Packaging structure for absorption products

Abstract

The utility model discloses a packaging structure for absorption products, and relates to the technical field of packaging appliances. According to one specific embodiment, the packaging structure for the absorption products comprises a bag body and a label, a product taking and placing opening is formed in the bag body, the label comprises a covering part, an adhesive part and an opening part, the covering part blocks the product taking and placing opening, the adhesive part comprises a first adhesive area and a second adhesive area, the second adhesive area is located on the side close to the opening part, and the opening part is located on the side close to the opening part. And the adhesive strength of the second adhesive area is lower than that of the first adhesive area. According to the packaging structure, the area occupied by an unnecessary strong glue area is reduced to the maximum extent through treatment of the viscosity of glue at different parts, so that the risk that when the content is taken out, the content rubs the glue part of the label to be damaged is reduced, and meanwhile the sealing performance of subsequent repeated opening and closing of the label is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of packaging equipment technology, and in particular to a packaging structure for absorbent products. Background Technology

[0002] Currently, the removal and repeated opening of absorbent products are mainly achieved through solutions such as zippers, drawstrings, and reusable self-adhesive labels. However, the adhesive layer of the labels in existing solutions is treated in the same way. When the contents are removed, the adhesive part of the self-adhesive label is prone to rubbing against the contents, which can lead to damage to the contents and also affect the airtightness of the label when it is repeatedly opened and closed. Utility Model Content

[0003] In view of this, the present invention provides a packaging structure for absorbent products. By treating the adhesive strength of different parts, the area occupied by unnecessary strong adhesive areas is minimized, thereby reducing the risk of the contents rubbing against the adhesive part of the label and causing damage when they are taken out. At the same time, it also ensures the airtightness of the label when it is repeatedly opened and closed.

[0004] To achieve the above objectives, this utility model provides a packaging structure for absorbent products, comprising: a bag body and a label, wherein the bag body has a product dispensing opening, the label includes a covering part, an adhesive part and an opening part, the covering part seals the product dispensing opening, the adhesive part includes a first adhesive area and a second adhesive area, the second adhesive area is located on the side near the opening part, and the adhesive strength of the second adhesive area is lower than the adhesive strength of the first adhesive area.

[0005] Optionally, the second adhesive region includes: at least one first weakened region and / or at least one second weakened region, wherein the first weakened region is located at the left and right edges of the front end of the second adhesive region near the opening, and the second weakened region is located inside the first weakened region.

[0006] Optionally, the outer contour of the first weakened region is the same as the outer contour of the product pick-up and drop-off port.

[0007] Optionally, the adhesive strength of the second weakened region is 0% to 75% of the adhesive strength of the first weakened region.

[0008] Optionally, the multiple second weakened regions are discontinuously distributed, and the coating area of ​​the second weakened region located at the center is smaller than the coating area of ​​the second weakened regions located on both sides of the center.

[0009] Optionally, the shape of the second adhesive area is one or more combinations of the following: rhombus, rectangle, circle, and triangle.

[0010] Optionally, when the second adhesive area is rhomboid, the long axis of the second adhesive area is aligned with the opening direction of the product loading / unloading port.

[0011] Optionally, the distance between the second adhesive area and the outer edge of the label ranges from 2 to 3 mm.

[0012] Optionally, the coating width at the rear end of the adhesive part away from the opening portion is 5 to 9 mm, the coating width at the left or right end of the adhesive part is 5 to 8 mm, and the coating width at the front end of the adhesive part near the opening portion is 6 to 9 mm.

[0013] Optionally, the first adhesive area is coated with a permanent pressure-sensitive adhesive or a hot melt adhesive, and the second adhesive area is coated with a re-adhesive pressure-sensitive adhesive.

[0014] One embodiment of the above-described utility model has the following advantages or beneficial effects: The packaging structure includes a bag and a label. The bag has a product opening for taking out and putting in the product. The label includes a covering part, an adhesive part, and an opening part. The covering part seals the product opening for taking out and putting in the product. The adhesive part includes a first adhesive area and a second adhesive area. The second adhesive area is located on the side closer to the opening part, and the adhesive strength of the second adhesive area is lower than that of the first adhesive area. This packaging structure, by treating the adhesive strength of different parts, minimizes the area occupied by unnecessary strong adhesive areas, thereby reducing the risk of the contents rubbing against the adhesive part of the label and causing damage when they are taken out. It also ensures the airtightness of the label during subsequent repeated opening and closing.

