CN112581856B - Temperature indicating label - Google Patents
Temperature indicating label Download PDFInfo
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- CN112581856B CN112581856B CN202011594624.2A CN202011594624A CN112581856B CN 112581856 B CN112581856 B CN 112581856B CN 202011594624 A CN202011594624 A CN 202011594624A CN 112581856 B CN112581856 B CN 112581856B
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- temperature indicating
- indicating label
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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
- 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
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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
- G09F3/0297—Forms or constructions including a machine-readable marking, e.g. a bar code
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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
- G09F2003/0257—Multilayer
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- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention discloses a temperature indicating label, which comprises a first substrate layer, a colored dye layer, a diffusion layer, a fading substance layer and a second substrate layer which are sequentially arranged, wherein the colored dye layer comprises a first dispersion medium and a colored dye dispersed in the first dispersion medium, the colored dye is a product of a mixed reaction of a recessive dye and a material for providing an oxidizing substance, the fading substance layer comprises a second dispersion medium and a fading material dispersed in the second dispersion medium, the fading material is heated to generate a basic substance, and the diffusion layer enables the basic substance to be in contact with the colored dye to fade above an indicating temperature. The temperature indicating label can be started by heating, 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 transportation or storage, the responsible party is difficult to identify.
In the prior art, as mentioned in the chinese patent application No. CN200420078916.0, the capillary action principle of a simple thermometer is used 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 components 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 patent publication number of CN1533518A applied in china, a solution gradually permeates into an observation area after a capsule filled with a solvent is crushed, and the color-changing label device can lose efficacy within a few minutes for a short person and a few hours for a later person after being used, only can 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 limits the popularization and application of the color-changing label device. Vaccine thermal label VVM (vaccine visual monitor) recommended by WHO official in the field of vaccine temperature monitoring at present has the problems of cost caused by low-temperature production and low-temperature transportation and unobvious failure color. The patent publication No. CN103903509B of 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 temperature indicating label which is convenient to use, small in size, simple in structure, low in cost, convenient to produce in mass production and obvious in color change contrast.
Disclosure of Invention
The invention aims to provide a temperature indicating label which is convenient to use, 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 10, coloured dyestuff layer 20, diffuse layer 30, the material layer 40 and the second substrate layer 50 that fade that set gradually, coloured dyestuff layer 20 include first dispersion medium and disperse in coloured dyestuff in the first dispersion medium, coloured dyestuff is the resultant of the material mixed reaction by recessive dyestuff and the material that provides the oxidizing substance, fade material layer 40 include second dispersion medium and disperse in fade the material in the second dispersion medium, fade the material and generate alkaline substance by heating, diffuse layer 30 makes when the environment more than the instruction temperature alkaline substance with coloured dyestuff contact takes place to fade.
Preferably, the indicated temperature ranges from-65 ℃ to 80 ℃.
Preferably, the material providing the oxidizing substance includes a lewis acid providing material or an oxidizing metal ion providing material or a hydrogen ion providing material.
Preferably, the lewis acid providing material is selected from one or more of diaryliodonium salts, triarylsulfonium salts, alkylsulfonium salts, iron arene salts, sulfonyloxy ketones, and triarylsiloxy ethers.
Preferably, the material providing the oxidizing metal ions is selected from one or more of salts containing metal ions of K, Ca, Na, Mg, Al, Zn, Fe, Sn, Pb, Cu, Hg, Ag, Pt, Au.
Preferably, the material providing hydrogen ions is selected from one or more of bisphenol a, bisphenol F, bisphenol S, 4-hydroxy-4' -isopropoxydiphenyl sulfone, DBSP (2, 4-diphenyl sulfone phenol).
Preferably, the material of the diffusion layer 30 is an acrylic polymer, a silicone-based polymer, or an olefin-based polymer.
Preferably, the diffusion layer 30 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 leuco dye is selected from fluoran-based dyes or triarylmethane-based dyes.
Preferably, the fluorane-based dye or triarylmethane-based dye is selected from the group consisting of blue-8, green-5, red-16, melanin-1, crystal violet lactone, thermosensitive scarlet dye, 3-bis (N-octyl-2-methylindole) phthalide, 6' - (diethylamino) -1',3' -dimethylfluoran, 3-diethylamino-6-chlorofluoran, 6-dimethylamino-3, 3-bis (4-dimethylaminophenyl) phthalide, leuco crystal violet, 7- [4- (diethylamino) -2-ethoxyphenyl ] -7- (2-methyl-1-octyl-1H-indol-3-yl) 3,4-B ] pyridin-5 (7H) -one, 4'- [ (9-butyl-9H-carbazol-3-yl) methylene ] bis [ N-methyl-N-phenylaniline ], 2-phenylamino-3-methyl-6-dibutylamino-fluoran, 2-phenylamino-3-methyl-6-diethylaminofluoran, 3',6' -dimethoxy fluorane, 3-bis (4-diethylamino-2-ethoxy phenyl) -4-aza phthalide, thermo (pressure) quick green TF-G, and one or more of 3- (N-ethyl-4-toluidino) -6-methyl-7-anilinofluorane.
