CN111276035B - Temperature indicating label - Google Patents
Temperature indicating label Download PDFInfo
- Publication number
- CN111276035B CN111276035B CN202010199520.5A CN202010199520A CN111276035B CN 111276035 B CN111276035 B CN 111276035B CN 202010199520 A CN202010199520 A CN 202010199520A CN 111276035 B CN111276035 B CN 111276035B
- Authority
- CN
- China
- Prior art keywords
- layer
- temperature
- dispersion medium
- temperature indicating
- dye
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- G09F3/0294—Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time where the change is not permanent, e.g. labels only readable under a special light, temperature indicating labels and the like
-
- 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
- G09F3/0297—Forms or constructions including a machine-readable marking, e.g. a bar code
Abstract
The invention discloses a temperature indicating label which comprises a first substrate layer, a dye layer, a diffusion layer, a color development substance layer and a second substrate layer which are sequentially arranged, wherein the dye layer comprises a first dispersion medium and a dye dispersed in the first dispersion medium, the color development substance layer comprises a second dispersion medium and an organic material dispersed in the second dispersion medium, the organic material generates Lewis acid by illumination, and the diffusion layer enables the Lewis acid to be contacted with the dye to change color above an indicating temperature. The temperature indicating label can be started through light irradiation, is convenient to transport and store, and has the advantages of small volume, simple structure, low cost, convenience in mass production and obvious color change contrast.
Description
Technical Field
The invention relates to the technical field of temperature monitoring and application, in particular to a temperature indicating label.
Background
At present, cold chain products such as fast-food products, blood products, vaccines and the like need to be kept in a certain temperature range in the transportation and storage processes, the products need a low-temperature environment in the preparation process, the products can reach the hands of consumers through a series of cold chain transportation links after leaving factories, each link is a potential risk point, and the serious consequence can be caused by the over-standard temperature of any link in the cold chain links. If problems occur in the transportation or storage process, the responsible party is difficult to identify.
In the prior art, chinese patent application No. CN200420078916.0 mentions the capillary action principle of a simple thermometer, so as to make a color-changeable device when the ambient temperature exceeds the set temperature, the device has a relatively large volume and the cold chain product has a relatively small volume, and key parts of the device are fragile and difficult to use. In addition, the british timeslip company provides a color-changing label device in a patent with the application number of CN02814632.8 applied in china, a solution gradually permeates into an observation area after a capsule filled with a solvent is crushed, and the solution can lose efficacy within a few minutes for a short person and a few hours for a later person after being used, so that the color-changing label device can only measure cold chain transportation time and cannot measure whether a cold chain environment exceeds a set dangerous temperature, and meanwhile, the color-changing label device has the problems of complex structure, high cost and large volume, and the popularization and the application of the color-changing label device are limited. Vaccine thermal label VVM (vaccine visual monitor) recommended by WHO official in the field of vaccine temperature monitoring at present has the problems of low-temperature production, low-temperature transportation cost and unobvious failure color contrast. The patent with the publication number of CN103903509B applied by Suzhou Huashi in China adopts a mode that two laminated layers are respectively stored and transported and are combined together when in use, and the use mode increases the investment of equipment and the requirement of the bonding precision when in use for customers and also limits the popularization and application of the equipment.
Therefore, it is necessary to provide a timing temperature indicating label with convenient start, small volume, simple structure, low cost, convenient mass production and obvious color change contrast.
Disclosure of Invention
The invention aims to provide a temperature indicating label which is convenient to start, small in size, simple in structure, low in cost, convenient to produce in quantity and obvious in color change contrast, aiming at the technical problems in the prior art.
The invention adopts the following technical scheme:
the utility model provides a temperature indication label, temperature indication label is including the first substrate layer, dyestuff layer, diffuse layer, color development material layer and the second substrate layer that set gradually, the dyestuff layer include first dispersion medium and disperse in dyestuff in first dispersion medium, the color development material layer include second dispersion medium and disperse in organic material in the second dispersion medium, organic material illumination generates Lewis acid, the diffuse layer makes more than the instruction temperature Lewis acid with the dyestuff contact takes place to change colour.
Preferably, the indicated temperature ranges from-65 ℃ to 80 ℃.
Preferably, the organic material is selected from one or more of diaryliodonium salts, triarylsulfonium salts, alkylsulfonium salts, iron arene salts, sulfonyloxy ketones, and triarylsiloxy ethers.
