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 materials like plastic films are sealed to create airtight and moisture-resistant packages. The heat causes the materials to soften and bond, ensuring a secure closure. This method is widely utilized in various industries, including food packaging, medical supplies, and textiles. Equipment such as heat sealers or impulse sealers is often employed to achieve consistent and reliable seals. Heat sealing is efficient and helps maintain product freshness and safety during storage and transportation.