CN106676923B - The method that a kind of biochemical process TCF bleached kraft pulps of Fast growth poplar prepare paper base material - Google Patents
The method that a kind of biochemical process TCF bleached kraft pulps of Fast growth poplar prepare paper base material Download PDFInfo
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- CN106676923B CN106676923B CN201611260671.7A CN201611260671A CN106676923B CN 106676923 B CN106676923 B CN 106676923B CN 201611260671 A CN201611260671 A CN 201611260671A CN 106676923 B CN106676923 B CN 106676923B
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/02—Chemical or chemomechanical or chemothermomechanical pulp
- D21H11/04—Kraft or sulfate pulp
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- 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
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
- D21C5/005—Treatment of cellulose-containing material with microorganisms or enzymes
-
- 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
- D21C9/10—Bleaching ; Apparatus therefor
-
- 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
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/16—Bleaching ; Apparatus therefor with per compounds
- D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
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- General Chemical & Material Sciences (AREA)
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Abstract
The invention discloses the method that a kind of biochemical process TCF bleached kraft pulps of Fast growth poplar prepare paper base material, comprise the following steps：The biochemical process TCF bleached kraft pulps of Fast growth poplar are subjected to gradient mashing respectively, the beating degree of the first paper pulp is 15 25 ° of SR, and the beating degree of second of paper pulp is 30 55 ° of SR, and the beating degree of the third paper pulp is 65 75 ° of SR；Then by the paper pulp of prepare three kinds of gradients according to mass ratio 5 ~ 15：60~80：10 ~ 20 carry out preparing paper base material after being well mixed.In paper-making process, the present invention solves the deficiency of single mashing technology in the prior art, avoids the use of additional additive using gradient mashing technology and from two key technologies of adding technique.
Description
Technical field
The invention belongs to pulp technology for making paper, and in particular to a kind of biochemical process TCF bleached kraft pulps of Fast growth poplar
The method for preparing paper base material.
Background technology
Since 2012, the total output of China's paper and cardboard has exceeded a quarter of global yield, is sure to occupy the first in the world.
With the fast development of China's paper industry, timber biological matter has turned into the main raw material(s) of China's pulp and paper industry, accounts for
The 60% of raw material of papermaking fiber.With the continuous improvement of pulp and paper industry production technology level, leaf wood is in pulping and paper-making
Shared proportion continues to increase.Currently, the extensive Fast growth poplar woods of northern China has provided scale, is the hair of pulp and paper industry
Good raw material has been laid in exhibition., will using the component isolation technics of wood fibre paper making raw material with the development of society and science and technology
Its separation prepare chemical pulp except use it for preparing traditional paper and cardboard while, redevelopment series prepare paper base material
The new technology of material, traditional paper industry is widened to new material industry, widened newly for the transition and upgrade of traditional paper industry
Thinking and approach.
The process of papermaking is broadly divided into two basic processes of slurrying and papermaking.Now in production generally by single starting pulps
Or mixed material paper pulp is various after simple mashing, then toward the filler of addition improvement paper performance, sizing material, sizing agent etc. in paper pulp
Auxiliary material, then carry out copying the type of being made or compressing.Wherein, papermaking filler refers to that some added in paper pulp are substantially insoluble in
The solia particle of water, the purpose of addition be improve paper opacity, brightness, smoothness, flexibility, uniformity and size it is steady
It is qualitative.The feel of paper can also be lifted, reduces paper hygroscopicity, reduces fiber consumption.The paper pulp of addition filler, which can reduce, to be made
Paper cost, improve the partial properties of paper.But filler can decline the degree of sizing of paper and intensity.In addition, addition filler
The easy dry linting of paper, hair loss, while the use of a large amount of chemical addition agents, may be such that Some paper sheets not environmentally, also drop in itself
The degradation property of low paper, certain harm is caused to environment.
The biochemical process TCF bleached kraft pulps on Fast growth poplar use the paper that conventional paper-making technique is prepared at present
Sill exist into every physical index after paper it is relatively low, especially on fine tissue is prepared, part physical refers to
Mark relatively low situation.
