Refrigerated food packaging bag

Abstract

The utility model discloses a refrigerated food packaging bag which comprises an outer bag body and an inner bag body for containing refrigerated food, the outer bag body comprises two outer bag faces, one-way water permeable film bubbles are arranged at the positions close to an outer bag opening respectively, and water absorption cold storage agent bags are contained in the one-way water permeable film bubbles. The water-absorbing cool-storage agent bag can absorb and store a large amount of cold energy when the refrigerated food is stored at low temperature, and after the refrigerated food packaging bag is separated from a low-temperature environment, the water-absorbing cool-storage agent bag in the one-way water-permeable film bubbles can absorb water vapor in the air and condense water drops when the water vapor is cooled, a large amount of cold energy is released, and temperature rise in the storage space of the outer bag is delayed; and leakage of condensed water is prevented. The two one-way water permeable membrane bubbles are attached to each other when the outer bag opening of the outer bag body is closed, and the function of a sealing auxiliary structure equivalent to the outer bag opening is achieved. The inner walls of the two outer bag faces are covered with the pearl wool aluminized films used for wrapping the inner bag body, the effect of reflecting heat radiation is achieved, internal low-temperature air is further gathered in the bag and is not prone to being directly scattered out, and the fresh-keeping effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging, in particular to a refrigerated food packaging bag. Background Art

[0002] A food packaging bag refers to a film container that directly contacts food and is used to hold and protect food. In order to extend the storage time of food, freezing is a low-cost and widely applicable storage method. For example, most kinds of meat foods are stored by freezing. During the transportation and distribution process of refrigerated food transferred from a refrigerated warehouse, if the temperature cannot be maintained low enough all the time, the refrigerated food will thaw, which is likely to breed bacteria and cause spoilage.

[0003] Therefore, how to improve the fresh-keeping effect of a refrigerated food packaging bag as a container on refrigerated food has always been an important technical improvement direction for refrigerated food packaging bags. The existing refrigerated food packaging bags generally only improve the fresh-keeping effect on refrigerated food through conventional methods such as vacuum pumping, and there is still room for improvement. Summary of the Utility Model

[0004] In view of this, the purpose of the utility model is to provide a refrigerated food packaging bag to solve the above problems.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] The utility model provides a refrigerated food packaging bag, which includes an outer bag body and an inner bag body for storing refrigerated food. The outer bag body includes two outer bag surfaces, and the corresponding edges of the two outer bag surfaces enclose an outer bag storage space with an outer bag opening at the top. The inner bag body is stored in the outer bag storage space.

[0007] Wherein, one-way water-permeable membrane bubbles are respectively arranged on the inner walls of the two outer bag surfaces near the outer bag opening. The extending direction of the one-way water-permeable membrane bubbles is parallel to the edge of the outer bag opening. The one-way water-permeable membrane bubbles on the two outer bag surfaces are arranged oppositely. When the outer bag opening of the outer bag body is closed, the two one-way water-permeable membrane bubbles are mutually attached. An absorbent cold storage agent package is accommodated in the one-way water-permeable membrane bubble. The inner walls of the two outer bag surfaces are covered with an aluminized pearl cotton film for wrapping the inner bag body.

[0008] Preferably, a tearable film is pasted on the one-way water-permeable membrane bubble, and the tearable film covers the surface of the one-way water-permeable membrane bubble to isolate the absorbent cold storage agent package in the one-way water-permeable membrane bubble from the outside of the one-way water-permeable membrane bubble.

[0009] Preferably, one-way water-permeable membrane bubbles are also arranged at the bottom of the outer bag storage space.

[0010] Preferably, the volume of the one-way water-permeable membrane bubble is greater than the volume of the water-absorbing and cold-storing agent package after it is fully expanded by absorbing water.

[0011] Preferably, a zipper seal is provided below the outer bag opening of the outer bag body, and the extending direction of the zipper seal is parallel to the edge of the outer bag opening to close the outer bag storage space. Easy-to-tear openings are respectively formed on both sides of the inner bag body.

[0012] Preferably, the outer bag surface is a composite film formed by laminating a cast polypropylene film layer, a nylon film layer, and a polyethylene film layer.

[0013] Preferably, the inner bag body is a vacuum bag formed by laminating an aluminum foil layer, a metal mesh layer, a nylon film layer, and a polyethylene film layer.

