CN111379195A - Film transfer sizing method for oilproof paper - Google Patents
Film transfer sizing method for oilproof paper Download PDFInfo
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- CN111379195A CN111379195A CN202010257672.6A CN202010257672A CN111379195A CN 111379195 A CN111379195 A CN 111379195A CN 202010257672 A CN202010257672 A CN 202010257672A CN 111379195 A CN111379195 A CN 111379195A
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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
- 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
-
- 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
- D21H17/14—Carboxylic acids; Derivatives thereof
-
- 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
- D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/36—Polyalkenyalcohols; Polyalkenylethers; Polyalkenylesters
-
- 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
- D21H17/60—Waxes
-
- 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
- D21H17/64—Alkaline compounds
-
- 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
-
- 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
-
- 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
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paper (AREA)
Abstract
The invention provides a film transfer sizing method of oil-proof paper, which adopts a surface sizing agent with a brand new formula in a film transfer sizing process and optimizes and improves the control condition of a film transfer sizing machine. Specifically, the surface sizing agent is prepared by using stearic acid, paraffin, ammonia water and clear water to prepare an ammonium stearate paraffin glue solution, replacing part of an oil-proof agent, and preparing the ammonium stearate paraffin glue solution together with cationic surface tapioca starch, polyvinyl alcohol, an anionic oil-proof agent and clear water in a specific ratio. The invention not only improves the binding force of the oil-proof agent and the fiber and increases the oil-proof grade, but also enhances the frosting performance of the paper appearance and reduces the using amount of the oil-proof agent, thereby reducing the cost. On the basis, the control conditions of the film transfer sizing machine are improved, and the problem of overlarge difference of oil resistance grades of two sides of the oil-proof paper of the large cylinder machine can be solved by adjusting the types and the pressures of the metering rods of the upper beam and the lower beam.
Description
Technical Field
The invention relates to the technical field of production of oil-proof paper, in particular to a film transfer sizing method of oil-proof paper.
Background
At present, the production of domestic oil-proof paper generally adopts an immersion type sizing machine, and the sizing agent is oxidized starch and an oil-proof agent. The glue applying mode has the defects that the glue applying mode can not be applied to the production of oil-proof paper of a high-speed paper machine, the speed of the high-speed paper machine is high, the dryness of a paper sheet soaking type glue applicator is low, the requirement of high speed can not be met, and the glue applying mode is replaced by a film transfer glue applicator.
The film transfer sizing machine is used for coating and sizing by a metering rod, and has the advantages of suitability for high-concentration sizing agent, high dryness of finished paper, contribution to improving the speed of the vehicle, reducing paper breakage and reducing steam consumption. The defects are that the sizing agent is adhered to the fiber surface of paper, the bonding with the fiber is poor, and particularly for a paper machine form with a sizing machine behind a vat, the difference of the oil resistance grades of the front side and the back side of the paper is large, and the product quality is seriously influenced.
Disclosure of Invention
The invention aims to provide a film transfer sizing method of oilproof paper aiming at overcoming the technical defects of the prior art, and aims to solve the technical problem that the combination of a surface sizing agent and fibers is poor in the conventional film transfer sizing process.
The invention also aims to solve the technical problem of reducing the cost of the surface sizing agent on the premise of ensuring the oil resistance grade.
The invention also aims to solve the technical problem that the oil-proof grades on two sides of the oil-proof paper of the cylinder machine are too different.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
a film transfer sizing method of oil-proof paper comprises the following components in parts by weight: 100 parts of cationic surface tapioca starch, 8 parts of polyvinyl alcohol, 80 parts of anionic oil-proofing agent, 80 parts of ammonium stearate paraffin gel solution and 600 parts of water.
Preferably, the ammonium stearate paraffin glue comprises the following components in parts by weight: 100 parts of stearic acid, 100 parts of paraffin, 80 parts of 5% ammonia water and 880 parts of water.
Preferably, the ammonium stearate paraffin wax is prepared by the following method: mixing stearic acid, paraffin, 5% ammonia water and water according to the formula ratio, introducing steam, stirring, heating to 75 ℃, and continuously decocting for 90 min.
