CN111395038A - Cultural paper making process - Google Patents
Cultural paper making process Download PDFInfo
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- CN111395038A CN111395038A CN202010220822.6A CN202010220822A CN111395038A CN 111395038 A CN111395038 A CN 111395038A CN 202010220822 A CN202010220822 A CN 202010220822A CN 111395038 A CN111395038 A CN 111395038A
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- 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
-
- 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
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/14—Secondary fibres
-
- 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
- D21H15/00—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution
- D21H15/02—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution characterised by configuration
- D21H15/06—Long fibres, i.e. fibres exceeding the upper length limit of conventional paper-making fibres; Filaments
-
- 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
- D21H17/005—Microorganisms or enzymes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- 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
-
- 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
- D21H17/71—Mixtures of material ; Pulp or paper comprising several different materials not incorporated by special processes
- D21H17/72—Mixtures of material ; Pulp or paper comprising several different materials not incorporated by special processes of organic material
-
- 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
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
-
- 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
- D21H21/16—Sizing or water-repelling agents
Abstract
The invention belongs to the field of papermaking, and particularly relates to a cultural paper papermaking process. In order to solve the problem of high raw material cost of the cultural paper in the prior art, the application provides a novel cultural paper making process, and high-quality cultural paper is obtained by replacing short fiber pulp with poplar chemi-mechanical pulp and adjusting a surface sizing process.
Description
Technical Field
The invention belongs to the field of papermaking, and particularly relates to a cultural paper papermaking process.
Background
The commonly used papermaking raw materials in China include two main types of wood pulp and straw pulp. Because wood pulp resources are lacked in China and straw pulp resources are relatively rich, the papermaking raw materials in 20 th century in China mostly adopt annual straw pulp fiber raw materials, and the main flow process of the proportion of the cultural paper pulp in China before 2010 is 55-60% of straw pulp, 25-30% of wood pulp and 10-15% of broke pulp. Because the pollution of the straw pulp production is serious, the straw pulp production line is gradually eliminated in recent years, and the straw pulp is not added in the production of the cultural paper; the raw materials for making the current cultural paper are imported softwood pulp, imported hardwood pulp, domestic poplar chemi-mechanical pulp and broke. The technological proportion of most manufacturers is 25-30% of softwood pulp, 30-35% of hardwood pulp, 20-25% of poplar chemi-mechanical pulp and 10-15% of broke pulp. The culture paper produced by the pulp proportioning has general production quality and high production cost; the price of imported softwood pulp in the currently used pulp is the highest and the price of imported hardwood pulp is the next to that of imported hardwood pulp, the price of the raw material of the domestic poplar chemi-mechanical pulp is only about 60% of that of the raw material of the imported hardwood pulp for years, the proportion of the domestic poplar chemi-mechanical pulp in the production process is improved on the premise of ensuring the product quality, and the domestic poplar chemi-mechanical pulp has good economic value.
How to reduce the production cost and obtain high-quality culture paper is a technical problem which needs to be solved urgently.
The invention content is as follows:
in order to solve the problem of high raw material cost of the cultural paper in the prior art, the application provides a novel cultural paper making process, and high-quality cultural paper is obtained by replacing short fiber pulp with poplar chemi-mechanical pulp and adjusting a surface sizing process.
In order to achieve the purpose, the technical scheme adopted by the application is as follows:
the cultural paper making process consists of the following fiber components in parts by weight: 30-40 parts of long fiber, 45-50 parts of poplar chemi-mechanical pulp and 10-20 parts of damaged paper pulp.
Preferably, the cultural paper making process comprises the following fiber components in parts by weight: 35 parts of long fibers, 45 parts of poplar chemi-mechanical pulp and 15 parts of damaged paper pulp;
the cultural paper making process comprises the following specific steps:
1) taking long fiber wood pulp, poplar chemi-mechanical pulp and broke, concentrating the raw materials by using water for 3.5-5.0% through a hydraulic pulper, extracting the raw materials to a pulp beating front pool after defibering for 30min, beating the raw materials by using a disc mill, and then feeding the raw materials to a pulp beating back pool for later use;
2) the pulp is automatically mixed according to the proportion of 30-40 parts of long fiber, 45-50 parts of poplar chemi-mechanical pulp and 10-20 parts of damaged paper pulp for paper making.
