine is gone to carry out papermaking.
The accepted stock that will be prepared in slurry preparation procedure early period is sent to the interior carry out copy paper of paper locomotive；Between the paper locomotive
Equipped with a copy paper system, the copy paper system surface layer approach system, lining approach system, bottom approach system and sandwich layer streaming system
System.
A, the slurry that MOW is starched in tower enters paper machine side layer approach system, and the surface layer approach system includes surface layer head box
And veil, MOW slurry are ejected into veil molding through surface layer head box.The lining approach system include lining head box and lining net,
MOW starches line primary Ioops slurry and DIP slurry enters paper machine lining approach system, is ejected into lining net forming through lining head box.The core
Layer approach system includes sandwich layer head box, core net and a small folder net, and the sandwich layer head box uses dilution water head box, MWP slurry
Enter paper machine core layer approach system with OCC slurry, is ejected into core net forming through sandwich layer head box, the one small folder that sandwich layer is equipped with, which is netted, to be promoted
It is formed into de-watering of slurries.The bottom approach system includes bottom head box and spacer screen, and ONP slurry enters paper machine bottom streaming system
System is ejected into spacer screen molding through bottom head box；Paper is combined into wet end after four layers of surface layer, lining, sandwich layer, bottom slurry molding
Plate.
B, the cardboard after wet end is compound is dehydrated by three squeezings (rill blind drilled press, shoe press, glazing press), after
Drying section drying and dehydrating before being sent into, preceding dry cardboard is sent into film transfer sizing applicator and carries out top sizing out, and drying section is dry after
Dry dehydration, the cardboard of drying section enters hard calender and improves surface property out, subsequently into coating station (it is pre-, in, face applies
Cloth, back apply sizing), good printing quality is obtained by scraper coating machine, the cardboard of coating section hot-air seasoning enters soft out
Calender improves surface property, coils into paper subsequently into reel machine.
In conclusion the preparation process of coating coated duplex board with grey back of the invention by five slurry lines (MOW, DIP, MWP,
OCC, ONP), Classified optimization processing is carried out to different types of waste paper, first by repulping of waste paper at paper pulp, paper pulp passes through classifying screen
The processes such as choosing, purification, flotation, concentration, heat partition produce qualified slurry, are sent in the paper machines of more folded nets, by wet end at
Type is compound, squeezes, and is glued, dry, coating, press polish, the processes such as batches, produces qualified coated duplex board with grey back.Present invention coating
For the preparation process of coated duplex board with grey back by being recycled to waste paper, the quality of generated coated duplex board with grey back is preferable, has
Effect reduces enterprise's manufacturing cost, has saved resource, and reduces destruction of the waste paper to environment.
A kind of embodiment invented above described embodiment only expresses, the description thereof is more specific and detailed, but not
It can therefore be construed as limiting the scope of the patent.It should be pointed out that for those of ordinary skill in the art,
Under the premise of not departing from inventive concept, various modifications and improvements can be made, these belong to the protection scope of invention.Cause
This, the scope of protection shall be subject to the appended claims for patent of invention.
Claims (10)
1. a kind of preparation process for being coated with coated duplex board with grey back, for waste paper to be prepared into coated duplex board with grey back, the coated duplex board with grey back
Including surface layer, lining, sandwich layer and the bottom set gradually；It is characterized by: the preparation process packet of the coating coated duplex board with grey back
Include following steps:
Step 1: prepared by slurry early period；Classified optimization processing is carried out to different types of waste paper using five slurry lines；This five kinds slurries
Line is respectively MOW slurry line, DIP slurry line, ONP slurry line, MWP slurry line and OCC slurry line；
(1), the MWP slurry line includes the bale opener successively designed, pulper, high concentration desanding device, scalping system, fiber classification
Sieve, short fine processing system, long fine processing system and MWP starch tower；Wherein short fine processing system includes the low dense desanding set gradually
Device, polydisc thickener and short fine transition stock tank, the long fine processing system include the heavy desander set gradually, fine screen choosing system
System, lightweight desander, polydisc thickener and long fine transition stock tank；
The slurry preparation method of the MWP slurry line is as follows:
A, it provides MWP and starches line mixed waste paper, MWP mixed waste paper is successively broken up into primary election through bale opener, pulper size degradation is slurried, high
Dense slag removing system slagging-off, scalping screening and fractionating screen sub-sieve go out staple fiber and long fibre；The staple fiber is successively through low
Then dense desander slagging-off, the concentration of polydisc thickener are stored into MWP slurry tower through transition stock tank；Long fibre is successively removed through heavy
After the slagging-off of sand device, fine-screening system fine screen, the slagging-off of lightweight desander and the concentration of polydisc thickener；MWP is stored into using stock tank is crossed
It starches in tower；
(2), DIP slurry line include the bale opener successively designed, pulper, high concentration desanding device, scalping system, in dense desanding
