Mildew-proof antibacterial plastic packaging film
The multi-layered anti-mildew and antibacterial plastic sealant, using a combination of polyethylene, aluminum foil, nylon film and PET film, solves the problem of oxidation of printed content, achieving long-term preservation of printed content and anti-oxidation protection of the sealed object.
Patent Information
- Application Number
- CN202520284144.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-21
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-02-21
AI Technical Summary
The printing on existing plastic sealant films is prone to becoming blurred due to oxidation, and current technology cannot effectively slow down this process.
The anti-mildew and antibacterial plastic sealant uses a multi-layer structure, including a base layer, an anti-mildew and antibacterial layer, a printing layer, a gas barrier layer, and a wear-resistant layer. The materials of each layer are polyethylene, aluminum foil, nylon film, and PET film, respectively. The combination of these materials blocks oxygen and moisture, slowing down the oxidation rate of the printed content.
It effectively slows down the oxidation rate of printed content, extends shelf life, and provides secondary anti-oxidation protection for the sealed items, thus improving the preservation effect of the laminating film.
Smart Images

Figure CN223837347U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plastic sealing film technology, and in particular, to an anti-mildew and antibacterial plastic sealing film. Background Technology
[0002] Printed materials, artworks, and decorative items often require long-term preservation to maintain their aesthetic and commercial value. The most common protection method is to cover them with laminating film. To facilitate product promotion, categorization, and improve the appearance of the laminating film, manufacturers print content such as trademarks, classification labels, and graphics on it. Most of the printing on existing laminating films is on the outer surface. Because of prolonged exposure to air, the printed content oxidizes and becomes blurred, affecting the normal use of the laminating film. Some manufacturers also cover the printed content with a transparent film layer. While this provides some air isolation, over time, air can still penetrate the transparent film and come into contact with the printed content, resulting in less than ideal protection. Furthermore, it does not effectively slow down the oxidation rate of the laminated item.
[0003] Therefore, the inventors need to improve the structure of the laminating film to further slow down the oxidation rate of the printed content and extend the normal service life of the laminating film. Utility Model Content
[0004] The technical problem to be solved by this utility model is that, in the prior art, the content printed on the plastic seal film is easily blurred due to oxidation. Based on this, this utility model provides an anti-mildew and antibacterial plastic seal film that can slow down the oxidation rate of the printed content.
[0005] The technical solution adopted by this utility model to solve its technical problem is: an anti-mildew and antibacterial plastic sealant, including a base layer, an anti-mildew and antibacterial layer provided on the upper surface of the base layer, a printing layer provided on the upper surface of the anti-mildew and antibacterial layer, a pattern printed on the upper surface of the printing layer, a gas barrier layer provided on the surface of the printing layer with the pattern, and a wear-resistant layer provided on the upper surface of the gas barrier layer. Both the gas barrier layer and the wear-resistant layer are made of transparent material.
[0006] Furthermore, the base layer is made of polyethylene material.
[0007] Furthermore, an adhesive layer is provided on the lower surface of the base layer, the adhesive layer being made of acrylic adhesive.
[0008] Furthermore, the anti-mildew and antibacterial layer is made of aluminum foil.
[0009] Furthermore, the printed layer is made of polypropylene material.
[0010] Furthermore, the gas barrier layer is a nylon film.
[0011] Furthermore, the wear-resistant layer is a PET film.
[0012] The beneficial effects of this utility model are as follows: The anti-mildew and antibacterial sealing film of this utility model has a gas barrier layer that prevents external gases from penetrating the gas barrier layer and coming into contact with the pattern on the printed layer, thus slowing down the oxidation rate of the pattern and extending the preservation time of the pattern. At the same time, the gas barrier layer can also prevent gases from contacting the surface of the sealed object, providing a primary anti-oxidation effect for the sealed object. The anti-mildew and antibacterial layer set inside the printed layer can further block gases and moisture, further preventing the sealed object from oxidizing and deteriorating, providing a secondary anti-oxidation effect for the sealed object, resulting in good protective effect. Attached Figure Description
[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0014] Figure 1 This is a schematic diagram of the structure of the anti-mildew and antibacterial plastic sealant of this utility model.
[0015] In the diagram: 1. Base layer, 11. Adhesive layer, 2. Anti-mildew and antibacterial layer, 3. Printed layer, 4. Gas barrier layer, 5. Wear-resistant layer. Detailed Implementation
[0016] The present invention will now be described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.
