Critical temperature indication label

Abstract

The utility model discloses a critical temperature indication label, the critical temperature indication label comprises a substrate layer, an image-text layer and a barrier layer, the image-text layer is laminated above the substrate layer, the image-text layer comprises a thermosensitive area, thermosensitive components are arranged in the thermosensitive area, and the thermosensitive components can be decomposed at a predetermined temperature to release gas; and the barrier layer is arranged above the image-text layer in a stacked manner. According to the critical temperature indication label, the image-text layer is arranged between the substrate layer and the barrier layer, the image-text layer comprises the thermosensitive area, the thermosensitive area comprises the thermosensitive component, the thermosensitive component can be decomposed and release gas at the preset temperature, and under the barrier action of the substrate layer and the barrier layer, the gas cannot be diffused to the outside, so that the critical temperature indication label can be used for indicating the critical temperature. And the bubbles are gathered between the substrate layer and the barrier layer, so that the existence of the bubbles can be used for indicating whether the environment temperature is higher than the preset temperature and further indicating whether the product is deteriorated.

Description

Technical Field

[0001] This utility model relates to the field of indicator technology, and in particular to a critical temperature indicator label. Background Technology

[0002] Some heat-sensitive products require monitoring of their upper limit storage temperature. Exceeding this limit significantly shortens their shelf life. For example, live bacteria preparations like Bifidobacterium and opened insulin products need to be stored below 35 degrees Celsius, otherwise they will quickly become ineffective. Currently, refrigeration is the common method of storage. However, in certain special circumstances, such as when traveling, it is impossible to refrigerate these items. Therefore, it is necessary to monitor the upper limit storage temperature for these items, but currently, there are no inexpensive products available on the market for this purpose. Utility Model Content

[0003] Therefore, it is necessary to provide a critical temperature indicator label to solve the above problems.

[0004] A critical temperature indicator label, comprising:

[0005] basal layer;

[0006] A graphic layer is stacked on top of the base layer. The graphic layer includes a thermosensitive region containing a thermosensitive component that can decompose and release gas at a predetermined temperature. A barrier layer is also stacked on top of the graphic layer.

[0007] In one embodiment, the heat-sensitive component is a bicarbonate or an ammonium salt.

[0008] In one embodiment, the bicarbonate is selected from at least one of sodium bicarbonate, potassium bicarbonate, calcium bicarbonate, and magnesium bicarbonate.

[0009] In one embodiment, the ammonium salt is selected from at least one of ammonium bicarbonate or ammonium chloride, ammonium sulfate, ammonium carbonate, and ammonium phosphate.

[0010] In one embodiment, the graphic layer is white or transparent.

[0011] In one implementation, the graphic layer is set as a warning graphic.

[0012] In one embodiment, the graphic layer further includes a reaction region, and the thermally sensitive region is disposed adjacent to the reaction region.

[0013] In one embodiment, the substrate layer is selected from any one of paper, PVC film, PET film or PP film.

[0014] In one embodiment, the barrier layer is selected from any one of PET film, PVC film, or PP film.

[0015] In one embodiment, the substrate layer is further provided with an adhesive layer and a release layer on the side away from the graphic layer.

[0016] The aforementioned critical temperature indicator label has an image layer located between the base layer and the barrier layer. The image layer contains a thermosensitive area containing a thermosensitive component, which can decompose and release gas at a predetermined temperature. Due to the barrier effect of the base layer and the barrier layer, the gas cannot diffuse to the outside and will accumulate between the base layer and the barrier layer to form bubbles. Therefore, the presence of bubbles can be used to indicate whether the ambient temperature is higher than the predetermined temperature, thereby indicating whether the product has deteriorated. Attached Figure Description

[0017] Figure 1 A schematic diagram of the critical temperature indicator tag structure according to one embodiment;

[0018] Figure 2 A schematic diagram illustrating the arrangement of the heat-sensitive area and the reaction area in one embodiment;

[0019] Figure 3 This is a schematic diagram of a critical temperature indicator tag structure according to another embodiment. Detailed Implementation

[0020] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is considered to be "connected" or "connected" to another element, it can be directly connected to the other element or there may be an intervening element. The terms "upper," "lower," "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0022] The critical temperature indicator label will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] Please see Figure 1One embodiment of the critical temperature indicator label includes a base layer 10, a graphic layer 20 and a barrier layer 30 stacked together.

[0024] The base layer 10 is used to support the graphic layer 20 and has good airtightness to prevent gas from leaking out through the base layer 10.

[0025] Optionally, the substrate 10 material includes, but is not limited to, paper, PVC film, PET film or PP film.