Preferably, the lewis acid is a cation.
Preferably, the illumination is ultraviolet and blue light with wavelengths in the range of 100-480 nm.
Preferably, the material of the diffusion layer is an acrylic polymer, a silicone-based polymer, or an olefin-based polymer.
Preferably, the diffusion layer has a thickness in the range of 1-500 microns.
Preferably, the first dispersion medium and the second dispersion medium are selected from one or more of acrylic glue, polyurethane glue, silicone glue, and epoxy glue.
Preferably, the dye is selected from one or more of bromothymol blue, bromocresol green, methyl yellow, methyl orange, bromocresol green, phenolphthalein, green pigment-5, red pigment-16, melanin-1, crystal violet lactone and benzoyl leuco methylene blue.
Preferably, the first substrate layer and the second substrate layer are selected from one or more of polymer materials such as PET, PEN, PC, PP, PMMA, PBT, PVC, PI, cellulose and the like.
Preferably, the display panel further comprises a shielding layer positioned outside the second substrate layer, and the shielding layer is provided with an observation window region.
Preferably, the shielding layer is provided with one or more of an electronic identification label, a two-dimensional code, a bar code or other electronic identification patterns.
The temperature indicating label can be started through light irradiation, is convenient to transport and store, and has the advantages of small volume, simple structure, low cost, convenience in mass production and obvious color change contrast.
Drawings
The invention may be better understood by reference to the following description of embodiments of the invention taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a schematic cross-sectional view of a temperature indicating label according to a first embodiment of the present invention;
FIG. 2 is a temperature-time curve of the first embodiment of the present invention at which the temperature indicating label starts to develop color;
FIG. 3 is a temperature-time curve for a first embodiment of the temperature indicating label of the present invention when it reaches the color development endpoint;
FIG. 4 is a schematic cross-sectional view of a temperature indicating label according to a second embodiment of the present invention;
fig. 5 is a schematic view of several general structures of the temperature indicating label of the present invention.
In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, it will be apparent to those skilled in the art that the present invention may be practiced without these specific details. The illustrated exemplary embodiments of the invention are provided for purposes of illustration only and are not intended to be limiting of the invention. Therefore, it is intended that the scope of the invention be limited not by this detailed description, but rather by the claims appended hereto.
The temperature indicating label according to the embodiment of the present invention will be described in detail with reference to the accompanying drawings.
The first embodiment:
fig. 1 is a schematic cross-sectional structure diagram of a temperature indicating label according to a first embodiment of the present invention, as shown in fig. 1, the temperature indicating label of the present embodiment includes a first substrate layer 10, a dye layer 20, a diffusion layer 30, a color developing substance layer 40 and a second substrate layer 50, which are sequentially disposed, the dye layer 20 includes a first dispersion medium and a dye dispersed in the first dispersion medium, the color developing substance layer 40 includes a second dispersion medium and an organic material dispersed in the second dispersion medium, the organic material generates lewis acid by light irradiation, and the diffusion layer 30 changes color by contact of the lewis acid and the dye at a temperature higher than an indication temperature.
In this embodiment, the diffusion layer 30 is disposed between the dye layer 20 and the color-developing material layer 40, the organic material in the color-developing material layer 40 is selected from one or more of diaryliodonium salt, triarylsulfonium salt, alkylsulfonium salt, iron arene salt, sulfonyloxy ketone, and triarylsiloxy ether, and the material is excited by light irradiation to generate intramolecular decomposition reaction, which can produce lewis acid, and in this embodiment, the lewis acid is a cation. For example, the organic material is selected from diaryliodonium salts that undergo a sensitizing photolysis reaction when irradiated with ultraviolet light (UV light) or blue light having a wavelength in the range of 100-. In the embodiment, the material of the diffusion layer 30 is selected to be a polymer having a certain glass transition temperature (Tg value), so that when the temperature indicating label is exposed to a temperature lower than the glass transition temperature of the diffusion layer 30 (i.e., the indication temperature of the temperature indicating label) after the illumination of the temperature indicating label is started, the polymer in the diffusion layer 30 is in a hard glass state, and the lewis acid generated in the color developing material layer 40 cannot penetrate through the diffusion layer 30. On the contrary, when the temperature of the temperature indicating label is higher than the glass transition temperature of the diffusion layer 30, the polymer in the diffusion layer 30 is converted into a high elastic state, the diffusion layer becomes soft, lewis acid can penetrate through the diffusion layer 30 to reach the dye layer 20 to react with the dye in the dye layer 20, so that the dye leuco body reacts to generate a colored polymer film, thereby generating color change, and the colored polymer film has stable and irreversible properties, so that the color of the label after color change is always kept. The dye is selected from one or more of bromothymol blue, bromocresol green, methyl yellow, methyl orange, bromocresol green, phenolphthalein, green pigment-5, red pigment-16, melanin-1, crystal violet lactone, and benzoyl colorless methylene blue.
