A cold storage bag

Abstract

The utility model relates to a cold storage bag, which belongs to the field of cold storage technology. A cold storage bag comprises a bag body formed by heat-sealing two layers of polymer films, wherein a number of heat-sealing lines are arranged on the bag body, and a bag body unit is formed between any two adjacent heat-sealing lines; the bag body units are independent of each other. The utility model divides the bag body into a plurality of bag body units through heat-sealing lines, and each bag body unit is a columnar structure. The bag body is in sheet shape as a whole, and can be surrounded in a circle inside a box body when in use. A cold storage bag can also be placed on each of the upper and lower sides of the box body, thereby forming a relatively closed cold space around the refrigerated items, providing all-round refrigeration protection for the refrigerated items, and thus having the advantage of good cold preservation effect.

Description

Technical Field

[0001] The utility model relates to a cold storage bag and belongs to the technical field of cold storage. Background Art

[0002] Cold chain transportation refers to the transportation of goods at a certain temperature throughout the entire transportation process, whether it is loading and unloading, changing transportation methods, changing packaging equipment, etc. Insulation is a very important part of it. For example, in the short-term transportation of some refrigerated / frozen foods, it is not necessary to equip the transportation vehicle with a refrigeration system. Often, only a certain number of ice packs need to be placed in the insulated compartment and / or food packaging box.

[0003] The use of ice bags can be traced back to the last century; however, ordinary ice bags release cold quickly and produce water stains when releasing cold. At present, people generally use cold storage bags, which have high cold capacity, slow cold release, and are not easy to produce water stains. For example, the utility model patent with the authorization announcement number CN219008579U discloses a reusable refrigeration bag for fresh fruit transportation; it includes a bag body, and the two sides of the bag body are symmetrically provided with shaping parts, the shaping parts include a cotton layer and a plurality of shaping strips, and the cotton layer is fixedly connected to the bag body, and a plurality of shaping strips are equidistantly embedded in the cotton layer, and the shaping strips shape the sides of the bag body. This scheme uses the shaping strips to keep the two sides of the bag body from deforming, so that the bag body remains in its original shape, so that the frozen bag body is basically the same shape, and does not take up too much space when placed in the fruit box. In addition, due to the provision of the cotton layer, the fruit does not directly contact the frozen bag body, which prevents the fruit from being frostbitten, and is more practical.

[0004] However, when such cold storage bags are loaded in a box, they cannot fully wrap the refrigerated items and cannot form a relatively closed cold space around the items. Therefore, they have the disadvantage of poor cold preservation effect. Utility Model Content

[0005] The technical solution of the utility model to solve the above problems is as follows:

[0006] A cold storage bag comprises a bag body formed by heat-sealing two layers of polymer films, wherein a number of heat-sealing lines are arranged on the bag body, and a bag body unit is formed between any two adjacent heat-sealing lines; the bag body units are independent of each other.

[0007] In the above technical scheme of the utility model, the bag body is divided into a plurality of bag body units by heat-sealed lines, each bag body unit is a columnar structure, and the bag body as a whole is in the form of a sheet, which can be arranged in a circle inside the box body when in use, and a cold storage bag can be placed on each of the upper and lower sides of the box body, thereby forming a relatively closed cold space around the refrigerated items, providing all-round refrigeration protection for the refrigerated items, and thus having the advantage of good cold preservation effect.

[0008] As a preferred embodiment of the above technical solution, the heat sealing lines are arranged in parallel.

[0009] As a preferred embodiment of the above technical solution, the distance between any two adjacent heat-sealing lines is 2-5 cm.

[0010] As a preferred embodiment of the above technical solution, the distance between any two adjacent heat-sealing lines is equal.

[0011] As a preferred embodiment of the above technical solution, the bag body is a polyethylene bag body or a polypropylene bag body.

[0012] As a preferred embodiment of the above technical solution, the cold storage bag also includes a liquid filling channel connected to the bag body; the liquid filling channel is connected to each of the bag body units via a one-way liquid valve.

[0013] In the above technical solution of the utility model, the arrangement of the liquid filling channel and the one-way liquid valve can satisfy the requirement of filling all bag units with liquid at one time, thereby maximizing the liquid filling efficiency.

[0014] As a preferred embodiment of the above technical solution, the one-way air valve includes an expansion portion arranged in the liquid filling channel and a contraction portion arranged in the bag body unit.

[0015] As a preferred embodiment of the above technical solution, the one-way liquid valve is connected to the liquid filling channel through a point seal.

[0016] As a preferred embodiment of the above technical solution, each of the bag units is provided with two one-way liquid valves.

[0017] As a preferred embodiment of the above technical solution, SAP water-absorbing resin powder is arranged in the bag unit.

[0018] In the above technical solution of the utility model, two types of cold storage media can be used. One is a gel-like material. This cold storage gel will not produce water stains during the cold release process, so it can be directly filled into the bag unit; the other cold storage medium can be conventional water or aqueous solution. This type of cold storage medium will produce water stains during the cold release process. Although the utility model divides the bag into multiple independent bag units, the damage of one bag unit will not affect another, but the damaged bag unit will still produce water stains during the cold release process. Therefore, in the above technical solution of the utility model, SAP water-absorbing resin powder is set in the bag unit. In this way, even if the bag unit is damaged, the cold storage medium with strong fluidity will be locked by the SAP water-absorbing resin powder and will not produce water stains.