[0026] In this embodiment, the base layer 10 is paper, and a protective layer is stacked on the base layer 10. The airtightness of the base layer 10 can be enhanced by setting the protective layer.

[0027] Optionally, the protective layer material includes, but is not limited to: UV varnish, PP film, PET film or PVC film.

[0028] The graphic layer 20 is stacked on the base layer 10. The graphic layer 20 includes a thermally sensitive area 21, in which a thermally sensitive component is disposed. The thermally sensitive component can decompose and release gas when the ambient temperature exceeds a predetermined temperature. The gas can accumulate and form bubbles under the barrier effect of the base layer 10 and the barrier layer 30.

[0029] Specifically, the thermally sensitive area 21 is printed with thermal ink, which can be prepared by adding thermally sensitive components to ordinary ink. Optionally, the ordinary ink can be commercially available offset printing ink, gravure printing ink, screen printing ink, flexographic printing ink, or letterpress printing ink.

[0030] Optionally, the heat-sensitive component is a bicarbonate or an ammonium salt. When heated, the bicarbonate can decompose to produce carbon dioxide, and the ammonium salt can decompose to produce ammonia.

[0031] Optionally, the bicarbonate is selected from at least one of sodium bicarbonate, potassium bicarbonate, calcium bicarbonate, and magnesium bicarbonate. The ammonium salt is selected from at least one of ammonium bicarbonate, ammonium chloride, ammonium sulfate, ammonium carbonate, and ammonium phosphate.

[0032] In this embodiment, the heat-sensitive component is ammonium bicarbonate, which can decompose and release ammonia, carbon dioxide and water vapor at 35°C. Therefore, this temperature can be used to monitor whether the storage environment of products such as Bifidobacteria and insulin exceeds the upper limit.

[0033] In another embodiment, the heat-sensitive component is sodium bicarbonate, which can decompose and release CO2 gas at 60°C. Therefore, it can be used to monitor whether the ambient temperature of enclosed spaces such as containers exceeds 60 degrees Celsius.

[0034] In another embodiment, the heat-sensitive component is a combination of sodium bicarbonate and citric acid, where citric acid acts as a reaction catalyst to accelerate the decomposition reaction rate of sodium bicarbonate, thereby improving the reaction sensitivity.

[0035] Optionally, the thermal area 21 can be set by offset printing, gravure printing, screen printing or flexographic printing.

[0036] In this embodiment, the thermally sensitive area 21 is white or transparent. When the ambient temperature is lower than a predetermined temperature, the warning text is white or transparent and can be hidden in the white background, thus being invisible to the naked eye. When the ambient temperature exceeds the predetermined temperature, the thermally sensitive component in the thermally sensitive area 21 decomposes and releases gas. The gas will accumulate in the thermally sensitive area 21 to form bubbles, thereby indicating the environment through the bubbles.

[0037] Preferably, the thermally sensitive area 21 is provided with warning graphics, and the gas accumulates to form bubbles with warning graphics.

[0038] In another implementation, please refer to Figure 2 The graphic layer 20 also includes a reaction zone 22, in which a pH indicator is disposed, and the reaction zone 22 is adjacent to the thermosensitive zone 21. When the ambient temperature is higher than a predetermined temperature, the thermosensitive zone 21 will release a non-neutral gas. Therefore, the non-neutral gas can cause the pH indicator to change color, thereby making the indication effect more obvious.

[0039] Preferably, the reaction zone 22 is located in the center of the thermosensitive zone 21. When the gas released from the thermosensitive zone 21 forms bubbles, as the bubble pressure increases, the entire reaction zone 22 will eventually be exposed under the bubbles, thereby forming a clear indicator area through color change.

[0040] Optionally, pH indicators include, but are not limited to: phenol red, bromothymol blue, bromocresol green, bromocresol purple, m-cresol purple, phenolphthalein, thymolphthalein, thymol blue, methyl red, methyl orange, bromophenol blue, gentian violet, and alizarin.

[0041] The barrier layer 30 is stacked on top of the graphic layer 20. The barrier layer 30 has transparent characteristics and good airtightness, and can prevent gas molecules from penetrating rapidly.

[0042] Optionally, the materials used to prepare the barrier layer 30 include, but are not limited to, PET film, PVC film and PP film.

[0043] In another implementation, please refer to Figure 3An adhesive layer 40 is provided on the side of the base layer 10 away from the graphic layer 20, and a release layer 50 is provided on the side of the adhesive layer 40 away from the base layer 10. The adhesive layer 40 is used to attach the indicator label to the surface of the object, and the release layer 50 is used to protect the adhesive layer 40 and prevent the adhesive layer 40 from sticking together before use.

