CN107858863A - A kind of preparation method of unbleached paper - Google Patents

A kind of preparation method of unbleached paper Download PDF

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Publication number
CN107858863A
CN107858863A CN201711161890.4A CN201711161890A CN107858863A CN 107858863 A CN107858863 A CN 107858863A CN 201711161890 A CN201711161890 A CN 201711161890A CN 107858863 A CN107858863 A CN 107858863A
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CN
China
Prior art keywords
slurry
degrees celsius
temperature
pulp fiber
paper
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Pending
Application number
CN201711161890.4A
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Chinese (zh)
Inventor
郭凡
郭一凡
何银仙
陈艳
曾维强
黄文娟
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Dawei Holdings Limited
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Foshan Micro Wins Agel Ecommerce Ltd
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Publication date
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Priority to CN201711161890.4A priority Critical patent/CN107858863A/en
Publication of CN107858863A publication Critical patent/CN107858863A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • D21H27/002—Tissue paper; Absorbent paper
    • 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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
    • 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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/22—Other features of pulping processes
    • D21C3/26—Multistage processes
    • D21C3/266—Multistage processes the same pulping agent being used in all stages
    • 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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
    • 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
    • D21H11/12—Pulp from non-woody plants or crops, e.g. cotton, flax, straw, bagasse
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/18—Reinforcing agents
    • D21H21/20—Wet strength agents

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)

Abstract

The present invention relates to a kind of preparation method of unbleached paper, comprise the following steps：Dress pot, boiling, oxygen delignification, mashing, condiment, dilution, purify, copy the warm page of system, squeezing, de- dry baking water, wrinkle, batch, cutting, true qualities bamboo pulp fiber paper for daily use is produced out from over dry bamboo chip, whole producing process is more environmentally-friendly, do not add bleaching agent, reduce the use of other auxiliary agents, user is not damaged, and improve the cleaning of finished product, usage experience, it is more practical.

