Delayed fluorescent laser anti-counterfeiting adhesive tape

Abstract

The utility model belongs to the field of packaging materials, and particularly relates to a delay fluorescent laser anti-counterfeiting adhesive tape, which is characterized in that a plurality of delay fluorescent pattern layers, a plurality of color printing pattern layers, a plurality of laser information layers, a plurality of reflecting layers and a plurality of glue layers are sequentially arranged on the front surface of an adhesive tape base material from bottom to top, and a release silicone oil layer is arranged on the back surface of the adhesive tape base material. The fluorescence disappearance time of each time-delay fluorescent pattern layer is different, and the plurality of time-delay fluorescent pattern layers, the color printing pattern layer and the laser information layer are printed in a counterpoint or sleeving manner. The anti-counterfeiting label has the advantages of reasonable structure and good anti-counterfeiting performance. According to the utility model, the laser anti-counterfeiting technology and the delayed fluorescent anti-counterfeiting technology are applied to the adhesive tape, so that the anti-counterfeiting performance of the adhesive tape is improved.

Description

Technical Field

[0001] This utility model belongs to the field of packaging materials, specifically relating to a time-delayed fluorescent laser anti-counterfeiting tape. Background Technology

[0002] Anti-counterfeiting tape is a crucial anti-counterfeiting measure during product sealing and distribution. Currently, commonly used anti-counterfeiting technologies for tapes include laser holographic anti-counterfeiting and fluorescent anti-counterfeiting. Most current anti-counterfeiting tapes employ a single anti-counterfeiting technology. For example, the patent granted by the Chinese Patent Office on April 19, 2024, with publication number CN220812275U, entitled "A Degradable and Environmentally Friendly Holographic Anti-counterfeiting Tape," features laser holographic anti-counterfeiting effects. Another example is the utility model patent granted by the Chinese Patent Office on January 17, 2023, with publication number CN218321208U, entitled "A Fluorescent Indicator PVC Tape," which uses a fluorescent powder layer to provide excellent fluorescent indication.

[0003] The tapes using the aforementioned single anti-counterfeiting technology have the drawbacks of limited effectiveness and ease of counterfeiting. Combining laser holographic anti-counterfeiting technology with fluorescent anti-counterfeiting technology would greatly improve the anti-counterfeiting performance of the tapes. Utility Model Content

[0004] The purpose of this utility model is to provide a time-delayed fluorescent laser anti-counterfeiting tape, which applies laser anti-counterfeiting technology and time-delayed fluorescence technology to the tape, thereby improving the anti-counterfeiting performance.

[0005] This utility model is achieved through the following technical solution:

[0006] A type of time-delay fluorescent laser anti-counterfeiting tape is characterized by having a time-delay fluorescent pattern layer, a color-printed pattern layer, a laser information layer, a reflective layer, and an adhesive layer arranged sequentially from bottom to top on the front side of the tape substrate. A release silicone oil layer is provided on the back side of the tape substrate. The time-delay fluorescent pattern layer has multiple layers, each with a different fluorescence disappearance time. The reflective layer has several cutout windows, and the time-delay fluorescent pattern layer and the color-printed pattern layer are aligned or overprinted at the cutout windows.

[0007] The time-delayed fluorescent pattern layer of this invention is formed by flexible printing ink of nitrogen- and fluorine-doped copolymer fluorescent carbon quantum dots. The nitrogen- and fluorine-doped copolymer fluorescent carbon quantum dot material is a mature fluorescent material.

[0008] The adhesive tape substrate of this utility model includes films such as BOPP, BOPET, and PVC.

[0009] The time-delay fluorescent pattern layer and the color-printed pattern layer of this utility model can be set in the same cutout window at the same time, or they can be set in different cutout windows respectively. The time-delay fluorescent pattern layer and the color-printed pattern layer can also occupy multiple cutout windows respectively.

[0010] Furthermore, the tape of this utility model has multiple repeating pattern units along its length, and each unit has start and end indicator lines at its start and end positions.

[0011] When two adjacent units are close together and difficult to distinguish, setting indicator lines helps to differentiate the units. When two adjacent units are far apart or easy to distinguish, indicator lines may not be set.

[0012] Within each unit of this invention, multiple fluorescent pattern layers are designed with pattern encryption based on different fluorescence disappearance times. By controlling the combination and arrangement of different fluorescence disappearance inks, pattern information with specific fluorescence effects can be designed. The fluorescent patterns can be text, numbers, scenery, people, company logos, etc., or can be the superposition of multiple information patterns.

