Multi-layer composite high-barrier nylon sterile bag

Abstract

The utility model relates to the technical field of sterile bags, and discloses a multilayer composite high-barrier nylon sterile bag which is composed of an outer layer, a buffer layer, a reinforcing layer, a barrier layer and an inner layer, the outer layer is made of polypropylene materials, and the outer layer has good weather resistance and printing applicability; the buffer layer is made of foamed polyethylene and can effectively absorb impact force, insulate heat, protect the product and maintain the temperature stable; the reinforcing layer is made of high-strength nylon, so that the overall strength and wear resistance are enhanced; the barrier layer is made of ethylene-vinyl alcohol copolymer, is extremely low in gas permeability and prevents gas from entering and exiting; the inner layer is made of food-grade polyethylene, is free of pollution and prevents other layers from being eroded when making direct contact with a product, the multi-layer composite structure overcomes the defects of a traditional package in the aspects of barrier performance and sterility maintenance, the product in the bag can be effectively protected, the shelf life is prolonged, and the high requirements of food, medicine, chemical engineering and other industries for high-end product package are met; good application prospects are realized.

Description

Technical Field

[0001] This utility model relates to the field of aseptic bag technology, specifically a multi-layer composite high-barrier nylon aseptic bag. Background Technology

[0002] In industries such as food, pharmaceuticals, and chemicals, the requirements for product packaging are becoming increasingly stringent. Not only do packaging materials need to have good barrier properties to prevent the intrusion of oxygen, moisture, and other substances that could affect product quality, but they also need to ensure the sterility of the packaging to avoid microbial contamination.

[0003] Traditional packaging materials often fall short in terms of barrier properties and sterility maintenance, making it difficult to meet the packaging needs of high-end products. Nylon materials have a certain strength and barrier properties, but nylon alone cannot achieve the ideal high barrier effect and has defects in maintaining a sterile environment.

[0004] Therefore, this utility model provides a multi-layer composite high-barrier nylon aseptic bag to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a multi-layer composite high-barrier nylon aseptic bag, which solves the aforementioned problems.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a multi-layer composite high-barrier nylon sterile bag, comprising a sterile bag body, the sterile bag body comprising an outer layer, a buffer layer fixedly connected to the inner side of the outer layer, a reinforcing layer fixedly connected to the inner side of the buffer layer, a barrier layer fixedly connected to the inner side of the reinforcing layer, and an inner layer fixedly connected to the inner side of the barrier layer.

[0007] Preferably, the outer layer is made of polypropylene material.

[0008] Preferably, the buffer layer is made of foamed polyethylene material.

[0009] Preferably, the reinforcing layer is made of high-strength nylon material.

[0010] Preferably, the barrier layer is made of ethylene-vinyl alcohol copolymer material.

[0011] Preferably, the inner layer is made of food-grade polyethylene material.

[0012] Beneficial effects

[0013] This invention provides a multi-layer composite high-barrier nylon aseptic bag. Compared with the prior art, it has the following advantages:

[0014] 1. This multi-layer composite high-barrier nylon aseptic bag has a cushioning layer made of foamed polyethylene material, which can effectively absorb external impact and protect the products inside the bag from collision and squeezing damage. At the same time, its heat insulation performance helps to maintain the temperature stability of the products inside the bag, greatly extending the product's shelf life.

[0015] 2. This multi-layer composite high-barrier nylon aseptic bag features an ethylene-vinyl alcohol copolymer barrier layer with extremely low gas permeability, preventing external gases from entering and bag contents from escaping, thus ensuring product quality. The inner layer is made of food-grade polyethylene, ensuring no contamination in direct contact with the product and preventing the product from corroding other layers, thus ensuring product safety. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a diagram of the internal structure of this utility model;

[0018] Figure 2 This is an external structural diagram of the present invention.

[0019] In the diagram: 1. Outer layer; 2. Buffer layer; 3. Reinforcing layer; 4. Barrier layer; 5. Inner layer; 6. Sterile bag body. Detailed Implementation

[0020] It should be noted that in the description of the embodiments of this application, the terms "front," "rear," "left," "right," "up," "down," 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 application 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 application. The terms "installation," "connection," and "linking" 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 direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0021] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0022] Reference Figures 1 to 2This application provides a multi-layer composite high-barrier nylon sterile bag, including a sterile bag body 6. The sterile bag body 6 includes an outer layer 1, a buffer layer 2 fixedly connected to the inner side of the outer layer 1, a reinforcing layer 3 fixedly connected to the inner side of the buffer layer 2, a barrier layer 4 fixedly connected to the inner side of the reinforcing layer 3, and an inner layer 5 fixedly connected to the inner side of the barrier layer 4.