[0015] The further effects of the aforementioned unconventional alternative methods will be explained below in conjunction with specific implementation methods. Attached Figure Description

[0016] The accompanying drawings are provided to better understand this utility model and do not constitute an undue limitation thereof. Wherein:

[0017] Figure 1 This is a schematic diagram of the closed state of the packaging structure according to an embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the packaging structure in the open state according to an embodiment of the present utility model;

[0019] Figure 3 This is a schematic diagram of the label structure according to an embodiment of the present utility model;

[0020] Figure 4 This is a schematic diagram of a first structure of the adhesive part of the label in a packaging structure according to an embodiment of the present utility model;

[0021] Figure 5 This is a schematic diagram of a second structure of the adhesive portion of the label in the packaging structure according to an embodiment of the present utility model;

[0022] Figure 6 This is a schematic diagram of a third structure of the adhesive part of the label in the packaging structure according to an embodiment of the present utility model;

[0023] Figure 7 This is a schematic diagram of a fourth structure of the adhesive part of the label in the packaging structure according to an embodiment of the present utility model.

[0024] Reference numerals: 1-bag body; 2-label; 21-covering part; 22-adhesive part; 221-first adhesive area; 222-second adhesive area; 2221-first weakened area; 2222-second weakened area; 23-opening part; 3-product loading and unloading port. Detailed Implementation

[0025] The following description, in conjunction with the accompanying drawings, illustrates exemplary embodiments of the present invention, including various details to aid understanding. These embodiments should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present invention. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.

[0026] It should be noted that in the description of this utility model, the terms "left", "right", "up", "down", etc., indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0027] Furthermore, it should be noted that, in the description of this utility model, 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of 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.

[0028] Currently, the removal and repeated opening of absorbent products are mainly achieved through solutions such as zippers, drawstrings, and reusable self-adhesive labels. However, the adhesive layer of the labels in existing solutions is treated in the same way. When the contents are removed, the adhesive part of the self-adhesive label is prone to rubbing against the contents, which can lead to damage to the contents and also affect the airtightness of the label when it is repeatedly opened and closed.

[0029] In view of this, such as Figures 1 to 4 As shown, this embodiment of the present invention provides a packaging structure for absorbent products, including: a bag body 1 and a label 2. The bag body 1 has a product opening 3. The label 2 includes a covering portion 21, an adhesive portion 22, and an opening portion 23. The covering portion 21 seals the product opening 3. The adhesive portion 22 includes a first adhesive area 221 and a second adhesive area 222. The second adhesive area 222 is located on the side closer to the opening portion 23, and the adhesive strength of the second adhesive area 222 is lower than that of the first adhesive area 221. This embodiment achieves a good balance between convenient opening and reliable sealing.

[0030] Specifically, the packaging structure includes a bag body 1 and a label 2. The bag body 1 has a product opening 3, and the label 2 is used to cover and seal the product opening 3 to ensure the airtightness and hygiene of the product inside the bag body 1. The label 2 includes a covering part 21, an adhesive part 22, and an opening part 23. The covering part 21 is located at the corresponding position of the product opening 3, serving as a barrier and protection. The opening part 23 is located at one end of the label 2, allowing the user to manually peel off the label 2 to open the product opening 3. The adhesive part 22 is used to firmly adhere the label 2 to the surface of the bag body 1.

[0031] To improve the smoothness of opening and control of the opening path, the adhesive portion 22 is further subdivided into a first adhesive region 221 and a second adhesive region 222. The first adhesive region 221 is located on the side away from the opening portion 23 and has a higher adhesive strength, ensuring that the product loading / unloading port 3 is firmly sealed and preventing the label 2 from being accidentally opened during storage or transportation. The second adhesive region 222 is located on the side closer to the opening portion 23, and its adhesive strength is significantly lower than that of the first adhesive region 221. This makes it easier for the user to peel off the label 2 from the opening portion 23, and the opening path is more controllable, effectively avoiding the problem of the label 2 tearing or product deformation due to excessive adhesive force. The second adhesive region 222 can be designed with a weakened structure with different adhesive properties. For example, by locally setting several weakened adhesive tapes, weakened graphics, laser perforation, or zoned adhesive application within the second adhesive area 222, the adhesive force distribution at different locations can be precisely controlled. In particular, the front area near the opening portion 23 is easier to peel off, while the middle and rear areas maintain relatively strong adhesion, thus achieving gradual control of the opening process. This structural design facilitates user operation while maintaining the overall packaging integrity, avoiding the risk of contents exposure or label 2 detachment due to improper opening. This packaging structure, by setting areas with different adhesive strengths within the adhesive portion 22, especially the reduced adhesive strength of the second adhesive area 222 compared to the first adhesive area 221, makes label 2 easier for the user to peel off. The overall design is user-friendly and practical, improving the user experience while ensuring the airtightness and packaging stability of the absorbent material.

