Shanghai Handheld Electromagnetic Induction Sealing Machine Recommended Manufacturer, Wholesale, Price, Where to Find It [Wenzhou Kaisyu Machinery Co., Ltd.] Principle: Utilizes the eddy current magnetic field generated when electromagnetic energy contacts plastic materials, causing the metal material to instantaneously heat up for practical magnetic thermal conversion purposes. The electromagnetic induction sealing machine, based on this principle, seals bottle containers with inner caps lined with aluminum foil inserts (sealing materials with attached aluminum foil) in an inductive manner. As the bottle container passes through the magnetic induction zone of the sealing machine, the aluminum foil insert inside the cap is sensed, causing the foil to instantly heat up and melt the adhesive layer on the insert to the bottle mouth, integrating into a seamless and aesthetically pleasing seal. A sealing machine is a mechanical device used to seal containers filled with packaging materials. After the product is placed into the packaging container, to ensure the product is sealed and preserved, maintaining product quality, and preventing product loss, the packaging container must be sealed, an operation that is completed on the sealing machine. In simple terms, a sealing machine refers to the mechanical device used to seal containers after the product is placed inside the packaging.