[0023] In an optional embodiment, the outer layer 1 is made of polypropylene material.

[0024] It should be noted that polypropylene has good weather resistance and printability, can remain stable in the external environment, and is easy to print product information and markings. The thickness of the outer layer is 0.08-0.12mm.

[0025] In an optional embodiment, the buffer layer 2 is made of foamed polyethylene material.

[0026] It should be noted that foamed polyethylene has good cushioning properties, which can absorb external impacts and protect the products inside the bag from damage caused by collisions and squeezing. At the same time, foamed polyethylene also has certain heat insulation properties, which helps to maintain the temperature stability of the products inside the bag. The thickness of the cushioning layer is 0.2-0.3mm.

[0027] In an optional embodiment, the reinforcing layer 3 is made of high-strength nylon material.

[0028] It should be noted that nylon material has good mechanical strength and wear resistance, which can enhance the overall strength of the sterile bag and prevent it from being damaged by external forces during handling and storage. The thickness of the nylon reinforcement layer is 0.1-0.2mm.

[0029] In an optional embodiment, the barrier layer 4 is made of an ethylene-vinyl alcohol copolymer material.

[0030] It should be noted that ethylene-vinyl alcohol copolymer has extremely high gas barrier properties, with very low permeability to gases such as oxygen and carbon dioxide. It can effectively prevent external gases from entering the bag, and at the same time prevent the odor and volatile components of the product inside the bag from escaping. The thickness of the barrier layer is 0.02-0.05mm.

[0031] In an optional embodiment, the inner layer 5 is made of food-grade polyethylene material.

[0032] It should be noted that food-grade polyethylene material has good flexibility and chemical stability, allowing it to come into direct contact with the product inside the bag without contaminating it. It also effectively prevents the product from corroding other layers. The thickness of the inner layer is 0.05-0.1mm.

[0033] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0034] Working Principle: When an external impact is applied to the aseptic bag, the outer layer 1 (polypropylene material) first absorbs part of the impact. Then, the buffer layer 2 (foamed polyethylene material) takes effect, absorbing and dispersing the impact force through its elastic structure, protecting the internal structure. The reinforcing layer 3 (high-strength nylon material), with its excellent mechanical strength and abrasion resistance, provides overall strength support for the aseptic bag, preventing damage from external forces. The barrier layer 4 (ethylene-vinyl alcohol copolymer material) tightly blocks gases such as oxygen and carbon dioxide, preventing gas exchange. The inner layer 5 (food-grade polyethylene material) is in direct contact with the product, using its flexibility to fit the product, and its chemical stability ensures it does not contaminate the product and prevents the product from corroding other layers, thus achieving comprehensive protection and storage of the product inside the bag.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, 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.

[0036] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-layer composite high-barrier nylon sterile bag, comprising a sterile bag body (6), characterized in that: The sterile bag body (6) includes an outer layer (1), a buffer layer (2) is fixedly connected to the inner side of the outer layer (1), a reinforcing layer (3) is fixedly connected to the inner side of the buffer layer (2), a barrier layer (4) is fixedly connected to the inner side of the reinforcing layer (3), and an inner layer (5) is fixedly connected to the inner side of the barrier layer (4).

2. The multi-layer composite high-barrier nylon sterile bag according to claim 1, characterized in that: The outer layer (1) is made of polypropylene.

3. The multi-layer composite high-barrier nylon aseptic bag according to claim 1, characterized in that: The buffer layer (2) is made of foamed polyethylene material.

4. The multi-layer composite high-barrier nylon aseptic bag according to claim 1, characterized in that: The reinforcing layer (3) is made of high-strength nylon material.

5. The multi-layer composite high-barrier nylon aseptic bag according to claim 1, characterized in that: The barrier layer (4) is made of ethylene-vinyl alcohol copolymer material.

6. The multi-layer composite high-barrier nylon aseptic bag according to claim 1, characterized in that: The inner layer (5) is made of food-grade polyethylene material.

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