Food packaging film with high-barrier aluminized layer

Abstract

The utility model discloses a food packaging film with a high-barrier aluminized layer, which belongs to the technical field of food packaging films and comprises a bag body, an opening is arranged on the right side of the bag body, and the bag body comprises a printing layer, a wear-resistant layer, a barrier layer, a high-temperature-resistant layer and a fresh-keeping antibacterial layer which are sequentially stacked. The barrier layer comprises an outer high-barrier aluminum laminated film layer, an aluminum foil layer and an inner high-barrier aluminum laminated film layer which are sequentially arranged from outside to inside. Through the structural design of the barrier layer, the outer high-barrier aluminized film layer, the aluminum foil layer and the inner high-barrier aluminized film layer, the outer high-barrier aluminized film layer and the inner high-barrier aluminized film layer are combined with the aluminum foil layer to form the barrier layer; the defects that the barrier property is reduced due to trace pinholes in the aluminum foil and the barrier property of a single high-barrier coating film is not ideal enough can be avoided, so that the barrier property is improved, the shelf life of the food is prolonged, and the use effect is good.

Description

Technical Field

[0001] This utility model relates to the field of cutting device technology, specifically a food packaging film with a high-barrier aluminum-plated layer. Background Technology

[0002] Currently, puffed foods are a popular snack on the market. These foods are mostly cooked by deep-frying, making them crispy and delicious. Due to their inherent characteristics, they cannot be preserved for long periods under normal conditions. To prevent the packaging from breaking during storage and transportation and affecting product quality, they are mostly preserved using inflatable packaging or boxed packaging.

[0003] This application improves upon the existing technology, in which the packaging materials of puffed food on the market are mostly made of BOPP film and CPP film composite. Although they can meet the requirements of gas-filled packaging for this type of food, they lack sufficient barrier properties and lose the original crisp texture of puffed food after a long storage time, resulting in a shelf life of only a few months for this type of food.

[0004] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a food packaging film with a high-barrier aluminum-coated layer to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a food packaging film with a high-barrier aluminum-plated layer, comprising a bag body, wherein an opening is provided on the right side of the bag body, and the bag body comprises a printing layer, a wear-resistant layer, a barrier layer, a high-temperature resistant layer and a freshness-preserving and antibacterial layer stacked in sequence, wherein the barrier layer comprises an outer high-barrier aluminum-plated film layer, an aluminum foil layer and an inner high-barrier aluminum-plated film layer arranged in sequence from the outside to the inside.

[0007] As a further embodiment of this utility model: the outer high-barrier aluminum-plated film layer and the inner high-barrier aluminum-plated film layer are obtained by vapor deposition of an aluminum layer with a thickness of 200-900A on a polyolefin or polyester substrate with a thickness of 15-35μm, and the aluminum foil layer has a thickness of 5-8μm as a soft aluminum foil barrier layer.

[0008] As a further embodiment of this utility model: the printed layer is a PET film layer or a pearlescent OPP film layer, and the thickness of the printed layer is 10-15um of an inner high-barrier aluminum-plated film layer.

[0009] As a further embodiment of this invention, the wear-resistant layer is composed of a polyester film.

[0010] As a further embodiment of this invention, the high-temperature resistant layer is mainly composed of cast polypropylene.

[0011] As a further aspect of this utility model: the preservation and antibacterial layer is mainly composed of chitosan and an aluminum film layer.

[0012] This utility model has the following beneficial effects:

[0013] (1) Through the structural design of barrier layer, outer high barrier aluminum film layer, aluminum foil layer and inner high barrier aluminum film layer, the barrier layer is formed by combining the outer high barrier aluminum film layer and the inner high barrier aluminum film layer with the aluminum foil layer. This can avoid the defects of reduced barrier performance caused by micro-pinholes in aluminum foil and the insufficient barrier performance of single high barrier film film, thereby improving the barrier performance and extending the shelf life of this type of food. It has good performance and solves the problem that the packaging materials of puffed food on the market are mostly composed of BOPP film and CPP film. Although they can meet the requirements of gas-filled packaging of this type of food, they lose the original crispy taste of puffed food after a long storage time due to insufficient barrier performance, resulting in the shelf life of this type of food usually only a few months.