[0032] like Figures 5 to 7 As shown, the second adhesive region 222 includes at least one first weakened region 2221 and / or at least one second weakened region 2222. The first weakened region 2221 is located at the left and right edges of the front end of the second adhesive region 222 near the opening portion 23, and the second weakened region 2222 is located inside the first weakened region 2221. In this embodiment, the first weakened region 2221 is arranged in the second adhesive region 222 near the left and right edges of the front end of the opening portion 23, forming a weakening band of adhesive strength at the opening starting edge, effectively reducing the peeling force required for the initial opening. Since the opening action often starts from the edge of the label 2, if the adhesive force at the edge is too strong, it is very easy to cause the label 2 to tear or open unsmoothly. Setting the first weakened region 2221 can avoid the above problems and improve the reliability and user experience of the label 2. The second weakened region 2222 is further disposed in the inner region of the first weakened region 2221, that is, the part near the center of the adhesive path, further reducing the scraping force generated in this area during the removal of the contents. When opening and removing the absorbent product, the user's fingers often form a clamping structure, and the middle of label 2 can easily interfere with the contents or the hand. If the adhesive strength in the middle is too high, it will not only be difficult to open completely, but may also cause the contents to stick, be scratched, or cause the adhesive to fail entirely. By setting the second weakened area 2222 in the middle area and using intermittent adhesive application, low adhesion, or non-adhesive methods, a structural layout that gradually reduces the adhesive strength from the outside to the inside can be achieved, resulting in a large-small-large adhesive strength distribution, making the opening process more controllable and smooth. In another embodiment, the shape of the first weakened area 2221 or the second weakened area 2222 can be any shape such as rhombus, circle, or rectangle, and there can be multiple of them, which can be arranged in a pattern to form an intermittent distribution. For example, multiple rhombus-shaped weakened areas can be arranged sequentially along the opening direction, with the first weakened area 2221 in the central area having the smallest adhesive application area, and the area of ​​the second weakened area 2222 at the edge gradually increasing, thus visually and structurally reflecting the gradient change in adhesive strength. This design not only meets the requirements for easy opening, but also improves the tolerance of the processing technology. Even if there are minor deviations in the manufacturing process such as die-cutting, it can still ensure the reliable sealing of the key sealing parts and ensure packaging safety.

[0033] like Figure 2As shown, the outer contour of the first weakened area 2221 is the same as the outer contour of the product loading / unloading opening 3. The edge shape of the first weakened area 2221 is designed according to the shape of the product loading / unloading opening 3, so that the first weakened area 2221 visually and structurally matches the contour of the product loading / unloading opening 3. This design not only improves the aesthetics of the overall packaging structure but also facilitates precise control of the adhesive layout of the label 2, making the adhesive area more closely fit the actual shape of the bag opening and avoiding problems such as ineffective coating or uneven adhesive application. By designing the first weakened area 2221 to match the contour of the product loading / unloading opening 3, higher shape consistency can be achieved when the label 2 is applied, reducing the risk of edge lifting, delamination, or excess adhesive residue due to geometric mismatch. Simultaneously, this structure concentrates the opening force at the contour-aligned position, facilitating a clear peeling path for the user when opening the label 2, improving operational convenience and reusability. In another embodiment, the product loading / unloading opening 3 can be circular, elliptical, rectangular, or other irregular contours, and the edge contour of the first weakened area 2221 can be simultaneously set to the corresponding shape. For special application scenarios, such as packaging that needs to be opened more often, a variable strength adhesive layer can be laid within the consistent contour range, so that the opening part transitions from the edge to the center with a gradient adhesive force distribution.

