heat sealing

Heat sealing is a process used to join two thermoplastic materials by applying heat and pressure. When heated, the materials melt at their contact surfaces, allowing them to fuse together as they cool and solidify. This technique creates a strong, airtight, and watertight seal, often used in packaging, medical devices, and plastic bags. The key is controlling temperature and pressure to ensure a secure bond without damaging the materials, resulting in a durable connection that maintains the integrity of the contents inside.