Anti-falling RFID test tube label used in cryogenic environment and use method of anti-falling RFID test tube label

Abstract

The invention discloses an anti-falling RFID test tube label for a cryogenic environment and a using method. The label comprises an RFID chip layer, a white printing area, a transparent PET bearing layer and an adhesive layer which are sequentially arranged from inside to outside. The white printing area is arranged on one surface, facing the adhesive layer, of the transparent PET bearing layer; the RFID chip layer is combined to one side, back to the transparent PET bearing layer, of the white printing area through an adhesive; the area of the transparent PET bearing layer is larger than that of the white printing area, and the white printing area is arranged in the middle. The adhesive layer is arranged on the lower surface of the transparent PET bearing layer, and the label is integrally in a long strip shape and used for being wound and attached to the outer wall of a test tube through the adhesive layer. The three-layer composite structure with different sizes is matched with the glue material, so that the label has the characteristics of firm structure, low cost and convenience in operation in a cryogenic environment; the dual identification effects of clear printed characters and stable RFID signals in the cryogenic environment are achieved, and the requirements of long-term cryogenic storage and intelligent management are met.

Description

Technical Field

[0001] This invention relates to the field of radio frequency identification tag technology, and more specifically, to an anti-detachment RFID test tube tag for cryogenic environments and its usage method. Background Technology

[0002] In the long-term cryogenic storage of biomedical samples and reagents, tags are typically used to enable visual identification and intelligent traceability of sample information. Currently, common solutions fall into two main categories: one is RFID tags using high-cost cryogenic-specific adhesive materials, which, while possessing some environmental adaptability, have significantly high material costs, making large-scale deployment difficult; the other is using ordinary tags supplemented by manually wrapping transparent tape. While this method reduces material costs, it is cumbersome, inefficient, and manual wrapping can easily lead to tag wrinkles and poor adhesion, affecting text recognition and RFID signal stability.

[0003] Furthermore, existing cryogenic labels still have the following prominent problems in practical applications: First, after long-term storage in liquid nitrogen or cryogenic environments for 6 to 12 months, the labels often peel off. This is because most labels use a semi-enclosed adhesive structure, and the two ends of the label continue to bear tension after being cooled, while the adhesive on the back gradually decreases in the cryogenic environment, eventually causing the label to peel off from the test tube surface. Second, these specialized cryogenic labels are expensive, costing about 3 yuan per label, which limits their widespread use in large-scale sample libraries. In addition, to enhance the reliability of the adhesion, laboratory staff usually need to wrap transparent tape around the outside of the label again, which not only increases labor costs by more than double, but also introduces new problems such as inconsistent operation, tape wrinkling, and impaired identification.

[0004] Both of the above-mentioned solutions have significant shortcomings. They are prone to problems such as adhesive layer embrittlement, label detachment, and interlayer separation under repeated switching between cryogenic and ambient temperatures. Alternatively, they rely on manual labor, resulting in low efficiency and high overall costs. Therefore, there is an urgent need for an RFID test tube label solution that combines cost advantages, ease of operation, and stability in cryogenic environments. This solution should be able to achieve full-coverage adhesion to offset cold contraction tension while significantly reducing material and labor costs and improving the reliability and lifespan of the labels in extreme environments. Summary of the Invention

[0005] In view of the above-mentioned technical problems in related technologies, the present invention proposes an anti-detachment RFID test tube tag for cryogenic environments and a method of use, which can overcome the above-mentioned shortcomings of the prior art.

[0006] To achieve the above-mentioned technical objectives, the technical solution of the present invention is implemented as follows: A non-detachable RFID test tube tag for cryogenic environments; The RFID test tube label for cryogenic environments includes, from the inside out, an RFID chip layer, a white printing area, a transparent PET carrier layer, and an adhesive layer. The white printing area is located on the side of the transparent PET carrier layer facing the adhesive layer; The RFID chip layer is bonded to the side of the white printed area facing away from the transparent PET carrier layer by an adhesive. The area of ​​the transparent PET carrier layer is larger than the area of ​​the white printing area, and the white printing area is centered. The adhesive layer is disposed on the lower surface of the transparent PET carrier layer, and the label is in the shape of a long strip, which is used to wrap and adhere to the outer wall of the test tube through the adhesive layer.

[0007] Furthermore, the RFID chip layer includes an inlay structure consisting of an RFID chip and an antenna, the position of which corresponds to the white PET printing layer.

[0008] Furthermore, the RFID chip layer supports the high-frequency HF 13.56MHz or ultra-high-frequency UHF 860-960MHz bands.

[0009] Furthermore, the adhesive layer is a medical pressure-sensitive adhesive layer.

[0010] Furthermore, the thickness of the transparent PET carrier layer is 25μm to 50μm, and the light transmittance is not less than 92%.