[0034] like Figure 2 as well as Figures 5 to 7As shown, the adhesive strength of the second weakened region 2222 is 0% to 75% of the adhesive strength of the first weakened region 2221. In this embodiment, the second weakened region 2222 has a further weakened adhesive strength in the overall adhesive layout, forming a secondary adhesive layer opposite to the first weakened region 2221. This strength ratio setting allows the second weakened region 2222 to more effectively reduce resistance during the user's opening of the label 2 and removal of the absorbent product, reducing friction between the contents and the label 2, and preventing functional failures caused by damage to the surface of the contents or adhesion to the label 2. Specifically, the second weakened region 2222 can be coated with intermittent dot-like or sheet-like adhesive, or the adhesive application can be completely omitted to achieve 0% adhesive strength, i.e., a "no-adhesive area"; or a low-strength adhesive can be applied as needed to maintain its adhesive strength between one-quarter and three-quarters of that of the first weakened region 2221. For example, if the first weakened region 2221 uses 80% of the strength of a conventional pressure-sensitive adhesive, the second weakened region 2222 can be controlled between 0% and 60%, thus forming an adhesive region with a clear gradient in adhesive properties. This gradient design improves the smoothness of opening for the user and also enhances the repeatability and durability of the label 2. In another embodiment, the second weakened region 2222 can be designed as multiple independent regions according to the structure of the label 2, arranged longitudinally along the opening direction, and each second weakened region 2222 can vary in a certain proportion to achieve a gradual decrease in strength from the edge inwards. In addition, to adapt to different label 2 substrates and adhesive types, the setting range of this strength range can be optimized by combining the material properties of hot melt adhesives, peelable adhesives, etc.

[0035] like Figures 5 to 7As shown, the multiple second weakened regions 2222 are distributed intermittently, and the coating area of ​​the second weakened region 2222 located in the center is smaller than that of the second weakened regions 2222 located on both sides of the center. In this embodiment, by designing the second weakened regions 2222 as multiple discontinuous adhesive units, local adhesive strength control can be achieved, while reducing resistance during opening. The intermittent distribution allows the label 2 to gradually detach from the adhesive area when opened under force, improving the smoothness of opening and reducing the risk of tearing. The second weakened region 2222 located in the center is more likely to rub against the contents during the opening process, so its adhesive coating area is further reduced, which helps to reduce resistance and friction in the initial stage of opening and prevent damage or adhesion to the surface of the contents. In contrast, the second weakened regions 2222 located on both sides of the center have a slightly larger coating area, which can play a certain auxiliary fixing role, thereby balancing the overall sealing performance and opening convenience. The spacing, shape, number, and distribution position of each second weakened region 2222 can be flexibly adjusted according to the product type and the size of the label 2. For example, the second weakened area 2222 can use multiple dots, rhombuses, ellipses, or rectangles of different sizes for adhesive coating, arranged in a specific rhythm to form a "small to medium-large on both sides" distribution structure. It can also be combined with die-cutting lines to optimize the overall opening path. By finely controlling the adhesion area and distribution density of different areas, the functional adjustability of the packaging structure and the user experience can be further improved.

[0036] Optionally, such as Figures 4 to 7As shown, the shape of the second adhesive area 222 can be one or more combinations of the following: rhombus, rectangle, circle, and triangle. When the second adhesive area 222 is rhombus, the long axis of the second adhesive area 222 is aligned with the opening direction of the product pick-up and drop-off port 3. In this embodiment, the shape of the second adhesive area 222 can be any one of rhombus, rectangle, circle, and triangle, or a combination of multiple shapes, to adapt to different functional requirements and structural aesthetic requirements. When the second adhesive area 222 is rhombus, its long axis is set to be aligned with the opening direction of the product pick-up and drop-off port 3, which can better conform to the force path of the user's opening action, thereby improving the smoothness of opening the label 2 and the convenience of operation. If a rectangular structure is used for the second adhesive area 222, it can provide uniform adhesion while realizing standard die-cutting and simple gluing processes; if a circular structure is used, it can reduce stress concentration in the edge transition area, which is suitable for scenarios with softer materials or requiring flexible opening; if a triangular structure is used, the sharp corner design can enhance directional guidance, which is suitable for guiding designs of specific opening paths. When multiple shapes are used in combination, such as combining a rhombus with a circle, the edges can be softened and the risk of tearing can be reduced while ensuring directional opening. By setting such diverse shapes, the adaptability of the packaging structure in different application scenarios can be enhanced. It can also combine the opening force path and die-cutting characteristics to take into account structural strength, aesthetics and user experience, thereby achieving a good balance between the opening and sealing performance of label 2.

