Cold chain transportation label with irreversible temperature control color changing and tamper-proof functions

Abstract

The invention relates to a cold chain transportation label with irreversible temperature control color change and tamper-proof functions, and discloses a cold chain transportation label with irreversible temperature control color change and tamper-proof functions. According to the cold chain transportation label, irreversible color change response prompting of temperature abnormity in cold chain transportation is achieved through a detection assembly, and the label cannot be replaced or repeatedly used after being pasted through a pasting assembly; therefore, it is ensured that the temperature control state in the transportation process is real and visible, the label identity cannot be forged, and the authenticity and safety of prefabricated vegetable cold-chain logistics are guaranteed. The device is characterized in that the device comprises a detection assembly and a pasting assembly, a non-adhesive frame in the detection assembly is bonded with a surface transfer adhesive layer in the pasting assembly, the detection assembly is responsible for temperature control abnormity identification to judge whether the temperature is too high in the transportation process or not, and the pasting assembly ensures that labels cannot be forged, replaced and reused. The detection assembly comprises a surface protection film layer, a window limiting film layer, a non-adhesive frame, a temperature response color changing layer, a controllable fusing threshold value film layer and a color changing capsule.

Description

TECHNICAL FIELD

[0001] The cold chain transportation label with irreversible temperature control color change and anti-tampering function relates to a cold chain transportation label with irreversible temperature control color change and anti-tampering function applied in pre-prepared food cold chain logistics to identify whether temperature abnormality occurs in the transportation process, belongs to the technical field of cold chain logistics detection equipment, and particularly relates to a cold chain transportation label with irreversible temperature control color change and anti-tampering function that ensures the authenticity and security of pre-prepared food cold chain logistics by realizing irreversible color change response prompt for temperature abnormality in cold chain transportation through a detection assembly and realizing that the label cannot be replaced or reused after being pasted through a pasting assembly, so as to ensure that the temperature control state in the transportation process is real and visible, and the label identity cannot be counterfeited. BACKGROUND

[0002] Frozen pre-prepared food, as a commodity that needs to be stored at low temperature throughout the whole process, must rely on a cold chain system to ensure the integrity of temperature control. At present, common distribution methods for pre-prepared food include passive cold insulation forms such as foam box with ice bag, electric tricycle cold storage box, and express frozen package, which can delay temperature rise to a certain extent, but often cannot achieve precise temperature control throughout the whole process. In particular, in the process of urban terminal distribution, transfer, and unattended delivery, there is a risk of temporary temperature rise. Once the product is subjected to short-time temperature rise during transportation, it will be "frozen after thawing and then frozen again" in some areas, which is not easy to detect on the surface, but may cause food taste to decrease, nutrients to be lost, and even microorganisms to breed, affecting food safety. Since the frozen state can cover up the thawing history, consumers cannot directly judge whether the product has undergone the process of temperature rise and re-freezing when receiving the goods, which poses a food quality risk and makes it difficult to seek rights protection. Although there are electronic temperature recorders and heat-sensitive color-changing labels in the prior art, the former is not suitable for large-scale commodity application due to its high price, and the latter is mostly reversible color-changing structure, which is easy to be counterfeited or mis-triggered, and lacks anti-tampering ability, making it difficult to meet the dual needs of pre-prepared food cold chain for simple, reliable, one-time temperature control abnormality identification and replacement protection.

[0003] Publication No. CN216119260U discloses a safer cold chain transportation medicine label, which comprises, from bottom to top, a release layer, a sticking layer, a copper plate paper layer, a printing layer, and a color-changing layer. The upper end face of the printing layer is provided with anti-fake information, and the color-changing layer is printed on the anti-fake information. The color-changing layer comprises area A and area B. Area A is an irreversible low-temperature color-changing coating, and area B is an irreversible high-temperature color-changing coating. The utility model can effectively detect whether the environmental temperature is higher or lower than the optimal storage temperature range, and ensure that the effective medicine is always in a certain optimal temperature range during transportation, which is safe and reliable. However, the above-mentioned label does not have an anti-tearing and anti-transfer adhesive structure, and the label structure is only a simple stack, which can be re-pasted or transferred to other package surfaces after being torn off, and cannot effectively prevent human replacement, counterfeiting, or secondary use. SUMMARY

