CN110920285A - Secondary positioning overprinting process for transfer paper and product thereof - Google Patents

Secondary positioning overprinting process for transfer paper and product thereof Download PDF

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Publication number
CN110920285A
CN110920285A CN201911203035.4A CN201911203035A CN110920285A CN 110920285 A CN110920285 A CN 110920285A CN 201911203035 A CN201911203035 A CN 201911203035A CN 110920285 A CN110920285 A CN 110920285A
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China
Prior art keywords
holographic
positioning
film
counterfeiting
paper
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Withdrawn
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CN201911203035.4A
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Chinese (zh)
Inventor
汤炼
胡方斌
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HUBEI XINGLONG PACKAGING MATERIAL CO Ltd
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HUBEI XINGLONG PACKAGING MATERIAL CO Ltd
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Priority to CN201911203035.4A priority Critical patent/CN110920285A/en
Publication of CN110920285A publication Critical patent/CN110920285A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/14Security printing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00Duplicating or marking methods; Sheet materials for use therein

Abstract

The invention relates to the technical field of holographic anti-counterfeiting printing, in particular to a secondary positioning overprinting process for transfer paper, and provides a secondary positioning holographic anti-counterfeiting printing method and secondary positioning holographic anti-counterfeiting printing paper for manufacturing a plurality of patterns with different anti-counterfeiting characters and shapes and accurately ensuring the position and the size among the patterns, wherein the secondary positioning holographic anti-counterfeiting printing method is used for printing the patterns on the paper by using ink patterns and holographic patterns according to the design requirement, so that the whole surface of the packing paper is provided with the anti-counterfeiting characters and the patterns, and the method comprises the following steps: the method comprises the steps of holographic pattern positioning design, variable table compiling, positioning precision requirement revising, precise plate making, electroforming, film coating control, precise transfer, mold pressing parameter precise control, paper film compounding and surface PET film stripping, the novel secondary positioning holographic anti-counterfeiting type environment-friendly paper is manufactured, full-plate holographic patterns are formed, patterns can be printed on a printing machine by taking the full-plate holographic patterns as a base material through positioning, the gold stamping process is reduced, the cost is saved, the anti-counterfeiting performance is improved, the grade of printed products is improved, and the method is energy-saving and environment-friendly.

Description

Secondary positioning overprinting process for transfer paper and product thereof
Technical Field
The invention relates to the technical field of holographic anti-counterfeiting printing, in particular to a secondary positioning overprinting process for transfer paper and a product thereof.
Background
The paper in the prior art is of various varieties, various novel special papers are also numerous, and the paper with holographic anti-counterfeiting patterns is also widely applied, but with the continuous development of holographic anti-counterfeiting technology, people have realized the holographic anti-counterfeiting manufacturing methods of invisible encryption technology, fluorescent encryption holographic technology and the like, which have the characteristics of clear images, gorgeous colors and strong three-dimensional sense, but the manufacturing difficulty of anti-counterfeiting products is increasing, and in order to achieve the purposes, make the products beautiful and difficult to forge, people often design more various complicated holographic patterns, and adopt a method of plate splicing and transfer to realize large-area transfer, but the large-area transfer is realized by only combining continuous single patterns, has the large-area transfer with a certain effect characteristic, but cannot realize the large-area transfer of patterns with different anti-counterfeiting characters and shapes, And a plurality of patterns of which the position size among the patterns needs to be precisely ensured are printed on the printing machine in a positioning way by using the ink patterns and the holographic patterns according to the design requirements, so that the precise positioning printing is difficult to realize, namely, the precise setting can not be carried out on each printing element, the printing elements related to different patterns, different colors, different positions, mutual position relations and the like. The positioning concept in the prior art is the mutual positioning of different colors and different patterns of printed ink, and is the mutual positioning of patterns and shapes of printed and common holographic paper, and the comprehensive integral positioning of multiple printing elements is difficult to realize due to technical problems; the holographic printing technology is difficult to manufacture more abundant products due to the defects, and the problem that the secondary positioning overprinting technology for the transfer paper and the secondary positioning holographic anti-counterfeiting paper manufactured by the secondary positioning holographic anti-counterfeiting printing technology are urgently needed to be solved by engineering technicians is solved; whether a piece of paper is on a precise position, has N different laser holographic effect patterns and contains paper printed by a printing machine with superposed delicate patterns is determined, so that the problems that the concept of making one piece of holographic paper by one pattern in the whole edition in the prior production technology is limited, the defect of difficulty in multiple precise positioning and transfer on the paper is overcome, and the production of printing paper with large breadth, high precision and high quality is urgently needed to be solved by engineering technicians are solved; the prior art also does not see the case of the transferred sheets of the present invention.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a secondary positioning overprinting process for transfer paper and secondary positioning holographic anti-counterfeiting printing paper for the secondary positioning overprinting process, which are used for manufacturing a plurality of patterns with different anti-counterfeiting characters and shapes and accurately ensuring the position and the size among the patterns, and printing the patterns on the paper by using ink patterns and holographic patterns according to the design requirements, so that the whole surface of the packaging paper is provided with the anti-counterfeiting characters and the patterns.
