LLDPE
Linear Low-Density Polyethylene
Glass Transition (Tg)
-110 °C
Melting Point (Tm)
120–125 °C
Density
0.915–0.925 g/cm³
CAS Number
25087-34-7
Recycling Code
♺ 4
Category
Commodity
Repeat Unit
–[CH₂–CH₂]ₓ–[CH₂–CH(CₙH₂ₙ₊₁)]ᵧ–
The repeating unit is the smallest structural fragment whose repetition builds the whole chain. Subscripts show the relative share of each unit in copolymers.
Key Properties
Short-chain branching from α-olefin comonomer; superior puncture and tear resistance versus LDPE.
Applications
Heavy-duty film, agricultural film, liners, rotomoulding.