Coating water-oxygen barrier film

Abstract

The utility model provides a coating water oxygen barrier film which comprises a base layer and an antibacterial air barrier layer, the lower surface of the base layer is fixedly connected with a lower protective layer through a bonding layer, the upper surface of the base layer is fixedly connected with the antibacterial air barrier layer, and the upper surface of the antibacterial air barrier layer is fixedly connected with a superposed barrier layer. The upper surface of the stacked barrier layer is fixedly connected with the upper protective layer, the antibacterial gas barrier layer is composed of an oxygen barrier layer and an antibacterial anticorrosive layer, and the stacked barrier layer is composed of an organic film layer and an inorganic film layer. According to the utility model, through the cooperation of the antibacterial gas barrier layer, the superposed barrier layer and the upper protective layer, the barrier film is internally provided with multiple water and oxygen barrier structures, so that the water and oxygen barrier effect of the barrier film can be effectively enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of water and oxygen barrier films, in particular to a coated water and oxygen barrier film. Background Art

[0002] Water and oxygen barrier film is the core material of flexible packaging of organic light-emitting semiconductors, quantum dot light-emitting semiconductors, electronic paper and organic thin-film solar cells. It mainly isolates water vapor and oxygen from damaging organic light-emitting materials, quantum dots and organic light-emitting elements. It is a key factor restricting the service life of devices and can play the same water and oxygen isolation effect as glass packaging in non-flexible devices. The commonly used barrier film in commercial applications is the "roll-to-roll" lamination process. The main process is to combine a thicker PET base film with a thinner barrier layer film (also called thin-layer barrier film, mainly PET-based) to form a barrier film. A substrate is prepared by a dry or wet method, and a barrier layer is introduced thereon, such as inorganic silicon dioxide, silicon nitride, aluminum oxide and other water and oxygen barrier layers) through a "roll-to-roll" process for bonding; however, the process of preparing the barrier film by the "roll-to-roll" bonding process has high requirements on the equipment, the barrier layer film is thin (less than 20 microns), and the lateral and longitudinal tensions are difficult to control. It is easy to cause MD lines (longitudinal lines or wrinkles) and TD lines (lateral lines or wrinkles) between the PET base film and the barrier layer film during the bonding process, thereby reducing the yield of the bonding, and ultimately affecting the water and oxygen barrier properties of the barrier film, and ultimately affecting the performance of the terminal product. Utility Model Content

[0003] In order to overcome the defects of the prior art, a coated water and oxygen barrier film is now provided to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, a coated water and oxygen barrier film is provided, comprising: a base layer and an antibacterial gas barrier layer, wherein the lower surface of the base layer is fixedly connected to a lower protective layer via an adhesive layer, and the upper surface of the base layer is fixedly connected to the antibacterial gas barrier layer, and the upper surface of the antibacterial gas barrier layer is fixedly connected to an overlaid barrier layer, and the upper surface of the overlaid barrier layer is fixedly connected to an upper protective layer, the antibacterial gas barrier layer is composed of an oxygen barrier layer and an antibacterial anticorrosion layer, and the overlaid barrier layer is composed of an organic film layer and an inorganic film layer.

[0005] Preferably, the base layer is made of polycarbonate in a flexible transparent substrate.

[0006] Preferably, the adhesive layer is made by coating an environmentally friendly silicone adhesive on the lower surface of the base layer.

[0007] Preferably, the lower protective layer is made of PE protective film.

[0008] Preferably, the antibacterial and anticorrosive layer in the antibacterial and gas barrier layer is fixedly connected to the upper surface of the oxygen barrier layer, and the thickness of the antibacterial and anticorrosive layer is less than the thickness of the oxygen barrier layer.

[0009] Preferably, the oxygen barrier layer is formed by wet coating of polyvinyl alcohol on the upper surface of the base layer.

[0010] Preferably, the antibacterial and anticorrosive layer is formed by silver ions and is disposed on the upper surface of the oxygen barrier layer by magnetron sputtering.

[0011] Preferably, the stacked barrier layer is composed of a group of inorganic film layers and two groups of organic film layers, and the upper and lower surfaces of the inorganic film layers are respectively fixedly connected to a group of organic film layers.

