Thermal sealing is a process used to join materials together using heat. This technique is commonly applied in packaging, where heat is applied to the edges of plastic films or bags, causing them to melt and fuse together. The result is a strong, airtight seal that helps preserve the contents and extend shelf life. This method is widely used in various industries, including food packaging and electronics. By ensuring that products are securely sealed, thermal sealing helps prevent contamination and damage. Equipment like heat sealers and impulse sealers are often employed to achieve the desired results efficiently.