[0044] The aforementioned critical temperature indicator label has an image layer 20 disposed between a base layer 10 and a barrier layer 30. The image layer 20 includes a thermosensitive area 21 containing a thermosensitive component. This thermosensitive component can decompose and release gas at a predetermined temperature. Due to the barrier effect of the base layer 10 and the barrier layer 30, the gas cannot diffuse to the outside and will accumulate between the base layer 10 and the barrier layer 30 to form bubbles. Therefore, the presence of bubbles can be used to indicate whether the ambient temperature is higher than the predetermined temperature, thereby indicating whether the product has deteriorated.

[0045] The following are specific examples.

[0046] Example 1

[0047] Please see Figure 1 This embodiment provides a critical temperature indicator label, including a base layer 10, an image layer 20 and a barrier layer 30 stacked together. The image layer 20 includes a thermally sensitive area 21, and a thermally sensitive component is disposed in the thermally sensitive area 21.

[0048] In this embodiment, the base layer 10 is paper, the thermally sensitive area 21 is printed with thermal ink, the thermal ink is prepared by heating sodium bicarbonate in commercially available offset white ink, the prepared thermally sensitive area 21 is white, and the barrier layer 30 is a PP film.

[0049] The aforementioned critical temperature indicator label has an image layer 20 disposed between the base layer 10 and the barrier layer 30. The image layer 20 contains a thermosensitive area 21, which contains a thermosensitive component. This thermosensitive component can decompose and release gas when the ambient temperature exceeds 60°C. Under the barrier effect of the base layer 10 and the barrier layer 30, the gas cannot diffuse to the outside and will accumulate between the base layer 10 and the barrier layer 30 to form bubbles. Therefore, the presence of bubbles can be used to indicate whether the ambient temperature is higher than 60°C, thereby indicating whether the product has deteriorated.

[0050] Example 2

[0051] Please see Figure 2 This embodiment provides a critical temperature indicator label, which is similar to the critical temperature indicator label provided in Embodiment 1, except that: (1) the graphic layer 20 includes a thermosensitive area 21 and a reaction area 22 arranged adjacent to each other, and the reaction area 22 is provided with a pH indicator phenol red. (2) the thermosensitive component is ammonium bicarbonate.

[0052] The aforementioned critical temperature indicator label, when the ambient temperature exceeds 35°C, allows the thermosensitive zone 21 to release alkaline ammonia gas. This ammonia gas causes the pH indicator to change from orange to red, thus making the indication more pronounced. Furthermore, this reaction temperature can be used to indicate whether the storage environment for Bifidobacteria and opened insulin exceeds acceptable limits.

[0053] Example 3

[0054] Please see Figure 3 The critical temperature indicator label provided in this embodiment is similar to the critical temperature indicator label provided in embodiment 2, except that: an adhesive layer 40 is provided on the side of the base layer 10 away from the graphic layer 20, and a release layer 50 is provided on the side of the adhesive layer 40 away from the base layer 10.

[0055] The aforementioned critical temperature indicator label has an adhesive layer 40 for attaching the indicator label to the surface of an object, and a release layer 50 for protecting the adhesive layer 40 and preventing it from sticking together before use.

[0056] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A critical temperature indicator label, characterized in that, include: basal layer; A graphic layer, stacked on top of the base layer, includes a thermally sensitive region containing a thermally sensitive component that can decompose and release gas at a predetermined temperature; and A barrier layer is stacked on top of the graphic layer.

2. The critical temperature indicator label according to claim 1, characterized in that, The heat-sensitive component is a bicarbonate or an ammonium salt.

3. The critical temperature indicator label according to claim 2, characterized in that, The bicarbonate is selected from at least one of sodium bicarbonate, potassium bicarbonate, calcium bicarbonate, and magnesium bicarbonate.

4. The critical temperature indicator label according to claim 2, characterized in that, The ammonium salt is selected from at least one of ammonium bicarbonate or ammonium chloride, ammonium sulfate, ammonium carbonate, and ammonium phosphate.

5. The critical temperature indicator label according to claim 1, characterized in that, The graphic layer is white or transparent.

6. The critical temperature indicator label according to claim 1, characterized in that, The graphic layer is set with warning graphics and text.

7. The critical temperature indicator label according to claim 1, characterized in that, The graphic layer also includes a reaction zone, and the thermally sensitive zone is disposed adjacent to the reaction zone.

8. The critical temperature indicator label according to claim 1, characterized in that, The base layer is selected from any one of paper, PVC film, PET film or PP film.

9. The critical temperature indicator label according to claim 1, characterized in that, The barrier layer is selected from any one of PET film, PVC film or PP film.

10. The critical temperature indicator label according to any one of claims 1-9, characterized in that, The substrate layer is further provided with an adhesive layer and a release layer on the side away from the graphic layer.

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