[0004] In order to improve the above situation, the cold chain transportation label with irreversible temperature control discoloration and anti-tampering function provides a through detection assembly to realize the irreversible discoloration response prompt of temperature abnormality in cold chain transportation, and through the pasting assembly, the label cannot be replaced or reused after pasting, so as to ensure that the temperature control state in the transportation process is real and visible, the label identity cannot be counterfeited, and the authenticity and safety of the cold chain logistics of the prefabricated food are ensured.

[0005] The cold chain transportation label with irreversible temperature control discoloration and anti-tampering function is realized in the following manner: the cold chain transportation label with irreversible temperature control discoloration and anti-tampering function comprises a detection assembly and a pasting assembly, characterized in that the non-adhesive frame in the detection assembly is bonded with the surface transfer adhesive layer in the pasting assembly, the detection assembly is responsible for temperature control abnormality identification to determine whether the temperature is too high during transportation, and the pasting assembly ensures that the label cannot be counterfeited, replaced or reused, the detection assembly comprises a surface protection film layer, a window limiting film layer, a non-adhesive frame, a temperature response discoloration layer, a controllable fuse threshold film layer and a discoloration capsule, the edge of the surface protection film layer is bonded and fixed with one side of the window limiting film layer by hot pressing or UV curing adhesive, and the window limiting film layer has a frame structure, the other side of the window limiting film layer is bonded with the top surface of the non-adhesive frame, the non-adhesive frame has a frame structure, and a groove is formed in the inner side of the middle part of the non-adhesive frame, one side edge of the temperature response discoloration layer is bonded with the inner top surface of the non-adhesive frame, the other side edge of the temperature response discoloration layer is bonded with one side edge of the controllable fuse threshold film layer, and the other side edge of the controllable fuse threshold film layer is bonded with the inner bottom surface of the non-adhesive frame, a discoloration capsule is sprayed on one side of the temperature response discoloration layer, and the discoloration capsules are uniformly distributed in the frame of the window limiting film layer in the vertical direction, the discoloration capsule encapsulates halogenated aromatic amine irreversible discoloring agent and phase change auxiliary solvent, the halogenated aromatic amine irreversible discoloring agent is crystal violet, the phase change auxiliary solvent is methyl caprylate or paraffin emulsion, and the capsule shell is prepared from a copolymer film material of gelatin and gum arabic, Preferably, the discoloration capsule has a microcapsule structure with a particle size of 10-80 μm, Preferably, the spraying amount of the capsule is controlled to be 0.05-0.2 mg / cm², Preferably, the initial color of the discoloring agent is grayish white, the color develops to red or blue-violet after heating and releasing, and the color development is irreversible, Preferably, the surface protective film layer is a transparent PET film with a thickness of 10-30 μm, Preferably, the temperature-responsive color-changing layer is made of high-affinity cellulose film, Preferably, the controllable melting threshold film layer uses EVA gel film with a phase transition temperature of -5°C or a cleavable hydrogel, The adhesive assembly comprises, in sequence, a surface transfer adhesive layer, a broken intermediate adhesive bridge layer, an adhesive support layer, and a release bottom film, The surface transfer adhesive layer is adhered to the surface of the broken intermediate adhesive bridge layer by a weak interface, The broken intermediate adhesive bridge layer and the adhesive support layer are connected by a directional micro-adhesive bridge structure, The release bottom film and the adhesive support layer are in a separable adhering state, Preferably, the surface transfer adhesive layer uses polyacrylate high transfer adhesive, Preferably, the adhesive layer can form a "VOID" residual pattern when peeled off and attached to the surface of the adherend, Preferably, the broken intermediate adhesive bridge layer is a low-surface-energy structure or a foam structure treated by UV embrittlement, Preferably, the unit adhesion force of the micro-adhesive bridge structure is controlled at 2-5 N / cm², Preferably, the overall thickness of the adhesive assembly is controlled at 5-15 μm, Preferably, the adhesive support layer is a medical-grade hot melt pressure-sensitive adhesive with the ability to maintain adhesion in an environment below -20°C, Preferably, the release bottom film is a PET film treated with silicone oil or a glassine paper, Preferably, the overall thickness of the label is controlled at 0.3-1.2 mm, Further, the release bottom film side protrudes a tear-opening corner, which is integrally formed with the release bottom film and made of the same material, Further, a unique number is printed on the top surface of the surface protective film layer near the edge, which can be in the form of a number, a letter, or a two-dimensional code, and has a unique identification function. Advantages

