The melt blown process is a non-woven manufacturing system involving direct conversion of a polymer into continuous filaments, integrated with the conversion of the filaments into a random laid non-woven fabric.

The melt blown process involves the attenuation of the filaments using high-velocity hot air streams that impinge on the extruded filaments as they are emerged from the extrusion nozzles to obtain much finer filaments.

Melt blown Non-woven as the filter of the face masks, in recently because of the COVID-19 outbreak, the demand is increased so much. And the melt blown non-woven extruder becomes the hot sale machine besides the face mask making machine.

Various screw barrel sets with customerised design for melt blown non-woven fabric extrusion machines are available from JINYI.

Parameters

Material：38CrMoAl

Processing range：Ф12mm - Ф500mm

Screw effective length: 80000mm

Nitration case depth: 0.4mm-0.7mm

Nitriding hardness: 950-1100HV

Chromium coating thickness: 0.02mm-0.20mm

Surface roughness: Ra 0.4μm

Screw straightness: 0.015mm/m

Application: extrusion machine for non woven fabric extrusion machine