CN110331612B - Method for manufacturing high-proportion chemical mechanical pulp sketch paper - Google Patents

Method for manufacturing high-proportion chemical mechanical pulp sketch paper Download PDF

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Publication number
CN110331612B
CN110331612B CN201910436219.9A CN201910436219A CN110331612B CN 110331612 B CN110331612 B CN 110331612B CN 201910436219 A CN201910436219 A CN 201910436219A CN 110331612 B CN110331612 B CN 110331612B
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pulp
controlled
paper
chemi
sketch
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CN110331612A (en
Inventor
刘春景
刘成良
朱宏伟
吴恒
周金涛
李丹
林本平
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Yueyang Paper Co ltd
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Yueyang Paper Co ltd
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    • 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
    • D21H11/02—Chemical or chemomechanical or chemothermomechanical pulp
    • 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/03—Non-macromolecular organic compounds
    • D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
    • D21H17/17—Ketenes, e.g. ketene dimers
    • 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
    • D21H17/24—Polysaccharides
    • D21H17/28—Starch
    • D21H17/29—Starch cationic
    • 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
    • D21H17/675—Oxides, hydroxides or carbonates
    • 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
    • D21H21/06—Paper forming aids
    • D21H21/10—Retention agents or drainage improvers

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

Abstract

The invention discloses a method for manufacturing high-proportion chemi-mechanical pulp sketch paper, which comprises the process steps of pulping bleached sulfate softwood pulp, mixing with chemi-mechanical pulp in proportion, adding auxiliary materials, papermaking with wet paper, squeezing and drying. The invention provides a manufacturing method of high-proportion machine pulp sketch paper, which improves the lead-applying rate of the sketch paper, has good lead-marking effect of a B4 pencil, solves the technical problem that fine and coarse grains on the sketch paper are damaged after an eraser wipes the sketch paper, enhances the scratch resistance of the sketch paper to the eraser, improves the competitiveness of enterprises, lays a foundation for long-term healthy development of the enterprises, and brings economic benefits.

