POLYMERS > Polyethylene

In the world polyethylene market consumption of linear low density polyethylene LLDPE shows the most dynamic growth comparing to high density polyethylene HDPE and low density polyethylene LDPE consumption. Linear low-density polyethylene differs structurally from conventional low-density polyethylene because of the absence of long chain branching.  The linearity of LLDPE results from the different manufacturing processes of LLDPE and LDPE. In general, LLDPE is produced at lower temperatures and pressures by copolymerization of ethylene and such higher alpha olefins as butene, hexene, or octene.

Properties of LLDPE are interim between properties of LDPE and HDPE. However, LLDPE is characterized by more uniform distribution of polymer fraction per molecular mass (polydispersity) compared with LDPE. Main advantages of LLDPE compared with LDPE are: higher chemical stability; higher operational features both at low and high temperatures; higher stability against cracking; increased stability against puncture and tearing.

Linear Low Density Polyethylene is a firm, very flexible and slightly elastic thermoplastic, a little bit softener, easier to form and to press as High Density Polyethylene.

There are following types of LLDPE:

-    Film
-    Injection molding
-    Pipe
-    Roto-molding

Film Linear Low Density Polyethylene is widely used in manufacture of coverings, packing materials and items made by injection molding, and it is also applied in manufacture of stretch and setting films with low permeability. Films based on this polymer are stable against formation of cracks, have good strength, transparency and barrier properties against oxygen.

In 2011 Qatofin company, one of the markets leaders in LLDPE production, became a partner of SHINE.  

In packaging applications Qatofin LLDPE offer good aesthetics, printability, strength and good processing on todays high speed lines for use as film and, blend easily with LDPE recombining performance. Qatofin LLDPE resins can improve mechanical and welding efficiencies, including products for heavy duty bags, produce bags, agricultural film and others. Resins exhibit high gloss, low odor which are suitable for packaging applications under FDA regulations.
The production technology is licensed by the U.S. company Univation Technologies, holder of world patent of the Unipol PE gas phase process ( ex Union Carbide), which combines polymerization and state-of-the-art of the last generation catalysts.

SHINE company offers LLDPE Lotrene for films of different grades.  Lotrene is a registered trademark of Qatofin company


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