Breathable PE composite cast film
By designing a breathable PE composite cast film containing a multi-layer structure, the problems of insufficient air permeability and lack of antibacterial function of the existing composite cast film are solved, achieving breathable and sterilizing effects in food packaging, and significantly improving the membrane practicality.
Patent Information
- Application Number
- CN202421212535.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-05-30
AI Technical Summary
The existing composite cast films are insufficiently breathable and lack antibacterial function when packaging food, resulting in the inability to maintain high quality for a long time.
A breathable PE composite cast film is designed, including a corona layer, a cast film layer, a heat sealing layer, an antibacterial core layer, a glue layer, an antioxidant layer, an antibacterial layer, breathable holes, an antibacterial carbon fiber and an antibacterial wrapping layer. Through the combination of these layers, the breathable and sterilizing functions of the membrane are achieved.
While ensuring air permeability, the film can absorb and sterilize the air passing through the breathable holes, significantly improving the effect of the composite cast film in packaging food, preventing food from deteriorating, and enhancing the practicality of the cast film.
Smart Images
Figure CN222372452U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of composite cast films, in particular to a breathable PE composite cast film. Background Art
[0002] Composite cast film is a multi-layer film manufactured through a specific process. It is usually composed of different types of plastics, such as polypropylene (CPP), polyethylene (PE), etc. These plastic layers can be compounded together through co-extrusion casting technology to form a film material with excellent performance. Composite cast film is widely used in packaging in the fields of food, medicine, textiles, daily necessities, etc. Due to its good transparency, heat sealing performance and flexibility, it has become an ideal choice for packaging materials.
[0003] When the existing composite cast film is used for food packaging, the overall air permeability is insufficient and it does not have antibacterial function, resulting in the composite cast film being unable to ensure that the packaged food can be kept in a high-quality state for a long time. Utility Model Content
[0004] 1. Technical issues to be resolved
[0005] In view of the deficiencies in the prior art, the utility model provides a breathable PE composite cast film, which has the advantages of breathability and sterilization, and solves the problems in the above-mentioned background technology.
[0006] (II) Technical solution
[0007] In order to achieve the above-mentioned purpose of breathable sterilization, the utility model provides the following technical solutions: a breathable PE composite cast film, comprising a film body, the film body comprising a corona layer, a cast film layer is arranged on the top of the corona layer, a heat sealing layer is arranged on the top of the cast film layer, an antibacterial core layer is arranged on the top of the heat sealing layer, a glue layer is arranged on the top of the antibacterial core layer, and an antioxidant layer is arranged on the top of the glue layer.
[0008] An antibacterial layer is arranged on the top of the antioxidant layer, and air holes are arranged on the top of the antibacterial layer. The antibacterial core layer includes antibacterial carbon fibers and core wires, and the antibacterial carbon fibers include core fibers. The outer wall of the core fibers is provided with an antibacterial wrapping layer, which can enable the membrane body to have a breathable and bactericidal structure, thereby ensuring that the membrane body is breathable and at the same time, being able to adsorb and sterilize the air passing through the air holes, thereby greatly improving the effect of the composite cast film in packaging food, avoiding the situation where the cast film cannot be sterilized when breathable, resulting in deterioration of the packaged food, and further improving the practicability of the cast film.
[0009] Preferably, a tear-proof strip is provided on one side of the film body, and a cutting line is provided between the film bodies. When the cast film is cut for use, the cutting line provided between adjacent cast films and the structural setting of the tear-proof strip can avoid tearing other parts of the film body in the process of tearing the cast film, reduce damage to the film body, avoid the torn film body affecting normal use, reduce unnecessary waste, and effectively improve the use effect.
[0010] Preferably, the antibacterial core layer is cross-woven by antibacterial carbon fibers and core wires, and the antibacterial core layer is bonded to the antioxidant layer by a glue layer, which can adsorb and sterilize the air passing through the air holes, greatly improving the effect of the composite cast film when packaging food.
[0011] Preferably, the antibacterial wrapping layer is coated on the outer wall of the core fiber, and the antibacterial carbon fiber is coated with the core fiber and the antibacterial wrapping layer, which can adsorb and sterilize the air passing through the air holes, greatly improving the effect of the composite cast film when packaging food.
[0012] Preferably, the air holes are densely arranged at equal intervals on the antibacterial layer, and the air holes are circular air holes, which can make the film body have an air-permeable structure and improve the effect of the composite cast film when packaging food.
[0013] Preferably, the antibacterial wrapping layer is a nanosilver coating and the core fiber is a PAN carbon fiber, which can make the membrane body have a breathable and bactericidal structure, thereby ensuring that the membrane body is breathable while adsorbing and sterilizing the air passing through the air holes, greatly improving the effect of the composite cast film when packaging food.
