Plastic packaging film with good waterproof and moistureproof performance

Abstract

The utility model discloses a plastic packaging film with good waterproof and moistureproof performance, which has the advantages of good waterproof and moistureproof performance, corrosion resistance, aging resistance and high transparency, and comprises a PET (polyethylene terephthalate) base material, and the upper surface of the PET base material is sequentially provided with a first waterproof layer, a drying layer, a moistureproof layer, an anti-reflection layer, a wear-resistant layer, a hydrophobic layer and a dustproof film. And a second waterproof layer and an adhesive layer are sequentially arranged on the lower surface of the PET base material.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic sealing films, in particular to a plastic sealing film with good waterproof and moisture-proof performance. Background Art

[0002] Plastic film is the most common composite film in our daily life. It is made of a transparent substrate coated with a layer of hot-melt adhesive. It is a colorless, transparent, and glossy film with good mechanical properties, optical properties, electrical properties, thermal properties, and chemical resistance. Plastic film is widely used to protect various paper documents such as identity cards, pictures, color photos, cards, and business cards.

[0003] For example, a Chinese patent with publication number CN212199098U discloses a high-transparency plastic film, comprising a base layer, a first nano-titanium dioxide film layer is arranged on the upper surface of the base layer, a moisture-proof layer is arranged on the upper surface of the first nano-titanium dioxide film layer, a metal foil laser layer is arranged on the upper surface of the moisture-proof layer, a color printing layer is arranged on the upper surface of the metal foil laser layer, a polyimide layer is arranged on the upper surface of the color printing layer, a semi-crystalline polyester is arranged between the base layer and the first nano-titanium dioxide film layer, and a second nano-titanium dioxide film layer is arranged at both ends of the plastic film body; the polyester imide layer has higher heat resistance, flexibility and transparency, the first nano-titanium dioxide film layer makes the plastic film have excellent gloss and transparency, greatly improves the light transmittance, and the semi-crystalline polyester makes the plastic film have higher light reflection ability and transparency.

[0004] The plastic sealing film disclosed in this patent only ensures the transparency of the plastic sealing film, but has no other protective functions, such as moisture-proof, waterproof, anti-tampering, etc., which will cause losses to users. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the defects of the existing technical problems and provide a plastic sealing film with good waterproof and moisture-proof performance, which has good waterproof and moisture-proof performance and has the advantages of corrosion resistance, aging resistance and high transparency.

[0006] In order to solve the above technical problems, the technical solution of the utility model is: a plastic sealing film with good waterproof and moisture-proof performance, comprising a PET substrate, the upper surface of the PET substrate is sequentially provided with a first waterproof layer, a drying layer, a moisture-proof layer, an anti-permeability layer, a wear-resistant layer, a hydrophobic layer and a dust-proof film, and the lower surface of the PET substrate is sequentially provided with a second waterproof layer and an adhesive layer.

[0007] Furthermore, the first waterproof layer and the second waterproof layer are polypropylene films covering the upper and lower surfaces of the PET substrate, with a thickness of 100-120 um.

[0008] Furthermore, the drying layer is made of a highly water-absorbent resin and has a thickness of 30-50 um.

[0009] Furthermore, the moisture-proof layer is a polytetrafluoroethylene film layer with a thickness of 300um.

[0010] Furthermore, the anti-reflection layer is a nano titanium dioxide film layer.

[0011] Furthermore, the wear-resistant layer is an acrylic or silicone coating applied on the upper surface of the anti-reflection layer.

[0012] Furthermore, the hydrophobic layer is a lotus leaf-like super-hydrophobic polymer material sprayed on the upper surface of the wear-resistant layer.

[0013] Furthermore, the dustproof film is a highly transparent PE protective film.

[0014] Furthermore, the adhesive layer is an EVA film.

