Definition
Low-density polyethylene film known for flexibility and good heat-seal performance, often used as a sealant layer.
Applications
- Sealant webs in laminates
- Liners
- Pouches requiring strong seals
Benefits
- Wide seal window
- Good toughness
- Reliable heat-seal behavior
Industry Examples
- Medical: LDPE-based sealants for peelable pouch designs (with proper formulation).
- Industrial: LDPE liners for moisture protection in boxed components.
- Electronics: acts as inner sealant layer in moisture barrier bags for semiconductor reels.
FAQ
Q: Is LDPE recyclable?
A: Often, especially when used in mono-material PE structures.
Q: How does LDPE differ from LLDPE?
A: LLDPE often offers higher puncture/toughness; blends are common.