The content of the invention
For problems of the prior art, the present invention is using gradient mashing technology and from two crucial skills of adding technique
Art, using the type of being made is copied and compressing two methods prepare advanced paper base material, obtain the paper base material of series high strength
New preparation technology.
The technical solution adopted by the present invention is as follows：
The biochemical process TCF bleached kraft pulps that first purpose of the present invention is to provide a kind of Fast growth poplar prepare paper substrate
The method of material, comprises the following steps：
The biochemical process TCF bleached kraft pulps of Fast growth poplar are subjected to gradient mashing, the mashing of the first paper pulp respectively
Spend for 15~25 ° of SR, the beating degree of second of paper pulp is 30~55 ° of SR, and the beating degree of the third paper pulp is 65~75 ° of SR；
Then by the paper pulp of prepare three kinds of gradients according to mass ratio 10~20：60~80：10~20 is well mixed
After prepare paper base material.
Because energy consumption needed for different beating degrees is different, the present invention can mix in proportion according to the characteristic of required paper base material
Paper base material is prepared after closing uniformly, can play while ensureing to reach required paper base material performance, make energy resource consumption minimum.
Preferably, the beating degree of the first paper pulp is 20~25 ° of SR, and the beating degree of second of paper pulp is 30~50 °
SR, the beating degree of the third paper pulp is 65~70 ° of SR.
Preferably, according to the specific paper pulp raw material of the present invention, for cause the physical property of paper base material that is prepared compared with
Good, the mass ratio of the first paper pulp, second of paper pulp and the third paper pulp is 15~20：65~75：10~15.
Most preferably, the mass ratio of the first paper pulp, second of paper pulp and the third paper pulp is 20：70：10.
Preferably, the preparation method referenced patents of the biochemical process TCF bleached kraft pulps of the Fast growth poplar
Preparation method in 201310303232.X.
The preparation method of the biochemical process TCF bleached kraft pulps of Fast growth poplar, comprises the following steps：
(1) boiling：Fast growth poplar wood chip is taken, is put into boiling in digester, obtains magma, is then washed, screened, obtain paper
Slurry；
(2) xylanase pretr eatment；
(3) TCF is bleached：Bleached to above-mentioned by the paper pulp of ferment treatment, bleaching process OP- Q-P, O1-O2P-Q-P
Or O1P-O2POne of three kinds of-Q-P drift sequences, it is the step of bleaching process：First, to carrying out deoxidation lignin by the paper pulp of ferment treatment
Or strengthen deoxidation lignin；After oxygen delignification terminates, paper pulp is washed, then carries out Q section chelation treatments；Q section chelation treatments
After end, paper pulp is washed, then carries out P sections H2O2Bleaching, complete, obtain the biochemical process TCF bleaching sulphur of Fast growth poplar
Hydrochlorate is starched.
Further, the concrete mode of the boiling is：Take 15~25mm of length, 10~20mm of width, 3~5mm of thickness
Fast growth poplar wood chip, after natural air drying, boiling is carried out in 15L electric heating rotating autoclaves, Fast growth poplar sulfate magma is made,
The condition of boiling is：Alkali charge 20% is (to over dry raw material, Na2O is counted), sulphidity 24%, liquor ratio 1:4, boiling maximum temperature 165
DEG C, small deflation 15min, heating-up time 120min, soaking time 90min are carried out at 105 DEG C；Carried out after boiling fully washing,
Screening, obtains paper pulp, the Kappa number of paper pulp is 16~21.
Further, the concrete mode of the xylanase pretr eatment is：It is 10% to adjust pulp density, then poly- with wood
Carbohydrase X1、X2Or X3Handled, in processing procedure, at interval of 10~15min rubbings once, to ensure the equal of enzyme and paper pulp
Even mixing；Taken out after processing, be put into 10min in boiling water bath, zytase is inactivated terminating reaction, after cleaning paper pulp with running water
Into next step bleaching process.
