Definition
The force required to separate a sealed joint, indicating seal integrity and resistance to leaks under stress.
Applications
- Medical sterile barrier validation
- Industrial containment packs
Benefits
- Improves package integrity
- Reduces leakage
- Supports validation and compliance requirements
Industry Examples
- Medical: peelable seal strength windows validated per ISO 11607 methods.
- Industrial: high seal strength for powders to resist burst during drop tests.
- Electronics: validated to prevent seal failure in vacuum-sealed moisture barrier packaging.
FAQ
Q: Can seals be too strong?
A: Yes—over-strong seals can hinder openability and cause film tearing.
Q: What causes weak seals?
A: Low temperature, short dwell, contamination, or incompatible sealants.