Cooking-resistant food packaging film
The food packaging film, with its multi-layered structure and micro-convex stripe design, solves the problems of deformation and adhesion after cooking, achieving high-temperature stability and anti-sticking effect.
Patent Information
- Application Number
- CN202520351765.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-03
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-03-03
AI Technical Summary
Existing food packaging films are prone to deformation and adhesion after cooking, affecting food removal and cleanliness.
The film employs a multi-layer structure consisting of an inner layer of cast polypropylene, a barrier layer of aluminum foil, an outer layer of PET, and an anti-stick coating of PTFE. Combined with a micro-convex stripe design, this enhances the film's heat resistance and stability, and prevents adhesion.
Under high-temperature cooking conditions, the food packaging film does not deform and does not stick to the food or container, maintaining structural stability and cleanliness.
Smart Images
Figure CN223791138U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of food packaging film technology, and in particular to a food packaging film that is resistant to steaming and boiling. Background Technology
[0002] Food packaging film is a polymer material used to wrap the surface of food, mainly to isolate the entry of decomposing microorganisms and bacteria and foreign contaminants, and to prevent and prolong the spoilage of food.
[0003] After cooking, existing food packaging films may develop horizontal, vertical, or irregular wrinkles on the packaging substrate, resulting in certain deformation. Under high-temperature cooking conditions, some food packaging films may stick to the food, which can easily lead to damage or contamination of the food when it is removed. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a food packaging film that is resistant to steaming and boiling.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A food packaging film resistant to steaming and boiling includes a food preservation film body. Multiple auxiliary micro-raised stripes are symmetrically and equidistantly arranged on both sides of the inner surface of the food preservation film body, and micro-raised stripe groups are equidistantly arranged between two adjacent auxiliary micro-raised stripes on the inner surface of the food preservation film body.
[0007] The food preservation film body includes an inner layer, a barrier layer, and an outer layer, and the surface of the inner layer is coated with an anti-stick coating.
[0008] Furthermore, in a preferred configuration, the micro-convex stripe group includes cross-shaped micro-convex stripes, horizontal micro-convex stripes, and vertical micro-convex stripes, and the material of the cross-shaped micro-convex stripes, horizontal micro-convex stripes, and vertical micro-convex stripes is cast polypropylene.
[0009] Furthermore, a preferred structure is that the inner layer is made of cast polypropylene and has a thickness of 60-60 μm.
[0010] Furthermore, a preferred structure is that the barrier layer is made of aluminum foil and has a thickness of 8-9 μm.
[0011] Furthermore, a preferred structure is that the outer layer is made of PET and has a thickness of 12-13 μm.
[0012] Furthermore, a preferred structure is that the anti-stick coating is made of PTFE and has a thickness of 0.1-0.2 μm.
[0013] The beneficial effects of this utility model are as follows:
[0014] In this invention, the combination of an inner layer, a barrier layer, an outer layer, an anti-stick coating, and auxiliary micro-raised stripes and micro-raised stripe groups enhances the heat resistance and stability of the food packaging film. It can withstand high-temperature cooking without deformation while preventing the food packaging film from sticking to the food or packaging container. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of a food packaging film resistant to steaming and boiling proposed in this utility model;
[0016] Figure 2 This is an enlarged structural diagram of point A;
[0017] Figure 3 This is a schematic diagram of the internal structure of the food packaging film.
[0018] In the figure: 1. Food packaging film body; 11. Auxiliary micro-raised stripes; 12. Horizontal micro-raised stripes; 13. Cross-shaped micro-raised stripes; 14. Vertical micro-raised stripes; 101. Outer support layer; 102. Barrier layer; 103. Inner layer; 104. Anti-stick coating. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0020] Reference Figure 1-3 A food packaging film resistant to steaming and boiling includes a food preservation film body 1. Multiple auxiliary micro-raised stripes 11 are symmetrically and equidistantly arranged on both sides of the inner surface of the food preservation film body 1, and micro-raised stripe groups are equidistantly arranged between two adjacent auxiliary micro-raised stripes 11 on the inner surface of the food preservation film body 1.
[0021] The food preservation film body 1 includes an inner layer 103, a barrier layer 102, and an outer layer 101, and the surface of the inner layer is coated with an anti-stick coating 104.
