Packaging device for cereal leisure food

By using a nested design of the inner discharge pipe and the outer discharge sleeve, along with a vibrating conveying mechanism and a quantitative mechanism, the problems of damage and inaccurate quantitative measurement of brittle foods during packaging are solved, achieving uniform quantitative packaging of food and improving packaging quality and efficiency.

CN224184552UActive Publication Date: 2026-05-01GUANGZHOU RESTAURANT GRP LIANGFENGYUAN (MAOMING) FOOD CO LTD
View PDF 1 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GUANGZHOU RESTAURANT GRP LIANGFENGYUAN (MAOMING) FOOD CO LTD
Filing Date
2025-05-12
Publication Date
2026-05-01

AI Technical Summary

Technical Problem

Existing cereal snack food packaging devices are prone to food damage due to the rotation of the agitator when handling brittle particles, and the impact force generated during the opening or closing of the metering valve can damage fragile foods, affecting packaging quality.

Method used

The device employs a nested design of an inner discharge pipe and an outer discharge sleeve, combined with a vibrating conveying mechanism and a quantitative mechanism. The flow rate is controlled by a cylinder-driven shaped baffle, and the motor drives an eccentric wheel to vibrate the outer discharge sleeve. This, along with a quantitative baffle and a weighing sensor, enables uniform quantitative packaging of food.

Benefits of technology

It ensures that food is not damaged during transportation, enabling uniform and rapid delivery and precise quantitative packaging, thus improving packaging quality and efficiency.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224184552U_ABST
    Figure CN224184552U_ABST
Patent Text Reader

Abstract

The utility model relates to the field of food packaging, and discloses a cereal leisure food packaging device which comprises a packaging machine support, a U-shaped plate is fixedly installed on the top face of the packaging machine support, a storage hopper is arranged on the top face of the U-shaped plate, and an inner discharging pipe is fixedly installed on the bottom face of the storage hopper. The outer surface of the inner discharging pipe is movably sleeved with an outer discharging sleeve, a vibration conveying mechanism connected with the outer discharging sleeve is arranged on the top face of the packaging machine support, a conveying pipe is arranged at the end, away from the inner discharging pipe, of the outer discharging sleeve, and a rectangular hole is formed in the front side of the conveying pipe. Through cooperation of a second air cylinder and a special-shaped baffle, the flow speed can be flexibly controlled according to food of different shapes in the outer discharging sleeve, the outer discharging sleeve is vibrated through the vibration conveying mechanism, it is guaranteed that the food is evenly and continuously discharged, packaging is convenient after the food is quantified through the quantifying mechanism, damage to the food in the conveying process can be reduced through the vibration mode, and the food quality is improved.
Need to check novelty before this filing date? Find Prior Art

Description

Packaging device for cereal snack foods Technical Field

[0001] This application belongs to the field of food packaging technology, specifically a packaging device for cereal snack foods. Background Technology

[0002] Cereal snacks are a type of snack made primarily from grains, nuts, and other natural ingredients. They are widely popular due to their rich nutritional value and diverse tastes. These foods not only provide energy but also help meet people's demand for healthy snacks. To protect the quality and freshness of cereal snacks, packaging is particularly important. Typically, these foods are packaged using high-barrier materials, such as composite films, to prevent the effects of moisture, oxygen, and light, thereby extending shelf life and maintaining their taste and nutritional components. Packaging formats are diverse, with common options including single-serving small packages and large bags, catering to the needs of different consumers while being convenient to carry and store.

[0003] For example, the utility model patent with announcement number CN221251819U discloses a food packaging device, which relates to the field of food packaging technology. It includes a feeding mechanism and a blocking mechanism fixedly installed on one side of the outer wall of the feeding mechanism. In this utility model, when in use, the drive motor installed on the fixed plate is started, and the drive motor drives the drive rod to rotate. Since multiple stirring blades are installed on the drive rod, the material inside the storage frame can be stirred, and there will be no blockage at the discharge hole. Then the material is allowed to reach the discharge pipe along the discharge hole. Through the action of the metering valve, the output of food is controlled by the preset time and weight, and the food enters the packaging tank along the feeding hopper. The whole process will not affect the efficiency of food packaging due to material blockage, thereby improving the use effect of the food packaging device.