Description

Method for manufacturing high-proportion chemical mechanical pulp sketch paper
Technical Field
The invention relates to the technical field of papermaking, in particular to a method for manufacturing high-proportion chemical mechanical pulp sketch paper.
Background
Sketch is the drawing form which is the earliest appeared in human history and is also the oldest artistic language, and simply speaking, sketch refers to drawing with a single color. In the renaming period of 15 th century literature, people only find the unique expression charm, in the period, the Italian painters Ma Sa dun, Da-Fengqi, Mikalang Kilo and the like invent and apply the principles of perspective, anatomy and composition, provide scientific basis for the stereoscopic impression and space sense of sketch expression, gradually improve sketch, and from then, the sketch is taken as a nearly perfect drawing form to draw a unique altar all over the world. The drawing paper is used for drawing art and is required to have a rough surface and a good lead-applying rate, i.e., a degree of lead-sticking of a B4 pencil line. The sketch paper on the market is mainly made by non-wood fiber papermaking enterprises with small scale, and some small papermaking enterprises face shutdown and imbalance of supply and demand relations with the high requirements of national environmental protection. With the continuous progress of high-yield pulp production technology, the chemi-mechanical pulp produced by using wood raw materials such as poplar, eucalyptus and the like can meet the quality requirement and the surface roughness requirement of paper, at present, the existing sketch paper has the problem of easy fluffing, fine and rough lines on the sketch paper are easy to damage after being wiped by an eraser, the line brush touch change of a user is greatly influenced, the sketch effect is not ideal, and lead is not easy to be fed when a plurality of professional painters or artists sketch, so that the drawing is not smooth, fine, vivid and unnatural.
Disclosure of Invention
The invention aims to solve the problems, provides a method for manufacturing high-proportion machine pulp sketch paper, improves the lead-applying rate of the sketch paper, has good lead-applying effect of a B4 pencil, solves the technical problem that fine and coarse grains on the sketch paper are damaged after an eraser wipes the sketch paper, enhances the scratch resistance of the sketch paper to the eraser, improves the competitiveness of enterprises, lays a foundation for long-term and healthy development of the enterprises, and brings economic benefits.
In order to realize the purpose, the invention adopts the technical scheme that: a method for manufacturing high-proportion chemi-mechanical pulp sketch paper comprises the process steps of mixing bleached sulfate softwood pulp with chemi-mechanical pulp in proportion, adding auxiliary materials, papermaking with wet paper, squeezing and drying, wherein:
A. pulping bleached sulfate softwood pulp, wherein the pulping concentration is controlled to be 2.5-3.5%, and the pulping beating degree is controlled to be 40 +/-2 DEG SR;
B. preparing bleached sulfate softwood pulp and chemi-mechanical pulp according to the mass percentage: 10-20% of bleached sulfate softwood pulp and 80-90% of chemi-mechanical pulp, wherein the concentration of the mixed pulp is controlled as follows: 2.0-4.0%;
C. adding auxiliary materials into a sizing system, wherein the dosage of the auxiliary materials to the oven-dried pulp is as follows in parts by weight: 0.5-1.0 part of AKD glue, 0.02-0.04 part of retention aid, 1.2-1.5 parts of cationic starch and 10-30 parts of light calcium carbonate, and preparing diluted slurry to be screened;
D. after the wet paper enters the pressing part for composite pressing, the wet paper is subjected to pre-drying treatment until the dryness is 93-97%, and then the paper is coiled.
Further, in step C, the forming mesh speed is controlled to be 130-150 m/min.
Further, in step C, the pulp-wire speed ratio is controlled to be 0.9-1.10.
Further, in step C, the concentration of the slurry from the head box to the forming wire is controlled to be 0.5-0.6%.
Further, in the step C, the opening degree of the lip of the headbox is controlled to be 12.7-13.0 mm.
Further, in step D, a pressing line pressure of the pressing section is controlled as follows: 10-20 kN/m, and the pressure of the two pressure lines is controlled as follows: 15-25 kN/m.
The invention has the beneficial effects that: the invention provides a manufacturing method of high-proportion machine pulp sketch paper, which improves the lead-applying rate of the sketch paper, has good lead-marking effect of a B4 pencil, solves the technical problem that fine and coarse grains on the sketch paper are damaged after an eraser wipes the sketch paper, enhances the scratch resistance of the sketch paper to the eraser, improves the competitiveness of enterprises, lays a foundation for long-term healthy development of the enterprises, and brings economic benefits.
1. According to the invention, the chemical-mechanical pulp with a high proportion is added to be matched with the bleached sulfate softwood pulp, the processed sketch paper has high bulk and rough surface, and meets the requirement of good lead-loading rate, the sketch drawing is smooth, fine, vivid and natural, the sketch paper is blackened by using a B4 pencil and then is wiped clean and continuous for three times, the surface of the paper does not fall hair, the lines are clear, the texture and the layering of the pencil drawing are suitable to be expressed, and the higher use requirement and the higher quality requirement of a professional painter or an artist on the sketch paper are met.
2. In the processing method, calendaring and surface sizing operations are not carried out, the ash content of the paper is reasonably controlled, the roughness of the paper is improved through the mutual cooperation of the cationic starch and the light calcium carbonate, the texture on the sketch paper is fine and rough, and the product quality is higher.
3. The invention strictly controls the technological parameters of auxiliary material dosage, net feeding concentration, pulp net speed ratio, pulp concentration, linear pressure and the like, and controls proper beating degree, thereby obtaining better paper evenness, cross width and fiber orientation, and ensuring that the paper strength and the scuff resistance meet the use requirements.
Detailed Description