[0011] Furthermore, the white printing area is a white ink layer formed on the surface of the transparent PET carrier layer by a printing process, or a white PET film layer laminated on the transparent PET carrier layer.

[0012] Furthermore, the RFID chip layer and the white PET printing layer are bonded together with epoxy adhesive.

[0013] Furthermore, the overall size of the label is 30mm × 60mm, and the size of the white PET printing layer is 30mm × 30mm.

[0014] Furthermore, the layers of the label are made by a dry lamination process or a printing lamination process.

[0015] According to another aspect of the present invention, a method for using an anti-detachment RFID test tube tag for cryogenic environments is provided; The method for using this anti-detachment RFID test tube tag for cryogenic environments includes the following steps: Sample information is printed on the white PET printing layer; Peel the label off the backing paper to expose the adhesive layer; Align and attach the exposed adhesive layer to the outer wall of the test tube, and then wrap it around the circumference of the test tube to make the label flatly wrap and fix it to the outer wall of the test tube, thus completing the information identification and physical reinforcement.

[0016] The beneficial effects of this invention are as follows: By designing a three-layer composite structure with differentiated dimensions and using conventional adhesive materials, stable adhesion can be achieved in cryogenic environments, thus enabling the label to have the characteristics of strong structure, low cost and convenient operation; thereby achieving the dual identification effect of ensuring clear and readable printed text and stable transmission of RFID signals in cryogenic environments, meeting the needs of long-term storage and intelligent management of biological samples. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a front view of a specific embodiment of an anti-detachment RFID test tube tag for cryogenic environments according to an embodiment of the present invention; Figure 2 This is a rear view of a specific embodiment of an anti-detachment RFID test tube tag for cryogenic environments according to an embodiment of the present invention; Figure 3 This is a structural block diagram of a specific embodiment of an anti-detachment RFID test tube tag for cryogenic environments according to an embodiment of the present invention; In the diagram: 1. RFID chip layer; 2. White PET printing layer; 3. Transparent PET carrier layer; 4. Adhesive layer. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention are within the scope of protection of the present invention.

[0020] like Figure 1-3 As shown, an anti-detachment RFID test tube label for cryogenic environments according to an embodiment of the present invention includes an RFID chip layer, a white printing area, a transparent PET carrier layer and an adhesive layer arranged sequentially from the inside to the outside. The white printing area is located on the side of the transparent PET carrier layer facing the adhesive layer; The RFID chip layer is bonded to the side of the white printed area facing away from the transparent PET carrier layer by an adhesive. The area of ​​the transparent PET carrier layer is larger than the area of ​​the white printing area, and the white printing area is centered. The adhesive layer is disposed on the lower surface of the transparent PET carrier layer, and the label is in the shape of a long strip, which is used to wrap and adhere to the outer wall of the test tube through the adhesive layer.

[0021] According to an embodiment of the present invention, an anti-detachment RFID test tube label for cryogenic environments is provided. In a specific embodiment, the RFID chip layer includes an inlay structure consisting of an RFID chip and an antenna, and its position corresponds to the white PET printing layer.

[0022] According to an embodiment of the present invention, an anti-detachment RFID test tube tag for cryogenic environments is provided. In a specific embodiment, the RFID chip layer supports the high frequency HF 13.56MHz or ultra-high frequency UHF 860-960MHz frequency band.

[0023] According to an embodiment of the present invention, an anti-detachment RFID test tube tag for cryogenic environments is provided. In a specific embodiment, the adhesive layer is a medical pressure-sensitive adhesive layer.

[0024] According to an embodiment of the present invention, an anti-detachment RFID test tube tag for cryogenic environments is provided. In a specific embodiment, the thickness of the transparent PET carrier layer is 25μm to 50μm, and the light transmittance is not less than 92%.

[0025] According to an embodiment of the present invention, a non-detachable RFID test tube tag for cryogenic environments is provided. In a specific embodiment, the white printing area is a white ink layer formed on the surface of the transparent PET carrier layer by a printing process, or a white PET film layer laminated on the transparent PET carrier layer.

[0026] According to an embodiment of the present invention, an anti-detachment RFID test tube label for cryogenic environments is provided, in a specific embodiment, wherein the RFID chip layer and the white PET printing layer are bonded together with epoxy adhesive.

[0027] According to an embodiment of the present invention, an anti-detachment RFID test tube tag for cryogenic environments is provided. In a specific embodiment, the overall size of the tag is 30mm × 60mm, and the size of the white PET printing layer is 30mm × 30mm.

[0028] According to an embodiment of the present invention, an anti-detachment RFID test tube tag for cryogenic environments is provided. In a specific embodiment, the layers of the tag are made by a dry lamination process or a printing lamination process.

