CN114808527A - Casting and curing process of coated paper pigment mixing cylinder based on film casting method - Google Patents
Casting and curing process of coated paper pigment mixing cylinder based on film casting method Download PDFInfo
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- CN114808527A CN114808527A CN202210445762.7A CN202210445762A CN114808527A CN 114808527 A CN114808527 A CN 114808527A CN 202210445762 A CN202210445762 A CN 202210445762A CN 114808527 A CN114808527 A CN 114808527A
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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
- 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
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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
- D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
- D21H25/04—Physical treatment, e.g. heating, irradiating
- D21H25/06—Physical treatment, e.g. heating, irradiating of impregnated or coated paper
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/30—Multi-ply
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Abstract
The invention relates to the technical field of electron beam curing, in particular to a casting curing process of a coated paper pigment mixing cylinder based on a film casting method. Which comprises the following steps: allowing the base paper and the barrier paper to enter a first electron beam treatment area through a nip roll, irradiating the back of the barrier paper through an electron beam treatment machine, and curing to form composite paper; coating a second coating on the front surface of the composite paper through a coating machine, and irradiating the composite paper by passing through the back surface of the composite paper through an electron beam processor to cure the second coating; compared with the traditional forming method of the coated paper, the process has the characteristics of short drying time, low processing temperature, low energy consumption, space saving and low pollution, the prepared coated paper has a higher smooth surface compared with the traditional thermal drying, and the barrier paper is attached to the surface of the base paper by adopting the combination of a film casting method and a cylinder casting method to endow the base paper with certain barrier property, so that the second coating cannot permeate the base paper layer, and the prepared coated paper has a more excellent coating surface.
Description
Technical Field
The invention relates to the technical field of electron beam curing, in particular to a casting curing process of a coated paper pigment mixing cylinder based on a film casting method.
Background
In recent years, printed matter has been rapidly visualized and colorized, and there has been an increasing demand for coated paper having an ink-receiving layer formed as a smooth coating layer on the surface of paper as compared with non-coated printing paper. In addition, in accordance with the recent cost reduction policy, there is an increasing demand for weight reduction while maintaining the conventional paper thickness and printing quality. The smoothness of the coating layer is important in terms of the print quality of the coated paper, and the surface smoothing treatment is generally performed by a supercalender, a soft nip calender or the like. However, since this treatment is to increase the surface smoothness by pressing the paper, the density is increased and the paper thickness is reduced, and therefore, a coated paper pigment mixing barrel casting curing process by a film casting method is required to overcome the disadvantages of the prior art.
Disclosure of Invention
The invention aims to provide a casting and curing process of a coated paper pigment mixing cylinder based on a film casting method, so as to solve the problems in the background technology.
In order to achieve the aim, the invention provides a casting and curing process of a coated paper pigment mixing cylinder based on a film casting method, which comprises the following steps:
s1, conveying the base paper through a conveying roller, allowing the base paper to enter a first electron beam treatment area through a nip roll, coating first coating on the barrier paper through a coating machine, and adhering the barrier paper to the back of the base paper through a pressure roll;
s2, allowing the base paper and the barrier paper to enter a first electron beam treatment area through a nip roll, irradiating the back of the barrier paper through an electron beam treatment machine, and curing to form composite paper;
s3, coating a second coating on the front surface of the composite paper through a coating machine, conveying the composite paper to a second electron beam processing area through a nip roll, and attaching the front surface to the surface of a casting cylinder;
and S4, irradiating the composite paper through an electron beam processor from the back of the composite paper to cure the second coating, thereby forming the coated paper.
As a further improvement of the technical solution, in S1, the first paint at least comprises the following raw materials: the thermosetting acrylic resin, the silica sol, the zinc phosphate, the epoxy resin emulsion dissolved in ethanol and the balance of deionized water are used for improving the characteristics of water resistance, chemical resistance, heat resistance and the like of paper and endowing the base paper with certain barrier property, and the second coating cannot permeate the base paper layer in the next barrel casting process, so that the prepared coated paper has an excellent coating surface.
As a further improvement of the technical scheme, the preparation method of the first coating comprises the following steps: adding the silica sol into acrylic resin and epoxy resin emulsion dissolved in ethanol, mixing, adding zinc phosphate and deionized water, and mixing to prepare the first coating.
As a further improvement of the present invention, in S2 and S4, the electron beam processing machine temperature is room temperature.
As a further improvement of the technical solution, in S3, the coating material ii at least comprises the following raw materials: the thermosetting acrylic resin, the silica sol, the zinc phosphate and the balance of deionized water have the characteristics of water resistance, chemical resistance, heat resistance and the like, and have lower pollution compared with solvent-based coatings.
As a further improvement of the technical scheme, the preparation method of the second coating comprises the following steps: adding the silica sol into acrylic resin, mixing, adding zinc phosphate and deionized water, and mixing to prepare the second coating.