Description

A kind of preparation method of unbleached paper
Technical field
The present invention relates to a kind of Preparation Method made of paper, more particularly to a kind of preparation method of unbleached paper.
Background technology
Paper handkerchief on the market uses fluorescer mostly at present, and agent is drifted in addition, and general high-quality toilet paper is all to use timber Make, in our daily life and everyone life it is closely bound up, in our life, be filled with everywhere Invisible bacterium, detects by expert, and the white paper towels used in our daily lifes, the presence of bacterium is even more serious, sees But it has been covered with the footprint of bacterium everywhere like pure white paper handkerchief, without notice, will have been endangered to the skin tape of baby, we are daily All come the white paper towels wiped mouth, wipe hand, grown originally in the presence of this so more bacterium, time, the bacterium in white paper towels is at me With constantly breeding, our health care belt can be given to come serious harm, the most common two kinds of bacteriums of white paper towels --- large intestine Bacillus and staphylococcus aureus, this two big bacterium, the injury to our human bodies is very big, and Escherichia coli are to human body Endangering Escherichia coli, to be that humans and animals are edible after the food of e. coli contamination, be easily caused lopsided enterogastritis, and onset is anxious, abdomen Bitterly, suffer from diarrhoea, heating, poor appetite etc., the harm staphylococcus aureus of staphylococcus aureus is aggressive bacterium, can be produced Toxin, destructive big to enteron aisle, so staphylococcus aureus enteritis onset is anxious, poisoning symptom is serious, be mainly shown as vomiting, Heating, diarrhoea.
Wherein, the technology for making paper used currently on the market is mostly to use bleaching agent to carry out bleaching to produce, can produce larger Polluter discharges, not high enough into pulp yield, and other auxiliary dosages for adding in process of production are higher may be to human body Harm is produced, pollution is also resulted in environment, and adhesion does not fully demonstrate between fiber, fibre damage is big, and quality is difficult to reach Standard.
The content of the invention
The present invention provides, and technical problem to be solved needs to carry out bleaching to paper pulp when being manufacture paper, into starching Rate is not high enough, and it is larger to be discharged pollutants using bleaching, environment is polluted larger.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：A kind of preparation method of unbleached paper, comprises the following steps：
A, pot is filled：Over dry bamboo chip is added into digester as raw material, and adds NaOH, medicine；
B, boiling：Steam is passed through to the digester after dress pot and carries out boiling 310-350 minutes, obtains slurry；
C, oxygen delignification：The slurry obtained after boiling is removed into the residual lignin in bamboo pulp fiber, obtains true qualities bamboo pulp fiber；
D, it is beaten：The true qualities bamboo pulp fiber that oxygen delignification obtains is beaten successively, finishing, after wire-dividing broom purification, starched after being put into Pond, machine chest is put into through with slurry；
E, condiment：Wet strength agent, remover are added to the true qualities bamboo pulp fiber after mashing；
F, dilution, purification：Dispersant is added to the true qualities bamboo pulp fiber after condiment；
G, the warm page of the system of copying：True qualities bamboo pulp fiber online after diluting, purifying is manufactured paper with pulp, forms one layer of l Water Paper page；
H, squeeze, de- dry baking water：L Water Paper page is squeezed, de- dry baking water, and add glutinous cylinder agent, modifying agent；
I, wrinkle：L Water Paper page to squeezing, after de- dry baking water carries out corrugation and handles to obtain true qualities bamboo pulp fiber paper for daily use body paper；
J, batch, cut：True qualities bamboo pulp fiber is subjected to cutting and rewinding, obtains true qualities bamboo pulp fiber paper for daily use.
The present invention extracts natural bamboo fibres by above-mentioned steps, and whole process is without using hazardous agents such as bleaching agents, using boiling Technology, any bleaching industrial chemicals is not added, play the role of natural bacteriostatic, waste water can directly irrigate agriculture caused by slurrying Field, it is environmentally safe, avoid conventional art and produce both to produce health and endanger, and to the disagreeableness problem of environment.
On the basis of above-mentioned technical proposal, the present invention can also do following improvement.
Further, it is 26 tons of over dry bamboo chips as raw material that pot amount is filled in the step A, be incorporated as raw material weight than 12%-17% NaOH, be incorporated as raw material weight than 18%-22%.
Further, it is further comprising the steps of in the step B：
B1, primary boiling：125-130 degrees Celsius is heated to after being passed through steam, now by NaOH and the cool white liquid temperature formed Spend for 70-80 degrees Celsius；
