An environmentally friendly water-based coating PTP aluminum foil multilayer composite packaging structure

Abstract

This utility model relates to the technical field of PTP aluminum foil multilayer composite structures and discloses an environmentally friendly water-based coating PTP aluminum foil multilayer composite packaging structure, including: a printing layer, a protective layer, an aluminum foil layer, and a heat-sensitive adhesive protective layer. The bottom surface of the printing layer is fixedly connected to the protective layer, the bottom surface of the protective layer is fixedly connected to the aluminum foil layer, and the bottom surface of the aluminum foil layer is fixedly connected to the heat-sensitive adhesive protective layer. The printing layer, protective layer, aluminum foil layer, and heat-sensitive adhesive protective layer are all internal composite layer structures. This utility model achieves environmental protection with all-water-based coating through the composite structure of the printing layer, protective layer, aluminum foil layer, heat-sensitive adhesive protective layer, and antibacterial protective layer, solving problems such as pinholes and dents in traditional packaging, improving barrier, sealing, printing performance, and ease of use, and meeting environmental protection and customization needs.

Description

Technical Field

[0001] This utility model relates to the technical field of PTP aluminum foil multilayer composite structure, specifically an environmentally friendly water-based coating PTP aluminum foil multilayer composite packaging structure. Background Technology

[0002] In the fields of electronic products, health products and food packaging, PTP aluminum foil is widely used as a sealing barrier material due to its advantages such as high barrier properties and heat-sealing properties. It originated in Europe in the 1930s. my country introduced related technologies in the 1980s and was able to independently produce single-color or multi-color printing and coating equipment in the 1990s. At present, domestic PTP aluminum foil gravure printing equipment basically meets packaging needs.

[0003] However, traditional PTP aluminum foil packaging has obvious defects in production and use: it is prone to problems such as pinholes, dents, poor printing and poor heat sealing due to the influence of packaging appearance, printing requirements and heat sealing performance; and some products use oil-based coatings, which have a pungent odor, which not only pollutes the production environment, but may also affect the contents of the packaging such as medicines. In addition, with the increasing environmental protection requirements and the increasing market demand for personalized packaging, the shortcomings of traditional packaging materials in terms of environmental protection and customized adaptability are becoming increasingly prominent. To address this, we propose an environmentally friendly water-based coating PTP aluminum foil multilayer composite packaging structure. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides an environmentally friendly water-based coating PTP aluminum foil multilayer composite packaging structure, which solves the aforementioned problems.

[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0006] An environmentally friendly water-based coating PTP aluminum foil multilayer composite packaging structure includes:

[0007] The system comprises a printed layer, a protective layer, an aluminum foil layer, and a thermal adhesive protective layer. The bottom surface of the printed layer is fixedly connected to the protective layer, the bottom surface of the protective layer is fixedly connected to the aluminum foil layer, and the bottom surface of the aluminum foil layer is fixedly connected to the thermal adhesive protective layer. All three layers—the printed layer, the protective layer, the aluminum foil layer, and the thermal adhesive protective layer—are internal composite layer structures.

[0008] Preferably, the interior of the printed layer is composed of an outer wear-resistant protective layer, a color printed layer, and a printed protective layer. The bottom surface of the outer wear-resistant protective layer is fixedly connected to the color printed layer, the bottom surface of the color printed layer is fixedly connected to the printed protective layer, and the bottom surface of the printed protective layer is fixedly connected to a protective layer.

[0009] Preferably, the protective layer is composed of a transparent protective layer and an oxygen barrier reinforcement layer. The bottom surface of the printed protective layer is fixedly connected to the transparent protective layer, the bottom surface of the transparent protective layer is fixedly connected to the oxygen barrier reinforcement layer, and the bottom surface of the oxygen barrier reinforcement layer is fixedly connected to the aluminum foil layer.

[0010] Preferably, the interior of the aluminum foil layer is composed of an aluminum foil base layer and a moisture barrier transition layer. The bottom surface of the oxygen barrier reinforcement layer is fixedly connected to the aluminum foil base layer, the bottom surface of the aluminum foil base layer is fixedly connected to the moisture barrier transition layer, and the bottom surface of the moisture barrier transition layer is fixedly connected to a heat-sensitive adhesive protective layer.

[0011] Preferably, the interior of the heat-sensitive adhesive protective layer is composed of a heat-sealable adhesive layer, a main heat-sealable adhesive layer, and an inner anti-stick layer. The bottom surface of the moisture barrier transition layer is fixedly connected to the heat-sealable adhesive layer, the bottom surface of the heat-sealable adhesive layer is fixedly connected to the main heat-sealable adhesive layer, and the bottom surface of the main heat-sealable adhesive layer is fixedly connected to the inner anti-stick layer.

