Food packaging with fresh-keeping function

Abstract

The utility model discloses a food packaging with fresh -keeping function, including the packaging bag body, the top of packaging bag body is provided with the open structure, and the outer surface both sides of packaging bag body are provided with the fresh -keeping structure, the packaging bag body includes the outer surface layer of outside and the inner surface layer of inside, the outer surface layer and inner surface layer are provided with intermediate barrier layer no.

Description

Technical Field

[0001] This utility model relates to the field of food packaging technology, and in particular to a food packaging with preservation function. Background Technology

[0002] Food packaging refers to the general term for wrapping, containing, and decorating food using specific materials, containers, or auxiliary materials according to certain technical methods in order to protect food, facilitate storage and transportation, and promote sales. Its core is to balance food safety, convenience, and commodity value throughout the entire process of food production and consumption. In the food packaging process, different foods have different packaging requirements. For example, when storing foods with preservation functions, there are requirements for preservation and storage packaging, such as packaging bags with preservation effects. However, some conventional packaging bags have a relatively simple and simple structure. Although they can be used for packaging, their overall resistance to external impact and oxygen barrier performance is not high. Moreover, most of them are transparent, which has poor light protection effect. Therefore, their overall preservation performance for food is limited and cannot guarantee the freshness of food for a long time. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a food packaging with preservation function.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a food packaging with preservation function, comprising a packaging bag body, wherein the top of the packaging bag body is provided with an opening structure, and both sides of the outer surface of the packaging bag body are provided with preservation structures. The packaging bag body includes an outer outer layer on the outside and an inner inner layer on the inside, with an intermediate barrier layer one and an intermediate barrier layer two respectively provided between the outer outer layer and the inner inner layer. The opening structure includes a filling port fixedly connected to the top of the packaging bag body. A threaded connector is provided on the filling port, and a connecting sleeve is provided above the filling port. The bottom of the connecting sleeve is provided with an internal thread groove that is threadedly connected to the threaded connector. A threaded connector is provided at the top of the connecting sleeve. A one-way valve is provided inside the threaded connector. A sealing sleeve is provided above the connecting sleeve, and the bottom of the sealing sleeve is provided with an internal thread groove that is threadedly connected to the threaded connector. The preservation structure includes two outer storage bags fixedly connected to both sides of the outer surface of the packaging bag body. Each of the two outer storage bags has a storage slot, and each of the two storage slots has a preservation ice pack.

[0005] As a further description of the above technical solution: The outermost layer is made of polyethylene terephthalate, the first intermediate barrier layer is made of aluminum foil, the second intermediate barrier layer is made of ethylene-vinyl alcohol copolymer, and the innermost layer is made of polyethylene.

[0006] As a further description of the above technical solution: The outer surfaces of both the connecting sleeve and the sealing sleeve are provided with anti-slip embossed texture.

[0007] As a further description of the above technical solution: The outer storage bag comprises an outer base layer on the outside and an insulation layer on the inside. The outer base layer is made of polyethylene terephthalate, and the insulation layer is made of pearl cotton.

[0008] As a further description of the above technical solution: One end of the outer storage bag is provided with an opening, and a sealing zipper is provided inside the opening.

[0009] As a further description of the above technical solution: The outer surface of the outer storage bag is provided with a spray coating area.

[0010] This utility model has the following beneficial effects: This food packaging with preservation function consists of an outer PET material layer, an aluminum foil middle barrier layer, an EVOH middle barrier layer, and a PE inner surface layer. These layers combine to form a stable food packaging bag structure, ensuring that the entire bag has excellent tensile, tear, and puncture resistance. The structure is not easily broken or damaged, providing safe protection for the stored food. At the same time, the structure also effectively blocks light and oxygen, thus preserving the food inside, extending its freshness, and improving food storage safety. By using external storage bags, storage tanks, and ice packs, temporary storage of foods requiring low-temperature storage can be achieved, thus enhancing the preservation effect, slowing down spoilage, and improving food storage safety. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of a food packaging with preservation function proposed in this utility model. Figure 2 This is a front view of a food packaging with preservation function proposed in this utility model; Figure 3 This utility model proposes a food packaging with preservation function. Figure 2 A magnified view of A in the middle.

