阅读说明：本技术 一种计时温度指示标签 (Timing temperature indicating label ) 是由 邱运昌 陆健健 程锋 谷小虎 于 2020-12-29 设计创作，主要内容包括：本发明公开了一种计时温度指示标签,包括显色层、扩散层和引发层,所述显色层与所述引发层设置在所述扩散层的两侧,所述显色层包括第一胶水和溶于第一胶水中的发色染料,所述引发层包括第二胶水和溶于第二胶水中的引发物质,所述引发物质和所述发色染料通过所述扩散层后相接触而反应显色。本发明的计时温度指示标签,结构简单、体积小、操作方便、材料选择广、易推广应用,并可实现计时功能。(The invention discloses a timing temperature indicating label, which comprises a color development layer, a diffusion layer and an initiation layer, wherein the color development layer and the initiation layer are arranged on two sides of the diffusion layer, the color development layer comprises first glue and a chromophoric dye dissolved in the first glue, the initiation layer comprises second glue and an initiation substance dissolved in the second glue, and the initiation substance and the chromophoric dye are contacted after passing through the diffusion layer to react and develop color. The timing temperature indicating label has the advantages of simple structure, small volume, convenient operation, wide material selection, easy popularization and application and capability of realizing the timing function.)

1. A timing temperature indicating label, characterized by comprising a color development layer (10), a diffusion layer (20) and an initiation layer (30), wherein the color development layer (10) and the initiation layer (30) are arranged at two sides of the diffusion layer (20), the color development layer (10) comprises a first glue and a chromophoric dye dissolved in the first glue, the initiation layer (30) comprises a second glue and an initiation substance dissolved in the second glue, and the initiation substance and the chromophoric dye are contacted after passing through the diffusion layer to react and develop color.

2. A time keeping temperature indicating label according to claim 1, wherein said first glue and said second glue are selected from one or more of acrylic, polyurethane, silicone glue, epoxy glue.

3. A time indicating temperature label according to claim 1, wherein said chromophoric dye is a leuco dye selected from bromothymol blue, bromocresol green, methyl yellow, methyl orange, bromocresol green, Red 500, 7- [4- (diethylamino) -2-ethoxyphenyl ] -7- (2-methyl-1-octyl-1H-indol-3-yl) furo [3,4-B ] pyridin-5 (7H) -one, 4' - [ (9-butyl-9H-carbazol-3-yl) methylene ] bis [ N-methyl-N-phenylaniline ], 2' - (dibenzylamino) -6' - (diethylamino) fluoran, a, 3, 3-bis (N-octyl-2-methylindole) phthalide, 2-phenylamino-3-methyl-6-diethylfluoran, 2-phenylamino-3-methyl-6-dibutylfluoran, 6-dimethylamino-3, 3-bis (4-dimethylaminophenyl) phthalide, 10-benzoyl-3, 7-bis (dimethylamino) phenothiazine, 3-bis (4-diethylamino-2-ethoxyphenyl) -4-azaphthalide, 1, 3-dimethyl-6-diethylaminofluoran, 2 '-chloro-6' - (diethylamino) fluoran, 6- (N-ethyl-4-toluidino) -2-methylfluoran, 2-methyl-2-aminofluoran, and a salt thereof, 3- (N-ethyl-4-toluidino) -6-methyl-7-anilinofluoran, 3',6' -dimethoxyfluoran, 1, 2-benzo-6-diethylaminofluoran, 3- (1, 2-dimethyl-3-indolyl) -3- [ 4-diethylamino-2-methylphenyl ] phthalide, 3- (4-diethylamino-2-ethoxyphenyl) -3- (1-ethyl-2-methylindol-3-yl) -4-aza-2-benzo [ C ] furanone, 6'- (diethylamino) -1',2 '-benzofluoran, 2- (2',4' -dimethylamino-3-methyl-6-diethylaminofluoran), N-dimethyl-4- (2- (2- (octyloxy) phenyl) -6-phenylpyridin-4-yl) aniline, 3- (4-dimethylaminophenyl) -3- (1-butyl-2-methyl-indol-3-yl) -6-dimethylaminophthalide, 3-N-isopentyl-N-ethylamino-6-methyl-7-phenylaminofluoran.

