CN108297564B - Holographic anti-counterfeiting laser transfer paper and preparation method thereof - Google Patents
Holographic anti-counterfeiting laser transfer paper and preparation method thereof Download PDFInfo
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- CN108297564B CN108297564B CN201810054351.9A CN201810054351A CN108297564B CN 108297564 B CN108297564 B CN 108297564B CN 201810054351 A CN201810054351 A CN 201810054351A CN 108297564 B CN108297564 B CN 108297564B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/14—Security printing
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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
- B41M5/025—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet
Abstract
A holographic anti-counterfeiting laser transfer paper and a preparation method thereof are provided, the holographic anti-counterfeiting laser transfer paper comprises a paper base layer, a first glue layer, a first holographic laser layer, a second glue layer and a second holographic laser layer which are sequentially arranged; the first glue layer is mainly prepared from 40-80 parts by weight of propyl benzene emulsion, 1-10 parts by weight of cationic starch and 1-10 parts by weight of polyvinyl alcohol; the second glue layer is mainly prepared from 45-85 parts of butylbenzene emulsion, 1-10 parts of polyoxyethylene and 1-10 parts of polyethylene glycol in parts by weight; the first holographic laser layer consists of a first holographic laser pattern and an aluminum layer or an inorganic medium layer plated on the first holographic laser pattern, and the first holographic laser pattern is in contact with the second glue layer; the second holographic laser layer consists of a second holographic laser pattern and an aluminum layer plated on the second holographic laser pattern, and the aluminum layer on the second holographic laser pattern is in contact with the second glue layer. The transfer paper has excellent anti-counterfeiting performance and printing ink adaptability.
Description
Technical Field
The invention relates to the technical field of laser, in particular to holographic anti-counterfeiting laser transfer paper and a preparation method thereof.
Background
At present, the anti-counterfeiting technology is widely applied to paper such as transfer paper, the transfer paper with the anti-counterfeiting function is popular among merchants, and the anti-counterfeiting paper not only has anti-counterfeiting performance, but also has the function of improving the brand image. However, the prior transfer paper with the anti-counterfeiting function has the problem of poor anti-counterfeiting effect. In addition, in the preparation process of the transfer paper, glue needs to be coated on the transfer film, the aluminized laser layer on the transfer film is compounded with the paper base layer through the glue, the aluminized laser layer is dried, and then the base film of the transfer film is stripped to obtain the transfer paperboard. In order to ensure the adhesive force between the aluminized laser layer and the paper base layer, the drying temperature is generally increased, however, the increase of the drying temperature inevitably causes the water loss of the paper layer, so that the flexibility of the product is poor, and the ink explosion problem during printing is caused.
Disclosure of Invention
Therefore, the holographic anti-counterfeiting laser transfer paper and the preparation method thereof are needed to be provided, wherein the holographic anti-counterfeiting laser transfer paper can improve the anti-counterfeiting performance and the printing ink adaptability.
A holographic anti-counterfeiting laser transfer paper comprises a paper base layer, a first glue layer, a first holographic laser layer, a second glue layer and a second holographic laser layer which are sequentially arranged; the first glue layer is mainly prepared from 40-80 parts by weight of propyl benzene emulsion, 1-10 parts by weight of cationic starch and 1-10 parts by weight of polyvinyl alcohol; the second glue layer is mainly prepared from 45-85 parts of butylbenzene emulsion, 1-10 parts of polyoxyethylene and 1-10 parts of polyethylene glycol in parts by weight; the first holographic laser layer consists of a first holographic laser pattern and an aluminum layer or an inorganic medium layer plated on the first holographic laser pattern, and the first holographic laser pattern is in contact with the second glue layer; the second holographic laser layer is composed of a second holographic laser pattern and an aluminum layer plated on the second holographic laser pattern, and the aluminum layer on the second holographic laser pattern is in contact with the second glue layer.
According to the holographic anti-counterfeiting laser transfer paper, the anti-counterfeiting performance can be improved by adopting the two holographic laser layers, and the unique holographic anti-counterfeiting function can be achieved by combining the two holographic laser layers. In addition, the first glue layer is mainly formed by propyl benzene emulsion, and cationic starch and polyvinyl alcohol are used for increasing the binding force between the fibers of the paper base layer and the aluminum-plated layer; the second glue layer takes styrene-butadiene emulsion as a main material and polyethylene oxide and polyethylene glycol as auxiliary materials to improve the flexibility of the coating; therefore, by arranging two glue layers with different components and performances, the problem that the flexibility and the adhesive force cannot be improved simultaneously in the traditional method is solved, the flexibility and the adhesive force of the holographic anti-counterfeiting laser transfer paper are improved simultaneously, and the adaptability of printing ink is improved.