[0012] Legend: 1. Packaging bag body; 101. Outer layer; 102. Intermediate barrier layer one; 103. Intermediate barrier layer two; 104. Inner surface layer; 2. Filling port; 3. Threaded connector one; 4. Connecting sleeve; 5. Internal thread groove one; 6. Threaded connector two; 7. One-way valve; 8. Sealing sleeve; 9. Internal thread groove two; 10. Anti-slip ridge; 11. Outer storage bag; 1101. Outer base layer; 1102. Insulation layer; 12. Storage slot; 13. Sealing zipper; 14. Fresh-keeping ice pack; 15. Spray coating area. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0015] Reference Figure 1-3This utility model provides an embodiment of a food packaging with preservation function, comprising a packaging bag body 1. The packaging bag body 1 includes an outer outer layer 101 and an inner inner layer 104. An intermediate barrier layer 102 and an intermediate barrier layer 103 are respectively disposed between the outer outer layer 101 and the inner inner layer 104. The outer outer layer 101 is made of polyethylene terephthalate (PET), a high-strength material with excellent tensile and puncture resistance, providing good protection for the food stored inside. The intermediate barrier layer 102 is made of aluminum foil, which has good light-blocking and oxygen-blocking effects, allowing for safe storage of foods requiring light protection and ensuring their freshness. The intermediate barrier layer 103 is made of ethylene-vinyl alcohol. The copolymer, ethylene-vinyl alcohol copolymer (EVOH), has extremely high oxygen barrier properties, which greatly enhances the food preservation performance of the entire packaging bag. The inner surface layer 104 is made of polyethylene (PE), which can be in film form. It is a polymer material that is non-toxic and has good heat-sealing properties. It comes into direct contact with the food to be packaged, meeting the food storage safety requirements. The various layers of the entire packaging bag body 1 are combined together by adhesive bonding and pressing to form a composite packaging bag structure. This is a common adhesive bonding and pressing process, which will not be elaborated on here. The entire packaging bag has excellent tensile and puncture resistance, which can protect the stored food. At the same time, it can also effectively isolate light and block oxygen, thus providing a good preservation effect for the food stored inside and improving the food storage safety. The top of the packaging bag body 1 has an opening structure, including a filling port 2 fixedly connected to the top of the packaging bag body 1. The filling port 2 is the food filling position of the entire packaging bag and also the subsequent extrusion position of the food. A threaded connector 3 is provided on the filling port 2, and a connecting sleeve 4 is provided above the filling port 2. The bottom of the connecting sleeve 4 is provided with an internal thread groove 5 that is threaded to the threaded connector 3, and a threaded connector 6 is provided on the top of the connecting sleeve 4. A one-way valve 7 is provided inside the threaded connector 6. The function of the one-way valve 7 is to facilitate the venting of the packaging bag after the food filling is completed, ensuring the internal airtightness, thereby preventing oxygen from entering from the opening and affecting the product quality. A sealing sleeve 8 is provided above the connecting sleeve 4, and the bottom of the sealing sleeve 8 is provided with an internal thread groove 9 that is threaded to the threaded connector 6. The threaded connector 6 and the internal thread groove 5 and internal thread groove 9 have the same thread size, so the sealing sleeve 8 can also be directly fitted onto the threaded connector 3. This allows the sealing sleeve 8 to be used to seal the can opening 2 directly without using the one-way valve 7. The thread structure has a certain friction between the teeth, and the Spiral self-locking thread can also be used to ensure the stability of the thread structure after connection and prevent loosening. The outer surfaces of the connecting sleeve 4 and the sealing sleeve 8 are provided with anti-slip ridges 10. The anti-slip ridges 10 ensure the smooth rotation of the connecting sleeve 4 and the sealing sleeve 8 and prevent slipping. The opening structure is not limited to the cylindrical can opening shown in the attached figure. It can also be a long strip opening, which can be closed with a zipper. This is a common opening and sealing structure for some packaging bags, and will not be described in detail here. Both sides of the outer surface of the packaging bag body 1 are provided with a preservation structure. The preservation structure includes an outer storage bag 11 fixedly connected to both sides of the outer surface of the packaging bag body 1. The outer storage bag 11 includes an outer base layer 1101 on the outer side and an insulation layer 1102 on the inner side. The outer base layer 1101 is made of polyethylene terephthalate (PET) and is made of the same material as the outer outer layer 101 of the packaging bag, providing good protective performance. The insulation layer 1102 is made of pearl cotton, which is lightweight, elastic, and has good insulation properties. This design insulates the inner ice pack, reducing the rate of cold air loss and thus achieving long-term low-temperature preservation of the product inside the packaging bag. Each of the two outer storage bags 11 has a storage slot 12, and each of the two storage slots 12 contains a preservation ice pack 14. One end of the outer storage bag 11 has an opening with a sealing zipper 13. The opening is for taking out and placing the ice pack, and the sealing zipper 13 can close the opening. The outer surface of the outer storage bag 11 has a spraying area 15, which is where product information is sprayed.

