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Don't buy a mask without melt blown

Dont buy a mask without melt blown An ordinary flat face mask needs 1g melt blown cloth + 2G spunbond cloth A N95 mask, about 3-4g melt blown cloth + 4G spunbond Melt blown cloth is an important material for the production of medical surgical masks and N95 masks, which is called the heart of masks. Melt blown produced by melt pump nonwovens High speed hot air is used to draft the polymer melt fine flow extruded from the spinneret hole of die head, so as to form superfine fiber and agglomerate it

Selection of Pressure and Temperature of Melt Pump

The inlet pressure does not need to be too high, usually 3-5 MPa. High viscous fluids require higher inlet pressure. Sometimes in order to enhance the mixing effect of the melt in the extrusion screw, the screw head needs a higher pressure to increase the reflux, at this time the inlet pressure can be increased. The inlet pressure can be easily obtained by adjusting the flow matching between upstream devices (such as extruders) and melt pumps. The maximum pressure difference reflects the pressur

Use and Maintenance of Melt Gear Pump

At present, it is controversial whether the honing process of the outer gear of the melt gear pump can reduce the gear accuracy. However, as long as technological measures are taken, the gear accuracy can be maintained, the roughness of the tooth surface can be reduced, the burr can be removed reliably, and the knocking damage can be prevented, the gear rotation noise can be effectively reduced. For the whole transmission, in the assembly process, we must strictly operate the rules, conscientiou

Four Cautions for Daily Maintenance of Extrusion Granulation Melt Pump

1. During the operation of extrusion granulation melt pump , patrol inspection should be strengthened, and the vibration, noise, current, oil level and temperature of gear pump should be observed and recorded. When the output of extrusion granulation melt pump is increased every time, the output, rotational speed, exit pressure, inlet pressure and current value should be recorded, and the data before and after comparison should be carefully analyzed in order to find abnormalities as soon as poss

Performance of Polypropylene Melt Pump

Polypropylene melt pump is a polymer melt with high temperature and high viscosity. Therefore, the first requirement is that the pump has high temperature resistance, that is, at working temperature, all parts of the pump should have sufficient strength and stiffness, parts subject to alternating load should have high fatigue strength, wear parts should maintain high hardness and wear resistance. The expansion coefficients of each mating part should not be too different. Secondly, the pump is re



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Batte is a professional screen changer manufacturer, supplying screen changer, especially screen changer for extrusion mould