In the paper making process, the surface gelatinization process comprises the following steps:
1) mixing starch and starch modifying enzyme with water;
2) heating the mixed solution obtained in the step 1) to 70 ℃, preserving heat for 20-30min, continuously heating to 95 ℃, and preserving heat for 15-30 min to obtain surface adhesive;
preferably, after the temperature is raised to 95 ℃, the temperature is kept for 20 min;
the mass ratio of the starch to the amylase is 900-1000: 9-10;
preferably, the mass ratio of the starch to the amylase is 1000: 9.5;
the mass ratio of the starch to the water in the step 1) is 1: 4;
the application method of the surface adhesive comprises the steps of adding water to reach the concentration of 12.5-13% before use, and extracting when the temperature of the adhesive liquid is reduced to 65-75 ℃.
Preferably, the surface glue is used by adding water to the concentration of 12.5% before use and extracting when the temperature of the glue solution is reduced to 70 ℃.
Because the fiber characteristics of the short fiber and the poplar chemi-mechanical pulp are different, the surface glue is properly changed and adjusted on the aspect of the surface glue process in order to ensure the product quality; the short fiber (commercial broad leaf pulp) is thinner, shorter, uniform and easy to disperse, while the poplar chemi-mechanical pulp is coarse, and the pasting process of surface glue is adjusted to improve the evenness and the surface strength of paper so as to improve the fiber bonding force and the surface property of the paper.
Drawings
FIG. 1 is a flow chart of a process for making cultural paper.
The specific implementation mode is as follows:
the cultural paper making process described in the examples was prepared according to the process flow shown in fig. 1.
Example 1
Taking long fiber wood pulp, poplar chemi-mechanical pulp and broke, concentrating the raw materials by using water for 3.5% through a hydraulic pulper, defibering for 30min, extracting the raw materials to a pulp beating front pool, pulping the raw materials by using a disc mill, and feeding the pulp into a pulp beating back pool for later use; the pulp is automatically mixed according to the proportion of 40 parts of long fiber, 50 parts of poplar chemi-mechanical pulp and 20 parts of damaged paper pulp for paper making.
In the paper making process, a surface sizing process is adopted, and the surface sizing pasting process comprises the following steps:
mixing starch, starch modified enzyme and water according to the mass ratio of 900:9.5: 4000; heating the mixed solution to 70 deg.C, maintaining the temperature for 20min, continuing heating to 95 deg.C, and maintaining the temperature for 15min to obtain surface glue;
before use, the surface glue is added with water to the concentration of 12.5%, and the glue solution is applied after the temperature is reduced to 70 ℃.
Example 2
Taking long fiber wood pulp, poplar chemi-mechanical pulp and broke, concentrating the raw materials by using water for a hydraulic pulper by 5.0 percent, defibering for 30min, extracting the raw materials to a pulp beating front pool, pulping the raw materials by using a disc mill, and feeding the pulp into a pulp beating back pool for later use; the pulp is automatically mixed according to the proportion of 30 parts of long fiber, 45 parts of poplar chemi-mechanical pulp and 10 parts of damaged paper pulp for paper making.
In the paper making process, a surface sizing process is adopted, and the surface sizing pasting process comprises the following steps:
mixing starch, starch modified enzyme and water according to the mass ratio of 1000:9.5: 4000; heating the mixed solution to 70 ℃, keeping the temperature for 30min, continuously heating to 95 ℃, and keeping the temperature for 30min to obtain surface glue;
before the surface glue is used, water is added until the concentration is 13%, and glue solution is applied after the temperature is reduced to 70 ℃.
Example 3
Taking long fiber wood pulp, poplar chemi-mechanical pulp and broke, concentrating the raw materials by using water for a hydraulic pulper for 4.0 percent, defibering for 30min, extracting the raw materials to a pulp beating front pool, pulping the raw materials by using a disc mill, and feeding the pulp into a pulp beating back pool for later use; the pulp is automatically prepared according to the proportion of 36 parts of long fiber, 47 parts of poplar chemimechanical pulp and 13 parts of damaged paper pulp for paper making.
In the paper making process, a surface sizing process is adopted, and the surface sizing pasting process comprises the following steps:
mixing starch, starch modified enzyme and water according to a mass ratio of 960:9.5: 4000; heating the mixed solution to 70 deg.C, maintaining the temperature for 26min, continuing heating to 95 deg.C, and maintaining the temperature for 17min to obtain surface glue;
before use, the surface glue is added with water to the concentration of 12.7%, and the glue solution is applied after the temperature is reduced to 70 ℃.
