CN104499342B - The manufacturing process of water resistance brown paper - Google Patents

The manufacturing process of water resistance brown paper Download PDF

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Publication number
CN104499342B
CN104499342B CN201410684936.0A CN201410684936A CN104499342B CN 104499342 B CN104499342 B CN 104499342B CN 201410684936 A CN201410684936 A CN 201410684936A CN 104499342 B CN104499342 B CN 104499342B
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pulp
slurry
water resistance
brown paper
transported
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CN104499342A (en
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邵剑
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Nantong New Century Mechanical & Electrical Co ltd
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Nantong New Century Mechanical & Electrical Co ltd
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    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21FPAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F11/00Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D21F11/02Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the Fourdrinier type
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP 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
    • D21H15/00Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution
    • D21H15/02Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution characterised by configuration
    • D21H15/10Composite fibres
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP 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
    • D21H21/00Non-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
    • D21H21/14Non-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
    • D21H21/16Sizing or water-repelling agents

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Abstract

The manufacturing process of water resistance brown paper, comprises the following steps:(1)Select raw material:Select softwood pulp, hardwood pulp and bamboo pulp;(2)Raw material mixing mashing:Softwood pulp, hardwood pulp and bamboo pulp are delivered mixing slurry is made into pulping pond;(3)Defibrination process;(4)Upper machine:Sequentially pass through sizing process, dehydration procedure, drying process, squeezing process and press polish process, the pressure of squeezing process is 0.17 MPa ~ 0.21MPa, the line pressure interval of press polish process is the kN/m of 185kN/m ~ 220.Space between the length of fiber of the present invention and diametrically phase complementary fit, fiber is small, and the surface of brown paper is smooth by press polish, dense surface, even closer between surface fiber, reduces voidage, improves water resistance.