[0017] Please see Figure 1 This utility model provides an anti-mildew and antibacterial plastic sealant, comprising a base layer 1, an anti-mildew and antibacterial layer 2 disposed on the upper surface of the base layer 1, a printing layer 3 disposed on the upper surface of the anti-mildew and antibacterial layer 2, a pattern (not shown) printed on the upper surface of the printing layer 3, a gas barrier layer 4 disposed on the surface of the printing layer 3 with the pattern, and a wear-resistant layer 5 disposed on the upper surface of the gas barrier layer 4. All layers are thin sheet structures, and adjacent layers are bonded together with adhesive. The gas barrier layer 4 and the wear-resistant layer 5 are both made of transparent material, allowing the user to observe the pattern printed on the printing layer 3 through the wear-resistant layer 5 and the gas barrier layer 4. The pattern includes drawings, text, etc., and can be customized according to user needs.
[0018] The base layer 1 is used to bond and fix the object to be sealed. To facilitate bonding, an adhesive layer 11 for bonding to the object is provided on the lower surface of the base layer 1. In this embodiment, the adhesive layer 11 is made of acrylic adhesive. Acrylic adhesive is an emulsion composed of polymer emulsion, adhesive, filler, etc. This adhesive has excellent bonding performance, good weather resistance and transparency, and does not chemically react with the bonded items, thus fully ensuring the performance stability of the bonded surfaces.
[0019] In addition, the base layer 1 is a polyethylene film made of polyethylene material. This material has good toughness, moisture resistance and heat sealing performance. While ensuring that the base layer 1 has good extensibility, it can also effectively prevent moisture penetration and protect the surface of the sealed object from moisture, mold and bacteria growth.
[0020] The anti-mildew and antibacterial layer 2 is made of aluminum foil. Aluminum foil can effectively block gas and moisture, prevent the sealed item from deteriorating, and avoid bacterial growth and rot. In addition, aluminum foil has good light-blocking and air-blocking functions, ensuring that the sealed item is not oxidized and providing good protection for the sealed item.
[0021] The printing layer 3 is made of polypropylene material, which has the characteristics of high transparency, good moisture resistance and good antibacterial properties. In actual production, the printing layer 3 is a polypropylene film made of polypropylene. This film has high flatness, smooth surface and is easy to print on, and is especially suitable for the plastic sealing field that requires printed patterns.
[0022] The gas barrier layer 4 effectively prevents the penetration of gases such as oxygen and carbon dioxide, reducing the contact between the printed pattern on the printing layer 3 and these gases, greatly slowing down the oxidation rate of the pattern and extending its preservation time. In this embodiment, the gas barrier layer 4 is a nylon film. Nylon film has high drawstring strength, can withstand greater pressure and tension, and can be used normally in a temperature range of -40℃ to 120℃, exhibiting good temperature resistance. In addition, nylon film has high transparency, ensuring that the light from the pattern on the printing layer 3 passes through the gas barrier layer 4 and is clearly transmitted outwards.
[0023] In this embodiment, the wear-resistant layer 5 is a PET film, which is a high-performance plastic film with excellent transparency and gloss, providing a good visual effect. In addition, the PET film has good weather resistance and wear resistance, and can maintain stable performance at various temperatures while resisting scratches from external objects, preventing the wear-resistant layer 5 from being easily scratched.
[0024] The anti-mildew and antibacterial sealing film of this utility model has a gas barrier layer 4 that prevents external gases from penetrating and contacting the pattern on the printing layer 3, thus slowing down the oxidation rate of the pattern and extending its preservation time. At the same time, the gas barrier layer 4 also prevents gases from contacting the surface of the sealed object, providing primary anti-oxidation protection. The anti-mildew and antibacterial layer 2, located inside the printing layer 3, further blocks gases and moisture, further preventing the sealed object from oxidizing and deteriorating, providing secondary anti-oxidation protection. The overall protective effect is excellent.
[0025] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.
Claims
1. A mildew-proof and antibacterial plastic sealant, characterized in that: The substrate includes a base layer, an anti-mildew and antibacterial layer on the upper surface of the base layer, a printing layer on the upper surface of the anti-mildew and antibacterial layer, a pattern printed on the upper surface of the printing layer, a gas barrier layer on the surface of the printing layer with the pattern, and a wear-resistant layer on the upper surface of the gas barrier layer. Both the gas barrier layer and the wear-resistant layer are made of transparent material.
2. The anti-mildew and antibacterial sealing film as described in claim 1, characterized in that: The base layer is made of polyethylene material.
3. The anti-mildew and antibacterial plastic sealant as described in claim 2, characterized in that: An adhesive layer is provided on the lower surface of the base layer, and the adhesive layer is made of acrylic glue.
4. The anti-mildew and antibacterial sealing film as described in claim 1, characterized in that: The anti-mildew and antibacterial layer is made of aluminum foil.
5. The anti-mildew and antibacterial sealing film as described in claim 1, characterized in that: The printed layer is made of polypropylene.
6. The anti-mildew and antibacterial sealing film as described in claim 1, characterized in that: The gas barrier layer is a nylon film.
7. The anti-mildew and antibacterial plastic sealant as described in claim 1, characterized in that: The wear-resistant layer is a PET film.