Daramic® HP™

Daramic HP is a high-performance polyethylene battery separator designed for starting, lighting, and ignition (SLI) lead-acid battery applications. Daramic HP is specially formulated to deliver excellent puncture and oxidation resistance, while also containing amorphous silica for high porosity providing lower electrical resistance.

Features:

  • Excellent for high under-hood temperature applications
  • High puncture and oxidation resistance
  • Lower backweb thickness
  • Available with glass mat for heavy duty applications
  • High porosity for lower electrical resistance

Benefits:

  • Improved yields and lower scrap rates
  • Lower risk of battery failures with thinner backweb
  • Increased processing speeds
  • Improved overall battery electrical performance
  • Reduced acid displacement

Features:

  • Excellent for high under-hood temperature applications
  • High puncture and oxidation resistance
  • Lower backweb thickness
  • Available with glass mat for heavy duty applications
  • High porosity for lower electrical resistance

Benefits:

  • Improved yields and lower scrap rates
  • Lower risk of battery failures with thinner backweb
  • Increased processing speeds
  • Improved overall battery electrical performance
  • Reduced acid displacement

Attributes Units Standard PE Separator Daramic HP
Backweb Thickness mm 0.200 0.200
Puncture Resistance N 7.5 13
Oxidation STability - CMD elongation after % Min 50 (20h PEROX) Min 100 (20h PEROX)
Electrical Resistance mΩ-cm2 70 55
Porosity % 60 60
Elongation CMD % 350 350
Backweb Oil % 11-12 11-12
Total Oil % 14-17 14-17
Moisture Content % 3 3
Dimensional Stability % -0.5 -0.5