4. A time indicating label according to claim 1, wherein said initiating substance is selected from acidic phosphate esters and/or phosphate ester modified resins.

5. A time indicating label according to claim 4, wherein said acidic phosphate ester comprises one or more of ethyl phosphate, n-butyl phosphate, butoxyethyl phosphate, 2-ethylhexyl phosphate, dodecyl phosphate, tetradecyl phosphate, hexadecyl phosphate, octadecyl phosphate, oleyl phosphate, isotridecyl phosphate, dimyristyl phosphate, ethylene glycol phosphate, 2-hydroxyethyl methacrylate phosphate, dibutyl phosphate, di (2-ethylhexyl) phosphate.

6. The timing temperature indicating label of claim 4, wherein the phosphate modified resin comprises one or more of a phosphate modified acrylic resin, a polyether phosphate copolymer, and a polyester phosphate copolymer.

7. A chronograph temperature indicating label according to claim 1, c h a r a c t e r i z e d in that the material of the diffusion layer (20) is a thermoplastic resin polymer gum.

8. A time-counting temperature indicating label according to any one of claims 1 to 7, characterized in that the color-developing layer (10) comprises a first substrate layer (11) and a color-developing glue layer (12), the initiation layer (30) comprises a second substrate layer (31) and an initiation glue layer (32), and the color-developing glue layer (12) and the initiation glue layer (32) are respectively arranged in contact with both sides of the diffusion layer (20).

9. The timing temperature indication label according to claim 8, characterized in that the first substrate layer (11) and the second substrate layer (31) are selected from one or more of PE film, PC film, PET film, PP film, PVC film and PS film, preferably, the thickness of the first substrate layer (11) and the second substrate layer (31) is 5-200 μm.

10. A chronograph temperature indicating label according to claim 1, characterized in that the side of the color-developing layer (10) remote from the diffusing layer (20) is further provided with a printed contrast reference layer (50), the printed contrast reference layer (50) having a transparent window (51) thereon.

11. A chronograph temperature indicating label according to claim 1, in which the initiating layer (30) is further provided with a backing layer (40) on the side remote from the diffusing layer (20).

Technical Field

The invention relates to the technical field of temperature monitoring and application, in particular to a timing temperature indicating label.

Background

The temperature requirement for storing and transporting the vaccine in medicine is severe, the vaccine is required to be stored at 2-8 ℃, and the vaccine is extremely easy to inactivate at a slightly high temperature, so that the vaccine cannot be immunized and even has more serious consequences. In order to ensure the activity of the vaccine, accurate temperature monitoring is also necessary while a complete temperature control facility is established.

The current market approaches to temperature monitoring can be divided into electronic and non-electronic technologies. Electronic technical instruments are generally large in size, suitable for large products or whole boxes of products and high in cost; the non-electronic temperature monitor is generally based on gas or liquid diffusion, and after a substance to be monitored is heated and melted, a reaction occurs in a specific substance in the substance to be monitored to generate a color for indication, so that the non-electronic temperature monitor is relatively expensive in manufacturing cost, easy to damage and limited in use range. Chinese patent application No. CN200420078916.0 mentions the capillary action principle of a simple thermometer 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 not easy to use. 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 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.

Therefore, the invention of the accurate, cheap and convenient timing temperature indication label has important significance for the safety of vaccines or fresh products and the like.

Disclosure of Invention

The invention aims to provide a timing temperature indicating label which is simple in structure, small in size, convenient to produce in mass and capable of achieving a timing function, aiming at the technical problems in the prior art.

The invention adopts the following technical scheme:

a timing temperature indicating label comprises a color development layer 10, a diffusion layer 20 and an initiation layer 30, wherein the color development layer 10 and the initiation layer 30 are arranged on two sides of the diffusion layer 20, the color development layer 10 comprises first glue and a chromophoric dye dissolved in the first glue, the initiation layer 30 comprises second glue and an initiation substance dissolved in the second glue, and the initiation substance and the chromophoric dye are contacted after passing through the diffusion layer to react and develop color.

