Anti-counterfeiting packaging bag

Abstract

The utility model relates to an anti-counterfeiting packaging bag, which comprises a bag body, the bag body comprises a bio-based plastic bottom layer, a shading layer, a printing layer and a protective layer which are compounded from inside to outside, a transparent window is arranged on the protective layer, a transparent layer is arranged on the transparent window, and an anti-counterfeiting mark is printed on the printing layer on the inner side of the transparent window. By adopting the bio-based plastic bottom layer, the shading layer, the printing layer and the protective layer which are compounded from inside to outside, the utility model provides the anti-counterfeiting packaging bag which is stable in structure and diversified in function. Due to the multi-layer design, the overall performance of the packaging bag is enhanced, multiple anti-fake mechanisms are provided, and the safety and authenticity of products are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging bags, and particularly relates to an anti-counterfeiting packaging bag. Background Art

[0002] With the development of the global economy and the improvement of consumers' requirements for product quality, the problem of counterfeit and shoddy products has become increasingly serious, which not only damages the rights and interests of consumers but also brings huge economic losses to brand owners. Especially in industries such as food, medicine, and cosmetics, counterfeit products may pose serious health risks. Therefore, it is particularly important to develop effective anti-counterfeiting technologies and packaging solutions.

[0003] Traditional anti-counterfeiting methods include using special labels, two-dimensional codes, RFID tags, etc., but these methods are often easily copied or tampered with and cannot provide sufficient security. In addition, although many existing packaging materials have certain anti-counterfeiting functions, they have deficiencies in terms of environmental protection and are difficult to meet the requirements of sustainable development in modern society.

[0004] In recent years, bio-based plastics have received extensive attention as an environmentally friendly material. Compared with traditional petroleum-based plastics, bio-based plastics are derived from renewable resources and can be degraded into harmless substances under specific conditions, which helps to reduce environmental pollution. However, simply using bio-based plastics as packaging materials is not sufficient to meet complex anti-counterfeiting requirements, especially in the high-end market where consumers have higher requirements for the safety and aesthetics of packaging.

[0005] At present, although some anti-counterfeiting packaging bags on the market adopt a multi-layer composite structure to enhance their functionality, they generally have the following problems:

[0006] 1. Poor abrasion resistance: Scratches are easily generated on the surface of the packaging bag due to friction, affecting the appearance and service life.

[0007] 2. Vulnerable anti-counterfeiting marks: The existing printed anti-counterfeiting marks on the printing layer are easily worn or erased, reducing the effectiveness of anti-counterfeiting.

[0008] 3. Limited environmental protection performance: Although some anti-counterfeiting packaging bags have good anti-counterfeiting functions, environmental protection factors are not fully considered in material selection, which is not conducive to long-term sustainable development.

[0009] In view of the above problems, this application proposes a new type of anti-counterfeiting packaging bag. By reasonably designing the multi-layer composite structure and selecting appropriate bio-based materials, it aims to simultaneously achieve excellent anti-counterfeiting performance, high transparency, good abrasion resistance, and environmental protection characteristics, so as to better meet market demands and protect the interests of consumers. Content of the Utility Model

[0010] In view of the deficiencies in the background art, the present utility model provides an anti-counterfeiting packaging bag.

[0011] The technical solution adopted by the present utility model is: an anti-counterfeiting packaging bag, including a bag body, the bag body includes a bio-based plastic bottom layer, a light-shielding layer, a printing layer, and a protective layer that are compositely arranged from the inside out. A transparent window is provided on the protective layer, a transparent layer is provided on the transparent window, and an anti-counterfeiting mark is printed on the printing layer inside the transparent window.

[0012] Further, the bio-based plastic bottom layer is polylactic acid (PLA) or polyhydroxyalkanoate (PHA).

[0013] Further, the thickness of the bio-based plastic bottom layer is 0.5 - 1 mm.

[0014] Further, the light-shielding layer is a bio-based plastic film added with a light-shielding agent.

[0015] Further, the thickness of the light-shielding layer is 0.1 - 0.2 mm.

[0016] Further, the protective layer is composed of a bottom layer and an anti-scratch coating. The bottom layer is a modified PLA layer or a modified PHA layer, and the anti-scratch coating is a bio-based polyurethane (Bio-PU) coating.

[0017] Further, the thickness of the anti-scratch coating is 20 - 50 μm.

