Melt Fracture in PE film

Melt fracture a/k/a “sharkskin” or “applesauce” occurs in LLDPE film. To say that much has been written on the subject is an understatement.  Entire books and dissertations abut melt fracture have been written by polymer chemists a lot smarter than me.  Still there is not total agreement on the causes.  Personally, I have a hypothesis …

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