CN112622467A - Preparation method of angle-dependent color-changing polarization hidden image-text - Google Patents
Preparation method of angle-dependent color-changing polarization hidden image-text Download PDFInfo
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- CN112622467A CN112622467A CN202011511544.6A CN202011511544A CN112622467A CN 112622467 A CN112622467 A CN 112622467A CN 202011511544 A CN202011511544 A CN 202011511544A CN 112622467 A CN112622467 A CN 112622467A
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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
- B41M3/148—Transitory images, i.e. images only visible from certain viewing angles
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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
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
- G09F3/02—Forms or constructions
- G09F3/0291—Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
- G09F3/02—Forms or constructions
- G09F2003/0208—Indicia
- G09F2003/0213—Concealed data
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Abstract
The invention discloses a preparation method of an angularly variable polarization hidden image-text, which comprises the following steps: (a) embedding required hidden information on a hidden image-text carrier with a polarizing property; (b) compounding the processed hidden image and text carrier on the reflecting layer; (c) and compounding a plurality of layers of polarizing materials onto a hidden image-text carrier, wherein the hidden image-text carrier is positioned between the polarizing materials and the reflecting layer. The prepared polarization hidden graph-text has different color combinations through the polarization materials with different layers; when the polarizing material is a layer, the polarization hidden image-text is black under the observation of the polarizing optical sheet at an initial angle, and the polarization hidden image-text is silver after the polarizing optical sheet is rotated for a certain angle (such as 90 ℃); when the polarizing material is two layers, the color combination presented by the polarization hiding graphics is purple and green; when the polarizing material has three layers, the color combination is yellow and blue; the product has richer hierarchical structure and also improves the anti-counterfeiting effect.
Description
Technical Field
The invention relates to the technical field of polarized products, in particular to a preparation method of an angle-dependent color-changing polarized hidden picture and text.
Background
Polarized light, i.e., light having a light vector of a light wave, is not changed in direction but only light whose magnitude changes with phase. Light is refracted at different angles as it passes through different media. When light passes through a special medium which can make the light generate a refraction angle of 90 degrees, a polarized light phenomenon (also called a polarized light phenomenon) can be generated; this refracted light is called polarized light; this particular medium is called a polarizing medium.
In the process of making a polarized invisible image, a plastic film produced by a stretching method is selected as a polarized image carrier, the polarized image carrier is subjected to heat-sensitive treatment by a laser engraving machine, molecules in a heated area are free from moving during heating, the molecules produced by the original stretching method are disordered and have the characteristics of a polarized medium, the polarized medium loses the polarization effect and becomes a common transparent film, and then the polarized image carrier film subjected to heat-sensitive treatment is compounded on a polarized reflector. However, it still has some problems. If the adopted laser equipment is expensive, troublesome to operate and high in complexity, the formed hidden image-text is single in color, and the hierarchical structure is not rich enough.
Disclosure of Invention
In view of the above, the present invention is directed to solve at least one of the above problems to a certain extent, and provides a method for preparing an angle-dependent color-changing polarization-hidden image, which can solve the problems of single color and insufficient hierarchical structure of the existing polarization-hidden image.
The technical scheme of the invention is realized as follows:
a preparation method of an angle-dependent color-changing polarization hidden image-text comprises the following steps:
(a) embedding required hidden information on a hidden image-text carrier with a polarizing property;
(b) compounding the processed hidden image and text carrier on the reflecting layer;
(c) and compounding a plurality of layers of polarizing materials onto a hidden image-text carrier, wherein the hidden image-text carrier is positioned between the polarizing materials and the reflecting layer.
As a further alternative of the preparation method of the optically variable polarization hidden image-text, the step (a) comprises:
(a1) manufacturing a design file of the hidden information by using design software;
(a2) preparing a thermoprinting plate based on a design file;
(a3) and carrying out hot stamping on the hidden image-text carrier on hot stamping equipment through the prepared hot stamping plate, wherein the hot stamping temperature changes the molecular arrangement of the hidden image-text carrier, and the polarization property of a hot stamping position is damaged.
As a further alternative of the preparation method of the color-changing-along polarization hidden image-text, the hidden image-text carrier is a membrane material with bidirectional stretchability.
As a further alternative of the preparation method of the angular color-changing polarization hidden image-text, the hidden image-text carrier is BOPP, PET or LDPE.
As a further alternative of the preparation method of the angular color-changing polarization hidden image-text, the reflecting layer is a silver paste reflecting layer.
