CN110552254A - preparation method of water transfer printing paper and water transfer printing paper - Google Patents
preparation method of water transfer printing paper and water transfer printing paper Download PDFInfo
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- CN110552254A CN110552254A CN201910660412.0A CN201910660412A CN110552254A CN 110552254 A CN110552254 A CN 110552254A CN 201910660412 A CN201910660412 A CN 201910660412A CN 110552254 A CN110552254 A CN 110552254A
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- coating
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- corn starch
- mixing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
- B41M5/42—Intermediate, backcoat, or covering layers
- B41M5/44—Intermediate, backcoat, or covering layers characterised by the macromolecular compounds
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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
- D21H19/80—Paper comprising more than one coating
- D21H19/82—Paper comprising more than one coating superposed
-
- 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
- D21H19/80—Paper comprising more than one coating
- D21H19/84—Paper comprising more than one coating on both sides of the substrate
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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
- D21H23/52—Addition to the formed paper by contacting paper with a device carrying the material
- D21H23/56—Rolls
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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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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Paper (AREA)
Abstract
The invention is suitable for the technical field of water transfer printing paper manufacture, and discloses a preparation method of water transfer printing paper and the water transfer printing paper, wherein the preparation method of the water transfer printing paper comprises the following steps: respectively preparing a primary coating, a surface coating and a back coating, wherein the primary coating is prepared by mixing potato starch and water, and the surface coating is prepared by mixing corn starch and water; applying a primer coating to the pigment coating surface of the water transfer paper to form a primer coating on the pigment coating; applying a top coat paint to the surface of the primer coat; and coating the back coating on the back of the water transfer printing base paper to obtain the water transfer printing paper. The surface coating generated by the corn starch has excellent tight connectivity of a molecular structure after being cooled, and a layer of tough protective light film is formed on the surface of the bottom coating, so that the strength of the surface of the water transfer paper is greatly improved, and the requirement of multiple printing in a complicated process of a high-end product of a downstream client of a water transfer product is met.
Description
Technical Field
The invention relates to the technical field of water transfer printing paper manufacturing, in particular to a preparation method of water transfer printing paper and the water transfer printing paper.
Background
the water transfer paper is a product aiming at realizing the printing transfer of pictures and texts, the water transfer paper takes special paper backing paper as a base material, and the special paper is paper made of different fibers by a paper machine and has special functions. Through the sizing processing of cubic on the paper surface, form pigment coating, diaphragm glue film and dissolve the glue film on special type base stock surface, diaphragm glue film and dissolve the glue film and be the water-soluble glue film, dissolve the glue film and need possess good slidability. And after three times of glue application on the front side, the back side of the base paper needs to be subjected to one time of glue application, so that the purposes of paper shaping and structure stabilization are achieved. When the water transfer printing paper is used, various exquisite patterns or precious metal pigments are printed on the surface of the water transfer printing paper by using a printer, so that the water transfer printing paper has higher value for products and is called as water transfer printing paper. The printed water transfer printing paper separates patterns by water pressure and then perfectly transfers the exquisite patterns to the surfaces of commodities by using a water mark type transfer method to form exquisite and high-grade appearance effects.
At the present stage, the surface strength of paper begins to be reduced when fourth to fifth pigments are printed on the same paper surface of water transfer paper circulating in the market, the problems of color block color depth difference, paper softening, easy deformation and the like occur in subsequent printing, the difficulty of subsequent printing operation is increased, and a small number of water transfer paper with better quality can support the fact that abnormity begins to occur after seventh and eighth pigments are printed. In this case, some high end products requiring 10 to 12 pigment passes of printing are always without water transfer papers that meet their printing requirements.
