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CN107964825A - A kind of low grammes per square metre case paper body paper and its production method and application - Google Patents

A kind of low grammes per square metre case paper body paper and its production method and application Download PDF

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Publication number
CN107964825A
CN107964825A CN201711207872.5A CN201711207872A CN107964825A CN 107964825 A CN107964825 A CN 107964825A CN 201711207872 A CN201711207872 A CN 201711207872A CN 107964825 A CN107964825 A CN 107964825A
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China
Prior art keywords
slurry
paper
per square
square metre
grammes per
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CN107964825B (en
Inventor
张素风
刘叶
刘丽娜
徐永射
孙志
张炜
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Shaanxi University of Science and Technology
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Shaanxi University of Science and Technology
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    • 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
    • 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
    • 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
    • D21H11/00Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/02Chemical or chemomechanical or chemothermomechanical pulp
    • 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
    • D21H11/00Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/02Chemical or chemomechanical or chemothermomechanical pulp
    • D21H11/04Kraft or sulfate pulp
    • 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
    • D21H17/00Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20Macromolecular organic compounds
    • D21H17/21Macromolecular organic compounds of natural origin; Derivatives thereof
    • D21H17/24Polysaccharides
    • D21H17/28Starch
    • D21H17/29Starch cationic
    • 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
    • D21H19/00Coated paper; Coating material
    • D21H19/80Paper comprising more than one coating
    • D21H19/84Paper comprising more than one coating on both sides of the substrate
    • 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
    • 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
    • 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
    • D21H21/18Reinforcing agents
    • D21H21/20Wet strength agents
    • 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
    • D21H27/00Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/10Packing paper

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Paper (AREA)

Abstract

The present invention relates to a kind of low grammes per square metre case paper body paper and its production method and application, will first bleach size degradation after leaf wood reducing rules pulpboard and the mixing of bleached sulphate softwood pulp pulpboard, and obtain slurry A;Slurry A be dehydrated simultaneously defibrination, obtains slurry B;The concentration for adjusting slurry B is 0.5~1.0%, obtains slurry C;The auxiliary agent of slurry C mass fraction 2.25~6.15% is added, is uniformly mixed and obtains slurry D;Top wire former, dehydration, squeezing and drying are carried out successively using slurry D, obtain low grammes per square metre case paper body paper.The present invention will bleach size degradation after leaf wood reducing rules pulpboard and the mixing of bleached sulphate softwood pulp pulpboard raw material, defibrination is carried out again, adjust slurry concentration after grinding, add auxiliary agent, it is copied into paper on a papermaking machine after mixing, has obtained light basis weight case paper, the present invention can be on the basis of paper sheet stiffness and intensity be ensured, the production technology of case paper body paper is improved, produces the case paper body paper of high-stiffness light basis weight.