The purpose of the invention is achieved by the following technical scheme:
the invention relates to a secondary positioning overprinting process for transfer paper, which comprises the following specific steps:
the first step is as follows: positioning and designing the holographic pattern: separating various requirements of the holographic printing pre-transfer paper according to the packaging and anti-counterfeiting requirements required by a client, and designing design file manuscripts containing different holographic patterns, different holographic optical variable effects, different distance requirements and different position relations;
the second step is that: designing a holographic pattern according to the design file draft, wherein the designed holographic pattern comprises a positioning origin, trimming, transverse and longitudinal alignment, a tracking line and cursor alignment reference used in film making, paper making and printing;
the third step: compiling a production whole process variable condition table, and revising the positioning precision requirement of each technological process;
the fourth step: precise plate making: the method comprises the following steps of manufacturing a holographic plate according to a design scheme, wherein the holographic plate is a combination of various patterns, controlling the accurate positioning of each pattern, accurately fixing the distance between the patterns to ensure the anti-counterfeiting effect and ensure that the relative position of the holographic plate is consistent with the design, meeting the requirement on the precision of plate splicing equipment, adopting a precision lead screw to walk by a plate splicing machine to realize accurate movement to finish plate splicing, ensuring that the deformation rate of a plate splicing base material is less than 0.5mm/m, ensuring the accurate reference positioning of each plate and each pattern, setting the positioning original point of each pattern during plate making, repeatedly applying the original point during combination, realizing the positioning plate splicing, and specifying an overprinting rule during holographic anti-counterfeiting paper printing while positioning the plate making to finish the manufacturing of a high-precision plate;
the fifth step: electroforming to make the holographic plate into a metal template capable of being transferred repeatedly;
and a sixth step: controlling a film coating process: presetting the film, setting corresponding parameters on a coating machine according to the temperature and tension parameters of the PET film in the production and stretching process to enable the PET film to rebound in a natural state, and carrying out secondary setting treatment, wherein a high-molecular resin mixture with high transparency, good thermoplasticity, good weather resistance and strong folding resistance is used as a coating material, so that the direct printing of printing ink on the coating can be realized, the mutual crosslinking reaction process of the film substrate of the coating is effectively reduced, and the separation of the film substrate in a later process link is facilitated to obtain a clear image;
the seventh step: precision transfer: positioning mould pressing is carried out to meet the precision requirement;
a. adopting a method of transferring to a film substrate at a low temperature, wherein the transfer temperature is set to be lower than the vitrification TG point of the PET substrate;
b. controlling the relative positioning of the molded die and the film;
c. controlling the deformation of the film before and after die pressing to realize positioning transfer;
eighth step: and (3) precise control of parameters of a mould pressing process:
a. when the plate is molded, the automatic distance control is carried out on the molding equipment, the size of each plate distance is measured, the tension of the stretched film is automatically corrected, the deformation is controlled and corrected by the tension of the film, the molding temperature is constant, the tension and the stability are ensured in the molding coating link, and the constant temperature is added to realize the precise transfer;
b. the mould pressing machine is controlled in the mechanical aspect, and through the selection of the diameter of the plate roller and the diameter proportional relation matching of the plate roller and the rubber roller, the minimum mould pressing deformation is ensured while the enough mould pressing pressure is ensured, and the optimal balance point is reached;
c. stabilizing the change state of the deformation of the film according to the characteristics of the PET and the deformation variable quantity parameters of the PET, meeting the requirement of continuous printing production and preparing the holographic anti-counterfeiting film;
the ninth step: compounding paper films: stretching paper and a holographic anti-counterfeiting film at a fixed length, compounding the paper and the holographic anti-counterfeiting film through water-based adhesive glue, drying at a low temperature, compensating water lost by the paper due to drying, fully cooling in a uniform state by adopting cooling core control, and adjusting the tension of the holographic anti-counterfeiting film through online plate spacing detection and a feedback system to ensure the uniformity of the plate spacing so as to meet the overprinting requirement in the process;
the tenth step: and stripping the PET film on the surface to obtain the secondary positioning holographic anti-counterfeiting printing paper meeting the requirements.
