CN108914660A - A kind of bank-note paper cuts cotton fiber pulp and its production technology with dry - Google Patents
A kind of bank-note paper cuts cotton fiber pulp and its production technology with dry Download PDFInfo
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- CN108914660A CN108914660A CN201810712244.0A CN201810712244A CN108914660A CN 108914660 A CN108914660 A CN 108914660A CN 201810712244 A CN201810712244 A CN 201810712244A CN 108914660 A CN108914660 A CN 108914660A
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- cotton fiber
- dry
- slurry
- cut
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- 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
- D21B1/06—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods
- D21B1/061—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods using cutting devices
-
- 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
- D21B1/02—Pretreatment of the raw materials by chemical or physical means
-
- 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
- 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
- D21H11/12—Pulp from non-woody plants or crops, e.g. cotton, flax, straw, bagasse
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Microbiology (AREA)
- Paper (AREA)
Abstract
The present invention provides a kind of bank-note papers to cut cotton fiber pulp and its production technology with dry.The production technology includes the following steps：The impurity in cotton fiber material is removed, using dry cutting method by cotton fiber material uniform cut；Cotton fiber material after dry cut is carried out to steam drift slurrying, obtains slurry；Slurry is washed, extrusion dehydration, so that the mass dryness fraction of slurry is reached 50% or more, be then packaged slurry, obtained bank-note paper with dry and cut cotton fiber pulp.The present invention also provides the bank-note papers of above-mentioned technique preparation to cut cotton fiber pulp with dry.Compare with wet process chopped fibres, production technology of the invention can substantially reduce beating energy consumption using dry cotton fiber material of cutting, it is dry to cut slurry made from cotton fiber containing only free water, it is applied for wet process and energy-saving drying provides convenience, drying cost can also be saved compared with the prior art for pulpboard of manufacturing paper with pulp using paper machine, reduce production energy consumption, it is regularity good to comb the dry pulp fiber for cutting cotton fiber material of cutting method, stock quality can be greatly improved, the regularity raising of pulp fibres, and then improve bank-note paper the quality of production.
Description
Technical field
The present invention relates to a kind of bank-note papers to cut cotton fiber pulp and its production technology with dry, belongs to bank-note paper paper pulp preparation skill
Art field.
Background technique
There are two types of bank-note paper cotton fiber slurries, and one is self-control cotton fiber slurries, and one is outsourcing cotton fiber pulpboards.
Self-control cotton fiber slurry production is that bank-note paper manufacturing enterprise outsourcing cotton fiber material carries out steaming drift slurrying, and it is fine that cotton is made
Slurry is tieed up, outsourcing cotton fiber pulpboard is that cooperation processing enterprise procurement cotton fiber material carries out steaming drift slurrying, recycles machine dried
Pulpboard is made in slurry, uses for bank-note paper manufacturing enterprise.The cotton fiber pulpboard technological process of production as shown in Figure 1, mainly include with
Lower step：Shredding removal of impurities processing is carried out to cotton fiber material using blowing equipment, to the cotton fiber material (such as three after shredding removal of impurities
Grade cotton, cotton linter etc.) it carries out steaming drift slurrying, pulping process is that alkaline cooking after bleaching or alkaline hydrogen peroxide method are once steamed and floated
At the slurry after floating to steaming is washed and cut off, and machine dried slurry is recycled to manufacture paper with pulp into pulpboard, is packaged pulpboard finished product.Its
In, outsourcing cotton fiber pulpboard the problems such as there are high production cost and poor stock qualities.
Summary of the invention
In order to solve the above technical problems, the purpose of the present invention is to provide a kind of dry lifes for cutting cotton fiber pulp of bank-note paper
Production. art, by realizing dry method uniform cut to cotton fiber, reaching reduces slurry production energy consumption, improves stock quality and at papery
The effect of amount.
In order to achieve the above objectives, the present invention provides a kind of dry production technology for cutting cotton fiber pulp of bank-note paper, packets
Include following steps：
(1) impurity in cotton fiber material is removed, using dry cutting method by cotton fiber material uniform cut；
(2) cotton fiber material after dry cut is carried out steaming drift slurrying, obtains slurry；
(3) slurry is washed, extrusion dehydration, so that the mass dryness fraction of slurry is reached 50% or more, be then packaged slurry, obtains
Cotton fiber pulp is cut with dry to bank-note paper.
