CN107458686B

CN107458686B - Anti-counterfeiting cigarette packaging box

Info

Publication number: CN107458686B
Application number: CN201710609406.3A
Authority: CN
Inventors: 鲁琴; 徐晓光; 李丽; 牟靖文; 魏家新; 杨志方; 寇倩倩
Original assignee: Hubei Huagong Image Technology Development Co ltd
Current assignee: Hubei Huagong Image Technology Development Co ltd
Priority date: 2017-07-25
Filing date: 2017-07-25
Publication date: 2023-03-31
Anticipated expiration: 2037-07-25
Also published as: CN107458686A

Abstract

The invention discloses an anti-counterfeiting cigarette packaging box which comprises a box body and a cover plate, wherein the box body and the cover plate are formed by folding a piece of composite paper, and the composite paper sequentially consists of a first anti-counterfeiting layer, an adhesive layer and a second anti-counterfeiting layer; the surface of the first PET base film of the first anti-counterfeiting layer is locally provided with the low-bonding-strength layer in a positioning manner, so that the cover plate can be conveniently and repeatedly adhered, and the effects of moisture preservation and no need of lining paper are achieved; the first anti-counterfeiting layer and the second anti-counterfeiting layer are respectively provided with the micro-image-text array layer and the micro-lens array layer, so that better anti-counterfeiting property is provided; the micro-lens array layer or the micro-lens array layer further comprises a holographic anti-counterfeiting pattern, the micro-lens array layer of the second anti-counterfeiting layer or the micro-lens array layer capable of changing color reversibly due to temperature is colorless when the temperature is raised, micro-image and text information of the first anti-counterfeiting layer is displayed, the micro-lens array layer is restored to the original color and hides the micro-image and text information when the temperature is lowered to the room temperature, the micro-lens array and the micro-image and text array are respectively arranged on the surfaces of different PET layers, and the production and the manufacture are more convenient.

Description

Anti-counterfeiting cigarette packaging box

Technical Field

The invention relates to an anti-counterfeiting cigarette packaging box, and belongs to the technical field of cigarette materials in the cigarette industry.

Background

As a popular consumer product, the cigarette packaging box is attractive in appearance, and also has the characteristics of moisture retention, fragrance retention, anti-counterfeiting and the like. The existing cigarette mainstream packaging forms are mainly divided into hard boxes, soft boxes and soft package hardening. They generally consist of an outer box and an inner lining box, wherein the inner lining box is made of inner lining paper and is used for moisture protection and fragrance preservation. Once the cigarette taking port of the cigarette packet is torn open, the moisturizing effect of the inner package is greatly reduced, and the quality of the remaining cigarettes is affected. People also have conducted many researches on how to enable the cigarette taking opening of the cigarette packaging box to be opened and sealed for many times, for example, a repeatedly openable sealed cigarette package is arranged, but the problems of complex process flow and excessive used materials still exist, and the moisturizing effect still needs to be improved.

The anti-counterfeiting of the cigarette packet mostly depends on a holographic anti-counterfeiting label at present, namely the holographic anti-counterfeiting label is positioned and thermoprinted at the local position of the cigarette packet, the holographic anti-counterfeiting label is positioned and thermoprinted after the cigarette packet is printed, and the production efficiency is low because some of the holographic anti-counterfeiting labels are printed after being thermoprinted; with the development of anti-counterfeiting technology, common holographic anti-counterfeiting labels are easy to copy at present, and the anti-counterfeiting effect is greatly reduced.