As a further improvement of the technical scheme, in the S2 and the S4, the irradiation intensity of the electron beam processor is less than or equal to 1rad, and the influence of irradiation on the paper strength can be reduced by lower irradiation intensity.
Compared with the prior art, the invention has the beneficial effects that:
1. compared with the traditional forming method of the coated paper, the process of the invention has the characteristics of short drying time, low processing temperature, low energy consumption, space saving and low pollution, and the prepared coated paper has a higher smooth surface compared with the traditional thermal drying.
2. In the coated paper pigment mixing barrel casting curing process based on the film casting method, the film casting method and the barrel casting method are combined, the barrier paper is attached to the surface of the base paper, certain barrier property is given to the base paper, and the second coating cannot penetrate into the base paper layer, so that the prepared coated paper has a more excellent coating surface.
Drawings
FIG. 1 is a schematic overall flow chart of example 1 of the present invention;
FIG. 2 is a schematic view of the folding resistance curve of the coated paper of example 1 of the present invention;
FIG. 3 is a schematic overall flow chart of embodiment 4 of the present invention;
FIG. 4 is a graphical representation of the surface smoothness of various coated papers of example 5 of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious 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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
According to the illustration in fig. 1, the embodiment of the invention provides a casting and curing process of a coated paper pigment mixing cylinder based on a film casting method, which comprises the following steps:
1. conveying the base paper through a conveying roller, entering a first electron beam treatment area through a nip roll, coating a first coating on the barrier paper through a coating machine, and attaching the barrier paper to the back of the base paper through the nip roll;
2. the raw paper and the barrier paper enter a first electron beam treatment area through a nip roll, the back of the barrier paper is irradiated by an electron beam processor under the condition that the irradiation intensity is less than or equal to 1rad at room temperature, and composite paper is formed after curing;
3. coating a second coating on the front surface of the composite paper through a coating machine, conveying the composite paper to a second electron beam treatment area through a material pressing roller, and attaching the front surface to the surface of a casting cylinder;
4. and at room temperature, passing through the back of the composite paper by an electron beam processor under the condition that the irradiation intensity is less than or equal to 1rad for irradiation, and curing the second coating to form the coated paper.
Wherein, the irradiation intensity of the electron beam processor is less than or equal to 1rad, and the lower irradiation intensity can reduce the influence of irradiation on the paper intensity, taking the folding endurance of the coated paper as an example, and concretely, the figure is shown in fig. 2.
Compared with the traditional forming method of the coated paper, the process has the characteristics of short drying time, low processing temperature, low energy consumption, space saving and low pollution, and the prepared coated paper has a higher smooth surface than the traditional thermal drying method;
the barrier paper is attached to the surface of the base paper by combining a film casting method and a cylinder casting method, so that the base paper has certain barrier property, and the second coating cannot penetrate into the base paper layer, so that the prepared coated paper has an excellent coating surface.
Example 2
On the basis of the above example 1, the present embodiment provides a preparation method of the first coating, including the following steps:
adding the silica sol into acrylic resin and epoxy resin emulsion dissolved in ethanol, mixing, adding zinc phosphate and deionized water, and mixing to obtain the first coating, wherein the first coating is used for improving the water resistance, chemical resistance, heat resistance and other characteristics of paper and endowing base paper with certain barrier property, and the second coating cannot penetrate into the base paper layer in the next barrel casting process, so that the prepared coated paper has an excellent coating surface.
Example 3
On the basis of the above example 1, this example provides a preparation method of coating No. two, including the following steps:
the silica sol is added into acrylic resin to be mixed, and then zinc phosphate and deionized water are added to be mixed to prepare the coating II.
Example 4
According to fig. 3, on the basis of the above embodiment 1, an embodiment of the present invention further provides a cast curing process for a coated paper tube, which includes the following steps:
1. conveying the base paper through a conveying roller, coating a second coating through a coating machine, conveying the base paper to a second electron beam treatment area through a material pressing roller, and attaching the front side of the base paper to the surface of a casting cylinder;
2. at room temperature, an electron beam processor passes through the back of the composite paper to irradiate under the condition that the irradiation intensity is less than or equal to 1rad, and the second coating is cured to form the coated paper, wherein the lower irradiation intensity can reduce the influence of irradiation on the paper intensity.
In the embodiment, the cylinder casting curing process is independently adopted, compared with the traditional forming method of the coated paper, the process has the characteristics of short drying time, low processing temperature, low energy consumption, space saving and low pollution, the prepared coated paper has a higher smooth surface compared with the traditional heat drying, and compared with the mixed process of the film casting and the cylinder casting method in the embodiment 1, the smoothness of the prepared coated paper is slightly reduced, and although the smoothness is reduced, the smoothness and the surface precision are better compared with the coated paper in the traditional process.
