CN213812645U

CN213812645U - Upper critical temperature indicator

Info

Publication number: CN213812645U
Application number: CN202023249813.4U
Authority: CN
Inventors: 霍俊伦; 邱运昌; 陆健健; 谷小虎
Original assignee: Suzhou Hezui New Material Co ltd
Current assignee: Suzhou Hezui New Material Co ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-07-27
Anticipated expiration: 2030-12-29

Abstract

The utility model discloses an go up critical temperature indicator includes sealing layer, stock solution layer, isolation layer, dyestuff layer and substrate in proper order, the sealing layer with the common centre gripping of substrate stock solution layer, isolation layer and dyestuff layer, contain phase change material in the stock solution layer, when the indicator is in the temperature more than the critical temperature, phase change material passes through the isolation layer with adsorb extremely after the dyestuff layer contacts the colour development in the isolation layer. The upper critical temperature indicator has the advantages of simple structure, small size, convenience in operation, instant color change and convenience in use.

Description

Upper critical temperature indicator

Technical Field

The utility model relates to a temperature monitoring and application technical field, in particular to go up critical temperature indicator.

Background

The temperature requirement for storing and transporting the vaccine in medicine is severe, and the specified vaccine needs to be at 2 ℃ to up to

The product is stored at 8 ℃, and is easy to inactivate at a slightly high temperature, so that the consequence of immunity incapability and even more serious consequence is caused. 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.

Compared with the method that instruments are used for measurement or other indexes are used, the storage quality of the refrigerated product can be rapidly and visually distinguished by naked eyes, and the confidence of the product and the working efficiency of the product can be greatly enhanced no matter for merchants or consumers. Therefore, the invention of the accurate, cheap and convenient temperature indicator has important significance for the safety of vaccines or fresh products and the like.

Disclosure of Invention

An object of the utility model is to provide an go up critical temperature indicator to the above technical problem that exists among the prior art, simple structure, small, convenient operation, instantaneous discolour, it is convenient to use.

The following technical scheme is adopted in the application:

the utility model provides an go up critical temperature indicator includes sealing layer 10, stock solution layer 20, isolation layer 30, dyestuff layer 40 and substrate 50 in proper order, sealing layer 10 with the common centre gripping of substrate 50 stock solution layer 20, isolation layer 30 and dyestuff layer 40, include phase change material in the stock solution layer 20, when the indicator is the temperature more than the critical temperature, phase change material passes through isolation layer 30 with adsorb extremely after the contact of dyestuff layer 40 the colour development in the isolation layer 30.

Preferably, the liquid storage layer 20 is composed of a phase change material and a double-sided tape having a hole 21, and the phase change material is filled in the hole 21.

Preferably, the number of the holes 21 is one or more.

Preferably, the phase change material is selected from organic phase change materials having a melting point of not more than 250 ℃.

Preferably, the isolation layer 30 is made of a porous material for blocking or communicating the liquid storage layer 20 and the dye layer 40.

Preferably, the isolation layer 30 is selected from one or more of synthetic paper, wood pulp paper, cotton pulp paper, filter paper, microporous polymer, cellulose-alkali material, sponge.

Preferably, the dye layer 40 includes a dye that is soluble in the phase change material.

Preferably, the dye is selected from a solvent dye or a leuco dye.

Preferably, the substrate 50 is a release film or a film containing a back adhesive.

Preferably, the sealing layer (10) has thereon one or more of an electronic identification label, a two-dimensional code, a bar code or other electronic identification pattern.

The upper critical temperature indicator has the advantages of simple structure, small size, convenience in operation, instant color change and convenience in use.

Drawings

The present application may be better understood by reference to the following description of embodiments thereof taken in conjunction with the accompanying drawings, in which:

fig. 1 is a schematic structural view of an upper critical temperature indicator in embodiment 1 of the present application;

FIG. 2 is a schematic structural view of a liquid storage layer in example 2 of the present application;

FIG. 3 is a schematic diagram of the upper critical temperature indicator with the back adhesive according to the present application.

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 application, however, it will be apparent to those skilled in the art that the present application may be practiced without these specific details. The illustrative example embodiments set forth herein are presented for purposes of illustration only and are not intended to be limiting of the present application. Therefore, the scope of the present application is not to be limited by the particular embodiments, but only by the scope of the appended claims.

