CN108859461B - Preparation method of TPU (thermoplastic polyurethane) grating composite film with 2D (two-dimensional) anti-counterfeiting pattern - Google Patents
Preparation method of TPU (thermoplastic polyurethane) grating composite film with 2D (two-dimensional) anti-counterfeiting pattern Download PDFInfo
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- CN108859461B CN108859461B CN201810571207.2A CN201810571207A CN108859461B CN 108859461 B CN108859461 B CN 108859461B CN 201810571207 A CN201810571207 A CN 201810571207A CN 108859461 B CN108859461 B CN 108859461B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/26—Printing on other surfaces than ordinary paper
- B41M1/30—Printing on other surfaces than ordinary paper on organic plastics, horn or similar materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
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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
- B41M5/382—Contact thermal transfer or sublimation processes
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/18—Diffraction gratings
- G02B5/1847—Manufacturing methods
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Abstract
The invention discloses a preparation method of a TPU grating composite film with a 2D anti-counterfeiting pattern, which comprises the steps of preparing a PP/TPU grating film, designing a grating pattern, laminating and imaging the grating film and applying the process. The prepared grating film keeps the excellent wear-resisting, ageing-resisting, waterproof and moisture-permeable properties of TPU, can be directly applied to fabrics such as shoe materials, clothes and the like through a seamless hot-pressing process, does not need knitting, and is concise and attractive in finished products. Meanwhile, the dynamic patterns improve the fashion of decoration and also increase the characteristics of the commodities and the anti-counterfeiting protection function. The PP/TPU grating composite film is produced by casting by utilizing the reverse grating plate roller, and the application requirements of grating film printing machine and seamless hot pressing process are met by compounding PP paper.
Description
Technical Field
The invention relates to a preparation method of a TPU grating composite film with a 2D anti-counterfeiting pattern, and belongs to the technical field of TPU film printing.
Background
The grating soft rubber not only has better dynamic stereoscopic vision effect, improves the originality of commodity images, but also has certain anti-counterfeiting function, increases multiple added values of packaged products, and has very wide application field. In recent years, the domestic grating film market has been greatly developed. A batch of well-known stereoscopic printing enterprises, such as Shenzhen super image technology Limited, Guangzhou Union Kai three-dimensional image design Limited, have exploited the grating soft rubber, and have been exploited by handbag, packaging industries to move to the bag, hat and shoe industries.
In the stereo printing technology, the application of the grating soft rubber is a more successful one. The hot-press forming process is mainly adopted, and generally, the special process treatment is carried out on paper, then grating patterns are printed on the paper by a printer, and then PVC or TPU soft rubber is mounted on the paper and then the paper is hot-press formed by a grating mold. The invention patent of a publication number "CN 201710266181.6", named 3D grating soft rubber printing process, applied by Fuchen packaging product Limited company in Guangzhou city in 2017, wherein the grating soft rubber process described by the invention comprises the following specific steps: firstly, printing a thermal transfer printing release oil layer on coated paper; silk-screening a first white ink coating on the thermal transfer printing release oil layer; printing multi-angle dynamic patterns/patterns on the first white ink coating by using a hot stamping method; covering PVC and TPU soft rubber films on the multi-angle dynamic patterns/patterns; hot-pressing the semi-finished product obtained in the previous step by using a grating mold to form grating patterns on the soft adhesive film, wherein the multi-angle dynamic patterns/patterns show a 3D (three-dimensional) effect; and stripping the coated paper, and then silk-screening a second white ink coating to obtain a printed matter with the 3D stereoscopic effect.
The stereo printing technology is mainly mastered by printing enterprises, but the printing enterprises still have a lack of understanding about the production and application technology of TPU, and most of the image designs can only make stereo pictures with the defect of specific viewing angles. Therefore, the grating soft glue process still has a larger innovative and improved space. The realization of the UV direct printing of the grating soft rubber, the jump-free design of the image and the sewing-free application of the grating soft rubber are important ways for improving the market competitiveness of the grating soft rubber.