[0006] I. The color change result is irreversible, avoiding the risk of disguising and refreezing.

[0007] II. The trace is left after tearing, effectively preventing the cold chain information from being replaced, counterfeited, or repeatedly used, and ensuring the authenticity of the delivery information.

[0008] III. Easy to operate and easy for users to judge.

[0009] IV. Simple structure and low cost. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 FIG. 1 is a perspective view of a cold chain transport label with irreversible temperature control discoloration and anti-tampering function according to the present application; Figure 2 FIG. 2 is a perspective view of embodiment 2 of a cold chain transport label with irreversible temperature control discoloration and anti-tampering function according to the present application; Figure 3 FIG. 3 is a perspective view of embodiment 3 of a cold chain transport label with irreversible temperature control discoloration and anti-tampering function according to the present application. DRAWINGS

[0011] Wherein: surface protective film layer (1), window limiting film layer (2), discoloration capsule (3), temperature response discoloration layer (4), controllable fuse threshold film layer (5), non-adhesive frame (6), surface transfer adhesive layer (7), broken intermediate adhesive bridge layer (8), adhesive support layer (9), release bottom film (10), tear opening angle (11), unique number (12). DETAILED DESCRIPTION Embodiment 1

[0012] The cold chain transport label with irreversible temperature control discoloration and anti-tampering function according to the present application is implemented as follows: The cold chain transport label with irreversible temperature control discoloration and anti-tampering function according to the present application comprises a detection assembly and a pasting assembly, characterized in that the non-adhesive frame (6) in the detection assembly is bonded with the surface transfer adhesive layer (7) in the pasting assembly, the detection assembly is responsible for temperature control abnormality identification to determine whether the temperature is too high during transportation, and the pasting assembly ensures that the label cannot be counterfeited, replaced, or reused, The detection assembly comprises a surface protective film layer (1), a window limiting film layer (2), a non-adhesive frame (6), a temperature response discoloration layer (4), a controllable fuse threshold film layer (5), and a discoloration capsule (3), The edge of the surface protective film layer (1) is bonded and fixed with one side of the window limiting film layer (2) by hot pressing or UV curing adhesive, and the window limiting film layer (2) has a frame structure, The other side of the window limiting film layer (2) is bonded with the top surface of the non-adhesive frame (6), the non-adhesive frame (6) has a frame structure, and a groove is formed in the inner side surface of the middle part of the non-adhesive frame (6), One side edge of the temperature response discoloration layer (4) is bonded with the inner top surface of the non-adhesive frame (6), The other side edge of the temperature response discoloration layer (4) is bonded with one side edge of the controllable fuse threshold film layer (5), and the other side edge of the controllable fuse threshold film layer (5) is bonded with the inner bottom surface of the non-adhesive frame (6), The temperature-responsive color-changing layer (4) is sprayed with color-changing capsules (3) on one side, and the color-changing capsules (3) are uniformly distributed in the frame of the window limiting film layer (2) in the vertical direction, The color-changing capsules (3) encapsulate halogenated aromatic amine irreversible color-changing agents and phase change co-solvents, the halogenated aromatic amine irreversible color-changing agent is crystal violet, and the phase change co-solvent is methyl caprylate or paraffin emulsion, and the capsule shell is prepared from a copolymerization film material of gelatin and gum arabic, Preferably, the color-changing capsules (3) are microcapsule structures with a particle size of 10-80 μm, Preferably, the spraying amount of the capsules is controlled to be 0.05-0.2 mg / cm², Preferably, the color-changing agent has an initial color of grayish white, and after release, the color changes to red or blue-violet, and the color change is