An upper critical temperature indicator according to the present application will be described in detail with reference to the accompanying drawings.

Just as in the prior art, the existing temperature monitoring devices are complex in structure, high in cost, large in size, and difficult to visually distinguish temperature changes by naked eyes.

In order to solve the above problems, the present application provides an upper critical temperature indicator, as shown in fig. 1, which sequentially includes a sealing layer 10, a liquid storage layer 20, an isolation layer 30, a dye layer 40 and a substrate 50, wherein the liquid storage layer 20, the isolation layer 30 and the dye layer 40 are clamped by the sealing layer 10 and the substrate 50 together. The liquid storage layer 20 contains a phase-change material, and when the indicator is at a temperature above the critical temperature, the phase-change material is contacted and dissolved with the dye layer 40 through the isolation layer 30, and then is adsorbed into the isolation layer 30 for color development.

The upper critical temperature indicator is sensitive to temperature change and has the effects of being instantaneous and convenient. When the indicator is at a temperature above the critical temperature, the phase-change material in the liquid storage layer 20 changes its form from solid to liquid, permeates into the isolation layer 30 and the dye layer 40, is contacted with the dye in the dye layer 40, is dissolved, and then is adsorbed to the isolation layer 30, changes from colorless to colored, and thus develops color in the isolation layer 30.

The liquid storage layer 20 of the application is positioned below the sealing layer 10, and the liquid storage layer 20 is composed of double-faced adhesive with holes 21 and phase-change materials filled in the holes 21. In one embodiment, as shown in fig. 1, the liquid storage layer 20 includes a double-sided adhesive tape with a hole, the hole 21 is located in the middle of the double-sided adhesive tape, and the phase-change material is filled in the hole 21. In another embodiment, as shown in fig. 2, the liquid storage layer 20 is a double-sided adhesive tape with multiple holes 21, the holes 21 are uniformly distributed in the liquid storage layer 20, and the phase-change material is filled in the holes 21.

The double-sided adhesive tape with the holes can be an acrylic adhesive film, an epoxy adhesive film, a polyurethane adhesive film, a polyester adhesive film and the like with the holes. The phase change material is selected from organic phase change materials having a melting point of not more than 250 ℃, preferably, the phase change material may be selected from one or more of dodecanol, tetradecanol, hexadecanol, octadecanol, behenyl alcohol, benzophenone, 4-benzyloxyphenylethyl decanoate, bisphenol A, bisphenol C, bisphenol S, bisphenol F, bisphenol AF, methyl cinnamate, 2, 4-diphenylsulfone phenol, 4-hydroxy-4' -isopropoxy diphenylsulfone, tetradecane, pentadecane, hexadecane, heptadecane, octadecane, eicosane, docosane, tetracosane, triacontane, dodecanoic acid, tetradecanoic acid, hexadecanoic acid, octadecanoic acid, pentaerythritol, neopentyl glycol, erythritol, mannitol, paraffin wax, erythritol, hydroquinone, methyl stearate, methyl palmitate, etc., the melting point of the phase change material is adjusted by changing the ratio of the components, therefore, the critical temperature of the indicator can be further adjusted, and the indicator can be reasonably adjusted according to different requirements.

In the present application, the phase change material is a colorless or light-colored solid when in the normal storage temperature range or below, and is filled in the hole 21 of the double-sided adhesive tape; when the temperature range is higher than the storage requirement temperature range of the monitored object, the phase-change material is melted into liquid, at the moment, the phase-change material flows into the isolation layer 30 and the dye layer 40 from the liquid storage layer 20, fully contacts with and dissolves the dye in the dye layer 40, the phase-change material carrying the dye is adsorbed to the isolation layer 30, and the change from colorless to colored occurs, so that the color is displayed in the isolation layer 30.

