Meltblown Nonwoven

Meltblown Process

Melt-blown process is a step by step process in which high-velocity air blows a molten thermoplastic resin from an extruder die tip onto a conveyor or take-up screen to form a fine fibrous and self-bonding web. The fibers in the melt blown web are laid together by a combination of entanglement and cohesive sticking.

LeapThree's Meltblown filter media attributes & properties:

  • Random fiber orientation with smooth surface texture and circular cross-section.

  • Polymer options like PBT, PET, PP and PLA available basis attributes required for different end applications.

  • Lower to moderate web strength, deriving strength from mechanical entanglement and frictional forces.

  • Generally high opacity (having a high cover factor).

  • Fiber diameter ranging from 0.5 to 30 µm (multi-layer), but typically from 2-7µm.

  • A basic weight ranging between 10 and 350 g/m2 (multi-layer), typically 10-100 g/m2.

  • Lower diameter fibers provide larger surface area for better Filtration & Insulation characteristics.