irreversible, Preferably, the surface protection film layer (1) is a transparent PET film with a thickness of 10-30 μm, Preferably, the temperature-responsive color-changing layer (4) is made of high-affinity cellulose film, Preferably, the controllable melting threshold film layer (5) is selected from EVA gel film with a phase change temperature of-5℃ or cleavable hydrogel, The adhesive assembly comprises, in sequence, a surface transfer adhesive layer (7), a broken intermediate adhesive bridge layer (8), an adhesive support layer (9), and a release bottom film (10), The surface transfer adhesive layer (7) is adhered to the surface of the broken intermediate adhesive bridge layer (8) by a weak interface method, The broken intermediate adhesive bridge layer (8) and the adhesive support layer (9) are connected by a directional micro-adhesive bridge structure, The release bottom film (10) and the adhesive support layer (9) are in a separable adhering state, Preferably, the surface transfer adhesive layer (7) uses a polyacrylate high transfer adhesive, Preferably, the adhesive layer can form a residual pattern of “VOID” when peeled off and attached to the surface of the adherend, Preferably, the broken intermediate adhesive bridge layer (8) is a low surface energy structure or a foam structure treated by UV embrittlement, Preferably, the unit adhesion force of the micro-adhesive bridge structure is controlled to be 2-5 N / cm², Preferably, the overall thickness of the adhesive assembly is controlled to be 5-15 μm, Preferably, the adhesive support layer (9) is a medical-grade hot melt pressure-sensitive adhesive, which has the ability to maintain adhesion in an environment below-20℃, Preferably, the release bottom film (10) is a silicon oil treated PET film or a glassine paper, Preferably, the overall thickness of the label is controlled between 0.3-1.2mm, In use, first take the label out of the low-temperature storage environment to prevent the color-changing capsule (3) from triggering prematurely, tear off the release liner (10) on the back of the label to expose the lowermost adhesive support layer (9), then paste the label on the surface of the outer packaging bag of the frozen prepared dish, press the edges of the label lightly to make it firmly attached, and pay attention to avoid pressing the middle of the label to prevent breaking the internal color-changing capsule (3) or affecting the temperature control response structure. During cold chain transportation, if the temperature is always below the set threshold, the controllable fuse threshold film layer (5) inside the label remains intact, and the color-changing capsule (3) does not release the contents. The color developing window area is displayed in the initial grayish white state through the window limiting film layer (2). If the temperature rises above the set threshold during transportation, the temperature control film layer (5) softens and fuses, the capsule (3) breaks, and the released color-changing agent reacts with the temperature-responsive color-changing layer (4) below, causing the window to turn red and undergo irreversible changes. The user can observe the color change through the window when receiving the goods to determine whether there is temperature control abnormality during transportation, and at the same time check whether the label is intact and adhered to the surface of the packaging bag. If the label is artificially torn off, the surface transfer adhesive layer (7) will leave some adhesive residue on the packaging bag, forming a "VOID" mark, and the broken intermediate adhesive bridge layer (8) will be damaged. The label structure cannot be reattached, thereby achieving effective tamper-proofing and identification, and ensuring that the cold chain authenticity during transportation can be verified; Example 2

[0013] The difference between this embodiment and Example 1 is that the release liner (10) has a tear-off corner (11) protruding from the side. The tear-off corner (11) is integrally formed with the release liner (10) and made of the same material. In use, the user can easily grab and peel off the release liner (10) through the tear-off corner (11) to expose the adhesive support layer (9), thereby completing the activation operation before the label is attached, avoiding the inconvenience of peeling off the edge or structural damage, and improving the operation convenience and product use experience. Example 3