B2, intermediate boiling：Continue to be heated to 145-150 degrees Celsius, it is now many by NaOH and the hot white liquor temperature that forms In 140 degrees Celsius, hot white liquor clarification degree is not more than 60mg/L, and total liquid measure is 70 tons in digester；
B3, heating：Continue heat temperature raising, this fashionable dress pot inner liquid medicine temperature is 80-90 degrees Celsius, and temperature fills total liquid measure for 180 tons；
B4, insulation：Be incorporated as raw material weight 5%-7% by NaOH and the cool white liquid that forms, now holding temperature is taken the photograph for 150-160 Family name's degree, temperature fill fluid temperature for 120-135 degrees Celsius；
B5, recuperation of heat：Be incorporated as raw material weight 8%-10% by NaOH and the hot white liquor that forms, now heat fills fluid temperature and is 150-160 degrees Celsius；
B6, put pot：Now the boiling H- factors are 800-1500, put pot temperature as 80-95 degrees Celsius；
B7, spraying pot：Above-mentioned solution is delivered into spraying pot with pump, now only stripping temperature is 150-160 degrees Celsius, and slurry hardness is Permanganate number 8.5-9.5.
Further, it is further comprising the steps of in the step C：
C1, screening, purification：The slurry of gained after boiling in the step B is removed and do not steamed by joint screening, high concentration desanding device Sandstone in the bulk bamboo chip of solution, ring, crude fibre, raw material；
C2, storage：The slurry concentration of gained is 1.5%-2.5% after the step C1, recycles vacuum pulp washing machine washing device to carry The black liquor for taking the lignin that is dissolved out in the step B boilings to be formed, after the completion of slurry concentration be 12%-15%；
C3, in dense pump：Dense pump degasification during slurry obtained by after the step C2 is passed through, after the completion of slurry concentration be 10.5%- 12.5%；
C4, oxygen delignification tower：Slurry obtained by after the step C3 is passed through oxygen delignification tower, and it is in 60- to control temperature 85 degrees Celsius, pressure 0.15-0.25MPa, it is 45-60kg/t to be passed through amount of oxygen, and is passed through the NaOH of 1.5%-2.5% weight；
C5, vacuum pulp washing machine：Vacuum vacuum pulp washing machine progress alkali collection is passed through to the slurry obtained by after the step C4, completed The true qualities bamboo pulp fiber that whiteness is 30%-50%ISO is obtained afterwards and is stored.
Further, in the step D, beating consistency 4.5%-5.5%, mashing electric current is 150-200A, slurry beating It is 4.5-6.5g to spend for 26 ~ 40 ° of SR, slurry weight in wet base.
Further, in the step E, addition wet strengthening agent is 1.5%-3.5%, and it is 0.25%- to add remover dosage 0.45%。
Further, in the step F, addition dispersant dosage is 0.06%-0.15%, and slurry concentration control is existed 0.15%-0.35%。
Further, in the step H, it is 0.08%-0.2% to add glutinous cylinder agent dosage, adds modifying agent dosage and is 0.01%-0.2%, and l Water Paper page moisture is controlled to 6.5%-8.5%.
It is using the above-mentioned further beneficial effect of scheme：
Detailed processing step is provided, it is whole without using hazardous agents such as bleaching agents, natural high-quality bamboo fibre is only extracted, is retained Faint yellow, the dustless chipless of natural raw bamboo, it is naturally soft, using the molecule purification technique of specialty, by the purity of bamboo fibre A ultimate attainment height has been brought up to, has further improved usage experience.
Embodiment
The invention will be further described below：
A kind of preparation method of unbleached paper comprises the following steps：
A, pot is filled：Over dry bamboo chip is added into digester as raw material, and adds NaOH, Na2S medicines；
B, boiling：Steam is passed through to the digester after dress pot and carries out boiling 310-350 minutes, obtains slurry；
C, oxygen delignification：The slurry obtained after boiling is removed into the residual lignin in bamboo pulp fiber, obtains true qualities bamboo pulp fiber；
D, it is beaten：The true qualities bamboo pulp fiber that oxygen delignification obtains is beaten successively, finishing, after wire-dividing broom purification, starched after being put into Pond, machine chest is put into through with slurry；
E, condiment：Wet strength agent, remover are added to the true qualities bamboo pulp fiber after mashing；
F, dilution, purification：Dispersant is added to the true qualities bamboo pulp fiber after condiment；
G, the warm page of the system of copying：True qualities bamboo pulp fiber online after diluting, purifying is manufactured paper with pulp, forms one layer of l Water Paper page；
H, squeeze, de- dry baking water：L Water Paper page is squeezed, de- dry baking water, and add glutinous cylinder agent, modifying agent；
I, wrinkle：L Water Paper page to squeezing, after de- dry baking water carries out corrugation and handles to obtain true qualities bamboo pulp fiber paper for daily use body paper；
J, batch, cut：True qualities bamboo pulp fiber is subjected to cutting and rewinding, obtains true qualities bamboo pulp fiber paper for daily use.
