Definition
A material property—common in foil—where the web holds a crease without springing back.
Applications
- Twist-wrap applications
- Specialty overwraps
Benefits
- Improves wrap retention
- Enhances hand-feel
- Enables shape-holding packaging
Industry Examples
- Medical: foil-laminate packets that must stay folded/closed during handling.
- Industrial: foil wraps for small parts that need a set fold for containment.
- Electronics: utilized in foil-based EMI shielding wraps that must retain shape around sensitive components during assembly.
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FAQ
Q: Do plastics have dead fold?
A: Most plastics spring back—foil provides the dead-fold behavior.
Q: Can dead fold be engineered without foil?
A: Some paper/foil hybrids can approximate, but not identical.