Description

The manufacturing process of water resistance brown paper
Technical field
The present invention relates to the manufacturing process of water resistance brown paper, belong to paper-making technology field.
Background technology
Brown paper, as packaging material, intensity is very high, generally in yellowish-brown, and half kraft pulp for floating or floating entirely is in light brown Color, cream color or white, quantitative 80~120g/m2, tearing toughness, rupture work(and resistance to vibration be very high, mostly roll web, There is sheet paper, use kp softwood pulp for raw material, through mashing, manufacture paper with pulp and form on fourdrinier machine, can be used as bag of cement Paper, M.G. pure sulphite paper, glue envelope paper dress, bituminized paper, cable protective paper, insulating paper etc..
More the production technology of the brown paper of maturation is typically, using sulfate wood pulp as raw material, to be fallen leaves using sulfate at present Pine slurry is raw material, and upper machine is manufactured paper with pulp after system processing before bleaching, screening, mashing, applying glue, slagging-off and net.It is calendered, carry High page glossiness, reduces page two sides poor.The brown paper of this fabrication process is highly finished kraft paper, and color and luster is shallower, is put down Slippery and the fine product quality of intensity are stable, as a kind of packaging material being popular, instead of in very large range NK natural kraft.
The production technology of highly finished kraft paper needs strict control bleaching process, it is to avoid overbleaching causes intensity decreases.
The hardness of slurry directly determines the consumption of bleaching liquor, while bleaching liquor consumption is determined, due to the hardness of every pot of slurry Federation's difference, and the difference of the slurry temperature of Various Seasonal, especially in the north, the summer in winter, the temperature difference was up to more than 15 degrees Celsius.Therefore Bleaching time per stock tank material is also variant, at most up to 0.5 more than h, so bleaching time must strictly be controlled, otherwise Due to the extension of bleaching time, although pulp brightness can be improved to a certain extent, but the mechanical strength of paper can be reduced into, and The brightness reversion chance increase of paper can be made into, quality is unstable., can be with generally by controlling bleaching temperature between 30-40 degrees Celsius Good bleaching effect is obtained, and obtains well stable mechanical strength.
The production of highly finished kraft paper needs to be glued, and bleaching a small amount of calcium hypochlorite remained in paper pulp typically will not be right Applying glue produces influence.But in actual production operation, in order to ensure the whiteness requirement of partly bleach pulp, some factories starch after bleaching A small amount of bleaching liquor is added in pond, to ensure the whiteness of slurry, or because bleaching slurry washing is not thorough enough, is caused in drift disposed slurry Still contain substantial amounts of calcium salt base, carry out applying glue workshop section, and free rosin acid anion formation rosin acid calcium precipitate, and in alum Sulfate ion formation CaSO4 precipitation.This sediment and sizing material, resin-bonded, with certain viscosity, are very easy to Fouling is precipitated on feed-line and equipment.When sediment is more, manufacturing paper with pulp for page can be directly affected, while sizing efficiency is reduced, Influence into the quality of paper.Hot weather of this phenomenon in summer becomes apparent from.
The production technology of highly finished kraft paper needs strengthened purification screening system, removes granule foreign.
The production technology of highly finished kraft paper needs the difference of correct understanding pulp brightness and Paper White Degree, suitably reduces slurry Whiteness.
Inventor passes through retrieval and found, Patent No. 2008100933910, and patent name is:Exquisite kraft paper and its life Production method, discloses the method for manufacturing brown paper using masson pine, China fir, leaf wood, although reached good brown paper Can, still, the cost of material for producing brown paper is very high, causes the cost of brown paper very high, is unfavorable for much requiring low ground Side is used.
Inventor passes through retrieval and also found, Application No. 201310246673.0, and patent name is:Absorb water brown paper and its Manufacture craft, which disclose by the mixed slurry of sulfate bleaching needle-point leaf pulp and sulfate bleached hardwood pulp is fiber Raw material, addition wet strength agent, brightening agent and the obtained water suction brown paper of dispersant, but the additive in the brown paper is a lot, leads In the actual production for causing brown paper, very intractable waste water can be produced, is unfavorable for clean manufacturing.
The content of the invention
In order to solve above-mentioned problem, the invention discloses the manufacturing process of water resistance brown paper, particular technique side Case is:
The manufacturing process of the water resistance brown paper, comprises the following steps:
(1)Select raw material:Select softwood pulp, hardwood pulp and the bamboo pulp of sulfate bleaching, the needle of sulfate bleaching The part by weight of wood pulp, hardwood pulp and bamboo pulp is 1: 1:0.3~0.7;
(2)Raw material mixing mashing:Softwood pulp, hardwood pulp and the bamboo pulp that sulfate is bleached are according to step(1)It is described Ratio deliver into pulping pond, and add into pulping pond industry water, and be uniformly mixed, obtain mixing slurry, mixing slurry Concentration be 1.5% ~ 3.0%;
(3)Defibrination process:By step(2)The mixing slurry of gained is transported to fiberizer, and mixing slurry becomes score by fiberizer Dissipate uniform, and be transported to stand-by in completion tower;
(4)Upper machine:The slurry completed in tower is transported to paper machine, sizing process, dehydration procedure, back tender is sequentially passed through Sequence, squeezing process and press polish process.
The step(2)And step(3)Between be additionally provided with addition internal sizing agent the step of(21), by step(2)Institute The mixing slurry obtained, which is first delivered in reserve pit, reserve pit, puts into internal sizing agent, and is uniformly mixed, internal sizing agent Concentration reaches 0.25% ~ 0.35%.
The internal sizing agent selects cation emulsion gum rosin.
The step(21)And step(3)Between be additionally provided with scalping step(22), by step(21)The slurry of gained is defeated It is sent in defibrator and carries out scalping, step is transported to by the slurry of defibrator(3).
The pressure of the step squeezing process is 0.17 MPa ~ 0.21MPa.