Device, fine-screening system, 1# flotation cell, low dense desander, lightweight desander, 1# polydisc thickener, heat dispersion machine, bleaching tower, 2# are floating
Select slot, 2# polydisc thickener, transition stock tank and DIP slurry tower；
The slurry preparation method of the DIP slurry line is as follows:
A, it provides DIP and starches line mixed waste paper, DIP mixed waste paper is successively broken up into primary election through bale opener, pulper size degradation is slurried, high
Dense slagging-off, scalping screening, in the slagging-off of dense scummer, fine screen screening and 1# flotation cell flotation；Good slurry after flotation is successively through polydisc
Thickener concentration, the concentration of screw extrusion to 20%-40%, heat dispersion machine heat partition, bleaching tower are bleached, 2# flotation cell is floating
Choosing and the concentration of 2# polydisc thickener will be stored into DIP slurry tower through transition stock tank after the slurry reducing bleach after concentration；
(3), MOW slurry line include the bale opener successively designed, pulper, high concentration desanding device, scalping system, unload slurry tower,
In dense screening system, 1# flotation cell, low dense desander, smart screening system, 1# polydisc thickener, 1# heat dispersion machine, intermediate pool, 2#
Flotation cell, 2# polydisc thickener, 2# heat dispersion machine, bleaching tower, 3# flotation cell, 3# polydisc thickener and MOW starch tower；
The slurry preparation method of the MOW slurry line is as follows:
A, it provides MOW and starches line mixed waste paper, the mixed waste paper of the MOW line successively breaks up primary election, pulper size degradation through bale opener
Be slurried, the slagging-off of highly concentrated slag removing system, scalping screening impurity, in the screening of dense sieve and 1# flotation cell flotation handle, the good slurry after flotation
Successively through low dense desander slagging-off, fine screen screening, the concentration of 1# polydisc thickener, screw extrusion to 20%-40% concentration and 1# heat
Dispersion machine carries out heat partition, and the slurry after dirt count enters intermediate pool；The good slurry in the part of intermediate pool, which is sent to DIP, starches tower；In
Between pond another part it is good slurry successively through 2# flotation cell handle, 2# polydisc thickener concentration, 2# heat partition carry out heat partition, bleaching
The dense oxidation bleaching of tower height, 3# flotation cell and the concentration of 3# polydisc thickener, then reducing bleach is carried out to the slurry after concentration, then store up
It is stored to MOW slurry tower；
(4), ONP slurry line include the bale opener successively designed, pulper, high concentration desanding device, scalping system, in dense screening be
System, flotation cell, low dense desander, fine-screening system, polydisc thickener, heat dispersion machine, transition stock tank and ONP starch tower；
The slurry preparation method of the ONP slurry line is as follows:
A, provide ONP starch line mixed waste paper, ONP slurry line mixed waste paper successively tentatively select reason, pulper size degradation to be slurried through bale opener,
The slagging-off of highly concentrated slag removing system, scalping screening impurity enter flotation cell in three sections after dense sieve screening, treated good starches successively for flotation
Through three sections of low dense desander slagging-off, three sections of fine screen screenings, polydisc thickener concentration, screw extrusion to 20%-40% concentration and
After heat dispersion machine dirt count, it is stored into ONP slurry tower through transition stock tank；
(5), OCC slurry line include the bale opener successively designed, pulper, high concentration desanding device, scalping system, in dense desanding
Device, fractionating screen, short fine processing system, long fine processing system, OCC transition pond and OCC starch tower；The long fine processing system packet
Include heavy desander, smart screening system, polydisc thickener and heat dispersion machine；Wherein short fine processing system include low dense desander and
Lightweight desander, polydisc thickener and heat dispersion machine；
The slurry preparation method of the OCC slurry line is as follows:
A, OCC is provided and starches line mixed waste paper, OCC slurry line mixed waste paper is successively slurried through bale opener choosing reason, pulper size degradation, is highly concentrated
Desanding system desanding, scalping screening, in dense desander and classification sieve select staple fiber and long fibre；The staple fiber successively passes through
Low dense desander and the slagging-off of lightweight desander, the concentration of lightweight desander, polydisc thickener, screw extrusion to the dense of 20%-30%
After degree and heat dispersion machine dispersion, OCC slurry tower is stored into through OCC transition stock tank；The long fibre successively through it is low it is dense remove, heavy desanding
After device, fine screen select fine screen, the concentration of polydisc thickener, screw extrusion to 20%-40% concentration and heat dispersion machine to carry out heat partition, warp
OCC transition stock tank is stored into OCC slurry tower；
Step 2: later period slurry copy paper；Copy paper is carried out to each slurry prepared in step 1 using copy paper system；The copy paper system
System includes surface layer approach system, lining approach system, bottom approach system and sandwich layer approach system；Slurry in the MOW slurry tower
Stream is sent to processing in surface layer approach system and forms the surface layer, and DIP starches shape in the pulp flow to lining approach system in tower
At the lining, processing forms the bottom in the pulp flow to bottom approach system in ONP slurry tower, and MWP starches tower and OCC slurry
Processing forms the sandwich layer in pulp flow to sandwich layer approach system in tower；It is multiple again after surface layer, lining, sandwich layer, bottom molding
Combination board.