[0004] However, in actual use, it was found that when the storage box contains brittle granular food, the method of relying on the rotation of the stirring plate to prevent the discharge hole from clogging is prone to damage to the food due to the mechanical action of the stirring plate, thereby reducing the quality of food packaging. Furthermore, although the device achieves quantitative food discharge and packaging by installing a metering valve at the bottom of the discharge pipe, the impact force generated during the opening or closing of the metering valve when the discharge pipe is full of food can damage the more fragile food and affect the quality of the final packaged food. Therefore, a packaging device for grain snack foods is provided. Summary of the Invention

[0005] The purpose of this application is to provide a packaging device for cereal snack foods in order to solve the problems mentioned above.

[0006] The technical solution adopted in this application is as follows: A packaging device for cereal snack food includes a packaging machine support, a U-shaped plate is fixedly installed on the top surface of the packaging machine support, a storage hopper is provided on the top surface of the U-shaped plate, an inner discharge pipe is fixedly installed on the bottom surface of the storage hopper, an outer discharge sleeve is movably sleeved on the outer surface of the inner discharge pipe, a vibrating conveying mechanism connected to the outer discharge sleeve is provided on the top surface of the packaging machine support, a conveying pipe is provided at the end of the outer discharge sleeve away from the inner discharge pipe, a rectangular hole is opened on the front side of the conveying pipe, one end of the outer discharge sleeve passes through the rectangular hole and extends into the interior of the conveying pipe, and a metering mechanism is provided inside the conveying pipe;

[0007] The vibrating conveying mechanism includes a motor, an eccentric wheel, a connecting rod, and a rectangular hole. The motor is fixedly installed on the top surface of the packaging machine bracket. An eccentric wheel is fixedly installed on the drive end of the motor. A connecting rod is hinged to the front side of the eccentric wheel. A rectangular hole is opened on the top surface of the U-shaped plate. The top end of the connecting rod passes through the rectangular hole and is hinged to the bottom surface of the outer discharge sleeve.

[0008] In a preferred embodiment, the metering mechanism includes a metering baffle, an adjusting plate, a limiting hole, a protrusion, a cylinder, and a push rod. Two metering baffles are hinged inside the conveying pipe. Two adjusting plates are arranged below the metering baffles inside the conveying pipe. Limiting holes are symmetrically opened on the sides of the conveying pipe. A protrusion is fixedly installed on the side of each of the two adjusting plates that is far apart from each other. One end of the protrusion passes through the limiting hole and extends to the outside of the conveying pipe. A cylinder is symmetrically fixedly installed on the side of the conveying pipe. The telescopic end of the cylinder is fixed to the bottom surface of the protrusion. A push rod is hinged on the side of each of the two adjusting plates that is close to each other. One end of the push rod is hinged to the bottom surface of the metering baffle.

[0009] In a preferred embodiment, a shaped baffle is movably inserted through the top surface of the outer discharge sleeve, and a second cylinder is fixedly installed on the top surface of the outer discharge sleeve, with the telescopic end of the second cylinder fixed to the bottom surface of the shaped baffle.

[0010] In a preferred embodiment, a plurality of fixed supports are fixedly installed on the bottom surface of the storage hopper, and the bottom ends of the plurality of fixed supports are fixed to the top surface of the U-shaped plate.

[0011] In a preferred embodiment, mounting blocks are fixedly installed on the left and right sides of the outer discharge sleeve, and a limiting connecting rod is movably inserted into the interior of the mounting block. The bottom end of the limiting connecting rod is fixed to the top surface of the U-shaped plate.