Description

A kind of low grammes per square metre case paper body paper and its production method and application
Technical field
The invention belongs to pulp technology for making paper, and in particular to a kind of low grammes per square metre case paper body paper and its production method and should With.
Background technology
The part as commodity is packed, has the function that to promote consumption in fierce market competition, while also make Into the wasting of resources, cause the cost increase of product, competitiveness declines.In terms of package design, carry out the reason of " light, thin, small " Read, consumer is easily opened simple packaging, the pollution of discarded object can also be reduced.Light basis weight art post paperboard is small The important housing material of type high-grade goods and high value added product, in the packaging of cigarette, cosmetics, medicine, high-grade gift etc. In, reach millions of tons per annual requirement.The art post paperboard (case paper) for being presently used for cigarette bag is mostly quantification of 220~230g/m2's One side coating art post paperboard.According to domestic current art post paperboard production technology, case paper cannot then be met by reducing the quantitative of art post paperboard The quality requirement of high-stiffness.
201210584457.2 patented invention of application number provides the art post paperboard and its production technology of a kind of light basis weight, including Body paper and coating layer, the body paper are made of the surface layer, sandwich layer and bottom being sequentially overlapped, and sandwich layer is using BCTMP slurries, bleached chemical Slurry, broken are formed, and fibre modification enzyme is added with the BCTMP slurries.This method can obtain good fibre strength, strengthen into Bond strength between paper, but need that three layers of surface layer, sandwich layer and bottom are compound, and required slurry is more, makes relative complex, and cost is opposite It is higher.
The content of the invention
It is an object of the invention to overcome problems of the prior art, there is provided a kind of low grammes per square metre case paper body paper and its Production method and application, produce the case paper body paper of high-stiffness light basis weight, and can be applied to prepare light basis weight art post paperboard.
In order to achieve the above object, the present invention adopts the following technical scheme that:
Comprise the following steps:
(1) size degradation after mixing bleaching leaf wood reducing rules pulpboard and bleached sulphate softwood pulp pulpboard, obtains slurry A;
(2) slurry A be dehydrated simultaneously defibrination, obtain slurry B;
(3) concentration for adjusting slurry B is 0.5~1.0%, obtains slurry C;Add slurry C mass fraction 2.25~ 6.15% auxiliary agent, is uniformly mixed and obtains slurry D;
(4) Top wire former, dehydration, squeezing and drying are carried out successively using slurry D, obtain low grammes per square metre case paper body paper.
Further, bleaching leaf wood reducing rules pulpboard and bleached sulphate softwood pulp pulpboard press quality in step (1) Than for 5:5~8:2 mixing.
Further, it is 6%~15% that slurry concentration is dewatered in step (2), and refining concentration is 6%~15%.
Further, the beating degree of slurry B is 40 ° of SR~45 ° SR in step (2).
Further, auxiliary agent accounts for bleaching leaf wood reducing rules pulpboard and bleaching sulfuric acid respectively including addition in step (3) The wet strength agent of salt softwood pulp pulpboard over dry gross mass 0.6~2.0%, 1.0~3.0% cationic starch, 0.5~ 0.9% helps very agent and 0.15~0.25% sizing agent.
Further, wet strength agent PAE, sizing agent AKD.
Further, Top wire former is manufactured paper with pulp shaping using individual layer in step (4).
Further, in step (4) mass dryness fraction of low grammes per square metre case paper body paper 92~94%.
The low grammes per square metre case paper body paper obtained using production method as described above.
Application of the low grammes per square metre case paper body paper in light basis weight art post paperboard is prepared as described above.
Compared with prior art, the present invention has technique effect beneficial below:
The present invention will bleach size degradation after leaf wood reducing rules pulpboard and the mixing of bleached sulphate softwood pulp pulpboard raw material, then Defibrination is carried out, slurry concentration after mill is adjusted, adds auxiliary agent, be copied into paper on a papermaking machine after mixing, it is low fixed to have obtained Case paper is measured, the present invention on the basis of paper sheet stiffness and intensity is ensured, can improve the production technology of case paper body paper, production Go out the case paper body paper of high-stiffness light basis weight.
Further, the present invention is manufactured paper with pulp shaping using individual layer, it is not necessary to is layered and is manufactured paper with pulp, papermaking process is simple, greatly reduces Time and cost.
It is special with light basis weight, high-stiffness and preferable mechanical strength etc. using the case paper body paper of the method for the present invention manufacture Point, body paper are quantitative in 150.8~152.8g/m2Between, deflection can be more than 2.9mNm, and tensile strength is more than 3.83KN/m, Burst index is more than 3.80kPam2/g。
Body paper of the present invention can obtain quantification of 191.5g/m by the primary coat front coating process that face applies twice2It is low Quantitative art post paperboard, its tensile strength are more than 4.69KN/m, and deflection is more than 6.05mNm, and interfacial bonding strength is more than 138J/m2, Folding strength is more than 100 times, and Cobb values are in 26.4~28.0g/ ㎡.
Embodiment
The preparation method is that:
1) raw material first, is bleached leaf wood reducing rules pulpboard and bleached sulphate softwood pulp pulpboard is matched somebody with somebody according to certain It is 3 in bleaching leaf wood reducing rules pulpboard and bleached sulphate softwood pulp pulpboard total mass concentration than adding hydrabrusher Abundant size degradation under~5%, until fiber is uniformly dispersed;Wherein, raw material bleaching leaf wood reducing rules pulpboard and bleached sulphate pin Proportioning between leaf wood pulp pulpboard is the key of technique, bleaching leaf wood reducing rules pulpboard account for bleaching leaf wood reducing rules pulpboard and The 50~80% of bleached sulphate needlebush pulpboard gross mass;
