Fresh-keeping box ventilation structure, self-ventilation sterilization fruit and vegetable fresh-keeping box and fresh-keeping bag

Abstract

The utility model discloses a fresh-keeping box ventilation structure, a self-ventilation sterilization fruit and vegetable fresh-keeping box and a fresh-keeping bag, the fresh-keeping box ventilation structure comprises an annular frame, and two opening ends of the frame are respectively provided with a micropore ventilation layer and a graphene sterilization purification layer; the self-ventilation sterilization fruit and vegetable fresh-keeping box comprises a fresh-keeping box body, and a plurality of fresh-keeping box ventilation structures are arranged on two side plates of the fresh-keeping box body, so that gas exchange can be performed inside and outside the fresh-keeping box body; the self-ventilation sterilization fruit and vegetable fresh-keeping bag comprises a fresh-keeping bag body, and a micropore ventilation layer is installed on one face or two faces of the fresh-keeping bag body, so that gas exchange can be conducted between the inside and the outside of the fresh-keeping bag body. The fresh-keeping box or the fresh-keeping bag is simple in structural design, the defects in the prior art can be overcome, rapid ventilation in the fresh-keeping box or the fresh-keeping bag can be achieved, breeding of bacteria can be killed or inhibited, and the fresh-keeping time of fruits and vegetables is well prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of food packaging, in particular to a fresh-keeping box ventilation structure, a self-ventilating and sterilizing fruit and vegetable fresh-keeping box and a fresh-keeping bag. Background Art

[0002] Existing patents, including Patent No. 202320558797.1, entitled "A Fresh-keeping Box with Self-Regulating Atmosphere Packaging for Fruits Using Nuclear Pore Membrane," and Patent No. 202321705213.5, entitled "A Fresh-keeping Box with Self-Regulating Atmosphere Packaging for Vegetables Using Nuclear Pore Membrane," propose methods for creating various self-regulating ventilation devices, such as fruit and vegetable fresh-keeping boxes and bags, using nuclear pore membrane as the core ventilation material. While these methods address the issue of self-regulating gas flow in fruit and vegetable storage devices and prevent the intrusion of mold and other bacteria from outside the device, they fail to address the problem of mold and other bacteria inside the storage device caused by elevated gas temperature and humidity. Furthermore, existing fresh-keeping box gas exchange materials are limited to microporous nuclear pore membranes. Because nuclear pore membranes require expensive nuclear irradiation or high-energy accelerator equipment for processing, their high processing costs make them difficult to commercialize. By appropriately adjusting the pore size and pore density of microporous materials other than nuclear pore membranes, the goal of self-regulating gas flow can also be achieved. In addition, due to the limitations of processing conditions, nuclear pore membranes can basically only process materials with a thickness of less than 50 microns, which has a certain impact on the thermal insulation of storage devices.

[0003] Thermosetting foods such as steamed buns, dumplings, fried dough sticks, and fried chicken nuggets are springy, crispy, delicious, and fragrant when fresh from the pan. With the rapid development of e-commerce platforms, food delivery has become a major means of delivering fast-food products. Current thermosetting food delivery packaging methods involve packaging the food directly in sealed, insulated paper or plastic bags. This prevents a large amount of water vapor from escaping quickly, causing the food to become soaked by condensed water droplets, resulting in softening, dampness, or sticking, and losing its original chewiness or crispness. Similarly, when hot dishes and foods are quickly sealed and packaged at higher temperatures, the high-temperature water vapor cannot be quickly expelled, causing the food to lose its original crispness and texture, adversely affecting food quality.