In this embodiment, the material of the diffusion layer 30 is an acrylic polymer, a silicone polymer, or an olefin polymer, and the thickness of the diffusion layer 30 is in the range of 1 to 500 μm. For example, acrylic type selected from the group consisting of the Suzhou cony Xin electronic technology acrylic pressure sensitive adhesive PSA102 (glass transition temperature of-35 ℃) or the thermoplastic acrylic resin BR-113 from Mitsubishang BR-113 (glass transition temperature of 75 ℃), silicone type selected from the group consisting of the Suzhou beruli silicone BQ-1054 (glass transition temperature of-45 ℃), and rubber type selected from the group consisting of the Japanese cola liquid rubber LIR-30 (glass transition temperature of-63 ℃).
In the embodiment, the temperature indication label which is not subjected to light irradiation does not change color even when being in a temperature environment higher than the color change temperature, the temperature indication label is started through light irradiation, namely, a light starting switch is arranged, when the temperature indication label needs to be started, the temperature indication label can be started only through light irradiation, transportation and storage are facilitated, and the reliability is high. Meanwhile, by selecting polymers with different glass transition temperatures as the diffusion layers, for example, the selected glass transition temperature range of the diffusion layers is-65 ℃ to 80 ℃ (namely, -65 ℃ to 80 ℃), the indication temperature range of the correspondingly formed temperature indication label is-65 ℃ to 80 ℃ (namely, -65 ℃ to 80 ℃), and in this embodiment, different temperature indication requirements of the temperature indication label can be realized by selecting diffusion layer materials with different glass transition temperatures. In this embodiment, the reaction speed of the lewis acid and the dye has a direct relationship with the ambient temperature and the time, and a certain time is required for the lewis acid to pass through the diffusion layer 30, so that the temperature can be indicated and the timing function can be realized by comparing the change of the color according to the specific relationship parameters. Meanwhile, in this embodiment, the requirements of the temperature indication labels with different time requirements can be synchronously realized by adjusting the thickness of the diffusion layer 30, which is not described in detail.
In this embodiment, the first dispersion medium and the second dispersion medium are used to disperse the dye and the organic material, and the material may be one or more selected from acrylic glue, polyurethane glue, silicone glue, and epoxy glue. For example, the first dispersion medium and the second dispersion medium are selected from the group consisting of acrylic pressure sensitive adhesive PSA188 from cornsin, suzhou.
In this embodiment, the first substrate layer 10 and the second substrate layer 50 are selected from one or more of polymer materials such as PET (polyethylene terephthalate), PEN (polyethylene naphthalate), PC (polycarbonate), PP (polypropylene), PMMA (polymethyl methacrylate), PBT (polybutylene terephthalate), PVC (polyvinyl chloride), PI (polyimide), and cellulose, and preferably, at least one of the first substrate layer 10 and the second substrate layer 50 is a transparent substrate, or both of them are transparent substrates, so that the color change of the temperature indication label can be observed through the transparent substrate after the color change.
In this embodiment, for example, the process of forming the dye layer 20 includes: the method comprises the steps of preparing a red pigment-16 containing 0.1-33wt% of dye, a first dispersion medium (selected from acrylic pressure-sensitive adhesive PSA188 of Kangxin electronic technology company, Suzhou) containing 10-35wt% of ethyl acetate as a solvent, uniformly mixing the materials, forming the mixture on a first substrate layer 10 by adopting a film forming process, heating to evaporate the solvent (ethyl acetate) to form a film, and forming the dye layer 20 on the first substrate layer 10. The forming process of the color-developing substance layer 40 includes: preparing 0.1-25wt% diaryl iodonium salt, 10-35wt% second dispersion medium (selected from acrylic pressure sensitive adhesive PSA188 of Cor you Xin electronic technology company, Suzhou) and 40-89.9wt% ethyl acetate as solvents, uniformly mixing, forming on the second substrate layer 50 by adopting a film forming process, heating to evaporate the solvent (ethyl acetate), and forming a film, namely forming the color developing substance layer 40 on the second substrate layer 50.