[0014] The technical effects achieved by the technical solution of the present utility model mainly include:

[0015] By providing the one-way water-permeable membrane bubble and the water-absorbing and cold-storing agent package therein, after the refrigerated food packaging bag is taken out of the low-temperature environment, the refrigerated food packaging bag is relatively at a lower temperature than the outside. When the surfaces of the refrigerated food packaging bag come into contact with air, the water vapor in the air will condense into water droplets when it meets the cold. The water droplets can penetrate into the one-way water-permeable membrane bubble from the outside, and the water-absorbing and cold-storing agent package in the one-way water-permeable membrane bubble can absorb these water droplets. The water-absorbing and cold-storing agent package can absorb and store a large amount of cold energy at low temperatures, and can release a large amount of cold energy at higher temperatures, maintaining a low-temperature environment for itself and the small surrounding area for a long time, delaying the temperature rise inside the outer bag storage space, and preventing the leakage of condensed moisture;

[0016] The extending direction of the one-way water-permeable membrane bubble is parallel to the edge of the outer bag opening. When the outer bag opening of the outer bag body is closed, the two one-way water-permeable membrane bubbles are attached to each other, acting as an auxiliary sealing structure equivalent to the outer bag opening;

[0017] The inner bag body is wrapped with an EPE aluminized film to reflect the thermal radiation therein, so that the low-temperature air inside accumulates in the bag and is not easily directly dissipated, further prolonging the time for the temperature to rise inside the bag and improving the fresh-keeping effect of the above-mentioned refrigerated food packaging bag. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the installation of the outer bag body and the inner bag body in the refrigerated food packaging bag provided by the present utility model;

[0019] Figure 2 It is a schematic diagram of the internal structure of the outer bag body in the refrigerated food packaging bag;

[0020] Figure 3 It is a front view of the inner bag body in the refrigerated food packaging bag.

[0021] The reference numerals in the above drawings are as follows:

[0022] The outer bag body 1, the outer bag opening 10, the outer bag storage space 100, the outer bag surface 11, the one-way water-permeable film bubble 12, the water-absorbing and cold-storing agent package 13, the pearl cotton aluminized film 14, the easy-tear film 15, and the zipper seal 16;

[0023] The inner bag body 2 and the easy-tear opening 20. Detailed implementation manners

[0024] To make the objectives, technical solutions, and advantages of the present utility model clearer, the following will describe in detail the specific implementation manners of the present utility model with reference to the drawings. Examples of these preferred implementation manners are illustrated in the drawings. The implementation manners of the present utility model shown in the drawings and described according to the drawings are merely exemplary, and the present utility model is not limited to these implementation manners.

[0025] Here, it should also be noted that, in order to avoid obscuring the present utility model due to unnecessary details, only the structures and / or processing steps closely related to the solution of the present utility model are shown in the drawings, while other details of little relevance are omitted.

[0026] Referring to Figure 1 As shown, an embodiment of the present utility model provides a refrigerated food packaging bag, which includes an outer bag body 1 and an inner bag body 2 for storing refrigerated food. Combining Figure 1 and Figure 2 As shown, the outer bag body 1 includes two outer bag surfaces 11, and the corresponding edges of the two outer bag surfaces 11 enclose an outer bag storage space 100 with an outer bag opening 10 opened above. The inner bag body 2 is stored in the outer bag storage space 100.

[0027] Wherein, one-way water-permeable film bubbles 12 are respectively arranged on the inner walls of the two outer bag surfaces 11 near the outer bag opening 10. The extending direction of the one-way water-permeable film bubbles 12 is parallel to the edge of the outer bag opening 10. The one-way water-permeable film bubbles 12 on the two outer bag surfaces 11 are arranged oppositely. The two one-way water-permeable film bubbles 12 are attached to each other when the outer bag opening 10 of the outer bag body 1 is closed. The one-way water-permeable film bubble 12 contains a water-absorbing and cold-storing agent package 13, and a pearl cotton aluminized film 14 for wrapping the inner bag body 2 is covered on the inner walls of the two outer bag surfaces 11.

