Nuclear track membrane spontaneous controlled atmosphere patch for fresh keeping of fruit and vegetable box and fruit and vegetable box

Abstract

The utility model belongs to the technical field of food packaging, and particularly relates to a nuclear track membrane spontaneous type controlled atmosphere patch for fresh keeping of a fruit and vegetable box and the fruit and vegetable box. The spontaneous controlled atmosphere patch of the nuclear track membrane for fresh keeping of the fruit and vegetable box comprises a nuclear track membrane layer, an inner protection layer and an outer protection layer are arranged on the two sides of the nuclear track membrane layer respectively and are of a net structure, a plurality of annular adhesive layers are arranged on the side, away from the nuclear track membrane layer, of the inner protection layer, and the outer protection layer is arranged on the side, away from the nuclear track membrane layer, of the outer protection layer. Each annular adhesive layer is a single adhesive layer, each single adhesive layer is made of the same adhesive, and adjacent single adhesive layers are made of different adhesives. The modified atmosphere patch is of a three-layer structure, so that the refreshing time of fruits and vegetables can be prolonged; the fruit and vegetable box adhesive has a good bonding effect with various fruit and vegetable boxes made of different box materials, and is convenient and fast to use.

Description

Technical Field

[0001] This utility model belongs to the field of food packaging technology, and in particular relates to a self-generating modified atmosphere patch with a core-pore membrane for preserving fruits and vegetables and a fruit and vegetable box. Background Technology

[0002] With rising living standards and increased health awareness, fruits and vegetables, as an important part of our daily diet, are receiving increasing attention for their freshness and shelf life. Traditional fruit and vegetable packaging methods often fail to effectively extend their shelf life, leading to problems such as rotting and spoilage during transportation and storage, thus affecting their quality and safety. Therefore, developing an efficient fruit and vegetable packaging technology is particularly important.

[0003] Existing fruit and vegetable packaging technologies mainly focus on simple sealing using materials such as foam boxes, plastic wrap, and cardboard boxes. These materials have limitations in terms of environmental friendliness, breathability, humidity control, and gas exchange. Fruits and vegetables respire during storage, producing carbon dioxide and consuming oxygen. Traditional packaging materials often cannot meet the gas exchange needs of fruits and vegetables, resulting in inadequate inhibition of respiration and accelerated aging and spoilage.

[0004] To address the aforementioned issues, breathable membrane materials have been increasingly introduced into fruit and vegetable packaging in recent years. Breathable membranes effectively regulate the gas composition inside the packaging, maintaining suitable oxygen and carbon dioxide concentrations, thereby extending the shelf life of fruits and vegetables. However, existing breathable membranes still have some shortcomings in practical applications. They are typically manufactured separately by specialized companies as products with an adhesive layer, which is then adhered to the packaging box. Different packaging box materials require different adhesives to achieve optimal adhesion. Therefore, currently, the packaging box material must be determined before producing the breathable membrane, leading to manufacturers constantly needing to change and adjust their production lines. Thus, a breathable membrane product adaptable to packaging boxes of different materials is needed. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a self-generating modified atmosphere patch with a core-pore membrane for preserving fruits and vegetables and a fruit and vegetable box.

[0006] To achieve the above objectives, the technical solution adopted is:

[0007] One of the objectives of this utility model is to provide a self-generating modified atmosphere patch with a core-pore membrane for preserving fruits and vegetables, comprising a core-pore membrane layer, an inner protective layer and an outer protective layer respectively provided on both sides of the core-pore membrane layer, the inner and outer protective layers having a mesh structure, and a plurality of annular adhesive layers provided on the side of the inner protective layer away from the core-pore membrane layer, each of the annular adhesive layers being a single adhesive layer, each of the single adhesive layers being the same type of adhesive, and adjacent single adhesive layers using different types of adhesive.

[0008] The beneficial effects of adopting the above technical solution are as follows: the uniform and precise microporous structure of the nucleopore membrane is conducive to fine-tuning gas exchange, ensuring that fruits and vegetables maintain suitable oxygen and carbon dioxide concentrations during storage and transportation; it has high air permeability, which can quickly balance the gas concentration inside and outside the box; it has good selectivity, which can adjust the gas composition inside the box; it is durable and ensures long-term stable performance; thus extending the shelf life of fruits and vegetables and reducing the risk of rot and spoilage; both the inner and outer protective layers are mesh structures, which ensure air permeability while protecting the nucleopore membrane from damage and effectively resisting external impacts and pressures; multiple adhesives ensure that the self-generated modified atmosphere patch of the nucleopore membrane for fruit and vegetable box preservation has at least one layer of adhesive with good adhesion to the box material, ensuring the firmness of the application; the self-generated modified atmosphere patch of the nucleopore membrane for fruit and vegetable box preservation only needs to be pasted, which is convenient and quick.