[0018] The beneficial effects of the present utility model are:

[0019] 1. Enhanced anti-counterfeiting performance: An anti-counterfeiting mark is printed on the printing layer inside the transparent window. Consumers can directly view the anti-counterfeiting information through the transparent window, enhancing the intuitiveness and convenience of anti-counterfeiting. Moreover, since the anti-counterfeiting mark is located at the bottom of the transparent protective layer, the anti-counterfeiting mark is not easily worn, further improving the anti-counterfeiting mark.

[0020] 2. High security: The transparent layer on the transparent window not only maintains good transparency but also provides additional protection to prevent the anti-counterfeiting mark from being easily erased or tampered with.

[0021] 3. Good abrasion resistance and scratch resistance: The protective layer is made of bio-based materials with high abrasion resistance, such as modified polylactic acid (PLA) or bio-based polyurethane (Bio-PU), effectively preventing scratches on the surface of the packaging bag due to friction.

[0022] 4. Environmental characteristics: Bio-based materials: All layers are made of degradable bio-based plastic materials such as PLA, PHA, etc. These materials are derived from renewable resources and can be completely degraded into harmless substances under specific conditions, reducing the impact on the environment, meeting the requirements of modern sustainable development, helping to reduce plastic pollution, and promoting the development of the green economy.

[0023] In addition to the purposes, features, and advantages described above, the present utility model has other purposes, features, and advantages.

[0024] Next, the present utility model will be described in further detail with reference to the accompanying drawings. Description of the drawings

[0025] Figure 1 is a schematic structural diagram of the present utility model.

[0026] Figure 2 is a schematic cross-sectional diagram of the present utility model.

[0027] Figure 1-2 In the figure: 1. Bag body; 2. Bio-based plastic bottom layer; 3. Light-shielding layer; 4. Printing layer; 5. Protective layer; 6. Transparent window; 7. Transparent layer; 8. Anti-counterfeiting label; 9. Bottom layer; 10. Scratch-resistant coating. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0030] The present utility model provides an anti-counterfeiting packaging bag.

[0031] In this embodiment, referring to Figure 1-2 , the anti-counterfeiting packaging bag includes a bag body 1. The bag body 1 includes a bio-based plastic bottom layer 2, a light-shielding layer 3, a printing layer 4, and a protective layer 5 that are compounded from the inside out. A transparent window 6 is provided on the protective layer 5. A transparent layer 7 is provided on the transparent window. An anti-counterfeiting label 8 is printed on the printing layer inside the transparent window.

[0032] In the above technical solution, by adopting a bio-based plastic bottom layer, a light-shielding layer, a printing layer, and a protective layer that are composited from the inside out, the present invention provides an anti-counterfeiting packaging bag with stable structure and diverse functions. This multi-layer design not only enhances the overall performance of the packaging bag but also provides multiple anti-counterfeiting mechanisms to ensure the safety and authenticity of the product.

[0033] The composite method between layers belongs to the conventional methods in the art. The following introduces the composite method between layers of this application:

[0034] 1. Bio-based plastic bottom layer and light-shielding layer:

[0035] Hot melt composite: Heat the bio-based plastic bottom layer (such as PLA or PHA) to its softening temperature, and then perform hot melt composite with the bio-based plastic film added with a light-shielding agent through a laminating machine.

[0036] 2. Light-shielding layer and printing layer:

[0037] Dry composite: Use a solvent-based or water-based adhesive to composite the light-shielding layer and the printing layer together. This method is suitable for applications that require high bonding strength and durability.

[0038] Solventless composite: Use a two-component polyurethane adhesive to composite the two layers of materials together through a solventless laminating machine. This method is more environmentally friendly and can provide good bonding effects.

[0039] 3. Printing layer and protective layer:

[0040] Dry composite: Similar to the composite of the light-shielding layer and the printing layer, use a solvent-based or water-based adhesive to composite the printing layer and the protective layer together.

[0041] Extrusion composite: Directly extrude and coat a modified PLA or modified PHA layer on the printing layer through an extruder to form an integrated composite structure. This method can achieve very firm bonding and has high production efficiency.

[0042] 4. Transparent layer on the transparent window:

[0043] Heat sealing: Preset the position of the transparent window on the protective layer, and then heat seal the transparent layer (such as a transparent PLA or PHA film) through a heat sealer to firmly attach it to the transparent window.