The line pressure interval of the press polish process is the kN/m of 185kN/m ~ 220.
The present invention is 1 according to part by weight from softwood pulp, hardwood pulp and bamboo pulp: 1:0.3 mixes as raw material, The length of fiber in guarantee water resistance brown paper and diametrically phase complementary fit, softwood pulp fiber are thinner, longer, more soft Soft, hardwood pulp fiber is thicker, shorter, and bamboo pulp fiber is harder, and short and small, and each fiber can be filled mutually, between fiber Space is small, can stop that moisture is entered inside brown paper, with preferable water resistance.
Meanwhile, the present invention passes through squeezing process of the pressure for 0.17 MPa ~ 0.21MPa in manufacturing process so that brown paper In moisture more thoroughly base pressure can squeeze out, pass through press polish process of the line pressure interval for the kN/m of 185kN/m ~ 220 so that ox The surface of mulberry paper is smooth by press polish, dense surface, even closer between surface fiber, reduces voidage, improves water resistance.It is logical Test is crossed, the water resistance brown paper that the present invention is manufactured, the drop of water in the drop of water resistance brown paper surface is complete to the globule Penetrate into water resistance brown paper, be able to maintain that 5.5 minutes.
Embodiment
With reference to embodiment, the present invention is furture elucidated.It should be understood that following embodiments are only used for The bright present invention rather than limitation the scope of the present invention.
Embodiment 1:
The manufacturing process of the water resistance brown paper, comprises the following steps:
(1)Select raw material:Select softwood pulp, hardwood pulp and the bamboo pulp of sulfate bleaching, the needle of sulfate bleaching The part by weight of wood pulp, hardwood pulp and bamboo pulp is 1: 1:0.3;
(2)Raw material mixing mashing:Softwood pulp, hardwood pulp and the bamboo pulp that sulfate is bleached are according to step(1)It is described Ratio deliver into pulping pond, and add into pulping pond industry water, and be uniformly mixed, obtain mixing slurry, mixing slurry Concentration be 1.5%;
(21)By step(2)The mixing slurry of gained is first delivered to input cation emulsion rosin in reserve pit, reserve pit Glue, and be uniformly mixed, the concentration of cation emulsion gum rosin reaches 0.25%;
(22)By step(21)The slurry of gained, which is transported in defibrator, carries out scalping;
(3)Defibrination process:By step(22)The mixing slurry of gained is transported to fiberizer, and mixing slurry becomes score by fiberizer Dissipate uniform, and be transported to stand-by in completion tower;
(4)Upper machine:The slurry completed in tower is transported to paper machine, sizing process, dehydration procedure, back tender is sequentially passed through Sequence, squeezing process and press polish process, the pressure of squeezing process is 0.17 MPa, and the line pressure interval of press polish process is 185kN/m.
Embodiment 2:
The manufacturing process of the water resistance brown paper, comprises the following steps:
(1)Select raw material:Select softwood pulp, hardwood pulp and the bamboo pulp of sulfate bleaching, the needle of sulfate bleaching The part by weight of wood pulp, hardwood pulp and bamboo pulp is 1: 1:0.5;
(2)Raw material mixing mashing:Softwood pulp, hardwood pulp and the bamboo pulp that sulfate is bleached are according to step(1)It is described Ratio deliver into pulping pond, and add into pulping pond industry water, and be uniformly mixed, obtain mixing slurry, mixing slurry Concentration be 2.2%;
(21)By step(2)The mixing slurry of gained is first delivered to input cation emulsion rosin in reserve pit, reserve pit Glue, and be uniformly mixed, the concentration of cation emulsion gum rosin reaches 0.3%;
(22)By step(21)The slurry of gained, which is transported in defibrator, carries out scalping;
(3)Defibrination process:By step(22)The mixing slurry of gained is transported to fiberizer, and mixing slurry becomes score by fiberizer Dissipate uniform, and be transported to stand-by in completion tower;
(4)Upper machine:The slurry completed in tower is transported to paper machine, sizing process, dehydration procedure, back tender is sequentially passed through Sequence, squeezing process and press polish process, the pressure of squeezing process is 0.19MPa, and the line pressure interval of press polish process is 205 kN/m.
Embodiment 3:
The manufacturing process of the water resistance brown paper, comprises the following steps:
(1)Select raw material:Select softwood pulp, hardwood pulp and the bamboo pulp of sulfate bleaching, the needle of sulfate bleaching The part by weight of wood pulp, hardwood pulp and bamboo pulp is 1: 1: 0.7;
(2)Raw material mixing mashing:Softwood pulp, hardwood pulp and the bamboo pulp that sulfate is bleached are according to step(1)It is described Ratio deliver into pulping pond, and add into pulping pond industry water, and be uniformly mixed, obtain mixing slurry, mixing slurry Concentration be 3.0%;
(21)By step(2)The mixing slurry of gained is first delivered to input cation emulsion rosin in reserve pit, reserve pit Glue, and be uniformly mixed, the concentration of cation emulsion gum rosin reaches 0.35%;
(22)By step(21)The slurry of gained, which is transported in defibrator, carries out scalping;
(3)Defibrination process:By step(22)The mixing slurry of gained is transported to fiberizer, and mixing slurry becomes score by fiberizer Dissipate uniform, and be transported to stand-by in completion tower;
(4)Upper machine:The slurry completed in tower is transported to paper machine, sizing process, dehydration procedure, back tender is sequentially passed through Sequence, squeezing process and press polish process, the pressure of squeezing process is 0.21MPa, and the line pressure interval of press polish process is 220 kN/m.
Control its dependent variable identical, water resistance brown paper is produced by above-mentioned 3 embodiments, water resistance is surveyed Examination, water resistance brown paper is placed in the environment of constant temperature and humidity and tested, and the globule of the size such as one is dripped on water resistance brown paper, Then the globule is waited to be completely immersed in water-fast brown paper, the record globule is completely immersed in the time in water resistance brown paper, Mei Geshi Apply example and do 3 this tests respectively, the test result of above three specific embodiment is respectively:
Embodiment 1:5.3 minutes, 4.9 minutes, 5.1 minutes;
Embodiment 2:4.9 minutes, 5.1 minutes, 5.4 minutes;
Embodiment 3:5.6 minutes, 5.1 minutes, 5.5 minutes.
Technological means disclosed in the present invention program is not limited only to the technological means disclosed in above-mentioned technological means, also includes Constituted technical scheme is combined by above technical characteristic.