In one embodiment, in the first glue layer, the propyl benzene emulsion is 60-80 parts, the cationic starch is 3-8 parts, and the polyvinyl alcohol is 3-8 parts.
In one embodiment, the first glue layer comprises 65 parts of propyl benzene emulsion, 5 parts of cationic starch and 3 parts of polyvinyl alcohol.
In one embodiment, in the second glue layer, 50-60 parts of the butylbenzene emulsion, 5-8 parts of polyoxyethylene and 5-8 parts of polyethylene glycol are used.
In one embodiment, in the second glue layer, the styrene-butadiene emulsion is 55 parts, the polyethylene oxide is 5 parts, and the polyethylene glycol is 8 parts.
In one embodiment, the holographic anti-counterfeiting laser transfer paper further comprises a surface varnish layer, and the surface varnish layer is arranged on the surface of the second holographic laser layer.
In one embodiment, the holographic anti-counterfeiting laser transfer paper further comprises a back coating layer, and the back coating layer is arranged on one side of the paper base layer, which is opposite to the first glue layer.
The preparation method of the holographic anti-counterfeiting laser transfer paper comprises the following steps:
preparing a first glue coating and a second glue coating; the first glue coating is prepared by the following steps: mixing the components of the first glue layer, wherein the second glue coating is prepared by the following steps: mixing the components of the second glue layer to obtain the glue;
coating transfer paint on a first base film, forming a first holographic laser pattern through laser mould pressing, and then performing vacuum aluminum plating or vacuum inorganic medium layer plating on the first holographic laser pattern to obtain a first transfer film containing a first holographic laser layer; coating transfer paint on a second base film, forming a second holographic laser pattern through laser mould pressing, and performing vacuum aluminum plating on the second holographic laser pattern to obtain a second transfer film containing a second holographic laser layer;
compounding the first transfer film with the first holographic laser layer and the paper base layer through the first glue coating, drying to form a first glue layer, and removing the first base film;
and compounding the second transfer film with the second holographic laser layer and the first holographic laser layer through the second glue coating, drying to form a second glue layer, and removing the second base film to obtain the holographic anti-counterfeiting laser transfer paper.
In one embodiment, the method further comprises the steps of forming a surface varnish layer on the surface of the second holographic laser layer, and cooling and rolling.
In one embodiment, after the forming of the second glue layer and before the removing of the second base film, a step of forming a back coating layer on a side of the paper base layer opposite to the first glue layer is further included.
Drawings
Fig. 1 is a schematic structural diagram of holographic anti-counterfeiting laser transfer paper according to an embodiment.
Detailed Description
In order that the invention may be more fully understood, a more particular description of the invention will now be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, a holographic anti-counterfeiting laser transfer paper 10 according to an embodiment includes a paper base layer 110, a first glue layer 120, a first holographic laser layer 130, a second glue layer 140, and a second holographic laser layer 150, which are sequentially disposed.
The first holographic laser layer 130 is composed of a first holographic laser pattern (not shown) and an aluminum layer or an inorganic dielectric layer (not shown) plated on the first holographic laser pattern. The first holographic laser pattern is in contact with the second glue layer 140.
The second holographic laser layer 150 is composed of a second holographic laser pattern (not shown) and an aluminum layer (not shown) plated on the second holographic laser pattern. The aluminum layer on the second holographic laser pattern contacts the second glue layer 140.
The first glue layer 120 is mainly prepared from 40-80 parts by weight of propyl benzene emulsion, 1-10 parts by weight of cationic starch and 1-10 parts by weight of polyvinyl alcohol.
The second glue layer 140 is mainly prepared from 45-85 parts by weight of styrene-butadiene emulsion, 1-10 parts by weight of polyethylene oxide and 1-10 parts by weight of polyethylene glycol.
