Multi-layer label structure and label web

Abstract

The utility model provides a kind of multilayer label structure and label tape.The multilayer label structure includes release paper, photocuring paste layer, structure layer and information layer.The photocuring paste layer covers one side of release paper, and is bonded with release paper.The structure layer is set in the side of photocuring paste layer far from release paper, and structure layer covers photocuring paste layer completely.Information layer is located in the side of structure layer towards photocuring paste layer and / or far from photocuring paste layer.The structure layer includes light-transmitting structure.When information layer is located in the side of structure layer towards photocuring paste layer, the area of information layer is less than the area of structure layer.When information layer is located in the side of structure layer far from photocuring paste layer, the area of information layer is less than or equal to the area of structure layer.The embodiment of the utility model is conducive to improving the food safety of multilayer label structure.

Description

Technical Field

[0001] This utility model relates to the field of food labeling technology, and in particular to a multi-layer label structure and label tape. Background Technology

[0002] Food labels are labels affixed directly to the surface of food or food containers. Because food labels come into direct or close contact with food, they require a high level of food safety compliance. Existing food labels often fail to meet these requirements; the adhesives and printing inks on food labels may contaminate the food, posing a safety risk.

[0003] The content of the background section is merely the technology known to the inventor and does not necessarily represent the prior art in this field. Utility Model Content

[0004] To address one or more deficiencies in the prior art, this utility model provides a multi-layer label structure, comprising: Release paper; A light-cured adhesive layer covers one side of the release paper and is bonded to the release paper; A structural layer, wherein the structural layer is disposed on the side of the photocurable adhesive layer away from the release paper, and the structural layer completely covers the photocurable adhesive layer; and An information layer, wherein the information layer is located in the structural layer on the side facing the photocurable adhesive layer and / or away from the photocurable adhesive layer; Wherein, the structural layer includes a light-transmitting structure; when the information layer is located on the side of the structural layer facing the photocurable adhesive layer, the area of ​​the information layer is smaller than the area of ​​the structural layer; when the information layer is located on the side of the structural layer away from the photocurable adhesive layer, the area of ​​the information layer is less than or equal to the area of ​​the structural layer.

[0005] According to one aspect of the present invention, the multi-layer label structure further includes: When the information layer is located on the side of the structural layer facing the photocurable adhesive layer, the cover layer is located on the side of the structural layer away from the information layer, and the cover layer completely covers the structural layer; when the information layer is located on the side of the structural layer away from the photocurable adhesive layer, the cover layer is located on the side of the information layer away from the structural layer, and the cover layer completely covers both the structural layer and the information layer.

[0006] According to one aspect of the present invention, the side of the structural layer that is in contact with the cover layer has a micro-rough structure.

[0007] According to one aspect of the present invention, the structural layer includes: A light-transmitting layer, wherein the light-transmitting layer has a uniform thickness and is a light-transmitting structure; A modified layer is located between the light-transmitting layer and the information layer.

[0008] According to one aspect of the present invention, the modified layer has a light-transmitting structure, and the modified layer includes nano-silver powder.

[0009] According to one aspect of the present invention, the information layer is located on the side of the structural layer away from the photocurable adhesive layer; the multi-layer label structure further includes: An isolation layer, wherein the information layer is located between the isolation layer and the structural layer, and is bonded to the modified layer; The area of ​​the information layer is smaller than the area of ​​the structure layer and the isolation layer, and the isolation layer completely covers the information layer.

[0010] According to one aspect of the present invention, the multi-layer label structure further includes: A second structural layer is disposed on the side of the isolation layer away from the structural layer; The second information layer is located in the second structural layer on the side facing the isolation layer and / or away from the isolation layer; The second cover layer is attached to the side of the second structural layer away from the isolation layer and completely covers the second information layer.

[0011] According to one aspect of the present invention, the second structural layer and the second covering layer include a light-transmitting structure.

[0012] According to one aspect of the present invention, the release paper includes a silicone oil film layer facing the photocurable adhesive layer and bonded to the photocurable adhesive layer.

[0013] According to one aspect of the present invention, the present invention also includes a label tape comprising a plurality of multi-layer label structures as described above, wherein the plurality of multi-layer label structures are coplanar and arranged in a one-dimensional array or a two-dimensional array, and adjacent multi-layer label structures have a vulnerable portion between them.