[0037] Optionally, the distance between the second adhesive area 222 and the outer edge of the label 2 is 2-3 mm. In this embodiment, the second adhesive area 222 is located on the side of the label 2 near the opening portion 23, and the distance between it and the outer edge of the label 2 is 2-3 mm. This distance range takes into account both the sealing performance of the label 2 structure and the tolerance requirements of the die-cutting process. If the distance between the second adhesive area 222 and the edge of the label 2 is less than 2 mm, die-cutting errors may cause glue overflow or the edge of the label 2 to fail to adhere reliably, affecting the sealing performance and product appearance; if it is greater than 3 mm, it may result in unnecessary material waste and reduce the structural compactness of the packaging. Therefore, controlling this distance within the range of 2-3 mm helps to achieve the stability of engineering processing and the reliability of the finished product structure. This design improves the tolerance of die-cutting and gluing accuracy in the production process, ensures the visual and functional integrity of the seal, and further reduces the risk of contents exposure and label 2 lifting due to edge adhesive failure, thereby enhancing the user experience and reliability of the product in actual use.

[0038] Optionally, the coating width of the adhesive portion 22 at the rear end away from the opening portion 23 ranges from 5 to 9 mm, the coating width at the left or right end of the adhesive portion 22 ranges from 5 to 8 mm, and the coating width at the front end of the adhesive portion 22 near the opening portion 23 ranges from 6 to 9 mm. In this embodiment, the coating width of the adhesive portion 22 is differentiated according to its position on the label 2 to optimize the balance between sealing performance and ease of opening. Specifically, the coating width at the rear end of the adhesive portion 22 away from the opening portion 23 is 5 to 9 mm to provide a larger adhesion area, thereby enhancing the fixing force at the rear end and ensuring that the label 2 is stably attached to the bag body 1; the coating width at the left or right end is 5 to 8 mm to meet the side sealing requirements while avoiding excessive adhesive to prevent material waste or increased opening resistance; the coating width at the front end near the opening portion 23 is 6 to 9 mm to provide reliable initial sealing force near the opening, preventing the packaging from curling up or being accidentally opened before first use. Furthermore, this width range can be adjusted according to the actual bag material and the shape of label 2 to adapt to different automatic labeling and pressing processes. Through the above-mentioned regional adhesive width control scheme, this embodiment can balance sealing reliability, smoothness of use, and process adaptability, thereby improving the overall performance of the packaging structure in actual production and consumer use.

[0039] Optionally, the first adhesive area 221 is coated with a permanent pressure-sensitive adhesive or a hot melt adhesive, and the second adhesive area 222 is coated with a reusable pressure-sensitive adhesive. In this embodiment, the first adhesive area 221 is coated with a permanent pressure-sensitive adhesive or a hot melt adhesive. This type of adhesive has strong initial tack and holding power, ensuring that the label 2 is firmly attached to the bag 1 during long-term use. It is especially suitable for locations that do not require repeated opening, thus effectively preventing the label 2 from lifting or falling off during transportation, storage, or use. In contrast, the second adhesive area 222 is coated with a reusable pressure-sensitive adhesive. This type of adhesive has good peel and re-adhesion performance, making it easier for users to open and reseal the product access opening 3, avoiding adhesion failure or residual adhesive accumulation due to frequent opening. In another embodiment, different brands and formulations of adhesive systems can be used for the first adhesive area 221 and the second adhesive area 222, depending on the material characteristics and frequency of use of the packaged absorbent products (such as wet wipes, baby diapers, etc.), to match performance indicators such as service life, opening strength, and resealing times. This zoned adhesive strategy not only ensures the sealing and reliability of the packaging structure but also improves the user experience and enhances the functionality and reusability of the packaging.

[0040] The following are several embodiments that illustrate in detail the packaging structure for absorbent products provided by the embodiments of this utility model.

[0041] Example 1

[0042] This embodiment provides a packaging structure for absorbent products, wherein a label 2 is attached to the product opening 3 on the bag body 1 using a partitioned adhesive method. The label 2 includes a covering portion 21, an adhesive portion 22, and an opening portion 23. The covering portion 21 seals the product opening 3. The adhesive portion 22 includes a first adhesive area 221 and a second adhesive area 222. The second adhesive area 222 is located near the opening portion 23, and its adhesive strength is lower than that of the first adhesive area 221. The first adhesive area 221 is coated with a permanent pressure-sensitive adhesive or hot melt adhesive to ensure structural stability; the second adhesive area 222 uses a reusable pressure-sensitive adhesive to improve the user's experience with repeated opening. This structure effectively balances sealing and ease of opening, making it suitable for packaging absorbent products such as wet wipes.