Further, the zytase X1(trade name Novi letter zytase is provided by Novozymes Company
PulpzymeHC, article number CKN00117 and CDN00429), liquid, cellulose-less enzyme activity；Zytase X2、X3It is green by Shenzhen
Micro- health biology Co., Ltd provides (trade name zytase, article number LV-1 and LV-2), is white powdery solids,
Without cellulase activity.
Preferably, after obtaining well mixed paper pulp, using copying the type of being made or compressing prepare paper base material.Copy and be made
Type and it is compressing be conventional technique in pulp technology for making paper.
Second object of the present invention is to provide a kind of paper base material being prepared using the above method.The paper base material
Can be environmental protection package paper, paper for daily use, white card body paper etc..
Wherein, the paper for daily use is high-grade toilet paper, napkin paper and tissue.
Preferably, it is more suitable for preparing paper for daily use-toilet paper using the method for the present invention, including roll toilet paper and takes out
Modus ponens toilet paper, using the paper for daily use that is prepared of method of the present invention, pliability is preferable, absorption of water is high, tensile strength compared with
Height, effect protrude notable.
Third object of the present invention is to provide a kind of application of gradient mixed pulp in toilet paper is prepared, the gradient
The preparation method of mixed pulp is as follows：The biochemical process TCF bleached kraft pulps of Fast growth poplar are subjected to gradient mashing respectively, the
A kind of beating degree of paper pulp is 15~25 ° of SR, and the beating degree of second of paper pulp is 30~55 ° of SR, the beating degree of the third paper pulp
For 65~75 ° of SR；Then by the paper pulp of prepare three kinds of gradients according to mass ratio 10~20：60~80：10~20 are carried out
Gradient mixed pulp is obtained after well mixed.
For the yield and quality of raising toilet paper by a relatively large margin, produce in the prior art more or less during toilet paper
Some additives, such as drying strengthening agent are all with the addition of, saves fibrous raw material, increases toilet paper intensity；Dry strength aid, also it is fiber
Adhesive, being primarily due to it has certain molecular weight and active group, and cellulosic hydroxy can be made to combine so as to improve intensity；Deng
Deng.
For the biochemical process TCF bleached kraft pulps of Fast growth poplar, it is beaten using the gradient of the present invention and adds skill certainly
Art, the shortcomings that can avoiding preparing toilet paper in the prior art.This is due to the biochemical process TCF drifts of the Fast growth poplar of the present invention
After gradient is beaten (especially the third beating degree), the content of fiber fines substantially increases white NBSK.Fiber fines
Increase have important influence to paper performance, the tensile strength of paper can be improved；The swollen degree of pulp fines is big,
Unit over dry material is taken twice or so that water takes water close to long fibre；Fiber fines can play filling in network of fibers
Effect, but due to its soft and thin characteristic, it will not block network of fibers, thus can lift the density of paper.And it is somebody's turn to do
Slurry kind is particularly suitable for production and living paper, improves the tensile strength of paper for daily use.Fiber fines in the present invention refer to by 200
The components such as the fibre debris of mesh sieve, thread fiber fines, fibre bundle.
Because the paper pulp used in the present invention is biochemical process bleaching gained Fast growth poplar chemical pulp, in pulp bleaching process
By the effect of biology enzyme, the flexibility of paper pulp fiber strengthens, and pulping process energy consumption substantially reduces, the holding of the paper pulp after mashing
Preferable flexibility and manufacturing paper with pulp property.
The purpose of gradient mashing is paper pulp is kept the good water filtering performance of paper pulp fiber when preparing paper base material,
Also to cause the exposed enough hydroxyls of paper pulp fiber shaping paper base material is possessed enough hydrogen bonds, Covalent bonding together, make
Obtain paper base material and form a chain-shaped network structure staggeredly, it is ensured that the excellent physical strength of shaping paper base material.