[0012] Preferably, an antibacterial protective layer is fixedly connected to the bottom surface of the inner anti-stick layer.

[0013] Compared with the prior art, the advantages of this utility model are:

[0014] An environmentally friendly water-based coating PTP aluminum foil multilayer composite packaging structure is provided, which has the following beneficial effects:

[0015] This utility model provides an environmentally friendly water-based coating PTP aluminum foil multi-layer composite packaging structure. The printing layer, composed of an outer wear-resistant protective layer, a color printing layer, and a printing protective layer, forms a high-strength, wear-resistant surface, enabling high-precision pattern printing and preventing fading and blurring. The protective layer, consisting of a transparent protective layer and an oxygen barrier enhancement layer, protects the printing layer and enhances oxygen barrier performance, extending the shelf life of the contents. The aluminum foil layer, composed of an aluminum foil base layer and a moisture barrier transition layer, acts as a core barrier layer, blocking various substances and enhancing adhesion to the heat-sealing adhesive layer. The heat-sensitive adhesive protective layer, composed of a heat-sealing adhesive layer, a main heat-sealing adhesive layer, and an inner anti-stick layer, optimizes heat-sealing performance, achieves high-strength sealing, and prevents contents from sticking together. In addition, an antibacterial protective layer provides antibacterial and anti-mildew functions. The overall structure, using a fully water-based coating system, achieves environmental friendliness and odorlessness, solving problems such as pinholes, dents, poor printing, and poor heat sealing common in traditional packaging. It meets environmental protection requirements and personalized customization needs, improving the packaging's barrier properties, sealing, printing effect, and ease of use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the printed layer of this utility model.

[0018] Figure 3 This is a schematic diagram of the internal structure of the protective layer of this utility model.

[0019] Figure 4 This is a schematic diagram of the internal structure of the aluminum foil layer in part of the present invention;

[0020] Figure 5 This is a schematic diagram of the internal structure of the thermosensitive adhesive protective layer of this utility model.

[0021] In the diagram: 1. Printed layer; 2. Protective layer; 3. Aluminum foil layer; 4. Heat-sensitive adhesive protective layer; 5. Outer abrasion-resistant protective layer; 6. Color printing layer; 7. Printed protective layer; 8. Transparent protective layer; 9. Oxygen barrier reinforcement layer; 10. Aluminum foil base layer; 11. Moisture barrier transition layer; 12. Heat-sealable adhesive layer; 13. Main heat-sealable adhesive layer; 14. Inner anti-stick layer; 15. Antibacterial protective layer. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-5 This utility model provides a technical solution:

[0024] An environmentally friendly water-based coating PTP aluminum foil multilayer composite packaging structure includes:

[0025] The system consists of a printed layer 1, a protective layer 2, an aluminum foil layer 3, and a thermal adhesive protective layer 4. The bottom surface of the printed layer 1 is fixedly connected to the protective layer 2, the bottom surface of the protective layer 2 is fixedly connected to the aluminum foil layer 3, and the bottom surface of the aluminum foil layer 3 is fixedly connected to the thermal adhesive protective layer 4. All three layers are internal composite layers.

[0026] Furthermore, the interior of the printed layer 1 consists of an outer wear-resistant protective layer 5, a color printing layer 6, and a printing protective layer 7. The bottom surface of the outer wear-resistant protective layer 5 is fixedly connected to the color printing layer 6, the bottom surface of the color printing layer 6 is fixedly connected to the printing protective layer 7, and the bottom surface of the printing protective layer 7 is fixedly connected to the protective layer 2. Through the function of the outer wear-resistant protective layer 5, a high-strength wear-resistant surface is formed to resist friction damage during transportation and storage. Through the function of the color printing layer 6, high-precision pattern printing is achieved using imported 8-color gravure printing equipment, meeting the personalized appearance requirements of packaging for electronic cigarettes, health products, etc. Finally, through the function of the printing protective layer 7, the printed layer is protected from ultraviolet rays and chemical substances, preventing fading and pattern blurring; improving surface flatness, and making subsequent composite layer bonding more uniform.