[0014] The difference between this embodiment and Example 1 is that the surface protection film layer (1) has a unique number (12) printed on the top surface near the edge. The unique number (12) can be in the form of numbers, letters, or a two-dimensional code, and has a unique identification function. In use, the number can be bound to the product batch, logistics order, or cold chain traceability system to achieve one-to-one matching of the label body and product information, prevent the label from being replaced or repacked during the flow process, and facilitate the traceability management and responsibility identification of cold chain abnormal events. The design that the non-adhesion frame (6) in the detection assembly is bonded with the surface transfer adhesive layer (7) in the pasting assembly can realize integrated assembly of the color change response structure and the anti-fake pasting structure, ensure that the color change reaction module works stably after the label is pasted and cannot be transferred or replaced, and improve the authenticity of the temperature control abnormal record and the uniqueness of the label identity. The design that the color change capsules (3) are sprayed on one side of the temperature response color change layer (4) and uniformly distributed in the frame of the window limiting film layer (2) in the vertical direction can ensure that the color development window develops color uniformly as a whole after the heat response is triggered, avoid local color deviation or identification difficulty, and improve the consistency of temperature control abnormality judgment and the visual identification effect. The design that the color change capsules (3) encapsulate halogenated aromatic amine irreversible color change agents and phase change cosolvents can automatically release the color change agent and react with the lower layer when the temperature exceeds the threshold value, irreversibly develop color, and cannot be restored even after subsequent re-freezing, thereby ensuring that the cold chain abnormality cannot be disguised and improving the monitoring reliability. The design that the surface transfer adhesive layer (7) is bonded on the surface of the broken intermediate adhesive bridge layer (8) in a weak interface manner can transfer the pattern to the surface of the adherend to form a residual trace when the label is removed, damage the intermediate adhesive bridge structure at the same time, prevent the label from being used again, and effectively realize the one-time adhesion and anti-replacement function. The design that the release bottom film (10) and the adhesive support layer (9) are in a separable attached state can provide adhesion protection before the label is enabled, prevent the adhesive layer from being contaminated or prematurely aged, facilitate the user to quickly remove during use, improve the use convenience, and ensure the integrity of the pasting operation. The purpose of achieving irreversible color change response prompts for temperature abnormalities in cold chain transportation through the detection assembly, realizing that the label cannot be replaced after being pasted through the pasting assembly, ensuring that the temperature control state during transportation is real and visible, and the label identity cannot be counterfeited, and guaranteeing the authenticity and safety of the cold chain logistics of pre-prepared food.

[0015] It should be noted that unless otherwise explicitly specified and limited, the terms "placed", "connected", and "connected" should be broadly understood, for example, can be fixed connection modes such as folding connection, rivet connection, pin connection, bonding connection, and welding connection, or can be detachable connection modes such as threaded connection, buckle connection, and hinge connection, or integral connection, or electrical connection, or direct connection, or indirect connection through an intermediate medium, or internal communication of two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0016] It should be further pointed out that, in the description of the above specific embodiments, only the differences from other embodiments are described for the sake of simplicity and clarity, but those skilled in the art should know that the above specific embodiments are also independent technical solutions themselves.