The holographic anti-counterfeiting laser transfer paper 10 has the advantages that the anti-counterfeiting performance can be improved by adopting the two holographic laser layers, and the unique holographic anti-counterfeiting function can be achieved by combining the two holographic laser layers. In addition, the first glue layer is mainly formed by propyl benzene emulsion, and cationic starch and polyvinyl alcohol are used for increasing the binding force between the fibers of the paper base layer and the aluminum-plated layer; the second glue layer takes styrene-butadiene emulsion as a main material and polyethylene oxide and polyethylene glycol as auxiliary materials to improve the flexibility of the coating; therefore, by arranging two glue layers with different components and performances, the problem that the flexibility and the adhesive force cannot be improved simultaneously in the traditional method is solved, the flexibility and the adhesive force of the holographic anti-counterfeiting laser transfer paper are improved simultaneously, and the adaptability of printing ink is improved.
In one embodiment, the inorganic medium layer is a zinc sulfide layer, which has the effect of enhancing the laser effect.
Preferably, in the first glue layer 120, 60-80 parts of propyl benzene emulsion, 3-8 parts of cationic starch and 3-8 parts of polyvinyl alcohol are used. The first glue layer in this range is more excellent in adhesion.
More preferably, in the first glue layer 120, 65 parts of propyl benzene emulsion, 5 parts of cationic starch and 3 parts of polyvinyl alcohol are used.
Preferably, in the second glue layer 140, 50-60 parts of styrene-butadiene emulsion, 5-8 parts of polyethylene oxide and 5-8 parts of polyethylene glycol are used. The second glue layer in this range is more excellent in flexibility.
More preferably, in the second glue layer 140, 55 parts of styrene-butadiene emulsion, 5 parts of polyethylene oxide and 8 parts of polyethylene glycol are used.
In one embodiment, the holographic anti-counterfeiting laser transfer paper 10 further comprises a surface varnish layer 160, and the surface varnish layer 160 is disposed on the surface of the second holographic laser layer 150. In particular, the barrier coating may be a varnish coating.
In one embodiment, the holographic anti-counterfeiting laser transfer paper further comprises a back coating layer 170, and the back coating layer 170 is disposed on a side of the paper base layer 110 opposite to the first glue layer 120. Specifically, the back coating 170 may be a varnish coating.
The invention also provides a preparation method of the holographic anti-counterfeiting laser transfer paper, which comprises the following steps of S1-S4.
Step S1, preparing a first glue coating and a second glue coating; the first glue coating is prepared by the following steps: mixing the components of the first glue layer, wherein the second glue coating is prepared by the following steps: mixing the components of the second glue layer.
Step S2, coating transfer paint on the first base film, forming a first holographic laser pattern through laser mould pressing, and then performing vacuum aluminum plating or vacuum inorganic medium plating on the first holographic laser pattern to obtain a first transfer film containing a first holographic laser layer; and coating transfer paint on the second base film, forming a second holographic laser pattern through laser mould pressing, and performing vacuum aluminum plating on the second holographic laser pattern to obtain a second transfer film containing a second holographic laser layer.
In one embodiment, the inorganic dielectric layer is a zinc sulfide layer. Specifically, the first holographic laser pattern on the first base film may be a partial laser molding or a full laser molding. The second holographic laser pattern on the second base film is a full laser molding. The patterns of the first holographic laser pattern and the second holographic laser pattern can be selected to be the same or different, and the patterns of the first holographic laser pattern can be selected in multiple ways, so that a unique holographic anti-counterfeiting function is achieved. It will be appreciated that the transfer coating may be a conventional transfer coating.
And step S3, compounding the first transfer film with the paper base layer through the first glue coating by the first holographic laser layer, drying to form a first glue layer, and removing the first base film.
Specifically, step S3 is compounded by three-roll gluing.
The first glue layer is formed on the paper base layer firstly, because the drying temperature required by the first glue layer is higher, the better adhesive force is ensured. Specifically, the conditions for drying to form the first glue layer are drying at five temperatures of 90-95 ℃, 100-105 ℃, 120-125 ℃, 100-105 ℃ and 90-95 ℃ for 1-2 s respectively. Preferably, the conditions for drying to form the first glue layer are drying at five temperatures of 90 ℃, 100 ℃, 120 ℃, 100 ℃ and 90 ℃ for 1-2 s respectively.
And step S4, compounding the second transfer film with the first holographic laser layer through a second glue coating, drying to form a second glue layer, and removing the second base film to obtain the holographic anti-counterfeiting laser transfer paper.
