Packaging container with inner bag

Abstract

The application provides a packaging container with an inner bag, belonging to the technical field of containers. It solves the problem that the outer layer of the existing packaging container with peelable inner bag cannot use hard material. The packaging container with an inner bag comprises a container body and a cover. The container body comprises an outer shell and an inner bag in the outer shell. The cover comprises a cover body installed on the container body. The cover body is provided with an exhaust passage and an air supply passage. The exhaust passage is connected with the inner cavity of the inner bag. The air supply passage is connected with the chamber between the outer shell and the inner bag. A control valve for controlling whether the exhaust passage is in a through state is installed on the cover body. A manual inflation mechanism connected with the air supply passage and capable of inputting air into the air supply passage is also installed on the cover body. When the packaging container is made of hard material, the content can still be smoothly discharged, air reflux into the inner cavity of the inner bag can be avoided, and the shelf life of the content can be prolonged.

Description

Technical Field

[0001] The present invention belongs to the technical field of containers and relates to a packaging container, in particular to a packaging container with an inner bag. Background Art

[0002] A packaging container generally refers to a packaging device used in accordance with certain technical specifications during the circulation of goods to protect them, facilitate storage, and facilitate transportation. There is a wealth of literature on packaging containers, such as the laminated peelable container (Application No. 96190328.7). During the discharge process, the inner layer peels away from the outer layer, shrinking the inner layer and allowing air to enter between the inner and outer layers, preventing air from mixing with the contents and extending the shelf life. To facilitate the control of content discharge, various packaging containers have been proposed, such as the airflow control device for the peelable inner bag container (Application No. 202021295905.3).

[0003] The outer layer of the packaging container must be made of a deformable and repositionable material, such as PP or PETG. Some consumers have material preferences, such as preferring glass, metal, or ceramic over resin materials like PP or PETG. In other words, using these materials for the outer layer of the packaging container can hinder the contents from being released. Summary of the Invention

[0004] The present invention provides a packaging container with an inner bag. The technical problem to be solved by the present invention is how to enable the packaging container with an inner bag and a rigid outer shell to discharge the contents smoothly.

[0005] The technical problem to be solved by the present invention can be achieved through the following technical solutions: a packaging container with an inner bag, comprising a container body and a lid, the container body comprising an outer shell and an inner bag located in the outer shell, the lid comprising a cover body installed on the container body, the cover body having a discharge channel and an air supply channel, the discharge channel being connected to the inner cavity of the inner bag, and the air supply channel being connected to the chamber between the outer shell and the inner bag; a control valve for controlling whether the discharge channel is in a through state is installed on the cover body, and a manual pumping mechanism is also installed on the cover body, which is connected to the air supply channel and can input air into the air supply channel.

[0006] The contents are filled in the inner cavity of the inner bag of the packaging container; when taking out the contents, a manual air pumping mechanism is first used to input air into the cavity between the outer shell and the inner bag, so that the air pressure in the cavity between the outer shell and the inner bag is greater than the external air pressure; then the control valve is opened, and the inner bag is gradually squeezed and deformed under the action of the air pressure in the cavity between the outer shell and the inner bag, and the contents in the inner bag are discharged from the discharge channel.

[0007] Compared to existing technologies, the outer shell of this packaging container can be made of hard materials such as glass, metal, and ceramic. This provides a certain degree of rigidity, making it less prone to deformation and less prone to self-recovery after extrusion deformation. In other words, this packaging container, while made of hard materials, can still smoothly discharge its contents while preventing air from flowing back into the inner bag, thereby extending the shelf life of the contents. By controlling the number of times the manual air pump mechanism is operated, this packaging container controls the total amount of air entering the chamber between the outer shell and the inner bag, thereby indirectly controlling the pressure, speed, and total amount of contents discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the cross-sectional structure of the packaging container.

[0009] Figure 2 It is a structural schematic diagram of a local structure in a packaging container with the discharge channel in a cut-off state.

[0010] Figure 3 It is a structural diagram of a local structure in a packaging container with the discharge channel in a through-state.

[0011] Figure 4 It is a schematic diagram of the three-dimensional structure of the connecting sleeve.