[0004] Based on the above reasons, how to design a fresh-keeping box ventilation structure, self-ventilating and sterilizing fruit and vegetable fresh-keeping box and fresh-keeping bag, which can not only solve the disadvantages of the above-mentioned patents, but also quickly ventilate the fresh-keeping box and fresh-keeping bag, and kill or inhibit the growth of bacteria, thereby greatly extending the shelf life of fruits and vegetables. Utility Model Content

[0005] The purpose of the utility model is to provide a fresh-keeping box ventilation structure, a self-ventilating and sterilizing fruit and vegetable fresh-keeping box and a fresh-keeping bag, which have a simple structural design and can solve the disadvantages of the above-mentioned patents, enable rapid ventilation in the fresh-keeping box or fresh-keeping bag, and kill or inhibit the growth of bacteria, thereby greatly extending the shelf life of fruits and vegetables.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the present invention is: a fresh-keeping box ventilation structure, which includes an annular frame, and the two open ends of the frame are respectively equipped with a microporous ventilation layer and a graphene sterilization and purification layer.

[0007] The utility model discloses a fresh-keeping box ventilation structure, wherein the frame is made of plastic material.

[0008] The utility model relates to a ventilation structure for a fresh-keeping box, wherein the microporous ventilation layer comprises a ventilation layer body made of PET, PP, PE, or PC plastic material, the surface of the ventilation layer body is densely covered with micropores, the thickness of the ventilation layer body is 20 to 188 microns, the pore diameter of the micropores is 50 to 300 microns, and the density of the micropores is 25 to 1600 per centimeter. 2 .

[0009] The utility model relates to a ventilation structure for a fresh-keeping box, wherein the thickness of the ventilation layer body is 50 to 100 microns, the aperture of the micropores is 150 to 200 microns, and the density of the micropores is 40 to 100 per centimeter. 2 .

[0010] A self-ventilating sterilizing fruit and vegetable fresh-keeping box comprises a fresh-keeping box body. Two side panels of the fresh-keeping box body are provided with a plurality of fresh-keeping box ventilation structures, so that gas exchange can be carried out inside and outside the fresh-keeping box body.

[0011] The utility model discloses a self-ventilating and sterilizing fresh-keeping box for fruits and vegetables, wherein a plurality of fresh-keeping box ventilation structures are symmetrically arranged on two side plates of the fresh-keeping box body and are located close to the center of the side plates.

[0012] A self-ventilating sterilizing fruit and vegetable fresh-keeping bag comprises a fresh-keeping bag body. One or both sides of the fresh-keeping bag body are provided with a microporous ventilation layer, so that gas exchange can be carried out inside and outside the fresh-keeping bag body.

[0013] The utility model discloses a self-ventilating and sterilizing fresh-keeping bag for fruits and vegetables, wherein the microporous ventilation layer is integrally arranged on the fresh-keeping bag body through a frame.

[0014] The utility model discloses a self-aeration sterilization fruit and vegetable fresh-keeping bag, wherein the microporous aeration layer comprises an aeration layer body made of PET, PP, PE or PC plastic material, the surface of the aeration layer body is densely covered with micropores, the thickness of the aeration layer body is 20-188 microns, the pore size of the micropores is 50-300 microns, and the density of the micropores is 25-1600 per centimeter 2 .

[0015] The utility model discloses a self-aeration sterilization fruit and vegetable fresh-keeping bag, wherein the thickness of the aeration layer body is 50-100 microns, the pore size of the micropores is 150-200 microns, and the density of the micropores is 40-100 per centimeter 2 .

[0016] After the above scheme, the fresh-keeping box aeration structure, the self-aeration sterilization fruit and vegetable fresh-keeping box and the fresh-keeping bag have the following beneficial effects:

[0017] 1. The material thickness, pore size and pore density of the fresh-keeping box aeration structure are reasonably set, which greatly improves the aeration performance of fruits and vegetables, and also has good moisturizing, temperature-keeping and heat-insulating effects. When the fresh-keeping box aeration structure is installed on the fresh-keeping box body, the temperature and humidity in the fresh-keeping box can be ensured, harmful gases such as carbon dioxide, carbon monoxide and ammonia generated in the fresh-keeping box can be quickly discharged, and oxygen in the air outside the fresh-keeping box can be continuously injected into the fresh-keeping box, so that the pollution of fruits and vegetables in the fresh-keeping box is avoided, and the freshness of fruits and vegetables is effectively improved.