Preferably, the fading materials are selected from imidazoles and derivatives or mixtures thereof, aliphatic amines, alcamines, amides, alicyclic amines, aromatic amines, naphthyl amines and other amine materials.
Preferably, the imidazoles and derivatives or mixtures thereof are selected from the group consisting of 1-vinylimidazole, N-ethylimidazole, 2-bromo-4-nitroimidazole, 1, 2-dimethylimidazole, 4-nitroimidazole, benzimidazole, 1-N-butylimidazole, 4-iodo-1H-imidazole, 1- (4-nitrobenzyl) imidazole, 1- (4-aminobenzyl) imidazole, 2,5, 6-trimethylbenzimidazole, 2- (trifluoromethyl) benzimidazole, 2-hydroxybenzimidazole, 1-tritylimidazole, 2,4, 5-triiodoimidazole, 4, 5-diiodo-1H-imidazole, 1-ethyl-3-methylimidazole iodide, 1-octyl-3-methylimidazole chloride, 1-allyl-3-methylimidazole chloride, 1- (2,4, 6-triisopropylphenylsulfonyl) imidazole, 2-mercaptomethylbenzimidazole, 1- (4-formylphenyl) imidazole, 1- (4-nitrophenyl) -1H-imidazole, 1- (4-aminophenyl) imidazole, N-propylimidazole, N-acetylimidazole, 2-chloro-4-nitroimidazole, 2-mercapto-1-methylimidazole, 2-undecylimidazole, 2, 4-dimethylimidazole, 4, 5-diphenylimidazole, 4-azabenzimidazole, 2-methylimidazole, 4-iodoimidazole, 2-ethylimidazole, 2-phenylimidazole, 1-cyanoethyl-2-ethyl-4-methylimidazole, 1-cyanoethyl-2-phenylimidazole, an adduct of 2-methylimidazole and butyl glycidyl ether, and an adduct of 2-methylimidazole and 2-ethylhexyl glycidyl ether.
Preferably, the aliphatic amine is selected from one or more of monomethylamine, monopropylamine, 2-allylamine, tert-butylamine, decylamine, dimethylamine, dipropylamine, cyclopropylamine, diisobutylamine, dodecylamine, trimethylamine, tripropylamine, n-butylamine, hexylamine, hexadecylamine, monoethylamine, isopropylamine, di-n-butylamine, 2-ethylhexylamine, octadecylamine, diethylamine, diisopropylamine, isobutylamine, hexamethylenediamine, distearylamine, triethylamine, 1, 2-dimethylpropylamine, sec-butylamine, trioctylamine, 1, 5-dimethylhexylamine, ethylenediamine, 1, 2-propylenediamine, 1, 4-butylenediamine, 1, 10-decylamine.
Preferably, the alkanolamines are selected from one or more of monoethanolamine, diethanolamine, triethanolamine, 3-propanolamine, monoisopropanolamine, diisopropanolamine, triisopropanolamine, N-dimethylethanolamine, N-diethylethanolamine.
Preferably, the amide is selected from one or more of formamide, acetamide, propionamide, butyramide, isobutyramide, acrylamide, polyacrylamide, caprolactam, Dimethylformamide (DMF), Dimethylacetamide (DMAC).
Preferably, the alicyclic amine is selected from one or more of triethylenediamine, diethylenetriamine, hexamethylenetetramine, hexamethyleneimine, triethylenediamine, cyclic ethyleneimine, morpholine, piperazine, and cyclohexylamine.