Bank-note paper provided by the present invention is bank-note paper cotton fiber slurry with the dry production technology for cutting cotton fiber pulp
Vanguard technology is to add dry raw material preparation equipment and process on existing cotton fiber slurry Process ba- sis, realizes that slurrying is used
The dry method uniform cut of cotton fiber material improves slurry bleachability and neat and well spaced degree, reduces production consumption, improves stock quality, into
And improve the paper quality of cotton pulp copy paper.Wherein, in step (1), the dry cutting method can using comb cut or dissipate cut by the way of
It carries out, it is preferred to use comb cutting method.
In production technology of the invention, it is that cotton fiber material is combed after blowing-carding system shredding removal of impurities that comb, which cuts stock,
Most cotton fibers are carried out longitudinal arrangement by cotton processing, and for the sliver feeding after combing to stock-cutter, stock-cutter passes through back rotation
The shear action cut staple of knife and fixed bed plate is cut rear raw material and is used for subsequent steaming drift and refining.When in such a way that comb being cut,
It is preferred that controlling following parameter：Blank length L=VBand/(N×VKnife), wherein N is moving knife the piece number；VKnifeFor moving knife revolving speed, unit is
Rev/min；VBandFor rate of feeding, unit is m/min, i.e., can be by adjusting moving knife revolving speed and feeding speed when moving knife the piece number is certain
Etc. parameter regulations adjust and determine blank length.Preferred embodiment according to the present invention, when blank length is that 2mm (meets
The production requirement of bank-note paper refining) when, it is dry cut after cotton fiber material in fiber distribution situation it is as follows：Length is below in 1mm
The quantity of cotton fiber is 4-7%, and length is 85-90% in the quantity of the cotton fiber of 1-4mm, the cotton fiber of length 4mm or more
Quantity is 6-9%, and the sum of quantity of various cotton fibers is 100%；It is highly preferred that by comb cut in terms of 2mm cotton fiber material, it is dry cut after
Cotton fiber material in, length 1mm cotton fiber below quantity be lower than 6%, length the cotton fiber of 1-4mm quantity about
It is 88%, the quantity of the cotton fiber of length 4mm or more is lower than 7%, and the sum of quantity of various cotton fibers is 100%.Above-mentioned quantity
Percentage is the percentage of number of fiber, i.e. the percentage that accounts for total fiber radical of number of fiber within the scope of certain length.Pass through
Dry to cut slurry made from cotton fiber material without half stuff processing, it is pulp that for slurry containing only free water, the dry difficulty of de-watering of slurries is low
Production provides technical guarantee.
In production technology of the invention, it is preferable that in step (2), the steaming drift slurrying is carried out using biological enzyme,
Because using the dry of comb cutting method cuts cotton fiber material, the drift available optimization of pulping process is steamed, the present invention can be using biology
Enzyme pre-processes the cotton fiber material after dry cut, then is bleached using alkaline hydrogen peroxide method.
In production technology of the invention, it is preferable that the enzyme that the biological enzyme uses is pectase.With cotton fiber material
Quality meter, the additional amount of the pectase may be controlled to 0.2-0.5%；Preferably, pretreated reaction temperature is 60 DEG C,
Reaction time is 30 minutes.
In production technology of the invention, in step (3), after being washed to the slurry steamed after floating, it should utilize and squeeze
The mode of pressure sloughs the moisture in slurry as far as possible, it may be necessary to which auxiliary carries out vacuum dehydration processing to slurry.
In temperature lower season (winter, daily mean temperature be lower than 5 degree), the mass dryness fraction of the pulp of extrusion dehydration 50% with
On, directly it can transport or use without drying.In temperature higher season (three seasons other than winter, daily mean temperature
Higher than 5 degree), to prevent slurry corrupt, summer (the 6-8 month) needs slurry is dry to 85% or more mass dryness fraction, spring and autumn (the 3-5 month
With the 9-11 month) it needs then slurry is packaged again, is produced and used for bank-note paper by slurry drying to 75% or more mass dryness fraction.Wherein,
Being dried can be carried out by way of carrying out expansion drying or blade drying to the slurry after extrusion dehydration.