[0014] Compared with existing technologies, embodiments of this invention provide a multi-layer label structure. A photocurable adhesive layer covers the release paper and can contact food; preferably, the chloroform extract meets the limits for food contact. An information layer is located between the photocurable adhesive layer and the structural layer, and is sealed by both layers. The photocurable adhesive layer and the structural layer reduce the migration of substances from the information layer to the food surface. Alternatively, the information layer is located on the side of the structural layer away from the photocurable adhesive layer; preferably, the information layer uses a low-migration ink to further reduce substance migration to the food surface. Embodiments of this invention improve the food safety of multi-layer label structures.

[0015] Embodiments of this utility model also include a label tape, comprising the multi-layer label structure as described above. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1A A schematic diagram of an exemplary multi-layer label structure consistent with some embodiments of the present invention is shown; Figure 1B A schematic diagram of an exemplary multi-layer label structure consistent with some other embodiments of the present invention is shown; Figure 2A A schematic diagram of an exemplary multi-layer label structure including a cover layer, consistent with some embodiments of the present invention, is shown; Figure 2B A schematic diagram of an exemplary multi-layer label structure including a cover layer, consistent with some other embodiments of the present invention, is shown; Figure 3 A schematic diagram of an exemplary multilayer label structure including a modified layer and a light-transmitting layer, consistent with some embodiments of the present invention, is shown; Figure 4 A schematic diagram of an exemplary multi-layer tag structure including a second information layer, consistent with some embodiments of the present invention, is shown; Figure 5 A schematic diagram of an exemplary label tape consistent with some embodiments of the present invention is shown. Detailed Implementation

[0017] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0018] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for mutual communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0022] The embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0023] Figure 1A A schematic diagram of an exemplary multi-layer label structure 100 consistent with some embodiments of the present invention is shown. See also Figure 1A The multi-layer label structure 100 includes release paper 110, a light-curing adhesive layer 120, a structural layer 130, and an information layer 140.

[0024] See Figure 1A A UV-curable adhesive layer 120 covers one side of the release paper 110 and is adhered to it. The UV-curable adhesive layer 120 may include a UV adhesive, cured by ultraviolet light; preferably, a chloroform extract meets the limits for food contact. In use, the multi-layer label structure 100 separates the release paper 110 and the UV-curable adhesive layer 120, and adheres the UV-curable adhesive layer 120 to the surface of food or food packaging. The release paper 110 includes, for example, coated release paper, glassine release paper, dual-silicone release paper, single-silicone release paper, etc. The side of the release paper 110 facing the UV-curable adhesive layer 120 has an easily separable coating. In some embodiments, the release paper 110 includes a silicone oil film layer facing the UV-curable adhesive layer 120 and adhered to it.

[0025] Adhesive layers can be categorized into water-soluble, oil-soluble (organic solvent) adhesive layers, and hot-melt adhesive layers based on their solvent (or melting method). Water-soluble adhesive layers exhibit rapidly declining adhesion performance or even failure under high and low temperature environments. Oil-soluble and hot-melt adhesive layers struggle to meet food safety requirements, as harmful substances may migrate into food, leading to food safety issues. The photocurable adhesive layer in this embodiment demonstrates strong adaptability to high and low temperature environments, maintaining its functionality even at -20°C, and is solvent-free, making it food-friendly.

[0026] The structural layer 130 is disposed on the side of the UV-cured adhesive layer 120 away from the release paper 110, and the structural layer 130 completely covers the UV-cured adhesive layer 120. In some embodiments, the structural layer 130 may include one or more materials selected from paper, PP (Polypropylene), PE (Polyethylene), and PET (Polyester) as a face material co-extruded or laminated with a permeable material.

[0027] In some embodiments, structural layer 130 includes a light-transmitting structure. The light-transmitting structure facilitates the curing of the photocurable adhesive layer 120, reduces the fluidity of the photocurable adhesive layer 120, and enables the photocurable adhesive layer 120 to meet the application requirements for adhesion.

[0028] In some embodiments, the structural layer 130 may be equal to or larger than the size of the UV-curable adhesive layer 120, and completely cover the UV-curable adhesive layer 120. During the use of the multi-layer label structure 100, the release paper 110 is separated, and the side of the UV-curable adhesive layer 120 away from the structural layer 130 is adhered to the surface of the food or food packaging. The structural layer 130 can protect and isolate the UV-curable adhesive layer 120, preventing other substances from adhering to the UV-curable adhesive layer 120 and affecting food safety.