Example 4
Taking long fiber wood pulp, poplar chemi-mechanical pulp and broke, concentrating the raw materials by using water for a hydraulic pulper for 4.7 percent, defibering for 30min, extracting the raw materials to a pulp beating front pool, pulping the raw materials by using a disc mill, and feeding the pulp into a pulp beating back pool for later use; the pulp is automatically mixed according to the proportion of 35 parts of long fiber, 50 parts of poplar chemi-mechanical pulp and 15 parts of damaged paper pulp for paper making.
In the paper making process, a surface sizing process is adopted, and the surface sizing pasting process comprises the following steps:
mixing starch, starch modified enzyme and water according to the mass ratio of 1000:9.5: 4000; heating the mixed solution to 70 deg.C, maintaining the temperature for 20min, continuing heating to 95 deg.C, and maintaining the temperature for 15min to obtain surface glue;
before use, the surface glue is added with water to the concentration of 12.5%, and the glue solution is applied after the temperature is reduced to 65 ℃.
Example 5
Taking long fiber wood pulp, poplar chemi-mechanical pulp and broke, concentrating the raw materials by using water for a hydraulic pulper for 4.0 percent, defibering for 30min, extracting the raw materials to a pulp beating front pool, pulping the raw materials by using a disc mill, and feeding the pulp into a pulp beating back pool for later use; the pulp is automatically mixed according to the proportion of 30 parts of long fiber, 48 parts of poplar chemimechanical pulp and 15 parts of damaged paper pulp for paper making.
In the paper making process, a surface sizing process is adopted, and the surface sizing pasting process comprises the following steps:
mixing starch, starch modified enzyme and water according to the mass ratio of 950:9.5: 4000; heating the mixed solution to 70 deg.C, maintaining the temperature for 30min, continuing heating to 95 deg.C, and maintaining the temperature for 20min to obtain surface glue;
before the surface glue is used, water is added until the concentration is 13%, and the glue solution is applied after the temperature is reduced to 65 ℃.
Comparative example
The paper is manufactured by the proportion of 34 percent of long fibers, 26 percent of short fibers, 25 percent of poplar chemi-mechanical pulp and 15 percent of broke. The surface sizing glue solution is prepared according to the following process: 900kg of raw starch and 9kg of starch modified enzyme are mixed with water, then are heated, gelatinized and boiled, are kept warm for 10min when the temperature is raised to 70 ℃, are continuously heated to 95 ℃ by steam, are added with water before use, are concentrated to 11.0 percent, and are extracted when the temperature of glue solution is lowered to 70 ℃.
TABLE 1 data index for paper made in each example
| Item | Comparative example | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 |
| Smoothing positive s | 30 | 30 | 31 | 31 | 33 | 32 |
| Smooth inverse s | 30 | 30 | 30 | 30 | 32 | 31 |
| Thickness um | 95.8 | 95.5 | 95.9 | 95.8 | 97.9 | 97.3 |
| Fracture length Km | 4.75 | 4.81 | 4.85 | 4.78 | 5.05 | 4.95 |
| Degree of folding resistance | 15 | 15 | 15 | 16 | 16 | 15 |
| Tear Rate mN | 350 | 360 | 360 | 370 | 370 | 370 |
| Opacity% | 88.0 | 88.2 | 88.5 | 89.0 | 89.7 | 89.2 |
| Surface absorption g/m2 | 32.0 | 32.5 | 33.0 | 32.8 | 33.5 | 34.1 |
| Transverse expansion ratio% | 3.3 | 3.3 | 3.2 | 3.3 | 3.3 | 3.4 |
| Water content% | 5.5 | 5.5 | 5.3 | 5.6 | 5.6 | 5.6 |
| Ash content% | 29.2 | 28.9 | 29.0 | 29.3 | 28.9 | 29.5 |
And (3) comprehensive cost comparison:
| name (R) | Original cost | Cost of testing |
| Cost per ton paper | 2443.5 | 2399.0 |
And (3) analysis: after the proportion of the raw materials of the paper pulp is improved, the bulk and the opacity of the paper are obviously improved, the strength index meets the requirement, the production cost is reduced by 44.5 yuan/ton paper, and the benefit of 389.8 ten thousand yuan/year can be created.
Although the present invention has been described with reference to the specific embodiments, it is not intended to limit the scope of the present invention, and various modifications and variations can be made by those skilled in the art without inventive changes based on the technical solution of the present invention.