[0013] The delayed fluorescent pattern layer of this invention can continue to emit light for a period of time after the excitation source is stopped, which increases the complexity and unreplicability of the anti-counterfeiting tape pattern.

[0014] The principle of this utility model is as follows:

[0015] The time-delayed fluorescence pattern within each unit cannot be observed under natural light, but it appears under ultraviolet light excitation. When the ultraviolet light is turned off, each time-delayed fluorescence pattern slowly disappears, and the disappearance time varies from part to part, thus forming a time-delayed fluorescence disappearance code. Due to its time-related physical characteristics, it increases the difficulty of replication.

[0016] Furthermore, in this invention, the tape has two identical patterned units spaced apart along its length. The number and position of the delayed fluorescent pattern layer in the first unit correspond to the number and position of the delayed fluorescent pattern layer in the second unit. The order in which the fluorescence disappears is different for the delayed fluorescent pattern layers in the two units.

[0017] Although the delayed fluorescence pattern layers of two adjacent units are in the same position, the order in which the fluorescence disappears is different, which increases the difficulty of replication.

[0018] Furthermore, the reflective layer of this utility model is any one of the following: aluminum layer, copper layer, zinc sulfide layer, silicon dioxide layer, aluminum oxide layer, and titanium dioxide layer.

[0019] The reflective layer is mainly used to protect the laser holographic pattern. At the same time, the high brightness of the reflective layer can reflect the color-printed pattern and the laser pattern, enhancing the brightness and iridescent effect of the pattern.

[0020] Furthermore, the color-printed pattern layer of this utility model includes a QR code or an anti-counterfeiting telephone number.

[0021] Scanning the QR code will display a page containing text or animation introducing the fluorescence time delay. The authenticity can be verified by checking whether the description in the QR code matches the actual content.

[0022] By dialing the anti-counterfeiting hotline, you can hear an audio message explaining the fluorescence delay. You can verify the authenticity of the product by confirming that the audio message matches the actual product.

[0023] This invention has the advantages of reasonable structure and good anti-counterfeiting performance. It applies laser anti-counterfeiting technology and delayed fluorescence anti-counterfeiting technology to tape, thereby improving its anti-counterfeiting performance. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0025] Figure 2 This is a schematic diagram of the layer structure of one of the units of this utility model.

[0026] As shown in the figure: 1. Tape body; 2. Start indicator line; 3. Delayed fluorescent pattern layer; 4. End indicator line; 5. Tape substrate; 6. Release silicone oil layer; 7. Color printed pattern layer; 8. Laser information layer; 9. Reflective layer; 10. Adhesive layer; 11. QR code. Detailed Implementation

[0027] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention. It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning understood by those skilled in the art to which this invention pertains. Example 1

[0028] like Figure 1 As shown: The tape body 1 has multiple repeating pattern units along its length. Each unit has a start indicator line 2 and an end indicator line 4 at its start and end positions. Each unit contains three delayed fluorescent pattern layers 3 and a QR code 11. In each unit, the fluorescence disappearance time of the three delayed fluorescent pattern layers 3 is in the same order.

[0029] like Figure 2The diagram shows the layer structure of the tape body. The front side of the tape substrate 5 has, from bottom to top, a time-delayed fluorescent pattern layer 3, a color-printed pattern layer 7, a laser information layer 8, a reflective layer 9, and an adhesive layer 10. The back side of the tape substrate 5 has a release silicone oil layer 6. The time-delayed fluorescent pattern layer 3, the color-printed pattern layer 7, and the laser information layer 8 are printed in alignment. Specifically, the laser information layer has a cutout window. The reflective layer 9 is washed away by an aluminum washing process. The positions of the time-delayed fluorescent pattern layer 3 and the color-printed pattern layer 7 correspond to the cutout window. The QR code 11 is part of the color-printed pattern layer 7.

[0030] The tape manufacturing process in this embodiment is as follows:

[0031] 1) Fluorescent pattern design: Based on different fluorescence disappearance times, the pattern encryption design is carried out. By controlling the combination and arrangement of different fluorescence disappearance inks, pattern information with specific fluorescence effects is designed. Fluorescent patterns can be text, numbers, scenery, people, company logos, etc., or they can be the superposition of multiple information patterns.