2) it is 6%~15% that secondly, the good slurry of size degradation is dewatered to slurry concentration by screw extrusion, and is transported to highly concentrated Pulp storage tower is spare, and highly concentrated pulp storage tower is to ensure the stability of the continuity of production and product;
3) slurry of highly concentrated pulp storage tower then, is carried out mixing defibrination with helical feed to middle-density refiner, adjusts defibrination Concentration is 6%~15% (mass fraction), and the beating degree after defibrination is 40 ° of SR~45 ° SR, and the slurry after mill stores slurry after being sent into mill Pond;Wherein, refining concentration is preferably 10% (mass fraction).
4) it is 0.5~1.0% to adjust slurry concentration, addition wet strength agent PAE 0.6~2.0%, cationic starch 1.0~ 3.0%th, very agent 0.5~0.9%, sizing agent AKD 0.15~0.25% are helped, is uniformly mixed;Wherein, the addition of each chemicals Amount is relative to the mass fraction of starting bone dry fiber slurry, wherein starting bone dry fiber slurry refers to bleach deciduous machine Starch the over dry gross mass of pulpboard and bleached sulphate softwood pulp pulpboard;Very agent is helped to come from Qingzhou Jin Hao Chemical Co., Ltd.s, Gu Content is 40%.
5) finally, Top wire former, dehydration, squeezing and drying on a papermaking machine, obtains low grammes per square metre case paper body paper.Page into Type is that individual layer is manufactured paper with pulp shaping, it is not necessary to which layering is manufactured paper with pulp, and copy paper technique is simple.
The present invention is described in further details with reference to specific embodiment.
Embodiment 1:
1) first, bleaching leaf wood reducing rules pulpboard and bleached sulphate softwood pulp pulpboard according to 7:3 proportioning adds Enter the abundant size degradation of hydrabrusher;
2) secondly, the good slurry of size degradation is dehydrated and spare, the highly concentrated pulp storage tower that is transported to highly concentrated pulp storage tower by screw extrusion It is to ensure the stability of the continuity of production and product;
3) slurry of highly concentrated pulp storage tower then, is carried out defibrination, refining concentration 10% with helical feed to middle-density refiner (mass fraction), the beating degree after defibrination are 40 ° of SR, and the slurry after mill is sent into reserve pit after mill;
4) it is 0.8% to adjust slurry concentration, the wet strength agent PAE of the opposite starting bone dry fiber stock quality 0.8% of addition, 1.5% cationic starch, 0.8% help very agent and 0.25% sizing agent AKD, are uniformly mixed;
5) finally, Top wire former, dehydration, squeezing and drying on a papermaking machine, drying curve use 70-110-70 DEG C, into Paper mass dryness fraction 93% or so, obtains low grammes per square metre case paper body paper.
The paper produced in aforementioned manners has higher deflection and preferable mechanical strength, quantitative 151.6g/m2Original Paper deflection is more than 2.75mNm, and tensile strength is more than 3.63KN/m, and burst index is more than 3.30kPam2/g。
Obtained low grammes per square metre case paper is by the primary coat front coating process that face applies twice, re-dry, roll paper, on demand Pack, warehousing finished products, quantification of 193.5g/m can be obtained2Light basis weight art post paperboard, its tensile strength is more than 4.15KN/m, deflection More than 5.43mNm, interfacial bonding strength is more than 112J/m2, for folding strength more than 100 times, Cobb values are less than 28.0g/ ㎡.
During coating:
(1) bottom-coating:Quantitative dispersant adds suitable quantity of water → stirring → calcium carbonate (grind into powder, is stirred after addition) → two level china clay (grind into powder, is stirred after addition) → lubricant → water repellent agent → latex → urea → reddish blue → CMC → increasing White agent (first with hot water dissolving) → AC-05 defoamers → adjusting pH stirrings are spare.
(2) painting coating:A certain amount of dispersant adds suitable quantity of water → stirring → calcium carbonate, and (grind into powder, is stirred after addition Mix) → level-one china clay (grind into powder, is stirred after addition) → water repellent agent → latex → urea → reddish blue → CMC → brightening agent It is spare after (first with hot water dissolving) → AC-05 defoamers → adjusting pH stirrings.
(3) coating weight:Coating weight about 40-50g/m2
Embodiment 2:
1) first, bleaching leaf wood reducing rules pulpboard, bleached sulphate softwood pulp pulpboard according to 7:3 proportioning adds The abundant size degradation of hydrabrusher;
2) secondly, the good slurry of size degradation is dehydrated and spare, the highly concentrated pulp storage tower that is transported to highly concentrated pulp storage tower by screw extrusion It is to ensure the stability of the continuity of production and product;
3) slurry of highly concentrated pulp storage tower then, is carried out defibrination, refining concentration 6% with helical feed to middle-density refiner (mass fraction), the beating degree after defibrination are 42 ° of SR, and the slurry after mill is sent into reserve pit after mill;
4) it is 0.5% to adjust slurry concentration, the wet strength agent PAE of the opposite starting bone dry fiber stock quality 0.6% of addition, 3% cationic starch, 0.5% help very agent and 0.15% sizing agent AKD, are uniformly mixed;
5) finally, Top wire former, dehydration, squeezing and drying on a papermaking machine, drying curve use 70-110-70 DEG C, into Paper mass dryness fraction 94% or so, obtains low grammes per square metre case paper body paper, and body paper is coated successively, re-dry, roll paper, is beaten on demand Bag, warehousing finished products.