[0015] By adopting the above technical solution, the utility model has the following beneficial effects:

[0016] 1. The first waterproof layer and the second waterproof layer are respectively arranged on the upper and lower surfaces of the PET substrate to effectively prevent the penetration of water or moisture, keep the PET substrate dry and have strong moisture-proof performance;

[0017] 2. Set up a drying layer, the plastic film has drying properties, further improves the waterproof effect, and is highly practical;

[0018] 3. The moisture-proof layer is a polytetrafluoroethylene film layer, which not only ensures the waterproof and moisture-proof performance of the plastic sealing film, but also makes it corrosion-resistant and aging-resistant;

[0019] 4. The anti-reflection layer can improve the transparency of the plastic film;

[0020] 5. The hydrophobic layer can prevent water molecules from penetrating;

[0021] 6. The dust-proof film plays a role in dust prevention and protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the plastic sealing film with good waterproof and moisture-proof performance of the utility model.

[0023] Description of the drawings: 1. PET substrate; 2. first waterproof layer; 3. drying layer; 4. moisture-proof layer; 5. anti-reflection layer;

[0024] 6. Wear-resistant layer; 7. Hydrophobic layer; 8. Dust-proof film; 9. Second waterproof layer; 10. Adhesive layer. DETAILED DESCRIPTION

[0025] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

[0026] like Figure 1 As shown, in this embodiment, a plastic sealing film with good waterproof and moisture-proof properties is provided, including a PET substrate 1, the upper surface of the PET substrate 1 is sequentially provided with a first waterproof layer 2, a drying layer 3, a moisture-proof layer 4, an anti-permeability layer 5, a wear-resistant layer 6, a hydrophobic layer 7 and a dust-proof film 8, and the lower surface of the PET substrate 1 is sequentially provided with a second waterproof layer 9 and an adhesive layer 10.

[0027] like Figure 1 As shown, in this embodiment, the first waterproof layer 2 and the second waterproof layer 9 are polypropylene films covering the upper and lower surfaces of the PET substrate 1, with a thickness of 100-120um. The polypropylene film effectively prevents the penetration of water or moisture, keeps the PET substrate 1 dry, and has strong moisture-proof performance.

[0028] like Figure 1 As shown, in this embodiment, the drying layer 3 is made of a highly absorbent resin with a thickness of 30-50 um. Polyacrylic acid is used in this solution, which has a series of advantages such as low production cost, simple process, high production efficiency, strong water absorption capacity, and long product shelf life. The plastic sealing film proposed in this solution has drying performance, further improves the waterproof effect, and is highly practical.

[0029] like Figure 1 As shown, in this embodiment, the moisture-proof layer 4 is a polytetrafluoroethylene film layer with a thickness of 300um. Polytetrafluoroethylene has the smallest surface tension among solid materials, and its surface is smooth and does not adhere to any substance. At the same time, it also has a series of excellent performances such as high temperature resistance, low temperature resistance, corrosion resistance, oxidation resistance, and atmospheric aging resistance. While ensuring the waterproof and moisture-proof performance of the plastic film, it also has the advantages of corrosion resistance and aging resistance.

[0030] like Figure 1 As shown, in this embodiment, the transmittance-enhancing layer 5 is a nano titanium dioxide film layer. Nano titanium dioxide can absorb ultraviolet rays, reflect and scatter ultraviolet rays, and can also transmit visible light. It has a good light-transmitting effect, can improve the transparency of the plastic film, and has anti-wire, antibacterial, self-cleaning and anti-aging properties.

[0031] like Figure 1 As shown, in this embodiment, the wear-resistant layer 6 is an acrylic or silicone coating applied to the upper surface of the anti-reflection layer 5. Specifically, the wear-resistant layer 6 in this embodiment adopts silicone coating. Compared with acrylic acid, silicone is green and environmentally friendly, non-toxic and odorless, easy and safe to use, and has good elongation and good tensile strength.

[0032] like Figure 1As shown, in this embodiment, the hydrophobic layer 7 is a lotus leaf-like super-hydrophobic polymer material sprayed on the upper surface of the wear-resistant layer 6, which can prevent water molecules from penetrating.