In this embodiment, for example, the acrylic pressure sensitive adhesive PSA102 of scomith conysxin electronic technology ltd is used as the diffusion layer 30, the thickness of the diffusion layer 30 is 50 micrometers, the dye is haematochrome-16, the organic material is diaryliodonium salt, the first dispersion medium and the second dispersion medium are both acrylic pressure sensitive adhesive PSA188 of scomith conysxin electronic technology ltd, the test results are shown in fig. 2 and 3, fig. 2 is a temperature-time curve when the temperature indication label of the first embodiment of the present invention starts to develop color, fig. 3 is a temperature-time curve when the temperature indication label of the first embodiment of the present invention reaches the end point of color development (when the color change stops), and as can be seen by combining fig. 2 and 3, the temperature indication label of this embodiment can realize accurate timing under different temperature environments, and the color of the temperature indication label gradually changes and deepens with the time and temperature rise, the color change process is irreversible, the time that the environment temperature is higher than the indicated temperature can be indicated through comparison with the standard color, and the temperature indication label of the embodiment can be applied to the application fields with strict requirements on the environment temperature where articles are located, such as vaccines, cold chain transportation and the like.
The temperature indication label of this embodiment, accessible light irradiation starts, is convenient for transport and deposits, has small, simple structure, low cost, makes things convenient for volume production, the obvious advantage of colour change contrast simultaneously.
Second embodiment:
in this embodiment, the same parts as those in the first embodiment are not repeated, and the difference is that the temperature indication label of this embodiment further includes a shielding layer located outside the first substrate layer, fig. 4 is a schematic cross-sectional structure diagram of the temperature indication label of the second embodiment of the present invention, as shown in fig. 4, in this embodiment, the shielding layer 60 is located outside the first substrate layer 10, and the shielding layer 60 has an observation window region 61. The shielding layer 60 is arranged to optimize the overall appearance of the temperature indicating label, so that the temperature indicating label can be developed in different shapes or patterns as required, and preferably, the part of the shielding layer 60 except the observation window region 61 is arranged to be an opaque region or other color region, for example, at least part of the shielding layer is arranged to be a contrast color region, so as to facilitate color comparison after the temperature indicating label is developed.
In this embodiment, preferably, the shielding layer 60 further has one or more of an electronic identification tag, a two-dimensional code, a barcode, or other electronic identification patterns, so as to facilitate the functions of performing anti-counterfeit identification, electronic data tracking, and query on the temperature indication tag. The electronic identification label, the two-dimensional code, the barcode or other electronic identification patterns may be attached to one side of the shielding layer 60, or may be a two-dimensional code, a barcode or other electronic identification patterns printed by the shielding layer 60 itself, which is not particularly limited.
In this embodiment, the structure and material selection of the dye layer 20 and the color-developing material layer 40 are the same as those in the first embodiment, and are not repeated. The temperature indication label of this embodiment, accessible light irradiation starts, is convenient for transport and deposits, has small, simple structure, low cost, makes things convenient for volume production, the obvious advantage of colour change contrast simultaneously.
Fig. 5 is a schematic view of several general structures of the temperature indicating label of the present invention. The shape of the temperature indicating label of the present invention can be set to various structural shapes according to actual needs, for example, it can be set to a label structure of a figure of a circle, an ellipse, a triangle, a square, a pentagon, a hexagon, a rectangle, other polygons or other arbitrary shapes, and the observation window region 61 can also be set to a figure structure of a bar, a circle, an ellipse, a triangle, a square, a pentagon, a hexagon, a rectangle, other polygons or other arbitrary shapes, which is not described again. In addition, the temperature indicating label of the invention can be provided with a protective layer, a contrast color layer and the like on the outer layer according to needs, and can be provided with other additional specific applicable structures or functional structures such as an adhesive layer and a release film layer on the bottom layer, which are not listed.
The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.