From the foregoing, the present invention extracts natural bamboo fibres by above-mentioned steps, whole process is without using harmful system such as bleaching agent Agent, using digesting technoloy technology, any bleaching industrial chemicals is not added, there is natural bacteriostatic, waste water caused by slurrying can It is environmentally safe with direct irrigated farmland, avoid conventional art and produce both to produce health and endanger, and to environment not The problem of friendly.
Further, it is 26 tons of over dry bamboo chips as raw material that pot amount is filled in the step A, be incorporated as raw material weight than 12%-17% NaOH, be incorporated as raw material weight than 18%-22% Na2S。
Further, it is further comprising the steps of in the step B：
B1, primary boiling：125-130 degrees Celsius is heated to after being passed through steam, now by NaOH and Na2The cool white of S compositions Liquid temperature degree is 70-80 degrees Celsius；
B2, intermediate boiling：Continue to be heated to 145-150 degrees Celsius, now by NaOH and Na2The hot white liquor temperature of S compositions No less than 140 degrees Celsius, hot white liquor clarification degree is not more than 60mg/L, and total liquid measure is 70 tons in digester；
B3, heating：Continue heat temperature raising, this fashionable dress pot inner liquid medicine temperature is 80-90 degrees Celsius, and temperature fills total liquid measure for 180 tons；
B4, insulation：Be incorporated as raw material weight 5%-7% by NaOH and Na2The cool white liquid of S compositions, now holding temperature is 150- 160 degrees Celsius, temperature fills fluid temperature for 120-135 degrees Celsius, and after finishing insulation the step, the mean temperature in digester will More than 120 degrees Celsius；
B5, recuperation of heat：Be incorporated as raw material weight 8%-10% by NaOH and Na2S composition hot white liquor, now heat fill fluid temperature For 150-160 degrees Celsius, after finishing recuperation of heat the step, mean temperature is greater than 150 degrees Celsius in digester；
B6, put pot：Now the boiling H- factors are 800-1500, put pot temperature as 80-95 degrees Celsius；
B7, spraying pot：Above-mentioned solution is delivered into spraying pot with pump, now only stripping temperature is 150-160 degrees Celsius, and slurry hardness is Permanganate number 8.5-9.5.
Further, bleaching agent is used with oxygen delignification substitution, without using bleaching agent, without the production of bleaching middle-stage wastewater It is raw, the discharge of polluter is reduced, learns that 1 ton of air dried pulp can reduce COD discharge 14.355kg through production leadtime data, can increase Amount of slurry 19kg, while fibre damage is few, is increased into pulp yield, improves resource utilization, also includes in the step C Following steps：
C1, screening, purification：The slurry of gained after boiling in the step B is removed and do not steamed by joint screening, high concentration desanding device Sandstone in the bulk bamboo chip of solution, ring, crude fibre, raw material；
C2, storage：The slurry concentration of gained is 1.5%-2.5% after the step C1, recycles vacuum pulp washing machine washing device to carry The black liquor for taking the lignin that is dissolved out in the step B boilings to be formed, after the completion of slurry concentration be 12%-15%；
C3, in dense pump：Dense pump degasification during slurry obtained by after the step C2 is passed through, after the completion of slurry concentration be 10.5%- 12.5%；
C4, oxygen delignification tower：Slurry obtained by after the step C3 is passed through oxygen delignification tower, and it is in 60- to control temperature 85 degrees Celsius, pressure 0.15-0.25MPa, it is 45-60kg/t to be passed through amount of oxygen, and is passed through the NaOH of 1.5%-2.5% weight；
C5, vacuum pulp washing machine：Vacuum vacuum pulp washing machine progress alkali collection is passed through to the slurry obtained by after the step C4, completed The true qualities bamboo pulp fiber that whiteness is 30%-50%ISO is obtained afterwards and is stored.
Further, in the step D, beating consistency 4.5%-5.5%, mashing electric current is 150-200A, slurry beating It is 4.5-6.5g to spend for 26 ~ 40 ° of SR, slurry weight in wet base.
Further, in the step E, addition wet strengthening agent is 1.5%-3.5%, and it is 0.25%- to add remover dosage 0.45%。
Further, in the step F, addition dispersant dosage is 0.06%-0.15%, and slurry concentration control is existed 0.15%-0.35%。
Further, in the step H, it is 0.08%-0.2% to add glutinous cylinder agent dosage, adds modifying agent dosage and is 0.01%-0.2%, and l Water Paper page moisture is controlled to 6.5%-8.5%.
Further, different set will be can be used by true qualities bamboo pulp fiber paper for daily use resulting after batching, analyzing Standby processing forms true qualities bamboo pulp fiber series paper for daily use product, last packaging and warehousing.
It is described above, only present pre-ferred embodiments, therefore the scope that the present invention is implemented can not be limited with this, i.e., according to The equivalent changes and modifications that scope of the present invention patent and description are made, it all should still belong to the model that patent of the present invention covers In enclosing.

