Superior Puncture & Tear Resistance: Because secondary bags often carry bulk items, multiple inner pouches, or heavy trays, they require high-tensile LDPE or multilayer co-extruded films. This prevents accidental tearing during palletizing and transit.
Dust & Environmental Barrier: High-density seals ensure that airborne particles, dirt, and moisture cannot penetrate the outer protective layer during shipping and long-term storage in warehouses.
Cleanroom Compatibility & Low Particulate Generation: The packaging material itself must be manufactured in a cleanroom environment (Class 100,000) to ensure zero particulate contamination when transferred to medical clean areas.
Easy Separation & Static Control: Anti-static formulation is essential to allow medical staff to peel or open the outer package smoothly without static attraction pulling dust onto the sterile inner pouch.
Clear Visibility & Labeling Area: Excellent film clarity allows warehouse personnel to visually verify inner contents, barcodes, and sterilization indicators without opening the outer shield.
By utilizing high-grade, compliant PE secondary packaging, medical device manufacturers ensure that the primary sterile barrier remains 100% intact from factory to end-user.