Fermented food storage container cover and storage container
By installing a waterproof and breathable membrane and vents on the lid of the fermented food storage container, the problems of gas accumulation inside the container and external contamination are solved, achieving automatic venting and prevention of external contamination, thus ensuring the safety and quality of food preservation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU ZHENGXIN FOOD CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-06-02
AI Technical Summary
Existing fermented food storage containers lack effective venting functions, leading to increased pressure due to gas accumulation and external air pollution, which affects food preservation effectiveness and safety.
Design a lid containing a waterproof and breathable membrane, which is connected to the lid body through a through hole to achieve automatic venting and prevent outside air from entering. The breathable membrane and the lid body are fixed by ultrasonic heat fusion welding, which is suitable for containers of different materials.
It enables the automatic discharge of gas from inside the container, maintains the balance of internal and external air pressure, prevents external contamination, and ensures food safety and preservation effect.
Smart Images
Figure CN224312341U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of storage device technology, and more specifically relates to a lid and storage container for fermented food. Background Technology
[0002] In the field of food preservation, fermented foods are highly favored for their unique flavor and nutritional value, making the performance of their preservation containers crucial. However, current containers available on the market for preserving fermented foods have many significant shortcomings and urgently need improvement.
[0003] Most existing containers for preserving fermented foods have simple structures and, while possessing a certain degree of airtightness, lack venting capabilities. It is well known that fermented foods produce a large amount of gas, such as carbon dioxide, during the fermentation process. When these gases accumulate inside the container and cannot be released in time, the internal pressure will continuously rise, potentially causing the container to burst. This not only results in food waste but may also pose a safety hazard.
[0004] Even when some containers are equipped with venting devices, their design has flaws. Firstly, venting is cumbersome, requiring users to frequently and manually activate the vent, increasing their workload and potentially leading to delayed venting, thus affecting food preservation. Secondly, venting cannot effectively prevent outside air from entering. Fermented foods have stringent storage requirements; the entry of outside air, especially air containing bacteria, dust, and other impurities, can easily contaminate the food and accelerate spoilage. For example, in enzyme production, frequent venting of ordinary containers during fermentation disrupts the ecosystem of beneficial bacteria like lactic acid bacteria, while simultaneously allowing a large proliferation of other microorganisms, severely impacting enzyme quality.
[0005] Therefore, a new type of fermented food preservation container with good venting performance is of great practical significance. Utility Model Content
[0006] The purpose of this invention is to provide a lid and container for storing fermented foods that facilitates venting and prevents air from entering.
[0007] According to one aspect of the present invention, a lid for a fermented food preservation container is provided, comprising:
[0008] A connecting part used to connect to the container body;
[0009] And a cover for covering the opening of the container body;
[0010] The covering part has a through hole, and the through hole is covered with a waterproof and breathable membrane that allows only gas to pass through but not liquid. The outer edge of the waterproof and breathable membrane protrudes from the outer edge of the through hole.
[0011] The waterproof and breathable membrane is connected to the cover by ultrasonic hot-melt welding.
[0012] In some embodiments, the waterproof and breathable membrane is PTFE.
[0013] In some embodiments, the size of the through hole is between 1 mm and 5 mm.
[0014] In some embodiments, the area of the waterproof and breathable membrane is more than 6 times the area of the through holes.
[0015] In some embodiments, the outer edge of the waterproof and breathable membrane protrudes beyond the junction between the waterproof and breathable membrane and the cover.
[0016] In some embodiments, the space enclosed at the junction of the waterproof and breathable membrane and the cover portion serves as a buffer zone for gas passage.
[0017] According to another aspect of the present invention, a storage container for fermented food is provided, comprising:
[0018] The container itself is used to hold fermented foods that produce gas;
[0019] A lid, connected to the container body, covers the opening of the container body.
[0020] In some embodiments, the connection between the cover and the container body includes threaded connection, snap-fit, or ultrasonic heat fusion welding.
[0021] Its beneficial effects are as follows: The fermented food preservation device of this utility model achieves communication between the inside and outside of the container through the cooperation of the waterproof and breathable membrane and the through hole on the lid. After the food in the preservation container produces gas, the gas in the container is discharged due to the pressure difference between the inside and outside. After the gas in the container is discharged, the external gas will not enter the container because the pressure inside and outside is the same, thus ensuring the safety of the food and preventing the preservation container from exploding; it also facilitates the preservation and transportation of fermented food.
[0022] In addition, this utility model has a simple structure and achieves automatic venting. Compared with manual venting, it can achieve the effect of instant venting and ensure the safety of food in the storage container. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the internal structure of a fermented food preservation container lid according to one embodiment of the present invention;
[0024] Figure 2 This is a schematic diagram of the external structure of a fermented food preservation container lid according to one embodiment of the present invention;
[0025] Figure 3This is a schematic diagram of the structure of a fermented food preservation container according to one embodiment of the present invention;
[0026] Figure 4 This is a schematic diagram of the structure of a fermented food preservation container according to another embodiment of the present invention. Detailed Implementation
[0027] The present invention will now be further described with reference to the accompanying drawings.