Preferably, the aromatic amines are selected from aniline, diphenylamine, benzidine, o-phenylenediamine, m-phenylenediamine, p-phenylenediamine, o-toluidine, m-toluidine, p-toluidine, 2, 3-dimethylaniline, 2, 4-dimethylaniline, 2, 5-dimethylaniline, 2, 6-dimethylaniline, 3, 4-dimethylaniline, 3, 5-dimethylaniline, 2,4, 6-trimethylaniline, o-ethylaniline, N-butylaniline, 2, 6-diethylaniline, N-formanilide, p-butylaniline, N-acetanilide, 3-methoxyaniline, o-chloroaniline, m-chloroaniline, p-chloroaniline, o-ethoxyaniline, m-ethoxyaniline, p-ethoxyaniline, N-methylaniline, 2, 3-dichloroaniline, m-methylaniline, p-methylaniline, p-methylaniline, p-methylaniline, p-methylaniline, p-methylaniline, and p-methylaniline, p-methylaniline, p-methylaniline, p, 2, 4-dichloroaniline, 2, 6-dichloroaniline, 3, 4-dichloroaniline, 3, 5-dichloroaniline, 2, 5-dichloroaniline, N-ethylaniline, N-diethylaniline, N-dimethylaniline, o-bromoaniline, m-bromoaniline, p-bromoaniline, 2,4, 5-trichloroaniline, 2,4, 6-trichloroaniline, 2, 4-dibromoaniline, 2, 5-dibromoaniline, 2, 6-dibromoaniline, o-fluoroaniline, m-fluoroaniline, p-fluoroaniline, 2, 4-difluoroaniline, 3, 4-difluoroaniline, 2,3, 4-trifluoroaniline, o-nitroaniline, m-nitroaniline, p-nitroaniline, 2, 4-dinitroaniline, 3-chloro-4-fluoroaniline, One or more of o-nitro-p-toluidine.
Preferably, the naphthalene amines are selected from one or more of 1-naphthylamine, 2-naphthylamine, phthalimide, naphthalene diamine, Ethylene Bis Stearamide (EBS)
Preferably, the other amines are selected from one or more of polyethyleneimine, hydroxylamine.
Preferably, the first substrate layer 10 and the second substrate layer 50 are selected from one or more of PET, PEN, PC, PP, PMMA, PBT, PVC, PI, cellulose.
Preferably, the display device further comprises a shielding layer 60 positioned outside the first substrate layer 10, and the shielding layer 60 has a viewing window region 61 thereon.
Preferably, the shielding layer 60 has one or more of an electronic identification tag, a two-dimensional code, a bar code or other electronic identification patterns thereon.
The temperature indicating label can be started by heating, 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 for the onset of fading of a temperature indicating label according to a first embodiment of the present invention;
FIG. 3 is a temperature-time curve for the time at which the end of the fade of the temperature indicating label of the first embodiment of the present invention is reached;
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 overall configurations of the temperature indicating label of the present invention.
Detailed Description
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 indication label according to a first embodiment of the present invention, as shown in fig. 1, the temperature indication label of this embodiment includes a first substrate layer 10, a colored dye layer 20, a diffusion layer 30, a fading substance layer 40, and a second substrate layer 50, which are sequentially disposed, the colored dye layer 20 includes a first dispersion medium and a colored dye dispersed in the first dispersion medium, the colored dye is a product of a mixed reaction of a recessive dye and a material providing an oxidizing substance, the fading substance layer 40 includes a second dispersion medium and a fading material dispersed in the second dispersion medium, the fading material generates a basic substance by heating, and the diffusion layer 30 brings the basic substance into contact with the colored dye to fade when in an environment above an indication temperature.
In this embodiment, the diffusion layer 30 is disposed between the color dye layer 20 and the fading material layer 40, the fading material in the fading material layer 40 is selected from one or more of imidazoles and derivatives or mixtures thereof, aliphatic amines, alcamines, amides, alicyclic amines, aromatic amines, naphthalene amines, and other amine materials, and the above substances are excited by heat, and decomposition reaction occurs in molecules to produce alkaline substances.