Disclosure of Invention
The invention aims to provide a preparation method of water transfer paper and the water transfer paper, and aims to solve the technical problems that the surface strength of paper is reduced when the fourth to fifth times of pigments are printed on the same paper surface of the water transfer paper which circulates in the existing market, and color blocks are different in color depth and are soft and easy to deform during subsequent printing.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a preparation method of water transfer printing paper, which comprises the following steps:
respectively preparing a primary coating, a surface coating and a back coating, wherein the primary coating is prepared by mixing potato starch and water, and the surface coating is prepared by mixing corn starch and water;
Applying the base coat to the surface of the pigment coating of the water transfer printing paper to form a base coat on the pigment coating;
applying surface sizing, namely coating the surface of the base coat with the surface coating;
And back coating and sizing, namely coating the back coating on the back of the water transfer printing base paper to obtain the water transfer printing paper.
further, the Engler viscosity of the priming paint is between 80 and 90S; and/or the presence of a gas in the atmosphere,
the thickness of the bottom coating is 10 microns +/-2 microns; and/or the presence of a gas in the atmosphere,
the base coat is coated on the surface of the pigment coating by a coating machine through a three-rubber-roller coating method, wherein the pressure of a metering rod is 0.1MPA, the rotating speed of the metering rod is 30m/min, and the running speed of the coating machine is 200 m/min.
Further, the preparation of the base coating comprises the following steps:
Mixing water and potato starch according to a mass ratio of 10: (4-6) mixing in a reaction kettle according to the proportion to obtain a potato starch mixed solution;
heating and stirring the potato starch mixed solution at the same time, so that the heating is stopped when the temperature of the potato starch mixed solution is raised to a first preset heating temperature, and the base coating is prepared, wherein the first preset heating temperature is between 90 and 110 ℃.
further, in the process of preparing the base coating by mixing water and potato starch, the water and the potato starch are mixed according to the mass ratio of 10: 5, mixing in proportion; and/or the presence of a gas in the atmosphere,
the first preset heating temperature is 103 ℃ +/-3 ℃.
further, the Engler viscosity of the surface coating is 10-15S; and/or the presence of a gas in the atmosphere,
The thickness of the surface coating is 4 microns +/-2 microns; and/or the presence of a gas in the atmosphere,
the surface coating is coated on the surface of the bottom coating by a coating machine through a three-rubber-roller bar coating method, wherein the pressure of a metering bar is 0.15MPA, the rotating speed of the metering bar is 80m/min, and the operating speed of the coating machine is 200 m/min.
Further, the preparation of the top coating comprises the following steps:
water and corn starch are mixed according to the mass ratio of 10: (2-4) mixing in a reaction kettle according to the proportion to obtain a corn starch mixed solution;
heating and stirring the corn starch mixed solution at the same time, so that the heating is stopped when the temperature of the corn starch mixed solution is raised to a second preset heating temperature, and the pasty coating is prepared, wherein the second preset heating temperature is 80-100 ℃;
And cooling the pasty paint to a first preset cooling temperature to obtain the surface coating paint, wherein the first preset cooling temperature is between 30 and 50 ℃.
Further, in the process of preparing the top coating by mixing water and corn starch, the water and the corn starch are mixed according to the mass ratio of 10: 3, mixing in proportion; and/or the presence of a gas in the atmosphere,
The second preset heating temperature is 90 +/-2 ℃; and/or the presence of a gas in the atmosphere,
the first preset cooling temperature is 35 +/-1 ℃.
further, the preparation of the back coating comprises the following steps:
Water and corn starch are mixed according to the mass ratio of 10: (1-2) mixing in a reaction kettle according to the proportion to obtain a corn starch mixed solution;
heating and stirring the corn starch mixed solution at the same time, so that the heating is stopped when the temperature of the corn starch mixed solution is raised to a third preset heating temperature, and the pasty coating is prepared, wherein the third preset heating temperature is between 85 and 105 ℃;
And cooling the pasty paint to a second preset cooling temperature to obtain the surface coating paint, wherein the second preset cooling temperature is between 30 and 50 ℃.
Further, in the process of preparing the back coating by mixing water and corn starch, the water and the corn starch are mixed according to the mass ratio of 10: 1.5; and/or the presence of a gas in the atmosphere,
The third preset heating temperature is 95 +/-2 ℃; and/or the presence of a gas in the atmosphere,
the second preset cooling temperature is 35 +/-1 ℃.
the invention also provides water transfer printing paper which is prepared by the preparation method of the water transfer printing paper.