[0009] Based on the above technical solution, the present invention can be further improved as follows:

[0010] Preferably, the outermost ring of the annular adhesive layer is further provided with a mixed adhesive layer, which is composed of multiple adhesives arranged alternately.

[0011] Preferably, the various adhesives are adapted to fruit and vegetable boxes made of different box materials, including various plastic adhesives, paper adhesives, glass adhesives, etc.

[0012] The beneficial effects of adopting the above-mentioned preferred technical solution are as follows: if the outermost layer is a single adhesive layer, it may not adhere well to the box body. For example, if the outermost layer is a single adhesive layer that is suitable for cardboard boxes, but the box body is a plastic box, the adhesion of the outermost single adhesive layer to the plastic box is not very good, which will lead to edge lifting. The mixed adhesive layer is located on the outermost side, which can solve the problem of edge lifting after the breathable film is pasted on the fruit and vegetable box.

[0013] Preferably, the multiple annular adhesive layers adopt a concentric ring structure, which can provide more uniform adhesion, ensure a tight bond between the film and the packaging box, prevent the penetration of air and moisture, and improve the sealing and protection of the packaging.

[0014] Preferably, the inner and outer protective layers are nylon mesh.

[0015] The beneficial effects of adopting the above-mentioned preferred technical solution are that the nylon mesh has high strength and wear resistance, which improves the durability and service life of the breathable membrane.

[0016] Preferably, the nuclear pore membrane layer and the inner protective layer, as well as the nuclear pore membrane layer and the outer protective layer, are connected by an adhesive, with the connection points located at the edges of each layer.

[0017] The advantages of adopting the above-mentioned preferred technical solution are: the annular adhesive layer improves the bonding effect between the layers, and its location at the edge avoids the internal breathable area, thus ensuring breathability.

[0018] Preferably, the outer contour of the nuclear pore membrane layer is smaller than the outer contour dimensions of the inner and outer protective layers, the nuclear pore membrane layer is sandwiched between the inner and outer protective layers, and the inner and outer protective layers are fixed together by means of ultrasonic welding or adhesive bonding.

[0019] The beneficial effect of adopting the above-mentioned preferred technical solution is that it also provides a technical solution in which the nuclear pore membrane layer does not need to be glued and is sandwiched between the inner protective layer and the outer protective layer.

[0020] The second objective of this utility model is to provide a fruit and vegetable box, including a box body, wherein the box body is provided with ventilation holes, and the ventilation holes are covered with the self-generating modified atmosphere patch of the core pore membrane for preserving fruit and vegetable boxes. Attached Figure Description

[0021] Figure 1 This is a cross-sectional view of the self-generated modified atmosphere patch with a perforated membrane for preserving fruits and vegetables in the fruit and vegetable box according to this utility model.

[0022] Figure 2 This is a schematic diagram of the structure of the inner protective layer of this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the nuclear pore membrane layer of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the outer protective layer of this utility model;

[0025] The reference numerals in the attached figures are as follows: 1. Nuclear pore membrane layer; 2. Inner protective layer; 3. Outer protective layer; 4. First single adhesive layer; 5. Second single adhesive layer; 6. Third single adhesive layer; 7. Mixed adhesive layer; 701. First adhesive region; 702. Second adhesive region; 703. Third adhesive region; 8. Fourth adhesive region. Detailed Implementation

[0026] The present invention will be described below with reference to examples. The examples are only used to explain the present invention and are not intended to limit the scope of the present invention.

[0027] In the description of this utility model, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0028] 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 according to the specific circumstances.

[0029] like Figures 1-4 As shown, a self-generating modified atmosphere patch with a core-pore membrane for preserving fruits and vegetables includes a core-pore membrane layer 1. An inner protective layer 2 and an outer protective layer 3 are respectively provided on both sides of the core-pore membrane layer 1. The inner protective layer 2 and the outer protective layer 3 have a mesh structure. On the side of the inner protective layer 2 away from the core-pore membrane layer 1, there are multiple annular adhesive layers. Each annular adhesive layer is a single adhesive layer, and each single adhesive layer uses the same type of adhesive. Adjacent single adhesive layers use different types of adhesives.