The imidazoles and their derivatives or mixtures are selected from the group consisting of 1-vinylimidazole, N-ethylimidazole, 2-bromo-4-nitroimidazole, 1, 2-dimethylimidazole, 4-nitroimidazole, benzimidazole, 1-N-butylimidazole, 4-iodo-1H-imidazole, 1- (4-nitrobenzyl) imidazole, 1- (4-aminobenzyl) imidazole, 2,5, 6-trimethylbenzimidazole, 2- (trifluoromethyl) benzimidazole, 2-hydroxybenzimidazole, 1-tritylimidazole, 2,4, 5-triiodoimidazole, 4, 5-diiodo-1H-imidazole, 1-ethyl-3-methylimidazole iodide, 1-octyl-3-methylimidazole chloride, 1-allyl-3-methylimidazole chloride, 1- (2,4, 6-triisopropylphenylsulfonyl) imidazole, 2-mercaptomethylbenzimidazole, 1- (4-formylphenyl) imidazole, 1- (4-nitrophenyl) -1H-imidazole, 1- (4-aminophenyl) imidazole, N-propylimidazole, N-acetylimidazole, 2-chloro-4-nitroimidazole, 2-mercapto-1-methylimidazole, 2-undecylimidazole, 2, 4-dimethylimidazole, 4, 5-diphenylimidazole, 4-azabenzimidazole, 2-methylimidazole, 4-iodoimidazole, 2-ethylimidazole, 2-phenylimidazole, 1-cyanoethyl-2-ethyl-4-methylimidazole, 1-cyanoethyl-2-phenylimidazole, an adduct of 2-methylimidazole and butyl glycidyl ether, and an adduct of 2-methylimidazole and 2-ethylhexyl glycidyl ether. The aliphatic amine is selected from one or more of monomethylamine, monopropylamine, 2-allylamine, tert-butylamine, decylamine, dimethylamine, dipropylamine, cyclopropylamine, diisobutylamine, dodecylamine, trimethylamine, tripropylamine, n-butylamine, hexylamine, hexadecylamine, monoethylamine, isopropylamine, di-n-butylamine, 2-ethylhexylamine, octadecylamine, diethylamine, diisopropylamine, isobutylamine, hexamethylenediamine, distearylamine, triethylamine, 1, 2-dimethylpropylamine, sec-butylamine, trioctylamine, 1, 5-dimethylhexylamine, ethylenediamine, 1, 2-propylenediamine, 1, 4-butylenediamine, 1, 10-decylamine. The alcamines are selected from one or more of monoethanolamine, diethanolamine, triethanolamine, 3-propanolamine, monoisopropanolamine, diisopropanolamine, triisopropanolamine, N-dimethylethanolamine and N, N-diethylethanolamine. The amide is selected from one or more of formamide, acetamide, propionamide, butyramide, isobutyramide, acrylamide, polyacrylamide, caprolactam, Dimethylformamide (DMF) and Dimethylacetamide (DMAC). The alicyclic amine is selected from one or more of triethylene diamine, diethylene triamine, hexamethylene tetramine, hexamethylene imine, triethylene diamine, cyclic ethylene imine, morpholine, piperazine and cyclohexylamine. The aromatic amines are selected from aniline, diphenylamine, benzidine, o-phenylenediamine, m-phenylenediamine, p-phenylenediamine, o-toluidine, m-toluidine, p-toluidine, 2, 3-dimethylaniline, 2, 4-dimethylaniline, 2, 5-dimethylaniline, 2, 6-dimethylaniline, 3, 4-dimethylaniline, 3, 5-dimethylaniline, 2,4, 6-trimethylaniline, o-ethylaniline, N-butylaniline, 2, 6-diethylaniline, N-formanilide, p-butylaniline, N-acetanilide, 3-methoxyaniline, o-chloroaniline, m-chloroaniline, p-chloroaniline, o-ethoxyaniline, m-ethoxyaniline, p-ethoxyaniline, N-methylaniline, 2, 3-dichloroaniline, 2, 4-dichloroaniline, 2, 6-dichloroaniline, 3, 4-dichloroaniline, 3, 5-dichloroaniline, 2, 5-dichloroaniline, N-ethylaniline, N-diethylaniline, N, one or more of N-dimethylaniline, o-bromoaniline, m-bromoaniline, p-bromoaniline, 2,4, 5-trichloroaniline, 2,4, 6-trichloroaniline, 2, 4-dibromoaniline, 2, 5-dibromoaniline, 2, 6-dibromoaniline, o-fluoroaniline, m-fluoroaniline, p-fluoroaniline, 2, 4-difluoroaniline, 3, 4-difluoroaniline, 2,3, 4-trifluoroaniline, o-nitroaniline, m-nitroaniline, p-nitroaniline, 2, 4-dinitroaniline, 3-chloro-4-fluoroaniline and o-nitro-p-toluidine. The naphthalene amine is selected from one or more of 1-naphthylamine, 2-naphthylamine, phthalimide, naphthalene diamine, and Ethylene Bis Stearamide (EBS). The other amines are selected from one or more of polyethyleneimine and hydroxylamine.