[0016] Working principle: When using food packaging with preservation function, the food to be stored is injected into the can opening 2 through the filling machine, thus injecting the food into the packaging bag. After injection, the connecting sleeve 4 is tightened onto the threaded connector 3. Excess air in the packaging bag is expelled by squeezing or using an air extraction device. The sealing sleeve 8 is tightened onto the threaded connector 6 to complete the sealing of the opening structure. The preservation ice pack 14 is inserted into the outer storage bag 11, which can contact the packaging bag to preserve the product at low temperature.

[0017] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A food packaging with preservation function, comprising a packaging bag body (1), characterized in that: The top of the packaging bag body (1) is provided with an opening structure, and both sides of the outer surface of the packaging bag body (1) are provided with a preservation structure. The packaging bag body (1) includes an outer outer layer (101) on the outside and an inner inner layer (104) on the inside. An intermediate barrier layer one (102) and an intermediate barrier layer two (103) are respectively provided between the outer outer layer (101) and the inner inner layer (104). The opening structure includes a can opening (2) fixedly connected to the top of the packaging bag body (1), a threaded connector (3) is provided on the can opening (2), and a connecting sleeve (4) is provided above the can opening (2). The bottom of the connecting sleeve (4) is provided with an internal thread groove (5) that is threadedly connected to the threaded connector (3), and the top of the connecting sleeve (4) is provided with a threaded connector (6). A one-way valve (7) is provided inside the threaded connector (6). A sealing sleeve (8) is provided above the connecting sleeve (4), and the bottom of the sealing sleeve (8) is provided with an internal thread groove (9) that is threadedly connected to the threaded connector (6). The preservation structure includes an outer storage bag (11) fixedly connected to both sides of the outer surface of the packaging bag body (1). Each of the two outer storage bags (11) is provided with a storage slot (12), and each of the two storage slots (12) is provided with a preservation ice pack (14).

2. The food packaging with preservation function according to claim 1, characterized in that: The outermost layer (101) is made of polyethylene terephthalate, the first intermediate barrier layer (102) is made of aluminum foil, the second intermediate barrier layer (103) is made of ethylene-vinyl alcohol copolymer, and the innermost layer (104) is made of polyethylene.

3. The food packaging with fresh-keeping function according to claim 1, characterized in that: The outer surfaces of the connecting sleeve (4) and the sealing sleeve (8) are both provided with anti-slip ridges (10).

4. The food packaging with fresh-keeping function according to claim 1, characterized in that: The outer storage bag (11) includes an outer base layer (1101) on the outside and an insulation layer (1102) on the inside. The outer base layer (1101) is made of polyethylene terephthalate, and the insulation layer (1102) is made of pearl cotton.

5. The food packaging with fresh-keeping function according to claim 1, characterized in that: One end of the outer storage bag (11) is provided with an opening, and a sealing zipper (13) is provided inside the opening.

6. The food packaging with fresh-keeping function according to claim 1, characterized in that: The outer surface of the outer storage bag (11) is provided with a spraying area (15).

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