Beating degree and fibrous binding force, fracture length, folding strength, tearability, anti-tensile degree, absorbability, pliability etc. have multiple
Miscellaneous relation, for different pulp varieties, this relation does not have specific rule, thus need by it is substantial amounts of test into
Row research is groped, and obtains preparing the preferable beating degree of paper base material.Sulfuric acid is bleached for the biochemical process TCF of specific Fast growth poplar
Salt slurry, present invention optimization obtain the beating degree and its respective content ratio of three kinds of gradients, different ratio and gradient beating degree
Play a part of cooperative compensating between slurry, the requirement to beating degree is reduced, and conditions of beating control can be avoided bad, easily occurred
The problem of quantitative uneven.Due to the physical property and the retention of mashing, the addition of filler and filler of paper substrate prepared by tradition
There is larger relation, if to prepare a kind of specific paper substrate, it is necessary to get hold of each link.And through research, for specific
Raw material, the present invention is by controlling mashing gradient and respective content to prepare preferable paper base material.
The present invention is directed to the biochemical process TCF bleached kraft pulps of specific Fast growth poplar, through analysis and research, beating degree (15
~25 ° of SR) relatively low paper pulp fiber is longer, wire-dividing broom purification lesser extent, certain supporting role is played in paper base material, and
Ensure water filtering performance good in paper base material preparation process, the dosage of this part paper pulp fiber is typically 10%~20%；Beat
The degree of beating (30~55 ° of SR) moderate paper pulp fiber has been cut off, and fiber wire-dividing broom purification is preferable, during paper base material is prepared,
Playing a part of interweaving fibre compact and combine, the dosage proportion of this part paper pulp fiber is maximum, and usually 60~80%；
The higher paper pulp fiber of beating degree (65~75 ° of SR), the cut-out of fiber in itself is more, wire-dividing broom purification degree is very high, and fiber attenuates
Short and small, the hydroxyl and hydrogen bond exposed is more, during paper base material is prepared, plays link and interweaves more hydrogen bonds and covalently
Key, the effect in filling paper base material space, the dosage proportion of this part paper pulp fiber is less, and usually 10~20%, if
It is the physical strength that paper base material is had influence on if this ratio is more than 20%.
Refer to from adding technique, it is not necessary to extra additive, chemical pulp need to only be carried out to gradient mashing, part is few respectively
The beating degree for measuring chemical pulp improves, and fiber becomes short tiny, coordinates according to a certain percentage, instead of the use of additive.
Above-mentioned technical proposal has the advantages that：
(1) in paper-making process, the present invention is solved using gradient mashing technology and from two key technologies of adding technique
Single mashing technology and the deficiency of mixing plurality of raw materials mashing in the prior art, avoid the use of additional additive.
(2) physical properties of gradient of the invention mashing technology and the paper base material being prepared from adding technique are excellent
It is different, especially prepare paper for daily use-toilet paper.
Embodiment
With reference to embodiment, the present invention is further described.
The method that a kind of biochemical process TCF bleached kraft pulps of 1 Fast growth poplar of embodiment prepare paper base material, the implementation
Example prepares food packaging paper base material.
Step is as follows：
(1) by patent ZL201310303232.X " a kind of NBSK biochemical process TCF bleaching process of Fast growth poplar "
The high-performance that technology obtains pulp brightness 82.5%ISO, takes three parts of paper pulp to be ground using PFI completely without chlorine Fast growth poplar bleach chemical pulp
Carry out accurate defibrination so that the beating degree of paper pulp is 20 ° of SR, 45 ° of SR, 65 ° of SR respectively.
Wherein, pulp brightness is the preparation method of 82.5%ISO chemical pulp, is comprised the following steps：
1) boiling：Fast growth poplar wood chip is taken, is put into boiling in digester, obtains magma, is then washed, screened, obtain paper pulp；
The concrete mode of the boiling is：15~25mm of length, 10~20mm of width, 3~5mm of thickness Fast growth poplar wood chip are taken, it is natural
After air-drying, boiling is carried out, Fast growth poplar sulfate magma is made, the condition of boiling is：Alkali charge 20%, to over dry raw material, Na2O
Meter；Sulphidity 24%, liquor ratio 1:4,165 DEG C of boiling maximum temperature, deflation 15min, heating-up time are carried out at 105 DEG C
120min, soaking time 90min；Washed, screened after boiling, obtain paper pulp.