[0043] Example 2

[0044] In this embodiment, the structure of the second adhesive area 222 in Embodiment 1 is refined. Two first weakened areas 2221 are provided near the front edge of the opening part 23, located on the left and right sides respectively. The outer contour of the first weakened area 2221 is consistent with the outer contour of the product loading and unloading port 3, which is used to guide the user to open it quickly. Multiple second weakened areas 2222 are further provided on its inner side. The second weakened areas 2222 are arranged intermittently, and the coating area of ​​the second weakened area 2222 located in the center is smaller than that of the second weakened areas 2222 on both sides. This structure makes the opening path of the label 2 more directional, effectively controls the trend of tearing force changes, improves the smoothness of opening, and prevents the label 2 from being damaged or lifted due to uneven force.

[0045] Example 3

[0046] This embodiment further optimizes the shape and size arrangement of the adhesive area based on Embodiment 2. The shape of the second adhesive area 222 is selected from one or more combinations of rhombus, rectangle, circle and triangle. When a rhombus structure is adopted, its long axis is consistent with the opening direction of the product loading and unloading port 3, which helps to guide the opening direction and optimize the distribution of the peeling force line. In addition, the distance between the second adhesive area 222 and the outer edge of the label 2 is controlled between 2 and 3 mm, which effectively avoids premature peeling at the edge of the label. The coating width of the entire adhesive part 22 has also been optimized, that is, the coating width at the rear end away from the opening part 23 is 5 to 9 mm, the left and right ends are 5 to 8 mm, and the front end near the opening part 23 is 6 to 9 mm, which takes into account both sealing and human-machine operation convenience. This embodiment further improves the functionality and user experience of the packaging structure and is suitable for the packaging of absorbent products that require high-frequency opening and closing.

[0047] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can occur depending on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A packaging structure for an absorbent article, characterized in that, include: The bag (1) and label (2) are provided. The bag (1) has a product opening (3). The label (2) includes a cover (21), an adhesive part (22) and an opening part (23). The cover (21) seals the product opening (3). The adhesive part (22) includes a first adhesive area (221) and a second adhesive area (222). The second adhesive area (222) is located on the side close to the opening part (23), and the adhesive strength of the second adhesive area (222) is lower than that of the first adhesive area (221).

2. The packaging structure of claim 1, wherein The second adhesive region (222) includes at least one first weakened region (2221) and / or at least one second weakened region (2222), wherein the first weakened region (2221) is located at the left and right edges of the front end of the second adhesive region (222) near the opening portion (23), and the second weakened region (2222) is located inside the first weakened region (2221).

3. The packaging structure of claim 2, wherein, The outer contour of the first weakened region (2221) is the same as the outer contour of the article pick-up and drop-off port (3).

4. The packaging structure of claim 2, wherein The adhesive strength of the second weakened region (2222) is 0% to 75% of the adhesive strength of the first weakened region (2221).

5. The packaging structure of claim 2, wherein The multiple second weakened regions (2222) are discontinuously distributed, and the coating area of ​​the second weakened region (2222) located in the center is smaller than the coating area of ​​the second weakened regions (2222) located on both sides of the center.

6. The packaging structure of claim 1, wherein The shape of the second adhesive area (222) is one or more of the following combinations: rhombus, rectangle, circle and triangle.

7. The packaging structure of claim 6, wherein When the second adhesive area (222) is rhomboid, the long axis of the second adhesive area (222) is consistent with the opening direction of the product loading and unloading port (3).

8. The packaging structure of claim 1, wherein The distance between the second adhesive area (222) and the outer edge of the label (2) is 2~3mm.

9. The packaging structure of claim 1, wherein The coating width of the adhesive portion (22) at the rear end away from the opening part (23) is 5-9 mm, the coating width of the adhesive portion (22) at the left or right end is 5-8 mm, and the coating width of the adhesive portion (22) at the front end near the opening part (23) is 6-9 mm.

10. The packaging structure of claim 1, wherein The first adhesive area (221) is coated with a permanent pressure-sensitive adhesive or a hot melt adhesive, and the second adhesive area (222) is coated with a re-adhesive pressure-sensitive adhesive.

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