The MOTION technology is a micro-lens array imaging technology, and the anti-counterfeiting technology has strong dynamic sense and is particularly attractive to eyeballs. The technology is characterized in that a micro-lens array and a micro-image-text array matched with the micro-lens array are respectively manufactured on two sides of a transparent film, and the micro-image-text array is imaged through the Moire amplification effect of the micro-lens array, so that various strong effects such as dynamic feeling, stereoscopic vision, transformation and the like are formed, wherein the effects comprise floating, sinking, parallel motion (the dynamic effect is consistent with the moving direction), orthogonal motion (the dynamic effect is vertical to the moving direction), double channels and the like. The processing precision of the micro lens array and the micro image-text array is required to be very high, the conventional plate making and production process can not meet the requirements, only the special processes such as modern precise micro-nano processing, UV imprinting and the like are relied on, in addition, the strict structure matching relationship is required between the micro lens array and the micro image-text array, the process requirement is very high, the counterfeiting is extremely difficult, and the method is an ideal popular anti-counterfeiting technology. The technology is widely applied to the anti-counterfeiting of paper money in an anti-counterfeiting safety line mode. CN106054290A discloses a composite film and a preparation method thereof, and the MOTION technology is applied to a composite film, which can be applied to markets of package printing, labels, anti-counterfeiting and the like. CN20583604U discloses an optical imaging anti-counterfeiting element and an anti-counterfeiting packaging sheet, which are also an application of MOTION technology, can be made into an anti-counterfeiting packaging sheet and have an identification effect. However, the application of the anti-counterfeiting paper and the anti-counterfeiting paper in cigarette packets has various problems: because the application of the motion technology must comprise a layer of transparent film, the motion technology cannot be applied to cigarette packet anti-counterfeiting in the form of a hot stamping film or a transfer film, secondly, the anti-counterfeiting label is made to be used for the cigarette packet and is easy to be uncovered and reused, thirdly, the application form of the independent composite film is easy to copy, and the anti-counterfeiting characteristic is single and is not accepted by the cigarette packet industry. Therefore, the smart application of the anti-counterfeiting technology in common cigarette packets is not seen at present.

Disclosure of Invention

The invention aims to solve the problems in the background art, and provides an anti-counterfeiting cigarette packaging box with better anti-counterfeiting performance, which realizes the motion anti-counterfeiting technology on a box piece, thereby not only avoiding the hot stamping anti-counterfeiting label procedure in the later stage of cigarette packet manufacturing, simplifying the cigarette packet production process flow, saving materials, but also improving the moisturizing effect of the cigarette packet.

In order to achieve the purpose, the invention adopts the following technical scheme:

an anti-counterfeiting cigarette packaging box is formed by folding a piece of composite paper, and comprises a box body and a cover plate, wherein the box body is provided with a front wall, a rear wall, a left side wall, a right side wall, an upper end face and a lower end face; the composite paper sequentially comprises: the anti-counterfeiting adhesive comprises a first anti-counterfeiting layer, an adhesive layer and a second anti-counterfeiting layer; a local low-bonding-strength layer is positioned and arranged between the first anti-counterfeiting layer and the adhesive layer in the middle of the composite paper; a non-closed cover plate weakening line and a non-closed cigarette taking port weakening line are arranged in the local low-bonding strength layer area, the cover plate weakening line is formed by cutting through the second anti-counterfeiting layer, and the cigarette taking port weakening line is formed by cutting through the first anti-counterfeiting layer; the smoke outlet weakening line is positioned in the cover plate weakening line; the end points of the cover plate weakening line and the cigarette taking opening weakening line are positioned at the crease of the rear wall and the upper end surface of the box body; the method is characterized in that:

the first anti-counterfeiting layer sequentially comprises: the plastic film comprises a first PET layer, a micro image-text array layer, an electroplated aluminum layer, a composite adhesive layer and coated paper; the second anti-counterfeiting layer sequentially comprises: the micro-lens array layer and the second PET layer are bonded with the first PET layer through an adhesive layer; the first anti-counterfeiting layer, the adhesive layer and the second anti-counterfeiting layer form anti-counterfeiting composite paper with a micro-lens array; the total thickness of the first PET layer, the adhesive layer and the second PET layer is equal to the focal length of the micro lens array; clear and complete micro-image-text information is displayed on the cover plate; the micro lens array and the micro image-text array are respectively arranged on the surfaces of different PET layers, so that the production and the manufacture are more convenient;