Compared with the prior art, the invention has the beneficial effects that:
the surface coating generated by the corn starch has excellent tight connectivity of a molecular structure after being cooled, and a layer of tough protective light film is formed on the surface of the bottom coating, so that the strength of the surface of the water transfer paper is greatly improved, and the requirement of multiple printing in a complicated process of a high-end product of a downstream client of a water transfer product is met.
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, 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 structures shown in the drawings without creative efforts.
Fig. 1 is a flow chart of the preparation of a water transfer paper provided by an embodiment of the present invention;
Fig. 2 is a cross-sectional view of a water transfer paper provided by an embodiment of the present invention;
Fig. 3 is a schematic view illustrating the application of a primer coating to a pigment coating layer of a water transfer paper using a three-roll bar coating method according to an embodiment of the present invention.
in the figure: 10. priming paint; 20. a pigment coating; 30. a base coat layer; 40. coating a coating on the surface; 50. water transfer printing base paper; 60. back coating the coating; 70. a trough; 80. a feeding roller; 90. coating a rubber roller; 100. a compression roller; 200. a metering rod; 300. water transfer printing paper to-be-processed products; 400. a water transfer paper precursor.
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.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
it will also be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
in addition, the descriptions related to "first", "second", etc. in the present invention are 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" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1 to 3, an embodiment of the present invention provides a water transfer printing paper, which is prepared by the following method, and the preparation method of the water transfer printing paper includes the following steps:
referring to fig. 1 and 2, step S101 is to prepare a base coating 10, a top coating and a back coating respectively, wherein the base coating 10 using corn starch as a main raw material is discarded, and the main raw material of the base coating 10 is prepared by mixing potato starch, potato starch and water, which have higher water content, low protein content, larger particles and are more likely to cause gelatinization reaction, to form the base coating 10.
The corn starch with high gel strength after cooling is used as the main raw material of the surface coating, and the surface coating is prepared by mixing the corn starch and water.
Step S102, primary coating sizing, namely coating the primary coating 10 on the surface of the pigment coating 20 of the water transfer printing paper to form the primary coating 30 on the pigment coating 20, wherein the primary coating 30 is also called as a diaphragm glue layer, the water transfer printing backing paper 50 is arranged below the pigment coating 20, the water transfer printing backing paper 50 is also called as a base material, the thickness of the primary coating 30 of the water transfer printing paper is accurately and quantitatively controlled to be 10 mu m +/-2 mu m, the quantitative content is not less than 10 g/square meter, the thickness of the primary coating 30 and the tight connectivity of a molecular structure after potato gelatinization are increased, and the tightness of the primary coating 30 is enhanced, wherein the quantitative content refers to the weight of each square meter of the primary coating 30 in a dry state.
step S103, surface coating and sizing, wherein a surface coating is coated on the surface of the bottom coating 30 to form a surface coating 40 on the bottom coating 30, the surface coating 40 is also called as a glue dissolving layer, the thickness of the surface coating 40 of the water transfer paper is accurately and quantitatively controlled to be 4 microns +/-2 microns, the quantity is 3 g/square meter, a layer of tough protective optical film is formed on the surface of the bottom coating 30 by utilizing the close connectivity of an excellent molecular structure of the surface coating generated by corn starch after cooling, and the surface strength of the water transfer paper is enhanced by combining the molecular composition of the bottom coating 10 and the surface coating with the sizing and sizing.
and step S104, back coating and sizing, namely coating back coating paint on the back surface of the water transfer printing base paper 50 to form a back coating 60 on the back surface of the water transfer printing base paper 50, so as to prepare the water transfer printing paper.
the preparation of the primer coating 10 in this example includes the following steps:
mixing water and potato starch according to a mass ratio of 10: (4-6) mixing in a reaction kettle according to the proportion to obtain a potato starch mixed solution; the potato starch mixed solution is heated and uniformly stirred at the same time, so that the heating is stopped when the temperature of the potato starch mixed solution is stably raised to a first preset heating temperature, the bottom coating 10 is prepared, the Engler viscosity of the bottom coating 10 is 80-90S, and the coating glue is preferably milky, crystal and transparent. Wherein the first preset heating temperature is between 90 ℃ and 110 ℃, and preferably, the first preset heating temperature is 103 ℃ +/-3 ℃.