Example 5
The process utilizes two characteristics of permeability of electron beams and solvent-free coating, and compared with the prior art for manufacturing coated paper, the surface smoothness of the product produced by the process is higher;
the surface of the coated paper formed by the conventional hot dry cast coating method, the extrusion lamination method and the process of the present invention was compared in a three-dimensional smoothness tester chart, and the result is shown in fig. 4.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and the present invention is not limited to the embodiments, and various changes and modifications may be made without departing from the spirit and scope of the present invention, and these changes and modifications fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The casting and curing process of the coated paper pigment mixing cylinder based on the film casting method is characterized by comprising the following steps of:
s1, conveying the base paper through a conveying roller, enabling the base paper to enter a first electron beam processing area through a nip roll, coating first coating on the barrier paper through a coating machine, and attaching the barrier paper to the back of the base paper through the nip roll;
s2, allowing the base paper and the barrier paper to enter a first electron beam treatment area through a nip roll, irradiating the back of the barrier paper through an electron beam treatment machine, and curing to form composite paper;
s3, coating a second coating on the front surface of the composite paper through a coating machine, conveying the composite paper to a second electron beam processing area through a nip roll, and attaching the front surface to the surface of a casting cylinder;
and S4, irradiating the composite paper through an electron beam processor from the back of the composite paper to cure the second coating, thereby forming the coated paper.
2. The coated paper pigment mixing drum casting curing process based on the thin film casting method according to claim 1, characterized in that: in the S1, the first coating at least comprises the following raw materials: thermosetting acrylic resin, silica sol, zinc phosphate, epoxy resin emulsion dissolved in ethanol and the balance of deionized water.
3. The coated paper pigment mixing drum casting curing process based on the thin film casting method according to claim 2, characterized in that: the preparation method of the first coating comprises the following steps: adding the silica sol into acrylic resin and epoxy resin emulsion dissolved in ethanol, mixing, adding zinc phosphate and deionized water, and mixing to prepare the first coating.
4. The coated paper pigment mixing drum casting curing process based on the thin film casting method according to claim 1, characterized in that: in the S2 and the S4, the electron beam processing machining temperature is a room temperature.
5. The coated paper pigment mixing drum casting curing process based on the thin film casting method according to claim 1, characterized in that: in the S3, the second coating at least comprises the following raw materials: thermosetting acrylic resin, silica sol and zinc phosphate, and the balance of deionized water.
6. The coated paper pigment mixing drum casting curing process based on the thin film casting method according to claim 5, characterized in that: the preparation method of the second coating comprises the following steps: adding the silica sol into acrylic resin, mixing, adding zinc phosphate and deionized water, and mixing to prepare the second coating.
7. The coated paper pigment mixing drum casting curing process based on the thin film casting method according to claim 1, characterized in that: in the S2 and the S4, the irradiation intensity of the electron beam processor is less than or equal to 1 rad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210445762.7A CN114808527A (en) | 2022-04-26 | 2022-04-26 | Casting and curing process of coated paper pigment mixing cylinder based on film casting method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210445762.7A CN114808527A (en) | 2022-04-26 | 2022-04-26 | Casting and curing process of coated paper pigment mixing cylinder based on film casting method |
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| CN114808527A true CN114808527A (en) | 2022-07-29 |
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| CN202210445762.7A Pending CN114808527A (en) | 2022-04-26 | 2022-04-26 | Casting and curing process of coated paper pigment mixing cylinder based on film casting method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101519858A (en) * | 2009-03-20 | 2009-09-02 | 博源科技材料（烟台）有限公司 | Direct vacuum aluminum-plated paper or paperboard and production process thereof |
| US20130045330A1 (en) * | 2011-08-19 | 2013-02-21 | Neenah Paper, Inc. | Casting Papers And Their Methods Of Formation And Use |
| JP2013076204A (en) * | 2013-01-30 | 2013-04-25 | Hokuetsu Kishu Paper Co Ltd | Cast-coated paper and method for producing the same |
| CN110846931A (en) * | 2019-11-13 | 2020-02-28 | 烟台博源科技材料股份有限公司 | Novel environment-friendly high-barrier direct plating paper and preparation process thereof |
-
2022
- 2022-04-26 CN CN202210445762.7A patent/CN114808527A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101519858A (en) * | 2009-03-20 | 2009-09-02 | 博源科技材料（烟台）有限公司 | Direct vacuum aluminum-plated paper or paperboard and production process thereof |
| US20130045330A1 (en) * | 2011-08-19 | 2013-02-21 | Neenah Paper, Inc. | Casting Papers And Their Methods Of Formation And Use |
| JP2013076204A (en) * | 2013-01-30 | 2013-04-25 | Hokuetsu Kishu Paper Co Ltd | Cast-coated paper and method for producing the same |
| CN110846931A (en) * | 2019-11-13 | 2020-02-28 | 烟台博源科技材料股份有限公司 | Novel environment-friendly high-barrier direct plating paper and preparation process thereof |
Non-Patent Citations (2)
| Title |
|---|
| 祖彬等: "《功能纸与纸状功能性材料》", 31 August 2007, 哈尔滨工程大学出版社 * |
| 艾海荣（主编）: "《印刷材料》", 31 August 2016, 中国轻工业出版社 * |
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