The paper produced in aforementioned manners has higher deflection and preferable mechanical strength, quantitative 150.8g/m2Original Paper deflection is more than 2.90mNm, and tensile strength is more than 3.83KN/m, and burst index is more than 3.80kPam2/g.By once bottom The front coating process that face applies twice is applied, quantification of 191.5g/m can be obtained2Light basis weight art post paperboard, its tensile strength is more than 4.69KN/m, deflection are more than 6.05mNm, and interfacial bonding strength is more than 138J/m2, for folding strength more than 100 times, Cobb values are small In 27.0g/ ㎡.
Embodiment 3:
1) first, bleaching leaf wood reducing rules pulpboard, bleached sulphate softwood pulp pulpboard according to 7:3 proportioning adds The abundant size degradation of hydrabrusher;
2) secondly, the good slurry of size degradation is dehydrated and spare, the highly concentrated pulp storage tower that is transported to highly concentrated pulp storage tower by screw extrusion It is to ensure the stability of the continuity of production and product;
3) slurry of highly concentrated pulp storage tower then, is carried out defibrination, refining concentration 15% with helical feed to middle-density refiner (mass fraction), the beating degree after defibrination are 45 ° of SR, and the slurry after mill is sent into reserve pit after mill;
4) it is 1.0% to adjust slurry concentration, the wet strength agent PAE of the opposite starting bone dry fiber stock quality 1.5% of addition, 2.0% cationic starch, 0.9% help very agent, 0.2% sizing agent AKD, are uniformly mixed;
5) finally, Top wire former, dehydration, squeezing and drying on a papermaking machine, drying curve use 70-110-70 DEG C, into Paper mass dryness fraction 92% or so, obtains low grammes per square metre case paper body paper, and body paper is coated successively, re-dry, roll paper, is beaten on demand Bag, warehousing finished products.
The paper produced in aforementioned manners has higher deflection and preferable mechanical strength, quantitative 151.0g/m2Original Paper deflection is more than 2.79mNm, and tensile strength is more than 3.80KN/m, and burst index is more than 3.67kPam2/g.By once bottom The front coating process that face applies twice is applied, quantification of 192.0g/m can be obtained2Light basis weight art post paperboard, its tensile strength is more than 4.50KN/m, deflection are more than 5.30mNm, and interfacial bonding strength is more than 145J/m2, for folding strength more than 100 times, Cobb values are small In 28.0g/ ㎡.
Embodiment 4:
1) first, bleaching leaf wood reducing rules pulpboard, bleached sulphate softwood pulp pulpboard according to 7:3 proportioning adds The abundant size degradation of hydrabrusher;
2) secondly, the good slurry of size degradation is dehydrated and spare, the highly concentrated pulp storage tower that is transported to highly concentrated pulp storage tower by screw extrusion It is to ensure the stability of the continuity of production and product;
3) slurry of highly concentrated pulp storage tower then, is carried out defibrination, refining concentration 8% with helical feed to middle-density refiner (mass fraction), the beating degree after defibrination are 45 ° of SR, and the slurry after mill is sent into reserve pit after mill;
4) it is 0.9% to adjust slurry concentration, the wet strength agent PAE of the opposite starting bone dry fiber stock quality 2% of addition, 1% cationic starch, 0.7% help very agent, 0.2% sizing agent AKD, are uniformly mixed;
5) finally, Top wire former, dehydration, squeezing and drying on a papermaking machine, drying curve use 70-110-70 DEG C, into Paper mass dryness fraction 93.5% or so, obtains low grammes per square metre case paper body paper, and body paper is coated successively, re-dry, roll paper, is beaten on demand Bag, warehousing finished products.
The paper produced in aforementioned manners has higher deflection and preferable mechanical strength, quantitative 152.0g/m2Original Paper deflection is more than 2.56mNm, and tensile strength is more than 3.82KN/m, and burst index is more than 3.71kPam2/g.By once bottom The front coating process that face applies twice is applied, quantification of 193.0g/m can be obtained2Light basis weight art post paperboard, its tensile strength is more than 4.52KN/m, deflection are more than 4.90mNm, and interfacial bonding strength is more than 130J/m2, for folding strength more than 100 times, Cobb values are small In 26.4g/ ㎡.
Embodiment 5:
1) first, bleaching leaf wood reducing rules pulpboard, bleached sulphate softwood pulp pulpboard according to respectively according to 5:5、 6:4、7:3 and 8:2 proportioning adds the abundant size degradation of hydrabrusher;
2) secondly, the good slurry of size degradation is dehydrated and spare, the highly concentrated pulp storage tower that is transported to highly concentrated pulp storage tower by screw extrusion It is to ensure the stability of the continuity of production and product;
3) slurry of highly concentrated pulp storage tower then, is carried out defibrination, refining concentration 12% with helical feed to middle-density refiner (mass fraction), the beating degree after defibrination are 43 ° of SR, and the slurry after mill is sent into reserve pit after mill;
4) it is 0.6% to adjust slurry concentration, the wet strength agent PAE of the opposite starting bone dry fiber stock quality 1.2% of addition, 2.5% cationic starch, 0.6% help very agent, 0.18% sizing agent AKD, are uniformly mixed;
5) finally, Top wire former, dehydration, squeezing and drying on a papermaking machine, drying curve use 70-110-70 DEG C, into Paper mass dryness fraction 93.2% or so, obtains low grammes per square metre case paper body paper.
The body paper of gained is tested, it is as a result as shown in table 1 below.
1 different proportion of table bleaching leaf wood reducing rules are matched somebody with somebody with bleached sulphate softwood pulp copies properties
As shown in Table 1, the quality proportioning for bleaching leaf wood reducing rules pulpboard and bleached sulphate needlebush pulpboard is 7:3, That is bleaching leaf wood reducing rules pulpboard accounts for bleaching leaf wood reducing rules pulpboard and bleached sulphate needlebush pulpboard gross mass When 70%, preferable paper strength and deflection can be obtained.
It is special with light basis weight, high-stiffness and preferable mechanical strength etc. using the case paper body paper of the method for the present invention manufacture Point, body paper are quantitative in 150.8~152.8g/m2Between, deflection in 2.21~2.9mNm, tensile strength 3.63~ 3.83KN/m, burst index is in 3.3~3.80kPam2/g。

