High-barrier liquid packaging bag

Abstract

A high-barrier liquid packaging bag is provided with a bag body, the bag body is connected with a bag mouth, the edge, connected with the bag mouth, of the bag body extends towards the bag mouth to form a bag mouth seal, the bag mouth seal seals the bag mouth inside, and the bag body is made of shading high-barrier materials. Light is shielded, so that the characters of contents contained in the bag body can be kept stable; due to high barrier, the air-tight seal of the bag body is enhanced, and a better sealing effect is achieved; and the shading and sealing performance can be further improved by compounding multiple layers of shading high-barrier materials.

Description

Technical Field

[0001] The utility model relates to the field of liquid packaging bags, in particular to a high-barrier liquid packaging bag. Background Art

[0002] Liquid packaging bags can be used to hold liquids, pastes, or solid-liquid mixtures. The bag body and spout of liquid packaging bags are typically made of plastic. Generally, the gaps between plastic molecules in dense plastic materials are small, making it difficult for air molecules to pass through. However, temperature and humidity significantly affect the air permeability of plastic. Generally speaking, the higher the temperature and humidity, the higher the air permeability of the plastic. This is because rising temperature and humidity reduce the crystallinity and orientation of the plastic, increase the distance between molecules, and reduce the density. These factors reduce the barrier properties of the plastic, allowing some gas molecules, especially small molecules, to pass through the plastic. Specifically, in liquid packaging bags, gas molecules can pass through the bag body and spout to the outside. For example, in liquid packaging bags containing hydrogen-rich water, the active ingredient, hydrogen molecules, can pass through the bag body and spout to the outside, reducing or even eliminating its effectiveness.

[0003] Furthermore, since liquid packaging bags are typically made of plastic, which lacks light-shielding properties, the contents are susceptible to damage from sunlight. For example, ultraviolet rays in sunlight can accelerate the decomposition of organic matter. Natural pigments and substances in beverages like wine, beer, and juice can oxidize due to sunlight, causing changes in taste and color. Some pharmaceuticals and cosmetics also need to be stored and used away from light, as light can alter certain ingredients in them, leading to quality degradation. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the deficiencies in the prior art, the utility model provides a high-barrier liquid packaging bag, which solves the problems of insufficient light-shielding and sealing properties of traditional liquid packaging bags.

[0006] (2) Technical solution

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A high-barrier liquid packaging bag is provided with a bag body, the bag body is connected to a bag mouth, the edge where the bag body is connected to the bag mouth extends toward the bag mouth to form a bag mouth seal, the bag mouth seal seals the bag mouth inside, and the bag body is made of light-shielding high-barrier material.

[0009] Preferably, the bag body is composited by multiple layers of light-shielding high-barrier materials.

[0010] Preferably, the light-shielding high-barrier material is aluminum foil.

[0011] Preferably, the sealing edge of the bag mouth is provided with an easy-tear notch.

[0012] (3) Beneficial effects

[0013] The utility model provides a high barrier liquid packaging bag. It has the following beneficial effects:

[0014] By setting the bag body to be a light-shielding high-barrier material and sealing the bag mouth inside, better light-shielding and sealing effects can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the utility model.

[0016] In the figure, 1-bag body, 2-bag mouth, 3-bag mouth seal, 4-easy-tear notch. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] In describing the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in the embodiments of the present invention.

[0019] See also Figure 1 The present invention provides a technical solution: a high-barrier liquid packaging bag comprising a bag body 1 connected to a spout 2. The edge of the bag body 1 connecting the spout 2 extends toward the spout 2 to form a spout seal 3, which seals the spout 2 within. The bag body 1 is made of a light-shielding, high-barrier material. It should be noted that high barrier refers to excellent sealing performance. Because gas may escape from the spout 2, sealing the spout 2 within the spout seal 3 can achieve a better sealing effect.

[0020] See also Figure 1In this embodiment, the bag body 1 is made of multiple layers of light-shielding high-barrier materials. It should be noted that the molded light-shielding high-barrier materials usually have a specific thickness, and by combining multiple layers of light-shielding high-barrier materials together, better light-shielding and sealing effects can be achieved.

[0021] See also Figure 1 In this embodiment, the light-shielding high-barrier material is aluminum foil.

[0022] See also Figure 1 In this embodiment, the edge of the bag mouth seal 3 is provided with an easy-tear notch 4. It should be noted that the bag body can be torn open through the easy-tear notch 3 to expose the bag mouth 2, which can be conveniently opened for use.

[0023] The working principle and use process of the utility model are as follows: when in use, the easy tearing opening 4 is torn open to expose the bag mouth 2, which can be conveniently opened and used through the bag mouth 2; before use, the bag mouth sealing 3 seals the bag mouth 2 inside, which can greatly reduce the sealing deficiency caused by insufficient airtightness of the bag mouth 2; at the same time, since the bag body 1 is made of light-shielding high-barrier material, the light-shielding can keep the contents in the bag body 1 stable, reduce the generation of gas components, further enhance the sealing performance, and make the sealing effect better.

[0024] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all perspectives, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and range of equivalents of the claims be included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0025] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A high barrier liquid packaging bag, characterized in that: A bag body (1) is provided, the bag body (1) is connected to a bag mouth (2), the edge where the bag body (1) is connected to the bag mouth (2) extends toward the bag mouth (2) to form a bag mouth seal (3), the bag mouth seal (3) seals the bag mouth (2) inside, and the bag body (1) is made of a light-shielding high-barrier material.

2. A high barrier liquid packaging bag according to claim 1, characterized in that: The bag body (1) is composited from multiple layers of light-shielding high-barrier materials.

3. A high barrier liquid packaging bag according to any one of claims 1-2, characterized in that: The light-shielding high-barrier material is aluminum foil.

4. The high barrier liquid packaging bag according to claim 1, characterized in that: The edge of the bag mouth seal (3) is provided with an easy-tear notch (4).

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