A sealing machine is a device used to close packages securely, ensuring that their contents remain protected from contamination and spoilage. These machines are commonly used in various industries, including food packaging, pharmaceuticals, and electronics. They can seal different types of materials, such as plastic, metal, and paper, using methods like heat sealing or vacuum sealing. Sealing machines come in various sizes and designs, from small handheld units to large industrial machines. They help improve efficiency in packaging processes and reduce waste by providing airtight seals. Proper sealing is essential for maintaining product quality and extending shelf life.