CN111206455A - Coating paint and preparation method thereof - Google Patents
Coating paint and preparation method thereof Download PDFInfo
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- CN111206455A CN111206455A CN202010038107.0A CN202010038107A CN111206455A CN 111206455 A CN111206455 A CN 111206455A CN 202010038107 A CN202010038107 A CN 202010038107A CN 111206455 A CN111206455 A CN 111206455A
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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
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/38—Coatings with pigments characterised by the pigments
- D21H19/385—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
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/38—Coatings with pigments characterised by the pigments
- D21H19/40—Coatings with pigments characterised by the pigments siliceous, e.g. clays
-
- 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
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
-
- 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
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/54—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
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/56—Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H19/60—Polyalkenylalcohols; 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
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/62—Macromolecular organic compounds or oligomers thereof obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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 provides a coating paint and a preparation method thereof, and the coating paint comprises the following components in parts by weight: 400 parts of water 285-. By coating the coating paint on paper, the problems of large surface roughness and poor anti-blooming performance of the existing coated paper can be improved.
Description
Technical Field
The invention relates to the technical field of papermaking, in particular to a coating and a preparation method thereof.
Background
The coated paper is formed by coating a coating material containing a pigment as a main component on at least one surface of a base paper and then drying the coating material. The coated paper can be used as commercial printed matters such as posters, brochures, advertising paintings and the like after being printed in multiple colors or in single color, or as publications such as books, magazines and the like, and is widely applied to daily work and life.
The properties of the coating directly affect the coated paper properties. When the conventional common coating is applied to the production of coated paper, the coating operation has poor operability and the coating amount is relatively low. The low coating amount cannot provide good surface performance, and the obtained coated paper has the problems of large surface roughness, poor anti-blooming performance and the like.
Disclosure of Invention
The invention aims to solve the technical problems that the coated paper produced by the existing coating has larger surface roughness and poor anti-blooming performance.
In order to solve the technical problems, the invention provides a coating paint which comprises the following components in parts by weight: 400 parts of water 285-; the concentration of the pigment is 65-80%, the concentration of the polyvinyl alcohol is 15-25%, and the concentration of the water resistant agent is 50-55%.
Further, the pigment includes calcium carbonate or talc or china clay.
Further, the pigment particle size ranges from 55 to 65 microns.
Further, the water-resistant chemicals include: organic phosphine scale and corrosion inhibitor or polyamide polyurea high molecular oligomer.
Further, the coating paint has a solid content of 30-32% and a viscosity of 75-115 mpa.s.
The preparation method of the coating comprises the steps of obtaining 400 parts of 285-400 parts of water, 120 parts of starch, 10-50 parts of pigment, 1-8 parts of polyvinyl alcohol, 1-5 parts of waterproof agent and 1-3 parts of lubricant by weight, and stirring the materials at 45-47 ℃ for 5-6 minutes; the concentration of the pigment is 65-80%, the concentration of the polyvinyl alcohol is 15-25%, and the concentration of the water resistant agent is 50-55%.
Further, the pigment includes calcium carbonate or talc or china clay.
Further, the pigment particle size ranges from 55 to 65 microns.
Further, the water-resistant chemicals include: organic phosphine scale and corrosion inhibitor or polyamide polyurea high molecular oligomer.
Further, the prepared coating paint has a solid content of 30-32% and a viscosity of 75-115 mpa.s.
The coating paint provided by the invention comprises the following components in parts by weight: 400 parts of water 285-. By coating the coating paint on paper, the problems of large surface roughness and poor anti-blooming performance of the existing coated paper can be improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic flow chart of the method of experimental group one of the present invention;
FIG. 2 is a schematic flow chart of the method of experimental group two of the present invention;
FIG. 3 is a schematic flow chart of the method of experiment group three of the present invention;
FIG. 4 is a flow chart of the method of the first control group of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be noted that the following examples are only illustrative of the present invention, and do not limit the scope of the present invention. Likewise, the following examples are only some but not all examples of the present invention, and all other examples obtained by those skilled in the art without any inventive step are within the scope of the present invention.
