Header Bags in Pharmaceutical and Diagnostic Packaging
In pharmaceutical and diagnostic supply chains, packaging must allow access to sterilants and protect products during long and complex logistics. Header bags are designed precisely for this dual mandate: a breathable header (commonly Tyvek®) allows sterilization by gas or vapor, while a high-barrier, non-porous body (barrier foil or film) preserves sterility by minimizing the entry of moisture and oxygen over time. When combined with inner packages (often pouches made from Tyvek sterilization reels), header pouches form a strong, compliant system from the clean room to the point of use. What exactly is a header bag? A header bag combines two functional zones: Breathable Header: Typically Tyvek® or, in some EO applications, reinforced medical paper. The head accepts sterilant (e.g. ethylene oxide) and allows aeration. Tyvek® is preferred for its low lint, puncture resistance, and compatibility with oxidative sterilants (e.g., VHP/plasma). Barrier Body: A laminate such as aluminum foi...