Heat sealing is a process used to join two or more materials together by applying heat and pressure. This technique is commonly used in packaging, where plastic films are sealed to create airtight and moisture-resistant packages. The heat causes the materials to soften and bond, ensuring a secure closure. The process can be performed using various methods, including impulse sealing and continuous sealing. Each method has its own advantages, depending on the materials and production requirements. Heat sealing is widely used in industries such as food packaging, medical supplies, and consumer goods, providing an efficient way to protect products.