[0044] Specifically, the bio-based plastic bottom layer is polylactic acid (PLA) or polyhydroxyalkanoate (PHA).

[0045] Using polylactic acid (PLA) or polyhydroxyalkanoates (PHA) as the bio-based plastic substrate not only provides good mechanical strength and durability, but also these materials are derived from renewable resources, have good biodegradability, contribute to reducing environmental pollution, and meet the requirements of sustainable development.

[0046] Specifically, the thickness of the bio-based plastic substrate is 0.5 - 1 mm.

[0047] Setting the thickness of the bio-based plastic substrate between 0.5 - 1 mm not only ensures sufficient mechanical strength and stability, but also avoids cost increase and material waste caused by excessive thickness. This thickness range can meet most packaging requirements while maintaining good flexibility and processability.

[0048] Specifically, the light-shielding layer is a bio-based plastic film added with a light-shielding agent.

[0049] Using a bio-based plastic film added with a light-shielding agent as the light-shielding layer can effectively block light and prevent the internal products from deteriorating or being damaged due to light exposure. This design is particularly suitable for light-sensitive products such as medicines and foods, extending the shelf life of the products and improving safety.

[0050] Specifically, the thickness of the light-shielding layer is 0.1 - 0.2 mm.

[0051] Setting the thickness of the light-shielding layer between 0.1 - 0.2 mm can achieve a good light-shielding effect while maintaining the lightness and cost-effectiveness of the packaging bag. This thickness range ensures the effectiveness of the light-shielding layer without significantly increasing the weight or volume of the overall packaging bag.

[0052] Specifically, the protective layer is composed of a bottom layer 9 and an anti-scratch coating 10. The bottom layer is a modified PLA layer or a modified PHA layer, and the anti-scratch coating is a bio-based polyurethane (Bio-PU) coating.

[0053] The protective layer is composed of a modified PLA layer or a modified PHA layer and a bio-based polyurethane (Bio-PU) coating. This combination not only provides excellent wear resistance and anti-scratch performance, but also maintains transparency and aesthetics. The modified PLA or PHA layer increases the structural strength, while the Bio-PU coating further enhances the surface hardness and durability, extending the service life of the packaging bag.

[0054] Specifically, the thickness of the anti-scratch coating is 20 - 50 μm.

[0055] Setting the thickness of the scratch-resistant coating between 20 - 50 μm can provide sufficient wear resistance and scratch resistance without affecting transparency. This thickness range ensures the effectiveness of the coating while maintaining the lightweight and economy of the packaging bag. Such a design makes the packaging bag less likely to be scratched even during frequent use or handling, maintaining the cleanliness and beauty of its appearance.

[0056] All technical personnel should note that although this utility model has been described according to the above specific embodiments, the idea of this utility model is not limited to this utility model alone. Any modification using the idea of this utility model will be included in the scope of protection of this patent right.

Claims

1. An anti-counterfeiting packaging bag, comprising a bag body, characterized in that: The bag body includes a bio-based plastic bottom layer, a light-shielding layer, a printing layer, and a protective layer that are compositely arranged from the inside out. A transparent window is provided on the protective layer, and a transparent layer is provided on the transparent window. An anti-counterfeiting mark is printed on the printing layer inside the transparent window.

2. The anti-counterfeiting packaging bag according to claim 1, wherein: The bio-based plastic bottom layer is polylactic acid (PLA) or polyhydroxyalkanoate (PHA).

3. The anti-counterfeiting packaging bag according to claim 2, characterized in that: The thickness of the bio-based plastic bottom layer is 0.5 - 1 mm.

4. The anti-counterfeiting packaging bag according to claim 1, wherein: The light-shielding layer is a bio-based plastic film added with a light-shielding agent.

5. The anti-counterfeiting packaging bag according to claim 1 or 4, characterized in that: The thickness of the light-shielding layer is 0.1 - 0.2 mm.

6. The anti-counterfeiting packaging bag according to claim 1, characterized in that: The protective layer is composed of a bottom layer and an anti-scratch coating. The bottom layer is a modified PLA layer or a modified PHA layer, and the anti-scratch coating is a bio-based polyurethane (Bio-PU) coating.

7. The anti-counterfeiting packaging bag according to claim 6, characterized in that: The thickness of the anti-scratch coating is 20 - 50 μm.

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