[0014] Preferably, the antibacterial layer is connected to the anti-oxidation layer by gluing the layer, and the glue layer is a hot-melt glue layer, which can improve the firmness of the overall connection of the membrane body, thereby increasing its service life.
[0015] (III) Beneficial effects
[0016] Compared with the prior art, the utility model provides a breathable PE composite cast film, which has the following beneficial effects:
[0017] 1. The breathable PE composite cast film can make the film body have a breathable and bactericidal structure through the antibacterial core layer, antioxidant layer, antibacterial layer, air permeability, antibacterial carbon fiber, core wire, core fiber and antibacterial wrapping layer, so that while ensuring the breathability of the film body, the air passing through the air permeability can be adsorbed and sterilized, which greatly improves the effect of the composite cast film in packaging food, avoids the situation where the cast film cannot be sterilized when breathable, resulting in deterioration of the packaged food, and further improves the practicability of the cast film.
[0018] 2. The breathable PE composite cast film can avoid tearing other parts of the film in the process of tearing the cast film through the tear-proof strip and the cutting line when the cast film is cut for use. The cutting line set between adjacent cast films and the structural setting of the tear-proof strip can reduce the damage of the film body, avoid the torn film body affecting normal use, reduce unnecessary waste, and effectively improve the use effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0020] Figure 2 For this utility model Figure 1 Enlarged view of point A in the middle;
[0021] Figure 3 This is a schematic diagram of the antibacterial core structure of the utility model;
[0022] Figure 4 This is a schematic diagram of the antibacterial carbon fiber structure of the utility model.
[0023] In the figure: 1. Film body; 2. Tear-proof strip; 3. Cutting line; 4. Corona layer; 5. Cast film layer; 6. Heat sealing layer; 7. Antibacterial core layer; 8. Glue layer; 9. Anti-oxidation layer; 10. Antibacterial layer; 11. Breathable holes; 12. Antibacterial carbon fiber; 13. Core wire; 14. Core fiber; 15. Antibacterial wrapping layer. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] Example 1
[0026] The preferred embodiment of the breathable PE composite cast film provided by the utility model is as follows Figures 1 to 4 As shown: a breathable PE composite cast film, including a film body 1, the film body 1 includes a corona layer 4, a cast film layer 5 is arranged on the top of the corona layer 4, a heat sealing layer 6 is arranged on the top of the cast film layer 5, an antibacterial core layer 7 is arranged on the top of the heat sealing layer 6, a glue layer 8 is arranged on the top of the antibacterial core layer 7, and an antioxidant layer 9 is arranged on the top of the glue layer 8.
[0027] An antibacterial layer 10 is arranged on the top of the antioxidant layer 9, and an air hole 11 is arranged on the top of the antibacterial layer 10. The antibacterial core layer 7 includes antibacterial carbon fibers 12 and core wires 13. The antibacterial carbon fibers 12 include core fibers 14. The outer wall of the core fiber 14 is provided with an antibacterial wrapping layer 15, which can enable the membrane body 1 to have a breathable and sterilization structure, thereby ensuring that the membrane body 1 is breathable while adsorbing and sterilizing the air passing through the air hole 11, thereby greatly improving the effect of the composite cast film in packaging food, avoiding the situation where the cast film cannot be sterilized when it is breathable, resulting in deterioration of the packaged food, and further improving the practicability of the cast film.
[0028] In this embodiment, a tear-proof strip 2 is provided on one side of the membrane body 1, and a cutting line 3 is provided between the membrane body 1. When the cast film is cut for use, the cutting line 3 provided between adjacent cast films and the tear-proof strip 2 can avoid tearing other parts of the membrane body in the process of tearing the cast film, reduce damage to the membrane body 1, avoid the torn membrane body 1 affecting normal use, reduce unnecessary waste, and effectively improve the use effect.
[0029] Example 2
[0030] Based on Example 1, a preferred embodiment of the breathable PE composite cast membrane provided by the present invention is as follows Figures 1 to 4 As shown: the antibacterial core layer 7 is cross-woven by antibacterial carbon fibers 12 and core wires 13, and the antibacterial core layer 7 is bonded and connected to the antioxidant layer 9 by a glue layer 8, which can absorb and sterilize the air passing through the air holes 11, greatly improving the effect of the composite cast film when packaging food.
[0031] In this embodiment, the antibacterial wrapping layer 15 is coated on the outer wall of the core fiber 14, and the antibacterial carbon fiber 12 is coated by the core fiber 14 and the antibacterial wrapping layer 15, which can adsorb and sterilize the air passing through the air hole 11, greatly improving the effect of the composite cast film when packaging food.