when the cigarette packaging box is opened for the first time, the cover plate is uncovered along the weakening line of the cover plate, the second anti-counterfeiting layer and the adhesive layer of the composite paper are torn, the second anti-counterfeiting layer and the adhesive layer are separated from the low-adhesion-strength layer, the first anti-counterfeiting layer is torn along the weakening line of the cigarette taking port, the low-adhesion-strength layer located within the weakening line of the cigarette taking port and the first anti-counterfeiting layer are attached to the second anti-counterfeiting layer under the action of the adhesive layer to form a part of the middle part of the cover plate, and the cigarette taking port is formed along with the tearing of the weakening line of the cigarette taking port; the inner surface of the cover plate is positioned between the cover plate weakening line and the cigarette taking port weakening line and is an exposed adhesive layer area, and the exposed adhesive layer area is repeatedly adhered to the exposed local low-adhesion-strength layer through an adhesive layer; when the cover plate is pulled open, only partial micro-image-text information is seen on the cover plate, and when the cover plate is pasted on the exposed local low-viscosity strength layer again, the clear and complete micro-image-text information can be displayed on the cover plate to form double anti-counterfeiting;

the local low-bonding-strength layer is a local printing layer, the bonding force between the local printing layer and the adhesive layer is smaller than that between the first PET layer and the adhesive layer, when the cover sheet is opened, the cover sheet is separated from the low-bonding-strength layer, and then the cover sheet can be repeatedly bonded to the bonding-strength layer; in the area of the non-low bonding strength layer, the first anti-counterfeiting layer and the second anti-counterfeiting layer are firmly adhered together under the action of the adhesive layer; providing better strength to the cigarette pack.

Preferably: the low adhesive strength layer is in one of a square shape, a diamond shape, a trapezoid shape, a circular shape or an oval shape.

Preferably: the microlens array layer includes a holographic anti-counterfeiting pattern.

Preferably: the gram number of the coated paper of the first anti-counterfeiting layer is 50 to 120g.

Preferably: the thickness of the first PET layer of the first anti-counterfeiting layer is 10 to 30 mu m.

Preferably: the thickness of the second PET layer of the second anti-counterfeiting layer is 30 to 80 mu m.

Preferably, the microlens array layer of the second anti-counterfeiting layer is a reversible thermochromic microlens array layer, the reversible thermochromic microlens array layer displays colors at room temperature and hides the micro-image information of the first anti-counterfeiting layer, and when the reversible thermochromic microlens array layer is rubbed back and forth to be heated, the reversible thermochromic microlens array layer becomes colorless and transparent, so that the micro-image information of the first anti-counterfeiting layer is displayed; on the contrary, when the temperature of the reversible thermochromic microlens array layer is restored to room temperature, the reversible thermochromic microlens array layer is restored to the original color and covers the microimage-text information of the first anti-counterfeiting layer.

The invention has the beneficial effects that:

1) Has better anti-counterfeiting characteristics: by constructing the double-layer anti-counterfeiting layer, the application of the motion technology is realized on the box sheet, the box sheet has better anti-counterfeiting performance, and the cover sheet displays complete micro-image-text information when in a pasting state, and displays partial micro-image-text information when in an opening state, thereby realizing double anti-counterfeiting; and the micro lens array and the micro image-text array are respectively arranged on the surfaces of different PET layers, so that the production and the manufacture are more convenient.

2) The moisturizing effect is better, and no lining paper or inner frame is needed to be additionally used; the cover plate weakening line and the cigarette taking port weakening line are arranged in the low-adhesion-strength layer area, so that the cover plate is easy to open when a cigarette is taken and can be repeatedly adhered to the low-adhesion-strength layer, good sealing performance is achieved, and the moisturizing effect is improved; the inner lining paper required by the traditional cigarette package is not needed, the structure of the used composite paper multi-layer material also provides enough strength, an inner frame is not needed, and the material is saved.

3) The cigarette packing box is formed by folding a piece of composite paper, is integrally formed, and simplifies the process flow of cigarette packet production.

Drawings

FIG. 1 is a schematic perspective view of an anti-counterfeit cigarette package according to an embodiment of the present invention after a cover sheet is torn off;

FIG. 2 is a schematic diagram of the position of a composite paper die-cut cigarette taking port of the anti-counterfeiting cigarette packaging box according to the embodiment of the invention;

FIG. 3 is a schematic view showing the interlayer structure of the composite paper constituting the "anti-counterfeit cigarette package" according to the embodiment of the present invention;

FIG. 4 is a schematic view showing a micro-pattern when a cover sheet of an anti-counterfeit cigarette package box according to an embodiment of the present invention is in a stuck state;

fig. 5 is a schematic diagram of the micro-image and text displayed when the cover plate of the anti-counterfeiting cigarette packaging box is in an open state according to the embodiment of the invention.