[0014] (2) Through the cooperation of the printing layer, wear-resistant layer, high temperature resistant layer and freshness preservation and antibacterial layer, the printing layer can increase the aesthetics of the bag. The wear-resistant layer is mainly composed of polyester film, which makes the bag have excellent mechanical properties, high rigidity, hardness and toughness, good puncture resistance, friction resistance, high and low temperature resistance, chemical resistance, oil resistance, air tightness and aroma retention. The high temperature resistant layer is mainly composed of cast polypropylene, which makes the bag have good barrier properties, softness and uniform thickness. It can withstand high temperature cooking and low temperature heat sealing, which can extend the shelf life of food and increase its aesthetics. The freshness preservation and antibacterial layer is mainly composed of chitosan and aluminum film layer, which makes the bag have good preservation and antibacterial effects. Attached Figure Description

[0015] Figure 1 This is a partial three-dimensional schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a top view of a partial structure of the present invention;

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of the present invention;

[0018] Figure 4 This is a schematic diagram of a partial internal structure of the barrier layer of this utility model.

[0019] In the diagram: 1. Bag body; 2. Opening; 3. Printed layer; 4. Wear-resistant layer; 5. Barrier layer; 6. High-temperature resistant layer; 7. Freshness-preserving and antibacterial layer; 8. Outer high-barrier aluminized film layer; 9. Aluminum foil layer; 10. Inner high-barrier aluminized film layer. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of this utility model in any way.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] It should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0024] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Please see Figure 1-4The present invention provides an embodiment of a food packaging film with a high-barrier aluminum-plated layer, comprising a bag body 1, an opening 2 on the right side of the bag body 1, and the bag body 1 comprising a printing layer 3, a wear-resistant layer 4, a barrier layer 5, a high-temperature resistant layer 6, and a fresh-keeping and antibacterial layer 7 stacked sequentially. The printing layer 3 is a PET film layer or a pearlescent OPP film layer, and the thickness of the printing layer 3 is 10-15 μm, which is the thickness of the inner high-barrier aluminum-plated film layer. The wear-resistant layer 4 is composed of polyester film, the high-temperature resistant layer 6 is mainly composed of cast polypropylene, and the fresh-keeping and antibacterial layer 7 is mainly composed of chitosan and an aluminum film layer.

[0026] Specifically, such as Figure 1 , Figure 2 and Figure 3 As shown, in use, by combining the outer high-barrier aluminum-coated film layer 8 and the inner high-barrier aluminum-coated film layer 10 with the aluminum foil layer 9 to form the barrier layer 5, the defects of reduced barrier performance caused by micro-pinholes in the aluminum foil and the insufficient barrier performance of a single high-barrier coated film can be avoided, thereby improving the barrier performance and extending the shelf life of this type of food. It has a good effect and solves the problem that most puffed food packaging materials on the market are made of BOPP film and CPP film composite. Although they can meet the requirements of gas-filled packaging for this type of food, their barrier performance is insufficient, and after a long storage time, they lose the original crispy taste of puffed food, resulting in a shelf life of only a few months for this type of food.

[0027] The barrier layer 5 comprises an outer high-barrier aluminum-plated film layer 8, an aluminum foil layer 9, and an inner high-barrier aluminum-plated film layer 10 arranged sequentially from the outside to the inside. The outer high-barrier aluminum-plated film layer 8 and the inner high-barrier aluminum-plated film layer 10 are obtained by vapor deposition of an aluminum layer with a thickness of 200-900 Å on a polyolefin or polyester substrate with a thickness of 15-35 μm. The aluminum foil layer 9 is a soft aluminum foil with a thickness of 5-8 μm, which is the barrier layer.