Preferably, the ammonium stearate paraffin wax solution is prepared by the following method: mixing stearic acid, paraffin, 5% ammonia water and water according to the formula amount, introducing steam, stirring, heating to 75 ℃, continuing decocting for 90min, and then adding warm water at 60 ℃ to dilute until the concentration is 10% to obtain the ammonium stearate paraffin glue solution.
Preferably, the surface sizing agent is prepared by the following method: mixing the cationic surface tapioca starch, polyvinyl alcohol, an anionic oil-proofing agent and water according to the formula amount, introducing steam, stirring, heating to 95 ℃, preserving heat for 20min, and mixing with the ammonium stearate paraffin glue solution according to the formula amount.
Preferably, the surface sizing agent solution is obtained by mixing the surface sizing agent solution with the ammonium stearate paraffin size solution according to the formula amount, and adding warm water at 60 ℃ to dilute the mixture to a concentration of 12%.
Preferably, the concentration of the surface sizing agent solution is 11.8-12.2%, the viscosity is 18-20mpa.s, the pH is 7-7.5, and the temperature is 65-70 ℃.
Preferably, in the method, the measuring rod model of the upper beam is V26 and the pressure is 18kPa, and the measuring rod model of the lower beam is V32 and the pressure is 16 kPa; the line pressure of the sizing machine is 25 kn/m; paper pickup amount of the surface sizing agent: single side is more than or equal to 2g/m2: the paper-forming dryness of the film-feeding transfer sizing machine is more than or equal to 90 percent, and the paper-forming dryness of the film-discharging transfer sizing machine is more than or equal to 70 percent.
The invention provides a film transfer sizing method of oil-proof paper, which adopts a surface sizing agent with a brand new formula in a film transfer sizing process and optimizes and improves the control condition of a film transfer sizing machine. Specifically, the surface sizing agent is prepared by using stearic acid, paraffin, ammonia water and clear water to prepare an ammonium stearate paraffin glue solution, replacing part of an oil-proof agent, and preparing the ammonium stearate paraffin glue solution together with cationic surface tapioca starch, polyvinyl alcohol, an anionic oil-proof agent and clear water in a specific ratio. The invention not only improves the binding force of the oil-proof agent and the fiber and increases the oil-proof grade, but also enhances the frosting performance of the paper appearance and reduces the using amount of the oil-proof agent, thereby reducing the cost. On the basis, the control conditions of the film transfer sizing machine are improved, and the problem of overlarge difference of oil resistance grades of two sides of the oil-proof paper of the large cylinder machine can be solved by adjusting the types and the pressures of the metering rods of the upper beam and the lower beam.
Compared with soaking type sizing, the invention has the following technical advantages:
1. the high-speed paper machine with the film transfer sizing machine is confirmed to be capable of producing qualified grease-proof paper, the paper dryness of the sizing machine is improved, paper breakage is reduced, the yield is improved, and the drying steam consumption is reduced.
2. According to the invention, the prepared ammonium stearate paraffin wax is used for replacing part of oil-proof agents, so that the cost of about 480 yuan per ton of paper can be reduced under the condition of ensuring the same oil-proof grade, and meanwhile, the oil-proof paper is endowed with frosting performance, so that the market demand is met.
3. The problem of poor oil resistance of the oil-proof paper of the cylinder machine on two sides can be solved by adjusting the types and the pressures of the metering rods of the upper beam and the lower beam of the film transfer sizing machine.
Drawings
FIG. 1 is a flow chart showing the preparation and use of the surface sizing agent of the present invention.
Detailed Description
Hereinafter, specific embodiments of the present invention will be described in detail. Well-known structures or functions may not be described in detail in the following embodiments in order to avoid unnecessarily obscuring the details. Approximating language, as used herein in the following examples, may be applied to identify quantitative representations that could permissibly vary in number without resulting in a change in the basic function. Unless defined otherwise, technical and scientific terms used in the following examples have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
Example 1
The technological process of the film transfer sizing method of the oilproof paper is shown in figure 1.