In this embodiment, the material that provides the oxidizing substance includes a material that provides a lewis acid or a material that provides an oxidizing metal ion or a material that provides a hydrogen ion. The material for providing Lewis acid is one or more selected from diaryl iodonium salt, triaryl sulfonium salt, alkyl sulfonium salt, iron arene salt, sulfonyloxy ketone and triaryl siloxy ether; the material for providing the oxidizing metal ions is one or more selected from salts containing K, Ca, Na, Mg, Al, Zn, Fe, Sn, Pb, Cu, Hg, Ag, Pt and Au metal ions; the material for providing hydrogen ions is selected from one or more of bisphenol A, bisphenol F, bisphenol S, 4-hydroxy-4' -isopropoxydiphenyl sulfone and DBSP (2, 4-diphenyl sulfone phenol). The material providing the oxidizing substance is capable of reacting with the leuco dye to produce a colored dye.
In this example, the leuco dye is a fluorane dye or a triarylmethane dye, and the fluorane dye or triarylmethane dye is selected from the group consisting of cyanine-8, cyanine-5, haematochrome-16, melanin-1, crystal violet lactone, thermal scarlet dye, 3-bis (N-octyl-2-methylindole) phthalide, 6' - (diethylamino) -1',3' -dimethylfluorane, 3-diethylamino-6-chlorofluorane, 6-dimethylamino-3, 3-bis (4-dimethylaminophenyl) phthalide, leuco crystal violet, 7- [4- (diethylamino) -2-ethoxyphenyl ] -7- (2-methyl-1-octyl-1H-indol-3-yl) 3,4-B ] pyridin-5 (7H) -one, 4'- [ (9-butyl-9H-carbazol-3-yl) methylene ] bis [ N-methyl-N-phenylaniline ], 2-phenylamino-3-methyl-6-dibutylamino-fluoran, 2-phenylamino-3-methyl-6-diethylaminofluoran, 3',6' -dimethoxy fluorane, 3-bis (4-diethylamino-2-ethoxy phenyl) -4-aza phthalide, thermo (pressure) quick green TF-G, and one or more of 3- (N-ethyl-4-toluidino) -6-methyl-7-anilinofluorane.
In this embodiment, the diffusion layer 30 is made of a polymer having a certain glass transition temperature (Tg), so that when the temperature indicator label is heated and is at a temperature lower than the glass transition temperature of the diffusion layer 30 (i.e., the indication temperature of the temperature indicator label), the polymer in the diffusion layer 30 is in a hard glass state, and the alkaline substance generated in the fading substance 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, the alkaline substance can pass through the diffusion layer 30 to reach the colored dye layer 20, and reacts with the colored dye in the colored dye layer 20, so that the colored dye reacts to generate a colorless substance, thereby generating a color change, and the reaction is stable and irreversible, so that the color of the label after fading is always kept.
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 is started through the heated temperature indication label, which is equivalent to setting a starting switch, when the temperature indication label needs to be started, the temperature indication label can be started only through the temperature, 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 speed of the reaction between the basic substance and the colored dye has a direct relationship with the ambient temperature and the time, and a certain time is required for the basic substance to pass through the diffusion layer 30. 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 for dispersing the color dye and the fading 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 can be observed through the transparent substrate after the temperature indication label fades.
In this embodiment, for example, the forming process of the color dye layer 20 includes: the method comprises the steps of preparing 0.1-15 wt% of haematochrome-16 as a dye, 0.1-15 wt% of diaryl iodonium salt, 10-38 wt% of a first dispersion medium (selected from acrylic pressure sensitive adhesive PSA188 of Kangxin electronic technology company, Suzhou) and 32-89.8 wt% of ethyl acetate as solvents, uniformly mixing, forming the mixture on a first substrate layer 10 by adopting a film forming process, heating to evaporate the solvent (ethyl acetate), and performing ultraviolet excitation to form a film, so that the colored dye layer 20 can be formed on the first substrate layer 10. The fade material layer 40 is formed by a process comprising: preparing a second dispersion medium (selected from acrylic pressure-sensitive adhesive PSA188 of the Suzhou conyouxin electronic technology company) containing 0.1-25 wt% of 1-n-butylimidazole and 10-35 wt% of ethyl acetate as a solvent, uniformly mixing, forming the mixture on the second substrate layer 50 by adopting a film forming process, heating to evaporate the solvent (ethyl acetate), and forming a film to form the fading substance layer 40 on the second substrate layer 50.