The terms "first", "second" and "third" in the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. All directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are only used to explain the relative positional relationship between the components, the movement, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly. The terms "comprising" and "having" and any variations thereof in the embodiments of the present application are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or may alternatively include other steps or elements inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
The coating paint comprises the following components in parts by weight: 400 parts of water 285-; the concentration of the pigment is 65-80%, the concentration of the polyvinyl alcohol is 15-25%, and the concentration of the water resistant agent is 50-55%. Wherein the pigment is calcium carbonate with a particle size of 55-65 microns or talcum powder or porcelain clay, the pigment with a smaller particle size is used for improving the roughness of the coated paper, and the starch has the same effect as the pigment and not only can increase the viscosity but also can improve the roughness of the coated paper. The polyvinyl alcohol is added to improve the binding force between the pigment and the base paper fiber, reduce the possibility of the pigment falling off when the coated paper is cut, smooth the coated paper, improve the film forming property of the starch and improve the smoothness of the starch. In this embodiment, the water resistance agent is an organic phosphine scale and corrosion inhibitor or a polyamide polyurea high molecular oligomer, and the water resistance agent is used for enhancing the water resistance of the coated paper. In this embodiment, a certain amount of lubricant may be added to make the coated paper have high overall smoothness. The coating paint prepared by the components has the solid content of 30-32% and the viscosity of 75-115 mpa.s. The prepared coating paint is uniformly coated on the base paper, so that the problems of larger surface roughness and poor anti-blooming performance of the existing coated paper can be solved.
Experiment group one: please refer to fig. 1, which is a flow chart of the method of the first experimental group of the present invention.
Step S01, 285 parts of water, 100 parts of starch, 10 parts of pigment, 1 part of polyvinyl alcohol, 1 part of water resistant agent and 1 part of lubricant are obtained according to parts by weight.
In step S02, the above material was stirred at 45 ℃ for 5 minutes.
The components are stirred for 5 minutes to be uniform, and then the coating paint is prepared. Wherein the concentration of the pigment is 65%, the concentration of the polyvinyl alcohol is 15%, and the concentration of the water resistance agent is 50%. In this embodiment the pigment is calcium carbonate having a particle size of 55 microns, and in other embodiments the pigment may be talc or china clay. The waterproof agent is an organic phosphine scale and corrosion inhibitor.
Then, the prepared coating paint was applied to the base paper using a coating blade to form a coating layer, thereby obtaining a coated paper.
In this embodiment, the paper-making coating can be applied by a large high-speed paper machine (speed of 1000 meters per minute or more). The coating paint used in the first experimental group was applied by a steel knife with a knife angle of 38 degrees and a knife pressure of 0.31 mpa. After the base paper is coated, the roughness of the collected coated paper is 3.5um, the number of broken points of the coating layer is 2, and the anti-blooming performance is good. The paint was collected at 30.5% solids and 76mpa.s viscosity. The data of the coated paper and the data of the coating paint are recorded to form table one.
Watch 1
Experiment group two: refer to FIG. 2, which is a flow chart of the method of experiment group two of the present invention
Step S03, 340 parts of water, 110 parts of starch, 30 parts of pigment, 4 parts of polyvinyl alcohol, 3 parts of water resisting agent and 2 parts of lubricant are obtained according to parts by weight.
Step S04, the above materials are stirred at 46 ℃ for 5.5 minutes
The materials were stirred for 5.5 minutes to obtain a uniform coating. Wherein the concentration of the pigment is 72%, the concentration of the polyvinyl alcohol is 20%, and the concentration of the water-resistant agent is 53%. In this embodiment the pigment is calcium carbonate having a particle size of 60 microns, and in other embodiments the pigment may be talc or china clay. The waterproof agent is an organic phosphine scale and corrosion inhibitor.
Then, the prepared coating paint was applied to the base paper using a coating blade to form a coating layer, thereby obtaining a coated paper.
In this embodiment, the paper-making coating can be applied by a large high-speed paper machine (speed of 1000 meters per minute or more). The coating paint used in the first experimental group was applied by a steel knife with a knife angle of 38 degrees and a knife pressure of 0.31 mpa. After the base paper is coated, the roughness of the collected coated paper is 4um, the number of broken points of the coating layer is 2.3, and the anti-blooming performance is good. The collected coating had a solids content of 30.8% and a viscosity of 80 mpa.s. The data of the coated paper and the data of the coating paint were recorded to prepare table two.