[0029] See Figure 1A The information layer 140 is located in the structural layer 130 on the side facing the photocurable adhesive layer 120. The information layer 140 can be printed on the structural layer 130; for example, the structural layer 130 may comprise paper. The information layer 140 is formed on one surface of the paper using printing equipment. After the information layer 140 is formed, the structural layer 130 and the photocurable adhesive layer 120 are assembled. In some embodiments, the information layer 140 includes food information, production information, trademarks, and other information.

[0030] See Figure 1A In some embodiments, the area of ​​the information layer 140 is smaller than the area of ​​the structural layer 130. The structural layer 130 and the photocurable adhesive layer 120 together surround the information layer 140. During the use of the multi-layer label structure 100, the photocurable adhesive layer 120 and the structural layer 130 enclose the information layer 140, which helps to reduce the migration of substances from the information layer 140 into food and meets food safety requirements.

[0031] In some embodiments, the information layer 140 is located close to the middle of the structural layer 130, and the area of ​​the information layer 140 is no more than half the area of ​​the structural layer 130. This is beneficial to further improve the sealing effect of the photocurable adhesive layer 120 and the structural layer 130 on the information layer 140, and reduce the impact of the information layer 140 on food safety.

[0032] Figure 1B A schematic diagram of an exemplary multi-layer label structure 100 consistent with some embodiments of the present invention is shown. See also Figure 1B The multi-layer label structure 100 includes release paper 110, a light-curing adhesive layer 120, a structural layer 130, and an information layer 140.

[0033] See Figure 1B In this embodiment, the structure and connection relationship between the release paper 110 and the photocurable adhesive layer 120 are as follows: Figure 1A The structures and connections of the release paper 110 and the UV-cured adhesive layer 120 in the illustrated embodiment are largely the same and will not be described again. The structural layer 130 is disposed on the side of the UV-cured adhesive layer 120 away from the release paper 110, and the structural layer 130 completely covers the UV-cured adhesive layer 120. The material and structure of the structural layer 130 are similar to... Figure 1A The structural layer 130 in the illustrated embodiment is roughly the same and will not be described again.

[0034] In this embodiment, the information layer 140 is located on the side of the structural layer 130 away from the photocurable adhesive layer 120. In some embodiments, the information layer 140 includes information such as food information, production information, and trademarks. The information layer 140 can be printed on the structural layer 130; for example, the structural layer 130 may consist of paper, and the information layer 140 can be formed on one side of the paper using a printing device. In some embodiments, the information layer 140 can be printed on one side of the structural layer 130, and after printing, the structural layer 130 and the photocurable adhesive layer 120 can be combined.

[0035] In some embodiments, after the structural layer 130 and the photocurable adhesive layer 120 are bonded together, the structural layer 130 can be printed on the side of the structural layer 130 away from the photocurable adhesive layer 120, covering the entire release paper 110, the photocurable adhesive layer 120, and the structural layer 130. This simplifies the preparation process of the multilayer label structure 100 and reduces its difficulty. In some embodiments, the photocurable adhesive layer 120 undergoes preliminary curing, reducing its fluidity and facilitating subsequent processing. Preferably, the information layer 140 is formed using UV ink printing, and the structural layer 130 has a light-transmitting structure, which helps improve the uniformity of the secondary curing of the photocurable adhesive layer 120 and reduces the risk of the multilayer label structure 100 detaching from the supporting surface.

[0036] See Figure 1BIn some embodiments, the area of ​​the information layer 140 is less than or equal to the area of ​​the structural layer 130. The information layer 140 and the food are jointly isolated by the structural layer 130 and the photocurable adhesive layer 120, reducing the risk of substances in the information layer 140 migrating into the food and thus improving food safety. Furthermore, since the area of ​​the information layer 140 does not exceed the area covered by the structural layer 130, it prevents the information layer 140 from extending beyond the area of ​​the structural layer 130 and directly contacting the food surface.