Claims (10)

  1. A kind of 1. production method of low grammes per square metre case paper body paper, it is characterised in that:Comprise the following steps:
    (1) size degradation after mixing bleaching leaf wood reducing rules pulpboard and bleached sulphate softwood pulp pulpboard, obtains slurry A;
    (2) slurry A be dehydrated simultaneously defibrination, obtain slurry B;
    (3) concentration for adjusting slurry B is 0.5~1.0%, obtains slurry C;Add slurry C mass fraction 2.25~6.15% Auxiliary agent, be uniformly mixed obtain slurry D;
    (4) Top wire former, dehydration, squeezing and drying are carried out successively using slurry D, obtain low grammes per square metre case paper body paper.
  2. A kind of 2. production method of low grammes per square metre case paper body paper according to claim 1, it is characterised in that:In step (1) It is 5 in mass ratio to bleach leaf wood reducing rules pulpboard and bleached sulphate softwood pulp pulpboard:5~8:2 mixing.
  3. A kind of 3. production method of low grammes per square metre case paper body paper according to claim 1, it is characterised in that:In step (2) It is 6%~15% to be dewatered to slurry concentration, and refining concentration is 6%~15%.
  4. A kind of 4. production method of low grammes per square metre case paper body paper according to claim 1, it is characterised in that:In step (2) The beating degree of slurry B is 40 ° of SR~45 ° SR.
  5. A kind of 5. production method of low grammes per square metre case paper body paper according to claim 1, it is characterised in that:In step (3) Auxiliary agent accounts for bleaching leaf wood reducing rules pulpboard and bleached sulphate softwood pulp pulpboard over dry gross mass 0.6 respectively including addition ~2.0% wet strength agent, 1.0~3.0% cationic starch, 0.5~0.9% help very agent and 0.15~0.25% Sizing agent.
  6. A kind of 6. production method of low grammes per square metre case paper body paper according to claim 5, it is characterised in that:Wet strength agent is PAE, sizing agent AKD.
  7. A kind of 7. production method of low grammes per square metre case paper body paper according to claim 1, it is characterised in that:In step (4) Top wire former is manufactured paper with pulp shaping using individual layer.
  8. A kind of 8. production method of low grammes per square metre case paper body paper according to claim 1, it is characterised in that:In step (4) The mass dryness fraction of low grammes per square metre case paper body paper is 92~94%.
  9. 9. the low grammes per square metre case paper body paper obtained using production method as claimed in claim 1.
  10. 10. application of the low grammes per square metre case paper body paper in light basis weight art post paperboard is prepared as claimed in claim 9.
CN201711207872.5A 2017-11-27 2017-11-27 Raw paper of carton paper with low gram weight and production method and application thereof Active CN107964825B (en)