[0018] 2. The graphene sterilization and purification layer of the fresh-keeping box aeration structure can kill bacteria and viruses in a pure physical way, can well kill microorganisms such as mold and fungi generated in the fresh-keeping box due to environmental pollution, and can effectively inhibit the reproduction of microorganisms. At the same time, the graphene sterilization and purification layer can effectively degrade harmful gases such as carbon dioxide and ammonia generated in the fresh-keeping box, avoid the deterioration of fruits and vegetables, and prolong the fresh-keeping time of fruits and vegetables. The microporous aeration layer and the graphene sterilization and purification layer are organically combined, which achieves the dual purposes of effective sterilization and automatic aeration, and makes the air environment in the fresh-keeping box cleaner.

[0019] 3. The processing technology of the fresh-keeping box and the fresh-keeping bag is mature and simple, the cost is low, and the processing technology is suitable for large-area popularization and application, and the disadvantages of high processing cost and difficult popularization of nuclear pore membranes are eliminated. DRAWINGS

[0020] Figure 1 It is a three-dimensional exploded structural schematic view of an embodiment of the fresh-keeping box aeration structure of the utility model.

[0021] Figure 2 It is a three-dimensional structural schematic view of an embodiment of the self-aeration sterilization fruit and vegetable fresh-keeping box of the utility model.

[0022] Figure 3This is a schematic diagram of the three-dimensional structure of the second embodiment of the self-ventilating and sterilizing fruit and vegetable fresh-keeping box of the present utility model;

[0023] Figure 4 This is a schematic diagram of the three-dimensional structure of the first embodiment of the self-ventilating and sterilizing fruit and vegetable fresh-keeping bag of the utility model;

[0024] Figure 5 This is a schematic diagram of the three-dimensional structure of the second embodiment of the self-ventilating and sterilizing fruit and vegetable fresh-keeping bag of the present utility model. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0026] like Figure 1 The schematic diagram of the three-dimensional decomposition structure of the embodiment of the ventilation structure of the fresh-keeping box of the present invention is shown, which includes a ring frame 1. The frame 1 of this embodiment adopts a rectangular ring structure, and can also be a circular ring structure. And the frame 1 is made of plastic material. A microporous ventilation layer 2 and a graphene sterilization and purification layer 3 are respectively installed on the left and right open ends of the frame 1. The microporous ventilation layer 2 of this embodiment includes a ventilation layer body 4, and the ventilation layer body 4 is made of plastic materials such as PET, PP, PE, and PC. The surface of the ventilation layer body 4 is densely covered with micropores 5, and the thickness of the ventilation layer body 4 is 20 to 188 microns, preferably 50 to 100 microns; the pore diameter of the micropores 5 is 50 to 300 microns, preferably 150 to 200 microns; the density of the micropores 5 is 25 to 1600 per centimeter 2 , preferably 40 to 100 per cm 2 .

[0027] like Figure 2 The three-dimensional structure diagram of the embodiment of the self-ventilating sterilizing fruit and vegetable fresh-keeping box of the utility model is shown, which includes a fresh-keeping box body 6, and the left and right side panels of the fresh-keeping box body 6 are respectively integrally processed with a plurality of Figure 1 The fresh-keeping box ventilation structure 7 shown in the figure, the fresh-keeping box ventilation structure 7 of this embodiment adopts four, and is arranged on the left and right side plates of the fresh-keeping box body 6 in a left-right symmetrical manner, that is, two fresh-keeping box ventilation structures 7 are respectively provided on the left and right side plates, and are located in the center of the side, so that the inside and outside of the fresh-keeping box body 6 can exchange gas. Of course, the fresh-keeping box ventilation structure 7 can also adopt Figure 3 The ventilation structure of the circular ring frame 1 is shown.

[0028] The production of the self-ventilating sterilizing fruit and vegetable fresh-keeping box includes the following steps:

[0029] (1) Using laser, needle roller and other hole-opening technologies, multiple micropores 5 are opened on plastic materials such as PET, PP, PE, and PC to form a microporous ventilation layer 2;

[0030] (2) The aqueous graphene sterilization purification slurry is prepared with a dry weight of 10 to 40 g / m 2 The graphene is coated on a non-woven fabric material in an amount of 10 ...

[0031] (3) Making a ring-shaped or rectangular plastic frame 1, cutting the microporous ventilation layer 2 made in step (1) and the graphene sterilization and purification layer 3 made in step (2) into the size of the side opening of the frame 1, respectively, and fixing them on the left and right sides of the frame 1, respectively, to make a fresh-keeping box ventilation structure 7;

[0032] (4) The multiple fresh-keeping box ventilation structures 7 prepared in step (3) are integrally processed and arranged on the left and right side panels of the fresh-keeping box body 6 of the fruit and vegetable fresh-keeping box. The multiple fresh-keeping box ventilation structures 7 are symmetrically arranged on the left and right side panels and are located in the center of the side panels. According to the ventilation and sterilization requirements of different fruits and vegetables and the size of the box body, 2 to 8 fresh-keeping box ventilation structures are generally installed symmetrically. In this embodiment, four fresh-keeping box ventilation structures 7 are symmetrically installed on the left and right side panels, so that gas exchange can be carried out inside and outside the fresh-keeping box body 6.

[0033] like Figure 4 The three-dimensional structural diagram of the embodiment of the self-ventilating sterilizing fruit and vegetable fresh-keeping bag of the utility model is shown, which includes a fresh-keeping bag body 8. Two microporous ventilation layers 2 are formed on both sides of the fresh-keeping bag body 8. In this embodiment, the two microporous ventilation layers 2 are both installed on the rectangular frame 1. The microporous ventilation layer 2 is fixed to the open end of the rectangular frame 1, and the frame 1 is fixed to the fresh-keeping bag body 8. Of course, it can also be used as Figure 5 The microporous ventilation layer 2 of the circular frame 1 shown in the figure is provided with two microporous ventilation layers 2 on each side in this embodiment. A microporous ventilation layer 2 with a frame 1 can also be provided on one side of the fresh-keeping bag body 8. This allows gas exchange between the inside and outside of the fresh-keeping bag body 8. The microporous ventilation layer 2 of this embodiment includes a ventilation layer body 4, which is made of plastic materials such as PET, PP, PE, and PC. The surface of the ventilation layer body 4 is densely covered with micropores 5, and the thickness of the ventilation layer body 4 is 20 to 188 microns, preferably 50 to 100 microns; the pore size of the micropores 5 is 50 to 300 microns, preferably 150 to 200 microns; the density of the micropores 5 is 25 to 1600 per centimeter 2 , preferably 40 to 100 per cm 2 .

[0034] The material thickness, pore diameter, and pore density of the fresh-keeping box ventilation structure 7 of the present invention are reasonably set, greatly improving the ventilation performance of fruits and vegetables, while also providing excellent moisture retention, heat preservation, and heat insulation. Installing it on the fresh-keeping box body 6 can maintain the temperature and humidity within the fresh-keeping box, while quickly discharging harmful gases such as carbon dioxide, carbon monoxide, and ammonia, as well as mold generated within the fresh-keeping box. It also allows oxygen from the air outside the fresh-keeping box to be continuously injected into the fresh-keeping box, preventing contamination of the fruits and vegetables inside the fresh-keeping box and effectively improving the freshness of the fruits and vegetables. The graphene sterilization and purification layer 3 of the fresh-keeping box ventilation structure 7 can kill bacteria and viruses in a purely physical manner, effectively killing molds, fungi, and other microorganisms generated by environmental pollution in the fresh-keeping box, effectively inhibiting the reproduction of microorganisms. At the same time, it can effectively degrade harmful gases such as carbon dioxide and ammonia generated in the fresh-keeping box, preventing the deterioration of fruits and vegetables and extending the shelf life of fruits and vegetables. The organic combination of the microporous ventilation layer 2 and the graphene sterilization and purification layer 3 achieves the dual purpose of effective sterilization and automatic ventilation, making the air environment in the fresh-keeping box cleaner. The processing technology of this fresh-keeping box is mature and simple, with low cost, suitable for large-scale promotion and application, eliminating the disadvantages of using nuclear pore membranes with high processing costs and difficulty in promotion. By providing the microporous ventilation layer 2 on the fresh-keeping bag, the inside and outside of the fresh-keeping bag body 8 can effectively and timely discharge water vapor from the packaged content, ensuring the chewy or crisp taste of the food. At the same time, due to the excellent thermal insulation properties of the microporous breathable material, the food can be kept at an optimal eating temperature, improving the taste.

[0035] The above-described embodiments are merely preferred embodiments for the purpose of fully illustrating the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are within the scope of protection of the present invention. The scope of protection of the present invention shall be subject to the claims.

Claims

1. A fresh-keeping box ventilation structure, characterized in that: It comprises an annular frame, wherein two open ends of the frame are respectively provided with a microporous ventilation layer and a graphene sterilization and purification layer; The microporous ventilation layer includes a ventilation layer body made of PET, PP, PE, or PC plastic material. The surface of the ventilation layer body is densely covered with micropores. The pore diameter of the micropores is 50 to 300 microns, and the density of the micropores is 25 to 1600 per centimeter. 2 .

2. The fresh-keeping box ventilation structure according to claim 1, characterized in that: The frame is made of plastic material.

3. The fresh-keeping box ventilation structure according to claim 1, characterized in that: The thickness of the ventilation layer body is 20 to 188 microns.

4. The fresh-keeping box ventilation structure according to claim 3, characterized in that: The thickness of the ventilation layer body is 50-100 microns, the pore diameter of the micropores is 150-200 microns, and the density of the micropores is 40-100 per centimeter. 2 .

5. A self-ventilating and sterilizing fruit and vegetable fresh-keeping box, characterized in that: The fresh-keeping box comprises a fresh-keeping box body, and two side panels of the fresh-keeping box body are provided with a plurality of fresh-keeping box ventilation structures according to any one of claims 1 to 4, so that gas exchange can be performed inside and outside the fresh-keeping box body.

6. The self-ventilating and sterilizing fruit and vegetable fresh-keeping box according to claim 5, characterized in that: The plurality of fresh-keeping box ventilation structures are symmetrically arranged on the two side panels of the fresh-keeping box body and are located close to the center of the side panels.

7. A self-ventilating sterilizing fruit and vegetable fresh-keeping bag, characterized in that: The fresh-keeping bag comprises a fresh-keeping bag body, one or both sides of which are provided with a microporous ventilation layer, so that gas exchange can be carried out inside and outside the fresh-keeping bag body.

8. The self-ventilating sterilizing fruit and vegetable fresh-keeping bag according to claim 7, characterized in that: The microporous ventilation layer is integrally arranged on the fresh-keeping bag body through a frame.

9. The self-ventilating sterilizing fruit and vegetable fresh-keeping bag according to claim 7, characterized in that: The microporous ventilation layer includes a ventilation layer body made of PET, PP, PE, or PC plastic material. The surface of the ventilation layer body is densely covered with micropores. The thickness of the ventilation layer body is 20 to 188 microns, the pore diameter of the micropores is 50 to 300 microns, and the density of the micropores is 25 to 1600 per centimeter. 2 .

10. The self-ventilating sterilizing fruit and vegetable fresh-keeping bag according to claim 9, characterized in that: The thickness of the ventilation layer body is 50-100 microns, the pore diameter of the micropores is 150-200 microns, and the density of the micropores is 40-100 per centimeter. 2 .

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