As a preferred embodiment, in the process of preparing the undercoat paint 10 by mixing water and potato starch, the water and potato starch are precisely and quantitatively controlled in a mass ratio of 10: 5, mixing.
the preparation of the topcoat coating in this example comprises the following steps:
Water and corn starch are mixed according to the mass ratio of 10: (2-4) mixing in a reaction kettle according to the proportion to obtain a corn starch mixed solution; heating and stirring the corn starch mixed solution at the same time, so that the heating is stopped when the temperature of the corn starch mixed solution is raised to a second preset heating temperature, and thus the pasty coating is prepared, wherein the Engler viscosity of the surface coating is 10-15S, the second preset heating temperature is 80-100 ℃, and preferably, the second preset heating temperature is 90 +/-2 ℃.
And cooling the pasty paint to a first preset cooling temperature to obtain the surface paint, wherein the first preset cooling temperature is between 30 and 50 ℃, preferably 35 +/-1 ℃, specifically, the first preset cooling temperature is 35 ℃, when the paste is cooled to 35 ℃, the test viscosity is up to 12.50S, and the paint glue is light cyan, transparent and clear.
As a preferred embodiment, in the process of mixing water and corn starch to prepare the surface coating, the water and the corn starch in the water transfer printing paper are accurately and quantitatively controlled in a mass ratio of 10: 3, and mixing.
The preparation of the back coating comprises the following steps:
water and corn starch are mixed according to the mass ratio of 10: (1-2) mixing in a reaction kettle according to the proportion to obtain a corn starch mixed solution; heating and stirring the corn starch mixed solution at the same time, so that the heating is stopped when the temperature of the corn starch mixed solution is raised to a third preset heating temperature, and preparing a pasty coating, wherein the third preset heating temperature is between 85 ℃ and 105 ℃, and preferably, the third preset heating temperature is 95 +/-2 ℃; and cooling the pasty paint to a second preset cooling temperature to obtain the surface paint, wherein the second preset cooling temperature is between 30 and 50 ℃, preferably 35 +/-1 ℃, and specifically 35 ℃.
As a preferred embodiment, in the process of preparing the back coating by mixing water and corn starch, the water and the corn starch are mixed in a mass ratio of 10: 1.5.
referring further to fig. 3, the bottom coating 10 is uniformly coated on the surface of the pigment coating 20 by a three-roll bar coating method using a coater according to the present invention, which is based on the following principle: the method comprises the steps of placing the base coating 10 in a trough 70, sequentially arranging a feeding roller 80, a coating rubber roller 90 and a pressing roller 100 above the trough 70, wherein the bottom of the feeding roller 80 extends into the trough 70, the pressing roller 100 and the feeding roller 80 are respectively rotatably installed at the upper end and the lower end of the coating rubber roller 90 and are in contact with the coating rubber roller 90, a product 300 to be processed of the water transfer printing paper (comprising the water transfer printing base paper 50 and the pigment coating layer 20) penetrates between the pressing roller 100 and the coating rubber roller 90 and winds upwards from the pressing roller 100, a metering rod 200 abuts against the side edge of the coating rubber roller 90, the metering rod 200 scrapes off the redundant base coating 10 through accurate quantitative control, the bottom of the feeding roller 80 extends into the base coating 10 so as to bring the base coating 10 onto the coating rubber roller 90 during rotation, and finally forming the water transfer printing paper primary product 400 (comprising the water transfer printing base paper 50, the pigment coating layer 20 and the base coating layer 30). Wherein the pressure of the metering rod 200 is 0.1MPA, the rotating speed of the metering rod 200 is 30m/min, and the running speed of the coating machine is 200 m/min.
