Working principle of aluminum foil sealing machine

Aluminum Foil Sealing Machine, as a conventional packaging equipment, has been widely used in multiple industries such as food, medicine, cosmetics, etc. It uses the principle of electromagnetic induction to fuse the aluminum foil sheet with the bottle mouth, thereby achieving product sealing and preservation. Next, we will delve into the working principle, advantages, and application areas of Aluminum Foil Sealing machines.

1.Working principle

When the aluminum foil sealing machine is working, the AC power supply is converted into DC power through a rectifier, and then supplied to a high-frequency oscillator to generate high-frequency current. When this high-frequency current passes through the high-frequency coil, a strong magnetic field is generated around it.
When the aluminum foil passes through the induction zone of the sealing machine, a strong magnetic field will penetrate the aluminum foil and generate strong eddy currents within it. Due to the inherent resistance of aluminum foil, these eddy currents can quickly generate a large amount of heat inside the foil, causing it to melt locally.
At the same time, the pressure device of the sealing machine will apply a certain amount of pressure to the aluminum foil sheet, making it tightly adhere to the mouth of the container. As the aluminum foil melts, it will tightly bond with the container mouth under pressure, forming a complete and sealed seal.
Throughout the entire process, the sealing machine precisely controls parameters such as heating time, pressure, and temperature through a control system to ensure the quality and stability of the sealing. At the same time, the sealing machine is also equipped with safety protection devices, such as overheating protection, overload protection, etc., to ensure the safety and reliability of operation.

2.Advantages

Fast sealing speed: The aluminum foil sealing machine adopts the principle of electromagnetic induction, resulting in fast sealing speed;
Good sealing quality: The aluminum foil sealing machine has a flat and beautiful seal, and has good sealing performance, which can effectively prevent the penetration of gas, water, and microorganisms;
Easy to operate: adopting automated design reduces the skill requirements of operators;
Wide application range: suitable for sealing various materials, including glass, plastic, etc.

3.Application

Food industry: Aluminum foil sealing machine is used for sealing various canned foods, instant noodles, seasonings and other products, effectively extending product shelf life, maintaining food freshness and taste.
Pharmaceutical industry: Aluminum foil sealing machine is used for sealing pharmaceutical bottles and cans, ensuring the safety and integrity of drugs and preventing external contamination.
Cosmetic industry: Aluminum foil sealing machine is used for sealing cosmetic bottles and cans, ensuring product hygiene and quality, and improving market competitiveness.