Disclosure of Invention
Aiming at the problems existing in the grating soft rubber process at present, the invention utilizes the PP/TPU grating composite film to cover and combine the grating pattern with no jump design to manufacture the 2D TPU grating composite film. The specific scheme is as follows:
a preparation method of a TPU grating composite film with a 2D anti-counterfeiting pattern comprises the following steps:
1) preparing a PP/TPU grating film: the method for preparing the PP/TPU grating film is one of two production processes, wherein the two production processes are respectively as follows: preparing a PP/TPU grating film through a hard plastic grating sheet and preparing the PP/TPU grating film through a metal grating roller;
2) designing a grating pattern: carrying out pattern application design according to the arrangement rules of convex lenses of different grating types to manufacture a non-hopping anti-counterfeiting pattern;
3) and (3) grating film lamination imaging: the method for laminating and imaging the grating film is one of two processes, wherein the two processes comprise a UV printing imaging process and an electrochemical aluminum transfer imaging process;
the UV printing imaging process comprises the following steps:
a. cutting the PP/TPU grating film according to the requirements of the specifications on the machine;
b. directly forming an image on the back of the PP/TPU grating film through UV printing;
the electrochemical aluminum transfer printing imaging process comprises the following steps:
a. carving a grating pattern on the electrochemical aluminum material by an ultraviolet laser marking machine, wherein the marking speed is 1000 mm/s;
b. transferring the electrochemical aluminum pattern to the back of a PP/TPU grating film for imaging through a transfer printing process;
4) the application process comprises the following steps: and (3) carrying out high-frequency hot pressing on the PP/TPU grating film on fabrics such as shoe materials, clothes and the like, and tearing off the composite PP paper to obtain the TPU grating composite film with the 2D anti-counterfeiting pattern.
Further, the process for preparing the PP/TPU grating film by the hard plastic grating sheet comprises the following steps:
a. copying the hard plastic grating sheet by an electroforming process to prepare a reverse grating nickel plate;
b. installing the grating nickel plate on a roller of a tape casting production machine;
c. through a casting production line, carrying out melt casting on a PP raw material to the surface of a grating nickel plate roller for cooling and shaping, and preparing PP paper with regularly arranged lenses on the surface;
d. and (3) casting and compounding TPU on the PP paper again to obtain the PP/TPU grating film.
Further, the process for preparing the PP/TPU grating film by the metal grating roller comprises the following steps:
a. processing a reverse metal grating roller with lenses arranged according to a specific rule by high-precision laser engraving equipment according to the number of grating lines required by production;
b. mounting the metal grating roller on a casting production machine;
c. through a casting production line, carrying out melt casting on a PP raw material to the surface of a metal grating roller for cooling and shaping, and preparing PP paper with regularly arranged lenses on the surface;
d. and (3) casting and compounding TPU on the PP paper again to obtain the PP/TPU grating film.
The invention has the beneficial effects that:
1. the prepared grating film keeps the excellent wear-resisting, ageing-resisting, waterproof and moisture-permeable properties of TPU, can be directly applied to fabrics such as shoe materials, clothes and the like through a seamless hot-pressing process, does not need knitting, and is concise and attractive in finished products. Meanwhile, the dynamic patterns improve the fashion of decoration and also increase the characteristics of the commodities and the anti-counterfeiting protection function.
2. The PP/TPU grating composite film is produced by casting by utilizing the reverse grating plate roller, and the application requirements of grating film printing machine and seamless hot pressing process are met by compounding PP paper.
Drawings
FIG. 1 is a schematic process flow diagram of a preparation method of a TPU grating composite film with a 2D anti-counterfeiting pattern in the invention.
Detailed Description
The invention provides a preparation method of a TPU grating composite film with a 2D anti-counterfeiting pattern, which is described in detail by combining an embodiment:
example 1
1) Preparing a PP/TPU grating film: the method for preparing the PP/TPU grating film comprises the steps of preparing the PP/TPU grating film through a hard plastic grating sheet;
the process for preparing the PP/TPU grating film by the hard plastic grating sheet comprises the following steps:
a. copying the hard plastic grating sheet by an electroforming process to prepare a reverse grating nickel plate;
b. installing the grating nickel plate on a roller of a tape casting production machine;
c. through a casting production line, carrying out melt casting on a PP raw material to the surface of a grating nickel plate roller for cooling and shaping, and preparing PP paper with regularly arranged lenses on the surface;
d. carrying out tape casting on the PP paper again to compound TPU to obtain a PP/TPU grating film;
2) designing a grating pattern: carrying out pattern application design according to the arrangement rules of convex lenses of different grating types to manufacture a non-hopping anti-counterfeiting pattern;
3) and (3) grating film lamination imaging: the method for laminating and imaging the grating film is a UV printing imaging process;
the UV printing imaging process comprises the following steps:
a. cutting the PP/TPU grating film according to the requirements of the specifications on the machine;
b. directly forming an image on the back of the PP/TPU grating film through UV printing;
4) the application process comprises the following steps: and (3) carrying out high-frequency hot pressing on the PP/TPU grating film on fabrics such as shoe materials, clothes and the like, and tearing off the composite PP paper to obtain the TPU grating composite film with the 2D anti-counterfeiting pattern.