The length of the whole oven is 12m, the temperature of the oven is set to be 150 ℃, the primary coating 10 applied to the surface of the pigment coating 20 is dried to be qualified, the thickness of the dried water transfer printing paper is 10 mu m when the dried water transfer printing paper is detected by an NDC quantitative thickness detector, and the quantitative ratio of not less than 10 g/square meter is qualified. Because potato starch has a higher strength at high temperatures, the base coating 10 requires some measure of heat retention.
similarly, the surface coating is added into a trough, the surface coating can be uniformly coated on the surface of the bottom coating 30 by a coating machine through a three-glue-roller bar coating method, wherein the pressure of a metering bar is 0.15MPA, the rotating speed of the metering bar is 80m/min, the operating speed of the coating machine is 200m/min, the whole length of an oven is 12m, the temperature of the oven is set to be 100 ℃, the surface coating applied on the surface of the bottom coating 30 is dried to be qualified, the thickness of the dried water transfer paper is detected to be 4 mu m by an NDC quantitative thickness detector, and the quantitative rate is 3 g/square meter to be qualified.
Normal back coating and gluing, namely adding back coating into a trough, uniformly applying the back coating to the back surface of water transfer printing base paper 50 by using a three-roller bar coating method so as to prepare a water transfer printing paper final product, wherein the pressure of a metering bar is set to be 1KG, the rotating speed of the metering bar is 200m/min, the running speed of the whole machine is 200m/min, the length of an oven is 12m, the temperature of the oven is set to be 110 ℃, and the back coating applied to the back surface of the water transfer printing paper is dried to be qualified; through the above steps, water transfer paper having high surface strength is obtained.
The water transfer paper produced by the newly developed production process has the advantages that the tightness of the bottom coating layer 30 is obviously enhanced due to the increase of the thickness of the bottom coating layer 30 and the tight connection of the molecular structure of the gelatinized potato, then a layer of tough protective light film is formed on the surface of the bottom coating layer 30 by utilizing the tight connection of the excellent molecular structure of the corn starch surface coating, the surface strength of the water transfer paper is further enhanced, and finally the water transfer paper can still keep a relatively stable product shape after being subjected to printing test printing for 12 times on a downstream client, and has no abnormalities such as deformation, foaming, paper softening and the like.
the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The preparation method of the water transfer printing paper is characterized by comprising the following steps:
Respectively preparing a primary coating, a surface coating and a back coating, wherein the primary coating is prepared by mixing potato starch and water, and the surface coating is prepared by mixing corn starch and water;
applying the base coat to the surface of the pigment coating of the water transfer printing paper to form a base coat on the pigment coating;
Applying surface sizing, namely coating the surface of the base coat with the surface coating;
And back coating and sizing, namely coating the back coating on the back of the water transfer printing base paper to obtain the water transfer printing paper.
2. the method for preparing water transfer paper according to claim 1, wherein the primer coating has an Engler viscosity of 80 to 90S; and/or the presence of a gas in the atmosphere,
the thickness of the bottom coating is 10 microns +/-2 microns; and/or the presence of a gas in the atmosphere,
The base coat is coated on the surface of the pigment coating by a coating machine through a three-rubber-roller coating method, wherein the pressure of a metering rod is 0.1MPA, the rotating speed of the metering rod is 30m/min, and the running speed of the coating machine is 200 m/min.
3. The method for producing water transfer paper according to claim 1 or 2, wherein the production of the undercoat paint comprises the steps of:
mixing water and potato starch according to a mass ratio of 10: (4-6) mixing in a reaction kettle according to the proportion to obtain a potato starch mixed solution;
heating and stirring the potato starch mixed solution at the same time, so that the heating is stopped when the temperature of the potato starch mixed solution is raised to a first preset heating temperature, and the base coating is prepared, wherein the first preset heating temperature is between 90 and 110 ℃.