In this embodiment, for example, the acrylic pressure sensitive adhesive PSA102 of scomith conyssin electronic technology ltd is used as the diffusion layer 30, the thickness of the diffusion layer 30 is 50 micrometers, the color dye is a mixture of haematochrome-16 and diaryliodonium salts, the organic fading material is 1-n-butylimidazole, the first dispersion medium and the second dispersion medium are the acrylic pressure sensitive adhesive PSA188 of scomith conyssin electronic technology ltd, the test results are shown in fig. 2 and 3, fig. 2 is a temperature-time curve when the temperature indicating label of the first embodiment of the present invention starts fading, fig. 3 is a temperature-time curve when the temperature indicating label of the first embodiment of the present invention reaches the fading end point (when the color change stops), and as can be seen from fig. 2 and 3, the temperature indicating label of this embodiment can realize accurate timing under different temperature environments, along with time lapse and temperature rise, the color of temperature indication label can change colour gradually and constantly reduce, and the process of fading is irreversible, through the comparison with standard color, can indicate the time that the ambient temperature that is located is higher than the instruction temperature, and the temperature indication label of this embodiment can be applied to application fields that the requirement is strict to the ambient temperature that article are located such as bacterin, cold chain transportation.
The temperature indication label of this embodiment, the accessible is heated and is started, has small, simple structure, low cost, makes things convenient for volume production, the obvious advantage of colour change contrast.
Second embodiment:
the same parts of this embodiment as the first embodiment are not repeated, and the difference is that the temperature indication label of this embodiment further includes a shielding layer 60 located outside the first substrate layer 10, 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 colored 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 contrasting color region, so as to compare the colors of the temperature indicating label after fading.
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 color dye layer 20 and the fading material layer 40 are the same as those in the first embodiment, and are not repeated. The temperature indication label of this embodiment, the accessible is heated and is started, has small, simple structure, low cost, makes things convenient for volume production, the obvious advantage of colour change contrast.
Fig. 5 is a schematic view of several overall configurations 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 step, and these embodiments will fall within the scope of the present invention.
Claims (22)
1. The temperature indicating label is characterized by comprising a first substrate layer (10), a colored dye layer (20), a diffusion layer (30), a fading substance layer (40) and a second substrate layer (50) which are sequentially arranged, wherein the colored dye layer (20) comprises a first dispersion medium and a colored dye dispersed in the first dispersion medium, the colored dye is a product of mixed reaction of a recessive dye and a material for providing an oxidizing substance, the fading substance layer (40) comprises a second dispersion medium and a fading material dispersed in the second dispersion medium, the fading material is heated to generate a basic substance, and the diffusion layer (30) enables the basic substance to be in contact with the colored dye to fade when indicating an environment above temperature;
the fading material is selected from one or more of imidazoles and derivatives or mixtures thereof, aliphatic amines, alcamines, amides, alicyclic amines, aromatic amines, naphthalene amines and other amine materials.
2. The temperature indicating label of claim 1, wherein the indicated temperature ranges from-65 ℃ to 80 ℃.
3. The temperature indicating label according to claim 1 or 2, characterized in that the material providing an oxidizing substance comprises a material providing a Lewis acid or a material providing an oxidizing metal ion or a material providing a hydrogen ion.
4. The temperature indicating label according to claim 3, wherein the Lewis acid providing material is selected from one or more of diaryliodonium salts, triarylsulfonium salts, alkylsulfonium salts, iron arene salts, sulfonyloxy ketones, and triarylsiloxy ethers.
5. The temperature indicating label according to claim 3, wherein the material providing oxidizing metal ions is selected from one or more of the group of salts containing K, Ca, Na, Mg, Al, Zn, Fe, Sn, Pb, Cu, Hg, Ag, Pt, Au metal ions.
6. The temperature indicating label according to claim 3, wherein said hydrogen ion providing material is selected from one or more of bisphenol A, bisphenol F, bisphenol S, 4-hydroxy-4' -isopropoxydiphenyl sulfone, DBSP (2, 4-diphenyl sulfone phenol).
7. The temperature indicating label according to claim 1 or 2, characterized in that the material of the diffusion layer (30) is an acrylic polymer, a silicone based polymer or an olefin based polymer.
8. A temperature indicating label according to claim 1 or 2, wherein the thickness of the diffusion layer (30) is in the range of 1-500 microns.
9. The temperature indicating label of claim 1 or 2, 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.
10. The temperature indicating label according to claim 1 or 2, characterized in that the leuco dye is selected from fluoran-based dyes or triarylmethane-based dyes.