Claims (4)

1. the manufacturing process of water resistance brown paper, it is characterized in that comprising the following steps:
(1)Select raw material:Select softwood pulp, hardwood pulp and the bamboo pulp of sulfate bleaching, the needlebush of sulfate bleaching The part by weight of slurry, hardwood pulp and bamboo pulp is 1: 1 : 0.3~0.7;
(2)Raw material mixing mashing:Softwood pulp, hardwood pulp and the bamboo pulp that sulfate is bleached are according to step(1)Described ratio Example is delivered into pulping pond, and adds into pulping pond industry water, and is uniformly mixed, and obtains mixing slurry, mixing slurry it is dense Spend for 1.5% ~ 3.0%;
(3)Defibrination process:By step(2)The mixing slurry of gained is transported to fiberizer, and mixing slurry becomes scattered equal by fiberizer It is even, and be transported to stand-by in completion tower;
(4)Upper machine:By complete tower in slurry be transported to paper machine, sequentially pass through sizing process, dehydration procedure, drying process, Squeezing process and press polish process, the pressure of the step squeezing process is 0.17 MPa ~ 0.21MPa, the press polish process Line pressure interval is the kN/m of 185kN/m ~ 220.
2. the manufacturing process of water resistance brown paper according to claim 1, it is characterized in that the step(2)And step (3)Between be additionally provided with addition internal sizing agent the step of(21), by step(2)The mixing slurry of gained is first delivered to storage slurry Internal sizing agent is put into pond, reserve pit, and is uniformly mixed, the concentration of internal sizing agent reaches 0.25% ~ 0.35%.
3. the manufacturing process of water resistance brown paper according to claim 2, it is characterized in that the internal sizing agent is from sun Cationic emulsions gum rosin.
4. the manufacturing process of the water resistance brown paper according to claim 3, it is characterized in that the step(21)And step (3)Between be additionally provided with scalping step(22), by step(21)The slurry of gained is transported in defibrator and carried out slightly Sieve, step is transported to by the slurry of defibrator(3).
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CN105256639B (en) * 2015-11-05 2017-11-10 义乌市义南纸业有限公司 A kind of firm and durable cop tube paper and its manufacture craft
CN105568736B (en) * 2015-12-19 2017-07-11 宁波远志立方能源科技有限公司 The production technology of brown paper
CN105507058B (en) * 2015-12-19 2017-08-04 宁波远志立方能源科技有限公司 The production technology of ox-hide card
CN105755889A (en) * 2016-04-01 2016-07-13 苏州市鼎立包装有限公司 Preparation method of flame-retardant kraft paper
CN105862497A (en) * 2016-04-01 2016-08-17 苏州市鼎立包装有限公司 Preparation method of highly air-permeable kraft paper
CN106522016A (en) * 2016-11-21 2017-03-22 广州市极合技术咨询有限公司 Burst-resistant brown paper and making method thereof
CN108735403A (en) * 2018-05-25 2018-11-02 南京林业大学 High-tension cable paper and its production method with high insulating property and tightness
CN112391874A (en) * 2019-08-19 2021-02-23 桂林奇峰纸业有限公司 Production method of coated paper for storage battery

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CN1037708C (en) * 1993-08-14 1998-03-11 黑龙江造纸厂 Process for making highly finished kraft paper
CN101100829A (en) * 2007-06-26 2008-01-09 永州湘江纸业有限责任公司 Elaborate brown paper and producing method thereof
CN101538812B (en) * 2009-04-29 2011-07-20 安徽华邦特种纸业有限公司 Blueprint base paper making technology
CN103397560A (en) * 2013-07-29 2013-11-20 金华盛纸业(苏州工业园区)有限公司 Two-sided offset paper for paper bags and preparation method of two-sided offset paper

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