[0012] Preferably, the organic film layer is formed by depositing and curing polyacrylate by flash evaporation technology.

[0013] Preferably, the inorganic film layer is formed by reactive sputtering deposition of zinc metal oxide on the surface of the organic film layer.

[0014] Preferably, the upper protective layer is made of linear low-density polyethylene.

[0015] Preferably, the base layer has a thickness of 40-60 μm.

[0016] Preferably, the thickness of the PE protective film is 50-70 μm.

[0017] Preferably, the thickness of the oxygen barrier layer is 20-30 μm.

[0018] Preferably, the antibacterial and anticorrosive layer has a thickness of 5-20 nm.

[0019] Preferably, the thickness of the organic film layer is 10-50 μm.

[0020] Preferably, the thickness of the inorganic film layer is 50 nm-50 μm.

[0021] Preferably, the thickness of the upper protective layer is 40-60 μm.

[0022] Compared with the prior art, the beneficial effect of the utility model is that through the cooperation of the antibacterial gas barrier layer, the stacked barrier layer, the upper protective layer and the lower protective layer, the barrier effect of the barrier film on water and oxygen can be enhanced, and the probability of damage to the barrier film can be reduced, thereby helping to improve the yield rate of the water and oxygen barrier film. At the same time, the antibacterial and anti-corrosion layer in the antibacterial gas barrier layer and the organic film layer and the inorganic film layer in the stacked barrier layer are all processed in the form of deposition or sputtering. Therefore, compared with the "roll-to-roll" lamination process, the water and oxygen barrier film can have a good water and oxygen barrier effect and enhance the quality of the final product. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a partial front view schematic diagram of an embodiment of the utility model.

[0024] Figure 2 It is a partial front view schematic diagram of the stacked barrier layer of an embodiment of the present utility model.

[0025] Figure 3 It is a partial front view schematic diagram of the antibacterial gas barrier layer of an embodiment of the utility model.

[0026] Figure 4 It is a partial layered schematic diagram of the water and oxygen barrier film of an embodiment of the utility model.

[0027] In the figure: 1. lower protective layer; 2. adhesive layer; 3. base layer; 4. antibacterial and gas barrier layer; 5. superimposed barrier layer; 6. upper protective layer; 7. organic film layer; 8. inorganic film layer; 9. oxygen barrier layer; 10. antibacterial and anticorrosive layer. DETAILED DESCRIPTION

[0028] Reference Figures 1 to 4 As shown, the utility model provides a coated water and oxygen barrier film, comprising: a base layer 3 and an antibacterial gas barrier layer 4, wherein the lower surface of the base layer 3 is fixedly connected to the lower protective layer 1 through an adhesive layer 2, and the upper surface of the base layer 3 is fixedly connected to the antibacterial gas barrier layer 4, and the upper surface of the antibacterial gas barrier layer 4 is fixedly connected to the stacked barrier layer 5, and the upper surface of the stacked barrier layer 5 is fixedly connected to the upper protective layer 6, the antibacterial gas barrier layer 4 is composed of an oxygen barrier layer 9 and an antibacterial anticorrosion layer 10, and the stacked barrier layer 5 is composed of an organic film layer 7 and an inorganic film layer 8.

[0029] In the present embodiment, the lower surface of the base layer 3 is fixedly connected to the lower protective layer 1 through the adhesive layer 2, which can then help reduce the probability of the lower surface of the base layer 3 being contaminated, corroded and scratched, ensuring the smoothness and glossiness of the lower surface of the water-oxygen barrier film, and the oxygen barrier layer 9 fixedly connected to the upper surface of the base layer 3 can help enhance the transparency and gas barrier properties of the water-oxygen barrier film, and the antibacterial and anticorrosive layer 10 is fixedly connected to the upper surface of the oxygen barrier layer 9, which can effectively enhance the antibacterial and anticorrosive effect of the water-oxygen barrier film, while the stacked barrier layer 5 fixedly connected to the upper surface of the antibacterial and anticorrosive layer 10 can enhance the water-oxygen barrier effect of the upper surface of the water-oxygen barrier film, and the organic film layer 7 and the inorganic film layer 8 in the stacked barrier layer 5 are staggered, thereby helping to enhance the flexibility, elasticity and water-oxygen erosion resistance of the water-oxygen barrier film, and then the upper protective layer 6 fixedly connected to the upper surface of the stacked barrier layer 5 makes the surface of the water-oxygen barrier film have the advantages of high strength, good toughness, high rigidity, heat resistance and good cold resistance.