The invention relates to a secondary positioning overprinting process for transfer paper, which comprises the following steps: in the seventh step, the method of transferring to the substrate at low temperature can be replaced by transferring to the substrate by using a UV glue, wherein the UV glue is: UV glue with high speed photo-curing.
The invention relates to a secondary positioning overprinting process for transfer paper, which comprises the following steps: in the sixth step, the film pre-setting treatment is that in the positioning die pressing, the deformation of the PET film formed by biaxial stretching is large when the PET film is subjected to hot die pressing, and the method for accurately positioning the PET as the positioned material comprises the following steps: the high-temperature shaping is carried out on a coating machine, the temperature is accurately aligned with the temperature of the PET vitrification point, the temperature is accurately controlled within the range of the temperature of the vitrification point, and the shrinkage natural deformation generated by the PET vitrification point is controlled under the conditions of the vitrification temperature and certain tension.
The invention relates to a secondary positioning overprinting process for transfer paper, which comprises the following steps: the holographic anti-counterfeiting film comprises: the universal holographic anti-counterfeiting film, the encrypted holographic anti-counterfeiting film and the special holographic anti-counterfeiting film can be any one.
The invention relates to a secondary positioning holographic anti-counterfeiting printing paper manufactured by the secondary positioning overprinting process of transfer paper, which comprises the following steps: the paper made by the method is a printing paper with full-page holographic anti-counterfeiting patterns, the patterns are holographic patterns with various holographic anti-counterfeiting effects in a positioning relationship, the printing paper is used as a base material, a printer is used for printing the patterns on the printing paper again in a positioning manner by adopting a post-printing process, the positioning is called as secondary positioning, and the secondary positioning holographic anti-counterfeiting printing paper is formed by precisely setting, precisely positioning and printing the printing elements which are in one-to-one correspondence with the printing elements and the holographic elements, comprise the pattern elements, the color elements, the position dimension elements and the mutual position relationship elements and are related to each other into the base material.
The invention has the following remarkable advantages: the invention aims to endow holographic anti-counterfeiting printing paper with new definition through a secondary positioning concept, so that the secondary positioning not only comprises the mutual positioning between printing ink on the paper, but also comprises the positioning of holographic patterns formed by the secondary positioning concept, namely the positioning formed between the printing patterns and a plurality of positioned holographic patterns on the paper, the appearance is excellent, the accurate positioning and the high-precision printing are realized, the paper is not limited by the size of a plate, is novel anti-counterfeiting type environment-friendly paper, namely the printed large paper is provided with full-page holographic patterns, and can be used as a base material on a printing machine to perform positioning other pattern printing, the development and evolution of the technology can change the defects of the existing products from printing on the paper with the holographic patterns to positioning printing on the paper with the holographic patterns at one time to positioning a plurality of papers with the holographic patterns, and the anti-counterfeiting performance is improved, the grade of the printed matter is improved, the printed matter is more energy-saving and environment-friendly, and the production efficiency and the anti-counterfeiting effect are all leaps;
1) the present invention expands the anti-fake film products, such as anti-fake mark, pull string, laser film, etc. to paper, and makes the packing paper possess anti-fake characters and patterns on the surface and thus has greatly raised fake difficulty.
2) The invention saves cost and reduces the gold stamping process of a printing factory.
3) The paper product produced by the invention can be naturally degraded and recycled, and is different from aluminum foil composite paper and laminating paperboard which pollute the environment because the aluminum foil composite paper and the laminating paperboard can not be recovered and degraded.
4) The secondary positioning holographic anti-counterfeiting printing paper does not affect the surface printing of the paper, can be perfectly fused with printing ink and mutually mapped, and achieves an ideal overall decoration effect.
The specific implementation mode is as follows:
the present invention will be described in detail with reference to specific embodiments below:
the invention relates to a secondary positioning overprinting process for transfer paper, which is used for manufacturing a plurality of patterns with different anti-counterfeiting characters and shapes, wherein the position and the size among the patterns are precisely ensured, the patterns are positioned and printed on the paper by using ink patterns and holographic patterns according to the design requirement, and the whole surface of packaging paper is provided with the anti-counterfeiting characters and the patterns.