[0027] Furthermore, the interior of the protective layer 2 consists of a transparent protective layer 8 and an oxygen barrier reinforcement layer 9. The bottom surface of the printed protective layer 7 is fixedly connected to the transparent protective layer 8, the bottom surface of the transparent protective layer 8 is fixedly connected to the oxygen barrier reinforcement layer 9, and the bottom surface of the oxygen barrier reinforcement layer 9 is fixedly connected to the aluminum foil layer 3. Through the function of the transparent protective layer 8, the printed layer is protected from friction and chemical corrosion. Through the function of the oxygen barrier reinforcement layer 9, the microscopic defects of the aluminum foil are compensated for, forming a synergistic barrier system with the aluminum foil layer, effectively extending the shelf life of food, medicine and other contents.

[0028] Furthermore, the interior of the aluminum foil layer 3 consists of an aluminum foil base layer 10 and a moisture barrier transition layer 11. The bottom surface of the oxygen barrier reinforcement layer 9 is fixedly connected to the aluminum foil base layer 10, the bottom surface of the aluminum foil base layer 10 is fixedly connected to the moisture barrier transition layer 11, and the bottom surface of the moisture barrier transition layer 11 is fixedly connected to the heat-sensitive adhesive protective layer 4. Through the function of the aluminum foil base layer 10, the core barrier layer blocks oxygen, moisture, ultraviolet rays and odors, ensuring the quality of the contents of the packaging; it provides mechanical support and maintains the stability of the packaging structure. At the same time, the function of the moisture barrier transition layer 11 enhances the adhesion between the aluminum foil and the heat-sealing adhesive layer.

[0029] Furthermore, the interior of the heat-sensitive adhesive protective layer 4 is composed of a heat-sealable adhesive layer 12, a main heat-sealable adhesive layer 13, and an inner anti-stick layer 14. The bottom surface of the moisture barrier transition layer 11 is fixedly connected to the heat-sealable adhesive layer 12, the bottom surface of the heat-sealable adhesive layer 12 is fixedly connected to the main heat-sealable adhesive layer 13, and the bottom surface of the main heat-sealable adhesive layer 13 is fixedly connected to the inner anti-stick layer 14. Through the function of the heat-sealable adhesive layer 12, the heat-sealing temperature window is optimized to adapt to the heat-sealing parameters of different packaging equipment; the heat-sealing initial response speed is improved, and the heat-sealing defect rate during production is reduced. The main heat-sealable adhesive layer 13 provides high-strength sealing with stable puncture resistance, meeting the immediate opening requirements of pharmaceutical packaging. Simultaneously, the inner anti-stick layer 14 prevents the contents of the packaging from adhering to the heat-sealable adhesive layer.

[0030] Furthermore, an antibacterial protective layer 15 is fixedly connected to the bottom surface of the inner anti-stick layer 14, providing antibacterial and anti-mildew properties through the function of the antibacterial protective layer 15.

[0031] Structural Description:

[0032] Printed Layer 1: The interior is composed of an outer wear-resistant protective layer 5, a color printing layer 6, and a printing protective layer 7. The outer wear-resistant protective layer 5 uses nano-silica modified water-based polyurethane to form a high-strength wear-resistant surface, resisting friction damage during transportation and storage. The color printing layer 6 uses 8-color gravure printing with water-based pigments to achieve high-precision pattern printing, meeting personalized appearance requirements. The printing protective layer 7 is an OP protective coating that protects the printed layer from ultraviolet rays and chemical corrosion, improving surface smoothness to facilitate subsequent lamination.

[0033] Protective layer 2: Composed of a transparent protective layer 8 and an oxygen barrier enhancement layer 9. The transparent protective layer 8 further protects the printed layer and prevents friction and chemical corrosion. The oxygen barrier enhancement layer 9 uses a nano-ceramic coating modified with polyvinyl alcohol to compensate for the micro-defects of the aluminum foil and work synergistically with the aluminum foil layer to enhance the oxygen barrier performance and extend the shelf life of the contents.

[0034] Aluminum foil layer 3: includes aluminum foil base layer 10 and water vapor barrier transition layer 11. Aluminum foil base layer 10 is electrolytic aluminum foil with a purity of ≥99.5%, which serves as the core barrier layer to block oxygen, water vapor, ultraviolet rays and odors, and provides mechanical support. Water vapor barrier transition layer 11 is silane-modified waterborne acrylate, which enhances the adhesion between aluminum foil and heat-sealing adhesive layer and reduces water vapor transmission.

[0035] Thermosensitive adhesive protective layer 4 consists of a heat-sealable adhesive layer 12, a main heat-sealable adhesive layer 13, and an inner anti-stick layer 14. The heat-sealable adhesive layer 12 is a modified EVA water-based heat-sealable adhesive, which optimizes the heat-seal temperature window and improves the initial response speed of heat sealing. The main heat-sealable adhesive layer 13 is a water-based heat-sealable adhesive, which achieves high-strength sealing and is easy to puncture. The inner anti-stick layer 14 is food-grade siloxane-modified PE, which prevents the contents from sticking to the heat-sealable adhesive layer and facilitates removal.

