LLDPE (Linear Low Density Polyethylene) has
a density range of 0.9150.925 g/cm3.
LLDPE replaces its predecessor Low Density
Polyethylene (LDPE) in many applications.
LLDPE is a linear polymer with a number of short branches,
made by copolymerization of ethylene with
short-chain alpha-olefins. (for example,
1-butene, 1-hexene and 1-octene). LLDPE has
higher tensile strength, impact and puncture resistance than LDPE.
Lower thickness (gauge) films can be blown,
compared with LDPE, with better
environmental stress cracking resistance but
is not as easy to process.
Globally, over 80% of LLDPE is used in film
applications such as food and non-food
packaging, shrink / stretch film, and
non-packaging uses. Major growth areas are
high clarity packaging, high barrier thin
films and active packaging that increases
shelf life and enhances flavor. Growth is
also occurring from the transition of items
presently packaged in rigid containers to
high quality flexible packages.