The method comprises the following specific steps:
the first step is as follows: positioning and designing the holographic pattern: separating various requirements of the holographic printing pre-transfer paper according to the packaging and anti-counterfeiting requirements required by a client, and designing design file manuscripts containing different holographic patterns, different holographic optical variable effects, different distance requirements and different position relations;
the second step is that: designing a holographic pattern according to the design file draft, wherein the designed holographic pattern comprises a positioning origin, trimming, transverse and longitudinal alignment, a tracking line and cursor alignment reference used in film making, paper making and printing;
the third step: compiling a production whole process variable condition table, and revising the positioning precision requirement of each technological process;
the fourth step: precise plate making: the method comprises the following steps of manufacturing a holographic plate according to a design scheme, wherein the holographic plate is a combination of various patterns, the accurate positioning of each pattern is controlled, the distance between the patterns is accurately fixed so as to ensure the anti-counterfeiting effect and enable the relative position of the patterns to be consistent with the design, the precision of the plate splicing equipment is required, the plate splicing machine walks by adopting a precision screw rod, and the plate splicing machine walks by adopting a precision screw rod with the precision of 0.005mm, so that the precise movement is realized to finish the plate splicing; the deformation rate of the makeup base material is required to be less than 0.5mm/m, the reference positioning of each plate and each pattern is accurate, the positioning original point of each pattern is set during plate making, the original points are repeatedly used in combination, the positioning makeup is realized, the overprinting gauge line during holographic anti-counterfeiting paper printing is specified during the positioning plate making, and the manufacturing of the high-precision plate is completed;
the fifth step: electroforming to make the holographic plate into a metal template capable of being transferred repeatedly;
and a sixth step: controlling a film coating process: presetting the film, setting corresponding parameters on a coating machine according to the temperature and tension parameters of the PET film in the production and stretching process to enable the PET film to rebound in a natural state, and carrying out secondary setting treatment, wherein a high-molecular resin mixture with high transparency, good thermoplasticity, good weather resistance and strong folding resistance is used as a coating material, so that the direct printing of printing ink on the coating can be realized, the mutual crosslinking reaction process of the film substrate of the coating is effectively reduced, and the separation of the film substrate in a later process link is facilitated to obtain a clear image;
in the sixth step, the film is pre-shaped, in the positioning die pressing, the deformation of the PET film formed by biaxial stretching is large when the PET film is subjected to hot die pressing, and the method for accurately positioning the PET as the positioned material comprises the following steps: performing high-temperature shaping on a coating machine, precisely aligning the temperature to the temperature of a PET vitrification point, precisely controlling the temperature within the range of the vitrification point, and controlling the generated shrinkage natural deformation under the conditions of the vitrification temperature and certain tension;
the seventh step: precision transfer: positioning mould pressing is carried out to meet the precision requirement;
a. adopting a method of transferring to a film substrate at a low temperature, wherein the transfer temperature is set to be lower than the vitrification TG point of the PET substrate; the low-temperature transfer printing can be replaced by transferring the UV glue to the base material, wherein the UV glue is UV glue with high-speed photocuring;
b. controlling the relative positioning of the molded die and the film;
c. controlling the deformation of the film before and after die pressing to realize positioning transfer;
eighth step: and (3) precise control of parameters of a mould pressing process:
a. when the plate is molded, the automatic distance control is carried out on the molding equipment, the size of each plate distance is measured, the tension of the stretched film is automatically corrected, the deformation is controlled and corrected by the tension of the film, the molding temperature is constant, the tension and the stability are ensured in the molding coating link, and the constant temperature is added to realize the precise transfer;
b. the mould pressing machine is controlled in the mechanical aspect, and through the selection of the diameter of the plate roller and the diameter proportional relation matching of the plate roller and the rubber roller, the minimum mould pressing deformation is ensured while the enough mould pressing pressure is ensured, and the optimal balance point is reached;
c. stabilizing the change state of the deformation of the film according to the characteristics of the PET and the deformation variable quantity parameters of the PET, meeting the requirement of continuous printing production and preparing the holographic anti-counterfeiting film;
the ninth step: compounding paper films: stretching paper and a holographic anti-counterfeiting film at a fixed length, compounding the paper and the holographic anti-counterfeiting film through water-based adhesive glue, drying at a low temperature, compensating water lost by the paper due to drying, fully cooling in a uniform state by adopting cooling core control, and adjusting the tension of the holographic anti-counterfeiting film through online plate spacing detection and a feedback system to ensure the uniformity of the plate spacing so as to meet the overprinting requirement in the process;
the tenth step: and stripping the PET film on the surface to obtain the secondary positioning holographic anti-counterfeiting printing paper meeting the requirements.