[0036] Antibacterial protective layer 15: Fixed to the bottom surface of the inner anti-stick layer 14, it adopts a nano silver ion water-based coating, which has an antibacterial rate of ≥99% against Escherichia coli and Staphylococcus aureus, reducing the risk of microbial contamination of the contents and meeting the hygiene standards for pharmaceutical packaging;

[0037] Working principle: When this utility model is used, the outer wear-resistant protective layer 5 resists friction damage, the color printing layer 6 achieves high-precision pattern printing through an 8-color gravure printing machine, the printing protective layer 7 protects the printing layer and improves the adhesion of subsequent composite layers; the transparent protective layer 8 further protects the printing layer, the oxygen barrier enhancement layer 9 compensates for the microscopic defects of the aluminum foil base layer 10 to extend the shelf life of the contents; the aluminum foil base layer 10, as the core barrier layer, blocks various substances and maintains structural stability, the water vapor barrier transition layer 11 enhances the adhesion with the heat-sealing adhesive layer; the heat-sealing adhesive layer 12 optimizes the heat-sealing temperature window and reduces heat-sealing defects, the main heat-sealing adhesive layer 13 achieves high-strength sealing and is easy to puncture, the inner anti-stick layer 14 prevents the contents from sticking together, the antibacterial protective layer 15 provides antibacterial and anti-mildew protection, and the all-water-based coating system ensures environmental protection and no odor.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An environmentally friendly water-based paint PTP aluminum foil multilayer composite packaging structure, characterized in that, include: The printed layer (1), protective layer (2), aluminum foil layer (3), and thermal adhesive protective layer (4) are provided. The bottom surface of the printed layer (1) is fixedly connected to the protective layer (2), the bottom surface of the protective layer (2) is fixedly connected to the aluminum foil layer (3), and the bottom surface of the aluminum foil layer (3) is fixedly connected to the thermal adhesive protective layer (4). The printed layer (1), protective layer (2), aluminum foil layer (3), and thermal adhesive protective layer (4) are all internal composite layer structures. The interior of the printed layer (1) is composed of an outer wear-resistant protective layer (5), a color printed layer (6), and a printed protective layer (7). The bottom surface of the outer wear-resistant protective layer (5) is fixedly connected to the color printed layer (6), the bottom surface of the color printed layer (6) is fixedly connected to the printed protective layer (7), and the bottom surface of the printed protective layer (7) is fixedly connected to the protective layer (2). The interior of the protective layer (2) is composed of a transparent protective layer (8) and an oxygen barrier enhancement layer (9). The bottom surface of the printed protective layer (7) is fixedly connected to the transparent protective layer (8), the bottom surface of the transparent protective layer (8) is fixedly connected to the oxygen barrier enhancement layer (9), and the bottom surface of the oxygen barrier enhancement layer (9) is fixedly connected to the aluminum foil layer (3).

2. The environmentally friendly water-based coating PTP aluminum foil multilayer composite packaging structure according to claim 1, characterized in that, The interior of the aluminum foil layer (3) is composed of an aluminum foil base layer (10) and a water vapor barrier transition layer (11). The bottom surface of the oxygen barrier enhancement layer (9) is fixedly connected to the aluminum foil base layer (10), the bottom surface of the aluminum foil base layer (10) is fixedly connected to the water vapor barrier transition layer (11), and the bottom surface of the water vapor barrier transition layer (11) is fixedly connected to the heat-sensitive adhesive protective layer (4).

3. The environmentally friendly water-based coating PTP aluminum foil multilayer composite packaging structure according to claim 2, characterized in that, The interior of the heat-sensitive adhesive protective layer (4) is composed of a heat-sealable adhesive layer (12), a main heat-sealable adhesive layer (13), and an inner anti-stick layer (14). The bottom surface of the water vapor barrier transition layer (11) is fixedly connected to the heat-sealable adhesive layer (12), the bottom surface of the heat-sealable adhesive layer (12) is fixedly connected to the main heat-sealable adhesive layer (13), and the bottom surface of the main heat-sealable adhesive layer (13) is fixedly connected to the inner anti-stick layer (14).

4. The environmentally friendly water-based coating PTP aluminum foil multilayer composite packaging structure according to claim 3, characterized in that, An antibacterial protective layer (15) is fixedly connected to the bottom surface of the inner anti-stick layer (14).

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