2) xylanase pretr eatment：The concrete mode of the xylanase pretr eatment is：It is 10% to adjust pulp density, so
Zytase X is used afterwards1Handled, in processing procedure, at interval of 12min rubbings once, taken out after processing, be put into boiling water bath
Middle 10min, zytase is inactivated terminating reaction, paper pulp is cleaned with running water；X1The process conditions of processing：Enzyme dosage 8IU/L,
Temperature 50 C, pH8, time 120min；The zytase X1Purchased from Novozymes Company, trade name Novi letter zytase
PulpzymeHC, article number CKN00117 and CDN00429, liquid, cellulose-less enzyme activity；
3) TCF is bleached：Bleached to above-mentioned by the paper pulp of ferment treatment, bleaching process O1-O2P- Q-P, bleaching process
The step of be：First, to carrying out oxygen delignification or reinforced-oxygen bleaching by the paper pulp of ferment treatment；It is right after oxygen delignification terminates
Paper pulp is washed, and then carries out Q section chelation treatments；After Q section chelation treatments terminate, paper pulp is washed, then carries out P sections
H2O2Bleaching, complete, obtain the slurries that pulp brightness is 82.5%ISO；
The O1-O2PThe concrete mode of-Q-P bleaching process is：First paragraph oxygen delignification and second segment reinforced-oxygen bleaching
Process conditions：First paragraph O1：Starch dense 10%, NaOH dosages 2.5%, oxygen pressure 0.6MPa, 100 DEG C, time 20min of temperature,
MgSO4Dosage 0.5%；Second segment O2P：The NaOH of supplement 0.5%, add 3% H2O2, Na2SiO3Dosage 0.7%, oxygen pressure
0.5MPa, time 60min；Q sections：Starch dense 8%, DTPA dosages 0.5%, temperature 70 C, time 60min, pH value 4-5；P sections：H2O2
Dosage is 2%, Na2SiO3Dosage 0.7%, MgSO4Dosage 0.5%, initial pH value 12,90 DEG C of temperature, slurry dense 10%, time
90min。
(2) the standby paper pulp fiber starched of mashing or defibrination according to 20 ° of SR of beating degree, 45 ° of SR, 65 ° of SR paper pulp fiber
Raw Material Blending Ratio 15:70:15 discongest device and discongest and it is uniformly mixed through fiber, then compressing on sheet forming apparatus
120g/m2Food is used and packs paper base material.
(3) at the same time, 45 ° of SR of beating degree 100% paper pulp fiber raw material is selected, discongesting device through fiber and discongest makes it
Uniformly mix, then the compressing 120g/m on sheet forming apparatus2Food is cooked control sample use with paper base material is packed.
(4) 120g/m for being molded both the above2Food is dried with packing paper base material and be put on electrothermal drying cylinder, so
The moisture of the packaging paper base material of balance food in drier is put into afterwards, its water tariff collection is then determined paper base material 8%
Physical strength.
(5) the gained food indices such as table 1 for packing paper base material, under identical paper pulp fiber raw material, according to ladder
Degree mashing prepare food with pack paper base material indices be better than normal condition place an order a beating degree paper pulp fiber original
Food prepared by material is used and packs paper base material.
The biochemical process TCF bleached kraft pulps of the Fast growth poplar of table 1 prepare the physical property of food packaging paper base material
Indexes Comparison list
The method that a kind of biochemical process TCF bleached kraft pulps of 2 Fast growth poplar of embodiment prepare paper base material, the implementation
Example prepares food packaging paper base material.
Step is as follows：
(1) by patent ZL201310303232.X " a kind of NBSK biochemical process TCF bleaching process of Fast growth poplar "
The high-performance that technology obtains pulp brightness 82.6%ISO, takes three parts of paper pulp to be ground using PFI completely without chlorine Fast growth poplar bleach chemical pulp
Carry out accurate defibrination so that the beating degree of paper pulp is 15 ° of SR, 40 ° of SR, 65 ° of SR respectively.