Preferably, the first glue and the second glue are selected from one or more of acrylic acid, polyurethane, organic silicon glue and epoxy glue.

Preferably, the chromophoric dye is a leuco dye selected from bromothymol blue, bromocresol green, methyl yellow, methyl orange, bromocresol green, Red 500, 7- [4- (diethylamino) -2-ethoxyphenyl ] -7- (2-methyl-1-octyl-1H-indol-3-yl) furo [3,4-B ] pyridin-5 (7H) -one, 4' - [ (9-butyl-9H-carbazol-3-yl) methylene ] bis [ N-methyl-N-phenylaniline ], 2' - (dibenzylamino) -6' - (diethylamino) fluoran, 3-bis (N-octyl-2-methylindole) phthalide, methyl orange, bromocresol green, Red 500, 2' - (methyl-1H-indol-3-yl) furo [3,4-B ] pyridin-5 (7H) -one, 4' - [ (9-butyl-9H-carbazol-, 2-phenylamino-3-methyl-6-diethylfluoran, 2-phenylamino-3-methyl-6-dibutylfluoran, 6-dimethylamino-3, 3-bis (4-dimethylaminophenyl) phthalide, 10-benzoyl-3, 7-bis (dimethylamino) phenothiazine, 3-bis (4-diethylamino-2-ethoxyphenyl) -4-azaphthalide, 1, 3-dimethyl-6-diethylaminofluoran, 2 '-chloro-6' - (diethylamino) fluoran, 6- (N-ethyl-4-methylanilino) -2-methylfluoran, 3- (N-ethyl-4-methylanilino) -6-methyl-7-anilinofluoran, 3',6' -dimethoxyfluorane, 1, 2-benzo-6-diethylaminofluorane, 3- (1, 2-dimethyl-3-indolyl) -3- [ 4-diethylamino-2-methylphenyl ] phthalide, 3- (4-diethylamino-2-ethoxyphenyl) -3- (1-ethyl-2-methylindol-3-yl) -4-aza-2-benzo [ C ] furanone, 6' - (diethylamino) -1',2' -benzofluorane, 2- (2',4' -dimethylphenylamino-3-methyl-6-diethylaminofluorane), N-dimethyl-4- (2- (2- (octyloxy) phenyl) -6 -phenylpyridin-4-yl) aniline, 3- (4-dimethylaminophenyl) -3- (1-butyl-2-methyl-indol-3-yl) -6-dimethylaminophthalide, 3-N-isopentyl-N-ethylamino-6-methyl-7-phenylaminofluoran.

Preferably, the initiating species is selected from acidic phosphate esters and/or phosphate ester modified resins.

Preferably, the acidic phosphate ester comprises one or more of ethyl phosphate, n-butyl phosphate, butoxyethyl phosphate, 2-ethylhexyl phosphate, dodecyl phosphate, tetradecyl phosphate, hexadecyl phosphate, octadecyl phosphate, oleyl phosphate, isotridecyl phosphate, ditetradecyl phosphate, ethylene glycol phosphate, 2-hydroxyethyl methacrylate phosphate, dibutyl phosphate, di (2-ethylhexyl) phosphate.

Preferably, the phosphate modified resin comprises one or more of phosphate modified acrylic resin, polyether phosphate copolymer and polyester phosphate copolymer.

Preferably, the material of the diffusion layer 20 is a thermoplastic resin polymer gel.

Preferably, the color development layer 10 includes a first substrate layer 11 and a color development adhesive layer 12, the initiation layer 30 includes a second substrate layer 31 and an initiation adhesive layer 32, and the color development adhesive layer 12 and the initiation adhesive layer 32 are respectively disposed on two sides of the diffusion layer 20 in contact.

Preferably, the first substrate layer 11 and the second substrate layer 31 are selected from one or more of a PE film, a PC film, a PET film, a PP film, a PVC film, and a PS film, and preferably, the thickness of the first substrate layer 11 and the second substrate layer 31 is 5 to 200 μm.