Claims (10)
1. The cultural paper making process is characterized by comprising the following fiber components in parts by weight: 30-40 parts of long fiber, 45-50 parts of poplar chemi-mechanical pulp and 10-20 parts of damaged paper pulp.
2. The cultural paper making process of claim 1, wherein the cultural paper making process comprises the following fiber components in parts by weight: 35 parts of long fibers, 45 parts of poplar chemi-mechanical pulp and 15 parts of damaged pulp.
3. The cultural paper making process of claim 1, which comprises the following steps:
1) taking long fiber wood pulp, poplar chemi-mechanical pulp and broke, concentrating the raw materials by using water for 3.5-5.0% through a hydraulic pulper, extracting the raw materials to a pulp beating front pool after defibering for 30min, beating the raw materials by using a disc mill, and then feeding the raw materials to a pulp beating back pool for later use;
2) the pulp is automatically mixed according to the proportion of 30-40 parts of long fiber, 45-50 parts of poplar chemi-mechanical pulp and 10-20 parts of damaged paper pulp for paper making.
4. The cultural paper making process of claim 3, wherein in the paper making process, the surface gelatinization process comprises the following steps:
1) mixing starch and starch modifying enzyme with water;
2) heating the mixed solution obtained in the step 1) to 70 ℃, preserving heat for 20-30min, continuously heating to 95 ℃, and preserving heat for 15-30 min to obtain the surface adhesive.
5. The cultural paper making process of claim 4, wherein the temperature is kept for 20min after the temperature is raised to 95 ℃ in the step 2).
6. The cultural paper making process of claim 4, wherein the mass ratio of starch to amylase in step 1) is 900-.
7. The cultural paper making process of claim 4, wherein the mass ratio of starch to amylase in step 1) is 1000: 9.5.
8. The cultural paper making process of claim 4, wherein the mass ratio of starch to water in step 1) is 1: 4.
9. The cultural paper making process of claim 4, wherein the surface glue is added with water to a concentration of 12.5-13% before use, and is extracted when the temperature of the glue solution is reduced to 65-75 ℃.
10. The cultural paper making process of claim 4, wherein the surface glue is used by adding water to a concentration of 12.5% before use and extracting when the glue solution temperature is reduced to 70 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010220822.6A CN111395038A (en) | 2020-03-26 | 2020-03-26 | Cultural paper making process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010220822.6A CN111395038A (en) | 2020-03-26 | 2020-03-26 | Cultural paper making process |
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| CN111395038A true CN111395038A (en) | 2020-07-10 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101851873A (en) * | 2010-06-23 | 2010-10-06 | 岳阳纸业股份有限公司 | Manufacturing method of environment-friendly copying paper |
| CN102926282A (en) * | 2012-10-23 | 2013-02-13 | 中冶纸业银河有限公司 | Light paper surface sizing method |
| CN102966006A (en) * | 2012-12-04 | 2013-03-13 | 濮阳龙丰纸业有限公司 | Preparation technology of light coated paper and coating coated on paper |
| CN103103872A (en) * | 2012-12-14 | 2013-05-15 | 中冶美利纸业股份有限公司 | Method for producing copy paper by high-proportion chemi-mechanical pulp |
| CN107345380A (en) * | 2017-07-20 | 2017-11-14 | 岳阳林纸股份有限公司 | A kind of manufacture method of literature and art book paper |
-
2020
- 2020-03-26 CN CN202010220822.6A patent/CN111395038A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101851873A (en) * | 2010-06-23 | 2010-10-06 | 岳阳纸业股份有限公司 | Manufacturing method of environment-friendly copying paper |
| CN102926282A (en) * | 2012-10-23 | 2013-02-13 | 中冶纸业银河有限公司 | Light paper surface sizing method |
| CN102966006A (en) * | 2012-12-04 | 2013-03-13 | 濮阳龙丰纸业有限公司 | Preparation technology of light coated paper and coating coated on paper |
| CN103103872A (en) * | 2012-12-14 | 2013-05-15 | 中冶美利纸业股份有限公司 | Method for producing copy paper by high-proportion chemi-mechanical pulp |
| CN107345380A (en) * | 2017-07-20 | 2017-11-14 | 岳阳林纸股份有限公司 | A kind of manufacture method of literature and art book paper |
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Application publication date: 20200710 |