A packaging bag for quick-frozen food

By setting up a storage auxiliary mechanism on the frozen food packaging bag, and using the cooperation of clamping strips and spring rings, the problem of the packaging bag opening being stretched open during freezing is solved, thus maintaining the airtightness of the packaging bag and preventing food oxidation and cross-contamination of flavors.

CN224589710UActive Publication Date: 2026-08-04ZHEJIANG FANGDING PACKAGING TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG FANGDING PACKAGING TECH CO LTD
Filing Date
2025-10-10
Publication Date
2026-08-04

AI Technical Summary

Technical Problem

Traditional frozen food packaging bags often break open during the freezing process due to food expansion, losing their seal and leading to food oxidation, spoilage, and cross-contamination of flavors.

Method used

The storage auxiliary mechanism includes components such as an upper positioning strip, a clamping strip, a lower positioning strip, a spring ring, and a support pad. Through the cooperation of the clamping strip and the clamping groove, the spring ring clamps the clamping strip, limiting the expansion of the storage opening and maintaining the airtightness of the packaging bag.

Benefits of technology

It effectively prevents excessive expansion of the packaging bag opening, maintains the airtightness of the packaging bag, and prevents food from oxidizing, spoiling, and absorbing odors.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a packaging bag for quick-frozen food, including a main body of the packaging bag. A storage auxiliary mechanism is provided at the upper end of the main body. The storage auxiliary mechanism includes a connecting seat fixedly connected to the upper end of the main body, a storage opening fixedly connected to the upper end of the connecting seat, an upper positioning strip fixedly connected to the front end of the storage opening, a clamping strip placed near the lower side of the upper positioning strip near the front end of the storage opening, and a lower positioning strip fixedly connected near the lower side of the clamping strip near the front end of the storage opening. This utility model discloses a packaging bag for quick-frozen food. By placing the clamping strip inside the upper and lower positioning strips, and then fitting a spring ring into the limiting groove, the spring ring clamps the two sets of clamping strips, and the two sets of clamping strips clamp the storage opening inside the clamping groove. This achieves the purpose of limiting the storage opening with the two sets of clamping strips, thereby preventing the storage opening from expanding excessively outward, thus maintaining the airtightness of the main body of the packaging bag.
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Description

Technical Field

[0001] This utility model relates to the field of food packaging bag technology, and in particular to a packaging bag for quick-frozen foods. Background Technology

[0002] Packaging bags are bags used to package various goods, facilitating transportation and storage during production and distribution. They are widely used in daily life and industrial production. Food packaging bags are a type of packaging design; in daily life, product packaging bags were developed to facilitate the preservation and storage of food. Food packaging bags are thin-film containers that come into direct contact with food and are used to hold and protect it. Food packaging bags also include packaging bags for frozen foods. Traditional packaging bags for frozen foods have some drawbacks. During the freezing process, the food expands in volume, causing the bag opening to open and preventing the bag from sealing properly. This loss of airtightness allows the food to come into contact with outside air, accelerating oxidation and spoilage. Additionally, different foods with different odors can easily cross-contaminate, affecting food quality. Utility Model Content

[0003] The main objective of this invention is to provide a packaging bag for quick-frozen foods, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A packaging bag for quick-frozen food includes a main body of the packaging bag. A storage auxiliary mechanism is provided at the upper end of the main body of the packaging bag. The storage auxiliary mechanism includes a connecting seat fixedly connected to the upper end of the main body of the packaging bag. A storage opening is fixedly connected to the upper end of the connecting seat. An upper positioning strip is fixedly connected to the front end of the storage opening. A clamping strip is placed on the lower side of the front end of the storage opening near the upper positioning strip. A lower positioning strip is fixedly connected to the front end of the storage opening near the lower side of the clamping strip. A limiting groove is formed at the front end of the clamping strip. A spring ring is sleeved inside the limiting groove. A support pad is placed inside the storage opening. A clamping groove is formed on the outer side of the support pad.

[0005] Preferably, the upper end of the support pad is fixedly connected to an upper top cover, and the lower end of the upper positioning strip is in contact with the upper end of the clamping strip.

[0006] Preferably, the upper end of the lower positioning bar is in contact with the lower end of the clamping bar, and there are two sets of the upper positioning bar, the clamping bar, the lower positioning bar, and the spring ring.

[0007] Preferably, the clamping grooves correspond to the clamping strips, and the two sets of clamping strips are located at the front and rear ends of the receiving opening.

[0008] Preferably, the main body material of both sets of limiting grooves is rubber, and the lower end of the top cover is in contact with the upper end of the storage opening near the outer side of the support pad.