[0012] In the figure, 1 is the container body; 1a is the outer shell; 1a1 is the cavity part; 1a2 is the rim part; 1a3 is the neck part; 1b is the inner bag; 1b1 is the bag part; 1b2 is the connecting part; 1b3 is the folding edge part; 1c is the connecting sleeve; 1c1 is the ring part; 1c2 is the tube part; 1c3 is the air guide groove; 2 is the lid; 2a is the cover body; 2a1 is the protective cover part; 2a2 is the sealing part; 2a2a is the sealing lip; 2a2b is the pressing surface; 2a3 is the discharge channel; 2a4 is the air supply channel; 2b is the control valve; 2b1 is the valve stem; 2b2 is the sealing member; 2b3 is the elastic member; 2c is the manual pumping mechanism; 2c1 is the pumping chamber; 2c2 is the pumping piston; 2c3 is the pumping rod; 2c4 is the first diaphragm; 2c5 is the second diaphragm; 2c6 is the pressure cap. DETAILED DESCRIPTION

[0013] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0014] like Figures 1 to 4 As shown, the packaging container includes a container body 1 and a lid 2 mounted on the container body 1 .

[0015] The container body 1 comprises an outer shell 1a made of a hard material and an inner bag 1b located within the outer shell 1a. The hard material is glass, metal, or ceramic. The outer shell 1a comprises a cavity 1a1, a rim 1a2, and a neck 1a3 connecting the cavity 1a1 and the rim 1a2. The accompanying drawings in this specification illustrate a barbed connection between the lid 2 and the container body 1, whereby the hook of the barb rests against the bottom surface of the rim 1a2. Alternatively, a threaded connection structure may be employed between the container body 1 and the lid 2, replacing the barbed connection. In this case, the rim 1a2 would have threads.

[0016] The inner bag 1b comprises a bag portion 1b1 located within the cavity portion 1a1, a connecting portion 1b2 located within the neck portion 1a3, and a flange portion 1b3 located above the rim portion 1a2. The inner bag 1b has a high barrier layer made of aluminum foil or EVOH.

[0017] The container body 1 also includes a connecting sleeve 1c positioned between the outer shell 1a and the inner bag 1b. The connecting sleeve 1c includes a ring portion 1c1 positioned above the rim portion 1a2 and a tube portion 1c2 positioned within the neck portion 1a3. When the inner bag is not installed in the outer shell 1a, the inner bag can be folded and stored within the tube portion 1c2, which facilitates packaging, transportation, and protects the inner bag. The rim portion 1b3 of the inner bag 1b is fixedly connected to the ring portion 1c1 of the connecting sleeve 1c. The tube portion 1c2 of the connecting sleeve 1c extends into the outer shell 1a from the opening, and the ring portion 1c1 abuts against the rim portion 1a2 to position the connecting sleeve 1c. This not only facilitates installation of the inner bag 1b within the outer shell 1a, improving the consistency of the inner bag 1b's installation state, especially preventing the inner bag 1b from completely falling into the outer shell 1a, but also facilitates subsequent filling of the contents into the inner bag 1b and improves the sealing between the lid 2 and the inner bag 1b. The outer surface of the connecting sleeve 1c features air guide grooves 1c3, which facilitate the entry of air into the chamber between the outer shell 1a and the inner bag 1b. This facilitates the preferential flow of air between the pouch portion 1b1 and the chamber portion 1a1, causing the pouch portion 1b1 to deflate before the connecting portion 1b2, thus facilitating smoother discharge of the contents. Multiple air guide grooves 1c3 are arranged around the perimeter of the connecting sleeve 1c, improving the uniformity of air distribution around the pouch portion 1b1 and ensuring smoother discharge of the contents.

[0018] The lid 2 includes a lid body 2a, a control valve 2b, and a manual inflating mechanism 2c. The lid body 2a is made of plastic. For ease of manufacture, the lid body 2a further comprises a protective cover 2a1 and a sealing portion 2a2 located within the protective cover 2a1. The barbs are fixedly connected to the protective cover 2a1. The sealing portion 2a2 has a sealing lip 2a2a that is embedded within the neck 1a3 of the container body 1 and abuts against the inner side surface of the inner bag 1b, thereby forming a seal between the sealing lip 2a2a and the inner side surface of the inner bag 1b. The sealing portion 2a2 has a pressing surface 2a2b that presses against the top surface of the flange 1b3 of the inner bag 1b. The ring portion 1c1 of the connecting sleeve 1c and the flange 1b3 of the inner bag 1b are squeezed between the rim 1a2 of the outer shell 1a and the sealing portion 2a2 of the lid body 2a, thereby forming a seal between the pressing surface 2a2b of the sealing portion 2a2 and the flange 1b3 of the inner bag 1b. A double seal is formed between the lid 2 and the inner bag 1b, which effectively improves the sealing performance and extends the shelf life of the contents.

