CN114875715A - Paper sizing system with adjustable pH value of sizing agent and sizing process for printing white paper - Google Patents
Paper sizing system with adjustable pH value of sizing agent and sizing process for printing white paper Download PDFInfo
- Publication number
- CN114875715A CN114875715A CN202210497856.9A CN202210497856A CN114875715A CN 114875715 A CN114875715 A CN 114875715A CN 202210497856 A CN202210497856 A CN 202210497856A CN 114875715 A CN114875715 A CN 114875715A
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- China
- Prior art keywords
- glue
- tank
- sizing
- starch
- paper
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- 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
Links
- 238000004513 sizing Methods 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000008569 process Effects 0.000 title claims abstract description 14
- 239000003292 glue Substances 0.000 claims abstract description 104
- 238000003860 storage Methods 0.000 claims abstract description 14
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 11
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 113
- 229920002472 Starch Polymers 0.000 claims description 48
- 235000019698 starch Nutrition 0.000 claims description 48
- 239000008107 starch Substances 0.000 claims description 48
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 43
- 238000005086 pumping Methods 0.000 claims description 10
- 239000002002 slurry Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000004026 adhesive bonding Methods 0.000 claims description 3
- 238000003892 spreading Methods 0.000 claims 1
- 239000000243 solution Substances 0.000 abstract description 45
- 239000012670 alkaline solution Substances 0.000 abstract description 4
- 230000008859 change Effects 0.000 abstract description 2
- 239000003513 alkali Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 2
- 241000519995 Stachys sylvatica Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- 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
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/78—Controlling or regulating not limited to any particular process or apparatus
-
- 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
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/52—Addition to the formed paper by contacting paper with a device carrying the material
- D21H23/56—Rolls
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- Paper (AREA)
Abstract
The invention provides a paper sizing system capable of adjusting the pH value of a sizing agent, which comprises a dissolving tank, a pasting tank and a storage tank which are sequentially connected, and is also provided with a first glue tank, a second glue tank, an alkaline solution tank, a first sizing machine and a second sizing machine, wherein a stirrer is further arranged in the first glue tank, the first glue tank is connected with the alkaline solution tank, the first glue tank and the second glue tank are respectively connected with a discharge port of the storage tank, and the first glue tank and the second glue tank are respectively connected with the first sizing machine and the second sizing machine. The paper sizing system and the paper sizing process provided by the invention can change the pH value of the paper sizing solution, so that the printing ink is matched with the pH value of the surface of paper, and the paper inking is ensured.
Description
Technical Field
The invention relates to the technical field of paper manufacturing, in particular to a paper sizing system with an adjustable pH value of a sizing agent and a sizing process for printing white paper.
Background
Starch is often boiled into surface sizing liquid in the papermaking process, the starch is not washed cleanly or washed thoroughly in the processing process, and the starch contains partial acidic substances under the influence of microorganisms in the storage process, so that the starch presents certain acidity. The surface sizing itself is carried out in an acidic environment, and the acidity of the starch is uncertain and varies in a negligible manner.
The paper needs to be printed after glue is applied, the PH value of the printing ink adopted in the printing process is about 6, and the paper cannot be inked in some places during printing due to too large PH deviation between the paper surface and the printing ink, so that the paper is exposed.
Disclosure of Invention
Aiming at the defects of the prior art, the paper sizing system and the paper sizing process provided by the invention can change the pH value of the paper sizing solution, so that the printing ink is matched with the pH value of the surface of the sized paper, and the sized paper can be fully inked.
The technical scheme of the invention is realized as follows:
a paper sizing system capable of adjusting the PH value of a sizing agent comprises a dissolving tank, a pasting tank and a storage tank which are sequentially connected, and is further provided with a first glue tank, a second glue tank, a lye tank, a first sizing machine and a second sizing machine, wherein a stirrer and a PH value detector are arranged in the first glue tank, the first glue tank is connected with the lye tank through a conveying pipeline, and a control valve is arranged on the conveying pipeline; the bottom of the alkali liquor tank is provided with a pressure sensor and a control unit, the control unit is provided with a PH value detector, the control valve and the pressure sensors are electrically connected, the first glue tank and the second glue tank are respectively connected with the discharge port of the storage tank, and the first glue tank and the second glue tank are respectively connected with the first glue applicator and the second glue applicator.
