Relation between bubble stability in the film blowing process and MFI uri icon


  • Several HDPE resins with different bubble film stability were tested in a melt flow indexer using the typical die (L = 8 mm, D = 2.095 mm) and a zero die (L = 1.3 mm, D = 2.095 mm) at two different loads (21.6 kg and 5 kg). A direct correlation was found between the MFI results and the bubble stability.

Publication date

  • November 25, 2009