[0030] In a preferred embodiment, the outermost ring of the annular adhesive layer is further provided with a mixed adhesive layer 7, which is composed of multiple adhesives arranged alternately.

[0031] In one optional embodiment, the various adhesives are adapted to fruit and vegetable boxes made of different box materials, including various plastic adhesives, paper adhesives, glass adhesives, etc.

[0032] Multiple ring-shaped adhesive layers are arranged in a concentric ring structure.

[0033] In this embodiment, the inner protective layer 2 and the outer protective layer 3 are nylon mesh.

[0034] In an optional embodiment, the nuclear pore membrane layer 1 and the inner protective layer 2, as well as the nuclear pore membrane layer 1 and the outer protective layer 3, are connected by an adhesive. The connection points are located at the edges of each layer, forming an annular adhesive layer, which is the fourth adhesive region 8. Figure 1This illustration shows a hybrid adhesive layer 7 and three single adhesive layers. From the inside out, the three single adhesive layers are: a first single adhesive layer 4, a second single adhesive layer 5, and a third single adhesive layer 6. The first single adhesive layer 4 uses adhesive A, which has good adhesion to plastics; the second single adhesive layer 5 uses adhesive B, which has good adhesion to paper; and the third single adhesive layer 6 uses adhesive C, which has good adhesion to glass. Figure 2 As shown, the mixed adhesive layer 7 is divided into multiple regions, including a first adhesive region 701 of adhesive A, a second adhesive region 702 of adhesive B, and a third adhesive region 703 of adhesive C, which are alternately combined into a ring.

[0035] In an optional embodiment, the outer contour of the nuclear pore membrane layer 1 is smaller than the outer contour dimensions of the inner protective layer 2 and the outer protective layer 3, the nuclear pore membrane layer 1 is sandwiched between the inner protective layer 2 and the outer protective layer 3, and the inner protective layer 2 and the outer protective layer 3 are fixed together by ultrasonic welding or adhesive bonding.

[0036] This utility model also provides a fruit and vegetable box, including a box body, on which air vents are provided, and the air vents are covered with the self-generating modified atmosphere patch of the core pore membrane for preserving fruit and vegetable boxes.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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 nucleopore membrane spontaneous type atmosphere control patch for preserving fruits and vegetables in a box, characterized by, The nuclear pore membrane layer is provided with an inner protective layer and an outer protective layer on both sides, the inner protective layer and the outer protective layer are net structures, the side of the inner protective layer away from the nuclear pore membrane layer is provided with a plurality of annular adhesive glue layers, each annular adhesive glue layer is a single adhesive glue layer, each single adhesive glue layer is the same kind of adhesive glue, and adjacent single adhesive glue layers adopt different kinds of adhesive glue.

2. The nucleopore membrane spontaneous type gas control patch for preserving fruits and vegetables in the fruit and vegetable box according to claim 1, wherein The outermost circle of the annular adhesive glue layer is further provided with a mixed adhesive glue layer, and the mixed adhesive glue layer is formed by alternately arranging a plurality of kinds of adhesive glue.

3. The nucleopore membrane spontaneous type gas control patch for preserving fruits and vegetables in the fruit and vegetable box according to claim 2, wherein The plurality of annular adhesive glue layers adopt a concentric ring structure.

4. The nucleopore membrane spontaneous type gas control patch for preserving fruits and vegetables in the fruit and vegetable box according to claim 1, wherein The inner protective layer and the outer protective layer are nylon nets.

5. The nucleopore membrane spontaneous type gas control patch for preserving fruits and vegetables in the fruit and vegetable box according to claim 1, wherein The nuclear pore membrane layer and the inner protective layer and the outer protective layer are connected through an adhesive, and the connecting points are located at the edges of the layers.

6. The nucleopore membrane spontaneous type gas control patch for preserving fruits and vegetables in the fruit and vegetable box according to claim 1, wherein The outer contour of the nuclear pore membrane layer is smaller than the outer contour size of the inner protective layer and the outer protective layer, the nuclear pore membrane layer is clamped between the inner protective layer and the outer protective layer, and the inner protective layer and the outer protective layer are fixed together based on ultrasonic welding or adhesion.

7. A fruit and vegetable box, characterized in that The box is provided with a breathable hole, and the breathable hole is covered with the fruit and vegetable box fresh-keeping nuclear pore membrane self-generation type modified atmosphere patch according to any one of claims 1-6.

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