The present invention is described in detail below with reference to specific embodiments for better understanding of technical solutions of the present invention, and the description of the present invention is only exemplary and explanatory and should not be construed as limiting the scope of the present invention in any way.
Quantitative index of sketch paper: 75 to 145g/m26.0-8.0% of water, 75-80% of ISO whiteness, more than or equal to 2.0km of longitudinal fracture length and more than or equal to 4.0 mN.m of transverse tearing index2(g) burst index of not less than 1.0 kPa.m2Water absorption of 20-30 g/m2The average smoothness value is 1-2 s, and the color is basically white.
Example 1: 75g sketch paper
A. Pulping bleached sulfate softwood pulp, wherein the pulping concentration is controlled to be 2.5%, and the pulping beating degree is controlled to be 38 DEG SR;
B. preparing bleached sulfate softwood pulp and chemi-mechanical pulp according to the mass percentage: 10% of bleached sulfate softwood pulp and 90% of chemi-mechanical pulp, and the concentration of the mixed pulp is controlled to be 2.0%;
C. adding auxiliary materials into a sizing system, wherein the dosage of the auxiliary materials to the oven-dried pulp is as follows in parts by weight: 0.5 part of AKD glue, 0.02 part of retention aid, 1.2 parts of cationic starch and 10 parts of light calcium carbonate, and preparing diluted slurry to be screened;
D. after the wet paper sheet enters the pressing part for composite pressing, the wet paper sheet is subjected to pre-drying treatment until the dryness of the wet paper sheet is 93%, and then the paper sheet is coiled.
Preferably, in step C, the forming wire speed is controlled to 150 m/min.
Preferably, in step C, the wire speed ratio is controlled to 0.9.
Preferably, in step C, the consistency of the stock from the headbox to the forming wire is controlled to be 0.5%.
Preferably, in step C, the headbox lip opening is controlled to be 12.7 mm.
Preferably, in step D, a pressing line pressure of the pressing section is controlled as follows: 10kN/m and the pressure of the two lines is controlled to be 15 kN/m.
The high-proportion chemical mechanical pulp sketch paper produced by the process has the main indexes that: quantitative determination of 75g/m2Moisture content 7.0%, whiteness 76%, longitudinal breaking length 3.5km, transverse tear index 5.0mN · m2(iv)/g, burst index 2.2kPa · m2Water absorption of 24g/m2The average smoothness value is 1.3s, the color is white, and the use requirement and the quality requirement of a customer on the product are completely met.
Example 2: 110g sketch paper
A. Pulping bleached sulfate softwood pulp, wherein the pulping concentration is controlled to be 2.5-3.5%, and the pulping beating degree is controlled to be 40-degree SR;
B. preparing bleached sulfate softwood pulp and chemi-mechanical pulp according to the mass percentage: 15% of bleached sulfate softwood pulp and 85% of chemi-mechanical pulp, and the concentration of the mixed pulp is controlled to be 3%;
C. adding auxiliary materials into a sizing system, wherein the dosage of the auxiliary materials to the oven-dried pulp is as follows in parts by weight: 0.8 part of AKD glue, 0.03 part of retention aid, 1.3 parts of cationic starch and 20 parts of light calcium carbonate, and preparing diluted slurry to be screened;
D. after the wet paper enters the pressing part for composite pressing, the wet paper is subjected to pre-drying treatment until the dryness is 95%, and then the paper is coiled.
Preferably, in step C, the forming wire speed is controlled to be 140 m/min.
Preferably, in step C, the wire speed ratio is controlled to be 1.020.
Preferably, in step C, the consistency of the stock from the headbox to the forming wire is controlled to be 0.55%.
Preferably, in step C, the headbox lip opening is controlled to be 12.8 mm.
Preferably, in step D, the first line pressing pressure of the pressing part is controlled to be 15kN/m, and the second line pressing pressure of the pressing part is controlled to be 20 kN/m.
The high-proportion chemical mechanical pulp sketch paper produced by the process has the main indexes that: quantitative determination of 110g/m2Moisture 7.2%, whiteness 77%, longitudinal breaking length 3.8km, transverse tearing index 5.6mN · m2(iv)/g, burst index 2.5kPa · m2Water absorption of 26g/m2The average smoothness value is 1.5s, the color is white, and the use requirement and the quality requirement of a customer on the product are completely met.
Example 3: 145g sketch paper
A. Pulping bleached sulfate softwood pulp, wherein the pulping concentration is controlled to be 3.5%, and the pulping beating degree is controlled to be 42 DEG SR;
B. preparing bleached sulfate softwood pulp and chemi-mechanical pulp according to the mass percentage: 20% of bleached sulfate softwood pulp and 80% of chemi-mechanical pulp, and the concentration of the mixed pulp is controlled to be 4.0%;
C. adding auxiliary materials into a sizing system, wherein the dosage of the auxiliary materials to the oven-dried pulp is as follows in parts by weight: 1.0 part of AKD glue, 0.04 part of retention aid, 1.5 parts of cationic starch and 30 parts of light calcium carbonate, and preparing diluted slurry to be screened;
D. after the wet paper sheet enters the pressing part for composite pressing, the wet paper sheet is subjected to pre-drying treatment until the dryness is 97%, and then the paper sheet is coiled.
Preferably, in step C, the forming wire speed is controlled to 130 m/min.
Preferably, in step C, the pulp wire speed ratio is 1.10.
Preferably, in step C, the consistency of the stock from the headbox to the forming wire is 0.6%.
Preferably, in step C, the opening of the lip of the headbox is 13.0 mm.
Preferably, in step D, the first line pressing pressure of the pressing part is controlled to be 20kN/m, and the second line pressing pressure of the pressing part is controlled to be 25 kN/m.
The high-proportion chemical mechanical pulp sketch paper produced by the process has the main indexes that: quantitative 145g/m2Moisture 7.1%, whiteness 78%, longitudinal breaking length 4.1km, transverse tearing index 5.8mN · m2(iv)/g, burst index 2.7kPa · m2Water absorption of 26g/m2The average smoothness value is 1.5s, the color is white, and the requirements of customers on the product are completely metApplication requirements and quality requirements.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present invention, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.

