Novel easy-to-tear pudding cover film
By combining a nylon layer, a water-based ink layer, and a PE sealing layer, the strength and environmental pollution issues of the pudding cover film are solved, achieving a high-strength and environmentally friendly pudding cover film design.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-07
- Publication Date
- 2026-03-06
AI Technical Summary
Existing pudding cover films have low tensile strength and elongation, and high VOC emissions and solvent residues, leading to severe tearing and environmental pollution.
The structure consists of a nylon layer, a water-based ink layer, a solvent-free adhesive layer, and a PE sealing layer. The nylon layer is a single-sided corona-electrode biaxially oriented high-strength polyamide. The water-based ink layer is bonded to the PE sealing layer through the solvent-free adhesive layer. The PE sealing layer is filled with antistatic particles and a slip agent. The solvent-free adhesive method replaces the traditional composite method.
It improves the tensile and elongation strength of the cover film, reduces VOC emissions and solvent residue, reduces environmental pollution, enhances the flexibility and heat resistance of the cover film, and reduces production costs.
Smart Images
Figure CN223972273U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pudding cover film, and in particular to a novel easy-to-remove pudding cover film. Background Technology
[0002] Pudding is a popular dessert with many varieties. It can be served hot or cold, and its texture ranges from soft to firm, depending mainly on the preparation method and ingredients used. The basic ingredients of pudding typically include milk or cream, sugar, eggs (sometimes omitted), and various flavorings such as vanilla extract. Depending on the recipe and regional cultural differences, pudding can also be enhanced with chocolate, caramel, fruit, and other ingredients.
[0003] Pudding lid film is a special film material used to seal pudding containers. It not only needs to ensure the product's airtightness and freshness, but also needs to be easy for consumers to peel off. This lid film is usually made of food-contact materials. However, existing pudding lid films are generally made of polypropylene, which results in low tensile strength and tearing. In addition, the existing pudding lid film has a high VOC emission and solvent residue during production, which to some extent leads to serious environmental pollution.
[0004] Therefore, it is necessary to provide a new type of easy-to-remove pudding cover film to solve the above-mentioned technical problems. Utility Model Content
[0005] To solve the above-mentioned technical problems, this utility model provides a novel easy-to-remove pudding cover film.
[0006] The novel easy-to-open pudding cover film provided by this utility model includes a nylon layer, a water-based ink layer, a solvent-free adhesive layer, and a PE sealing layer. The nylon layer is a single-sided corona-electroplated biaxially oriented high-strength polyamide. The water-based ink layer is transferred onto the nylon layer. The PE sealing layer is an antistatic polyethylene film. The water-based ink layer and the PE sealing layer are bonded together by the solvent-free adhesive layer.
[0007] Preferably, the thickness of the solvent-free adhesive layer is 2 μm, and the amount of adhesive applied is 1.2-1.5 g / m².
[0008] Preferably, the thickness of the PE sealing layer is 30-120μm, and the PE sealing layer includes a PE composite layer, a PE intermediate layer and a PE heat-sealing layer. The bottom of the PE composite layer is connected to the PE intermediate layer, and the bottom of the PE intermediate layer is connected to the PE heat-sealing layer.
[0009] Preferably, both the PE intermediate layer and the PE heat-sealing layer are filled with antistatic particles and slip agents.
[0010] Preferably, the thickness of the nylon layer is 15 μm, and the thickness of the water-based ink layer is 2 μm.
[0011] Preferably, the water-based ink layer is transferred onto the nylon layer using gravure printing technology.
[0012] Compared with related technologies, the novel easy-open pudding cover film provided by this utility model has the following beneficial effects:
[0013] 1. This application uses water-based ink for printing. Compared with ordinary ink, water-based ink not only has significant advantages in function, but also in environmental protection. Compared with ordinary solvent-based ink, water-based ink uses water and alcohol as diluents, resulting in less VOCs volatilization, less residue in the printed sample, and is non-toxic, harmless, non-flammable, and non-explosive, with high safety performance. At the same time, water-based ink has the characteristic of higher homogeneous content, which can be deposited on a thinner ink film. Therefore, compared with solvent-based ink, its coating amount (the amount of ink consumed per unit printing area) is less, thereby saving production costs.
[0014] 2. In this application, the water-based ink layer and the PE sealing layer are combined through a solvent-free adhesive layer. The use of solvent-free adhesive method to replace the traditional composite method can effectively reduce VOC emissions and solvent residue, thereby reducing environmental pollution.
[0015] 3. This utility model uses single-sided corona biaxially oriented high-strength polyamide instead of ordinary polypropylene, which increases the moisture and oxygen barrier capabilities, has higher tensile strength and tensile strength, and also has good heat resistance, cold resistance, oil resistance and organic solvent resistance, excellent wear resistance and puncture resistance, and is relatively soft. Attached Figure Description
[0016] Figure 1 A schematic diagram of the structure of the novel easy-to-remove pudding cover film provided by this utility model;
[0017] Figure 2 for Figure 1 The diagram shows the internal structure of the PE sealing layer.
