Text Box:  2011 Hi-Tech International 				   													Wednesday, January 18, 2012

Stretch Film Extrusion

 

Stretch film is the most commonly solution used in flexible packaging. It is wrapped around pallet to keep the items tightly bound, to improve stability of products or packages and to protect them against weather during transportation and storage. The stretch film has generally a thickness ranging from 12 to 25 microns. Stretch film is made of a multilayer co-extruded structure (up to 50 layers) based on C4/C6/C8 and metallocene.

The properties requested to stretch film are above all elasticity, break strength,puncture resistance, tear resistance, cling effect, clarity, thickness constancy and static discharge. The most common stretch wrap material is linear low-density polyethylene or LLDPE produced by butene, hexene and octene.  

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