Claims (9)
1. The temperature indication label is characterized by comprising a first substrate layer, a dye layer, a diffusion layer, a color development substance layer and a second substrate layer which are sequentially arranged, wherein the dye layer comprises a first dispersion medium and a dye dispersed in the first dispersion medium, the color development substance layer comprises a second dispersion medium and an organic material dispersed in the second dispersion medium, and the diffusion layer is made of an acrylic polymer, an organic silicon polymer or an olefin polymer; the organic material is irradiated to generate Lewis acid, the Lewis acid is contacted with the dye to change the color of the diffusion layer above the indicated temperature, the indicated temperature ranges from-65 ℃ to 80 ℃, and the thickness of the diffusion layer ranges from 1 micron to 500 microns.
2. The temperature indicating label of claim 1, wherein the organic material is selected from one or more of diaryliodonium salts, triarylsulfonium salts, alkylsulfonium salts, iron arene salts, sulfonyloxy ketones, and triarylsiloxy ethers.
3. The temperature indicating label of claim 2, wherein the lewis acid is a cation.
4. The temperature indicating label of claim 2, wherein the illumination is ultraviolet and blue light having a wavelength in the range of 100 and 480 nm.
5. The temperature indicating label of claim 1, wherein the first dispersion medium and the second dispersion medium are selected from one or more of an acrylic glue, a polyurethane glue, a silicone glue, and an epoxy glue.
6. The temperature indicating label according to claim 1, wherein the dye is selected from one or more of bromothymol blue, bromocresol green, methyl yellow, methyl orange, phenolphthalein, green pigment-5, red pigment-16, melanin-1, crystal violet lactone, benzoyl leuco methylene blue.
7. The temperature indicating label according to claim 1, characterized in that the first and second substrate layers are selected from one or more of the group of polymer materials consisting of PET, PEN, PC, PP, PMMA, PBT, PVC, PI, cellulose and the like.
8. The temperature indicating label of claim 1, further comprising a barrier layer located outside the second substrate layer, the barrier layer having an observation window region thereon.
9. The temperature indicating label of claim 8, wherein the shielding layer has one or more of an electronic identification label, a two-dimensional code, a bar code, or other electronic identification pattern thereon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010199520.5A CN111276035B (en) | 2020-03-20 | 2020-03-20 | Temperature indicating label |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010199520.5A CN111276035B (en) | 2020-03-20 | 2020-03-20 | Temperature indicating label |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111276035A CN111276035A (en) | 2020-06-12 |
| CN111276035B true CN111276035B (en) | 2022-04-12 |
Family
ID=71002566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010199520.5A Active CN111276035B (en) | 2020-03-20 | 2020-03-20 | Temperature indicating label |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111276035B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112489553A (en) * | 2020-12-08 | 2021-03-12 | 上海海洋大学 | Cold chain logistics intelligent indicating label |
| CN112581856B (en) * | 2020-12-29 | 2022-07-19 | 苏州和萃新材料有限公司 | Temperature indicating label |
| CN112577626A (en) * | 2020-12-29 | 2021-03-30 | 苏州和萃新材料有限公司 | Timing temperature indicating label |
| CN112724746A (en) * | 2020-12-29 | 2021-04-30 | 苏州和萃新材料有限公司 | Temperature-change timing ink and label |
| CN112652230A (en) * | 2020-12-29 | 2021-04-13 | 苏州和萃新材料有限公司 | Irreversible temperature sensing timing label |
| CN113720491A (en) * | 2021-09-22 | 2021-11-30 | 江苏集萃智能液晶科技有限公司 | Temperature-sensitive color-changing indicating device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1759150A (en) * | 2003-01-11 | 2006-04-12 | 坎梅陶尔股份有限公司 | Method for coating metallic surfaces, coating composition, and coatings produced in said manner |
| CN101136477A (en) * | 2006-08-31 | 2008-03-05 | 比亚迪股份有限公司 | Method for activating membrane electrode of fuel cell |
| CN104604551A (en) * | 2015-01-29 | 2015-05-13 | 宁波远鸿生物科技有限公司 | Method for preparing thermochromic preserved flowers |