Furthermore, a backflow channel is arranged in the first glue applicator and communicated with the first glue groove.
The sizing process for the printing white paper is also provided, the paper sizing device with the adjustable pH value of the sizing agent comprises the following steps: s1, adding starch and water into the dissolving tank to prepare starch slurry, pumping the starch slurry into the pasting tank, introducing steam into the pasting tank to paste the starch slurry into starch glue solution, pumping the starch glue solution into the storage tank, and pumping the starch glue solution in the storage tank into the first glue tank and the second glue tank respectively; and S2, detecting the pH value concentration of the starch glue solution in the first glue tank by the pH value detector, and calculating the quality of the caustic soda solution required by adjusting the pH value of the starch glue solution by the control unit. S3, providing caustic soda solution into the caustic soda solution tank, and calculating the quality of the caustic soda solution in the caustic soda solution tank through the pressure sensor by a computer; s4, opening the control valve by the control unit, pumping the caustic soda solution calculated in the step S2 into the first glue tank, and uniformly mixing the caustic soda solution by the stirrer in the first glue tank; and S5, respectively pumping the starch glue solution in the first glue groove and the second glue groove into the first sizing machine and the second sizing machine, and sizing the front side and the back side of the paper.
Further, the concentration of the caustic soda solution in step S2 is configured to be 30%.
Further, the starch glue solution on the first sizing machine (07) in the step S5 enters the first glue groove through the backflow channel.
Compared with the prior art, the invention has the following advantages.
According to the invention, the alkaline solution tank connected with the first glue tank is arranged, and the control valve is opened/closed by the control unit according to the pH value of the starch solution, so that a certain mass of caustic soda solution in the alkaline solution tank is added into the first glue tank, and the automatic adjustment of the pH value of the starch solution is realized, thus the pH value is matched with the pH value of the printing ink, and the paper subjected to surface sizing by using the starch solution can not generate white spots during printing.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a pH adjustable paper sizing system for sizing agents according to the present invention;
the attached drawings are as follows: 01. a dissolving tank; 02. pasting a tank; 03. a storage tank; 04; a first glue tank; 41. a stirrer; 05. a second glue groove; 06. a lye tank; 07. a first sizing machine; 71. a return line; 08. and a second sizing machine.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
Referring to fig. 1, the embodiment of the invention discloses a paper sizing system with an adjustable PH value of a sizing agent, which comprises a dissolving tank 01, a pasting tank 02 and a storage tank 03 which are connected in sequence, and further comprises a first glue tank 04, a second glue tank 05, a lye tank 06, a first sizing machine 07 and a second sizing machine 08.
Specifically, a stirrer 41 and a pH value detector are arranged in the first glue tank 04, the first glue tank 04 is connected with the lye tank 06 through a conveying pipeline, and a control valve is arranged on the conveying pipeline; control valve is normally closed, lye tank 06 bottom is equipped with pressure sensor, still be equipped with the control unit, the pH value detector, electric connection between control valve and the pressure sensor, the control unit can be arranged in receiving the information of starch solution pH value in first glue groove 04, and calculate and adjust this pH value to 5 ~ 5.5 between required lye quantity, be connected through pressure sensor and control valve and control unit, can master the quality of lye in lye tank 06 in real time, also can carry certain quality lye to get into first glue groove 04 through opening/closing control valve, the adjustment of starch solution pH value automatic, intelligence has been realized, make the starch solution pH value that is used for paper glueing match with printing ink, the printing effect is better, the product quality has been improved, produce the printing and do not reveal white paper.
Specifically, first gluey groove 04 and second gluey groove 05 link to each other with the discharge gate of holding vessel 03 respectively, and first gluey groove 04 and second gluey groove 05 link to each other with first size press 07 and second size press 08 respectively, and first size press 07 and second size press 08 are used for gluing to the front of paper, reverse side respectively, because only the front of paper just can print, consequently as long as adjust the pH value of front size press, can reduce the use amount of alkali lye, reduce paper manufacturing cost.