[0012] In a preferred embodiment, a shielding flexible connection is fixedly installed on the inner bottom surface of the rectangular hole, and the top end of the shielding flexible connection is fixed to the bottom surface of the outer discharge sleeve.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of this application are:

[0014] 1. In this application, due to the adoption of the above-mentioned scheme, food enters the outer discharge sleeve through the inner discharge pipe. At this time, cylinder two drives the shaped baffle to move upward, and the motor drives the eccentric wheel to rotate. The rotational motion is converted into the up-and-down vibration of the outer discharge sleeve through the connecting rod, which causes the food in the outer discharge sleeve to move evenly towards the conveying pipe and fall into the quantitative baffle, so as to facilitate real-time weighing of the food and facilitate the subsequent packaging of quantitative food. The device, through the cooperation of cylinder two and the shaped baffle, can flexibly control the flow rate for food of different shapes in the outer discharge sleeve. The vibration conveying mechanism makes the outer discharge sleeve vibrate to ensure that the food is discharged evenly and continuously. After being quantitatively quantified by the quantitative mechanism, it is easy to package. Moreover, the vibration mode can reduce the damage to the food during transportation and improve the quality of the food. Attached Figure Description

[0015] Figure 1 is a schematic diagram of the overall structure of this application;

[0016] Figure 2 is a schematic diagram of the conveying pipe structure of this application;

[0017] Figure 3 is a schematic diagram of the internal structure of the external discharge sleeve of this application;

[0018] Figure 4 is an enlarged structural diagram of point A in Figure 1 of this application.

[0019] The markings in the diagram are: 1. Packaging machine support frame; 2. U-shaped plate; 3. Storage hopper; 4. Inner discharge pipe; 5. Outer discharge sleeve; 6. Conveying pipe; 7. Rectangular hole; 8. Quantitative mechanism; 801. Quantitative baffle; 802. Adjusting plate; 803. Limiting hole; 804. Protrusion; 805. Cylinder 1; 806. Push rod; 9. Vibrating conveyor mechanism; 901. Motor; 902. Eccentric wheel; 903. Connecting rod; 904. Rectangular hole; 10. Irregular baffle; 11. Cylinder 2; 12. Fixed support column; 13. Mounting block; 14. Limiting connecting rod; 15. Shielding flexible connection; 16. Weighing sensor. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the embodiments of this application. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] Referring to Figures 1 and 2, a packaging device for a cereal snack food includes a packaging machine support 1. A U-shaped plate 2 is fixedly installed on the top surface of the packaging machine support 1. A storage hopper 3 is provided on the top surface of the U-shaped plate 2. Multiple fixed support columns 12 are fixedly installed on the bottom surface of the storage hopper 3, and the bottom ends of the multiple fixed support columns 12 are fixed to the top surface of the U-shaped plate 2. The packaging machine support 1 provides a stable support foundation for the entire packaging device, ensuring that the device will not shake or tip over during operation. The fixed support columns 12 provide support for the storage hopper 3, thereby enhancing the installation stability of the storage hopper 3. At the same time, the position of the storage hopper 3 is higher than the packaging components below, and the food to be packaged is smoothly discharged from the storage hopper 3 by gravity, improving the natural smoothness of material conveying and reducing the risk of blockage.

[0022] Referring to Figures 1, 2, and 3, an inner discharge pipe 4 is fixedly installed on the bottom surface of the storage hopper 3. An outer discharge sleeve 5 is movably fitted onto the outer surface of the inner discharge pipe 4. A shaped baffle 10 is movably inserted through the top surface of the outer discharge sleeve 5. A cylinder 2 11 is fixedly installed on the top surface of the outer discharge sleeve 5. The telescopic end of the cylinder 2 11 is fixed to the bottom surface of the shaped baffle 10. A vibrating conveying mechanism 9 connected to the outer discharge sleeve 5 is provided on the top surface of the packaging machine support 1. The inner discharge pipe 4 and the outer discharge sleeve 9 are connected through the inner discharge pipe 4 and the outer discharge sleeve 5. The nested design of the sleeve 5 ensures the normal discharge path of the material and also plays a certain guiding role for the outer discharge sleeve 5. Under the drive of the cylinder 11, the special-shaped baffle 10 can flexibly control the flow rate and velocity of the food when it is discharged from the outer discharge sleeve 5. The vibrating conveying mechanism 9 is connected to the outer discharge sleeve 5 and can make the outer discharge sleeve 5 vibrate, avoiding the accumulation and blockage of materials in the tube, improving the material conveying efficiency, and ensuring that the materials can enter the subsequent packaging process evenly and quickly.

