2020-04-17
Melt blown fabric is the core material of mask,which
is mainly made of high melt index polypropylene
(melt blown material).This kind of melt blown fabric has many excellent fiber
structures which are lots of gaps inside,fluffy structure and good anti-wrinkle
ability.This kind of microfiber with unique capillary structure increases fiber
quantity and surface area per unit area, which makes the melt blown fabric good
filtration, shielding, heat insulation and oil absorption.
In face of the blowout demand of the melt blown
fabric as the core material of the face mask,XINDA has been speeding up research
and development of the technology applying to such field based on the existing
technical support.Recently,we have used our reciprocating single screw kneading
and extrudering system to produce melt blown material (MI 1500 +) successfully.
The birth of this technology has successfully
broken the traditional production process using twin screw extruder.The unique
mechanism of such technology from XINDA makes the materials bear continuous
shearing, orientation, cutting, folding, stretching and other processes in the
barrel,which makes polypropylene raw material and peroxide can get good mixing
effect,meanwhile,increasing the internal extrusion rate, heat and melt
retention time to achieve the purpose of mechanical shear degradation and
thermal degradation.For polymer melts,degradation needs to be uniform and
evenly,which can avoid uneven viscosity and distribution of molecular weight dispersed
because of inconformity degradation,at the same time,no over degradation
required.