A novel retortable easy tear film

Abstract

The utility model provides a novel resistant cooking easy tear membrane, a novel resistant cooking easy tear membrane includes nylon layer, printing layer, glue compound layer and heat -resistant CPP heat seal layer, one side of nylon layer with one side of printing layer fixed connection, the side away from nylon layer of printing layer with one side of glue compound layer fixed connection, one side of heat -resistant CPP heat seal layer with the side away from printing layer of glue compound layer fixed connection, glue compound layer is used for connecting nylon layer and printing layer with heat -resistant CPP heat seal layer, the utility model uses toughened high temperature resistant cooking CPP membrane instead of ordinary CPP membrane, has increased the softness and tenacity of the film -wrapping, and the leakage rate of the composite film produced is far less than the composite film produced by ordinary CPP film, and the product with higher flexibility will not damage other films when the sharp edges and corners touch other films during production, increase the production efficiency of product, reduce the loss of product in the production or transportation process.

Description

Technical Field

[0001] This utility model relates to the field of cooking film technology, and in particular to a novel cooking-resistant and easy-to-tear film. Background Technology

[0002] A new type of retort-resistant and easy-tear film is a packaging material composited using a special process. It consists of a multi-layer structure, with an outer layer suitable for printing, a middle layer with excellent barrier properties, and an inner layer with good heat-sealing properties and stable safety. This film can withstand high-temperature retort at 100℃ or even 121℃ without deformation or delamination. It is also easy to tear, with a clean tear without debris. It is mainly used for packaging food, pharmaceuticals, and chemical products, protecting the contents during high-temperature processing and making it convenient for consumers to open.

[0003] In existing technologies, traditional retort-resistant easy-tear films often have some processing problems. During production, the opposite edges of the finished product are usually serrated, resulting in sharp edges. During production and subsequent transportation, these sharp edges often collide or come into contact with each other. When these sharp edges touch other finished films, there is a risk of puncturing the film. This can lead to low production efficiency and potentially poor product quality, resulting in losses.

[0004] Therefore, it is necessary to provide a new type of retort-resistant, easy-tear 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-tear film that is resistant to steaming and boiling.

[0006] This utility model provides a novel retort-resistant easy-tear film comprising: a nylon layer, a printed layer, an adhesive composite layer, and a heat-resistant CPP heat-sealing layer. One side of the nylon layer is fixedly connected to one side of the printed layer, the side of the printed layer away from the nylon layer is fixedly connected to one side of the adhesive composite layer, and one side of the heat-resistant CPP heat-sealing layer is fixedly connected to the side of the adhesive composite layer away from the printed layer. The adhesive composite layer is used to connect the nylon layer, the printed layer, and the heat-resistant CPP heat-sealing layer.

[0007] Preferably, the printing layer material is a high-temperature resistant ink layer, and the printing layer is transferred to one side of the nylon layer by gravure printing.

[0008] Preferably, the nylon layer is a surface layer, and the thickness of the nylon layer is 15 μm.

[0009] Preferably, the adhesive composite layer is a solvent-free adhesive composite layer, which connects the nylon layer and the heat-resistant CPP heat-sealing layer.

[0010] Preferably, the amount of adhesive applied to the composite layer is 2.0-3.0 g / m2.

[0011] Preferably, the heat-resistant CPP heat-sealing layer is a PE that can withstand 115℃ cooking, and the thickness of the heat-resistant CPP heat-sealing layer is 75-100μm.

[0012] Compared with related technologies, the novel retort-resistant and easy-tear film provided by this utility model has the following beneficial effects:

[0013] The adhesive composite layer of this product uses solvent-free adhesive, which reduces environmental pollution.

[0014] The heat-resistant CPP heat-sealing layer of this product improves the toughness of the film, has better tensile strength than those currently sold on the market, and reduces the probability of the product having a false seal.

[0015] This invention uses a toughened, high-temperature resistant CPP film instead of a regular CPP film, which increases the softness and toughness of the film. The resulting composite film has a much lower leakage rate than composite films produced with regular CPP film. Furthermore, the high flexibility of the product means that the sharp edges will not damage other films when they come into contact with them during production, thus increasing production efficiency and reducing product losses during production or transportation. Attached Figure Description

[0016] Figure 1 A main body diagram of a novel steam-resistant and easy-tear film provided for this utility model;

[0017] Figure 2 A top view of a novel retortible and easy-tear film provided by this utility model;

[0018] Figure 3 A side cross-sectional view of a novel heat-resistant and easy-tear film provided by this utility model.

[0019] The labels in the diagram are: 1. Nylon layer; 2. Printed layer; 3. Adhesive composite layer; 4. Heat-resistant CPP heat-sealing layer. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Please refer to the following: Figure 1 , Figure 2 as well as Figure 3 ,in, Figure 1 A main body diagram of a novel steam-resistant and easy-tear film provided for this utility model; Figure 2 A top view of a novel retortible and easy-tear film provided by this utility model; Figure 3 A side cross-sectional view of a novel heat-resistant and easy-tear film provided by this utility model.