Firstly, the method adopts a novel surface sizing agent:
1. raw materials: cationic surface tapioca starch, polyvinyl alcohol, stearic acid, paraffin, 5% ammonia water and anionic oil-proofing agent.
2. The formula and preparation: 100kg of cationic surface tapioca starch, 8kg of polyvinyl alcohol, 10kg of anionic oil-proofing agent, 80kg of ammonium stearate paraffin glue solution and 600kg of clean water. Introducing steam into a surface sizing cooking pot, stirring, cooking to 95 ℃, preserving heat for 20min, and then adding 60 ℃ warm water into a dilution barrel to dilute to prepare a 12% surface sizing agent solution.
3. The novel surface sizing agent solution quality standard: concentration 12 + -0.2%, viscosity 18-20mpa.s, ph7-7.5 temperature 65-70 ℃.
4. The formula and preparation of ammonium stearate paraffin glue are as follows: 100kg of stearic acid, 100kg of paraffin, 80kg of 5% ammonia water and 880kg of clear water, introducing steam into a cooking pot, stirring to 75 ℃, continuing to decoct for 90min, adding warm water at 60 ℃ to dilute to 10% of concentration, preparing ammonium stearate paraffin glue solution, and filling the ammonium stearate paraffin glue solution into a surface glue dilution barrel according to the proportion shown in the formula for use.
Secondly, controlling parameters of a film transfer sizing machine:
1. measuring rod type and pressure
Upper beam V26, pressure 18 kpa; lower beam V32, pressure 16 kpa.
2. Line pressure of a sizing machine: 25 kn/m.
3. The paper pickup amount of the novel surface sizing agent is as follows: single side is more than or equal to 2g/m2。
4. The dryness of the paper fed into the film transfer sizing machine is more than or equal to 90 percent; the paper dryness of the film-discharging transfer sizing machine is more than or equal to 70 percent.
The embodiment adopts neotype surface sizing agent, through the organic combination of multiple chemicals, improves the cohesion of oil-proof agent and fibre, increases grease proofing grade, simultaneously, reinforcing paper outward appearance dull polish performance reduces the oil-proof agent quantity to reduce cost.
The technical scheme of the invention can also be replaced by a soaking type sizing machine, but is only suitable for a low-speed paper machine below 200m/min, and has lower yield and higher cost. Therefore, the process provided by the invention is a reasonable scheme at present when a film transfer sizing machine is used for ensuring the yield and the oil resistance grade of the oil-proof paper.
Example 2
A film transfer sizing method of oil-proof paper comprises the following components in parts by weight: 100 parts of cationic surface tapioca starch, 8 parts of polyvinyl alcohol, 80 parts of anionic oil-proofing agent, 80 parts of ammonium stearate paraffin gel solution and 600 parts of water.
Wherein the ammonium stearate paraffin glue comprises the following components in parts by weight: 100 parts of stearic acid, 100 parts of paraffin, 80 parts of 5% ammonia water and 880 parts of water.
The ammonium stearate paraffin glue is prepared by the following method: mixing stearic acid, paraffin, 5% ammonia water and water according to the formula ratio, introducing steam, stirring, heating to 75 ℃, and continuously decocting for 90 min.
The ammonium stearate paraffin gel solution is prepared by the following method: mixing stearic acid, paraffin, 5% ammonia water and water according to the formula amount, introducing steam, stirring, heating to 75 ℃, continuing decocting for 90min, and then adding warm water at 60 ℃ to dilute until the concentration is 10% to obtain the ammonium stearate paraffin glue solution.
The surface sizing agent is prepared by the following method: mixing the cationic surface tapioca starch, polyvinyl alcohol, an anionic oil-proofing agent and water according to the formula amount, introducing steam, stirring, heating to 95 ℃, preserving heat for 20min, and mixing with the ammonium stearate paraffin glue solution according to the formula amount.
And after mixing with the ammonium stearate paraffin wax solution according to the formula amount, adding warm water at 60 ℃ into the mixture to dilute the mixture to a concentration of 12% to obtain the surface sizing agent solution.