Further, a return passage 71 is provided in the first glue applicator 07, and the return passage 71 communicates with the first glue groove 04. The starch glue solution of the sizing machine can keep a certain backflow amount so as to enable the sizing to be uniform, and the backflow starch glue solution flows back to the first glue groove 04 so as to save the alkali consumption.
The invention also provides a sizing process for printing white paper, which comprises the paper sizing system capable of adjusting the pH value of the sizing agent, and comprises the following steps:
a worker adds starch and water into a dissolving tank 01 and stirs the starch and the water to prepare starch slurry, the starch slurry is pumped into a pasting tank 02, steam is introduced into the pasting tank 02 to be pasted into starch glue solution, the starch glue solution is pumped into a storage tank 03, and the starch glue solution in the storage tank 03 is respectively pumped into a first glue tank 04 and a second glue tank 05.
A PH value detector detects the PH value concentration of the starch glue solution in the first glue groove 04, and a control unit calculates the quality of caustic soda solution required for adjusting the PH value of the starch glue solution; because the concentration of the caustic soda solution provided each time is the same, the control unit can calculate the caustic soda solution dosage required for adjusting the pH value of the starch glue solution to 5-5.5 according to the program.
The working personnel add the caustic soda solution prepared in advance into the caustic soda tank 06, and the control unit calculates the quality of the caustic soda solution in the caustic soda tank 06 through the pressure sensor, preferably, the concentration of the caustic soda solution added into the caustic soda tank 06 is configured to be 30%. In addition, the control unit can calculate the usage amount of the caustic soda solution in real time according to the reduced pressure.
The control unit opens/closes the control valve, pumps the caustic soda solution calculated in the step S2 into the first glue tank 04, and uniformly mixes the caustic soda solution with the stirrer 41 in the first glue tank 04;
and pumping the starch glue solution in the first glue tank 04 and the second glue tank 05 into a first glue applicator 07 and a second glue applicator 08 respectively to apply glue to the front side and the back side of the paper, preferably, the starch glue solution on the first glue applicator 07 enters the first glue tank 04 through a return channel 71 so as to save the alkali dosage for adjusting the PH.
The invention has the beneficial effects that: the PH value of the paper sizing liquid is automatically adjusted, so that the PH value of the starch sizing liquid for sizing is matched with the PH value of the printing ink, paper with the exposed white points of 0/m 2 (originally at least 10/m 2) can be produced, the quality of finished paper is better, the production efficiency is improved, consumption is correspondingly saved, and the cost is lower.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. The utility model provides a paper glueing system of adjustable sizing agent pH value, includes consecutive dissolving tank (01), gelatinization groove (02) and holding vessel (03), its characterized in that: the glue spreading machine is also provided with a first glue groove (04), a second glue groove (05), a lye tank (06), a first glue applicator (07) and a second glue applicator (08);
a stirrer (41) and a PH value detector are arranged in the first glue tank (04), the first glue tank (04) is connected with the lye tank (06) through a conveying pipeline, and a control valve is arranged on the conveying pipeline; the bottom of the lye tank (06) is provided with a pressure sensor;
the PH value detector is connected with the control valve, and the pressure sensor is connected with the control valve.
The first glue groove (04) and the second glue groove (05) are respectively connected with the discharge hole of the storage tank (03), and the first glue groove (04) and the second glue groove (05) are respectively connected with the first glue applicator (07) and the second glue applicator (08).
2. Paper sizing system with adjustable PH of sizing agents according to claim 1, characterized in that a return channel (71) is provided in the first size press (07), said return channel (71) being in communication with the first glue reservoir (04).
