Aging Effects: Packaging materials can age over time (embrittlement, loss of strength, degradation of sealing properties), which can affect sterility barriers and physical protection properties. All performance must be met by the end of the validity period.

Difficulty in Prediction: The accelerated aging test model has limitations, and the predicted shelf life requires final confirmation from real-time aging data, posing a risk of uncertainty.

Synergistic aging of products and packaging: Ensure that the interaction between the product itself (e.g., pharmaceutical coatings, biomaterials) and packaging does not lead to degradation or the production of harmful substances during the expiration date.

Precision and fragility: Many instruments (such as minimally invasive surgical instruments, implants, catheters, sensors, and optical components) are extremely delicate, fragile, and easily deformable, and are extremely sensitive to shock, vibration, static pressure, and wear. Custom cushioning and fastening designs are required.

Special environmental protection: It can be highly sensitive to humidity (moisture absorption leads to performance changes), oxygen (causes oxidation), light (degradation), temperature fluctuations (affects material properties and biological activity), etc., requiring highly barrier materials or special protective measures.

Cleanliness and dust-free: Particulate and fiber contamination must be strictly controlled in packaging materials and processes, especially for implantable devices and in vivo diagnostic devices.

Tamper-proof/anti-tampering: ensuring that the product has not been opened illegally before reaching the end user, is a security and regulatory requirement (e.g., open the package).