And step S4, compounding by a three-roller gluing mode.
The second glue layer can be ensured to have better flexibility and bonding force only by drying at a lower temperature. Specifically, the conditions for drying to form the second glue layer are that the second glue layer is dried for 1-2 s at five temperatures of 80-85 ℃, 90-95 ℃, 100-105 ℃, 90-95 ℃ and 80-85 ℃. Preferably, the conditions for drying to form the second glue layer are drying at 80 ℃, 90 ℃, 100 ℃, 90 ℃ and 80 ℃ for 1-2 s respectively.
It is understood that in other embodiments, the method further comprises the steps of forming a surface varnish layer on the second holographic laser layer, and cooling and rolling. Specifically, after the varnish coating is coated, balanced drying is carried out in an oven, cooling is carried out, and finally winding is carried out.
It is understood that in other embodiments, after forming the second glue layer and before removing the second base film, a step of forming a back coat layer on the paper base layer on the side opposite to the first glue layer is further included.
The preparation method of the holographic anti-counterfeiting laser transfer paper is simple, the flexibility and the adhesive force of the prepared holographic anti-counterfeiting laser transfer paper are improved at the same time, and the problem that the flexibility and the adhesive force cannot be improved at the same time in the traditional method is solved. And the laser effect is enhanced by the two laser layers.
The following are specific examples.
Example 1
And preparing a first glue coating. The first glue coating is prepared by the following steps: 65 parts of propyl benzene emulsion, 5 parts of cationic starch and 3 parts of polyvinyl alcohol are mixed to obtain the modified polypropylene fiber.
And preparing a second glue coating. The second glue coating is prepared by the following steps: mixing 55 parts of butylbenzene emulsion, 5 parts of polyoxyethylene and 8 parts of polyethylene glycol.
Coating transfer paint on the first base film, forming a first holographic laser pattern through laser mould pressing, and then performing vacuum aluminum plating on the first holographic laser pattern to obtain a first transfer film containing a first holographic laser layer. And (3) gluing and compounding the first transfer film and the front surface of the paper base layer through a first glue coating by using a three-roller, drying the first transfer film at five temperatures of 90 ℃, 100 ℃, 120 ℃, 100 ℃ and 90 ℃ for 1-2 s respectively to form a first glue layer, and removing the first base film.
And coating transfer paint on the second base film, forming a second holographic laser pattern through laser mould pressing, and performing vacuum aluminum plating on the second holographic laser pattern to obtain a second transfer film containing a second holographic laser layer. And then, gluing and compounding the second transfer film, the second holographic laser layer and the first holographic laser layer through a second glue coating by using three rollers, respectively drying for 1-2 s at the five temperatures of 80 ℃, 90 ℃, 100 ℃, 90 ℃ and 80 ℃ to form a second glue layer, coating the back of the paper base layer to form a varnish back coating, and removing the second base film. And forming a surface varnish layer on the second holographic laser layer, cooling and rolling to obtain the holographic anti-counterfeiting laser transfer paper.
Example 2
And preparing a first glue coating. The first glue coating is prepared by the following steps: 60 parts of propyl benzene emulsion, 8 parts of cationic starch and 5 parts of polyvinyl alcohol are mixed to obtain the modified polypropylene fiber.
And preparing a second glue coating. The second glue coating is prepared by the following steps: mixing 50 parts of butylbenzene emulsion, 8 parts of polyoxyethylene and 6 parts of polyethylene glycol.
Coating transfer paint on the first base film, forming a first holographic laser pattern through laser mould pressing, and plating a zinc sulfide layer on the first holographic laser pattern in a vacuum manner to obtain a first transfer film containing the first holographic laser layer. And (3) gluing and compounding the first transfer film and the front surface of the paper base layer through a first glue coating by using a three-roller, drying the first transfer film at five temperatures of 90 ℃, 100 ℃, 120 ℃, 100 ℃ and 90 ℃ for 1-2 s respectively to form a first glue layer, and removing the first base film.
And coating transfer paint on the second base film, forming a second holographic laser pattern through laser mould pressing, and performing vacuum aluminum plating on the second holographic laser pattern to obtain a second transfer film containing a second holographic laser layer. And then, gluing and compounding the second transfer film, the second holographic laser layer and the first holographic laser layer through a second glue coating by using three rollers, respectively drying for 1-2 s at the five temperatures of 80 ℃, 90 ℃, 100 ℃, 90 ℃ and 80 ℃ to form a second glue layer, coating the back of the paper base layer to form a varnish back coating, and removing the second base film. And forming a surface varnish layer on the second holographic laser layer, cooling and rolling to obtain the holographic anti-counterfeiting laser transfer paper.
