A ventable packaging container
By setting micro-vent holes that are breathable but waterproof on the side wall of the packaging container, the problem of leakage caused by hot steam pressure during transportation is solved, achieving the effect of being breathable but not leaking.
Patent Information
- Application Number
- CN202521123848.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-03
- Publication Date
- 2026-06-23
- Estimated Expiration
- 2035-06-03
AI Technical Summary
Existing packaging containers are prone to leakage during transportation due to excessively large vents or the sealing film falling off, especially when hot food is contained under high internal pressure, making it difficult to maintain a tight seal.
A first micro vent hole with a diameter of 0.02mm-0.5mm is provided on the side wall of the container body to allow air to pass through without allowing water to pass through, thus ensuring the container's airtightness.
It achieves air permeability without leakage in the sealed state, avoids seal detachment or damage, maintains pressure balance inside and outside the container, and prevents liquid leakage.
Smart Images
Figure CN224393308U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of packaging container technology, and specifically refers to a packaging container that is breathable. Background Technology
[0002] With the increasingly fast pace of urban life, people have more and more limited time for dining. Many people now choose to order takeout to solve their hunger problem. Takeout containers are essential, and most existing containers are made of plastic, shaped like bowls, cups, or trays. They generally have a suitable lid to seal the opening and prevent leakage. The lid also has vents to release heat and relieve pressure, preventing the lid from being forced open due to excessive pressure inside the container. However, the vents are often too large, allowing liquid inside the container to leak out during transport.
[0003] Meanwhile, for some packaging containers sealed with plastic film, composite film, aluminum foil film, etc., there is no way to set a vent at the sealing position. During transportation, as the packaging container shakes, hot steam can easily push the sealing film open, causing the sealing film to fall off in parts, resulting in leakage. Utility Model Content
[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a packaging container that is breathable and not prone to leakage.
[0005] The objective of this utility model can be achieved through the following technical solutions:
[0006] A breathable packaging container includes a container body with an opening on the upper side of the container body, characterized in that: a plurality of breathable but waterproof first micro-vent holes are provided on the side wall of the container body.
[0007] This packaging container features a first micro-vent hole that is breathable yet waterproof. When hot drinks or food are contained within the container, regardless of whether the container is sealed with a lid or a sealing film, hot steam can escape through the first micro-vent hole. This prevents excessive internal pressure from causing the lid or sealing film to detach from the container and leak. At the same time, the first micro-vent hole is breathable yet waterproof, ensuring that liquid inside the container will not leak through it.
[0008] Gas molecules (such as air and water vapor) typically have a diameter of only 0.1-10 μm, which is smaller than the diameter of the first micro vent hole, and can easily pass through it. Liquid molecules, on the other hand, usually exist in the form of water droplets. Due to the fact that the overall diameter of the water droplet is much larger than the diameter of the first micro vent hole and the existence of the liquid surface tension on the surface of the water droplet, the water droplet has difficulty passing through the first micro vent hole, thereby achieving the function of the side wall of the container body being breathable but impermeable to water.
[0009] In the aforementioned breathable packaging container, the diameter of the first micro-vent is in the range of 0.02mm-0.5mm. Preferably, the diameter of the first micro-vent is 0.1mm.
[0010] In the aforementioned breathable packaging container, the wall thickness ranges from 0.1 mm to 2 mm. Preferably, the wall thickness of the packaging container is 1 mm.
[0011] In the aforementioned breathable packaging container, the first micro-vent is located on the upper part of the side wall of the container body, and the distance between the first micro-vent and the opening of the container body is less than the distance between the first micro-vent and the middle of the side wall. In actual use, whether the packaging container is holding solid or solid-liquid mixed food, or milk tea or soup that is entirely liquid, it is generally not filled to the level of the opening of the container body. The placement of the first micro-vent close to the opening of the container body allows it to be positioned above the liquid inside the container, thus providing better venting performance.
[0012] In the aforementioned breathable packaging container, the first micro-vents are clustered in one or more small areas.
[0013] In the aforementioned breathable packaging container, the first micro-vent holes are spaced apart circumferentially along the container body.
[0014] The first micro-vent holes are either concentrated in a small area or spaced out circumferentially, which are both conventional implementations of this packaging container. The choice can be made according to the shape and function of the packaging container.