[0030] As a preferred embodiment, the base layer 3 is made of polycarbonate in a flexible transparent substrate.

[0031] In this embodiment, if Figure 1 and Figure 4Polycarbonate is resistant to weak acids, weak alkalis, and neutral oils. Linear carbonate polyester is an almost colorless, glassy amorphous polymer with good optical properties, flame retardancy, and antioxidant properties.

[0032] As a preferred embodiment, the adhesive layer 2 is made by coating an environmentally friendly silicone adhesive on the lower surface of the base layer 3.

[0033] In this embodiment, if Figure 1 and Figure 4 The environmentally friendly silicone adhesive can not only help enhance the fixing effect between the base layer 3 and the lower protective layer 1, but also help reduce the harm of the water and oxygen barrier film to the environment.

[0034] As a preferred implementation, the lower protective layer 1 is made of a PE protective film.

[0035] In this embodiment, if Figure 1 and Figure 4 The setting of the PE protective film can help reduce the probability of damage to the lower surface of the water and oxygen barrier film during production, transportation, storage and use, and improve the overall quality of the water and oxygen barrier film.

[0036] As a preferred embodiment, the antibacterial anticorrosion layer 10 in the antibacterial gas barrier layer 4 is fixedly connected to the upper surface of the oxygen barrier layer 9 , and the thickness of the antibacterial anticorrosion layer 10 is less than the thickness of the oxygen barrier layer 9 .

[0037] In this embodiment, if Figure 1 , Figure 3 and Figure 4 The structural setting of the antibacterial gas barrier layer 4 enables the water and oxygen barrier film to have good antibacterial and anticorrosive effects, and can also assist in enhancing the antioxidant effect of the base layer 3.

[0038] As a preferred embodiment, the oxygen barrier layer 9 is formed on the upper surface of the base layer 3 by wet coating of polyvinyl alcohol.

[0039] In this embodiment, if Figure 3 and Figure 4 Polyvinyl alcohol has good film-forming properties, and the prepared finished film has excellent transparency, glossiness and gas barrier properties in a dry state, thereby helping to improve the overall transparency and oxygen barrier effect of the water-oxygen barrier film.

[0040] As a preferred embodiment, the antibacterial and anticorrosive layer 10 is formed on the upper surface of the oxygen barrier layer 9 by magnetron sputtering of silver ions.

[0041] In this embodiment, if Figure 3 and Figure 4 The provision of the antibacterial and anticorrosive layer 10 can help enhance the antibacterial and anticorrosive effect inside the water and oxygen barrier film, thereby ensuring the overall quality of the water and oxygen barrier film.

[0042] As a preferred embodiment, the stacked barrier layer 5 is composed of a group of inorganic film layers 8 and two groups of organic film layers 7 , and the upper and lower surfaces of the inorganic film layer 8 are respectively fixedly connected to a group of organic film layers 7 .

[0043] In this embodiment, if Figure 2 and Figure 4 The staggered distribution of the organic film layer 7 and the inorganic film layer 8 can effectively enhance the water and oxygen barrier effect of the stacked barrier layer 5, and can also assist in enhancing the overall adhesion stability of the water and oxygen barrier film.

[0044] As a preferred embodiment, the organic film layer 7 is formed by depositing and curing polyacrylate by flash evaporation technology.

[0045] In this embodiment, if Figure 2 and Figure 4 Polyacrylate can form a glossy and water-resistant film, has strong adhesion and is not easy to peel off, is flexible and elastic at room temperature, and has good weather resistance, thereby helping to enhance the water-oxygen barrier effect of the water-oxygen barrier film.