[0037] In some embodiments, the information layer 140 is located close to the middle of the structural layer 130, and the area of ​​the information layer 140 is no more than half the area of ​​the structural layer 130. This is beneficial to further improve the isolation effect of the photocurable adhesive layer 120 and the structural layer 130 on the information layer 140, and reduce the impact of the information layer 140 on food safety.

[0038] Figure 2A and Figure 2B A schematic diagram of an exemplary multi-layer label structure 100 consistent with different embodiments of the present invention is shown.

[0039] In some embodiments, the multi-layer label structure 100 further includes an overlay layer 150. See also Figure 2A The information layer 140 is located in the structural layer 130 on the side facing the photocurable adhesive layer 120. The cover layer 150 is located on the side of the structural layer 130 away from the information layer 140, and the cover layer 150 completely covers the structural layer 130. In some embodiments, the cover layer 150 can protect the structural layer 130; for example, the cover layer 150 includes a waterproof, dustproof, oil-resistant, or high-hardness material to achieve the corresponding function.

[0040] In some embodiments, the overlay layer 150 can enhance the visual presentation of the multi-layer label structure 100. For example, the overlay layer 150 can transmit or filter light of a specific wavelength, or have preset reflective or polarization characteristics, thereby achieving different visual presentation effects and improving the user experience of the multi-layer label structure 100.

[0041] In some embodiments, the cover layer 150 can be bonded and fixed to the structural layer 130 by means of lamination, coating, hot pressing, co-extrusion, etc. In some embodiments, the processing technology for bonding and fixing the cover layer 150 and the structural layer 130 does not generate additional harmful substances, such as by using food-grade adhesives or controlling the temperature of the hot pressing or co-extrusion process, which is beneficial to improving food safety.

[0042] Figure 2B A schematic diagram of a multi-layer label structure 100 according to some other embodiments of the present invention is shown. See also Figure 2BThe multi-layer label structure 100 includes a cover layer 150. An information layer 140 is located on the side of the structural layer 130 away from the photocurable adhesive layer 120. The cover layer 150 is located on the side of the information layer 140 away from the structural layer 130, and completely covers both the structural layer 130 and the information layer 140. The cover layer 150 can protect the information layer 140 and the structural layer 130. Alternatively, in some embodiments, the cover layer 150 can enhance the visual presentation of the multi-layer label structure 100, specifically... Figure 2A The structure and function of the cover layer 150 shown are roughly the same, and will not be described in detail here.

[0043] In some embodiments, see Figure 2B The area of ​​the cover layer 150 is larger than that of the information layer 140. The cover layer 150 and the structural layer 130 together enclose the information layer 140, which helps reduce the migration of substances from the information layer 140 into food and improves food safety. In some embodiments, the information layer 140 is located close to the middle of the structural layer 130 and the cover layer 150, and the area of ​​the information layer 140 is no more than half the area of ​​the structural layer 130 and the cover layer 150. This helps to further improve the isolation effect of the cover layer 150 and the structural layer 130 on the information layer 140 and reduce the impact of the information layer 140 on food safety.

[0044] In some embodiments, the side of the structural layer 130 that is bonded to the cover layer 150 has a micro-roughened structure (not shown in the figure). Forming a micro-roughened structure on the bonding surface of the structural layer 130 and the cover layer 150 helps to improve the bonding strength between the structural layer 130 and the cover layer 150, thereby improving the stability of the multilayer label structure 100. In some embodiments, the surface of the structural layer 130 facing the cover layer 150 may be corona-treated to form a micro-roughened structure, improving the bonding strength with the cover layer 150 while ensuring the light transmittance of the structural layer 130.

[0045] In some embodiments, the structural layer 130 and the information layer 140 have a micro-rough structure. For example, the structural layer 130 can be corona treated before the information layer 140 is printed on it, which helps to improve the bonding strength between the structural layer 130 and the information layer 140 and reduce the risk of the information layer 140 falling off.

[0046] Figure 3 A schematic diagram of an exemplary multilayer label structure including a modified layer and a light-transmitting layer, consistent with some embodiments of this utility model, is shown. See also Figure 3 The structural layer 130 includes a light-transmitting layer 131 and a modified layer 132. The light-transmitting layer 131 is a light-transmitting structure with uniform thickness. The modified layer 132 is located between the light-transmitting layer 131 and the information layer 140.