[0009] Preferably, a protective bottom edge is fixedly connected to the lower end of the main body of the packaging bag, and a protective side edge is fixedly connected to one end of the main body of the packaging bag. There are two sets of protective side edges, and both sets of protective side edges are connected to the protective bottom edge.

[0010] Compared with the prior art, the present invention has the following beneficial effects: By placing the clamping strips inside the upper and lower positioning strips, and then fitting the spring ring into the limiting groove, the spring ring clamps the two sets of clamping strips, and the two sets of clamping strips clamp the storage opening and lock it inside the clamping groove. This achieves the purpose of limiting the storage opening with the two sets of clamping strips, thereby preventing the storage opening from expanding excessively outward, thus keeping the main body of the packaging bag sealed. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of a packaging bag for quick-frozen foods according to the present invention. Figure 2 This is a schematic diagram of a storage auxiliary mechanism for a packaging bag used for quick-frozen foods according to the present invention. Figure 3 This is a partial structural diagram of a storage auxiliary mechanism for packaging bags of frozen foods according to the present invention. Figure 1 ; Figure 4 This is a partial structural diagram of a storage auxiliary mechanism for packaging bags of frozen foods according to the present invention. Figure 2 .

[0012] In the diagram: 1. Main body of the packaging bag; 2. Protective bottom edge; 3. Protective side edge; 4. Storage auxiliary mechanism; 41. Connecting seat; 42. Storage opening; 43. Upper positioning strip; 44. Clamping strip; 45. Lower positioning strip; 46. Limiting groove; 47. Spring ring; 48. Support pad; 49. Clamping groove; 410. Top cover. Detailed Implementation

[0013] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0014] like Figure 1-4As shown, a packaging bag for quick-frozen food includes a packaging bag body 1. A storage auxiliary mechanism 4 is provided at the upper end of the packaging bag body 1. The storage auxiliary mechanism 4 includes a connecting seat 41 fixedly connected to the upper end of the packaging bag body 1. A storage opening 42 is fixedly connected to the upper end of the connecting seat 41. An upper positioning strip 43 is fixedly connected to the front end of the storage opening 42. A clamping strip 44 is placed on the lower side of the front end of the storage opening 42 near the upper positioning strip 43. A lower positioning strip 45 is fixedly connected to the front end of the storage opening 42 near the lower side of the clamping strip 44. A limiting groove 46 is opened at the front end of the clamping strip 44. A spring ring 47 is sleeved on the inner side of the limiting groove 46. A support pad 48 is placed on the inner side of the storage opening 42. A clamping groove 49 is opened on the outer side of the support pad 48.

[0015] In this embodiment, the upper end of the support pad 48 is fixedly connected to the upper top cover 410. The lower end of the upper positioning strip 43 is in contact with the upper end of the clamping strip 44, and the upper end of the lower positioning strip 45 is in contact with the lower end of the clamping strip 44. There are two sets of the upper positioning strip 43, the clamping strip 44, the lower positioning strip 45, and the spring ring 47. The clamping groove 49 corresponds to the clamping strip 44. The two sets of clamping strips 44 are located at the front and rear ends of the storage opening 42. The main body material of the two sets of limiting grooves 46 is rubber. The lower end of the upper top cover 410 is close to the outer side of the support pad 48 and is in contact with the upper end of the storage opening 42.

[0016] Specifically, the user first pours the food into the main body 1 of the packaging bag through the storage opening 42, then inserts the support pad 48 into the storage opening 42, and makes the top cover 410 contact the storage opening 42. Then, the clamping strip 44 is inserted between the upper positioning strip 43 and the lower positioning strip 45, so that the clamping strip 44 corresponds with the clamping groove 49, and the two sets of clamping strips 44 clamp the storage opening 42. Then, the spring ring 47 is put into the inner side of the limiting groove 46, so that the spring ring 47 clamps the two sets of clamping strips 44, and the two sets of clamping strips 44 clamp the storage opening 42 and are clamped inside the clamping groove 49. In the process, under the clamping action of the two sets of clamping strips 44, the two sets of clamping strips 44 limit the storage opening 42, thereby preventing the storage opening 42 from expanding excessively outward. By placing the clamping strips 44 inside the upper positioning strip 43 and the lower positioning strip 45, and then putting the spring ring 47 into the limiting groove 46, the spring ring 47 clamps the two sets of clamping strips 44, and the two sets of clamping strips 44 clamp the storage opening 42 and lock it in the inner side of the clamping groove 49. This achieves the purpose of making the two sets of clamping strips 44 limit the storage opening 42, thereby preventing the storage opening 42 from expanding excessively outward, so that the main body 1 of the packaging bag remains sealed.