The isolation layer 30 is disposed under the liquid storage layer 20, and the isolation layer 30 is made of a porous material, such as one or more of synthetic paper, wood pulp paper, cotton pulp paper, filter paper, microporous polymer, cellulose-alkali material, and sponge. The isolation layer 30 is used for isolating or communicating the liquid storage layer 20 and the dye layer 40 and developing color. Specifically, when the phase change material in the liquid storage layer 20 is a solid, the isolation layer functions to isolate the liquid storage layer 20 from the dye layer 40; when the phase change material in the stock solution layer 20 was liquid, the porous material of isolation layer had the intercommunication effect this moment, and phase change material dissolves the dyestuff in the porous entering dyestuff layer 40 that passes through the isolation layer to carry the dyestuff absorption to take place to change colour and instruct in isolation layer 30.

The dye layer 40 of the present application is composed of a dye and a non-setting adhesive, and the dye is soluble in the phase change material. The dye is selected from a solvent dye or a leuco dye. The solvent dye comprises one or more of solvent yellow, solvent blue, solvent violet, solvent Red, solvent green and the like, and the recessive dye comprises 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 ] pyridine-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, 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 non-setting adhesive is selected from one or more of acrylic acid glue, polyurethane glue, organic silicon glue and epoxy glue.

The sealing layer 10 of this application is located the outside of indicator, and the sealing layer 10 presss from both sides stock solution layer 20, isolation layer 30 and dyestuff layer 40 with substrate 50 jointly. The sealing layer 10 is selected from a transparent PET film, a PP film, a PVC film, a PI film, etc., and simultaneously performs an outer layer protection function and an observation area function. When the item being monitored by the indicator is placed above its desired storage temperature, the indicator label changes color and can be seen by an observer in time through the transparent sealing layer 10.

In this application, it is preferable that the sealing layer 10 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 upper critical temperature indicator. The electronic identification label, two-dimensional code, barcode or other electronic identification pattern may be applied to one side of the sealing layer 10, or may be a two-dimensional code, barcode or other electronic identification pattern printed by the sealing layer 10 itself, and is not particularly limited.

The appearance of last critical temperature indicator of this application can be set for multiple structural shape according to actual need, for example it can set up to the label structure of the figure of circle, ellipse, triangle-shaped, square, pentagon, hexagon, rectangle, other polygons or other arbitrary shapes, goes up critical temperature indicator and also can set up to the figure structure of bar, circle, ellipse, triangle-shaped, square, pentagon, hexagon, rectangle, other polygons or other arbitrary shapes, no longer gives unnecessary details.

The substrate 50 of the present application is located below the dye layer 40 to provide support for the entire upper threshold temperature indicator. The substrate 50 may be a release film, which is removed during use, and the upper critical temperature indicator may be adhered to the surface of the object to be measured. Alternatively, as shown in fig. 3, the substrate 50 may be a film assembly including a back adhesive 51, and the film assembly may be directly adhered to the surface of the object to be measured, wherein the film is one selected from a PE film, a PC film, a PET film, a PP film, a PVC film, and a PS film, and has a thickness of 25 to 50 μm.

Example 1:

as shown in fig. 1, the upper critical temperature indicator of the present application sequentially includes a sealing layer 10, a liquid storage layer 20, an isolation layer 30, a dye layer 40 and a substrate 50, wherein the liquid storage layer 20, the isolation layer 30 and the dye layer 40 are commonly sandwiched by the sealing layer 10 and the substrate 50. The sealing layer 10 is selected from one of a transparent PET film, a PP film, a PVC film and a PI film; the liquid storage layer 20 is a double-sided adhesive tape with a hole in the middle, the phase change material is filled in the hole 21, the phase change material is selected from organic phase change materials with the melting point not higher than 250 ℃, and can be one or more of dodecanol, tetradecanol, hexadecanol, octadecanol, docosanol, 4-benzyloxy phenyl ethyl decanoate, bisphenol A, bisphenol C, bisphenol S, bisphenol F, bisphenol AF, methyl cinnamate, 2, 4-diphenyl sulfone phenol, 4-hydroxy-4' -isopropoxy diphenyl sulfone, tetradecane, pentadecane, hexadecane, heptadecane, octadecane, eicosane, docosane, tetracosane, triacontane, dodecanoic acid, tetradecanoic acid, hexadecanoic acid, octadecanoic acid, pentaerythritol, neopentyl glycol, butanetetraol, mannitol, solid paraffin, erythritol, hydroquinone, methyl stearate, methyl palmitate and the like, the critical temperature is adjusted by changing the proportion of each component, and the components can be reasonably blended according to different requirements; the isolation layer 30 is selected from one or more of synthetic paper, wood pulp paper, cotton pulp paper, filter paper, microporous polymer, cellulose-alkali material and sponge, and has the functions of isolating the liquid storage layer 20 from the dye layer 40 or communicating the liquid storage layer 20 with the dye layer 40, adsorbing the phase change material and developing color; the dye layer 40 comprises non-setting adhesive and dye, the non-setting adhesive is selected from one or more of acrylic acid glue, polyurethane glue, organic silicon glue and epoxy glue, the dye is selected from solvent dye, and the dye comprises one or more of solvent yellow, solvent blue, solvent purple, solvent red, solvent green and the like; the substrate 50 is selected from release films, and the release films are directly torn off and then adhered to the surface of a measured object in use.