[0015] In the aforementioned breathable packaging container, the main body of the container is a packaging bowl or a packaging cup, and the first micro-vent is located on the side wall near the rim of the bowl or cup. When the main body of the container is a packaging cup and the packaging cup is a direct drinking cup, the internal and external pressures of the packaging cup are kept consistent during drinking to ensure smooth water flow.
[0016] In the above-mentioned breathable packaging container, the main body of the container is a packaging tray, and the packaging tray has a plurality of accommodating cavities formed inside, and each accommodating cavity has a first micro-vent hole on the upper part of its side wall.
[0017] The aforementioned breathable packaging container includes an inner liner disposed within the container body. The inner liner is connected to the container body via an outwardly protruding upper edge. A gap exists between the bottom of the inner liner and the bottom of the container body, and a gap exists between the sidewall of the inner liner and the inner wall of the container body. A second micro-vent hole, which is breathable but waterproof, is provided on the sidewall of the inner liner. The diameter of the second micro-vent hole ranges from 0.02 mm to 0.5 mm.
[0018] For special packaging environments, such as situations requiring separation of soup and liquid or better heat preservation, an inner liner is installed inside the main packaging unit. The inner liner and the main container are sealed with a packaging lid. The design of the second micro vent in the inner liner prevents hot steam in the inner liner from blowing open the packaging lid, which helps to further improve the stability of the packaging container during operation. The second micro vent also makes the connection between the inner liner and the main container more secure, eliminating the need for recesses or connection holes on the inner liner to connect with the main container. This prevents drier ingredients in the inner liner from mixing with the soup in the main container, or vice versa.
[0019] Compared with the prior art, the technical effects of this utility model are as follows:
[0020] This invention features a first micro-vent hole on the container body that is breathable but waterproof. When hot drinks or food are contained in the container, regardless of whether the container is sealed with a lid or a sealing film, hot steam can be released through the first micro-vent hole. This prevents excessive internal pressure from causing the lid or sealing film to detach from the container and leak. At the same time, the first micro-vent hole is breathable but waterproof, so the liquid inside the container will not leak through the first micro-vent hole. Attached Figure Description
[0021] Figure 1 This is a partial enlarged view of the packaging bowl and the micro-vent hole of this utility model.
[0022] Figure 2 This is a schematic diagram of the structure of the tray of this utility model.
[0023] Figure 3 These are cross-sectional views and partial enlarged views of the packaging container with an inner liner according to this utility model.
[0024] In the diagram, 1 is the container body; 11 is the opening; 12 is the accommodating cavity; 2 is the inner liner; 21 is the upper edge; 3 is the packing cap; 4 is the first micro vent; and 5 is the second micro vent. Detailed Implementation
[0025] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.
[0026] This breathable packaging container includes a container body 1, with an opening 11 on the upper side and multiple breathable but waterproof micro-vent holes 4 on the side wall of the container body 1. By providing these breathable but waterproof micro-vent holes 4 on the container body 1, this packaging container allows hot vapor to escape through the micro-vent holes 4 when hot drinks or food are contained inside, regardless of whether the container is sealed with a lid 3 or a sealing film. This prevents excessive internal pressure from causing the lid 3 or sealing film to detach from the packaging container and leak. Simultaneously, the micro-vent holes 4 are breathable but waterproof, preventing liquid leakage from the packaging container. Gas molecules (such as air and water vapor) typically have a diameter of only 0.1-10 μm, which is smaller than the diameter of the first micro vent hole 4, and can easily pass through the first micro vent hole 4. Liquid molecules, on the other hand, usually exist in the form of water droplets. Due to the fact that the overall diameter of the water droplet is much larger than the diameter of the first micro vent hole 4 and the existence of the liquid surface tension on the surface of the water droplet, the water droplet has difficulty passing through the first micro vent hole 4, thereby achieving the function of the side wall of the container body 1 being breathable but impermeable to water.