[0028] Specifically, such as Figure 3 and Figure 4 As shown, during use, the printing layer 3 enhances the aesthetics of the bag body 1. The wear-resistant layer 4, mainly composed of polyester film, provides excellent mechanical properties to the bag body 1, including high rigidity, hardness, and toughness, as well as good puncture resistance, abrasion resistance, high and low temperature resistance, chemical resistance, oil resistance, airtightness, and aroma retention. The high-temperature resistant layer 6, mainly composed of cast polypropylene, provides the bag body 1 with good barrier properties, softness, and uniform thickness, allowing it to withstand high-temperature cooking and low-temperature heat sealing, thus extending the shelf life of food and increasing its aesthetic appeal. The preservation and antibacterial layer 7, mainly composed of chitosan and aluminum film, provides the bag body 1 with excellent preservation and antibacterial effects.

[0029] Working principle: In this application, by combining an outer high-barrier aluminized film layer 8 and an inner high-barrier aluminized film layer 10 with an aluminum foil layer 9 to form a barrier layer 5, the defects of reduced barrier performance caused by micro-pinholes in the aluminum foil and the insufficient barrier performance of a single high-barrier film can be avoided, thereby improving the barrier performance and extending the shelf life of this type of food. The effect is good. Secondly, the printing layer 3 enhances the aesthetics of the bag body 1. The wear-resistant layer 4, mainly composed of polyester film, makes the bag body 1 more durable. It has excellent mechanical properties, high rigidity, hardness and toughness, good puncture resistance, abrasion resistance, high and low temperature resistance, chemical resistance, oil resistance, airtightness and aroma retention. Through the setting of the high temperature resistant layer 6, which is mainly composed of cast polypropylene, the bag body 1 has good barrier properties, softness and uniform thickness. It can withstand high temperature cooking and low temperature heat sealing, which can extend the shelf life of food and increase its appearance. Through the setting of the freshness preservation and antibacterial layer 7, which is mainly composed of chitosan and aluminum film layer, the bag body 1 has a good preservation and antibacterial effect.

[0030] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. At the same time, the electrical components mentioned in this application are all connected to an external power supply and control switch when in use. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art, which is common knowledge in the field. Therefore, this utility model will not explain the control method and circuit connection in detail. Moreover, the external controller mentioned in the specification can play a control role for the electrical components mentioned in this article, and the external controller is a conventional known device.

[0031] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above are only preferred embodiments of this utility model. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this utility model, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without modification, should all be considered within the protection scope of this utility model.

Claims

1. A food packaging film with a high-barrier aluminum-coated layer, comprising a bag body (1), characterized in that: The bag body (1) has an opening (2) on the right side. The bag body (1) includes a printing layer (3), a wear-resistant layer (4), a barrier layer (5), a high-temperature resistant layer (6), and a freshness-preserving and antibacterial layer (7) stacked in sequence. The barrier layer (5) includes an outer high-barrier aluminum-plated film layer (8), an aluminum foil layer (9), and an inner high-barrier aluminum-plated film layer (10) arranged in sequence from the outside to the inside.

2. The food packaging film with a high-barrier aluminum-coated layer according to claim 1, characterized in that: The outer high-barrier aluminum-plated film layer (8) and the inner high-barrier aluminum-plated film layer (10) are obtained by vapor deposition of an aluminum layer with a thickness of 200-900A on a polyolefin or polyester substrate with a thickness of 15-35µm. The aluminum foil layer (9) is a soft aluminum foil with a thickness of 5-8µm as the barrier layer.

3. The food packaging film with a high-barrier aluminum-coated layer according to claim 1, characterized in that: The printed layer (3) is a PET film layer or a pearlescent OPP film layer, and the thickness of the printed layer (3) is 10-15um of inner high-barrier aluminum-plated film layer.

4. The food packaging film with a high-barrier aluminum-coated layer according to claim 1, characterized in that: The wear-resistant layer (4) is composed of a polyester film.

5. A food packaging film with a high-barrier aluminum-coated layer according to claim 1, characterized in that: The high-temperature resistant layer (6) is mainly composed of cast polypropylene.

6. A food packaging film with a high-barrier aluminum-coated layer according to claim 1, characterized in that: The preservation and antibacterial layer (7) is mainly composed of chitosan and aluminum film.

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