The term describes a condition where a container is made airtight by fusion or sealing, preventing the passage of air or other gases. An example is a metallic can used for preserving food, where the lid is crimped and sealed to the body to protect the contents from spoilage. This type of closure is critical for maintaining product integrity and extending shelf life.
This method of sealing is vital in various industries because it ensures the preservation of the packaged material’s quality, prevents contamination, and controls humidity. The history of this technique extends back centuries, initially focused on protecting sensitive items from environmental degradation. Its impact is profound, safeguarding food supplies, pharmaceuticals, and electronic components from external factors that could compromise their effectiveness or functionality.