Claims (3)

1. A method for manufacturing high-proportion chemi-mechanical pulp sketch paper comprises the process steps of mixing bleached sulfate softwood pulp with chemi-mechanical pulp in proportion, adding auxiliary materials, papermaking with wet paper, squeezing and drying, and is characterized in that:
A. pulping bleached sulfate softwood pulp, wherein the pulping concentration is controlled to be 2.5-3.5%, and the pulping beating degree is controlled to be 40 +/-2 DEG SR;
B. preparing bleached sulfate softwood pulp and chemi-mechanical pulp according to the mass percentage: 10-20% of bleached sulfate softwood pulp and 80-90% of chemi-mechanical pulp, wherein the concentration of the mixed pulp is controlled as follows: 2.0-4.0%;
C. adding auxiliary materials into a sizing system, wherein the dosage of the auxiliary materials to the oven-dried pulp is as follows in parts by weight: 0.5-1.0 part of AKD glue, 0.02-0.04 part of retention aid, 1.2-1.5 parts of cationic starch and 10-30 parts of light calcium carbonate, preparing diluted slurry to be screened onto a net, controlling the concentration of the slurry from a head box to a forming net to be 0.5-0.6%, and controlling the opening of a lip plate of the head box to be 12.7-13.0 mm;
D. after the wet paper enters the pressing part for composite pressing, the wet paper is dried to reach the dryness of 93-97 percent and then is rolled, and the pressing line pressure of the pressing part is controlled as follows: 10-20 kN/m, and the pressure of the two pressure lines is controlled as follows: 15-25 kN/m.
2. The method as claimed in claim 1, wherein the forming wire speed is controlled to be 130-150m/min in step C.
3. The method for manufacturing high-proportion chemi-mechanical pulp sketch paper as claimed in claim 1, wherein in the step C, the pulp-to-wire speed ratio is controlled to be 0.9-1.10.
CN201910436219.9A 2019-05-23 2019-05-23 Method for manufacturing high-proportion chemical mechanical pulp sketch paper Active CN110331612B (en)

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CN110331612B true CN110331612B (en) 2020-09-11

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Publication number Priority date Publication date Assignee Title
CN101392473B (en) * 2008-10-15 2010-10-06 岳阳纸业股份有限公司 High bulk light paper and paper making technology thereof
CN106320056A (en) * 2016-08-26 2017-01-11 岳阳林纸股份有限公司 Engineering drawing paper and manufacturing method thereof
CN107059483A (en) * 2017-04-27 2017-08-18 浙江省普瑞科技有限公司 A kind of manufacture method of manual copperplate etching art paper
CN107345380B (en) * 2017-07-20 2020-03-24 岳阳林纸股份有限公司 Method for manufacturing literature and art paper

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