11. The temperature indicating label according to claim 10, wherein said fluoran-based dye or triarylmethane-based dye is selected from the group consisting of cyanine-8, cyanine-5, haematochrome-16, melanin-1, crystal violet lactone, thermal scarlet dye, 3-bis (N-octyl-2-methylindole) phthalide, 6' - (diethylamino) -1',3' -dimethylfluoran, 3-diethylamino-6-chlorofluoran, 6-dimethylamino-3, 3-bis (4-dimethylaminophenyl) phthalide, leuco crystal violet, 7- [4- (diethylamino) -2-ethoxyphenyl ] -7- (2-methyl-1-octyl-1H-indol-3-yl) 3,4-B ] pyridin-5 (7H) -one, 4'- [ (9-butyl-9H-carbazol-3-yl) methylene ] bis [ N-methyl-N-phenylaniline ], 2-phenylamino-3-methyl-6-dibutylamino-fluoran, 2-phenylamino-3-methyl-6-diethylaminofluoran, 3',6' -dimethoxyfluorane, 3-bis (4-diethylamino-2-ethoxyphenyl) -4-azaphthalide, thermo (thermo) labile green TF-G, and one or more of 3- (N-ethyl-4-toluidino) -6-methyl-7-anilinofluorane.
12. The temperature indicating label according to claim 1 or 2, characterized in that the first substrate layer (10) and the second substrate layer (50) are selected from one or more of PET, PEN, PC, PP, PMMA, PBT, PVC, PI, cellulose.
13. Temperature indicating label according to claim 1, wherein said imidazoles and derivatives or mixtures thereof are selected from the group consisting of 1-vinylimidazole, N-ethylimidazole, 2-bromo-4-nitroimidazole, 1, 2-dimethylimidazole, 4-nitroimidazole, benzimidazole, 1-N-butylimidazole, 4-iodo-1H-imidazole, 1- (4-nitrobenzyl) imidazole, 1- (4-aminobenzyl) imidazole, 2,5, 6-trimethylbenzimidazole, 2- (trifluoromethyl) benzimidazole, 2-hydroxybenzimidazole, 1-tritylimidazole, 2,4, 5-triiodoimidazole, 4, 5-diiodo-1H-imidazole, 1-ethyl-3-methylimidazole iodide, 1-octyl-3-methylimidazole chloride, 1-allyl-3-methylimidazole chloride, 1- (2,4, 6-triisopropylphenylsulfonyl) imidazole, 2-mercaptomethylbenzimidazole, 1- (4-formylphenyl) imidazole, 1- (4-nitrophenyl) -1H-imidazole, 1- (4-aminophenyl) imidazole, N-propylimidazole, N-acetylimidazole, 2-chloro-4-nitroimidazole, 2-mercapto-1-methylimidazole, 2-undecylimidazole, 2, 4-dimethylimidazole, 4, 5-diphenylimidazole, 4-azabenzimidazole, 2-methylimidazole, 4-methylimidazole, 4-iodoimidazole, 2-ethylimidazole, 2-phenylimidazole, 1-cyanoethyl-2-ethyl-4-methylimidazole, 1-cyanoethyl-2-phenylimidazole, an adduct of 2-methylimidazole and butyl glycidyl ether, and an adduct of 2-methylimidazole and 2-ethylhexyl glycidyl ether.
14. The temperature indicating label according to claim 1, wherein the aliphatic amine is selected from one or more of monomethylamine, monopropylamine, 2-propyleneamine, tert-butylamine, decylamine, dimethylamine, dipropylamine, cyclopropylamine, diisobutylamine, dodecylamine, trimethylamine, tripropylamine, n-butylamine, hexylamine, hexadecylamine, monoethylamine, isopropylamine, di-n-butylamine, 2-ethylhexylamine, octadecylamine, diethylamine, diisopropylamine, isobutylamine, hexamethylenediamine, distearylamine, triethylamine, 1, 2-dimethylpropylamine, sec-butylamine, trioctylamine, 1, 5-dimethylhexylamine, ethylenediamine, 1, 2-propylenediamine, 1, 4-butylenediamine, 1, 10-decyldiamine.
15. The temperature indicating label of claim 1, wherein the alkanolamines are selected from one or more of monoethanolamine, diethanolamine, triethanolamine, 3-propanolamine, monoisopropanolamine, diisopropanolamine, triisopropanolamine, N-dimethylethanolamine, N-diethylethanolamine.
16. The temperature indicating label according to claim 1, wherein the amide is selected from one or more of formamide, acetamide, propionamide, butyramide, isobutyramide, acrylamide, polyacrylamide, caprolactam, Dimethylformamide (DMF), Dimethylacetamide (DMAC).
17. The temperature indicating label according to claim 1, wherein the alicyclic amine is selected from one or more of triethylenediamine, diethylenetriamine, hexamethylenetetramine, hexamethyleneimine, triethylenediamine, cyclic ethyleneimine, morpholine, piperazine, cyclohexylamine.