Example 2
1) Preparing a PP/TPU grating film: the method for preparing the PP/TPU grating film comprises the steps of preparing the PP/TPU grating film through a hard plastic grating sheet;
the process for preparing the PP/TPU grating film by the hard plastic grating sheet comprises the following steps:
a. copying the hard plastic grating sheet by an electroforming process to prepare a reverse grating nickel plate;
b. installing the grating nickel plate on a roller of a tape casting production machine;
c. through a casting production line, carrying out melt casting on a PP raw material to the surface of a grating nickel plate roller for cooling and shaping, and preparing PP paper with regularly arranged lenses on the surface;
d. carrying out tape casting on the PP paper again to compound TPU to obtain a PP/TPU grating film;
2) designing a grating pattern: carrying out pattern application design according to the arrangement rules of convex lenses of different grating types to manufacture a non-hopping anti-counterfeiting pattern;
3) and (3) grating film lamination imaging: the method for laminating and imaging the grating film is an electrochemical aluminum transfer imaging process;
the electrochemical aluminum transfer printing imaging process comprises the following steps:
a. carving a grating pattern on the electrochemical aluminum material by an ultraviolet laser marking machine, wherein the marking speed is 1000 mm/s;
b. transferring the electrochemical aluminum pattern to the back of a PP/TPU grating film for imaging through a transfer printing process;
4) the application process comprises the following steps: and (3) carrying out high-frequency hot pressing on the PP/TPU grating film on fabrics such as shoe materials, clothes and the like, and tearing off the composite PP paper to obtain the TPU grating composite film with the 2D anti-counterfeiting pattern.
Example 3
1) Preparing a PP/TPU grating film: the method for preparing the PP/TPU grating film comprises the steps of preparing the PP/TPU grating film through a metal grating roller;
the process for preparing the PP/TPU grating film by the metal grating roller comprises the following steps:
a. processing a reverse metal grating roller with lenses arranged according to a specific rule by high-precision laser engraving equipment according to the number of grating lines required by production;
b. mounting the metal grating roller on a casting production machine;
c. through a casting production line, carrying out melt casting on a PP raw material to the surface of a metal grating roller for cooling and shaping, and preparing PP paper with regularly arranged lenses on the surface;
d. carrying out tape casting on the PP paper again to compound TPU to obtain a PP/TPU grating film;
2) designing a grating pattern: carrying out pattern application design according to the arrangement rules of convex lenses of different grating types to manufacture a non-hopping anti-counterfeiting pattern;
3) and (3) grating film lamination imaging: the method for laminating and imaging the grating film is a UV printing imaging process;
the UV printing imaging process comprises the following steps:
a. cutting the PP/TPU grating film according to the requirements of the specifications on the machine;
b. directly forming an image on the back of the PP/TPU grating film through UV printing;
4) the application process comprises the following steps: and (3) carrying out high-frequency hot pressing on the PP/TPU grating film on fabrics such as shoe materials, clothes and the like, and tearing off the composite PP paper to obtain the TPU grating composite film with the 2D anti-counterfeiting pattern.
Example 4
1) Preparing a PP/TPU grating film: the method for preparing the PP/TPU grating film comprises the steps of preparing the PP/TPU grating film through a metal grating roller;
the process for preparing the PP/TPU grating film by the metal grating roller comprises the following steps:
a. processing a reverse metal grating roller with lenses arranged according to a specific rule by high-precision laser engraving equipment according to the number of grating lines required by production;
b. mounting the metal grating roller on a casting production machine;
c. through a casting production line, carrying out melt casting on a PP raw material to the surface of a metal grating roller for cooling and shaping, and preparing PP paper with regularly arranged lenses on the surface;
d. carrying out tape casting on the PP paper again to compound TPU to obtain a PP/TPU grating film;
2) designing a grating pattern: carrying out pattern application design according to the arrangement rules of convex lenses of different grating types to manufacture a non-hopping anti-counterfeiting pattern;
3) and (3) grating film lamination imaging: the method for laminating and imaging the grating film is an electrochemical aluminum transfer imaging process;
the electrochemical aluminum transfer printing imaging process comprises the following steps:
a. carving a grating pattern on the electrochemical aluminum material by an ultraviolet laser marking machine, wherein the marking speed is 1000 mm/s;
b. transferring the electrochemical aluminum pattern to the back of a PP/TPU grating film for imaging through a transfer printing process;
4) the application process comprises the following steps: and (3) carrying out high-frequency hot pressing on the PP/TPU grating film on fabrics such as shoe materials, clothes and the like, and tearing off the composite PP paper to obtain the TPU grating composite film with the 2D anti-counterfeiting pattern.
The technical solutions of the present invention or similar technical solutions designed by those skilled in the art based on the teachings of the technical solutions of the present invention are all within the scope of the present invention to achieve the above technical effects.