[0022] In the specific implementation process, such as Figures 1-3 As shown, this utility model provides a novel retort-resistant easy-tear film, comprising: a nylon layer 1, a printed layer 2, an adhesive composite layer 3, and a heat-resistant CPP heat-sealing layer 4. One side of the nylon layer 1 is fixedly connected to one side of the printed layer 2, and the side of the printed layer 2 away from the nylon layer 1 is fixedly connected to the side of the adhesive composite layer 3. One side of the heat-resistant CPP heat-sealing layer 4 is fixedly connected to the side of the adhesive composite layer 3 away from the printed layer 2. The adhesive composite layer 3 is used to connect the nylon layer 1 and the printed layer 2 to the heat-resistant CPP heat-sealing layer 4. The printing layer 2 is made of high-temperature resistant ink. It is transferred to one side of the nylon layer 1 by gravure printing. The nylon layer 1 is the surface layer and has a thickness of 15μm. The adhesive composite layer 3 is a solvent-free adhesive composite layer. The nylon layer 1 and the heat-resistant CPP heat-sealing layer 4 are connected by the adhesive composite layer 3. The amount of adhesive applied to the adhesive composite layer 3 is 2.0-3.0g / m2. The heat-resistant CPP heat-sealing layer 4 is made of PE that can withstand 115℃ boiling. The thickness of the heat-resistant CPP heat-sealing layer 4 is 75-100μm.

[0023] It should be noted that the aforementioned nylon layer 1 has a thickness of 15μm. Nylon material has good mechanical and barrier properties. As the surface layer, nylon layer 1 mainly protects the internal structure, provides a certain strength and toughness, making the film less prone to breakage during use. It also has a certain barrier effect against external oxygen and moisture, ensuring that the quality of the internal product is not affected by the external environment. The printing layer 2 is a high-temperature resistant ink layer. In specific use, the printing layer 2 makes the product packaging aesthetically pleasing and information-transmitting. At the same time, its high-temperature resistance ensures the integrity and clarity of the printed content during heat treatment, without affecting the sale and use of the product. The adhesive composite layer 3 is a solvent-free adhesive composite layer with an adhesive application amount of 2.0-3.0g / m². It is used to connect nylon layer 1 and printing layer 2 to the heat-resistant CPP heat-sealing layer 4. Therefore, the adhesive composite layer 3 plays the role of bonding the materials of each layer, making the entire easy-tear film structure more solid and ensuring that the layers will not easily separate during use. The use of solvent-free adhesives reduces the risk of solvent residue, making them more environmentally friendly and safer. Appropriate adhesive application ensures good bonding results. Furthermore, the solvent-free nature meets modern environmental and food safety requirements, which is significant for applications such as food packaging, enhancing product safety and quality. The heat-resistant CPP heat-sealing layer 4 is a PE material resistant to 115℃ retort cooking, with a thickness of 75-100μm. On one hand, as a heat-sealing layer, it is mainly used to heat-seal the easy-tear film, forming a sealed packaging space to protect the product. On the other hand, its 115℃ retort cooking characteristic allows the packaging to adapt to high-temperature cooking processes, such as packaging foods requiring high-temperature sterilization, where it can withstand the high temperatures during cooking without damage. The appropriate thickness of the heat-resistant CPP heat-sealing layer 4 ensures the strength and heat-sealing performance of the heat-sealing layer. Its retort cooking characteristic expands the application range of easy-tear films, enabling them to meet the packaging needs of products requiring high-temperature processing, thus improving product applicability and market competitiveness.

[0024] 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 retort-resistant and easy-tear film, characterized in that, include: The nylon layer (1), the printed layer (2), the adhesive composite layer (3), and the heat-resistant CPP heat-sealing layer (4) are provided. One side of the nylon layer (1) is fixedly connected to one side of the printed layer (2). The side of the printed layer (2) away from the nylon layer (1) is fixedly connected to one side of the adhesive composite layer (3). One side of the heat-resistant CPP heat-sealing layer (4) is fixedly connected to the side of the adhesive composite layer (3) away from the printed layer (2). The adhesive composite layer (3) is used to connect the nylon layer (1) and the printed layer (2) to the heat-resistant CPP heat-sealing layer (4).

2. The novel retort-resistant and easy-tear film according to claim 1, characterized in that, The material of the printing layer (2) is a high-temperature resistant ink layer, which is transferred to one side of the nylon layer (1) by gravure printing.

3. The novel retort-resistant and easy-tear film according to claim 2, characterized in that, The nylon layer (1) is the surface layer, and the thickness of the nylon layer (1) is 15 μm.

4. The novel retort-resistant and easy-tear film according to claim 3, characterized in that, The adhesive composite layer (3) is a solvent-free adhesive composite layer (3), which connects the nylon layer (1) and the heat-resistant CPP heat-sealing layer (4).

5. The novel retort-resistant and easy-tear film according to claim 4, characterized in that, The amount of adhesive applied to the adhesive composite layer (3) is 2.0-3.0 g / m2.

6. The novel retort-resistant and easy-tear film according to claim 5, characterized in that, The heat-resistant CPP heat-sealing layer (4) is a PE that can withstand 115℃ cooking, and the thickness of the heat-resistant CPP heat-sealing layer (4) is 75-100μm.

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