3. A process for sizing printed white paper comprising the adjustable sizing agent PH paper sizing apparatus of claim 2, comprising the steps of:
s1, adding starch and water into the dissolving tank (01) to prepare starch slurry, pumping the starch slurry into the pasting tank (02), introducing steam into the pasting tank (02) to paste the starch slurry into starch glue solution, pumping the starch glue solution into the storage tank (03), and pumping the starch glue solution in the storage tank (03) into the first glue tank (04) and the second glue tank (05) respectively;
s2, detecting the pH value concentration of the starch glue solution in the first glue tank (04) by the pH value detector, and calculating the quality of the caustic soda solution required by the adjustment of the pH value of the starch glue solution by the control unit.
S3, providing caustic soda solution into the lye tank (06), and calculating the quality of the caustic soda solution in the lye tank (06) by the control unit through the pressure sensor;
s4, the control unit opens the control valve, pumps the caustic soda solution calculated in the step S2 into the first glue tank (04), and uniformly mixes the caustic soda solution with the stirrer (41) in the first glue tank (04);
s5, respectively pumping starch glue solutions in the first glue groove (04) and the second glue groove (05) into the first glue applicator (07) and the second glue applicator (08), and applying glue to the front side and the back side of the paper.
4. The process for sizing print-on white paper according to claim 3, characterized in that: the caustic soda solution concentration in step S2 was set to 30%.
5. The process for sizing print-on white paper according to claim 3, characterized in that: in step S5, the starch glue solution on the first glue applicator (07) enters the first glue tank (04) through the return channel (71).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210497856.9A CN114875715A (en) | 2022-05-06 | 2022-05-06 | Paper sizing system with adjustable pH value of sizing agent and sizing process for printing white paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210497856.9A CN114875715A (en) | 2022-05-06 | 2022-05-06 | Paper sizing system with adjustable pH value of sizing agent and sizing process for printing white paper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114875715A true CN114875715A (en) | 2022-08-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210497856.9A Pending CN114875715A (en) | 2022-05-06 | 2022-05-06 | Paper sizing system with adjustable pH value of sizing agent and sizing process for printing white paper |
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| Country | Link |
|---|---|
| CN (1) | CN114875715A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202989679U (en) * | 2012-11-01 | 2013-06-12 | 福建希源纸业有限公司 | Paper sheet surface sizing agent adding device |
| CN205188708U (en) * | 2015-11-16 | 2016-04-27 | 重庆理文造纸有限公司 | Improve table system that glues of paper intensity |
| CN206873206U (en) * | 2017-07-10 | 2018-01-12 | 玖龙纸业（太仓）有限公司 | A kind of plasm-glue-blending system |
| CN208395082U (en) * | 2018-05-29 | 2019-01-18 | 玖龙纸业（东莞）有限公司 | A kind of preparation system of paper grade (stock) gelatinized starch |
| CN113087810A (en) * | 2021-05-11 | 2021-07-09 | 玖龙纸业（太仓）有限公司 | Starch preparation system for papermaking |
| CN113355941A (en) * | 2021-06-29 | 2021-09-07 | 东莞金洲纸业有限公司 | Automatic control process for dissolving and boiling glue of starch for papermaking |
-
2022
- 2022-05-06 CN CN202210497856.9A patent/CN114875715A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202989679U (en) * | 2012-11-01 | 2013-06-12 | 福建希源纸业有限公司 | Paper sheet surface sizing agent adding device |
| CN205188708U (en) * | 2015-11-16 | 2016-04-27 | 重庆理文造纸有限公司 | Improve table system that glues of paper intensity |
| CN206873206U (en) * | 2017-07-10 | 2018-01-12 | 玖龙纸业（太仓）有限公司 | A kind of plasm-glue-blending system |
| CN208395082U (en) * | 2018-05-29 | 2019-01-18 | 玖龙纸业（东莞）有限公司 | A kind of preparation system of paper grade (stock) gelatinized starch |
| CN113087810A (en) * | 2021-05-11 | 2021-07-09 | 玖龙纸业（太仓）有限公司 | Starch preparation system for papermaking |
| CN113355941A (en) * | 2021-06-29 | 2021-09-07 | 东莞金洲纸业有限公司 | Automatic control process for dissolving and boiling glue of starch for papermaking |
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Application publication date: 20220809 |