[0027] Specifically, the diameter of the first micro-vent 4 ranges from 0.02mm to 0.5mm, preferably 0.1mm; the wall thickness of the packaging container ranges from 0.1mm to 2mm. Preferably, the wall thickness of the packaging container is 1mm. The first micro-vent 4 is located on the upper part of the side wall of the container body 1, and the distance between the first micro-vent 4 and the opening 11 of the container body 1 is less than the distance between the first micro-vent 4 and the middle of the side wall. In actual use, whether the packaging container is used to hold solid or solid-liquid mixed food, or milk tea or soup that is entirely liquid, it is generally not filled to the level of the opening 11 of the container body 1. The placement of the first micro-vent 4 close to the opening 11 of the container body 1 allows it to be positioned above the liquid inside the container body 1, thus providing better venting effect.
[0028] Furthermore, the first micro-vent holes 4 are concentrated in one or more small areas; or the first micro-vent holes 4 are spaced apart along the circumference of the container body 1. Both the concentration of the first micro-vent holes 4 in small areas and their spaced apart along the circumference are conventional implementations of this packaging container, and the choice can be made according to the shape and function of the packaging container.
[0029] like Figure 1 As shown, the main body of the container 1 is a takeaway bowl or takeaway cup, and the first micro-vent 4 is located on the side wall near the mouth of the bowl or cup.
[0030] like Figure 2 As shown, the container body 1 is a packaging tray, and several accommodating cavities 12 are formed inside the packaging tray. Each accommodating cavity 12 has a first micro exhaust hole 4 on the upper part of its side wall.
[0031] like Figure 3 As shown, the packaging container includes an inner liner 2, which is located inside the container body 1. The inner liner 2 is connected to the container body 1 via an outwardly protruding upper edge 21. There is a gap between the bottom of the inner liner 2 and the bottom of the container body 1, and a gap between the side wall of the inner liner 2 and the inner wall of the container body 1. A second micro-vent hole 5, which is breathable but waterproof, is provided on the side wall of the inner liner 2. The diameter of the second micro-vent hole 5 ranges from 0.02mm to 0.5mm. For some special packaging environments, such as situations requiring separation of soup and water or requiring better heat preservation, an inner liner 2 is installed inside the packaging body. The inner liner 2 and the container body 1 are sealed by a packaging lid 3. The design of the second micro-vent hole 5 in the inner liner 2 can prevent hot steam in the inner liner 2 from blowing open the packaging lid 3, which helps to further improve the stability of this packaging container during operation.
[0032] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection defined by the claims of the present utility model.
Claims
1. A breathable packaging container, comprising a container body (1), wherein an opening (11) is provided on the upper side of the container body (1), characterized in that: The container body (1) has a plurality of first micro vent holes (4) on its side wall; the diameter of the first micro vent holes (4) is in the range of 0.02mm-0.5mm.
2. The breathable packaging container according to claim 1, characterized in that: The wall thickness of the packaging container ranges from 0.1mm to 2mm.
3. The breathable packaging container according to claim 1, characterized in that: The first micro vent (4) is located on the upper part of the side wall of the container body (1). The distance between the first micro vent (4) and the opening (11) of the container body (1) is less than the distance between the first micro vent (4) and the middle of the side wall.
4. A breathable packaging container according to claim 3, characterized in that: The first micro-vent holes (4) are clustered in one or more small areas.
5. A breathable packaging container according to claim 3, characterized in that: The first micro-vent holes (4) are spaced apart along the circumference of the container body (1).
6. A breathable packaging container according to any one of claims 1-5, characterized in that: The container body (1) is a takeaway bowl or takeaway cup, and the first micro-vent hole (4) is located on the side wall near the mouth of the bowl or cup.
7. A breathable packaging container according to any one of claims 1-5, characterized in that: The container body (1) is a packing tray, and the packing tray has several accommodating cavities (12) formed inside. Each accommodating cavity (12) has a first micro exhaust hole (4) on the upper part of its side wall.
8. A breathable packaging container according to claim 7, characterized in that: The container includes an inner liner (2) which is located inside the container body (1). The inner liner (2) is connected to the container body (1) by an outwardly protruding upper edge (21). There is a gap between the bottom of the inner liner (2) and the bottom of the container body (1). There is a gap between the side wall of the inner liner (2) and the inner wall of the container body (1). The side wall of the inner liner (2) is provided with a second micro vent hole (5) that is breathable but not water-permeable. The diameter of the second micro vent hole (5) is in the range of 0.02mm-0.5mm.