[0046] As a preferred embodiment, the inorganic film layer 8 is formed by reactive sputtering deposition of zinc metal oxide on the surface of the organic film layer 7 .

[0047] In this embodiment, if Figure 2 and Figure 4 The setting of the inorganic film layer 8 can block water and oxygen and protect the inner layer of the water and oxygen barrier film from being corroded by water and oxygen.

[0048] As a preferred embodiment, the upper protective layer 6 is made of linear low-density polyethylene.

[0049] In this embodiment, if Figure 1 and Figure 4 Linear low-density polyethylene material has a high softening temperature and melting temperature, and has the advantages of high strength, good toughness, high rigidity, heat resistance and good cold resistance.

[0050] As a preferred embodiment, the thickness of the base layer 3 is 40-60 μm.

[0051] As a preferred embodiment, the thickness of the PE protective film is 50-70 μm.

[0052] As a preferred embodiment, the thickness of the oxygen barrier layer 9 is 20-30 μm.

[0053] As a preferred embodiment, the thickness of the antibacterial and anticorrosive layer 10 is 5-20 nm.

[0054] As a preferred embodiment, the thickness of the organic film layer 7 is 10-50 μm.

[0055] As a preferred embodiment, the thickness of the inorganic film layer 8 is 50 nm-50 μm.

[0056] As a preferred embodiment, the thickness of the upper protective layer 6 is 40-60 μm.

[0057] The coated water and oxygen barrier film of the utility model has multiple water and oxygen barrier structures inside the barrier film through the cooperation of the antibacterial gas barrier layer 4, the superimposed barrier layer 5 and the upper protective layer 6, which can effectively enhance the water and oxygen barrier effect of the barrier film, and at the same time help reduce the probability of damage on the surface of the water and oxygen barrier film, thereby improving the overall quality of the water and oxygen barrier film.

Claims

1. A coated water and oxygen barrier film, comprising: A base layer (3) and an antibacterial gas barrier layer (4), characterized in that: the lower surface of the base layer (3) is fixedly connected to the lower protective layer (1) through an adhesive layer (2), and the upper surface of the base layer (3) is fixedly connected to the antibacterial gas barrier layer (4), and the upper surface of the antibacterial gas barrier layer (4) is fixedly connected to the stacked barrier layer (5), and the upper surface of the stacked barrier layer (5) is fixedly connected to the upper protective layer (6), the antibacterial gas barrier layer (4) is composed of an oxygen barrier layer (9) and an antibacterial anticorrosive layer (10), and the stacked barrier layer (5) is composed of an organic film layer (7) and an inorganic film layer (8).

2. A coated water and oxygen barrier film according to claim 1, characterized in that: The base layer (3) is made of polycarbonate in a flexible transparent substrate.

3. A coated water and oxygen barrier film according to claim 1, characterized in that: The adhesive layer (2) is made by coating an environmentally friendly silica gel adhesive on the lower surface of the base layer (3).

4. The coated water and oxygen barrier film according to claim 1, characterized in that: The lower protective layer (1) is made of a PE protective film.

5. The coated water and oxygen barrier film according to claim 1, characterized in that: The antibacterial anticorrosion layer (10) in the antibacterial gas barrier layer (4) is fixedly connected to the upper surface of the oxygen barrier layer (9), and the thickness of the antibacterial anticorrosion layer (10) is less than the thickness of the oxygen barrier layer (9).

6. A coated water and oxygen barrier film according to claim 5, characterized in that: The oxygen barrier layer (9) is formed by wet coating of polyvinyl alcohol on the upper surface of the base layer (3).

7. The coated water and oxygen barrier film according to claim 5, characterized in that: The antibacterial and anticorrosive layer (10) is formed by silver ions and arranged on the upper surface of the oxygen barrier layer (9) by magnetron sputtering.

8. The coated water and oxygen barrier film according to claim 1, characterized in that: The stacked barrier layer (5) is composed of a group of inorganic film layers (8) and two groups of organic film layers (7), and the upper and lower surfaces of the inorganic film layer (8) are respectively fixedly connected to a group of organic film layers (7), and the organic film layers (7) are formed by depositing and solidifying polyacrylate by flash evaporation technology.

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