Description of the reference symbols in the drawings:

a-1-box cover, A-2-box body, 1-first anti-counterfeiting layer, 2-adhesive layer, 3-second anti-counterfeiting layer, 4-local low adhesion strength layer, 5-smoke outlet weakening line, 6-cover plate weakening line, 7-end points of the cover plate weakening line 6 and the smoke outlet weakening line 5, 11-first PET layer, 12-micro picture and text array layer, 13-electroplated aluminum layer, 14-composite adhesive layer, 15-coated paper, 21-exposed adhesive layer area, 31-micro lens array layer and 32-second PET layer.

Detailed Description

Embodiments of the invention will be further described with reference to the accompanying drawings, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below are exemplary and are intended to be illustrative, but not limiting, of the present invention, and any modifications, equivalents, or improvements made within the spirit and principle of the present invention, which are not described in detail in the technical solutions below, are known in the art, and are intended to be included within the scope of the claims of the present invention.

Example 1:

referring to fig. 1 to 3, the cigarette packing box of the present invention is a packing box formed by folding a piece of composite paper, and comprises a box body a-2 and a cover sheet a-1, wherein the box body a-2 and the cover sheet a-1 are formed by folding a piece of composite paper, and the box body a-2 has a front wall, a rear wall, left and right side walls, and upper and lower end surfaces; the composite paper is sequentially composed of a first anti-counterfeiting layer 1, an adhesive layer 2 and a second anti-counterfeiting layer 3; a local low-bonding-strength layer 4 is positioned and arranged between the first anti-counterfeiting layer 1 and the adhesive layer 2 in the middle of the composite paper; a cover plate weakening line 6 and a cigarette taking port weakening line 5 are arranged in the middle of the composite paper, the cover plate weakening line 6 and the cigarette taking port weakening line 5 are both non-closed curves or non-closed broken lines, the cover plate weakening line 6 and the cigarette taking port weakening line 5 are arranged in the area of the local low-adhesion-strength layer 4, and the cigarette taking port weakening line 5 is positioned within the cover plate weakening line 6; when the composite paper is folded to form a cigarette packaging box, the end points 7 of the cover plate weakening line 6 and the cigarette taking port weakening line 5 are positioned at the crease lines of the rear wall and the upper end face of the box body; the middle points of the cover plate weakening line 6 and the cigarette taking opening weakening line 5 are positioned on the front wall of the box body; the flap weakening line 6 is formed by cutting through the second anti-counterfeiting layer 3, and the mouth-opening weakening line 5 is formed by cutting through the first anti-counterfeiting layer 1; the first anti-counterfeiting layer 1 sequentially comprises a first PET layer 11, a micro image-text array layer 12, an electroplated aluminum layer 13, a composite adhesive layer 14 and coated paper 15, as shown in fig. 4, different regions of the micro image-text array layer 12 contain different micro image-text information (such as

numbers

1, 2 and 3), the second anti-counterfeiting layer 3 sequentially comprises a micro lens array layer 31 and a second PET layer 32, and the second PET layer 32 of the second anti-counterfeiting layer 3 is bonded with the first PET layer 11 of the first anti-counterfeiting layer 1 through a bonding layer 2. The total thickness of the first PET layer 11 of the first anti-counterfeiting layer 1, the adhesive layer 2 and the second PET layer 32 of the second anti-counterfeiting layer 3 is equal to the focal length of the micro-lens array; clear and complete micro graphic and text information is displayed on the cover plate A-1.