[0018] The numbers in the diagram are: 1. Nylon layer; 2. Water-based ink layer; 3. Solvent-free adhesive layer; 4. PE sealing layer; 5. PE composite layer; 6. PE intermediate layer; 7. PE heat-sealing layer. Detailed Implementation
[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0020] Please refer to the following: Figures 1-2 ,in, Figure 1 A schematic diagram of the structure of the novel easy-to-remove pudding cover film provided by this utility model; Figure 2 for Figure 1The diagram shows the internal structure of the PE sealing layer.
[0021] In the specific implementation process, such as Figures 1-2 As shown, the composite material includes a nylon layer, a water-based ink layer, a solvent-free adhesive layer, and a PE sealing layer. The nylon layer is a single-sided corona-electroplated biaxially oriented high-strength polyamide. Using single-sided corona-electroplated biaxially oriented high-strength polyamide instead of ordinary polypropylene increases moisture and oxygen barrier capabilities, resulting in higher tensile and elongation strengths. The water-based ink layer is transferred onto the nylon layer using a solvent-free adhesive method instead of the traditional lamination method. During the lamination process, no solvent is required, effectively reducing VOC emissions and solvent residue, thus minimizing environmental pollution. The PE sealing layer is an antistatic polyethylene film. The water-based ink layer and the PE sealing layer are bonded together through the solvent-free adhesive layer. The solvent-free adhesive layer has a thickness of 2 μm and an adhesive application rate of 1.2-1.5 g / m².
[0022] It should be noted that this application uses water-based ink for printing. Compared with ordinary ink, water-based ink not only has significant advantages in function, but also in environmental protection. Compared with ordinary solvent-based ink, water-based ink uses water and alcohol as diluents, resulting in less VOCs volatilization, less residue in the printed sample, and is non-toxic, harmless, non-flammable, and non-explosive, with high safety performance. At the same time, water-based ink has a higher content of homogeneous materials, which can be deposited on a thinner ink film. Therefore, compared with solvent-based ink, its coating amount (the amount of ink consumed per unit printing area) is less, thereby saving production costs.
[0023] The thickness of the PE sealing layer is 30-120μm, and it is made of special particle material through blown film process. The PE sealing layer includes a PE composite layer, a PE intermediate layer and a PE heat-sealing layer. The bottom of the PE composite layer is connected to the PE intermediate layer, and the bottom of the PE intermediate layer is connected to the PE heat-sealing layer.
[0024] Both the PE intermediate layer and the PE heat-sealing layer are filled with antistatic particles and slip agents. By adding slip agents, the performance of the cover film can be improved, the material surface can be made smoother, the coefficient of friction can be reduced, making it easier to peel off and remove, and the dust resistance of the film can be enhanced. At the same time, the coefficient of friction can be kept below 0.15 mm. The cover film and the cup body form a "cohesive peeling" method, and the sealing line is eliminated. The peeling force is controlled between 15-20 N / 15 mm. It is a material with good flexibility, tear resistance and high temperature resistance.
[0025] The nylon layer has a thickness of 15μm, and the water-based ink layer has a thickness of 2μm. The water-based ink layer is transferred onto the nylon layer using gravure printing technology. The water-based ink layer has significant advantages in terms of gloss, weather resistance, heat resistance, water resistance, chemical resistance, and pollution resistance. It also has the advantages of being safe, non-toxic, harmless, and reducing environmental pollution.
[0026] Comparison table of heat-sealing strength of ordinary film and film of this application at different temperatures:
[0027]
[0028] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.
[0029] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A novel pudding cover film which is easy to peel, characterized by, The application relates to a nylon layer, a water-based ink layer, a solvent-free adhesive layer and a PE sealing layer, the nylon layer is a single-sided corona bidirectional tensile high-strength polyamide, the water-based ink layer is transferred on the nylon layer, the PE sealing layer is an antistatic polyethylene film, and the water-based ink layer and the PE sealing layer are combined through the solvent-free adhesive layer.
2. The novel easy open pudding cover film according to claim 1, characterized in that, The thickness of the solvent-free adhesive layer is 2 mu m, and the gumming amount is 1.2-1.5 g / square meter.
3. The novel easy open pudding cover film according to claim 2, wherein, The thickness of the PE sealing layer is 30-120 mu m, the PE sealing layer comprises a PE composite layer, a PE intermediate layer and a PE heat sealing layer, the bottom of the PE composite layer is connected with the PE intermediate layer, and the bottom of the PE intermediate layer is connected with the PE heat sealing layer.
4. The novel easy open pudding cover film according to claim 3, wherein, The PE intermediate layer and the PE heat sealing layer are both filled with antistatic particle materials and slip agents.
5. The novel easy open pudding cover film according to claim 4, wherein, The thickness of the nylon layer is 15 mu m, and the thickness of the water-based ink layer is 2 mu m.
6. The novel easy open pudding cover film according to claim 5, wherein, The water-based ink layer is transferred on the nylon layer through a gravure printing technology.