Example 3
And preparing a first glue coating. The first glue coating is prepared by the following steps: mixing 80 parts of propyl benzene emulsion, 3 parts of cationic starch and 8 parts of polyvinyl alcohol to obtain the modified polypropylene fiber.
And preparing a second glue coating. The second glue coating is prepared by the following steps: mixing 60 parts of butylbenzene emulsion, 6 parts of polyoxyethylene and 5 parts of polyethylene glycol.
Coating transfer paint on the first base film, forming a first holographic laser pattern through laser mould pressing, and then performing vacuum aluminum plating on the first holographic laser pattern to obtain a first transfer film containing a first holographic laser layer. And (3) gluing and compounding the first transfer film and the front surface of the paper base layer through a first glue coating by using a three-roller, drying the first transfer film at five temperatures of 90 ℃, 100 ℃, 120 ℃, 100 ℃ and 90 ℃ for 1-2 s respectively to form a first glue layer, and removing the first base film.
And coating transfer paint on the second base film, forming a second holographic laser pattern through laser mould pressing, and performing vacuum aluminum plating on the second holographic laser pattern to obtain a second transfer film containing a second holographic laser layer. And then, gluing and compounding the second transfer film, the second holographic laser layer and the first holographic laser layer through a second glue coating by using three rollers, respectively drying for 1-2 s at the five temperatures of 80 ℃, 90 ℃, 100 ℃, 90 ℃ and 80 ℃ to form a second glue layer, coating the back of the paper base layer to form a varnish back coating, and removing the second base film. And forming a surface varnish layer on the second holographic laser layer, cooling and rolling to obtain the holographic anti-counterfeiting laser transfer paper.
Example 4
Example 4 is essentially the same as example 1, except that the first glue coating is made by the steps of: mixing 40 parts of propyl benzene emulsion, 1 part of cationic starch and 10 parts of polyvinyl alcohol to obtain the emulsion; the second glue coating is prepared by the following steps: mixing 45 parts of butylbenzene emulsion, 1 part of polyoxyethylene and 1 part of polyethylene glycol.
Example 5
Example 5 is essentially the same as example 1, except that the first glue coating is made by the steps of: mixing 80 parts of propyl benzene emulsion, 10 parts of cationic starch and 1 part of polyvinyl alcohol to obtain the emulsion; the second glue coating is prepared by the following steps: mixing 85 parts of butylbenzene emulsion, 10 parts of polyoxyethylene and 10 parts of polyethylene glycol.
Comparative example 1
Comparative example 1 is substantially the same as example 1 except that a step of preparing a second transfer film containing a second holographic laser layer is omitted; and the second transfer film, the second holographic laser layer and the first holographic laser layer are glued and compounded by a three-roller glue coating through a second glue coating, and the like.
Comparative example 2
Comparative example 2 is substantially the same as example 1 except that the first and second glue coatings of example 1 are reversed.
The holographic anti-counterfeiting laser transfer paper prepared in the examples 1-5 and the comparative examples 1-2 is subjected to a bonding force test and a flexibility test respectively.
And 3M adhesive tapes are respectively adhered to two side surfaces of the holographic anti-counterfeiting laser transfer paper in the adhesion force test, and the 3M adhesive tapes are pulled by force. The holographic anti-counterfeiting laser transfer paper of the embodiments 1 to 3 has no drop of any structure, and no crack in folding. The surface layers of the holographic anti-counterfeiting laser transfer paper of the embodiments 4 to 5 are slightly loose, but do not fall off, and have no cracks when folded. The surfaces of the holographic anti-counterfeiting laser transfer paper prepared in the comparative examples 1-2 all fall off and are folded in half to form cracks.
