CN112832055A - Method for improving printing opacity of paper - Google Patents
Method for improving printing opacity of paper Download PDFInfo
- Publication number
- CN112832055A CN112832055A CN201911162929.3A CN201911162929A CN112832055A CN 112832055 A CN112832055 A CN 112832055A CN 201911162929 A CN201911162929 A CN 201911162929A CN 112832055 A CN112832055 A CN 112832055A
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- CN
- China
- Prior art keywords
- paper
- improving
- printing
- opacity
- silicate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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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
- 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
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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
- 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
- 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
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
- D21H17/55—Polyamides; Polyaminoamides; Polyester-amides
-
- 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
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
- D21H17/56—Polyamines; Polyimines; Polyester-imides
-
- 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
- D21H17/68—Water-insoluble compounds, e.g. fillers, pigments siliceous, e.g. clays
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Paper (AREA)
Abstract
The invention discloses a method for improving printing opacity of paper, which uses functional filler to replace part of conventional filler to fill paper. The functional filler has better ink binder absorbability, so that ink particles are quickly fixed on the surface of paper, thereby improving the printing opacity of the paper and reducing the printing strike-through phenomenon of the paper.
Description
Technical Field
The present invention relates to a method for improving printing opacity of paper, and more particularly to a method for improving printing opacity of paper by promoting fixation of ink.
Background
Strike-through is the phenomenon that during printing, ink on the surface of the paper excessively penetrates into the interior of the paper and even penetrates through the paper to reach the back of the printed matter, resulting in back shadow or back smudge. When the printing ink enters the pores of the paper in the printing process, the capillary tubes in the paper absorb the connecting materials in the printing ink, if the pores among the fibers of the paper are too large, the ink absorption is too strong, or when the viscosity of the printing ink is low, the capillary tubes not only absorb the connecting materials, but also absorb the pigment, so that the printing ink permeates to the back of the paper, and the phenomenon of strike-through occurs.
The strike-through is a common problem of paper in the printing process, directly determines the quality of a printed finished product, is particularly important for paper needing double-sided printing, and is seriously troubled by the strike-through problem in many paper making enterprises producing low-basis-weight paper. If the phenomenon of strike-through occurs in the printing process, the thickness of the dried ink layer is influenced, so that the print is shriveled, the tinting strength of the ink is reduced, the saturation of the ink layer is reduced, the color concentration of the printed matter is obviously reduced, the hue of the printed matter is changed, and the correct expression of gray balance is influenced; the color and definition of the printed pictures and texts on the back surface of the paper can be influenced, and even more, the printed pictures and texts on the back surface of the paper can be chaotic, so that the major economic loss of printing waste products can be caused. In addition to the ink thickness, ink pigment composition, ink vehicle composition, and printing pressure involved in the printing process, strike-through is also related to the properties of the paper itself, such as sheet porosity, opacity, etc.
The prior commonly used method for improving the print show-through comprises the steps of improving the opacity of paper, reducing the printing pressure, carrying out surface treatment on the paper and the like, and the patent (application number CN200410052343.9) discloses a high-opacity carbonless copy paper and a production process thereof, which discloses that a layer of coating with higher opacity is coated on base paper, then carbonless paper coating is carried out, the opacity (more than 85 percent) of the carbonless copy paper is improved, and the print show-through is reduced. The patent (application No. CN201110215604.4) discloses a reactive emulsifier core-shell surface sizing agent and a preparation method thereof, and discloses a cultural paper surface sizing agent, and printing strike-through is greatly reduced after surface sizing. The patent (application No. CN200480005702.3) "offset newsprint" discloses offset newsprint using deinking pulp and calcium carbonate as raw materials, and improves strike-through phenomenon during offset printing.
Different from the above patent, the patent starts with improving the ink absorbability of the paper, and accelerates the absorption of the ink binder to fix the ink on the surface of the paper, so as to reduce the permeation amount of the ink into the paper, thereby improving the print strike-through of the paper.
Disclosure of Invention
The invention aims to provide a method for improving printing opacity of paper, which is to use functional filler to replace part of conventional filler to fill paper.
The functional filler is synthetic silicate.
The synthetic silicate is one or a mixture of magnesium aluminum silicate, aluminum silicate and calcium silicate.
The synthetic silicate has whiteness not less than 90% ISO and specific surface area not less than 90m2The oil absorption value is more than or equal to 150g/100g, the abrasion value is less than or equal to 6mg/2000 times, and the bulk density is less than or equal to 0.3g/m3。
The filling amount of the synthetic silicate is 1.0-5.0%.
Compared with the prior art, the functional synthetic silicate filler adopted by the invention has better ink binder absorbability, so that ink particles are quickly fixed on the surface of a paper sheet, the printing opacity of the paper sheet is improved, and the printing strike-through phenomenon of the paper sheet is reduced.