18. The temperature indicating label according to claim 1, wherein the aromatic amine is selected from aniline, diphenylamine, benzidine, o-phenylenediamine, m-phenylenediamine, p-phenylenediamine, o-toluidine, m-methylaniline, p-methylaniline, 2, 3-dimethylaniline, 2, 4-dimethylaniline, 2, 5-dimethylaniline, 2, 6-dimethylaniline, 3, 4-dimethylaniline, 3, 5-dimethylaniline, 2,4, 6-trimethylaniline, o-ethylaniline, N-butylaniline, 2, 6-diethylaniline, N-formanilide, p-butylaniline, N-acetanilide, 3-methoxyaniline, o-chloroaniline, m-chloroaniline, p-chloroaniline, o-ethoxyaniline, m-ethoxyaniline, p-ethoxyaniline, N-methylaniline, 2, 3-dichloroaniline, 2, 4-dichloroaniline, 2, 6-dichloroaniline, 3, 4-dichloroaniline, 3, 5-dichloroaniline, 2, 5-dichloroaniline, N-ethylaniline, N-diethylaniline, N-dimethylaniline, o-bromoaniline, m-bromoaniline, p-bromoaniline, 2,4, 5-trichloroaniline, 2,4, 6-trichloroaniline, 2, 4-dibromoaniline, 2, 5-dibromoaniline, 2, 6-dibromoaniline, o-fluoroaniline, m-fluoroaniline, p-fluoroaniline, 2, 4-difluoroaniline, 3, 4-difluoroaniline, 2,3, 4-tribromoaniline, o-nitroaniline, m-nitroaniline, p-nitroaniline, 2, 4-dinitroaniline, p-fluoroaniline, 3, 4-difluoroaniline, p-fluoroaniline, 2,3, 4-difluoroaniline, 2, 4-trifluoroaniline, o-nitroaniline, m-nitroaniline, p-fluoroaniline, p-bromoaniline, p-fluoroaniline, and a, 3-chloro-4-fluoroaniline and/or o-nitro-p-toluidine.
19. The temperature indicating label according to claim 1, wherein said naphthalene based amines are selected from one or more of 1-naphthylamine, 2-naphthylamine, phthalimide, naphthalene diamine, Ethylene Bis Stearamide (EBS).
20. The temperature indicating label according to claim 1, wherein said other amines are selected from one or more of polyethyleneimine, hydroxylamine.
21. The temperature indicating label of claim 1, further comprising a barrier layer (60) located outside the first substrate layer (10), the barrier layer (60) having an observation window region (61) thereon.
22. The temperature indicating label of claim 21, wherein the shielding layer (60) has one or more of an electronic identification label, a two-dimensional code, a bar code, or other electronic identification pattern thereon.
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| CN202011594624.2A CN112581856B (en) | 2020-12-29 | 2020-12-29 | Temperature indicating label |
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| CN202011594624.2A CN112581856B (en) | 2020-12-29 | 2020-12-29 | Temperature indicating label |
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| CN113340455A (en) * | 2021-07-19 | 2021-09-03 | 江苏集萃智能液晶科技有限公司 | Food freshness indicating device |
| CN113789086A (en) * | 2021-10-25 | 2021-12-14 | 江苏集萃智能液晶科技有限公司 | High-temperature color-changing ink and label |
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| SE528869C2 (en) * | 2005-07-08 | 2007-03-06 | Tempix Ab | Label, method and apparatus for providing a temperature monitoring function in a product package |
| DE102008005371A1 (en) * | 2008-01-21 | 2009-07-23 | Bizerba Gmbh & Co. Kg | designation |
| CN102483886B (en) * | 2009-09-03 | 2015-10-07 | 日本制纸株式会社 | Thermosensitive recording label |
| CN102279056B (en) * | 2011-05-18 | 2013-07-17 | 王斌 | Time-temperature indicator and preparation method thereof |
| CN102504574A (en) * | 2011-10-20 | 2012-06-20 | 山西大学 | Degradable and decolorizable pigment and its preparation method |
| MY167562A (en) * | 2011-11-07 | 2018-09-14 | Ricoh Co Ltd | Thermosensitive Recording Label |
| CN108873538B (en) * | 2018-06-25 | 2021-06-04 | 常州铱视光电科技有限公司 | Alkali-responsive electrochromic film and preparation method and application thereof |
| CN111276035B (en) * | 2020-03-20 | 2022-04-12 | 苏州和萃新材料有限公司 | Temperature indicating label |
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