[0028] The refrigerated food packaging bag is provided with a one-way water-permeable membrane bubble 12 and a water-absorbing and cold-storing agent package 13 therein. After the refrigerated food packaging bag is taken out of the low-temperature environment, the temperature of the refrigerated food packaging bag is relatively lower than the outside temperature. When the surface areas of the refrigerated food packaging bag come into contact with air, the water vapor in the air will condense into water droplets when encountering the relatively cold temperature. The water droplets can penetrate into the one-way water-permeable membrane bubble 12 from the outside, and the water-absorbing and cold-storing agent package 13 in the one-way water-permeable membrane bubble 12 can absorb these water droplets. The main component of the water-absorbing and cold-storing agent package 13 is a gel body, which is usually composed of chemical substances such as sodium polyacrylate and polyethylene glycol acrylate. These gel bodies can absorb and store a large amount of cold energy at low temperatures, and can release a large amount of cold energy at higher temperatures, maintaining a low-temperature environment within itself and a small surrounding area for a long time, delaying the temperature rise inside the outer bag storage space 100 and preventing the leakage of condensed moisture. Moreover, since the extending direction of the one-way water-permeable membrane bubble 12 is parallel to the edge of the outer bag opening 10, the two one-way water-permeable membrane bubbles 12 are mutually adhered when the outer bag opening 10 of the outer bag body 1 is closed, acting as an auxiliary sealing structure equivalent to the outer bag opening 10. In addition, the thermal conductivity coefficient of the pearl cotton aluminized film 14 is relatively low, and it wraps the inner bag body 2 so that the low-temperature air inside accumulates in the bag and is not easily directly dissipated, further prolonging the time for the temperature to rise inside the bag and improving the freshness preservation effect of the above-mentioned refrigerated food packaging bag.

[0029] When applying the above-mentioned refrigerated food packaging bag provided by the embodiment of the present invention, first package the refrigerated food into the inner bag body 2 and perform a vacuum treatment, and then put the inner bag body 2 into the outer bag body 1, so that the refrigerated food packaging bag including the outer bag body 1 and the inner bag body 2 is placed in a refrigerated environment for storage. When it is necessary to take out the refrigerated food packaging bag for transportation and distribution and the refrigerated food packaging bag leaves the low-temperature environment, the above-mentioned water-absorbing and cold-storing agent package 13 and pearl cotton aluminized film 14 and other structures can play their freshness preservation roles.

[0030] To prevent moisture from penetrating into the one-way water-permeable membrane bubble 12 and into its interior before the water-absorbing and cold-storing agent package 13 is needed, and to ensure that the water-absorbing and cold-storing agent package 13 can effectively play its role when freshness preservation is required, an easy-to-tear film 15 is pasted on the one-way water-permeable membrane bubble 12. The easy-to-tear film 15 covers the surface of the one-way water-permeable membrane bubble 12 to isolate the water-absorbing and cold-storing agent package 13 inside the one-way water-permeable membrane bubble 12 from the outside. The material of the easy-to-tear film 15 is based on white and transparent PET materials, using an acrylic adhesive system, and has the advantages of abrasion resistance, no residual glue, and light tensile force. Before use, keep the easy-to-tear film 15 pasted on the one-way water-permeable membrane bubble 12. When it is necessary to exert the freshness preservation effect of the refrigerated food packaging bag, tear off the easy-to-tear film 15 to expose the one-way water-permeable membrane bubble 12 so that moisture can penetrate into the one-way water-permeable membrane bubble 12 from the outside.

[0031] Furthermore, a one-way water-permeable film bubble 12 is also provided at the bottom of the outer bag storage space 100, and a water-absorbing and cold-storing agent pack 13 is placed therein as well. First, since the water-absorbing and cold-storing agent pack 13 near the outer bag opening 10 is relatively far from the bottom of the outer bag storage space 100, the effect on the bottom of the outer bag storage space 100 is somewhat weakened. The one-way water-permeable film bubble 12 provided at the bottom of the outer bag storage space 100 can fill this gap. Second, it can prevent a certain amount of condensed water droplets from accumulating at the bottom of the outer bag storage space 100.

[0032] The one-way water-permeable film bubble 12 refers to a bubble-like structure formed by a one-way water-permeable film on the inner wall of the outer bag body 1. Specifically, the volume of the one-way water-permeable film bubble 12 is larger than the volume of the water-absorbing and cold-storing agent pack 13 after it is fully expanded by absorbing water, so as to provide sufficient expansion space for the water-absorbing and cold-storing agent pack 13, thereby avoiding the risk of the water-absorbing and cold-storing agent pack 13 bursting due to excessive absorption of water droplets.

[0033] The gel in the water-absorbing and cold-storing agent pack 13 will return to its original shape after being completely thawed, and can be used for repeated freezing. It can be widely used for the fresh-keeping express transportation of fruits, vegetables, foods, vaccines and other items and physical cooling such as medical cold compress.