[0032] Furthermore, the air holes 11 are densely arranged at equal intervals on the antibacterial layer 10, and the air holes 11 are circular air holes, which can make the film body 1 have a breathable structure, thereby improving the effect of the composite cast film when packaging food.
[0033] Furthermore, the antibacterial wrapping layer 15 is a nano-silver coating, and the core fiber 14 is a PAN carbon fiber, which can make the membrane body 1 have a breathable and bactericidal structure, so that while ensuring the breathability of the membrane body 1, the air passing through the air hole 11 can be adsorbed and sterilized, greatly improving the effect of the composite cast film when packaging food.
[0034] In addition, the antibacterial layer 10 is bonded and connected to the anti-oxidation layer 9 via the glue layer 8, and the glue layer 8 is a hot-melt glue layer, which can improve the firmness of the overall connection of the membrane body 1, thereby increasing its service life.
[0035] During use, when the membrane body 1 needs to be torn, the cutting line 3 set between the membrane body 1 makes it easy for the user to tear the membrane body 1 without the inconvenience of using other auxiliary tools or manual tearing. At the same time, the anti-tear strips 2 set on both sides of the cutting line 3 can avoid tearing to other parts and affecting normal use when tearing the membrane body 1. At the same time, the air holes 11 set on the antibacterial layer 10 can make the membrane body 1 breathable and play a preliminary antibacterial role. At the same time, an antibacterial core layer 7 is set in the membrane body 1. The antibacterial core layer 7 is composed of antibacterial carbon fiber 12, core wire 13, core fiber 14 and antibacterial wrapping layer 15. It can sterilize the incoming air while being breathable to prevent food quality deterioration during ventilation.
[0036] To sum up, the breathable PE composite cast film can make the film body 1 have a breathable and sterilization structure, so that while ensuring the breathability of the film body 1, it can adsorb and sterilize the air passing through the air holes 11, which greatly improves the effect of the composite cast film in packaging food. At the same time, when the cast film is cut and used, the cutting line 3 set between adjacent cast films and the anti-tear strip 2 are structurally set to avoid tearing other parts of the film in the process of tearing the cast film, thereby reducing unnecessary waste.
[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A breathable PE composite cast film, comprising a film body (1), characterized in that: The film body (1) comprises a corona layer (4), a cast film layer (5) is arranged on the top of the corona layer (4), a heat seal layer (6) is arranged on the top of the cast film layer (5), an antibacterial core layer (7) is arranged on the top of the heat seal layer (6), a glue layer (8) is arranged on the top of the antibacterial core layer (7), and an anti-oxidation layer (9) is arranged on the top of the glue layer (8); An antibacterial layer (10) is arranged on the top of the anti-oxidation layer (9), and a ventilation hole (11) is arranged on the top of the antibacterial layer (10). The antibacterial core layer (7) comprises antibacterial carbon fibers (12) and core wires (13), and the antibacterial carbon fibers (12) comprise core fibers (14), and the outer wall of the core fibers (14) is provided with an antibacterial wrapping layer (15).
2. A breathable PE composite cast membrane according to claim 1, characterized in that: A tear-proof strip (2) is provided on one side of the film body (1), and a cutting line (3) is provided in the middle of the film body (1).
3. The breathable PE composite cast membrane according to claim 1, characterized in that: The antibacterial core layer (7) is arranged by cross-weaving the antibacterial carbon fibers (12) and the core wires (13), and the antibacterial core layer (7) is bonded and connected to the anti-oxidation layer (9) via a glue layer (8).
4. The breathable PE composite cast membrane according to claim 1, characterized in that: The antibacterial wrapping layer (15) is disposed on the outer wall of the core fiber (14) and the antibacterial carbon fiber (12) is disposed on the outer wall of the core fiber (14) and the antibacterial wrapping layer (15) is disposed on the outer wall of the core fiber (14).
5. The breathable PE composite cast membrane according to claim 1, characterized in that: The air holes (11) are densely arranged at equal intervals on the antibacterial layer (10), and the air holes (11) are circular air holes.
6. The breathable PE composite cast membrane according to claim 1, characterized in that: The antibacterial wrapping layer (15) is a nano silver coating, and the core fiber (14) is a PAN carbon fiber.
7. The breathable PE composite cast membrane according to claim 1, characterized in that: The antibacterial layer (10) is bonded and connected to the anti-oxidation layer (9) via a glue layer (8), and the glue layer (8) is a hot-melt glue layer.