As a further alternative of the preparation method of the angle-dependent color-changing polarization hidden image-text, the polarization material is a polarization film.
As a further alternative of the preparation method of the optically variable polarization hidden image-text, the polarization material is a layer.
As a further alternative of the preparation method of the optically variable polarization hidden image-text, the polarization material is two layers.
As a further alternative of the preparation method of the optically variable polarization hidden image-text, the polarization material is three layers.
The invention has the following beneficial effects: the polarization materials with different layers are used, so that the prepared polarization hidden graph-text has different color combinations; if the polarizing material is a layer, the polarization hidden image-text is black under the observation of the polarizing optical sheet at an initial angle, and the polarization hidden image-text is silver after the polarizing optical sheet is rotated for a certain angle (such as 90 ℃); if the polarizing material is two layers, the color combination of the polarization hiding graphics is purple and green; if the polarizing material has three layers, the color combination of the polarization hiding graphics and texts is yellow and blue; therefore, the product has richer hierarchical structure and also improves the anti-counterfeiting effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flow chart of a preparation method of the color-changing polarization hidden image-text of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "above," and "over" a second feature may mean that the first feature is directly above or obliquely above the second feature, or that only the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Referring to fig. 1, a method for preparing an angular color-changing polarization hidden image-text is shown, which comprises the following steps:
(a) embedding required hidden information on a hidden image-text carrier with a polarizing property;
(b) compounding the processed hidden image and text carrier on the reflecting layer;
(c) and compounding a plurality of layers of polarizing materials onto a hidden image-text carrier, wherein the hidden image-text carrier is positioned between the polarizing materials and the reflecting layer.
The polarization materials with different layers are used, so that the prepared polarization hidden graph-text has different color combinations; if the polarizing material is a layer, the polarization hidden image-text is black under the observation of the polarizing optical sheet at an initial angle, and after the polarizing optical sheet is rotated by a certain angle (for example, 90 degrees) relative to the polarization hidden image-text, the polarization hidden image-text is silver; if the polarizing material is two layers, the color combination of the polarization hiding graphics is purple and green; if the polarizing material has three layers, the color combination of the polarization hiding graphics and texts is yellow and blue; therefore, the product has richer hierarchical structure and also improves the anti-counterfeiting effect.
The hidden information is a pattern or/and a character to be hidden.
In some embodiments, in order to reduce production costs and increase production efficiency, step (a) comprises:
(a1) manufacturing a design file of the hidden information by using design software;
(a2) preparing a thermoprinting plate based on a design file;
(a3) and carrying out hot stamping on the hidden image-text carrier on hot stamping equipment through the prepared hot stamping plate, wherein the hot stamping temperature changes the molecular arrangement of the hidden image-text carrier, and the polarization property of a hot stamping position is damaged.
The design file is preferably a vector graph, and is adapted to be adjusted based on whether the hot stamping plate is a positive plate or a negative plate; the precision of the hot stamping plate is preferably higher than 0.2 mm; the hot stamping temperature does not cause the hidden image-text carrier to wrinkle or deform; the hidden image-text carrier is made of a film material with strong light transmission and bidirectional rope pulling performance, and films such as BOPP, PET, LDPE and the like are preferred; the hot stamping equipment only needs to use small-sized flat-sheet or roll-type hot stamping equipment, and can be pneumatic and hydraulic. Therefore, the film material selected by the hidden image-text carrier is common film material on the market, the adopted process is simple, the glue used for compounding can be common water-based compound glue, the compounding mode is not limited, and the roller coating and blade coating can be both suitable; the preparation method of the angularly variable polarization hidden image-text has low cost and high production efficiency.
In the above scheme, the reflective layer may be a silver paste reflective layer, wherein a silver foil type adhesive sticker or a cardboard is preferred, an adhesive sticker type base paper is not limited, and a tissue gram weight is preferably 80 gsm; the materials have strong light reflecting performance.
In the above embodiment, the polarizing material is preferably a polarizing film, and may also be a polarizing plate.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. A preparation method of an angle-dependent color-changing polarization hidden picture and text is characterized by comprising the following steps:
(a) embedding required hidden information on a hidden image-text carrier with a polarizing property;
(b) compounding the processed hidden image and text carrier on the reflecting layer;
(c) and compounding a plurality of layers of polarizing materials onto a hidden image-text carrier, wherein the hidden image-text carrier is positioned between the polarizing materials and the reflecting layer.