Wherein, the preparation method of pulp brightness 82.6%ISO chemical pulp, comprises the following steps：
Identical with the embodiment of the present invention 1, difference is：The concrete mode of the xylanase pretr eatment is：Adjust paper pulp
Concentration is 10%, then with zytase X2Handled, in processing procedure, at interval of 10min rubbings once, taken after processing
Go out, be put into 10min in boiling water bath, zytase is inactivated terminating reaction, paper pulp is cleaned with running water；The technique bar of X3 processing
Part：Enzyme dosage 8IU/g, temperature 50 C, pH8~9, time 120min；
(2) the standby paper pulp fiber raw material starched of mashing or defibrination according to 15 ° of SR of beating degree, 40 ° of SR, 65 ° of SR paper pulp
Fibrous raw material mixed proportion 10:80:10 discongest device and discongest and it is uniformly mixed through fiber, are then pressed on sheet forming apparatus
Type 130g/m2Food is used and packs paper base material.
(3) at the same time, 40 ° of SR of beating degree 100% paper pulp fiber raw material is selected, discongesting device through fiber and discongest makes it
Uniformly mix, then the compressing 130g/m on sheet forming apparatus2Food is cooked control sample use with paper base material is packed.
(4) 130g/m for being molded both the above2Food is dried with packing paper base material and be put on electrothermal drying cylinder, so
The moisture of the packaging paper base material of balance food in drier is put into afterwards, its water tariff collection is then determined paper base material 8%
Physical strength.
(5) the gained food indices such as table 2 for packing paper base material, under identical paper pulp fiber raw material, according to ladder
Degree mashing prepare food with pack paper base material indices be better than normal condition place an order a beating degree paper pulp fiber original
Food prepared by material is used and packs paper base material.
The biochemical process TCF bleached kraft pulps of the Fast growth poplar of table 2 prepare the physical property of food packaging paper base material
Indexes Comparison list
The method that a kind of biochemical process TCF bleached kraft pulps of 3 Fast growth poplar of embodiment prepare paper base material, the implementation
Example prepares paper for daily use sill-toilet paper.
Step is as follows：
(1) by patent ZL201310303232.X " a kind of NBSK biochemical process TCF bleaching process of Fast growth poplar "
The high-performance that technology obtains is completely without chlorine Fast growth poplar bleach chemical pulp (using the chemical pulp described in embodiment 1), pulp brightness
82.5%ISO, take three parts of paper pulp to carry out accurate defibrination using PFI mills so that the beating degree of paper pulp be respectively 15 ° of SR, 35 ° of SR,
70°SR。
(2) the standby paper pulp fiber raw material starched of mashing or defibrination according to 15 ° of SR of beating degree, 35 ° of SR, 70 ° of SR paper pulp
Fibrous raw material mixed proportion 15:75:10 discongest device and discongest and it is uniformly mixed through fiber, are then pressed on sheet forming apparatus
Type 30g/m2Paper for daily use sill.
(3) at the same time, 35 ° of SR of beating degree 100% paper pulp fiber raw material is selected, discongesting device through fiber and discongest makes it
Uniformly mix, then the compressing 30g/m on sheet forming apparatus2Paper for daily use sill, do control sample use.
(4) 30g/m for being molded both the above2Paper for daily use sill is put on electrothermal drying cylinder and dried, Ran Houfang
The moisture of balanced life paper base material into drier, make its water tariff collection 8%, the physics for then determining paper base material is strong
Degree.
(5) the indices such as table 3 of gained paper for daily use sill, under identical paper pulp fiber raw material, beats according to gradient
Starch prepare paper for daily use sill indices better than normal condition place an order a beating degree paper pulp fiber raw material prepare
Paper for daily use sill.
The biochemical process TCF bleached kraft pulps of the Fast growth poplar of table 3 prepare the physical performance index of paper for daily use sill
Compare list
The method that a kind of biochemical process TCF bleached kraft pulps of 4 Fast growth poplar of embodiment prepare paper base material, the implementation
Example prepares paper for daily use sill-toilet paper.
