Antistatic medicine packaging composite film

Abstract

The utility model discloses an anti-static medicine packaging composite film, which belongs to the technical field of medicine packaging composite films and comprises an anti-static coating on the outermost layer of the packaging composite film, a breathable layer group for assisting in water drainage is attached to the inner side of the anti-static coating, and an antibacterial layer is attached to the inner side of the breathable layer group. A multi-layer antistatic layer group for enhancing the antistatic and corona-resistant effects of the packaging composite film is attached to the inner side of the antibacterial layer, a PET base material is attached to the inner side of the multi-layer antistatic layer group, the surface of the PET base material is coated with a construction adhesive layer, and a PET release film is attached to the other side of the construction adhesive layer; the composite film is provided with the anti-static coating and the multiple anti-static layer sets, the anti-static effect is high, the multiple anti-static layer sets have the good corona-resistant effect, and the anti-static time efficiency of the packaging composite film in use can be prolonged.

Description

Technical Field

[0001] This utility model relates to the field of pharmaceutical packaging composite film technology, specifically to antistatic pharmaceutical packaging composite film. Background Technology

[0002] Pharmaceutical packaging composite films are composed of a variety of materials, including common materials such as polyester, aluminum foil, and polyethylene. Depending on the needs of pharmaceutical packaging, composite films have properties such as moisture-proof, oxygen-barrier, light-blocking, water-resistant, and antistatic properties, and are suitable for packaging various dosage forms of pharmaceuticals such as tablets, capsules, and granules.

[0003] For example, the patent with publication number CN215041052U describes an antistatic packaging composite film, which includes a PET layer, an aluminum foil layer, a PE layer, and an antistatic layer. The PET layer, aluminum foil layer, PE layer, and antistatic layer are laminated from the outside to the inside to form a film. The structure is compact, with the PET layer, aluminum foil layer, PE layer, and antistatic layer laminated layer by layer from top to bottom. The materials are environmentally friendly, easy to recycle, and can be produced on a general production line, reducing manufacturing costs.

[0004] The aforementioned packaging composite films have good composite performance and strong antistatic properties. However, the overall corona resistance of the composite films is limited. Under prolonged continuous contact with static-electrostatic objects, the antistatic ability of the composite films gradually decreases, affecting the antistatic effect of subsequent drug packaging. In addition, some packaging composite films have high internal moisture content in high humidity environments, and multi-layered composite films are prone to delamination, thereby reducing the overall antistatic effect of the composite film application.

[0005] To address the aforementioned issues, there is an urgent need for innovative designs based on existing pharmaceutical packaging composite films. Utility Model Content

[0006] The purpose of this invention is to provide an antistatic pharmaceutical packaging composite film to solve the problem mentioned in the background art that the overall corona resistance of the composite film is limited, and that the antistatic ability of the composite film gradually decreases under long-term continuous contact with static objects, thus affecting the antistatic effect of subsequent pharmaceutical packaging.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an antistatic pharmaceutical packaging composite film, comprising an outermost antistatic coating layer, an inner breathable layer assembly for assisting moisture dissipation attached to the antistatic coating layer, and an antibacterial layer attached to the inner side of the breathable layer assembly; an inner multilayer antistatic layer assembly for enhancing the antistatic and corona resistance of the packaging composite film attached to the inner side of the antibacterial layer assembly, and a PET substrate attached to the inner side of the multilayer antistatic layer assembly, wherein an adhesive layer is coated on the surface of the PET substrate, and a PET release film is attached to the other side of the adhesive layer.

[0008] Preferably, the multilayer antistatic layer group has a five-layer structure, the middle layer of the multilayer antistatic layer group is a pure PI film layer, the two outermost layers of the multilayer antistatic layer group are primary antistatic layers, and the two outermost layers of the multilayer antistatic layer group are secondary antistatic layers; the primary antistatic layers are attached to both sides of the pure PI film layer, and the secondary antistatic layers are attached to the surface of the primary antistatic layers.

[0009] Preferably, the primary antistatic layer and the secondary antistatic layer are composed of a mixture of SiO2-Al2O3 nanoparticles and PI film, and the mass fractions of SiO2-Al2O3 nanoparticles and PI film that make up the primary antistatic layer and the secondary antistatic layer are different.

[0010] Preferably, a protruding pressing block is pressed onto one side of the pure PI film layer, the primary antistatic layer, and the secondary antistatic layer, and a recessed pressing groove is pressed onto the other side of the pure PI film layer, the primary antistatic layer, and the secondary antistatic layer.

[0011] Preferably, the size of the pressure groove corresponds to the size of the pressure block.