[0019] The lid 2a has an exhaust channel 2a3 and an air supply channel 2a4. Exhaust channel 2a3 communicates with the inner cavity of the inner bag 1b, while air supply channel 2a4 communicates with the air guide groove 1c3. A control valve 2b is mounted on the lid 2a. This valve controls whether exhaust channel 2a3 is open. When the control valve 2b is in the open state, the contents of the inner bag 1b can be discharged through exhaust channel 2a3. When the control valve 2b is in the closed state, the contents remain in the inner bag 1b and air is prevented from entering the inner bag 1b through exhaust channel 2a3, thereby extending the shelf life of the contents.

[0020] A manual pumping mechanism 2c is mounted on the cover 2a and includes a pumping chamber 2c1 within the cover 2a and a pumping piston 2c2 within the chamber 2c1. A pumping rod 2c3 is provided on the cover 2a and connected to the pumping piston 2c2. An air supply channel 2a4 is connected to the bottom of the pumping chamber 2c1, allowing the pumping rod 2c3 to be pushed and pulled up and down, which in turn drives the piston, thereby introducing air into the air supply channel 2a4. A first diaphragm 2c4 is mounted on the sidewall of the pumping chamber 2c1, and a second diaphragm 2c5 is mounted on the pumping piston 2c2. The first diaphragm 2c4 prevents air in the air supply channel 2a4 from flowing back into the pumping chamber 2c1, while the second diaphragm 2c5 prevents air in the pumping chamber 2c1 from flowing back into the atmosphere.

[0021] The control valve 2b includes a valve stem 2b1 passing through the cover body 2a and a sealing member 2b2 installed on the valve stem 2b1. An elastic member 2b3 is also provided between the valve stem 2b1 and the cover body 2a. A pressure cap 2c6 is fixedly connected to the air pump rod 2c3. The axis of the valve stem 2b1 is arranged parallel to the axis of the air pump rod 2c3. When the pressure cap 2c6 moves downward, the pressure cap 2c6 can push the valve stem 2b1 to move and put the discharge channel 2a3 in a through state. According to actual conditions, the axis of the valve stem 2b1 and the axis of the air pump rod 2c3 can also be arranged to intersect. A linkage structure connected to the valve stem 2b1 is installed on the cover body 2a. When the pressure cap 2c6 moves downward, the pressure cap 2c6 drives the valve stem 2b1 to move through the linkage structure and puts the discharge channel 2a3 in a through state. The above structure and operation method have the advantages of simple structure and easy use.

[0022] When the inner bag 1b of the packaging container is filled with contents, the process of discharging the contents is explained to further illustrate the functions and advantages of each component. The operator holds the pressure cap 2c6 and pushes and pulls the pressure cap 2c6 up and down. The pressure cap 2c6 drives the air pump rod 2c3 and the air pump piston 2c2 up and down in turn, and in this process, air is input into the air supply channel 2a4. Figure 3 The dashed arrows in the middle indicate the direction of air flow; air enters the chamber between the pouch portion 1b1 of the outer shell 1a and the chamber portion 1a1 of the inner bag 1b through the air guide groove 1c3, where the air pressure in this chamber rises and becomes greater than the ambient air pressure. During the air supply phase, the pressure cap 2c6 should be prevented from pushing the valve stem 2b1 of the control valve 2b. Only when the contents need to be discharged should the pressure cap 2c6 be pushed downward further, which in turn pushes the valve stem 2b1 of the control valve 2b downward. This compresses and deforms the elastic member 2b3, and the sealing member 2b2 separates from the sealing surface, leaving the discharge channel 2a3 open. The contents are then discharged through the discharge channel 2a3 under the action of air pressure. Figure 3 The solid arrow in the middle indicates the direction of air flow. When the operator releases the pressure cap 2c6, under the elastic force of the elastic member 2b3, the valve stem 2b1 of the control valve 2b automatically moves to automatically switch the discharge channel 2a3 to the cut-off state.