[0017] In this embodiment, a protective bottom edge 2 is fixedly connected to the lower end of the main body 1 of the packaging bag, and a protective side edge 3 is fixedly connected to one end of the main body 1 of the packaging bag. There are two sets of protective side edges 3, and both sets of protective side edges 3 are connected to the protective bottom edge 2.

[0018] Specifically, the combined effect of the protective bottom edge 2 and the protective side edge 3 prevents the opening at the edge of the main body 1 of the packaging bag from occurring.

[0019] Working principle: In use, the user first pours the food into the main body 1 of the packaging bag through the storage opening 42, then inserts the support pad 48 into the storage opening 42, and makes the top cover 410 contact the storage opening 42. Next, the clamping strip 44 is positioned between the upper positioning strip 43 and the lower positioning strip 45, thus defining the position of the clamping strip 44 and placing it at the designated position in the storage opening 42. This aligns the clamping strip 44 with the clamping groove 49, and the two sets of clamping strips 44 clamp the storage opening 42. Then, the spring ring 47 is placed inside the limiting groove 46, clamping the two sets of clamping strips 44, thus securing the storage opening 42 in the clamping groove 49. Inside the 9, the main body 1 of the packaging bag is then placed in the refrigerator for quick freezing, causing the food volume to expand and the storage opening 42 to expand outward. At the same time, under the clamping action of the two sets of clamping strips 44, the two sets of clamping strips 44 limit the storage opening 42, thereby preventing the storage opening 42 from expanding excessively outward. By placing the clamping strips 44 inside the upper positioning strip 43 and the lower positioning strip 45, and then putting the spring ring 47 into the limiting groove 46, the spring ring 47 clamps the two sets of clamping strips 44, and the two sets of clamping strips 44 clamp the storage opening 42 and lock it in the inside of the clamping groove 49. This achieves the purpose of making the two sets of clamping strips 44 limit the storage opening 42, thereby preventing the storage opening 42 from expanding excessively outward, thus keeping the main body 1 of the packaging bag sealed.

[0020] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A packaging bag for quick-frozen foods, comprising a packaging bag body (1), characterized in that: The upper end of the main body (1) of the packaging bag is provided with a storage auxiliary mechanism (4). The storage auxiliary mechanism (4) includes a connecting seat (41) fixedly connected to the upper end of the main body (1) of the packaging bag. The upper end of the connecting seat (41) is fixedly connected with a storage opening (42). The front end of the storage opening (42) is fixedly connected with an upper positioning strip (43). A clamping strip (44) is placed on the lower side of the front end of the storage opening (42) near the upper positioning strip (43). A lower positioning strip (45) is fixedly connected on the lower side of the front end of the storage opening (42) near the clamping strip (44). A limiting groove (46) is opened on the front end of the clamping strip (44). A spring ring (47) is sleeved on the inner side of the limiting groove (46). A support pad (48) is placed on the inner side of the storage opening (42). A clamping groove (49) is opened on the outer side of the support pad (48).

2. A packaging bag for quick-frozen foods according to claim 1, characterized in that: The upper end of the support pad (48) is fixedly connected to the upper top cover (410), and the lower end of the upper positioning strip (43) is in contact with the upper end of the clamping strip (44).

3. A packaging bag for quick-frozen foods according to claim 2, characterized in that: The upper end of the lower positioning bar (45) is in contact with the lower end of the clamping bar (44), and there are two sets of the upper positioning bar (43), clamping bar (44), lower positioning bar (45), and spring ring (47).

4. A packaging bag for quick-frozen foods according to claim 2, characterized in that: The clamping groove (49) corresponds to the clamping bar (44), and the two sets of clamping bars (44) are located at the front and rear ends of the receiving port (42).

5. A packaging bag for quick-frozen foods according to claim 2, characterized in that: Both sets of limiting grooves (46) are made of rubber. The lower end of the top cover (410) is close to the outside of the support pad (48) and contacts the upper end of the storage opening (42).

6. A packaging bag for quick-frozen foods according to claim 1, characterized in that: The lower end of the main body (1) of the packaging bag is fixedly connected to a protective bottom edge (2), and one end of the main body (1) of the packaging bag is fixedly connected to a protective side edge (3). There are two sets of protective side edges (3), and both sets of protective side edges (3) are connected to the protective bottom edge (2).