And the flexibility test is respectively detected by a T-bend instrument. The holographic anti-counterfeiting laser transfer paper of the embodiments 1 to 5 has no change after the bending resistance test, and the holographic anti-counterfeiting laser transfer paper prepared in the comparative examples 1 to 2 cracks after the bending resistance test.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. A preparation method of holographic anti-counterfeiting laser transfer paper is characterized in that the holographic anti-counterfeiting laser transfer paper comprises a paper base layer, a first glue layer, a first holographic laser layer, a second glue layer and a second holographic laser layer which are sequentially arranged; the first glue layer is mainly prepared from 40-80 parts by weight of propyl benzene emulsion, 1-10 parts by weight of cationic starch and 1-10 parts by weight of polyvinyl alcohol; the second glue layer is mainly prepared from 45-85 parts of butylbenzene emulsion, 1-10 parts of polyoxyethylene and 1-10 parts of polyethylene glycol in parts by weight; the first holographic laser layer consists of a first holographic laser pattern and an aluminum layer or an inorganic medium layer plated on the first holographic laser pattern, and the first holographic laser pattern is in contact with the second glue layer; the second holographic laser layer consists of a second holographic laser pattern and an aluminum layer plated on the second holographic laser pattern, and the aluminum layer on the second holographic laser pattern is in contact with the second glue layer;
the preparation method comprises the following steps:
preparing a first glue coating and a second glue coating; the first glue coating is prepared by the following steps: mixing the components of the first glue layer, wherein the second glue coating is prepared by the following steps: mixing the components of the second glue layer to obtain the glue;
coating transfer paint on a first base film, forming a first holographic laser pattern through laser mould pressing, and then performing vacuum aluminum plating or vacuum inorganic medium layer plating on the first holographic laser pattern to obtain a first transfer film containing a first holographic laser layer; coating transfer paint on a second base film, forming a second holographic laser pattern through laser mould pressing, and performing vacuum aluminum plating on the second holographic laser pattern to obtain a second transfer film containing a second holographic laser layer;
compounding the first transfer film with the first holographic laser layer and the paper base layer through the first glue coating, drying to form a first glue layer, and removing the first base film;
and compounding the second transfer film with the second holographic laser layer and the first holographic laser layer through the second glue coating, drying to form a second glue layer, and removing the second base film to obtain the holographic anti-counterfeiting laser transfer paper.
2. The preparation method of the holographic anti-counterfeiting laser transfer paper as claimed in claim 1, further comprising the steps of forming a surface varnish layer on the surface of the second holographic laser layer, cooling and rolling.
3. The method for preparing holographic anti-counterfeiting laser transfer paper as claimed in claim 1 or 2, further comprising the step of forming a back coating layer on the paper substrate on the side opposite to the first glue layer after forming the second glue layer and before removing the second base film.
4. The preparation method of the holographic anti-counterfeiting laser transfer paper as claimed in claim 1, wherein in the first glue layer, 60-80 parts of propyl benzene emulsion, 3-8 parts of cationic starch and 3-8 parts of polyvinyl alcohol are used.
5. The method for preparing holographic anti-counterfeiting laser transfer paper according to claim 4, wherein 65 parts of propyl benzene emulsion, 5 parts of cationic starch and 3 parts of polyvinyl alcohol are contained in the first glue layer.
6. The preparation method of the holographic anti-counterfeiting laser transfer paper as claimed in any one of claims 4 to 5, wherein in the second glue layer, 50 to 60 parts of the butylbenzene emulsion, 5 to 8 parts of polyoxyethylene and 5 to 8 parts of polyethylene glycol are used.
7. The preparation method of holographic anti-counterfeiting laser transfer paper as claimed in claim 6, wherein in the second glue layer, 55 parts of styrene-butadiene emulsion, 5 parts of polyethylene oxide and 8 parts of polyethylene glycol are used.
8. The preparation method of the holographic anti-counterfeiting laser transfer paper as claimed in any one of claims 4 to 5, wherein the holographic anti-counterfeiting laser transfer paper further comprises a surface varnish layer, and the surface varnish layer is arranged on the surface of the second holographic laser layer.
9. The preparation method of the holographic anti-counterfeiting laser transfer paper as claimed in any one of claims 4 to 5, wherein the holographic anti-counterfeiting laser transfer paper further comprises a back coating layer, and the back coating layer is arranged on one side of the paper base layer opposite to the first glue layer.
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| CN111295290B (en) * | 2018-07-30 | 2022-03-01 | 大日本印刷株式会社 | Thermal transfer sheet |
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| CN106192562A (en) * | 2016-07-26 | 2016-12-07 | 常德市金润新材料科技有限公司无锡新材料研究院 | A kind of perfuming laser paper |
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