The concentration of the surface sizing agent solution is 11.8-12.2%, the viscosity is 18-20mpa.s, the pH is 7-7.5, and the temperature is 65-70 ℃.
In the method, the type of the measuring rod of the upper beam is V26 and the pressure is 18kPa, and the type of the measuring rod of the lower beam is V32 and the pressure is 16 kPa; the line pressure of the sizing machine is 25 kn/m; paper pickup amount of the surface sizing agent: single side is more than or equal to 2g/m2: the paper-forming dryness of the film-feeding transfer sizing machine is more than or equal to 90 percent, and the paper-forming dryness of the film-discharging transfer sizing machine is more than or equal to 70 percent.
The embodiments of the present invention have been described in detail, but the 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. Any modification, equivalent replacement, and improvement made within the scope of the application of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The method for sizing the oilproof paper by film transfer is characterized in that a surface sizing agent used in the method comprises the following components in parts by weight: 100 parts of cationic surface tapioca starch, 8 parts of polyvinyl alcohol, 80 parts of anionic oil-proofing agent, 80 parts of ammonium stearate paraffin gel solution and 600 parts of water.
2. The method for film transfer sizing of grease-proof paper according to claim 1, characterized in that the ammonium stearate paraffin glue comprises the following components in parts by weight: 100 parts of stearic acid, 100 parts of paraffin, 80 parts of 5% ammonia water and 880 parts of water.
3. The method of claim 2, wherein the ammonium stearate paraffin glue is prepared by the following method: mixing stearic acid, paraffin, 5% ammonia water and water according to the formula ratio, introducing steam, stirring, heating to 75 ℃, and continuously decocting for 90 min.
4. The method of film transfer sizing for grease barrier paper according to claim 2, wherein the ammonium stearate paraffine gum solution is prepared by: mixing stearic acid, paraffin, 5% ammonia water and water according to the formula amount, introducing steam, stirring, heating to 75 ℃, continuing decocting for 90min, and then adding warm water at 60 ℃ to dilute until the concentration is 10% to obtain the ammonium stearate paraffin glue solution.
5. The method of claim 4, wherein the surface sizing agent is prepared by: mixing the cationic surface tapioca starch, polyvinyl alcohol, an anionic oil-proofing agent and water according to the formula amount, introducing steam, stirring, heating to 95 ℃, preserving heat for 20min, and mixing with the ammonium stearate paraffin glue solution according to the formula amount.
6. The method for film transfer sizing of grease-proof paper according to claim 5, characterized in that after mixing with the formula amount of ammonium stearate paraffin glue solution, 60 ℃ warm water is added to dilute the mixture to a concentration of 12% to obtain the surface sizing agent solution.
7. The method for film transfer sizing of grease-proof paper according to claim 6, characterized in that the concentration of the surface sizing agent solution is 11.8-12.2%, the viscosity is 18-20mpa.s, the pH is 7-7.5, and the temperature is 65-70 ℃.
8. The method of claim 1, wherein in the method, the upper beam has a gauge bar type V26 at a pressure of 18kPa, and the lower beam has a gauge bar type V32 at a pressure of 16 kPa; the line pressure of the sizing machine is 25 kn/m; paper pickup amount of the surface sizing agent: single side is more than or equal to 2g/m2: the paper-forming dryness of the film-feeding transfer sizing machine is more than or equal to 90 percent, and the paper-forming dryness of the film-discharging transfer sizing machine is more than or equal to 70 percent.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113123164A (en) * | 2021-04-19 | 2021-07-16 | 深圳市宜科环保资源有限公司 | Fluorine-free oil-proof agent and preparation method and application thereof |
| CN114775329A (en) * | 2022-04-21 | 2022-07-22 | 山东仁丰特种材料股份有限公司 | Production process of automobile paint spraying shielding paper |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113123164A (en) * | 2021-04-19 | 2021-07-16 | 深圳市宜科环保资源有限公司 | Fluorine-free oil-proof agent and preparation method and application thereof |
| CN114775329A (en) * | 2022-04-21 | 2022-07-22 | 山东仁丰特种材料股份有限公司 | Production process of automobile paint spraying shielding paper |
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