Other than being dried, in spring, summer, three seasons of autumn, it is also contemplated that being used to the bank-note paper being prepared dry
Cotton fiber pulp addition fungicide (such as different plug file quinoline ketone fungicide or other slurry bactericide bacteriostasis agent) are cut, it can be direct
Transport uses the pulp (50% or more mass dryness fraction) after extrusion dehydration.
The present invention also provides a kind of bank-note papers to cut cotton fiber pulp with dry, is prepared by above-mentioned production technology.
Technical solution provided by the present invention has the following technical effects：
1, cost advantage：
Co-occurrence bank-note paper produces pulpboard used and compares, and the production cost of technical solution of the present invention is lower, a portion
It is blank cost, dry pulp of cutting is dry cutting method cutting cotton fiber, it is dry to cut slurry made from cotton fiber containing only free water, it is cotton fiber
Wet process apply and energy-saving drying provides convenience, cut off cotton fiber ratio with wet process, blank energy consumption substantially reduces；Another part is dry
Dry cost, cotton starch plate are after blank mashing with machine dried, and dry pulp of cutting is without wet process mashing, and fiber does not absorb water swollen, slurry
Only contain free water, extrusion dehydration mass dryness fraction is high, can be used directly, reduce drying cost, even if be dried to 85% or more it is dry
Degree, dehydration cost are produced also below cotton starch plate.
2, quality-advantage：
Dry cotton fiber pulp fibers of cutting are regularity good, while without wet process mashing cutting, fiber is without swollen, after can be avoided
The contraction and keratinization of fiber caused by continuous drying process reduce production process to the adverse effect of stock quality.
3, slurrying sizing process optimizes：
Cotton fiber material is processed using dry cutting method, raw material containing it is miscellaneous be reduced to 0.1% or so (processing cotton containing miscellaneous 0.4% or so,
Raw cotton contains miscellaneous 0.8% or so), substantially without the big impurity of macroscopic, it is possible to optimize pulping process, using biological enzyme isothermal
Slurrying is carried out with production technology.
Detailed description of the invention
Fig. 1 is cotton fiber pulpboard technological process of production schematic diagram.
Fig. 2 is the dry technological process of production schematic diagram for cutting cotton fiber pulp of bank-note paper that embodiment 2 provides.
Fig. 3 is that comb cuts material preparation technology flow diagram.
Fig. 4 is to dissipate to cut material preparation technology flow diagram.
Specific embodiment
In order to which technical characteristic of the invention, purpose and beneficial effect are more clearly understood, now to skill of the invention
Art scheme carries out described further below, but should not be understood as that limiting the scope of the invention.
Embodiment 1
Test is dried from slurrying using self-control half stuff and dry blank, specific test situation is as follows：
1, test raw material
Make half stuff by oneself：Three comb noils of papermaking steam drift slurry, blank to weight in wet base 20g or so.
Dry blank is from slurrying：Teng Long group, which dissipates to cut three-level cotton, comb noil and cotton linter mixing and steam, floats slurry (mixed proportion 1:
1:1)。
This test is the dehydration complexity and drying effect in order to compare different slurries, therefore takes unified steaming drift work
Skill, using conventional production process.The main technologic parameters of the pulping process of above-mentioned slurry are as shown in table 1.
Table 1
Wherein, TC-1 is wetting agent, and DTPA (diethyl pentetic acid) is stabilizer.
2, drying means：
Expansion drying：Heated-air drying
Blade is dry：Blade contact drying
3, drying test：
The initial mass dryness fraction of two kinds of raw materials is mass dryness fraction after manual compression, and self-control half stuff is 18.5%, dissipates blank from slurrying and is
36.36%.Test is dried to two kinds of raw materials using two kinds of drying means, and adjusts dry running parameter, carries out 9 sides altogether
Case drying test, concrete condition are as shown in table 2.
Table 2
Dry it can be seen from the drying test result of table 1 to cut slurry drying and dehydrating difficulty made from cotton fiber material low, fine
Dimension can carry out pulp production without winding.