[0028] Figure 1 The illustration schematically shows a storage container for fermented food according to this utility model. For example... Figure 1 As shown, a lid 1 for a fermented food preservation container includes a connecting part 11 for connecting to the container body 2, and a covering part 12 for covering the opening of the container body 2. The covering part 12 has a through hole 3, and a waterproof and breathable membrane 4 that allows only gas to pass through but not liquid is covered at the through hole 3. The outer edge of the waterproof and breathable membrane 4 protrudes beyond the outer edge of the through hole 3. This ensures a more secure connection of the waterproof and breathable membrane 4 to the lid 1, preventing it from falling off after a period of use. The waterproof and breathable membrane 4 is located on both the inner and outer sides of the lid. The waterproof and breathable membrane 4 is connected to the lid 1 by ultrasonic heat fusion welding. In practical applications, the ultrasonic frequency for ultrasonic heat fusion welding of the waterproof and breathable membrane 4 to the lid 1 is within 50 kHz, and the welding time is within 10 seconds. Adjustments can be made according to the material used in practical applications. This ensures the connection between the lid 1 and the waterproof and breathable membrane 4 without damaging the membrane. The waterproof and breathable membrane is a PTFE (polytetrafluoroethylene) membrane or a PE (polyethylene) membrane. The microporous structure of the PTEF or PE membrane allows gas and water vapor to pass through while blocking liquid water, thus achieving a breathable yet leak-proof effect. The diameter of the through-holes 3 is between 1mm and 5mm. This facilitates the transportation of the storage container and prevents leakage. The area of the waterproof and breathable membrane 4 is more than 6 times the area of the through-holes 3. The outer edge of the waterproof and breathable membrane 4 protrudes from the connection between the waterproof and breathable membrane 4 and the covering part 12. The space enclosed by the connection between the waterproof and breathable membrane 4 and the covering part 12 serves as a buffer zone for gas passage. When fermented food produces a large amount of gas, it needs to be released in a timely manner; therefore, increasing the area of the waterproof and breathable membrane 4 provides a buffer for the gases that need to be released.
[0029] like Figure 2 and Figure 3As shown, a storage container for fermented food includes a container body 2 and a lid 1 for holding the fermented food that produces gas. The container body 2 includes a bottom and a peripheral wall, and the space formed by the bottom and the peripheral wall is used to hold the fermented food that produces gas. The lid 1 is connected to the container body and covers the opening of the container body 2. The lid 1 covers the opening of the container body 2 and completely encloses the opening of the container body 2. The connection method between the lid 1 and the container body 2 includes threaded connection, snap-fit, or ultrasonic heat fusion welding. The above connection methods are suitable for different materials. For bottled storage containers, since the materials of the container body 2 and the bottle cap are relatively hard, threaded connection or snap-fit connection is used. For bowl-shaped storage containers, since the material of the container body 2 is relatively hard, if the lid 1 is a thin film, the container body 2 and the lid 1 are ultrasonically heat-fused; if the material of the lid 1 is relatively hard, the lid 1 and the container body 2 can be connected by snap-fit. If it is a bottled storage container, the part of the lid 1 that is threaded or snap-fitted to the container body 2 is the connecting part 11, and the bottom facing the interior space of the container body 2 is the covering part 12. If it is a bowl-shaped storage container, the part of the lid 1 that is ultrasonically heat-welded to the container body 2 is the connecting part 11, and the part facing the interior space of the container body 2 is the covering part 12.
[0030] The above are merely some embodiments of this utility model, used only to illustrate the technical solutions of this utility model, and not to limit it. For those skilled in the art, modifications to the technical solutions described in the foregoing embodiments, or equivalent substitutions for some or all of the technical features, without departing from the inventive concept of this utility model, all fall within the protection scope of this utility model.
Claims
1. A lid for a fermented food preservation container, characterized in that, include: A connecting part used to connect to the container body; And a cover for covering the opening of the container body; The covering part has a through hole, and the through hole is covered with a waterproof and breathable membrane that allows only gas to pass through but not liquid. The outer edge of the waterproof and breathable membrane protrudes from the outer edge of the through hole. The waterproof and breathable membrane is connected to the cover by ultrasonic hot-melt welding.
2. The lid of the fermented food preservation container according to claim 1, characterized in that, The waterproof and breathable membrane is a PTFE membrane or a PE membrane.
3. The lid of the fermented food preservation container according to claim 1, characterized in that, The size of the through hole is between 1mm and 5mm.
4. The lid of the fermented food preservation container according to claim 1, characterized in that, The area of the waterproof and breathable membrane is more than 6 times the area of the through holes.
5. The lid of the fermented food preservation container according to claim 1, characterized in that, The outer edge of the waterproof and breathable membrane protrudes from the junction of the waterproof and breathable membrane and the covering portion.
6. The lid of the fermented food preservation container according to claim 1, characterized in that, The space enclosed at the connection between the waterproof and breathable membrane and the cover portion serves as a buffer zone for gas passage.
7. A storage container for fermented food, characterized in that, include: The container itself is used to hold fermented foods that produce gas; The cover as described in claim 1 is connected to the container body and covers the opening of the container body.
8. The storage container for fermented food according to claim 7, characterized in that, The connection between the cover and the container body includes threaded connection, snap-fit, or ultrasonic heat fusion welding.