The holographic anti-counterfeiting film comprises: the universal holographic anti-counterfeiting film, the encrypted holographic anti-counterfeiting film and the special holographic anti-counterfeiting film can be used.
The paper made by the method is a printing paper with full-page holographic anti-counterfeiting patterns, the patterns are holographic patterns with various holographic anti-counterfeiting effects in a positioning relationship, the printing paper is used as a base material, a printer is used for printing the patterns on the printing paper again in a positioning manner by adopting a post-printing process, the positioning is called as secondary positioning, and the secondary positioning holographic anti-counterfeiting printing paper is formed by precisely setting, precisely positioning and printing the printing elements which are in one-to-one correspondence with the printing elements and the holographic elements, comprise the pattern elements, the color elements, the position dimension elements and the mutual position relationship elements and are related to each other into the base material. The secondary positioning holographic anti-counterfeiting printing paper manufactured by the invention can be used as a base material to print exquisite patterns again, and can also be directly used as high-grade packaging paper.
The invention provides a secondary positioning overprinting process for transfer paper, which is used for manufacturing a plurality of patterns with different anti-counterfeiting characters and shapes and accurately ensuring the position size among the patterns, printing the patterns on the paper by using ink patterns and holographic patterns according to design requirements and enabling the whole surface of packaging paper to be provided with the anti-counterfeiting characters and the patterns, and simultaneously producing secondary positioning holographic anti-counterfeiting printing paper, wherein the holographic anti-counterfeiting printing paper can be used as a base material to be accurately positioned and printed on a large paper again on a printing machine, the secondary positioning holographic anti-counterfeiting printing paper is novel environment-friendly anti-counterfeiting paper without a plastic film, positioning is to design and manufacture laser patterns with fixed positions and special-effect optically variable patterns on the paper before printing, and the optically variable patterns are accurately printed in register with the ink patterns during printing, so that special printing effects and safety anti-counterfeiting characteristics which cannot be obtained on the traditional printing paper can be obtained, the secondary positioning holographic anti-counterfeiting printing paper belongs to image processing before printing, combines the design of printing patterns, and can be used for high-precision printing of large-page, multi-pattern and multi-position relation patterns, meet the increasingly complex requirements of holographic manufacturing process, improve anti-counterfeiting strength, and produce various optical laser effects (semi-invisible, positioning laser gold stamping, optical color changing, invisible encryption, micro characters, laser gold stamping and the like).

Claims (4)

1. A secondary positioning overprinting process for transfer paper is characterized by comprising the following specific steps:
the first step is as follows: positioning and designing the holographic pattern: separating various requirements of the holographic printing pre-transfer paper according to the packaging and anti-counterfeiting requirements required by a client, and designing design file manuscripts containing different holographic patterns, different holographic optical variable effects, different distance requirements and different position relations;
the second step is that: designing a holographic pattern according to the design file draft, wherein the designed holographic pattern comprises a positioning origin, trimming, transverse and longitudinal alignment, a tracking line and cursor alignment reference used in film making, paper making and printing;
the third step: compiling a production whole process variable condition table, and revising the positioning precision requirement of each technological process;
the fourth step: precise plate making: the method comprises the following steps of manufacturing a holographic plate according to a design scheme, wherein the holographic plate is a combination of various patterns, controlling the accurate positioning of each pattern, accurately fixing the distance between the patterns to ensure the anti-counterfeiting effect and ensure that the relative position of the holographic plate is consistent with the design, meeting the requirement on the precision of plate splicing equipment, adopting a precision lead screw to walk by a plate splicing machine to realize accurate movement to finish plate splicing, ensuring that the deformation rate of a plate splicing base material is less than 0.5mm/m, ensuring the accurate reference positioning of each plate and each pattern, setting the positioning original point of each pattern during plate making, repeatedly applying the original point during combination, realizing the positioning plate splicing, and specifying an overprinting rule during holographic anti-counterfeiting paper printing while positioning the plate making to finish the manufacturing of a high-precision plate;
the fifth step: electroforming to make the holographic plate into a metal template capable of being transferred repeatedly;