When the cigarette packaging box is opened for the first time, the cover plate is uncovered along the cover plate weakening line 6, the second anti-counterfeiting layer 3 and the adhesive layer 2 of the composite paper are torn, the second anti-counterfeiting layer 3 and the adhesive layer 2 are separated from the local low-adhesion-strength layer 4, meanwhile, the first anti-counterfeiting layer 1 is torn along the cigarette taking port weakening line 5, the local low-adhesion-strength layer 4 located within the cigarette taking port weakening line 5 and the first anti-counterfeiting layer 1 are attached to the second anti-counterfeiting layer 3 under the action of the adhesive layer 2 to form a part of the middle part of the cover plate A-1, and the cigarette taking port is formed along with the tearing of the cigarette taking port weakening line 5; the inner surface of the cover plate A-1 is positioned between the weakening line of the cover plate and the weakening line of the cigarette taking port and is provided with an exposed adhesive layer area 21, and the exposed adhesive layer area 21 can be repeatedly adhered to the exposed low-adhesion-strength layer 4 through the adhesive layer 2; as shown in figure 5, when the cover sheet A-1 is pulled open, only part of the micro graphic and text information can be seen on the cover sheet A-1, and when the cover sheet A-1 is pasted on the exposed local low-viscosity strength layer 4 again, the clear and complete micro graphic and text information can be displayed on the cover sheet A-1, so that the double anti-counterfeiting effect is achieved.

The local low-bonding-strength layer 4 is a local printing layer, the bonding force between the local printing layer and the adhesive layer is smaller than the bonding force between the second PET layer 32 and the adhesive layer 2, when the cover plate is opened, the cover plate is easy to separate from the local low-bonding-strength layer 4, and then the cover plate A-1 can be repeatedly pasted on the local low-bonding-strength layer 4; in the area of the non-low bonding strength layer, the first anti-counterfeiting layer 1 and the second anti-counterfeiting layer 3 are firmly stuck together under the action of the adhesive layer 2, so that better strength is provided for the cigarette case.

In the embodiment of the present invention, the low adhesion strength layer 4 is set to be square.

The gram number of the coated paper 15 of the first anti-counterfeiting layer 1 is 90g, the thickness of the first PET layer 11 is 20 mu m, the thickness of the adhesive layer 2 is 10 mu m, the thickness of the second PET layer 32 of the second anti-counterfeiting layer 3 is 30 mu m, and the focal length of the micro-lens array is 60 mu m.

Example 2:

the implementation scheme is the same as example 1, only the micro-lens array layer is set to partially contain the holographic anti-counterfeiting pattern.

Example 3:

the implementation scheme is the same as that of example 1, only the microlens array layer of the second anti-counterfeiting layer 3 is set to be a reversible thermochromic microlens array layer, the microlens array layer displays red color and can hide the micro-image information, the thermochromic layer changes to be colorless after a certain temperature is applied to the surface of the microlens array layer through back and forth friction, at the moment, the micro-image information on the first anti-counterfeiting layer 1 can be displayed, and when the surface temperature of the microlens array layer returns to the room temperature, the microlens array layer changes to red color and covers the micro-image information of the first anti-counterfeiting layer.

The invention provides a cigarette packaging box, which realizes application of a motion technology on cigarette packets by constructing a double-layer anti-counterfeiting layer, has better anti-counterfeiting property, displays complete micro-image-text information when a cover plate is in a pasting state, and displays partial micro-image-text information when the cover plate is in an opening state, thereby realizing double anti-counterfeiting. The cover plate weakening line and the cigarette taking port weakening line are arranged in the low-adhesion-strength layer area, so that the cover plate is easy to open when a cigarette is taken and can be repeatedly adhered to the low-adhesion-strength layer, good sealing performance is achieved, and the moisturizing effect is improved; the inner lining paper required by the traditional cigarette package is not needed, the structure of the multilayer material of the used composite paper also provides enough strength, an inner frame is not needed, and the material is saved. The cigarette packing box is formed by folding a piece of composite paper, is integrally formed, and simplifies the process flow of cigarette packet production.

The above are examples of the present invention and should not be construed as limiting the scope of the present invention, and it should be understood by those skilled in the art that modifications and equivalents of the present invention may be made without departing from the scope of the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

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," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that 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.