Preferably, the side of the color development layer 10 away from the diffusion layer 20 is further provided with a printing contrast reference layer 50, and the printing contrast reference layer 50 is provided with a transparent window 51.

Preferably, a backing layer 40 is further disposed on a side of the initiation layer 30 remote from the diffusion layer 20.

The timing temperature indicating label has the advantages of simple structure, small volume, convenient operation, wide material selection, easy popularization and application and capability of realizing the timing function.

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 view of a timing temperature indicating label according to an embodiment of the present invention;

FIG. 2 is a schematic view of a timing temperature indicating label according to yet another embodiment of the present invention;

FIG. 3 is a schematic view of a timing temperature indicating label according to yet another embodiment of the present invention;

FIG. 4 is a schematic view of a timing temperature indicating label according to yet another embodiment of the present invention;

FIG. 5 is a top view of the time indicating temperature label of the present invention;

FIG. 6 is a color development curve of the time indicating temperature label at different temperatures in the first embodiment of the present invention;

fig. 7 is a color development curve of the time-measuring temperature indicating label at different temperatures in the second embodiment 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.

A chronograph temperature indicating label of the present invention will be described in detail with reference to the accompanying drawings.

Just as in the prior art, the conventional temperature sensing tag has a complex structure, high cost and large volume, and the popularization and application of the conventional temperature sensing tag are limited.

In order to solve the above problems, the present invention provides a time-measuring temperature indicating label, as shown in fig. 1, comprising a developing layer 10, a diffusion layer 20 and an initiation layer 30, wherein the developing layer 10 and the initiation layer 30 are disposed on both sides of the diffusion layer 20, the developing layer 10 comprises a first glue and a chromophoric dye dissolved in the first glue, the initiation layer 30 comprises a second glue and an initiation substance dissolved in the second glue, and the initiation substance and the chromophoric dye react and develop color by contacting after passing through the diffusion layer.

As shown in fig. 2, the color developing layer 10 of the present invention includes a first substrate layer 11 and a color developing adhesive layer 12, and the color developing adhesive layer 12 is disposed in contact with one side of the diffusion layer 20. The color development glue layer 12 is composed of first glue and color development dye. The thickness of the color developing adhesive layer 12 is preferably 1 to 50 μm.

The first glue is selected from one or more of acrylic acid glue, polyurethane glue, organic silicon glue and epoxy glue. The chromophoric dye is a recessive dye selected from bromothymol blue, bromocresol green, methyl yellow, methyl orange, bromocresol green, Red 500, 7- [4- (diethylamino) -2-ethoxyphenyl ] -7- (2-methyl-1-octyl-1H-indol-3-yl) furo [3,4-B ] pyridin-5 (7H) -one, 4' - [ (9-butyl-9H-carbazol-3-yl) methylene ] bis [ N-methyl-N-phenylaniline ], 2' - (dibenzylamino) -6' - (diethylamino) fluorane, 3-bis (N-octyl-2-methylindole) phthalide, methyl-p-xylene, ethyl-N-butyl-ethyl-o-xylene, ethyl-N-butyl-ethyl-o-xylene, ethyl-N-butyl-9H-carbazol-3-methyl, 2-phenylamino-3-methyl-6-diethylfluoran, 2-phenylamino-3-methyl-6-dibutylfluoran, 6-dimethylamino-3, 3-bis (4-dimethylaminophenyl) phthalide, 10-benzoyl-3, 7-bis (dimethylamino) phenothiazine, 3-bis (4-diethylamino-2-ethoxyphenyl) -4-azaphthalide, 1, 3-dimethyl-6-diethylaminofluoran, 2 '-chloro-6' - (diethylamino) fluoran, 6- (N-ethyl-4-methylanilino) -2-methylfluoran, 3- (N-ethyl-4-methylanilino) -6-methyl-7-anilinofluoran, 3',6' -dimethoxyfluorane, 1, 2-benzo-6-diethylaminofluorane, 3- (1, 2-dimethyl-3-indolyl) -3- [ 4-diethylamino-2-methylphenyl ] phthalide, 3- (4-diethylamino-2-ethoxyphenyl) -3- (1-ethyl-2-methylindol-3-yl) -4-aza-2-benzo [ C ] furanone, 6' - (diethylamino) -1',2' -benzofluorane, 2- (2',4' -dimethylphenylamino-3-methyl-6-diethylaminofluorane), N-dimethyl-4- (2- (2- (octyloxy) phenyl) -6 -phenylpyridin-4-yl) aniline, 3- (4-dimethylaminophenyl) -3- (1-butyl-2-methyl-indol-3-yl) -6-dimethylaminophthalide, 3-N-isopentyl-N-ethylamino-6-methyl-7-phenylaminofluoran.