[0029] Secondly, according to an embodiment of the present invention, a method for using an anti-detachment RFID test tube tag for cryogenic environments includes the following steps: Sample information is printed on the white PET printing layer; Peel the label off the backing paper to expose the adhesive layer; Align and attach the exposed adhesive layer to the outer wall of the test tube, and then wrap it around the circumference of the test tube to make the label flatly wrap and fix it to the outer wall of the test tube, thus completing the information identification and physical reinforcement.

[0030] To facilitate understanding of the above technical solutions of the present invention, the following detailed description of the above technical solutions of the present invention is provided through specific embodiments and usage methods.

[0031] In practical use, the present invention provides an anti-detachment RFID test tube tag for cryogenic environments; the tag has a long strip structure with an overall size of 30mm*60mm, and is adapted to a standard glass test tube with a diameter of 12mm. The tag, from the side furthest from the test tube to the side touching the test tube (i.e., from the inside out), comprises, in sequence, an RFID chip layer, a white PET printing layer, a transparent PET carrier layer, and an adhesive layer.

[0032] RFID chip layer: This is an RFID inlay, measuring 30mm x 30mm, containing an RFID chip and antenna supporting high-frequency HF 13.56MHz. The inlay is laminated with a layer of conventional epoxy adhesive to the non-printed surface of a white PET printed layer.

[0033] White PET Printed Layer: A 50μm thick matte printable white PET film, measuring 30mm x 30mm, is used. Its printed surface displays sample numbers, dates, and other visual information via heat transfer. This layer is centrally laminated to the underside of the transparent PET carrier layer.

[0034] Transparent PET carrier layer: A fully transparent medical-grade PET film with a thickness of 36μm and a light transmittance of 95%, measuring 30mm*60mm. Its area is larger than the white PET printed layer, completely enveloping and covering the latter. A conventional medical pressure-sensitive adhesive is uniformly coated on the side facing the test tube to form the adhesive layer, with a thickness of approximately 20μm.

[0035] The overall lamination of the label involves first bonding the white PET printing layer and the transparent PET carrier layer using a dry lamination process at 40℃ and 0.3MPa, followed by curing for 24 hours. Then, the RFID chip layer is laminated to the non-printed side of the white PET printing layer using conventional epoxy adhesive. Finally, the label is precision die-cut, with edge tolerances controlled within ±0.1mm to ensure no burrs and no excess adhesive.

[0036] When using it, first print the sample information on the white PET printing layer, then peel the label off the backing paper, align the adhesive layer with the outer wall of the test tube and wrap it once to stick it. This will simultaneously complete the sample identification, RFID signal implantation and label physical reinforcement without the need for additional transparent tape.

[0037] Testing showed that the tags in this embodiment, after being stored in liquid nitrogen at -196°C for 72 hours, did not detach, delaminate, or deform; the printed information remained clear, and the RFID signal reading was stable. Compared to traditional solutions, its overall cost is significantly reduced, and operational efficiency is greatly improved.

[0038] The anti-detachment RFID test tube tag achieves its identification and fixation functions through the following steps: First, based on the actual information of the test tube sample, identifiable text, barcodes, or QR codes are printed on the surface of the white PET printing layer using thermal transfer or inkjet printing. After printing, the label is peeled off from the backing paper to expose the underlying medical pressure-sensitive adhesive layer.

[0039] Next, attach the adhesive end of the label to the predetermined position on the outer wall of the test tube, and wrap it around the circumference of the test tube to make the label flatly cover the outer wall of the test tube. When wrapping, ensure that the printed area on the white PET printing layer faces the visible direction and is located in the center of the label; at the same time, since the area of ​​the transparent PET carrier layer is larger than the printing layer, its excess part can completely cover and wrap the edge of the printing layer and the surface of the test tube, forming a reinforced structure.

[0040] After wrapping, gently press the entire label, especially the edges, to ensure the adhesive layer makes full contact with the test tube wall, without air bubbles or wrinkles. This completes the visual identification of sample information, the embedding of the RFID signal carrier, and the overall physical reinforcement of the label in one step, eliminating the need for additional manual wrapping of transparent tape.

[0041] In practice, different frequency bands of tags can be selected based on the test tube diameter and storage environment. For example, high-frequency tags can be used for precious biological samples that need to be stored in liquid nitrogen for a long time, as their signals are more stable in low-temperature liquids; for reagent tubes that need to be stored in batches in ultra-low temperature freezers, ultra-high frequency tags can be used to improve the reading efficiency of batch inventory.

[0042] After the label is affixed, it can be placed in a cryogenic environment along with the test tube. Its three-layer composite structure, combined with conventional adhesive materials, can effectively withstand low-temperature impacts, prevent interlayer separation and overall detachment, while ensuring clear and legible printed information and stable transmission of RFID signals, meeting the intelligent management needs of the entire process from sample entry, storage, and transfer to outbound.