Claims (8)

1. a kind of preparation method of unbleached paper, it is characterised in that comprise the following steps：
A, pot is filled：Over dry bamboo chip is added into digester as raw material, and adds NaOH, medicine；
B, boiling：Steam is passed through to the digester after dress pot and carries out boiling 310-350 minutes, obtains slurry；
C, oxygen delignification：The slurry obtained after boiling is removed into the residual lignin in bamboo pulp fiber, obtains true qualities bamboo pulp fiber；
D, it is beaten：The true qualities bamboo pulp fiber that oxygen delignification obtains is beaten successively, finishing, after wire-dividing broom purification, starched after being put into Pond, machine chest is put into through with slurry；
E, condiment：Wet strength agent, remover are added to the true qualities bamboo pulp fiber after mashing；
F, dilution, purification：Dispersant is added to the true qualities bamboo pulp fiber after condiment；
G, the warm page of the system of copying：True qualities bamboo pulp fiber online after diluting, purifying is manufactured paper with pulp, forms one layer of l Water Paper page；
H, squeeze, de- dry baking water：L Water Paper page is squeezed, de- dry baking water, and add glutinous cylinder agent, modifying agent；
I, wrinkle：L Water Paper page to squeezing, after de- dry baking water carries out corrugation and handles to obtain true qualities bamboo pulp fiber paper for daily use body paper；
J, batch, cut：True qualities bamboo pulp fiber is subjected to cutting and rewinding, obtains true qualities bamboo pulp fiber paper for daily use.
A kind of 2. preparation method of unbleached paper according to claim 1, it is characterised in that：Pot amount is filled in the step A is 26 tons of over dry bamboo chips as raw material, be incorporated as raw material weight than 12%-17% NaOH, be incorporated as raw material weight than 18%- 22%.
A kind of 3. preparation method of unbleached paper according to claim 1, it is characterised in that：In the step B also include with Lower step：
B1, primary boiling：125-130 degrees Celsius is heated to after being passed through steam, now by NaOH and the cool white liquid temperature formed Spend for 70-80 degrees Celsius；
B2, intermediate boiling：Continue to be heated to 145-150 degrees Celsius, it is now many by NaOH and the hot white liquor temperature that forms In 140 degrees Celsius, hot white liquor clarification degree is not more than 60mg/L, and total liquid measure is 70 tons in digester；
B3, heating：Continue heat temperature raising, this fashionable dress pot inner liquid medicine temperature is 80-90 degrees Celsius, and temperature fills total liquid measure for 180 tons；
B4, insulation：Be incorporated as raw material weight 5%-7% by NaOH and the cool white liquid that forms, now holding temperature is taken the photograph for 150-160 Family name's degree, temperature fill fluid temperature for 120-135 degrees Celsius；
B5, recuperation of heat：Be incorporated as raw material weight 8%-10% by NaOH and the hot white liquor that forms, now heat fills fluid temperature and is 150-160 degrees Celsius；
B6, put pot：Now the boiling H- factors are 800-1500, put pot temperature as 80-95 degrees Celsius；
B7, spraying pot：Above-mentioned solution is delivered into spraying pot with pump, now only stripping temperature is 150-160 degrees Celsius, and slurry hardness is Permanganate number 8.5-9.5.
A kind of 4. preparation method of unbleached paper according to claim 1, it is characterised in that：In the step C also include with Lower step：
C1, screening, purification：The slurry of gained after boiling in the step B is removed and do not steamed by joint screening, high concentration desanding device Sandstone in the bulk bamboo chip of solution, ring, crude fibre, raw material；
C2, storage：The slurry concentration of gained is 1.5%-2.5% after the step C1, recycles vacuum pulp washing machine washing device to carry The black liquor for taking the lignin that is dissolved out in the step B boilings to be formed, after the completion of slurry concentration be 12%-15%；
C3, in dense pump：Dense pump degasification during slurry obtained by after the step C2 is passed through, after the completion of slurry concentration be 10.5%- 12.5%；
C4, oxygen delignification tower：Slurry obtained by after the step C3 is passed through oxygen delignification tower, and it is in 60- to control temperature 85 degrees Celsius, pressure 0.15-0.25MPa, it is 45-60kg/t to be passed through amount of oxygen, and is passed through the NaOH of 1.5%-2.5% weight；
C5, vacuum pulp washing machine：Vacuum vacuum pulp washing machine progress alkali collection is passed through to the slurry obtained by after the step C4, completed The true qualities bamboo pulp fiber that whiteness is 30%-50%ISO is obtained afterwards and is stored.
A kind of 5. preparation method of unbleached paper according to claim 1, it is characterised in that：In the step D, beating consistency For 4.5%-5.5%, mashing electric current is 150-200A, and slurry beating degree is 26 ~ 40 ° of SR, and slurry weight in wet base is 4.5-6.5g.
A kind of 6. preparation method of unbleached paper according to claim 1, it is characterised in that：In the step E, add wet strong Agent dosage is 1.5%-3.5%, and it is 0.25%-0.45% to add remover dosage.
A kind of 7. preparation method of unbleached paper according to claim 1, it is characterised in that：In the step F, add scattered Agent dosage is 0.06%-0.15%, and slurry concentration is controlled in 0.15%-0.35%.
A kind of 8. preparation method of unbleached paper according to claim 1, it is characterised in that：In the step H, glutinous cylinder is added Agent dosage is 0.08%-0.2%, and it is 0.01%-0.2% to add modifying agent dosage, and l Water Paper page moisture is controlled to 6.5%-8.5%.
CN201711161890.4A 2017-11-21 2017-11-21 A kind of preparation method of unbleached paper Pending CN107858863A (en)