2. a kind of preparation process for being coated with coated duplex board with grey back as described in claim 1, it is characterised in that: the MOW slurry line is mixed
Closing waste paper includes American waste paper, Japanese waste paper and Chinese waste paper, and the ratio of American waste paper, Japanese waste paper and Chinese waste paper is
(0%-20%): (0%-20%): (70%-90%).
3. a kind of preparation process for being coated with coated duplex board with grey back as described in claim 1, it is characterised in that: the DIP slurry line is mixed
Closing waste paper includes American waste paper, Japanese waste paper and Chinese waste paper, and the ratio of American waste paper, Japanese waste paper and Chinese waste paper is
(0%-20%): (0%-20%): (70%-90%).
4. a kind of preparation process for being coated with coated duplex board with grey back as described in claim 1, it is characterised in that: the ONP slurry line is mixed
Closing waste paper includes American waste paper, Hong Kong waste paper and Chinese waste paper, and the ratio of American waste paper, Hong Kong waste paper and Chinese waste paper is
(80%-100%): (0%-10%): (0%-10%).
5. a kind of preparation process for being coated with coated duplex board with grey back as described in claim 1, it is characterised in that: the MWP slurry line is mixed
Closing waste paper includes American waste paper, Hong Kong waste paper and Chinese waste paper, and the ratio of American waste paper, Hong Kong waste paper and Chinese waste paper is
(0%-20%): (0%-20%): (70%-90%).
6. a kind of preparation process for being coated with coated duplex board with grey back as described in claim 1, it is characterised in that: the OCC slurry line is mixed
Closing waste paper includes American waste paper and Chinese waste paper, and the ratio of American waste paper and China's waste paper is (20%-40%): (60%-
80%).
7. a kind of preparation process for being coated with coated duplex board with grey back as described in claim 1, it is characterised in that: in step 2, institute
Stating sandwich layer approach system includes sandwich layer head box and core net, and the core is equipped with a folder net on the net.
8. a kind of preparation process for being coated with coated duplex board with grey back as described in claim 1, it is characterised in that: multiple in step 2
Cardboard after conjunction need to successively through press dewatering, preceding drying and dehydrating, top sizing, after drying and dehydrating, hard press polish, coating, hot wind dry
Dry, soft calendaring, coils into paper subsequently into reel machine.
9. a kind of preparation process for being coated with coated duplex board with grey back as described in claim 1, it is characterised in that: the cardboard after compound is adopted
With three press dewaterings, which is rill blind drilled press, shoe press and glazing press respectively.
10. a kind of preparation process for being coated with kraft paperboard as described in claim 1, it is characterised in that: starched in the DIP
In the slurry preparation method of line, MOW slurry line and ONP slurry line, the slurry after 1# flotation cell flotation can be sent to MWP slurry line and return
With.
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| CN110205855A (en) * | 2019-04-19 | 2019-09-06 | 东莞建晖纸业有限公司 | A kind of coating coated duplex board with grey back center stock preparation process |
| CN110219200A (en) * | 2019-04-19 | 2019-09-10 | 东莞建晖纸业有限公司 | Novel coating coated duplex board with grey back center stock preparation process |
| 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 |
| 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 |
| CN112726268A (en) * | 2020-12-23 | 2021-04-30 | 玖龙纸业（太仓）有限公司 | Pulping process of coated grey-bottom white board |
| CN113249998A (en) * | 2021-06-04 | 2021-08-13 | 安德里茨（中国）有限公司 | Waste paper pulping system |
| CN115948934A (en) * | 2022-12-12 | 2023-04-11 | 玖龙纸业(天津)有限公司 | Papermaking process flow for recycling waste paper |
| CN115976874A (en) * | 2022-11-30 | 2023-04-18 | 东莞建晖纸业有限公司 | Method for on-line mutual production conversion of four-layer grey-base-coated white board and five-layer grey-base-coated white board |
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| CN115976874A (en) * | 2022-11-30 | 2023-04-18 | 东莞建晖纸业有限公司 | Method for on-line mutual production conversion of four-layer grey-base-coated white board and five-layer grey-base-coated white board |
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| CN115948934A (en) * | 2022-12-12 | 2023-04-11 | 玖龙纸业(天津)有限公司 | Papermaking process flow for recycling waste paper |
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