[0012] Preferably, the breathable layer group has a three-layer structure, with the middle layer being a PE breathable layer, and honeycomb breathable layers attached to the upper and lower surfaces of the PE breathable layer.

[0013] Preferably, the honeycomb breathable layer has diamond-shaped grooves and breathable holes, and the positions of the breathable holes correspond to the positions of the diamond-shaped grooves.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This antistatic pharmaceutical packaging composite film is composed of an antistatic coating, a breathable layer, an antibacterial layer, a multi-layer antistatic layer, a PET substrate, an adhesive layer, and a PET release film. The antistatic coating and multi-layer antistatic layer effectively increase the antistatic ability of the composite film, making it suitable for pharmaceutical packaging.

[0016] Furthermore, the multilayer antistatic layer group can improve the corona resistance of the composite film. The multilayer antistatic layer group is composed of a pure PI film layer, a primary antistatic layer and a secondary antistatic layer. The primary antistatic layer and the secondary antistatic layer are composed of SiO2-Al2O3 nanoparticles and PI film with different mass fractions. The overall corona resistance is strong, which extends the antistatic service life of the composite film.

[0017] The five-layer pure PI film layer, primary antistatic layer and secondary antistatic layer are bonded together by pressing blocks and pressing grooves to keep the layers firmly bonded together and avoid delamination.

[0018] Furthermore, the breathable layer assembly consists of a PE breathable layer and a honeycomb breathable layer. The PE breathable layer and the honeycomb breathable layer have good breathability, allowing the moisture in the composite membrane to be quickly discharged to the outside.

[0019] The diamond-shaped grooves and air pores on the PE breathable layer and the honeycomb breathable layer are positioned in a corresponding manner, further improving the breathability of the breathable layer assembly. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of the antistatic coating of this utility model;

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of the pure PI thin film layer of this utility model;

[0022] Figure 3 This is a schematic diagram of the three-dimensional structure of the pressing block of this utility model;

[0023] Figure 4 This is a schematic diagram of the three-dimensional structure of the pressure groove of this utility model;

[0024] Figure 5 This is a three-dimensional structural diagram of the honeycomb breathable layer of this utility model;

[0025] Figure 6 This is a top view of the ventilation hole structure of this utility model.

[0026] In the diagram: 1. Antistatic coating; 2. Breathable layer group; 21. PE breathable layer; 22. Honeycomb breathable layer; 3. Antibacterial layer; 4. Multi-layer antistatic layer group; 41. Pure PI film layer; 42. Primary antistatic layer; 43. Secondary antistatic layer; 5. PET substrate; 6. Construction adhesive layer; 7. PET release film; 8. Press block; 9. Press groove; 10. Diamond groove; 11. Ventilation hole. Detailed Implementation

[0027] 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.

[0028] Example 1: Please refer to Figures 1-6 The present invention provides the following technical solution:

[0029] An antistatic pharmaceutical packaging composite film includes an outermost antistatic coating 1, an inner breathable layer group 2 for assisting moisture dissipation, and an antibacterial layer 3; an inner multilayer antistatic layer group 4 for enhancing the antistatic and corona resistance of the packaging composite film, and an inner PET substrate 5; an adhesive layer 6 is coated on the surface of the PET substrate 5, and a PET release film 7 is attached to the other side of the adhesive layer 6.

[0030] The multilayer antistatic layer group 4 has a five-layer structure. The middle layer of the multilayer antistatic layer group 4 is a pure PI film layer 41, and the two outermost layers of the multilayer antistatic layer group 4 are primary antistatic layers 42, and the two outermost layers of the multilayer antistatic layer group 4 are secondary antistatic layers 43. The primary antistatic layer 42 is attached to both sides of the pure PI film layer 41, and the secondary antistatic layer 43 is attached to the surface of the primary antistatic layer 42.

[0031] The primary antistatic layer 42 and the secondary antistatic layer 43 are composed of a mixture of SiO2-Al2O3 nanoparticles and PI film. The mass fractions of SiO2-Al2O3 nanoparticles and PI film that make up the primary antistatic layer 42 and the secondary antistatic layer 43 are different.

[0032] A protruding pressing block 8 is pressed onto one side of the pure PI film layer 41, the primary antistatic layer 42, and the secondary antistatic layer 43, and a recessed pressing groove 9 is pressed onto the other side of the pure PI film layer 41, the primary antistatic layer 42, and the secondary antistatic layer 43. The position and size of the pressing groove 9 correspond to the position and size of the pressing block 8.