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Cited By (4)

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Publication number Priority date Publication date Assignee Title
CN108589374A (en) * 2018-05-22 2018-09-28 四川省犍为凤生纸业有限责任公司 A kind of paper pulp manufacturing technique
CN109082943A (en) * 2018-08-08 2018-12-25 东莞市白天鹅纸业有限公司 A kind of double-colored paper extraction and its production method
CN109137597A (en) * 2018-09-05 2019-01-04 四川省犍为凤生纸业有限责任公司 A kind of production method of " 39%ISO is yellow " unbleached paper
CN111778753A (en) * 2020-07-06 2020-10-16 泰盛(江西)生活用品有限公司 Natural color bamboo pulp for improving hand feeling of natural color household paper and preparation method thereof

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CN103882758A (en) * 2014-03-29 2014-06-25 韶能集团韶关南雄珠玑纸业有限公司 Method for preparing natural color bamboo pulp fiber household paper
CN105672013A (en) * 2016-02-17 2016-06-15 四川永丰纸业股份有限公司 Natural color bamboo pulp production method and natural color paper for daily use produced through same
CN106436412A (en) * 2015-08-08 2017-02-22 四川信联融创实业有限公司 Preparation method of unbleached neosinocalamus affinis paper pulp

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Publication number Priority date Publication date Assignee Title
CN103374861A (en) * 2013-08-12 2013-10-30 夹江汇丰纸业有限公司 Production process of environmental-friendly healthful household paper
CN103882758A (en) * 2014-03-29 2014-06-25 韶能集团韶关南雄珠玑纸业有限公司 Method for preparing natural color bamboo pulp fiber household paper
CN106436412A (en) * 2015-08-08 2017-02-22 四川信联融创实业有限公司 Preparation method of unbleached neosinocalamus affinis paper pulp
CN105672013A (en) * 2016-02-17 2016-06-15 四川永丰纸业股份有限公司 Natural color bamboo pulp production method and natural color paper for daily use produced through same

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CN108589374A (en) * 2018-05-22 2018-09-28 四川省犍为凤生纸业有限责任公司 A kind of paper pulp manufacturing technique
CN109082943A (en) * 2018-08-08 2018-12-25 东莞市白天鹅纸业有限公司 A kind of double-colored paper extraction and its production method
CN109137597A (en) * 2018-09-05 2019-01-04 四川省犍为凤生纸业有限责任公司 A kind of production method of " 39%ISO is yellow " unbleached paper
CN111778753A (en) * 2020-07-06 2020-10-16 泰盛(江西)生活用品有限公司 Natural color bamboo pulp for improving hand feeling of natural color household paper and preparation method thereof

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