Watch two
Experiment group three: please refer to fig. 3, which is a flow chart of the third experimental group of the present invention
Step S05, 400 parts of water, 120 parts of starch, 50 parts of pigment, 8 parts of polyvinyl alcohol, 5 parts of water resisting agent and 3 parts of lubricant are obtained according to parts by weight.
In step S06, the above material was stirred at 47 ℃ for 6 minutes.
The materials are stirred for 6 minutes to be uniform, and then the coating paint is prepared. Wherein the concentration of the pigment is 80%, the concentration of the polyvinyl alcohol is 25%, and the concentration of the water resistance agent is 55%. In this embodiment the pigment is calcium carbonate having a particle size of 65 microns, and in other embodiments the pigment may be talc or china clay. The waterproof agent is an organic phosphine scale and corrosion inhibitor.
Then, the prepared coating paint was applied to the base paper using a coating blade to form a coating layer, thereby obtaining a coated paper.
In this embodiment, the paper-making coating can be applied by a large high-speed paper machine (speed of 1000 meters per minute or more). The coating paint used in the first experimental group was applied by a steel knife with a knife angle of 38 degrees and a knife pressure of 0.31 mpa. After the base paper is coated, the roughness of the collected coated paper is 4.8um, the number of broken points of the coating layer is 3, and the anti-blooming performance is good. The paint was collected at 32% solids and 110mpa.s viscosity. The data of the coated paper and the data of the coating paint are recorded to prepare a table III.
Watch III
Control group one: please refer to fig. 4, which is a flowchart illustrating a method of the first control group according to the present invention.
Step S07, 250 parts of water, 130 parts of starch, 15 parts of pigment, 15 parts of polyvinyl alcohol, 8 parts of water resisting agent and 5 parts of lubricant are obtained according to parts by weight.
In step S08, the above material was stirred at 45 ℃ for 5 minutes.
The materials are stirred for 5 minutes to be uniform, and then the coating paint is prepared. Wherein the concentration of the pigment is 65%, the concentration of the polyvinyl alcohol is 15%, and the concentration of the water resistance agent is 50%. In this embodiment the pigment is calcium carbonate having a particle size of 55 microns, and in other embodiments the pigment may be talc or china clay. The waterproof agent is an organic phosphine scale and corrosion inhibitor.
Then, the prepared coating paint was applied to the base paper using a coating blade to form a coating layer, thereby obtaining a coated paper.
In this embodiment, the paper-making coating can be applied by a large high-speed paper machine (speed of 1000 meters per minute or more). The coating paint used in the first experimental group was applied by a steel knife with a knife angle of 38 degrees and a knife pressure of 0.31 mpa. After the base paper is coated, the roughness of the collected coated paper is 6.5um, the number of broken points of the coating layer is 4, and the anti-blooming performance is common. The paint was collected at 37% solids and 105mpa.s viscosity. Data on the coated paper and data on the coating paint were recorded to form table four.
Watch four
And collecting the data of the coated paper and the data of the coating paint of the experimental group I, the experimental group II, the experimental group III and the control group I to prepare a table V, and comparing. The experiments of the experimental group I, the experimental group II, the experimental group III and the control group I all adopt steel knives, the knife angle is controlled to be 38 degrees, and the knife pressure is controlled to be 0.31 MPa. The rotation speed of the paper machine was set at 1000 meters per minute. To verify the effect on the properties of the coating, and the properties of the coated paper coated with the coating, when the composition of the coating was changed.