Claims

1. An anti-counterfeiting cigarette packaging box is formed by folding a piece of composite paper, and comprises a box body and a cover plate, wherein the box body is provided with a front wall, a rear wall, a left side wall, a right side wall, an upper end face and a lower end face; the composite paper sequentially comprises: the anti-counterfeiting adhesive comprises a first anti-counterfeiting layer, an adhesive layer and a second anti-counterfeiting layer; a local low-bonding-strength layer is positioned and arranged between the first anti-counterfeiting layer and the adhesive layer in the middle of the composite paper; a non-closed cover plate weakening line and a non-closed cigarette taking port weakening line are arranged in the local low-bonding strength layer area, the cover plate weakening line is formed by cutting through the second anti-counterfeiting layer, and the cigarette taking port weakening line is formed by cutting through the first anti-counterfeiting layer; the smoke outlet weakening line is positioned in the cover plate weakening line; the end points of the cover plate weakening line and the cigarette taking opening weakening line are positioned at the crease of the rear wall and the upper end surface of the box body; the method is characterized in that:

the first anti-counterfeiting layer sequentially comprises: the plastic film comprises a first PET layer, a micro image-text array layer, an electroplated aluminum layer, a composite adhesive layer and coated paper; the second anti-counterfeiting layer sequentially comprises: the micro-lens array layer and the second PET layer are bonded with the first PET layer through an adhesive layer; the first anti-counterfeiting layer, the adhesive layer and the second anti-counterfeiting layer form anti-counterfeiting composite paper with a micro-lens array; the total thickness of the first PET layer, the adhesive layer and the second PET layer is equal to the focal length of the micro lens array; clear and complete micro-image-text information is displayed on the cover plate;

when the cigarette packaging box is opened for the first time, the cover plate is uncovered along the cover plate weakening line, the second anti-counterfeiting layer and the adhesive layer of the composite paper are torn, the second anti-counterfeiting layer and the adhesive layer are separated from the low-adhesion-strength layer, the first anti-counterfeiting layer is torn along the cigarette taking port weakening line, the low-adhesion-strength layer located inside the cigarette taking port weakening line and the first anti-counterfeiting layer are attached to the second anti-counterfeiting layer under the action of the adhesive layer to form a part of the middle of the cover plate, and the cigarette taking port is formed by tearing along the cigarette taking port weakening line; the inner surface of the cover plate is positioned between the cover plate weakening line and the cigarette taking port weakening line and is an exposed adhesive layer area, and the exposed adhesive layer area is repeatedly adhered to the exposed local low-adhesion-strength layer through an adhesive layer; when the cover plate is pulled open, only partial micro-image-text information is seen on the cover plate, and when the cover plate is pasted on the exposed local low-viscosity strength layer again, the clear and complete micro-image-text information can be displayed on the cover plate to form double anti-counterfeiting;

the local low-bonding-strength layer is a local printing layer, the bonding force between the local printing layer and the adhesive layer is smaller than that between the first PET layer and the adhesive layer, when the cover plate is opened, the cover plate is separated from the low-bonding-strength layer, and then the cover plate can be repeatedly pasted on the bonding-strength layer; in the area of the non-low bonding strength layer, the first anti-counterfeiting layer and the second anti-counterfeiting layer are firmly adhered together under the action of the adhesive layer.

2. An anti-counterfeit cigarette package according to claim 1, wherein: the low adhesive strength layer is in one of a square shape, a diamond shape, a trapezoid shape, a circular shape, or an oval shape.

3. An anti-counterfeit cigarette package according to claim 1, wherein: the microlens array layer includes a holographic anti-counterfeiting pattern.

4. An anti-counterfeit cigarette package according to claim 1, wherein: the gram number of the coated paper of the first anti-counterfeiting layer is 50 to 120g.

5. An anti-counterfeit cigarette package according to claim 1, wherein: the thickness of the first PET layer of the first anti-counterfeiting layer is 10 to 30 mu m.

6. An anti-counterfeit cigarette package according to claim 1, wherein: the thickness of the second PET layer of the second anti-counterfeiting layer is 30 to 80 mu m.

7. An anti-counterfeit cigarette package according to claim 1, wherein: the micro-lens array layer of the second anti-counterfeiting layer is a reversible thermochromic micro-lens array layer, and the reversible thermochromic micro-lens array layer displays colors at room temperature, is colorless and transparent when heated, and displays colors when cooled to room temperature.