Claims

1. A packaging container with an inner bag, comprising a container body (1) and a lid (2), wherein the container body (1) comprises an outer shell (1a), an inner bag (1b) located within the outer shell (1a), and a connecting sleeve (1c) located between the outer shell (1a) and the inner bag (1b), wherein an outer surface of the connecting sleeve (1c) is provided with an air guide groove (1c3); The outer shell (1a) comprises a cavity portion (1a1), a rim portion (1a2), and a neck portion (1a3) connecting the cavity portion (1a1) and the rim portion (1a2); the inner bag (1b) comprises a bag portion (1b1) located in the cavity portion (1a1), a connecting portion (1b2) located in the neck portion (1a3), and a flange portion (1b3) located above the rim portion (1a2); the connecting sleeve (1c) comprises a ring portion (1c1) located above the rim portion (1a2) and a tube portion (1c2) located in the neck portion (1a3); It is characterized in that The lid (2) comprises a lid body (2a) mounted on the container body (1), and the lid (2) further comprises a control valve (2b) and a manual air pumping mechanism (2c). The lid body (2a) is made of a plastic material, and the lid body (2a) further comprises a protective cover portion (2a1) and a sealing portion (2a2) located within the protective cover portion (2a1). The protective cover portion (2a1) and the rim portion (1a2) are fastened with a barb. The sealing portion (2a2) has a sealing lip (2a2a) embedded in the neck (1a3) of the container body (1) and abutting against the inner side surface of the inner bag (1b), and a seal is formed between the sealing lip (2a2a) and the inner side surface of the inner bag (1b); the sealing portion (2a2) has a pressing surface (2a2b) pressed against the top surface of the flange portion (1b3) in the inner bag (1b); the ring portion (1c1) of the connecting sleeve (1c) and the flange portion (1b3) of the inner bag (1b) are squeezed between the mouth edge portion (1a2) of the outer shell (1a) and the sealing portion (2a2) of the cover body (2a), and a seal is formed between the pressing surface (2a2b) of the sealing portion (2a2) and the flange portion (1b3) of the inner bag (1b); The cover (2a) is provided with an exhaust channel (2a3) and an air supply channel (2a4); the exhaust channel (2a3) is connected to the inner cavity of the inner bag (1b); and the air supply channel (2a4) is connected to the cavity between the outer shell (1a) and the inner bag (1b); A control valve (2b) is mounted on the cover body (2a), and is used to control whether the discharge channel (2a3) is in a through-flow state. The control valve (2b) comprises a valve stem (2b1) passing through the cover body (2a) and a sealing member (2b2) ​​mounted on the valve stem (2b1). An elastic member (2b3) is further provided between the valve stem (2b1) and the cover body (2a). A manual air pumping mechanism (2c) is mounted on the cover body (2a). The manual air pumping mechanism (2c) comprises an air pumping chamber (2c1) located in the cover body (2a) and an air pumping piston (2c2) located in the air pumping chamber (2c1). An air pumping rod (2c3) is provided on the cover body (2a), and the air pumping rod (2c3) is connected to the air pumping piston (2c2). The air pumping chamber (2c1) is connected to the air supply channel (2a4). The manual air pumping mechanism (2c) inputs air into the air supply channel (2a4). The air enters the chamber between the cavity portion (1a1) of the outer shell (1a) and the bag portion (1b1) of the inner bag (1b) through the air guide groove (1c3). The air pressure in the above-mentioned chamber increases and is greater than the external air pressure.

2. The packaging container with an inner bag according to claim 1, characterized in that: The outer shell (1a) is made of a hard material, and the inner bag (1b) has a high barrier layer.

3. The packaging container with an inner bag according to claim 1, characterized in that: The inner bag (1b) is fixedly connected to the connecting sleeve (1c).

4. The packaging container with an inner bag according to claim 1, characterized in that A pressure cap (2c6) is fixedly connected to the pumping rod (2c3), and the axis of the valve stem (2b1) is arranged parallel to the axis of the pumping rod (2c3). When the pressure cap (2c6) moves downward, the pressure cap (2c6) can push the valve stem (2b1) to move and put the discharge channel (2a3) into a through state. Or a pressure cap (2c6) is fixedly connected to the air pump rod (2c3), the axis of the valve stem (2b1) and the axis of the air pump rod (2c3) are arranged to intersect, and a linkage structure connected to the valve stem (2b1) is installed on the cover body (2a). When the pressure cap (2c6) moves downward, the pressure cap (2c6) can drive the valve stem (2b1) to move through the linkage structure and put the discharge channel (2a3) in a through state.

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