[0034] In this embodiment, a zipper seal 16 is provided below the outer bag opening 10 of the outer bag body 1, and the extending direction of the zipper seal 16 is parallel to the edge of the outer bag opening to close the outer bag storage space 100. As Figure 3 shown, tear-open openings 20 are respectively provided on both sides of the inner bag body 2, which is a conventional and convenient bag-opening structure for a vacuum bag.

[0035] Exemplarily, the outer bag surface 11 is a composite film formed by laminating a cast polypropylene film layer, a nylon film layer and a polyethylene film layer. The inner bag body 2 is a composite film bag body formed by laminating an aluminum foil layer, a metal mesh layer, a nylon film layer and a polyethylene film layer. The cast polypropylene film layer, that is, the RCPP film, is a polypropylene film produced by the cast extrusion process, which has strong puncture resistance, moisture-proof effect and heat resistance. The nylon film layer has good gas barrier properties, low oxygen transmission rate, and also has advantages such as wear resistance, toughness and heat resistance to cooking. The polyethylene film layer is one of the most common packaging bag film materials, and its good flexibility, chemical corrosion resistance and environmental protection advantages make it widely used. And the inner bag body 2 is the part directly in contact with the refrigerated food, and there are sharp parts on the surface of the refrigerated food. Therefore, it is necessary for the inner bag body 2 to have sufficient puncture resistance. The combination of the aluminum foil layer, the metal mesh layer and the nylon film layer can make its mechanical properties strong enough to meet the requirements of puncture resistance.

[0036] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

[0037] The above are only specific embodiments of the present application. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A refrigerated food packaging bag, characterized in that, The refrigerated food packaging bag includes an outer bag body (1) and an inner bag body (2) for storing refrigerated food. The outer bag body (1) includes two outer bag surfaces (11). The corresponding edges of the two outer bag surfaces (11) enclose an outer bag storage space (100) with an outer bag opening (10) formed at the upper part. The inner bag body (2) is stored in the outer bag storage space (100). Among them, one-way water-permeable membrane bubbles (12) are respectively arranged on the inner walls of the two outer bag surfaces (11) near the outer bag opening (10). The extending direction of the one-way water-permeable membrane bubbles (12) is parallel to the edge of the outer bag opening (10). The one-way water-permeable membrane bubbles (12) on the two outer bag surfaces (11) are arranged opposite to each other. When the outer bag opening (10) of the outer bag body (1) is closed, the two one-way water-permeable membrane bubbles (12) are attached to each other. An absorbent and cold-storage agent package (13) is contained in the one-way water-permeable membrane bubble (12). A pearl cotton aluminized film (14) for wrapping the inner bag body (2) is covered on the inner walls of the two outer bag surfaces (11).

2. The refrigerated food packaging bag according to claim 1, characterized in that, An easy-tear film (15) is pasted on the one-way water-permeable membrane bubble (12). The easy-tear film (15) covers the surface of the one-way water-permeable membrane bubble (12) to isolate the absorbent and cold-storage agent package (13) inside the one-way water-permeable membrane bubble (12) from the outside of the one-way water-permeable membrane bubble (12).

3. The refrigerated food packaging bag according to claim 2, characterized in that, One-way water-permeable membrane bubbles (12) are also arranged at the bottom of the outer bag storage space (100).

4. The refrigerated food packaging bag according to claim 1, wherein The volume of the one-way water-permeable membrane bubble (12) is larger than the volume after the absorbent and cold-storage agent package (13) absorbs water and expands completely.

5. The refrigerated food packaging bag according to claim 1, wherein A zipper seal (16) is arranged below the outer bag opening (10) of the outer bag body (1). The extending direction of the zipper seal (16) is parallel to the edge of the outer bag opening (10) to close the outer bag storage space (100). Easy-tear openings (20) are respectively formed on both sides of the inner bag body (2).

6. The refrigerated food packaging bag according to claim 1, wherein The outer bag surface (11) is a composite film formed by laminating a cast polypropylene film layer, a nylon film layer, and a polyethylene film layer.

7. The refrigerated food packaging bag according to any one of claims 1 to 6, characterized in that, The inner bag body (2) is a vacuum bag formed by laminating an aluminum foil layer, a metal mesh layer, a nylon film layer, and a polyethylene film layer.

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