[0033] like Figure 1 As shown, in this embodiment, the dust-proof film 8 is a highly transparent PE protective film.

[0034] like Figure 1 As shown, in this embodiment, the PET substrate 1, the first waterproof layer 2, the drying layer 3, the moisture-proof layer 4, the permeability-enhancing layer 5, the wear-resistant layer 6, the hydrophobic layer 7, the second waterproof layer 9 and the adhesive layer 10 are all bonded together by an adhesive, and a dustproof film 8 covers the surface of the hydrophobic layer 7. The dustproof film 8 can be peeled off before use, and the dustproof film 8 plays a role in dustproof and protection.

[0035] like Figure 1 As shown, in this embodiment, the adhesive layer 10 is an EVA film. The EVA film has high transparency and high adhesion and can be applied to various interfaces. It also has good durability and can resist high temperature, moisture, ultraviolet rays, and the like.

[0036] The utility model provides a plastic sealing film with good waterproof and moisture-proof performance, which has the advantages that: a first waterproof layer 2 and a second waterproof layer 9 are respectively arranged on the upper and lower surfaces of a PET substrate 1, which effectively prevent the penetration of water or moisture, etc., keep the PET substrate 1 dry and have strong moisture-proof performance; a drying layer 3 is arranged, the plastic sealing film has a drying performance, further improves the waterproof effect, and has strong practicality; the moisture-proof layer 4 is a polytetrafluoroethylene film layer, which ensures the waterproof and moisture-proof performance of the plastic sealing film while also making it corrosion-resistant and aging-resistant; the anti-reflection layer 5 can improve the transparency of the plastic sealing film; the hydrophobic layer 7 can prevent water molecules from penetrating; and the dust-proof film 8 plays a role in dust prevention and protection.

[0037] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A plastic sealing film with good waterproof and moisture-proof properties, characterized in that: The invention comprises a PET substrate (1), wherein the upper surface of the PET substrate (1) is provided with a first waterproof layer (2), a drying layer (3), a moisture-proof layer (4), a permeability-enhancing layer (5), a wear-resistant layer (6), a hydrophobic layer (7) and a dust-proof film (8) in sequence, and the lower surface of the PET substrate (1) is provided with a second waterproof layer (9) and an adhesive layer (10) in sequence.

2. The plastic sealing film with good waterproof and moisture-proof performance according to claim 1, characterized in that: The first waterproof layer (2) and the second waterproof layer (9) are polypropylene films covering the upper and lower surfaces of the PET substrate (1) and have a thickness of 100-120 um.

3. The plastic sealing film with good waterproof and moisture-proof performance according to claim 1, characterized in that: The drying layer (3) is made of a highly water-absorbent resin and has a thickness of 30-50 μm.

4. The plastic sealing film with good waterproof and moisture-proof performance according to claim 1, characterized in that: The moisture-proof layer (4) is a polytetrafluoroethylene film layer with a thickness of 300 um.

5. The plastic sealing film with good waterproof and moisture-proof performance according to claim 1, characterized in that: The anti-reflection layer (5) is a nano titanium dioxide film layer.

6. The plastic sealing film with good waterproof and moisture-proof performance according to claim 1, characterized in that: The wear-resistant layer (6) is an acrylic acid or silicone coating applied on the upper surface of the anti-reflection layer (5).

7. The plastic sealing film with good waterproof and moisture-proof performance according to claim 1, characterized in that: The hydrophobic layer (7) is a lotus leaf-like super-hydrophobic polymer material sprayed on the upper surface of the wear-resistant layer (6).

8. The plastic sealing film with good waterproof and moisture-proof performance according to claim 1, characterized in that: The dustproof film (8) is a highly transparent PE protective film.

9. The plastic sealing film with good waterproof and moisture-proof performance according to claim 1, characterized in that: The adhesive layer (10) is an EVA film.

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