Step is as follows：
(1) by patent ZL201310303232.X " a kind of NBSK biochemical process TCF bleaching process of Fast growth poplar "
The high-performance that technology obtains is completely without chlorine Fast growth poplar bleach chemical pulp (using the chemical pulp described in embodiment 1), pulp brightness
82.5%ISO, take three parts of paper pulp to carry out accurate defibrination using PFI mills so that the beating degree of paper pulp be respectively 20 ° of SR, 40 ° of SR,
65°SR。
(2) the standby paper pulp fiber raw material starched of mashing or defibrination according to 20 ° of SR of beating degree, 40 ° of SR, 65 ° of SR paper pulp
Fibrous raw material mixed proportion 20:70:10 discongest device and discongest and it is uniformly mixed through fiber, are then pressed on sheet forming apparatus
Type 35g/m2Paper for daily use sill.
(3) at the same time, 40 ° of SR of beating degree 100% paper pulp fiber raw material is selected, discongesting device through fiber and discongest makes it
Uniformly mix, then the compressing 35g/m on sheet forming apparatus2Paper for daily use sill, do control sample use.
(4) 35g/m for being molded both the above2Paper for daily use sill is put on electrothermal drying cylinder and dried, Ran Houfang
The moisture of balanced life paper base material into drier, make its water tariff collection 8%, the physics for then determining paper base material is strong
Degree.
(5) the indices such as table 4 of gained paper for daily use sill, under identical paper pulp fiber raw material, beats according to gradient
Starch prepare paper for daily use sill indices better than normal condition place an order a beating degree paper pulp fiber raw material prepare
Paper for daily use sill.
The biochemical process TCF bleached kraft pulps of the Fast growth poplar of table 4 prepare the physical performance index of paper for daily use sill
Compare list
The method that a kind of biochemical process TCF bleached kraft pulps of 5 Fast growth poplar of embodiment prepare paper base material, the implementation
Example prepares white card body paper paper base material.
Step is as follows：
(1) by patent ZL201310303232.X " a kind of NBSK biochemical process TCF bleaching process of Fast growth poplar "
The high-performance that technology obtains is completely without chlorine Fast growth poplar bleach chemical pulp (using the chemical pulp described in embodiment 1), pulp brightness
82.5%ISO, take three parts of paper pulp to carry out accurate defibrination using PFI mills so that the beating degree of paper pulp be respectively 20 ° of SR, 45 ° of SR,
65°SR。
(2) the standby paper pulp fiber starched of mashing or defibrination according to 20 ° of SR of beating degree, 45 ° of SR, 65 ° of SR paper pulp fiber
Raw Material Blending Ratio 15:75:10 discongest device and discongest and it is uniformly mixed through fiber, then compressing on sheet forming apparatus
120g/m2White card body paper paper base material.
(3) at the same time, 45 ° of SR of beating degree 100% paper pulp fiber raw material is selected, discongesting device through fiber and discongest makes it
Uniformly mix, then the compressing 120g/m on sheet forming apparatus2White card body paper paper base material, does control sample use.
(4) 120g/m for being molded both the above2White card body paper paper base material, which is put on electrothermal drying cylinder, is dried, then
The moisture that white card body paper paper base material is balanced in drier is put into, makes its water tariff collection 8%, then determines the thing of paper base material
Manage intensity.
(5) the indices such as table 5 of the white card body paper paper base material of gained, under identical paper pulp fiber raw material, according to gradient
The indices of the white card body paper paper base material prepared are beaten to place an order the paper pulp fiber raw material system of a beating degree better than normal condition
Standby white card body paper paper base material.