and a sixth step: controlling a film coating process: presetting the film, setting corresponding parameters on a coating machine according to the temperature and tension parameters of the PET film in the production and stretching process to enable the PET film to rebound in a natural state, and carrying out secondary setting treatment, wherein a high-molecular resin mixture with high transparency, good thermoplasticity, good weather resistance and strong folding resistance is used as a coating material, so that the direct printing of printing ink on the coating can be realized, the mutual crosslinking reaction process of the film substrate of the coating is effectively reduced, and the separation of the film substrate in a later process link is facilitated to obtain a clear image;
the seventh step: precision transfer: positioning mould pressing is carried out to meet the precision requirement;
a. adopting a method of transferring to a film substrate at a low temperature, wherein the transfer temperature is set to be lower than the vitrification TG point of the PET substrate;
b. controlling the relative positioning of the molded die and the film;
c. controlling the deformation of the film before and after die pressing to realize positioning transfer;
eighth step: and (3) precise control of parameters of a mould pressing process:
a. when the plate is molded, the automatic distance control is carried out on the molding equipment, the size of each plate distance is measured, the tension of the stretched film is automatically corrected, the deformation is controlled and corrected by the tension of the film, the molding temperature is constant, the tension and the stability are ensured in the molding coating link, and the constant temperature is added to realize the precise transfer;
b. the mould pressing machine is controlled in the mechanical aspect, and through the selection of the diameter of the plate roller and the diameter proportional relation matching of the plate roller and the rubber roller, the minimum mould pressing deformation is ensured while the enough mould pressing pressure is ensured, and the optimal balance point is reached;
c. stabilizing the change state of the deformation of the film according to the characteristics of the PET and the deformation variable quantity parameters of the PET, meeting the requirement of continuous printing production and preparing the holographic anti-counterfeiting film;
the ninth step: compounding paper films: stretching paper and a holographic anti-counterfeiting film at a fixed length, compounding the paper and the holographic anti-counterfeiting film through water-based adhesive glue, drying at a low temperature, compensating water lost by the paper due to drying, fully cooling in a uniform state by adopting cooling core control, and adjusting the tension of the holographic anti-counterfeiting film through online plate spacing detection and a feedback system to ensure the uniformity of the plate spacing so as to meet the overprinting requirement in the process;
the tenth step: and stripping the PET film on the surface to obtain the secondary positioning holographic anti-counterfeiting printing paper meeting the requirements.
2. The process for secondary positioning overprinting of transfer paper according to claim 1, wherein: in the seventh step, the method of transferring to the substrate at low temperature can be replaced by transferring to the substrate by using a UV glue, wherein the UV glue is: UV glue with high speed photo-curing.
3. The process for secondary positioning overprinting of transfer paper according to claim 1, wherein: in the sixth step, the film pre-setting treatment is performed because the PET film biaxially stretched in the orientation molding is deformed to a large extent when it is subjected to hot molding, and therefore the method for accurately positioning PET as a material to be positioned in the sixth step is as follows: the high-temperature shaping is carried out on a coating machine, the temperature is accurately aligned with the temperature of the PET vitrification point, the temperature is accurately controlled within the range of the temperature of the vitrification point, and the shrinkage natural deformation generated by the PET vitrification point is controlled under the conditions of the vitrification temperature and certain tension.
4. The process for secondary positioning overprinting of transfer paper according to claim 1, wherein: the holographic anti-counterfeiting film comprises: the universal holographic anti-counterfeiting film, the encrypted holographic anti-counterfeiting film and the special holographic anti-counterfeiting film can be any one.
CN201911203035.4A 2019-11-29 2019-11-29 Secondary positioning overprinting process for transfer paper and product thereof Withdrawn CN110920285A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112644152A (en) * 2020-12-18 2021-04-13 武汉华工图像技术开发有限公司 Method for manufacturing holographic frame paper
CN112790474A (en) * 2020-12-24 2021-05-14 晋江邦兴达鞋材有限公司 Processing technology of vamp printing

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112644152A (en) * 2020-12-18 2021-04-13 武汉华工图像技术开发有限公司 Method for manufacturing holographic frame paper
CN112790474A (en) * 2020-12-24 2021-05-14 晋江邦兴达鞋材有限公司 Processing technology of vamp printing
CN112790474B (en) * 2020-12-24 2022-02-08 晋江邦兴达鞋材有限公司 Processing technology of vamp printing

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