[0023] Referring to Figures 1, 2, and 3, the vibrating conveyor mechanism 9 includes a motor 901, an eccentric wheel 902, a connecting rod 903, and a rectangular hole 904. The motor 901 is fixedly mounted on the top surface of the packaging machine bracket 1. The eccentric wheel 902 is fixedly mounted on the drive end of the motor 901. The connecting rod 903 is hinged to the front side of the eccentric wheel 902. A rectangular hole 904 is opened on the top surface of the U-shaped plate 2. The top end of the connecting rod 903 passes through the rectangular hole 904 and is hinged to the bottom surface of the outer discharge sleeve 5. The mechanism operates via the motor 901. The motor serves as a power source, driving the eccentric wheel 902 to rotate. The eccentric wheel 902 converts the rotational motion into the up-and-down vibration of the outer discharge sleeve 5 via the connecting rod 903. The rectangular hole 904 provides space for the movement of the connecting rod 903 while limiting its trajectory, ensuring the stability and accuracy of the vibration. In this way, the vibration frequency and amplitude of the outer discharge sleeve 5 can be precisely adjusted according to the motor speed, adapting to the conveying of grain snack foods with different particle sizes and flowability, effectively improving the adaptability and reliability of food conveying.

[0024] Referring to Figures 1 and 2, mounting blocks 13 are fixedly installed on the left and right sides of the outer discharge sleeve 5, respectively. A limiting connecting rod 14 is movably inserted into the interior of the mounting block 13, and the bottom end of the limiting connecting rod 14 is fixed to the top surface of the U-shaped plate 2. Through the cooperation of the mounting block 13 and the limiting connecting rod 14, a reliable limiting and guiding function is provided for the outer discharge sleeve 5 during vibration. When the outer discharge sleeve 5 is vibrating and conveying materials, the limiting connecting rod 14 can prevent it from deviating or shaking excessively, ensuring that the outer discharge sleeve 5 always vibrates stably in the vertical direction, ensuring the stability and continuity of material conveying, and avoiding material conveying obstruction or equipment failure due to the instability of the outer discharge sleeve 5.

[0025] Referring to Figures 1, 2, and 3, a conveying pipe 6 is provided at the end of the outer discharge sleeve 5 away from the inner discharge pipe 4. A rectangular hole 7 is opened on the front side of the conveying pipe 6. A shielding flexible connector 15 is fixedly installed on the bottom surface of the inner surface of the rectangular hole 7. The top of the shielding flexible connector 15 is fixed to the bottom surface of the outer discharge sleeve 5. One end of the outer discharge sleeve 5 passes through the rectangular hole 7 and extends into the interior of the conveying pipe 6. A metering mechanism 8 is provided inside the conveying pipe 6. The conveying pipe 6 facilitates the receiving of food conveyed by the outer discharge sleeve 5, thus facilitating the... The food is further conveyed to the metering mechanism 8. A flexible shielding connection 15 connects the outer discharge sleeve 5 and the conveying pipe 6, ensuring that the food can smoothly enter the conveying pipe 6 from the outer discharge sleeve 5, minimizing the possibility of food falling out or leaking. The flexible shielding connection 15 can be made of cloth. At the same time, the flexible shielding connection 15 can also adapt to the vibration of the outer discharge sleeve 5, preventing damage to the connection due to rigid connection, ensuring the sealing and integrity of the food conveying process, and providing good material conveying conditions for subsequent metering packaging.

[0026] A discharge pipe is installed at the bottom of the conveying pipe 6. The discharge pipe is located between the packaging bags, and the packaging bags are precisely positioned below the discharge pipe by the conveying device. When the quantitative mechanism 8 completes the quantitative measurement of food, the quantitative baffle 801 opens, and the food falls into the packaging bag below through the conveying pipe 6 and the discharge pipe. At this time, the packaging bag continues to move forward with the conveying device and enters the heat sealing area. In the heat sealing area, the heat sealing device is activated, and the opening edge of the packaging bag is quickly sealed by heating and pressurizing to form a complete package. Subsequently, the packaged product is conveyed to the labeling area, and the labeling machine automatically and accurately affixes the pre-designed label to the surface of the packaging bag. The label content covers key information such as product name, ingredient list, production date, and shelf life.