Watch five
As can be seen from the above data, the coating paint prepared by using 285 parts by weight of water, 100 parts by weight of starch, 10 parts by weight of pigment, 1 part by weight of polyvinyl alcohol, 1 part by weight of water resistant additive and 1 part by weight of lubricant in the first experimental group was used, and the roughness of the coated paper using the coating paint of the first experimental group was the lowest and the number of broken points of the coating layer was the lowest among the three experimental groups. And the solid content and the viscosity of the coating of the experimental group I are also lower, and the lower viscosity is beneficial to the uniform coating of the coating. The first control group is a coating prepared from 250 parts by weight of water, 130 parts by weight of starch, 15 parts by weight of pigment, 15 parts by weight of polyvinyl alcohol, 8 parts by weight of water resisting agent and 5 parts by weight of lubricant, the roughness of the coated paper coated by the first control group is higher than 6.5um, and the number of broken points of the coating is also higher than 4. It can be seen that the coated paper coated with the coating paint of control group one had poor performance, high roughness, and a large number of broken points per square centimeter. And the solid content and viscosity of the first control group are higher, which is not beneficial to the coating of the coating paint. In summary, in the four examples, the performance of the coating paint of the first experimental group was the best, the performance of the coating paint of the third experimental group was the second, and the performance of the coating paint of the second experimental group was the second of the first and third experimental groups, but the performance of the coating paint of the second experimental group also satisfied the requirement of the coated paper for the coating paint. The coated paint of control group one had the worst performance. The performance of the coated paper coated with the control one coat paint was also the worst.
The coating paint provided by the invention comprises the following components in parts by weight: 400 parts of water 285-. By coating the coating paint on paper, the problems of large surface roughness and poor anti-blooming performance of the existing coated paper can be improved.
The above description is only a part of the embodiments of the present invention, and not intended to limit the scope of the present invention, and all equivalent devices or equivalent processes performed by the contents of the present specification and the drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The coating is characterized by comprising the following components in parts by weight: 400 parts of water 285-;
the concentration of the pigment is 65-80%, the concentration of the polyvinyl alcohol is 15-25%, and the concentration of the waterproof agent is 50-55%.
2. The coating paint of claim 1, wherein the pigment comprises calcium carbonate or talc or china clay.
3. The coating paint of claim 2, wherein the pigment particle size is in the range of 55-65 microns.
4. The coating paint of claim 3, wherein the water-resistance agent comprises: organic phosphine scale and corrosion inhibitor or polyamide polyurea high molecular oligomer.
5. The coating slip of claim 4, wherein the coating slip has a solids content of 30-32% and a viscosity of 75-115 mpa.s.
6. A method of preparing a coating material, comprising:
obtaining 400 parts of 285-400 parts of water, 120 parts of starch, 10-50 parts of pigment, 1-8 parts of polyvinyl alcohol, 1-5 parts of waterproof agent and 1-3 parts of lubricant according to parts by weight;
stirring the materials at 45-47 ℃ for 5-6 minutes;
the concentration of the pigment is 65-80%, the concentration of the polyvinyl alcohol is 15-25%, and the concentration of the waterproof agent is 50-55%.
7. The method of preparing a coating paint of claim 6, wherein the pigment includes calcium carbonate or talc or china clay.
8. The method of preparing a coating paint of claim 7, wherein the pigment particle size is in the range of 55-65 μm.
9. The method of preparing a coating paint according to claim 8, wherein the water-resistant agent comprises: organic phosphine scale and corrosion inhibitor or polyamide polyurea high molecular oligomer.
10. The method of preparing a coating paint according to claim 9, wherein the coating paint is prepared with a solid content of 30-32% and a viscosity of 75-115 mpa.s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010038107.0A CN111206455A (en) | 2020-01-14 | 2020-01-14 | Coating paint and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010038107.0A CN111206455A (en) | 2020-01-14 | 2020-01-14 | Coating paint and preparation method thereof |
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| Publication Number | Publication Date |
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| CN111206455A true CN111206455A (en) | 2020-05-29 |
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| CN202010038107.0A Pending CN111206455A (en) | 2020-01-14 | 2020-01-14 | Coating paint and preparation method thereof |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102808356A (en) * | 2011-06-02 | 2012-12-05 | 金东纸业（江苏）股份有限公司 | Papermaking paint and coated paper using same |
| CN108410277A (en) * | 2018-03-30 | 2018-08-17 | 广州集泰化工股份有限公司 | A kind of modified environment protection type water-based anticorrosive paint and preparation method thereof |
-
2020
- 2020-01-14 CN CN202010038107.0A patent/CN111206455A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102808356A (en) * | 2011-06-02 | 2012-12-05 | 金东纸业（江苏）股份有限公司 | Papermaking paint and coated paper using same |
| CN108410277A (en) * | 2018-03-30 | 2018-08-17 | 广州集泰化工股份有限公司 | A kind of modified environment protection type water-based anticorrosive paint and preparation method thereof |
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