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CN201711207872.5A CN107964825B (en) 2017-11-27 2017-11-27 Raw paper of carton paper with low gram weight and production method and application thereof

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CN108894042A (en) * 2018-07-17 2018-11-27 泾县汇鼎锋建筑装饰工程有限公司 A kind of modified optimization environment-friendly preparation method of publicity brochure paper
CN110952363A (en) * 2019-12-17 2020-04-03 华南理工大学 Method for realizing fiber devillicating
CN114606799A (en) * 2022-03-17 2022-06-10 浙江凯恩新材料有限公司 High-performance Japanese paper adhesive tape base paper, production method and Japanese paper adhesive tape adopting base paper

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CN108894042A (en) * 2018-07-17 2018-11-27 泾县汇鼎锋建筑装饰工程有限公司 A kind of modified optimization environment-friendly preparation method of publicity brochure paper
CN110952363A (en) * 2019-12-17 2020-04-03 华南理工大学 Method for realizing fiber devillicating
CN114606799A (en) * 2022-03-17 2022-06-10 浙江凯恩新材料有限公司 High-performance Japanese paper adhesive tape base paper, production method and Japanese paper adhesive tape adopting base paper
CN114606799B (en) * 2022-03-17 2023-07-04 浙江凯恩新材料有限公司 High-performance base paper of paper-mixing adhesive tape, production method and paper-mixing adhesive tape using base paper

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