[0022] Furthermore, the micro-raised stripe group includes cross micro-raised stripes 13, horizontal micro-raised stripes 12, and vertical micro-raised stripes 14. The cross micro-raised stripes 13, horizontal micro-raised stripes 12, and vertical micro-raised stripes 14 are all made of cast polypropylene. The micro-raised stripe group can enhance the physical strength of the packaging film, making it more resistant to thermal stress and reducing deformation during high-temperature cooking. In addition, the micro-raised stripe group increases the surface area and thickness of the packaging film at the stripe points, providing additional support and helping to maintain the stability of the packaging film.
[0023] Meanwhile, the inner layer 103 is made of cast polypropylene, and its thickness is 60-60μm. Cast polypropylene has good heat-sealing properties and heat resistance. The cast polypropylene of the inner layer 103 is retort-grade CPP, which can withstand high-temperature retorting at 121℃ for 30 minutes. During high-temperature retorting, the cast polypropylene inner layer can maintain the structural stability of the food packaging film, enabling the food packaging film to withstand high-temperature retorting without deformation.
[0024] Meanwhile, the barrier layer 102 is made of aluminum foil, and the thickness of the barrier layer 102 is 8-9μm. The aluminum foil bag can maintain stable performance and good barrier performance in a high temperature environment of 121℃. By using aluminum foil as a barrier layer, it can effectively prevent high temperature from damaging the internal structure of the film body and enhance the heat resistance and stability of its food packaging film.
[0025] Furthermore, the outer layer 101 is made of PET, and the thickness of the outer layer 101 is 12-13μm. PET has the characteristics of high temperature and low temperature resistance, which can maintain the physical stability of the food packaging film during high temperature cooking and make the food packaging film less prone to aging or deformation during cooking.
[0026] It is worth noting that the inner layer 103, the barrier layer 102, and the outer layer 101 are all made of high-temperature resistant materials, and the inner layer 103, the barrier layer 102, and the outer layer 101 are sequentially bonded together with specially ordered high-temperature resistant adhesive.
[0027] Furthermore, the anti-stick coating 104 is made of PTFE, and the thickness of the anti-stick coating 104 is 0.1-0.2μm. PTFE has an extremely low coefficient of friction and excellent lubricity. During high-temperature cooking, the PTFE anti-stick coating can prevent food packaging film from sticking to food or packaging containers.
[0028] In this embodiment, by combining the inner layer 103, the barrier layer 102, the outer layer 101 with the anti-stick coating 104 and the auxiliary micro-raised stripes 11 and micro-raised stripe groups, the heat resistance and stability of the food packaging film can be enhanced. It can withstand high-temperature cooking without deformation, while preventing the food packaging film from sticking to the food or packaging container.
[0029] In this invention, the combination of inner layer 103, barrier layer 102, outer layer 101, anti-stick coating 104, and auxiliary micro-raised stripes 11 and micro-raised stripe groups enhances the heat resistance and stability of the food packaging film. It can withstand high-temperature cooking without deformation while preventing the food packaging film from sticking to the food or packaging container.
[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A food packaging film resistant to steaming and boiling, comprising a food preservation film body (1), characterized in that, The food preservation film body (1) has multiple auxiliary micro-protrusion stripes (11) symmetrically and equidistantly arranged on both sides of its inner surface, and micro-protrusion stripe groups are equidistantly arranged between two adjacent auxiliary micro-protrusion stripes (11) on its inner surface. The food preservation film body (1) includes an inner layer (103), a barrier layer (102), and an outer layer (101), and the surface of the inner layer is coated with an anti-stick coating (104).
2. The food packaging film resistant to steaming and boiling according to claim 1, characterized in that, The micro-convex stripe group includes cross micro-convex stripes (13), horizontal micro-convex stripes (12), and vertical micro-convex stripes (14), and the material of cross micro-convex stripes (13), horizontal micro-convex stripes (12), and vertical micro-convex stripes (14) is cast polypropylene.
3. The food packaging film resistant to steaming and boiling according to claim 1, characterized in that, The inner layer (103) is made of cast polypropylene and has a thickness of 60-60 μm.
4. The food packaging film resistant to steaming and boiling according to claim 1, characterized in that, The barrier layer (102) is made of aluminum foil and has a thickness of 8-9 μm.
5. The food packaging film resistant to steaming and boiling according to claim 1, characterized in that, The outer layer (101) is made of PET and has a thickness of 12-13 μm.
6. The food packaging film resistant to steaming and boiling according to claim 1, characterized in that, The anti-stick coating (104) is made of PTFE and has a thickness of 0.1-0.2 μm.