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Low-Density Polyethylene (LDPE)
Low-Density Polyethylene (LDPE)
A flexible thermoplastic polymer known for its excellent clarity, chemical resistance, and ease of processing
Key Properties
Physical Properties
- Density: 0.910-0.940 g/cm³
- Melting Point: 110-130°C
- Tensile Strength: 10-25 MPa
- Elongation at Break: 200-600%
Chemical Properties
- Chemical Resistance: Good
- Water Absorption: Very Low
- Solvent Resistance: Moderate
- Oxidation Resistance: Moderate
LDPE Variants
Film Grade LDPE
LDPE with excellent clarity and flexibility, ideal for thin film applications requiring good sealability and transparency.
Processing Methods: Blown film extrusion
Properties: Clarity, sealability, flexibility
Applications: Food packaging films, garment bags, shrink wraps, laminations
Injection Molding Grade LDPE
Flexible LDPE with excellent resilience and transparency, suitable for molded products requiring flexibility.
Processing Methods: Injection molding
Properties: Flexibility, resilience.
Applications: Lids, caps, houseware, squeezable bottles, toys
Extrusion Coating Grade LDPE
LDPE with good adhesion properties, designed for coating applications where moisture barrier is essential.
Processing Methods: Extrusion coating
Properties: Good adhesion to substrates.
Applications: Paper/board coating, Tetra Pak cartons, textile coating
LDPE Variants Synopsis
| Grade / Type | Processing Methods | Key Properties | Typical Applications |
|---|---|---|---|
| Film Grade LDPE | Blown film extrusion | Clarity, sealability, flexibility | Food packaging films, garment bags, shrink wraps, laminations |
| Injection Molding Grade LDPE | Injection molding | Flexibility, resilience, transparency | Lids, caps, houseware, squeezable bottles, toys |
| Extrusion Coating Grade LDPE | Extrusion coating | Good adhesion to substrates, moisture barrier | Paper/board coating, Tetra Pak cartons, textile coating |