[0047] Figure 3The information layer 140 shown is located on the side of the structural layer 130 away from the photocurable adhesive layer 120. The modified layer 132 is located on the side of the light-transmitting layer 131 away from the photocurable adhesive layer 120. In other embodiments, the information layer is located between the structural layer and the photocurable adhesive layer, and the modified layer is located on the side of the light-transmitting layer facing the photocurable adhesive layer.

[0048] The light-transmitting layer 131 can meet the curing requirements of the photocurable adhesive layer 120, and the light-transmitting layer 131 can have a certain stiffness or hardness to facilitate the normal use of the multi-layer label structure 100 and enable the multi-layer label structure 100 to have the structural strength required for use. For example, the light-transmitting layer 131 includes PE or PET film.

[0049] The modified layer 132 can improve the bonding strength between the information layer 140 and the modified layer 132. For example, the structural layer 130 can be modified to be hydrophobic / oil-based or hydrophilic / oil-based depending on the ink material of the printed information layer 140. In some embodiments, the modified layer 132 can be bonded and fixed to the light-transmitting layer 131. Alternatively, in some embodiments, the modified layer 132 can also be integrally formed with the light-transmitting layer 131, for example, by treating the side of the structural layer 130 facing the information layer 140.

[0050] In some embodiments, the modified layer 132 is a light-transmitting structure, meeting the curing requirements of the photocurable adhesive layer 120. In some embodiments, the modified layer 132 can also enhance the functionality of the multilayer label structure 100. In some embodiments, without affecting light transmittance, for example, maintaining the transmittance of ultraviolet light at 50%, the material of the modified layer 132 includes nano-silver powder, which is beneficial for improving food preservation, catalyzing the oxidation of ethylene, reducing the rate of food aging, and has antibacterial properties.

[0051] Figure 4 A schematic diagram of an exemplary multi-layered tag structure including a second information layer, consistent with some embodiments of this utility model, is shown. See also Figure 4 The information layer 140 is located in the structural layer 130 on the side away from the photocurable adhesive layer 120. The multilayer label structure 100 also includes a release layer 160. The information layer 140 is located between the release layer 160 and the structural layer 130, and the modification layer 132 (see [link to documentation]) Figure 3 Fits snugly.

[0052] In this embodiment, the area of ​​the information layer 140 is smaller than the areas of the structural layer 130 and the isolation layer 160, and the isolation layer 160 completely covers the information layer 140. The isolation layer 160, together with the structural layer 130, can protect the information layer 140, reducing the migration of substances from the information layer 140 into food, thus improving the food safety of the multi-layer label structure 100. Furthermore, the isolation layer 160 can isolate substances from the information layer 140 from upward (…). Figure 4The upward migration of the label structure 100 avoids affecting the second structural layer 170, the second information layer 180, and the second overlay layer 190 (described in subsequent embodiments), which helps to improve the clarity of the presentation effect of the multi-layer label structure 100.

[0053] See Figure 4 In some embodiments, the multi-layer label structure 100 further includes a second structural layer 170, a second information layer 180, and a second overlay layer 190. The second structural layer 170 is disposed on the side of the isolation layer 160 away from the structural layer 130. In some embodiments, the structure and material of the second structural layer 170 may be the same as or similar to the structure of the structural layer 130 in the aforementioned embodiments.

[0054] The second information layer 180 is located on the side of the second structural layer 170 away from the isolation layer 160. For example, the second information layer 180 can be printed on the surface of the second structural layer 170. In some embodiments, the structure of the second information layer 180 is the same as or similar to that of the information layer 140 in the foregoing embodiments, and will not be described again. In some embodiments, the second information layer is located on the side of the second structural layer facing the isolation layer.

[0055] The second cover layer 190 is attached to the side of the second structural layer 170 away from the isolation layer 160 and completely covers the second information layer 180. The second cover layer 190 can protect the second structural layer 170 and the second information layer 180. Furthermore, in some embodiments, the second cover layer 190 can improve the visual presentation of the multi-layer label structure 100. For example, the second cover layer 190 has preset reflective or polarization characteristics. The structure of the second cover layer 190 can be the same as or similar to the structure of the cover layer in the foregoing embodiments.