Embodiment 2
A kind of dry production technology for cutting cotton fiber pulp of bank-note paper is present embodiments provided, process is as shown in Fig. 2, tool
Body includes the following steps：
Dry raw material preparation：Using three-level cotton raw material, carry out cotton carding and blank, detailed process be shredding, removal of impurities, feeding, cotton carding,
Receipt, blank, 2 millimeters of blank length.
Steam drift slurrying：Steaming drift is carried out to slurry using rotary spherical digester equipment, alkali (sodium hydroxide) amount is 2%, and amount of hydrogen peroxide is
1.5%, temperature is 90 DEG C, steams the drift time 60 minutes.
Slurry washing：Slurry is washed.
Extrusion dehydration：Extrusion dehydration is carried out after slurry washing, mass dryness fraction is 56% after extrusion dehydration.
Pulp is dry：Expansion drying is carried out to the slurry of extrusion dehydration, the temperature of expansion drying is set as 130 DEG C, discharging
Per hour for 600 kilograms, discharging mass dryness fraction is 85% to amount.
Metering is packaged：Metering packing is carried out to the pulp for completing dry, obtains pulp finished product.
The blank Cost comparisons of different material preparation technologies are as shown in table 3.
Table 3
Comb cuts the process flow of stock as shown in figure 3, specifically including following steps：
It is that cotton fiber material carries out cotton carding processing after blowing-carding system shredding removal of impurities that comb, which cuts stock, and most cottons are fine
Dimension carries out longitudinal arrangement, the sliver feeding after combing to stock-cutter, and stock-cutter is made by the shearing of revolution moving knife and fixed bed plate
With cut staple, cuts rear raw material and used for subsequent steaming drift and refining.
Blank length sets explanation：
N moving knife the piece number, VKnifeMoving knife revolving speed (rev/min) and VBandRate of feeding (m/min) determines blank length, specific to calculate such as
Under：
Blank length L=VBand/(N*VKnife)
When i.e. moving knife the piece number is certain, it can adjust and determine that blank is long by moving knife revolving speed and feeding speed etc. parameter regulations
Degree.At 2 millimeters of blank length, blade number 6,500 revs/min of moving knife revolving speed, feeding speed is 6 ms/min.
Comb cuts rear fiber distribution：
When blank length is set as 2 millimeters (meeting the production requirement of bank-note paper refining), fiber distribution is as follows：Length is in 1mm
The amount of cotton fiber below is 4-7%, and length is 85-90%, the cotton fiber of length 4mm or more in the amount of the cotton fiber of 1-4mm
Amount 6-9%.
The process flow for cutting stock is dissipated as shown in figure 4, specifically including following steps：
Dissipate that cut stock be cotton fiber after shredding cleans, by the direct feeding of cotton at random to stock-cutter blank, blank
Machine bin outlet adds sieve, and stock-cutter knife number is certain, passes through setting feeding speed, cutter rotating velocity, discharging wind-force and sieve pore
The adjustment such as parameter and determining blank length are cut rear raw material and are used for subsequent steaming drift and refining.
Blank principle：To stock-cutter, the cotton fiber material once cut off enters feed bin for cotton fiber material feeding after shredding,
Under the draft effect of discharging blower, a part is prescinded raw material and is sent out by sieve, the length that discharges and mesh size, aperture
Rate is related with draft effect size, and long raw material is trapped in feed bin partially, and next blank process is entered under the drive of cutter rotation.
It dissipates and cuts rear fiber distribution：
When blank length is set as 2-3 millimeters (meeting the production requirement of bank-note paper refining), fiber distribution is as follows：Length exists
The amount of 1mm cotton fiber below is within 15%, and length is 60-70%, length 4mm or more in the amount of the cotton fiber of 1-4mm
15% or more the amount of cotton fiber.
Existing pulpboard manufacturing enterprise is wet feed preparation, and blank mode receives multi-processing with making three supports, to steam blank after drift, ton blank
Power consumption at thousand yuan or more, it is dry cut pulp and either comb to cut or dissipate cut, ton blank power consumption is existing well below pulpboard manufacturing enterprise
Production technology.
Dry pulp cotton fiber length of cutting manufactured in the present embodiment is evenly distributed, better than the pulpboard of existing wet feed preparation, conducive to mentioning
High stock quality；Dry pulp of cutting reduces process of manufacture to the wound of cotton fiber without re-dry process after fibre swelling water suction
Evil is conducive to improve stock quality.