[0027] The heat sealing device and labeling machine technology involved in the above process are technologies that are widely used in the actual packaging field, and will not be elaborated on here.

[0028] Referring to Figures 1, 3, and 4, the quantitative mechanism 8 includes a quantitative baffle 801, an adjusting plate 802, a limiting hole 803, a protrusion 804, a cylinder 805, and a push rod 806. Two quantitative baffles 801 are hinged inside the conveying pipe 6, and two adjusting plates 802 are located below the quantitative baffles 801 inside the conveying pipe 6. Weighing sensors 16 are installed on the top surface of the two adjusting plates 802. A support plate is installed above the weighing sensors 16, and a rubber buffer pad is laid on top of the support plate. After the cereal snack food enters the conveying pipe 6 from the outer discharge sleeve 5, it falls onto the support plate. The rubber buffer pad cushions the falling food. Simultaneously, the weighing sensors begin to weigh the food on the support plate in real time. When the weight of the food reaches a preset value, the quantitative mechanism 8 automatically controls the adjusting plates 802 to open, achieving accurate food discharge and facilitating quantitative packaging.

[0029] Referring to Figures 1, 3, and 4, symmetrical limit holes 803 are provided on the sides of the conveying pipe 6. Protrusions 804 are fixedly installed on the opposite sides of the two adjusting plates 802. One end of each protrusion 804 passes through the limit hole 803 and extends to the outside of the conveying pipe 6. A cylinder 805 is symmetrically fixedly installed on the sides of the conveying pipe 6. The telescopic end of the cylinder 805 is fixed to the bottom surface of the protrusion 804. Push rods 806 are hinged to the adjacent sides of the two adjusting plates 802. One end of each push rod 806 is hinged to the bottom surface of the metering baffle 801. The metering baffle 801 can open and close under the action of the adjusting plates 802 and the push rods 806, precisely controlling the material flow. The discharge volume is adjusted to achieve quantitative packaging. By adjusting the up and down movement of the adjusting plate 802, the opening and closing angle of the quantitative baffle 801 can be changed, thereby flexibly adjusting the volume of material discharged each time to meet the needs of different packaging specifications, improving the quantitative accuracy and applicability of the packaging device. The limiting hole 803 can limit the protrusion 804 to ensure that the adjusting plate 802 moves stably in the vertical direction. The cylinder 805, as a power element, can accurately control the lifting height of the adjusting plate 802, thereby accurately adjusting the opening and closing degree of the quantitative baffle 801. This makes the control of the quantitative mechanism 8 more precise and stable, and the operation simple and convenient.

[0030] The implementation principle of a packaging device for a cereal snack food according to this application is as follows: The user pours the cereal snack food to be packaged into the storage hopper 3. Under the action of gravity, the food enters the inner discharge pipe 4 and the outer discharge sleeve 5. Then, cylinder 11 drives the shaped baffle 10 upwards, positioning its bottom near the center inside the outer discharge sleeve 5. At this time, the user starts the motor 901 in the vibrating conveyor mechanism 9. The motor 901 drives the eccentric wheel 902 to rotate, and the rotational motion is converted into the up-and-down vibration of the outer discharge sleeve 5 through the connecting rod 903. This causes the food inside the outer discharge sleeve 5 to move evenly towards the conveying pipe 6 and fall into the quantitative baffle 801. The bearing plate on the quantitative baffle 801 and the weighing... With the cooperation of a weight sensor, the food in the conveying pipe 6 is weighed in real time. When the weight of the food reaches the set value, the motor 901 stops running, the cylinder 805 drives the protrusion 804 and the adjusting plate 802 to move downward, and the push rod 806 pulls the two quantitative baffles 801 to open, so that the quantitative food is discharged through the conveying pipe 6 and enters the subsequent quantitative packaging stage. The device, through the cooperation of the cylinder 11 and the irregular baffle 10, can flexibly control the flow rate for different shaped foods in the outer discharge sleeve 5. The vibrating conveying mechanism 9 makes the outer discharge sleeve 5 vibrate to ensure that the food is discharged evenly and continuously. After being quantitatively quantified by the quantitative mechanism 8, it is easy to package, and the vibration mode can reduce the damage to the food during transportation and improve the quality of the food.