The diffusion layer 20 of the present invention is a thermoplastic resin mixture such as one or more of polyester resin, acrylic resin, silicone resin, or epoxy resin. Preferably, the diffusion layer 20 of the present invention has a thickness of 10 to 200 μm.

The initiation layer 30 of the present invention includes a second substrate layer 31 and an initiation glue layer 32, the initiation glue layer 32 being disposed in contact with one side of the diffusion layer 20. The initiation glue layer 32 is composed of a second glue and an initiating substance. The thickness of the initiation adhesive layer 32 is preferably 1 to 50 μm.

The second glue is the same as or different from the first glue. The second glue is selected from one or more of acrylic acid glue, polyurethane glue, epoxy glue and organic silica gel water. The initiating species may be selected from acidic phosphate esters and/or phosphate ester modified resins. The acidic phosphate ester comprises one or more of ethyl phosphate, n-butyl phosphate, butoxyethyl phosphate, 2-ethylhexyl phosphate, dodecyl, tetradecyl, hexadecyl, octadecyl alcohol phosphate, oleyl phosphate, isotridecyl phosphate, ditetradecyl phosphate, ethylene glycol phosphate, 2-hydroxyethyl methacrylate phosphate, dibutyl phosphate, and di (2-ethylhexyl) phosphate. The phosphate modified resin comprises one or more of phosphate modified acrylic resin, polyether phosphate copolymer and polyester phosphate copolymer.

The first substrate layer 11 and the second substrate layer 31 are selected from one or more of a PE film, a PC film, a PET film, a PP film, a PVC film, and a PS film, and preferably, at least one of the first substrate layer 11 and the second substrate layer 31 is a transparent substrate, or both of them are transparent substrates, so that a color change can be observed through the transparent substrate after the color change of the timing temperature indicator label. Preferably, the thickness of the first substrate layer 11 and the second substrate layer 31 is 5 to 200 μm.

As shown in fig. 3, in a preferred embodiment of the present invention, the side of the color-developing layer 10 away from the diffusion layer 20 is further provided with a printing contrast reference layer 50, and the printing contrast reference layer 50 is provided with a transparent window 51. The overall appearance of the timing temperature indicating label can be optimized by arranging the printing contrast reference layer 50, so that the timing temperature indicating label can be developed in different shapes or patterns according to needs, and preferably, the printing contrast reference layer 50 except for the transparent window 51 is arranged to be an opaque area or other color area, for example, at least part of the printing contrast reference layer is arranged to be a contrast color area, so that the timing temperature indicating label can be compared in color after being developed.

In the embodiment of the invention, the printing contrast reference layer 50 adopts a specified spot color, the base material of the printing contrast reference layer is one selected from PE films, PC films, PET films, PP films, PVC films and PS films, and the thickness is 25-50 μm.

In the present invention, preferably, the printing contrast reference layer 50 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 sensing timing tag. The electronic identification label, the two-dimensional code, the barcode or other electronic identification patterns may be applied to one side of the printing contrast reference layer 50, or may be a two-dimensional code, a barcode or other electronic identification patterns printed by the printing contrast reference layer 50 itself, which is not particularly limited.

As shown in FIG. 4, in a preferred embodiment of the present invention, a back adhesive layer 40 is further disposed on a side of the initiation layer 30 away from the diffusion layer 20, and the back adhesive is selected from a 10-50 μm double-sided adhesive without a substrate. The back glue layer 40 is arranged, so that the timing temperature indicating label can be pasted on an article needing temperature sensing.