| CN106461820A (en) * | 2014-06-10 | 2017-02-22 | 木本股份有限公司 | Light diffusing sheet, and backlight device comprising said sheet |
| CN107935720A (en) * | 2017-12-13 | 2018-04-20 | 烟台燕晟信息技术有限公司 | A kind of preparation method of interpenetrating networks coating dyeing fertilizer |
| CN209118631U (en) * | 2018-12-24 | 2019-07-16 | 上海明利包装印刷有限公司 | A kind of warming label |
| CN209541944U (en) * | 2019-04-15 | 2019-10-25 | 江苏集萃智能液晶科技有限公司 | A kind of timing temperature indicating labels |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5582887A (en) * | 1989-08-17 | 1996-12-10 | The Kendall Company | Tamper-evident tape having discontinuous barrier layer |
| KR100873579B1 (en) * | 2008-07-21 | 2008-12-12 | 송원영 | Indicated label for temperature changing history of refrigerated or frozen product |
| CN109118946A (en) * | 2017-06-23 | 2019-01-01 | 江苏万宝瑞达高新技术有限公司 | A kind of anti-strike-through colour fading thermal label |
| CN110674911A (en) * | 2019-09-12 | 2020-01-10 | 上海仪电特镭宝信息科技有限公司 | Aviation printing luggage RFID label |
-
2020
- 2020-03-20 CN CN202010199520.5A patent/CN111276035B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1759150A (en) * | 2003-01-11 | 2006-04-12 | 坎梅陶尔股份有限公司 | Method for coating metallic surfaces, coating composition, and coatings produced in said manner |
| CN101136477A (en) * | 2006-08-31 | 2008-03-05 | 比亚迪股份有限公司 | Method for activating membrane electrode of fuel cell |
| CN106461820A (en) * | 2014-06-10 | 2017-02-22 | 木本股份有限公司 | Light diffusing sheet, and backlight device comprising said sheet |
| CN104604551A (en) * | 2015-01-29 | 2015-05-13 | 宁波远鸿生物科技有限公司 | Method for preparing thermochromic preserved flowers |
| CN107935720A (en) * | 2017-12-13 | 2018-04-20 | 烟台燕晟信息技术有限公司 | A kind of preparation method of interpenetrating networks coating dyeing fertilizer |
| CN209118631U (en) * | 2018-12-24 | 2019-07-16 | 上海明利包装印刷有限公司 | A kind of warming label |
| CN209541944U (en) * | 2019-04-15 | 2019-10-25 | 江苏集萃智能液晶科技有限公司 | A kind of timing temperature indicating labels |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111276035A (en) | 2020-06-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111276035B (en) | Temperature indicating label | |
| Wang et al. | Review of time temperature indicators as quality monitors in food packaging | |
| US4070912A (en) | Temperature indicating compositions and devices | |
| US20210389190A1 (en) | Thermochromic ink indicia for activatable quality labels | |
| EP1283992B1 (en) | Microstructured time dependent indicators | |
| CN103048063B (en) | According to the time temperature indicator that chromatography and photonic crystal lattice change | |
| US11131656B2 (en) | Dual-function heat indicator and method of manufacture | |
| JP2007506143A (en) | Flash imaging apparatus, manufacturing method and usage thereof | |
| US20100043694A1 (en) | Tamper evident indicating devices | |
| CN109476262A (en) | Anti-counterfeiting detection is carried out to optical activity product using security factor | |
| WO2008112811A2 (en) | Physical/chemical uniform pressure indicating constructs including chemistries, films and devices configurations | |
| Kulčar et al. | Dynamic colour possibilities and functional properties of thermochromic printing inks | |
| US11241902B1 (en) | Environmental history monitor with positional displacement and security features | |
| US9310311B2 (en) | Time validation indicator | |
| CN111833718A (en) | Temperature indicating label | |
| US20100263244A1 (en) | Labels and taggants with programmable multi color coded timing | |
| CN112577626A (en) | Timing temperature indicating label | |
| CN112652230A (en) | Irreversible temperature sensing timing label | |
| KR20130134688A (en) | Label for care of quality condition in product | |
| CN213812645U (en) | Upper critical temperature indicator | |
| JP6511408B2 (en) | Temperature history indicator, method of manufacturing the same, and method of using the same | |
| CN108776416A (en) | A kind of electroluminescent alkali change colour response film | |
| CN113741110A (en) | Thermosensitive color-changing bistable display | |
| CN113720491A (en) | Temperature-sensitive color-changing indicating device | |
| TW202130511A (en) | Optical laminate and image displaying device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |