Packaging structure

Abstract

The invention belongs to the technical field of agricultural product preservation and fresh food logistics, and particularly relates to a packaging structure. The packaging structure comprises a heat preservation box body which is provided with a containing cavity and made of heat preservation materials, a preservation box with a containing cavity and an air adjusting piece connected with the heat preservation box body, the sent objects are stored in the containing cavity, the preservation box is located in the containing cavity, a positioning hole communicated with the containing cavity is formed in the surface of the heat preservation box body, and the air adjusting piece is connected with the heat preservation box body. The air adjusting piece is arranged in the positioning hole in a sealed mode. According to the fresh-keeping device, fresh keeping of the sent objects can be achieved through temperature control and gas adjustment.

Description

Technical Field

[0001] The invention belongs to the technical field of agricultural product preservation and fresh logistics, and in particular relates to a packaging structure. Background Art

[0002] During the transportation of fruits and vegetables, it is very important to maintain the proper moisture content to keep them fresh. Otherwise, the fruits and vegetables may lose moisture, gradually wilt and shrink, resulting in weight loss, loss of freshness and poor taste. With the rapid development of fresh food e-commerce and people's love for fresh food from the place of origin, the preservation technology of fresh food express packaging is mainly based on controlling the temperature inside the packaging box.

[0003] However, for consignments of berries with a soft texture and small diameter, such as blueberries, cherry, and raspberries, simply controlling the temperature in the packaging box often fails to meet customer requirements. In addition, there is currently no effective packaging solution or packaging material that can achieve quality assurance and preservation requirements for such fruits during transportation. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a packaging structure, aiming to solve the problem of how to keep berry consignments fresh during transportation.

[0005] To achieve the above purpose, the technical solution adopted in this application is:

[0006] A packaging structure is provided for storing consigned items, the packaging structure comprising: a heat-insulating box having a receiving cavity and made of a heat-insulating material, a fresh-keeping box having a receiving cavity, and an atmosphere-adjusting component connected to the heat-insulating box, the consigned items are stored in the receiving cavity, and the fresh-keeping box is located in the receiving cavity, a positioning hole communicating with the receiving cavity is formed on the surface of the heat-insulating box, and the atmosphere-adjusting component is sealed in the positioning hole.

[0007] In some embodiments, the gas-conditioning component includes a positioning sleeve disposed in the positioning hole and a gas-conditioning film connected to the positioning sleeve, the outer surface of the positioning sleeve is sealed to the hole wall of the positioning hole, and the edge of the gas-conditioning film is sealed to the inner wall of the positioning sleeve.

[0008] In some embodiments, the length of the positioning sleeve is equal to the depth of the positioning hole.

[0009] In some embodiments, a ventilation hole connected to the accommodating cavity is provided on the surface of the fresh-keeping box, and a plurality of the ventilation holes are provided on the fresh-keeping box, and the ventilation holes are arranged at intervals.

[0010] In some embodiments, the packaging structure further includes an absorbent pad made of a flexible material, the absorbent pad is laid on the bottom of the accommodating cavity, and the consignment is placed on the absorbent pad.

[0011] In some embodiments, the consigned objects are arranged in multiple layers in the accommodating cavity, and the absorbent pad is arranged between any two adjacent layers of the consigned objects.

[0012] In some embodiments, the packaging structure further includes a vacuum bag located in the receiving cavity, the fresh-keeping box is located in the vacuum bag, and the vacuum bag is filled with a predetermined gas.

[0013] In some embodiments, two fresh-keeping boxes are arranged at intervals.

[0014] In some embodiments, the packaging structure further includes a temperature regulating member located in the receiving cavity and spaced apart from the fresh-keeping box, and the temperature regulating member includes a receiving bag and ice cubes received in the receiving bag.

[0015] In some embodiments, the fresh-keeping box includes a box body and a box cover covering the box body, and the box body and the box cover together form the accommodating cavity.

[0016] The beneficial effects of the present application are as follows: the packaging structure includes an insulation box, a fresh-keeping box and an atmosphere-conditioning component. The insulation box made of insulation material can prevent external heat from entering the containing cavity, thereby keeping the temperature in the containing cavity within a suitable range. The atmosphere-conditioning component arranged on the insulation box can keep the containing cavity in a low-oxygen state, thereby achieving the preservation of the consignment through temperature control and gas regulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or exemplary technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the three-dimensional structural principle of the packaging structure provided in an embodiment of the present application;

[0019] Figure 2 yes Figure 1 An exploded schematic diagram of a heat preservation box and a gas conditioning component provided in another embodiment;

[0020] Figure 3 yes Figure 1 A schematic diagram of the distribution structure of the fresh-keeping box and the temperature regulating member in the receiving cavity of the packaging structure;

[0021] Figure 4 yes Figure 3 Schematic diagram of the structural principle of fresh-keeping boxes and vacuum bags;

[0022] Figure 5 yes Figure 4 A schematic structural diagram of a box body of a fresh-keeping box;

[0023] Figure 6 yes Figure 4 Schematic diagram of the structure of the lid of the fresh-keeping box.

[0024] Among them, the reference numerals in the figure are:

[0025] 100, packaging structure; 110, heat preservation box; 200, fresh-keeping box; 300, temperature adjustment member; 101, positioning hole; 400, atmosphere adjustment member; 401, positioning sleeve; 402, atmosphere adjustment film; 111, receiving cavity; 120, vacuum bag; 201, air hole; 202, box body; 203, water-absorbing pad; 204, box cover; DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present application.

[0027] It should be noted that when a component is referred to as being "fixed on" or "disposed on" another component, it may be directly on the other component or indirectly on the other component. When a component is referred to as being "connected to" another component, it may be directly or indirectly connected to the other component. The orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. The terms "first" and "second" are only used for the purpose of convenience of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0028] See also Figures 1 to 3 The present application embodiment provides a packaging structure 100 for storing consignments, which may be blueberries, small cherries, raspberries, and other berry fruits with soft texture and small fruit diameter. In this embodiment, the consignments are blueberries. In other embodiments, the consignments may also be cherries or cherry tomatoes. This is not limited here and can be selected according to actual conditions.

[0029] See also Figures 1 to 3The packaging structure 100 includes: a heat preservation box 110 having a receiving cavity 111 and made of heat preservation material, a fresh-keeping box 200 having a receiving cavity, and an air conditioning component 400 connected to the heat preservation box 110. The consigned items are stored in the receiving cavity. The fresh-keeping box 200 is made of plastic and has a certain toughness, so that the consigned items in the receiving cavity can be protected. The fresh-keeping box 200 is located in the receiving cavity 111, and the heat preservation box 110 made of heat preservation material can prevent external heat from entering the receiving cavity 111, so that the temperature in the receiving cavity is within a suitable range to keep the consigned items fresh.

[0030] See also Figures 1 to 3 The surface of the heat preservation box 110 is provided with a positioning hole 101 connected to the receiving chamber 111. The gas regulating component 400 is sealed and arranged in the positioning hole 101, and is used to control the gas exchange between the receiving chamber 111 and the external space, so that the gas in the receiving chamber 111 is in a low oxygen state. It can be understood that the gas in the receiving chamber 111 can be exchanged with the outside through the gas regulating component 400, so that the ethylene gas and oxygen in the receiving chamber 111 are discharged to the external space, the oxygen concentration in the receiving chamber 111 is reduced, and the receiving chamber 111 is in a low oxygen state. The low oxygen state can inhibit the aerobic respiration of the consignment and reduce the loss of sugar, thereby achieving the preservation of the consignment.

[0031] The packaging structure 100 provided in this embodiment includes an insulation box 110, a fresh-keeping box 200 and an atmosphere-conditioning component 400. The insulation box 110 made of insulation material can prevent external heat from entering the receiving cavity 111, so that the temperature in the receiving cavity is within a suitable range. The atmosphere-conditioning component 400 arranged on the insulation box 110 can make the receiving cavity 111 in a low-oxygen state, thereby achieving the preservation of the consignment through temperature control and gas regulation.

[0032] Optionally, the thermal insulation material may be a foam material, and the foam material may be expanded polystyrene EPS (Expanded Polystyrene EPS) or expanded polypropylene EPP (Expanded polypropylene EPP).

[0033] Foam materials have the following characteristics:

[0034] Excellent heat preservation performance: The foam material has a low thermal conductivity, which can reduce the conduction of heat. It can effectively isolate the temperature difference inside and outside the heat preservation box 110, slow down the heat loss of the fruit, maintain a suitable temperature environment, and extend the shelf life of the fruit.

[0035] Lightweight and convenient: Foam materials are usually light and easy to carry and use. The insulation box 110 can be made into various shapes and sizes to meet the packaging and transportation needs of fruits of different specifications.

[0036] Good cushioning performance: The foam material has a certain softness and elasticity, which can provide a certain cushioning effect, protect the fruit from external extrusion and collision, and reduce damage and deformation.

[0037] Environmental protection and hygiene: Most foam materials are made of non-toxic and odorless materials, which are harmless to fruits and human body. At the same time, foam materials are easy to clean and disinfect, keeping the box hygienic and avoiding the growth of bacteria and mold.

[0038] Economical and Affordable: Foam materials are relatively cheap and relatively inexpensive, making them suitable for large-scale production and wide application.

[0039] Optionally, the fresh-keeping box 200 is a blister box made of plastic material, so that the fresh-keeping box 200 has good transparency, so that the internal products can be clearly seen. This helps to improve the display effect of the product and allows consumers to more intuitively understand the appearance and characteristics of the product. The blister box usually has a certain rigidity and toughness, which can effectively protect the internal consignment from external physical impacts such as collision, pressure and extrusion. It can prevent the product from being damaged or deformed during transportation and storage. And it can keep the inner wall of the accommodating cavity smooth and tidy, avoiding scratches and damage to the consignment. The fresh-keeping box 200 is also light and easy to carry.

[0040] See also Figures 1 to 3 In some embodiments, the gas-conditioning component 400 includes a positioning sleeve 401 disposed in the positioning hole 101 and a gas-conditioning film 402 connected to the positioning sleeve 401 , the outer surface of the positioning sleeve 401 is sealedly connected to the hole wall of the positioning hole 101 , and the edge of the gas-conditioning film 402 is sealedly connected to the inner wall of the positioning sleeve 401 .

[0041] See also Figures 1 to 3 Optionally, the positioning sleeve 401 is made of plastic material and is sealed with the positioning hole 101. A sealing ring can be provided on the periphery of the positioning sleeve 401 to achieve a sealed connection between the positioning sleeve 401 and the positioning hole 101, or the positioning sleeve 401 and the positioning hole 101 are interference fit to achieve a sealed connection.

[0042] See also Figures 1 to 3 The gas-controlled membrane 402 has a certain air permeability, which allows oxygen, ethylene gas and other gases to pass through the gas-controlled membrane 402 and be discharged from the receiving chamber 111. By controlling the air permeability and adjusting the gas composition, the purpose of adjusting the gas composition in the receiving chamber 111 can be achieved, such as replacing ethylene and oxygen in the box to keep the box in a low oxygen state.

[0043] The air permeability of the modified atmosphere film 402 needs to be controlled within a certain range, usually maintained at about 50-90 mm / s. This ensures that an appropriate amount of oxygen enters the fresh-keeping box to support the respiration of the fruit and maintain the freshness of the fruit through the metabolic process. At the same time, an appropriate amount of oxygen can slow down the ripening speed and respiration rate of the fruit and extend the shelf life of the fruit.

[0044] Optionally, laser technology can be used to produce the modified atmosphere film 402. Through laser processing, the air permeability of the film can be controlled to ensure a proper gas exchange effect, thereby achieving the same preservation effect as the traditional modified atmosphere film 402.

[0045] The principle of the modified atmosphere film 402 is based on controlling the composition and pressure of the gas in the receiving chamber 111 to delay the oxidation and corruption of the consigned goods, thereby extending their shelf life.

[0046] In some embodiments, the length of the positioning sleeve 401 is equal to the depth of the positioning hole 101 , thereby facilitating the installation of the positioning sleeve 401 and maintaining a smooth appearance of the thermal insulation box 110 .

[0047] See also Figures 4 to 6 In some embodiments, the surface of the fresh-keeping box 200 is provided with a vent hole 201 connected to the accommodating cavity, and a plurality of vent holes 201 are provided on the fresh-keeping box 200, and the vent holes 201 are arranged at intervals. The edges of the vent holes 201 are smooth and free of burrs to avoid damage to the consigned items.

[0048] Optionally, the air holes 201 are arranged at equal intervals on the surface of the fresh-keeping box 200, and the air holes 201 can have the following functions:

[0049] Air permeability adjustment: During the preservation process, fruits will breathe, consume oxygen and release carbon dioxide. The air holes 201 can allow fresh oxygen to enter the fresh-keeping box 200, while discharging carbon dioxide released by the fruits, maintaining a suitable atmosphere, slowing down the breathing speed of the fruits, and thus extending the preservation period.

[0050] Humidity regulation: The presence of the air holes 201 can also help regulate the humidity in the fresh-keeping box 200. An appropriate number of air holes 201 can promote the circulation and regulation of air to moisture, prevent moisture from accumulating in the fresh-keeping box 200, and thus reduce the risk of fruit getting damp and rotting.

[0051] Preventing fungi from growing: The opening of the air holes 201 can reduce the humidity in the fresh-keeping box 200 and reduce the possibility of fungi growing. Proper ventilation can prevent the fruit from being damaged by mold and rot, and maintain the quality and taste of the fruit.

[0052] In some embodiments, two gas regulating components 400 are arranged at intervals. In other embodiments, three or more gas regulating components 400 may be arranged. There is no limitation here and the selection may be made according to actual conditions.

[0053] See also Figures 4 to 6 In some embodiments, the packaging structure 100 further includes an absorbent pad 203 made of a flexible material, the absorbent pad 203 is laid on the bottom of the accommodating cavity, and the consignment is placed on the absorbent pad 203 .

[0054] Optionally, in this embodiment, the flexible material is a sponge, and the sponge is a high-resilience soft polyether sponge, which has the following characteristics:

[0055] High resilience: High resilience soft polyether sponge can recover its original shape and maintain the stability of its shape. This feature can provide soft support for fruits, reduce vibration and collision during transportation, and prevent fruits from mechanical damage.

[0056] Good water absorption: The polyether sponge material has good water absorption performance and can absorb water and maintain a moist environment. By laying the absorbent pad 203 at the bottom of the fresh-keeping box 200, the water on the surface of the fruit can be absorbed to prevent the fruit from excessively losing water during transportation, thereby maintaining the freshness and taste of the fruit.

[0057] Appropriate density: Select sponge density ≤ 18Kg / m 3 The polyether sponge can ensure that the sponge is soft and elastic enough to not cause pressure or damage to the fruit. The appropriate density can also ensure that the sponge does not absorb too much water, avoiding water accumulation and causing fruit rot.

[0058] Appropriate thickness: The thickness of the water-absorbing pad 203 is usually between 3 and 7 mm. This range can provide sufficient cushioning effect while maintaining water absorption performance. A sponge sheet with moderate thickness can stably support the fruit and reduce squeezing and collision between the fruits.

[0059] By laying a high-resilience soft polyether sponge at the bottom of the fresh-keeping box 200, the fruit can be effectively protected, mechanical damage can be prevented, excess moisture can be absorbed, and a comfortable support can be provided for the fruit, thereby improving the transportation safety and fresh-keeping effect of the fruit and maintaining the quality and taste of the fruit.

[0060] See also Figures 1 to 3 In some embodiments, the consignments are arranged in multiple layers in the accommodating cavity, and the absorbent pad 203 is arranged between any two adjacent layers of the consignments, so as to protect each layer of fruits.

[0061] See also Figures 2 to 4In some embodiments, the packaging structure 100 further includes a vacuum bag 120 located in the receiving cavity 111, the fresh-keeping box 200 is located in the vacuum bag 120, and the vacuum bag 120 is filled with a predetermined gas. Optionally, the predetermined gas may be nitrogen or other inert gases. In this embodiment, the predetermined gas is nitrogen. In other embodiments, the predetermined gas may also be argon or helium. This is not limited here and can be selected according to actual conditions.

[0062] See also Figures 2 to 4 By placing the fresh-keeping box 200 in the vacuum bag 120, the vacuum bag 120 has good sealing performance and can prevent the entry of oxygen and the evaporation of water. Use the gas conditioning equipment to inflate the vacuum bag 120 so that nitrogen replaces the oxygen and carbon dioxide in the vacuum bag 120, and seal the bag mouth of the vacuum bag 120. The nitrogen concentration is 75% to 85%. Nitrogen is an inactive gas that will not react with fruits and will not affect the quality of fruits. At the same time, by replacing the oxygen and carbon dioxide in the vacuum bag 120, the respiration of the fruit and the growth of microorganisms are reduced, and the ripening and corruption process of the fruit is delayed.

[0063] The opening of the vacuum bag 120 is sealed to ensure that the gas in the vacuum bag 120 does not leak out and maintain the stability of the atmosphere. The sealed vacuum bag 120 can effectively isolate the outside air and humidity, reducing the water loss and oxidation reaction of the fruit.

[0064] In some embodiments, the packaging structure further includes a temperature regulating member 300, which is located in the receiving chamber 111 and between the two vacuum bags 120. The temperature regulating member 300 is used to reduce the temperature in the vacuum bag 120, so that the consigned items in the receiving chamber are in a suitable temperature range. Optionally, the temperature regulating member 300 includes a receiving bag and ice cubes received in the receiving bag. The color of the receiving bag is white, and the bag mouth is sealed after the ice cubes are placed in it. The temperature in the receiving chamber can be reduced by the temperature regulating member 300, so that the receiving chamber is in a low temperature state.

[0065] See also Figures 2 to 4 In some embodiments, two fresh-keeping boxes 200 are arranged at intervals, and the temperature adjustment member 300 is located between the two fresh-keeping boxes 200, so that the temperature adjustment member 300 can simultaneously cool down the two fresh-keeping boxes 200. It can be understood that each fresh-keeping box 200 is respectively contained in two vacuum bags 120.

[0066] It is understandable that two layers of fresh-keeping boxes 200 can be placed on either side of the temperature regulating member 300 to increase the loading capacity of the thermal insulation box 110 .

[0067] The low-temperature storage chamber can keep the consignment fresh for a relatively long period of time. The principle is as follows:

[0068] Delaying enzyme activity: Consignments contain a variety of enzymes, which will accelerate the maturation and corruption of consignments at a suitable temperature. Low temperature can slow down the activity of enzymes and reduce the rate of their catalytic reactions, thereby delaying the maturation and corruption of consignments and extending their shelf life.

[0069] Controlling microbial growth: Low temperatures can inhibit the growth of microorganisms, including bacteria, molds and yeasts. These microorganisms are one of the main factors that cause consignments to spoil. In a low temperature environment, the metabolic activity of microorganisms slows down and their reproductive capacity decreases, thus reducing the possibility of consignments being contaminated and spoiled by microorganisms.

[0070] Slow down the evaporation of water: The consignments contain a lot of water, and low temperature can slow down the evaporation rate of water. At higher temperatures, water is easy to evaporate from the surface of the consignments, causing the consignments to lose water, shrink and deteriorate. In a low temperature environment, the evaporation rate of water is slowed down, which can maintain the moisture content of the consignments and prolong their moisture retention and taste.

[0071] Inhibit respiration: The consignments are living organisms and have respiration. Respiration consumes oxygen inside the consignments and releases carbon dioxide and heat, accelerating the metabolism and aging of the consignments. Under low temperature conditions, respiration slows down, reducing oxygen consumption and carbon dioxide production, thereby slowing down the aging process of the consignments and extending their shelf life.

[0072] See also Figures 5 and 6 In some embodiments, the fresh-keeping box 200 includes a box body 202 and a box cover 204 covering the box body 202 , and the box body 202 and the box cover 204 together form the accommodating cavity, and the consignment can be conveniently taken / placed by opening the box cover 204 .

[0073] The packaging structure 100 provided in this embodiment can effectively protect the consigned items and extend their transportation time by at least 12 hours, which is very beneficial for fruits that need to maintain their quality and freshness.

[0074] The above are only optional embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A packaging structure for storing consigned goods, characterized in that: The packaging structure includes: an insulation box body having a receiving cavity and made of insulation material, a fresh-keeping box having a receiving cavity, and an atmosphere-conditioning component connected to the insulation box body. The consigned items are stored in the receiving cavity, and the fresh-keeping box is located in the receiving cavity. A positioning hole connected to the receiving cavity is opened on the surface of the insulation box body, and the atmosphere-conditioning component is sealed in the positioning hole.

2. The packaging structure according to claim 1, characterized in that: The gas-adjusting component includes a positioning sleeve arranged in the positioning hole and a gas-adjusting film connected to the positioning sleeve, the outer surface of the positioning sleeve is sealed to the hole wall of the positioning hole, and the edge of the gas-adjusting film is sealed to the inner wall of the positioning sleeve.

3. The packaging structure according to claim 2, characterized in that: The length of the positioning sleeve is equal to the depth of the positioning hole.

4. The packaging structure according to claim 1, characterized in that: The surface of the fresh-keeping box is provided with ventilation holes connected to the accommodating cavity, a plurality of ventilation holes are provided on the fresh-keeping box, and the ventilation holes are arranged at intervals.

5. The packaging structure according to claim 1, characterized in that: The packaging structure further comprises a water-absorbing pad made of a flexible material, the water-absorbing pad is laid on the bottom of the accommodating cavity, and the consignment is arranged on the water-absorbing pad.

6. The packaging structure according to claim 5, characterized in that: The consigned objects are arranged in multiple layers in the accommodating cavity, and the water-absorbing pad is arranged between any two adjacent layers of the consigned objects.

7. The packaging structure according to any one of claims 1 to 6, characterized in that: The packaging structure also includes a vacuum bag located in the receiving cavity, the fresh-keeping box is located in the vacuum bag, and the vacuum bag is filled with a predetermined gas.

8. The packaging structure according to any one of claims 1 to 6, characterized in that: The fresh-keeping boxes are arranged in two at intervals.

9. The packaging structure according to any one of claims 1 to 6, characterized in that: The packaging structure further includes a temperature regulating member located in the receiving cavity and spaced apart from the fresh-keeping box, wherein the temperature regulating member includes a receiving bag and ice cubes received in the receiving bag.

10. The packaging structure according to any one of claims 1 to 6, characterized in that: The fresh-keeping box comprises a box body and a box cover covering the box body, and the box body and the box cover together form the accommodating cavity.

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