The present invention will be further described with reference to the following specific examples.
Example 1:
1) pulping 60% ONP and 40% OMP, and deinking to obtain deinked waste paper pulp (DIP);
2) adding 0.025% of cationic modified polyamine to the pulp obtained in 1);
3) adding 0.3% of cationic starch into the slurry obtained in the step 2;
4) adding 1.0% of dispersed synthetic silicate filler (instead of GCC) to the pulp obtained in 3);
5) adding 0.028% of cationic polyacrylamide into the slurry obtained in the step 4);
6) and 5) papermaking of the slurry obtained in the step 5) on a sheet machine to obtain the low-basis-weight newsprint A.
Example 2:
1) pulping 60% ONP and 40% OMP, and deinking to obtain deinked waste paper pulp (DIP);
2) adding 0.03% of cation modified polyamine to the pulp obtained in 1);
3) adding 0.4% of cationic starch into the slurry obtained in the step 2;
4) adding 4.0% of dispersed synthetic silicate filler (instead of GCC) to the pulp obtained in 3);
5) adding 0.03 percent of cationic polyacrylamide into the slurry obtained in the step 4);
6) and 5) papermaking of the slurry obtained in the step 5) on a sheet machine to obtain low-basis-weight newsprint B.
The results of measuring two patterns manufactured by paper of examples 1 and 2 are shown in Table 1. As can be seen from Table 1, the low basis weight newsprint produced using 100% deinked waste pulp (DIP) as the raw material and synthetic silicate as the filler has significantly better overall properties than the control.
TABLE 1 Low basis weight newsprint Properties
The above description is only exemplary of the present invention. It is obvious that the invention is not limited to the above embodiments, but that many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the invention.
Claims (5)
1. A method for improving printing opacity of paper is characterized in that functional filler is used for replacing part of conventional filler to carry out filling papermaking.
2. The method of claim 1, wherein the functional filler is a synthetic silicate.
3. The method for improving the opacity of printed paper as claimed in claim 2, wherein the synthetic silicate is one or more of magnesium aluminum silicate, aluminum silicate and calcium silicate.
4. The method for improving opacity of paper printing according to claim 2, wherein the synthetic silicate has whiteness not less than 90% ISO and specific surface area not less than 90m2G, oil absorption value is more than or equal to 150g/100g, abrasion valueNot more than 6mg/2000 times, and bulk density not more than 0.3g/m3。
5. The method of claim 1 wherein the synthetic silicate loading is from 1.0% to 5.0%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911162929.3A CN112832055A (en) | 2019-11-25 | 2019-11-25 | Method for improving printing opacity of paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911162929.3A CN112832055A (en) | 2019-11-25 | 2019-11-25 | Method for improving printing opacity of paper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112832055A true CN112832055A (en) | 2021-05-25 |
Family
ID=75922010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911162929.3A Pending CN112832055A (en) | 2019-11-25 | 2019-11-25 | Method for improving printing opacity of paper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112832055A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102912669A (en) * | 2012-11-06 | 2013-02-06 | 大唐国际发电股份有限公司 | Light offset paper filled with synthetic calcium silicate and manufacturing method thereof |
| CN104120621A (en) * | 2014-06-30 | 2014-10-29 | 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 | Application of calcium silicate as retention aiding intensifier in papermaking |
| CN107287980A (en) * | 2017-08-23 | 2017-10-24 | 内蒙古普诺思新材料科技有限公司 | Synthetic calcium silicate is used as the application of papermaking filler and the pulping method of high filler paper |
| CN108951267A (en) * | 2017-05-24 | 2018-12-07 | 中国制浆造纸研究院有限公司 | It is a kind of using Wheat Straw Pulp as the Light-weight printing paper of fibrous raw material and its manufacturing method |
-
2019
- 2019-11-25 CN CN201911162929.3A patent/CN112832055A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102912669A (en) * | 2012-11-06 | 2013-02-06 | 大唐国际发电股份有限公司 | Light offset paper filled with synthetic calcium silicate and manufacturing method thereof |
| CN104120621A (en) * | 2014-06-30 | 2014-10-29 | 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 | Application of calcium silicate as retention aiding intensifier in papermaking |
| CN108951267A (en) * | 2017-05-24 | 2018-12-07 | 中国制浆造纸研究院有限公司 | It is a kind of using Wheat Straw Pulp as the Light-weight printing paper of fibrous raw material and its manufacturing method |
| CN107287980A (en) * | 2017-08-23 | 2017-10-24 | 内蒙古普诺思新材料科技有限公司 | Synthetic calcium silicate is used as the application of papermaking filler and the pulping method of high filler paper |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210525 |
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| RJ01 | Rejection of invention patent application after publication |