The upper critical temperature indicator is sensitive to temperature change and has the effects of being instantaneous and convenient. When the indicator is below the critical temperature, the phase-change material is solid and does not develop color; when the temperature is above the critical temperature, the phase change material in the liquid storage layer 20 changes its form from solid to liquid, permeates into the isolation layer 30 and the dye layer 40, contacts with the dye in the dye layer 40, dissolves, adsorbs to the isolation layer 30, and changes from colorless to colored, thereby displaying color in the isolation layer 30.

Example 2:

the upper critical temperature indicator of this embodiment is the double-sided adhesive tape with multiple holes 21, as shown in fig. 2, the holes 21 are uniformly distributed in the liquid storage layer 20, and the compatible solvent is filled in the holes 21.

Example 3

This example is the same as example 1 and is not repeated except that the dyes of this example are latent dyes including 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, 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, a, 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.

The upper critical temperature indicator is simple in structure, small in size, convenient to operate and convenient to use. The temperature and running time warning and indicating device can be applied to labor insurance products for fresh food, plasma products, vaccines, cold chain transportation, high and low temperature working environment time warning and indication, special place time limit visiting certificates, temperature and running time warning and indication of precision instruments and equipment, home living environment temperature indication and the like, and the technical fields of monitoring storage temperature and time change and other temperature monitoring.

The technical principles of the present application have been described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the present application and is not to be construed in any way as limiting the scope of the application. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present application without inventive effort, which shall fall within the scope of the present application.

Claims

1. The utility model provides an go up critical temperature indicator, its characterized in that includes sealing layer (10), stock solution layer (20), isolation layer (30), dye layer (40) and substrate (50) in proper order, sealing layer (10) with substrate (50) centre gripping jointly stock solution layer (20), isolation layer (30) and dye layer (40), include phase change material in stock solution layer (20), when the indicator is in temperature more than the critical temperature, phase change material passes through isolation layer (30) with adsorb to after dye layer (40) contact in the isolation layer (30) the colour development.

2. The upper critical temperature indicator according to claim 1, wherein the liquid storage layer (20) is composed of a phase change material and a double-sided tape with a hole (21), the phase change material being filled in the hole (21).

3. The upper critical temperature indicator according to claim 2, characterized in that the number of holes (21) is one or more.

4. The upper critical temperature indicator according to claim 1 or 2, wherein the phase change material is selected from organic phase change materials having a melting point of not more than 250 ℃.

5. The upper critical temperature indicator according to claim 1, characterized in that the isolating layer (30) consists of a porous material for blocking or communicating the reservoir layer (20) with the dye layer (40).

6. The upper critical temperature indicator according to claim 5, wherein the isolating layer (30) is selected from one or more of synthetic paper, wood pulp paper, cotton pulp paper, filter paper, microporous polymer, cellulose-alkali material, sponge.

7. The upper critical temperature indicator according to claim 1, characterized in that the dye layer (40) comprises a dye, which is soluble in the phase change material.

8. The upper critical temperature indicator according to claim 1, wherein the substrate (50) is a release film or a film containing a back adhesive.

9. The upper critical temperature indicator according to claim 1, characterized in that the sealing layer (10) has thereon one or more of an electronic identification label, a two-dimensional code, a bar code.