4. the method for producing a water transfer paper according to claim 3, wherein in the process of preparing the under-coating paint by mixing water and potato starch, the water and potato starch are mixed in a mass ratio of 10: 5, mixing in proportion; and/or the presence of a gas in the atmosphere,
The first preset heating temperature is 103 ℃ +/-3 ℃.
5. The method for producing a water transfer paper according to claim 1, wherein the top coating has an Engler viscosity of 10 to 15S; and/or the presence of a gas in the atmosphere,
the thickness of the surface coating is 4 microns +/-2 microns; and/or the presence of a gas in the atmosphere,
the surface coating is coated on the surface of the bottom coating by a coating machine through a three-rubber-roller bar coating method, wherein the pressure of a metering bar is 0.15MPA, the rotating speed of the metering bar is 80m/min, and the operating speed of the coating machine is 200 m/min.
6. the method for producing a water transfer paper according to claim 1 or 5, wherein the production of the top coat paint comprises the steps of:
Water and corn starch are mixed according to the mass ratio of 10: (2-4) mixing in a reaction kettle according to the proportion to obtain a corn starch mixed solution;
heating and stirring the corn starch mixed solution at the same time, so that the heating is stopped when the temperature of the corn starch mixed solution is raised to a second preset heating temperature, and the pasty coating is prepared, wherein the second preset heating temperature is 80-100 ℃;
And cooling the pasty paint to a first preset cooling temperature to obtain the surface coating paint, wherein the first preset cooling temperature is between 30 and 50 ℃.
7. the method of manufacturing a water transfer paper according to claim 6, wherein in the process of preparing the top coating by mixing water and corn starch, the water and corn starch are mixed in a mass ratio of 10: 3, mixing in proportion; and/or the presence of a gas in the atmosphere,
The second preset heating temperature is 90 +/-2 ℃; and/or the presence of a gas in the atmosphere,
The first preset cooling temperature is 35 +/-1 ℃.
8. the method for producing water transfer paper according to claim 1 or 5, wherein the preparation of the back coating material comprises the steps of:
Water and corn starch are mixed according to the mass ratio of 10: (1-2) mixing in a reaction kettle according to the proportion to obtain a corn starch mixed solution;
heating and stirring the corn starch mixed solution at the same time, so that the heating is stopped when the temperature of the corn starch mixed solution is raised to a third preset heating temperature, and the pasty coating is prepared, wherein the third preset heating temperature is between 85 and 105 ℃;
And cooling the pasty paint to a second preset cooling temperature to obtain the surface coating paint, wherein the second preset cooling temperature is between 30 and 50 ℃.
9. the method for producing a water transfer paper according to claim 8, wherein in the process of mixing water and corn starch to produce the back coating material, the water and corn starch are mixed in a mass ratio of 10: 1.5; and/or the presence of a gas in the atmosphere,
The third preset heating temperature is 95 +/-2 ℃; and/or the presence of a gas in the atmosphere,
The second preset cooling temperature is 35 +/-1 ℃.
10. A water transfer paper characterized by being produced by the method for producing a water transfer paper according to any one of claims 1 to 9.
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| CN201910660412.0A CN110552254A (en) | 2019-07-22 | 2019-07-22 | preparation method of water transfer printing paper and water transfer printing paper |
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| CN201910660412.0A CN110552254A (en) | 2019-07-22 | 2019-07-22 | preparation method of water transfer printing paper and water transfer printing paper |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112757828A (en) * | 2020-12-30 | 2021-05-07 | 深圳市万极科技股份有限公司 | Water transfer paper for full-automatic mechanical applique and production process thereof |
| CN112962350A (en) * | 2021-02-07 | 2021-06-15 | 广东冠豪高新技术股份有限公司 | Water transfer printing paper and preparation method thereof |
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| CN112962350A (en) * | 2021-02-07 | 2021-06-15 | 广东冠豪高新技术股份有限公司 | Water transfer printing paper and preparation method thereof |
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Application publication date: 20191210 |