[0031] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A packaging device for cereal snack foods, comprising a packaging machine support (1), characterized in that: A U-shaped plate (2) is fixedly installed on the top surface of the packaging machine support (1). A storage hopper (3) is provided on the top surface of the U-shaped plate (2). An inner discharge pipe (4) is fixedly installed on the bottom surface of the storage hopper (3). An outer discharge sleeve (5) is movably fitted on the outer surface of the inner discharge pipe (4). A vibrating conveying mechanism (9) connected to the outer discharge sleeve (5) is provided on the top surface of the packaging machine support (1). A conveying pipe (6) is provided at the end of the outer discharge sleeve (5) away from the inner discharge pipe (4). A rectangular hole (7) is opened on the front side of the conveying pipe (6). One end of the outer discharge sleeve (5) passes through the rectangular hole (7) and extends to the conveying pipe. Inside (6), a quantitative mechanism (8) is provided inside the conveying pipe (6); the vibrating conveying mechanism (9) includes a motor (901), an eccentric wheel (902), a connecting rod (903) and a rectangular hole (904). The top surface of the packaging machine bracket (1) is fixedly installed with a motor (901). The drive end of the motor (901) is fixedly installed with an eccentric wheel (902). The front side of the eccentric wheel (902) is hinged with a connecting rod (903). The top surface of the U-shaped plate (2) is provided with a rectangular hole (904). The top end of the connecting rod (903) passes through the rectangular hole (904) and is hinged to the bottom surface of the outer discharge sleeve (5).

2. The packaging device for a cereal snack food as described in claim 1, characterized in that: The metering mechanism (8) includes a metering baffle (801), an adjusting plate (802), a limiting hole (803), a protrusion (804), a cylinder (805), and a push rod (806). Two metering baffles (801) are hinged inside the conveying pipe (6). Two adjusting plates (802) are located below the metering baffles (801) inside the conveying pipe (6). Limiting holes (803) are symmetrically opened on the sides of the conveying pipe (6). The two adjusting plates (802) are far apart from each other. A protrusion (804) is fixedly installed on one side of the conveying pipe (6). One end of the protrusion (804) passes through the limiting hole (803) and extends to the outside of the conveying pipe (6). A cylinder (805) is fixedly installed symmetrically on the side of the conveying pipe (6). The telescopic end of the cylinder (805) is fixed to the bottom surface of the protrusion (804). A push rod (806) is hinged to the side of the two adjusting plates (802) that are close to each other. One end of the push rod (806) is hinged to the bottom surface of the metering baffle (801).

3. The packaging device for a cereal snack food as described in claim 1, characterized in that: The top surface of the outer discharge sleeve (5) is movably fitted with a shaped baffle (10), and the top surface of the outer discharge sleeve (5) is fixedly fitted with a cylinder two (11), the telescopic end of the cylinder two (11) being fixed to the bottom surface of the shaped baffle (10).

4. The packaging device for a cereal snack food as described in claim 1, characterized in that: The bottom surface of the storage hopper (3) is fixedly equipped with multiple fixed support columns (12), and the bottom ends of the multiple fixed support columns (12) are fixed to the top surface of the U-shaped plate (2).

5. The packaging device for a cereal snack food as described in claim 1, characterized in that: Mounting blocks (13) are fixedly installed on the left and right sides of the external discharge sleeve (5). A limiting connecting rod (14) is movably inserted into the inside of the mounting block (13). The bottom end of the limiting connecting rod (14) is fixed to the top surface of the U-shaped plate (2).

6. The packaging device for a cereal snack food as described in claim 1, characterized in that: A shielding flexible connector (15) is fixedly installed on the inner bottom surface of the rectangular hole (7), and the top end of the shielding flexible connector (15) is fixed to the bottom surface of the outer discharge sleeve (5).

Citation Information

Patent Citations

  • Food packaging device

    CN221251819U