Claims

1. A cold chain transportation label with irreversible temperature control color change and anti-tampering function, comprising a detection assembly and a pasting assembly, characterized in that: The non-adhesion frame in the detection assembly is bonded with the surface transfer adhesive layer in the pasting assembly, the detection assembly is responsible for the temperature control abnormality identification to determine whether the temperature is too high during transportation, the pasting assembly ensures that the label cannot be counterfeited, replaced or reused, the detection assembly includes a surface protection film layer, a window limiting film layer, a non-adhesion frame, a temperature response color-changing layer, a controllable melting threshold film layer and a color-changing capsule, the edge of the surface protection film layer is bonded and fixed with one side of the window limiting film layer by hot pressing or UV curing adhesive, the other side of the window limiting film layer is bonded with the top surface of the non-adhesion frame, the inner side of the middle part of the non-adhesion frame is provided with a groove, one side of the temperature response color-changing layer is bonded with the inner top surface of the non-adhesion frame, the other side of the temperature response color-changing layer is bonded with one side of the controllable melting threshold film layer, the other side of the controllable melting threshold film layer is bonded with the inner bottom surface of the non-adhesion frame, the one side of the temperature response color-changing layer is sprayed with a color-changing capsule, the color-changing capsule encapsulates halogenated aromatic amine irreversible color-changing agent and phase change co-solvent, the pasting assembly includes a surface transfer adhesive layer, a broken intermediate adhesive bridge layer, an adhesive support layer and a release bottom film in sequence, the surface transfer adhesive layer is bonded to the surface of the broken intermediate adhesive bridge layer by a weak interface, the broken intermediate adhesive bridge layer and the adhesive support layer are connected by a directional micro adhesive bridge structure, and the release bottom film and the adhesive support layer are in a separable adhering state. 2.The cold-chain transportation label with irreversible temperature-controllable color change and anti-tampering functions according to claim 1, characterized in that The release bottom film side protrudes a tear opening angle, the tear opening angle is integrally formed with the release bottom film and has the same material. 3.The cold-chain transportation label with irreversible temperature-controllable color change and anti-tampering functions according to claim 1, characterized in that The top surface of the surface protection film layer is printed with a unique number near the edge, the unique number can be in the form of numbers, letters or two-dimensional codes, and has a unique identification function. 4.The cold-chain transportation label with irreversible temperature-controllable color change and anti-tampering functions according to claim 1, characterized in that The window limiting film layer has a frame structure, the non-adhesion frame has a frame structure, and the color-changing capsules are uniformly distributed in the frame of the window limiting film layer in the vertical direction. 5.The cold-chain transportation label with irreversible temperature-controllable color change and anti-tampering function according to claim 1, characterized in that The halogenated aromatic amine irreversible color-changing agent is crystal violet, the phase change co-solvent is methyl caprylate or paraffin emulsion, the capsule shell is prepared from a copolymer film material of gelatin and gum arabic, the color-changing capsule has a microcapsule structure with a particle size of 10-80 μm, and the capsule spraying amount is controlled to be 0.05-0.2 mg / cm². 6.The cold-chain transportation label with irreversible temperature-controllable color change and anti-tampering functions according to claim 1, characterized in that The initial color of the color-changing agent is grayish white, the color changes to red or blue purple after heating and releasing, the color change is irreversible, the surface protection film layer is a transparent PET film with a thickness of 10-30 μm, and the temperature response color-changing layer is made of high affinity cellulose film. 7.The cold-chain transportation label with irreversible temperature-controllable color change and anti-tampering function according to claim 1, characterized in that The controllable melting threshold film layer selects EVA gel film or cleavable hydrogel with a phase transition temperature of-5℃, the overall thickness of the label is controlled to be 0.3-1.2 mm, and the surface transfer adhesive layer uses polyacrylate high transfer adhesive. 8.The cold-chain transportation label with irreversible temperature-controllable color change and anti-tampering functions according to claim 1, characterized in that The adhesive layer can form a residual pattern of "VOID" when peeled off and attached to the surface of the adherend, and the broken intermediate adhesive bridge layer has a low surface energy structure or a bubble structure treated by UV embrittlement. 9.The cold-chain transportation label with irreversible temperature-controllable color change and anti-tampering function according to claim 1, characterized in that The unit adhesion force of the micro adhesive bridge structure is controlled to be 2-5 N / cm², and the overall thickness of the pasting assembly is controlled to be 5-15 μm. 10.The cold-chain transportation label with irreversible temperature-controllable color change and anti-tampering function according to claim 1, characterized in that The adhesive support layer is a medical grade hot melt pressure sensitive adhesive, which has the ability to maintain adhesion in an environment below -20℃, and the release backing is a silicon oil treated PET film or glassine paper.

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