Claims (10)
1. a kind of dry production technology for cutting cotton fiber pulp of bank-note paper comprising following steps：
(1) impurity in cotton fiber material is removed, using dry cutting method by cotton fiber material uniform cut；
(2) cotton fiber material after dry cut is carried out steaming drift slurrying, obtains slurry；
(3) slurry is washed, extrusion dehydration, so that the mass dryness fraction of slurry is reached 50% or more, be then packaged slurry, obtains paper money
Ticket paper cuts cotton fiber pulp with dry.
2. production technology according to claim 1, wherein in step (1), the dry cutting method is cut using comb or dissipated and cut
Mode carries out.
3. production technology according to claim 2, wherein when in such a way that comb being cut, control following parameter：
Blank length L=VBand/(N×VKnife)
Wherein, N is moving knife the piece number；VKnifeFor moving knife revolving speed, unit is rev/min；VBandFor rate of feeding, unit is m/min.
4. production technology according to claim 3, wherein the blank length be 2mm, it is dry cut after cotton fiber material
In, length is 4-7% in the quantity of 1mm cotton fiber below, and length is 85-90%, length in the quantity of the cotton fiber of 1-4mm
The amount of the cotton fiber of 4mm or more is 6-9%, and the sum of quantity of various cotton fibers is 100%；
Preferably, length is lower than 6% in the quantity of 1mm cotton fiber below, and length is in the quantity of the cotton fiber of 1-4mm
The quantity of the cotton fiber of 88%, length 4mm or more is lower than 7%, and the sum of quantity of various cotton fibers is 100%.
5. production technology according to claim 1, wherein in step (2), steaming drift slurrying using biological enzyme into
Row, pre-processes the cotton fiber material after dry cut using biological enzyme, then is bleached using alkaline hydrogen peroxide method.
6. production technology according to claim 5, wherein the enzyme that the biological enzyme uses is pectase；With cotton fiber
The quality meter of raw material, the additional amount of the pectase are 0.2-0.5%；Preferably, pretreated reaction temperature is 60 DEG C, reaction
Time is 30 minutes.
7. production technology according to claim 1, wherein the step (3) further includes while extrusion dehydration, to slurry
Material carries out the operation of vacuum dehydration processing.
8. production technology according to claim 1, wherein in spring and autumn, the mass dryness fraction of the slurry reach 75% with
On；Reach 85% or more in the mass dryness fraction of summer, the slurry.
9. production technology according to claim 1, wherein the step (3) further includes：By to the slurry after extrusion dehydration
Material carries out expansion drying or the drying mode of blade drying is handled, alternatively, cutting cotton with dry to the bank-note paper being prepared
The operation of fiber pulp addition fungicide；Preferably, the fungicide is that different plug files quinoline ketone fungicide.
It is by the described in any item production technology preparations of claim 1-9 10. a kind of bank-note paper cuts cotton fiber pulp with dry
's.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810712244.0A CN108914660A (en) | 2018-07-03 | 2018-07-03 | A kind of bank-note paper cuts cotton fiber pulp and its production technology with dry |
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| CN201810712244.0A CN108914660A (en) | 2018-07-03 | 2018-07-03 | A kind of bank-note paper cuts cotton fiber pulp and its production technology with dry |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111455706A (en) * | 2020-04-24 | 2020-07-28 | 赛得利（福建）纤维有限公司 | Method for preparing dissolving pulp from waste cotton fabric, waste cotton yarn and other waste cotton materials |
| CN114657811A (en) * | 2022-02-18 | 2022-06-24 | 临清市正德短绒纸业有限公司 | Production process of cotton linter pulp |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111455706A (en) * | 2020-04-24 | 2020-07-28 | 赛得利（福建）纤维有限公司 | Method for preparing dissolving pulp from waste cotton fabric, waste cotton yarn and other waste cotton materials |
| CN111455706B (en) * | 2020-04-24 | 2021-11-05 | 赛得利（福建）纤维有限公司 | Method for preparing dissolving pulp from waste cotton fabric, waste cotton yarn and other waste cotton materials |
| CN114657811A (en) * | 2022-02-18 | 2022-06-24 | 临清市正德短绒纸业有限公司 | Production process of cotton linter pulp |
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