The biochemical process TCF bleached kraft pulps of the Fast growth poplar of table 5 prepare white card body paper paper base material physical performance index
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Above-described embodiment is the preferable embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any Spirit Essences without departing from the present invention with made under principle change, modification, replacement, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (12)
1. the method that a kind of biochemical process TCF bleached kraft pulps of Fast growth poplar prepare paper base material, it is characterized in that, including with
Lower step：
The biochemical process TCF bleached kraft pulps of Fast growth poplar are subjected to gradient mashing respectively, the beating degree of the first paper pulp is
15 ~ 25 ° of SR, the beating degree of second of paper pulp is 30 ~ 55 ° of SR, and the beating degree of the third paper pulp is 65 ~ 75 ° of SR；
Then by the paper pulp of prepare three kinds of gradients according to mass ratio 10 ~ 20：60~80：10 ~ 20 made after being well mixed
Standby paper base material.
2. the method as described in claim 1, it is characterized in that：The beating degree of the first paper pulp is 20 ~ 25 ° of SR, second
The beating degree of paper pulp is 30 ~ 50 ° of SR, and the beating degree of the third paper pulp is 65 ~ 70 ° of SR.
3. the method as described in claim 1, it is characterized in that：The quality of the first paper pulp, second of paper pulp and the third paper pulp
Ratio is 15 ~ 20：65~75：10~15.
4. the method as described in claim 1, it is characterized in that：The quality of the first paper pulp, second of paper pulp and the third paper pulp
Ratio is 20：70：10.
5. the method as described in claim 1, it is characterized in that：After obtaining well mixed paper pulp, using copying the type of being made or compacting
Shaping prepares paper base material.
6. the paper base material being prepared using the method any one of claim 1 ~ 5.
7. paper base material as claimed in claim 6, it is characterized in that：The paper base material is environmental protection package paper, paper for daily use, in vain
Paperboard body paper.
8. paper base material as claimed in claim 6, it is characterized in that：The paper base material is paper for daily use, and the paper for daily use is
Toilet paper.
9. a kind of application of gradient mixed pulp in toilet paper is prepared, it is characterized in that, the preparation side of the gradient mixed pulp
Method is as follows：The biochemical process TCF bleached kraft pulps of Fast growth poplar are subjected to gradient mashing, the beating degree of the first paper pulp respectively
For 15-25 ° of SR, the beating degree of second of paper pulp is 30-55 ° of SR, and the beating degree of the third paper pulp is 65-75 ° of SR；Then will system
The paper pulp for the three kinds of gradients got ready is according to mass ratio 10 ~ 20：60~80：10 ~ 20 carry out obtaining gradient mixed paper after being well mixed
Slurry.
10. application as claimed in claim 9, it is characterized in that：The beating degree of the first paper pulp is 20 ~ 25 ° of SR, second
The beating degree of paper pulp is 30 ~ 50 ° of SR, and the beating degree of the third paper pulp is 65 ~ 70 ° of SR.
11. application as claimed in claim 9, it is characterized in that：The quality of the first paper pulp, second of paper pulp and the third paper pulp
Ratio is 15 ~ 20：65~75：10~15.
12. application as claimed in claim 11, it is characterized in that：The matter of the first paper pulp, second of paper pulp and the third paper pulp
Amount ratio is 20：70：10.
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| CN102767120A (en) * | 2012-07-12 | 2012-11-07 | 浙江金昌纸业有限公司 | Method for making raw paper of heat sublimation transfer printing paper |
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| CN104878642A (en) * | 2015-05-04 | 2015-09-02 | 杭州特种纸业有限公司 | Quantitative filter paper and preparing method and application thereof |
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|---|---|---|---|---|
| US20120080155A1 (en) * | 2009-06-11 | 2012-04-05 | Unicharm Corporation | Water disintegratable fibrous sheet |
| CN102767120A (en) * | 2012-07-12 | 2012-11-07 | 浙江金昌纸业有限公司 | Method for making raw paper of heat sublimation transfer printing paper |
| CN102912669A (en) * | 2012-11-06 | 2013-02-06 | 大唐国际发电股份有限公司 | Light offset paper filled with synthetic calcium silicate and manufacturing method thereof |
| CN104878642A (en) * | 2015-05-04 | 2015-09-02 | 杭州特种纸业有限公司 | Quantitative filter paper and preparing method and application thereof |
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