[0019] In summary, the utility model has the following beneficial effects:

[0020] 1. The utility model divides the bag into multiple bag units by heat-sealing lines. Each bag unit is a columnar structure. The bag is in sheet form as a whole. When in use, it can be surrounded in a circle inside the box. A cold storage bag can also be placed on the upper and lower sides of the box, thereby forming a relatively closed cold space around the refrigerated items, providing all-round refrigeration protection for the refrigerated items, and thus having the advantage of good cold preservation effect;

[0021] 2. In the preferred embodiment of the present invention, SAP water-absorbing resin powder is further arranged in the bag unit. In this way, even if the bag unit is damaged, the highly fluid cold storage medium will be locked with moisture by the SAP water-absorbing resin powder, and no water stains will be generated. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the utility model;

[0023] Figure 2 yes Figure 1 A partial enlarged view of

[0024] In the figure, 01-bag body, 02-liquid filling channel, 03-one-way liquid valve;

[0025] 01-1 -Heat sealing line, 01-2 -Bag unit;

[0026] 03-1 -flaring part, 03-2 -Neck part, 03-3 -Click to seal. DETAILED DESCRIPTION

[0027] The present invention is further explained below in conjunction with the accompanying drawings.

[0028] This specific implementation mode is only an explanation of the utility model, not a limitation of the utility model. Any changes made by those skilled in the art after reading the specification of the utility model will be protected by the patent law as long as they are within the scope of the claims.

[0029] like Figure 1 As shown, a cold storage bag includes a bag body 01 formed by heat-sealing two layers of polypropylene film, and the bag body 01 is provided with a number of parallel heat-sealing lines 01-1. In this embodiment, the distance between any two adjacent heat-sealing lines 01-1 is 3 cm. A bag body unit 01-2 is formed between any two adjacent heat-sealing lines 01-1; the bag body units 01-2 are independent of each other.

[0030] The cold storage bag also includes a liquid filling channel 02 connected to the bag body 01; the liquid filling channel 02 is connected to each of the bag body units 01-2 via a one-way liquid valve 03.

[0031] like Figure 2 As shown, the one-way air valve 03 comprises an expanded portion 03-1 disposed in the liquid filling channel 02 and a contracted portion 03-2 disposed in the bag unit 01-2. The one-way liquid valve 03 is connected to the liquid filling channel 02 via a point seal 03-3.

[0032] like Figure 1 As shown, each bag unit 01-2 is provided with two one-way liquid valves 03. SAP water-absorbing resin powder is provided in the bag unit 01-2.

[0033] In the above technical solution of the utility model, two types of cold storage media can be used. One is a gel-like material. This cold storage gel will not produce water stains during the cold release process, so it can be directly filled into the bag unit; the other cold storage medium can be conventional water or aqueous solution. This type of cold storage medium will produce water stains during the cold release process. Although the utility model divides the bag into multiple independent bag units, the damage of one bag unit will not affect another, but the damaged bag unit will still produce water stains during the cold release process. Therefore, in the above technical solution of the utility model, SAP water-absorbing resin powder is set in the bag unit. In this way, even if the bag unit is damaged, the cold storage medium with strong fluidity will be locked in moisture by the SAP water-absorbing resin powder and will not produce water stains.

Claims

1. A cold storage bag, comprising a bag body (01) formed by heat-sealing two layers of polymer films, characterized in that: The bag body (01) is provided with a number of heat sealing lines (01-1), and a bag body unit (01-2) is formed between any two adjacent heat sealing lines (01-1); the bag body units (01-2) are independent of each other; The cold storage bag further comprises a liquid filling channel (02) connected to the bag body (01); the liquid filling channel (02) is connected to each of the bag body units (01-2) via a one-way liquid valve (03).

2. A cold storage bag according to claim 1, characterized in that: The heat sealing lines (01-1) are arranged in parallel.

3. A cold storage bag according to claim 2, characterized in that: The distance between any two adjacent heat-sealing lines (01-1) is 2~5cm.

4. A cold storage bag according to claim 3, characterized in that: The distance between any two adjacent heat-sealing lines (01-1) is equal.

5. A cold storage bag according to claim 1, characterized in that: The bag body (01) is a polyethylene bag body or a polypropylene bag body.

6. A cold storage bag according to claim 1, characterized in that: The one-way liquid valve (03) comprises an expanded portion (03-1) arranged in the liquid filling channel (02) and a contracted portion (03-2) arranged in the bag unit (01-2).

7. The cold storage bag according to claim 1, characterized in that: The one-way liquid valve (03) is connected to the liquid filling channel (02) via a point seal (03-3).

8. A cold storage bag according to claim 7, characterized in that: Each of the bag units (01-2) is provided with two one-way liquid valves (03).

9. The cold storage bag according to claim 1, characterized in that: The bag unit (01-2) is provided with SAP water-absorbing resin powder.

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