[0032] 2) According to the pattern design scheme, the delayed fluorescent pattern layer 3 is printed on the upper surface of the tape substrate 5 in a flexographic printing manner. The printing is carried out by printing with fluorescent inks containing different fluorescence disappearance times in a flexographic printing manner to form an invisible fluorescent code pattern. The fluorescent ink is selected as a flexographic printing ink doped with nitrogen and fluorine copolymer fluorescent carbon quantum dot material.

[0033] 3) Color printing pattern is formed on the time-delayed fluorescent pattern layer to form a color printing pattern layer 7. The pattern can be a company logo, product introduction, product picture, instructions for use, etc. The pattern includes a start indicator line 2, an end indicator line 4, and a QR code 11.

[0034] 4) Apply a laser coating to the color-printed pattern layer 7, with a dry coating weight of 1.0-1.5 g / m². 2 The drying time is 5-10 seconds, and the drying temperature is 80-130℃.

[0035] 5) A laser information layer 8 is formed by imprinting a laser holographic pattern onto the laser coating. The imprinting temperature is 160-180℃ and the vehicle speed is 40-60m / min.

[0036] 6) Vacuum evaporation of reflective layer 9, which is made of metallic aluminum. Through an aluminum washing process, a perforated window is formed on reflective layer 9.

[0037] 7) A release silicone oil layer is coated on the back of the tape base film 5 to reduce the unwinding resistance of the tape roll and prevent damage to the layer structure of the tape base film. The release layer uses PV1738 water-based high-gloss non-silicone release agent from Shaanxi Dongfang Aerospace Technology Co., Ltd., with a dry coating weight of 0.3-0.5 g / m. 2The drying time is 5-10 seconds, and the drying temperature is 70-90℃.

[0038] 8) Apply an adhesive layer to form a delayed fluorescent laser anti-counterfeiting tape. The adhesive thickness is 45-55um, the dry thickness is 20-30um, the drying time is 10-15s, and the drying temperature is 80-110℃. The adhesive used is PS3867 tape adhesive from Yiyuan Adhesive Factory.

[0039] In this embodiment, scan QR code 11 and follow the instructions on the page to irradiate one of the units on the tape body with an ultraviolet light device. Under ultraviolet light excitation, the pattern of the delayed fluorescent pattern layer 3 will appear. When the ultraviolet light is turned off, the patterns of each delayed fluorescent pattern layer 3 will slowly disappear. The disappearance time of each part is different. The authenticity can be verified by verifying whether the description in the QR code is consistent with the actual situation. Example 2

[0040] like Figure 1 The fluorescence disappearance times of the three delayed fluorescent pattern layers in adjacent units are different. Everything else is the same as in Example 1.

[0041] In this embodiment, although the delayed fluorescence pattern layers 3 of two adjacent units are in the same position and number, the order of fluorescence disappearance time is different, which increases the difficulty of replication.

[0042] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A time-delayed fluorescent laser anti-counterfeiting tape, characterized in that... The front side of the tape substrate is provided with a time-delayed fluorescent pattern layer, a color-printed pattern layer, a laser information layer, a reflective layer, and an adhesive layer in sequence from bottom to top. A release silicone oil layer is provided on the back side of the tape substrate. There are multiple time-delayed fluorescent pattern layers, and the fluorescence disappearance time of each time-delayed fluorescent pattern layer is different. Several cutout windows are provided on the reflective layer. The time-delayed fluorescent pattern layer and the color-printed pattern layer are aligned or overprinted at the cutout windows.

2. The time-delayed fluorescent laser anti-counterfeiting tape according to claim 1, characterized in that... The tape has multiple repeating pattern units along its length. Each unit has an indicator line at its start and end positions, and the indicator line is part of the color-printed pattern layer.

3. The time-delayed fluorescent laser anti-counterfeiting tape according to claim 2, characterized in that... Along the length of the tape, two identical patterned units are distributed at intervals. The number and position of the delayed fluorescent pattern layer in the first unit correspond to the number and position of the delayed fluorescent pattern layer in the second unit. The order of fluorescence disappearance time is different for the delayed fluorescent pattern layers in the two units.

4. The time-delayed fluorescent laser anti-counterfeiting tape according to claim 1, characterized in that... The reflective layer can be any one of the following: aluminum layer, copper layer, zinc sulfide layer, silicon dioxide layer, aluminum oxide layer, or titanium dioxide layer.

5. The time-delayed fluorescent laser anti-counterfeiting tape according to claim 1, characterized in that... The printed pattern layer contains a QR code or anti-counterfeiting phone number.

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