Claims (3)
1. A preparation method of a TPU grating composite film with a 2D anti-counterfeiting pattern is characterized by comprising the following steps:
1) preparing a PP/TPU grating film: the method for preparing the PP/TPU grating film is one of two production processes, wherein the two production processes are respectively as follows: preparing a PP/TPU grating film through a hard plastic grating sheet and preparing the PP/TPU grating film through a metal grating roller;
2) designing a grating pattern: carrying out pattern application design according to the arrangement rules of convex lenses of different grating types to manufacture a non-hopping anti-counterfeiting pattern;
3) and (3) grating film lamination imaging: the method for laminating and imaging the grating film is one of two processes, wherein the two processes comprise a UV printing imaging process and an electrochemical aluminum transfer imaging process;
the UV printing imaging process comprises the following steps:
a. cutting the PP/TPU grating film according to the requirements of the specifications on the machine;
b. directly forming an image on the back of the PP/TPU grating film through UV printing;
the electrochemical aluminum transfer printing imaging process comprises the following steps:
a. carving a grating pattern on the electrochemical aluminum material by an ultraviolet laser marking machine, wherein the marking speed is 1000 mm/s;
b. transferring the electrochemical aluminum pattern to the back of a PP/TPU grating film for imaging through a transfer printing process;
4) the application process comprises the following steps: and (3) carrying out high-frequency hot pressing on the PP/TPU grating film on a shoe material and a garment fabric, and tearing off the compounded PP paper to obtain the TPU grating composite film with the 2D anti-counterfeiting pattern.
2. The preparation method of the TPU grating composite film with the 2D anti-counterfeiting pattern according to claim 1, wherein the process for preparing the PP/TPU grating film through the hard plastic grating sheet comprises the following steps:
a. copying the hard plastic grating sheet by an electroforming process to prepare a reverse grating nickel plate;
b. installing the grating nickel plate on a roller of a tape casting production machine;
c. through a casting production line, carrying out melt casting on a PP raw material to the surface of a grating nickel plate roller for cooling and shaping, and preparing PP paper with regularly arranged lenses on the surface;
d. and (3) casting and compounding TPU on the PP paper again to obtain the PP/TPU grating film.
3. The preparation method of the TPU grating composite film with the 2D anti-counterfeiting pattern according to claim 1, wherein the process steps of preparing the PP/TPU grating film through the metal grating roller comprise:
a. processing a reverse metal grating roller with lenses arranged according to a specific rule by high-precision laser engraving equipment according to the number of grating lines required by production;
b. mounting the metal grating roller on a casting production machine;
c. through a casting production line, carrying out melt casting on a PP raw material to the surface of a metal grating roller for cooling and shaping, and preparing PP paper with regularly arranged lenses on the surface;
d. and (3) casting and compounding TPU on the PP paper again to obtain the PP/TPU grating film.
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| CN109856717A (en) * | 2018-12-10 | 2019-06-07 | 东莞市欧联光学科技有限公司 | A kind of production technology of the 3D grating label for waterproof slide fastener |
| CN113820772A (en) * | 2021-03-15 | 2021-12-21 | 深圳市百誉联拓科技有限公司 | Manufacturing method of 3D grating with TPU (thermoplastic polyurethane) as base material |
| CN113085406B (en) * | 2021-03-31 | 2022-12-27 | 福建骏昇光学科技有限公司 | 3D grating printing preparation process |
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| JPH07281015A (en) * | 1994-04-08 | 1995-10-27 | Hideo Shingu | Manufacture of laminated optical grating |
| JP2012189935A (en) * | 2011-03-14 | 2012-10-04 | Toppan Printing Co Ltd | Optical element |
| CN202758145U (en) * | 2012-10-17 | 2013-02-27 | 天津新特印刷有限公司 | Three-dimensional anti-fake image |
| CN102991049B (en) * | 2012-11-08 | 2015-08-12 | 江阴通利光电科技有限公司 | A kind of novel 3D optical stereoscopic diaphragm and preparation method |
| CN102998730B (en) * | 2012-12-24 | 2014-10-22 | 四川省宜宾普什集团3D有限公司 | Stereo grating |
| CN103287191A (en) * | 2013-05-29 | 2013-09-11 | 四川长虹电器股份有限公司 | Manufacturing method of 3D (Three Dimensional) printing decorated household appliance panel |
| CN103529555B (en) * | 2013-10-28 | 2016-03-02 | 四川省宜宾普什集团3D有限公司 | Goods and the manufacture method thereof of 360 degree of viewing bore hole 3D renderings can be realized |
| CN204288743U (en) * | 2014-09-23 | 2015-04-22 | 文明祥 | To signpost in one picture |
| CN104553428B (en) * | 2015-01-16 | 2017-08-08 | 深圳劲嘉集团股份有限公司 | A kind of multichannel stero dynamic image transfer film and its manufacture method |
| CN105676328B (en) * | 2016-03-14 | 2018-10-23 | 广东晟琪科技股份有限公司 | A kind of manufacturing method of ultra-thin grating |
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