Fig. 5 is a top view of the time indicating label of the present invention. The shape of the timing temperature indication label of the present invention can be set to various structural shapes according to actual needs, for example, the shape 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 transparent window 51 can also be set to a figure structure of a strip, a circle, an ellipse, a triangle, a square, a pentagon, a hexagon, a rectangle, other polygons or other arbitrary shapes, which is not described in detail.

Example 1:

in this embodiment, the initiation layer 30 includes a second substrate 31 and an initiation glue layer 32, the second substrate 31 is selected from white PET, the initiation glue layer includes an initiation substance and a second glue, the initiation substance is selected from phosphate grease, the second glue is selected from acrylic glue, and a mass ratio of the two is 0.6: 10; the color development layer 10 comprises a first substrate 11 and a color development glue layer 12, wherein the first substrate 11 is selected from transparent PET, the color development glue layer 12 comprises a first glue and a color development dye, the color development dye is selected from haematochrome-16, the first glue is selected from acrylic acid glue, and the mass ratio of the two is 0.125: 10. the diffusion layer is selected from acrylic materials with a thickness of 15 μm.

The above materials were combined in the order shown in fig. 2 to produce a time temperature indicating label. The color development curves of the label of this example at different temperatures (37 ℃ C., 25 ℃ C.) are shown in FIG. 6.

When Δ E ═ 56 was selected as the end point of color development, the label was timed at 37 ℃ for 35min and at 25 ℃ for 120 min.

Example 2:

the same portions as in example 1 in this example are not described again, and the initiator is a phosphate-modified acrylic resin MIRAMER SC1400 unlike example 1.

The color development curves of the label of this example at different temperatures (37 ℃ C., 25 ℃ C.) are shown in FIG. 7.

When 60 ═ E was selected as the end point of color development, the label was timed to 65min at 37 ℃ and 200min at 25 ℃.

Example 3

The same portions as in example 1 are not described again in this example, and the initiator substance is a mixture of SZ9166 phosphate ester-modified acrylic resin and oil phosphate ester at a mass ratio of 1:1, unlike example 1.

When 60 ═ E was chosen as the end point of color development, the label was timed to 1 hour at 37 ℃ and 3.5 hours at 25 ℃.

Example 4

The same portions as in example 1 are not described again in this example, and the initiator was a mixture of SZ9166 phosphate-modified acrylic resin and ditetradecyl phosphate in a mass ratio of 1:1, unlike example 1.

When Δ E ═ 50 was chosen as the end point of color development, the label had a timekeeping time of 1.3h at 37 ℃ and 4h at 25 ℃.

Example 5

The same portions as those in example 1 are not described again in this example, and the difference from example 1 is that the initiating substance is Allnex168 phosphate ester modified acrylic resin and oil phosphate ester mixture, the mass ratio of which is 1: 2.

When Δ E ═ 50 was selected as the end point of color development, the label timed at 37 ℃ for 0.5h and at 25 ℃ for 1.7 h.

Example 6

The same portions as those in example 3 are not described again in this example, and the diffusion layer is selected from acrylic materials having a thickness of 125 μm, unlike example 3.

When Δ E ═ 40 was chosen as the end point of color development, the label was timed to 40h at 37 ℃ and 168h (7 days) at 25 ℃.

Example 7

The same portions as those in example 3 are not described again in this example, and the diffusion layer is selected from acrylic materials having a thickness of 175 μm, unlike example 3.

When the end point of the coloration was chosen to be 66 Δ E, the label was timed to 14 days at 37 ℃ and 51 days at 25 ℃.

The temperature indicating label has the advantages of simple structure, convenient operation, wide material selection and easy popularization and application, and can be widely applied to labor insurance products for time warning and indication of fresh food, plasma products, vaccines, cold chain transportation and high and low temperature working environments, special place time limit visiting certificates, temperature and running time warning and indication of precision instruments and equipment and other technical fields needing to monitor storage temperature and time variation and other temperature monitoring.

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.