[0043] In summary, the following beneficial effects are achieved by utilizing the above-described technical solution of the present invention: 1. The structure is robust, and the anti-fall-off performance is significantly improved; By designing a three-layer composite structure with differentiated dimensions and employing a fully enclosed, strip-shaped wrapping method, the label can counteract the material shrinkage tension caused by temperature changes in a cryogenic environment, preventing the label ends from curling up or falling off. The transparent PET carrier layer has a larger area than the white PET printing layer, forming edge reinforcement, further enhancing the overall structural stability and interlayer adhesion of the label, effectively preventing delamination, peeling, or detachment during liquid nitrogen or long-term cryogenic storage for 6 to 12 months.

[0044] 2. Costs are significantly reduced, and it has the potential for large-scale application; This invention utilizes conventional medical pressure-sensitive adhesive and standardized PET film materials, achieving reliable adhesion in cryogenic environments through an optimized composite process, eliminating the need for expensive specialized cryogenic adhesives. The cost of a single label is only approximately 0.35 yuan, less than 1 / 10 of the approximately 3 yuan cost of traditional cryogenic labels. This significantly reduces material costs while maintaining performance, facilitating large-scale adoption in biobanks, research institutions, and medical facilities.

[0045] 3. Easy to operate, improving work efficiency; The label integrates an information printing area and RFID functionality. During use, a single wrapping and pasting is sufficient to simultaneously identify the sample, implant the RFID signal, and provide physical reinforcement, eliminating the need for subsequent wrapping with transparent tape. This not only avoids inconsistencies, tape wrinkling, and information obstruction caused by manual secondary wrapping, but also saves significant time and improves the efficiency and consistency of label application.

[0046] 4. Strong environmental adaptability, achieving reliable dual identification; Even in cryogenic environments, the tags maintain clear and legible printed text while ensuring stable RFID signal transmission, enabling reliable parallel operation of both visual and radio frequency identification methods. The structural design and material selection allow the tags to withstand cryogenic and ambient temperature cycling, making them suitable for various extreme environments such as liquid nitrogen storage and ultra-low temperature freezers, meeting the full-process requirements for long-term storage and intelligent management of biological samples.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A non-detachable RFID test tube tag for cryogenic environments, characterized in that, It includes, from the inside out, an RFID chip layer, a white printing area, a transparent PET carrier layer, and an adhesive layer; The white printing area is located on the side of the transparent PET carrier layer facing the adhesive layer; The RFID chip layer is bonded to the side of the white printed area facing away from the transparent PET carrier layer by an adhesive. The area of ​​the transparent PET carrier layer is larger than the area of ​​the white printing area, and the white printing area is centered. The adhesive layer is disposed on the lower surface of the transparent PET carrier layer, and the label is in the shape of a long strip, which is used to wrap and adhere to the outer wall of the test tube through the adhesive layer.

2. The RFID test tube tag for cryogenic environments according to claim 1, characterized in that, The RFID chip layer includes an inlay structure consisting of an RFID chip and an antenna, and its position corresponds to that of the white PET printing layer.

3. A non-detachable RFID test tube tag for cryogenic environments according to claim 2, characterized in that, The RFID chip layer supports the high-frequency HF 13.56MHz or ultra-high-frequency UHF 860-960MHz bands.

4. The RFID test tube tag for cryogenic environments according to claim 1, characterized in that, The adhesive layer is a medical pressure-sensitive adhesive layer.

5. The RFID test tube tag for cryogenic environments according to claim 1, characterized in that, The thickness of the transparent PET carrier layer is 25μm to 50μm, and the light transmittance is not less than 92%.

6. The RFID test tube tag for cryogenic environments according to claim 1, characterized in that, The white printing area is a white ink layer formed on the surface of the transparent PET carrier layer by a printing process, or a white PET film layer laminated on the transparent PET carrier layer.

7. The RFID test tube tag for cryogenic environments according to claim 2, characterized in that, The RFID chip layer and the white PET printing layer are bonded together with epoxy adhesive.

8. The RFID test tube tag for cryogenic environments according to claim 1, characterized in that, The overall size of the label is 30mm × 60mm, and the size of the white PET printing layer is 30mm × 30mm.

9. The RFID test tube tag for cryogenic environments according to claim 1, characterized in that, The labels are made by dry lamination or printing lamination processes.

10. A method of using an anti-detachment RFID test tube tag for cryogenic environments as described in any one of claims 1 to 9, characterized in that, Includes the following steps: Sample information is printed on the white PET printing layer; Peel the label off the backing paper to expose the adhesive layer; Align and attach the exposed adhesive layer to the outer wall of the test tube, and then wrap it around the circumference of the test tube to make the label flatly wrap and fix it to the outer wall of the test tube, thus completing the information identification and physical reinforcement.

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