2. The method for preparing an optically variable polarization hiding pattern and text according to claim 1, wherein the step (a) comprises:
(a1) manufacturing a design file of the hidden information by using design software;
(a2) preparing a thermoprinting plate based on a design file;
(a3) and carrying out hot stamping on the hidden image-text carrier on hot stamping equipment through the prepared hot stamping plate, wherein the hot stamping temperature changes the molecular arrangement of the hidden image-text carrier, and the polarization property of a hot stamping position is damaged.
3. The method for preparing an optically variable polarizing hidden image-text according to claim 1, wherein the hidden image-text carrier is a film material with two-way stretchability.
4. The method for preparing an optically variable polarized hidden image-text according to claim 3, wherein the hidden image-text carrier is BOPP, PET or LDPE.
5. The method for preparing an optically variable polarization hidden image-text according to claim 1, wherein the reflective layer is a silver paste reflective layer.
6. The method for preparing an optically variable polarization hiding pattern and text according to claim 1, wherein the polarizing material is a polarizing film.
7. The method for preparing an optically variable polarization hiding pattern according to claim 1, wherein the polarizing material is a layer.
8. The method for preparing an optically variable polarization hiding pattern according to claim 1, wherein the polarization material is two layers.
9. The method for preparing an optically variable polarization hiding pattern and text according to claim 1, wherein the polarizing material is three layers.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011511544.6A CN112622467A (en) | 2020-12-18 | 2020-12-18 | Preparation method of angle-dependent color-changing polarization hidden image-text |
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| CN202011511544.6A CN112622467A (en) | 2020-12-18 | 2020-12-18 | Preparation method of angle-dependent color-changing polarization hidden image-text |
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| CN112622467A true CN112622467A (en) | 2021-04-09 |
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Citations (8)
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|---|---|---|---|---|
| CN100395568C (en) * | 2005-12-31 | 2008-06-18 | 黄仁瑜 | Method for making polarizing invisible image by using heat sensitive process |
| CN101200157A (en) * | 2007-12-12 | 2008-06-18 | 夏训崇 | Method for making polarized-light stealth pattern |
| CN102501462A (en) * | 2011-10-28 | 2012-06-20 | 陈美琴 | Polarization concealed image and preparing method thereof |
| CN103412363A (en) * | 2013-08-06 | 2013-11-27 | 西北工业大学 | Method for manufacturing polarization invisible images of near-infrared band |
| CN103412362A (en) * | 2013-08-06 | 2013-11-27 | 西北工业大学 | Method for manufacturing near-infrared polarization invisible image elements |
| CN203422538U (en) * | 2013-07-16 | 2014-02-05 | 江门亿都半导体有限公司 | Reflecting LCD based on dyeing liquid crystal |
| CN207689775U (en) * | 2017-12-21 | 2018-08-03 | 广州尚川防伪科技有限公司 | A kind of testing piece of colorful visualization polaroid glasses |
| CN110764269A (en) * | 2019-11-02 | 2020-02-07 | 深圳市麓邦技术有限公司 | Optical gradual change system and method |
-
2020
- 2020-12-18 CN CN202011511544.6A patent/CN112622467A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100395568C (en) * | 2005-12-31 | 2008-06-18 | 黄仁瑜 | Method for making polarizing invisible image by using heat sensitive process |
| CN101200157A (en) * | 2007-12-12 | 2008-06-18 | 夏训崇 | Method for making polarized-light stealth pattern |
| CN102501462A (en) * | 2011-10-28 | 2012-06-20 | 陈美琴 | Polarization concealed image and preparing method thereof |
| CN203422538U (en) * | 2013-07-16 | 2014-02-05 | 江门亿都半导体有限公司 | Reflecting LCD based on dyeing liquid crystal |
| CN103412363A (en) * | 2013-08-06 | 2013-11-27 | 西北工业大学 | Method for manufacturing polarization invisible images of near-infrared band |
| CN103412362A (en) * | 2013-08-06 | 2013-11-27 | 西北工业大学 | Method for manufacturing near-infrared polarization invisible image elements |
| CN207689775U (en) * | 2017-12-21 | 2018-08-03 | 广州尚川防伪科技有限公司 | A kind of testing piece of colorful visualization polaroid glasses |
| CN110764269A (en) * | 2019-11-02 | 2020-02-07 | 深圳市麓邦技术有限公司 | Optical gradual change system and method |
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