[0033] The composite film consists of an antistatic coating 1, a breathable layer group 2, an antibacterial layer 3, a multi-layer antistatic layer group 4, a PET substrate 5, an adhesive layer 6, and a PET release film 7. Among them, the antistatic coating 1 and the multi-layer antistatic layer group 4 can effectively improve the antistatic effect of the composite film.

[0034] The multilayer antistatic layer group 4 consists of a pure PI film layer 41, a primary antistatic layer 42, and a secondary antistatic layer 43. The pure PI film layer 41, the primary antistatic layer 42, and the secondary antistatic layer 43 have good corona resistance, which can further improve the antistatic effect of the composite film and extend the antistatic duration of the composite film.

[0035] Example 2: Based on Example 1, a breathable layer group 2 is also disclosed, the specific structure of which is as follows:

[0036] The breathable layer group 2 has a three-layer structure. The middle layer of the breathable layer group 2 is a PE breathable layer 21, and the upper and lower surfaces of the PE breathable layer 21 are bonded with honeycomb breathable layers 22.

[0037] The honeycomb breathable layer 22 has diamond-shaped grooves 10 and breathable holes 11, the positions of which correspond to the positions of the diamond-shaped grooves 10.

[0038] When the humidity in the composite membrane is high, the breathable layer group 2 in the composite membrane can effectively help the moisture to dissipate outward, reduce the water content in the composite membrane, and prevent the composite membrane from delaminating. The breathable layer group 2 is composed of a PE breathable layer 21 and a honeycomb breathable layer 22. The PE breathable layer 21 and the honeycomb breathable layer 22 have good air permeability, and the breathable holes 11 and the diamond grooves 10 opened on the PE breathable layer 21 and the honeycomb breathable layer 22 are positioned vertically and vertically, which can further accelerate the discharge of moisture in the composite membrane.

[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] Although the present invention 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 the present invention should be included within the protection scope of the present invention.

Claims

1. An antistatic pharmaceutical packaging composite film, comprising an antistatic coating (1) on the outermost layer of the packaging composite film, characterized in that: The antistatic coating (1) has a breathable layer group (2) that assists in the dissipation of moisture attached to its inner side, and an antibacterial layer (3) is attached to the inner side of the breathable layer group (2). The antibacterial layer (3) is bonded to the inner side with a multi-layer antistatic layer group (4) that enhances the antistatic and corona resistance of the packaging composite film, and a PET substrate (5) is bonded to the inner side of the multi-layer antistatic layer group (4). The surface of the PET substrate (5) is coated with an adhesive layer (6), and a PET release film (7) is bonded to the other side of the adhesive layer (6).

2. The antistatic pharmaceutical packaging composite film according to claim 1, characterized in that: The multilayer antistatic layer group (4) has a five-layer structure. The middle layer of the multilayer antistatic layer group (4) is a pure PI film layer (41), and the two outermost layers of the multilayer antistatic layer group (4) are primary antistatic layers (42), and the two outermost layers of the multilayer antistatic layer group (4) are secondary antistatic layers (43). The primary antistatic layer (42) is bonded to both sides of the pure PI film layer (41), and the secondary antistatic layer (43) is bonded to the surface of the primary antistatic layer (42).

3. The antistatic pharmaceutical packaging composite film according to claim 2, characterized in that: The primary antistatic layer (42) and the secondary antistatic layer (43) are composed of a mixture of SiO2-Al2O3 nanoparticles and PI film. The mass fractions of SiO2-Al2O3 nanoparticles and PI film that make up the primary antistatic layer (42) and the secondary antistatic layer (43) are different.

4. The antistatic pharmaceutical packaging composite film according to claim 2, characterized in that: A protruding pressing block (8) is pressed onto one side of the pure PI film layer (41), the primary antistatic layer (42), and the secondary antistatic layer (43), and a recessed pressing groove (9) is pressed onto the other side of the pure PI film layer (41), the primary antistatic layer (42), and the secondary antistatic layer (43).

5. The antistatic pharmaceutical packaging composite film according to claim 4, characterized in that: The position and size of the pressure groove (9) correspond to the position and size of the pressure block (8).

6. The antistatic pharmaceutical packaging composite film according to claim 1, characterized in that: The breathable layer group (2) has a three-layer structure. The middle layer of the breathable layer group (2) is a PE breathable layer (21), and the upper and lower surfaces of the PE breathable layer (21) are bonded with honeycomb breathable layers (22).

7. The antistatic pharmaceutical packaging composite film according to claim 6, characterized in that: The honeycomb breathable layer (22) has a diamond-shaped groove (10) and a breathable hole (11) on it. The positions of the breathable holes (11) correspond to the positions of the diamond-shaped grooves (10).

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