[0056] In some embodiments, the isolation layer 160, the second structural layer 170, and the second cover layer 190 all include light-transmitting structures to meet the curing conditions of the photocurable adhesive layer 120 and reduce the impact of increasing the thickness of the multilayer label structure 100 on stability and functionality. Specifically, in some embodiments, the photocurable adhesive layer 120 undergoes initial curing to reduce its fluidity before subsequent processing, such as printing to form the information layer 140. Alternatively, in some embodiments, the uncured UV adhesive is coated to prevent adhesion or contamination during subsequent processing.

[0057] Figure 5 A schematic diagram of an exemplary label tape consistent with some embodiments of the present invention is shown. See also Figure 5The embodiments of this utility model also include a label tape 10, which includes a plurality of multi-layer label structures 100 as described in the foregoing embodiments. The plurality of label structures 100 are coplanar and arranged in a two-dimensional array, and adjacent multi-layer label structures 100 have a vulnerable portion 20, which allows the multi-layer label structures 100 to be separated at the location of the vulnerable portion 20 during use. In some embodiments, the vulnerable portion 20 may include intermittent die-cut lines.

[0058] In some embodiments, the multiple multi-layered label structures in the label tape may also be arranged in a one-dimensional array. In some embodiments, the label tape may be bent or folded, for example, the label tape may be packaged in rolls and transported.

[0059] Finally, it should be noted that the above descriptions are merely embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A multi-layer label structure, characterized in that, include: Release paper; A light-cured adhesive layer covers one side of the release paper and is bonded to the release paper; A structural layer is disposed on the side of the photocurable adhesive layer away from the release paper, and the structural layer completely covers the photocurable adhesive layer; and An information layer, wherein the information layer is located in the structural layer on the side facing the photocurable adhesive layer and / or away from the photocurable adhesive layer; Wherein, the structural layer includes a light-transmitting structure; when the information layer is located on the side of the structural layer facing the photocurable adhesive layer, the area of ​​the information layer is smaller than the area of ​​the structural layer; When the information layer is located on the side of the structural layer away from the photocurable adhesive layer, the area of ​​the information layer is less than or equal to the area of ​​the structural layer.

2. The multi-layer label structure according to claim 1, characterized in that, The multi-layered label structure also includes: When the information layer is located on the side of the structural layer facing the photocurable adhesive layer, the cover layer is located on the side of the structural layer away from the information layer, and the cover layer completely covers the structural layer; when the information layer is located on the side of the structural layer away from the photocurable adhesive layer, the cover layer is located on the side of the information layer away from the structural layer, and the cover layer completely covers both the structural layer and the information layer.

3. The multi-layer label structure according to claim 2, characterized in that, The side of the structural layer that is in contact with the cover layer has a micro-rough structure.

4. The multi-layer label structure according to claim 1, characterized in that, The structural layer includes: A light-transmitting layer, wherein the light-transmitting layer has a uniform thickness and is a light-transmitting structure; A modified layer is located between the light-transmitting layer and the information layer.

5. The multi-layer label structure according to claim 4, characterized in that, The modified layer has a light-transmitting structure and includes nano-silver powder.

6. The multi-layer label structure according to claim 4, characterized in that, The information layer is located on the side of the structural layer away from the photocurable adhesive layer; the multi-layer label structure further includes: An isolation layer, wherein the information layer is located between the isolation layer and the structural layer, and is bonded to the modified layer; The area of ​​the information layer is smaller than the area of ​​the structure layer and the isolation layer, and the isolation layer completely covers the information layer.

7. The multi-layer label structure according to claim 6, characterized in that, The multi-layered label structure also includes: A second structural layer is disposed on the side of the isolation layer away from the structural layer; The second information layer is located in the second structural layer on the side facing the isolation layer and / or away from the isolation layer; A second cover layer is attached to the side of the second structural layer away from the isolation layer and completely covers the second information layer.

8. The multi-layer label structure according to claim 7, characterized in that, The second structural layer and the second cover layer include a light-transmitting structure.

9. The multi-layer label structure according to any one of claims 1-6, characterized in that, The release paper includes a silicone oil film layer, which faces the photocurable adhesive layer and is bonded to it.

10. A label tape, characterized in that, It includes multiple multi-layer label structures as described in any one of claims 1-9, wherein the multiple multi-layer label structures are coplanar and arranged in a one-dimensional array or a two-dimensional array, and adjacent multi-layer label structures have a vulnerable portion.

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