Stretch film: determining quality

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Always check rolls of stretch film for any of the following defects:

Possible Defects	End Result
Spots: Spots are caused by bad resin or poor mixing Black specks are from foreign material or charred plastic White spots are caused by additive build-up on cast stretch film	Stretch film breaks during stretching
Collapsed Cores: the rolls of pallet wrap are wound too tightly, crushing the paper	Mounting the stretch film roll becomes difficult
Telescoping: Caused by high tackifier levels or poor winding conditions	Core slides out of the roll
Wrinkling: caused by poor transition winding	Wrinkled stretch film
Edge Defects: caused by film layers that extend past the end of the roll	Stretch film tearing and failure
Gauge Bands: these are hard, thick bands of film caused by poor gauge control	Hard, thick bands of stretch wrap that can be difficult to remove