Roots Vacuum Blower For Non-woven Fabric

Roots blower applied in non-woven fabric production line as vacuum pump for suction air.The model is RH10032S with cooling water.Roots blower connected with a motor by V-belt.

Nonwoven manufacturing process

Spun bond and melt blown are the most common methods to produce polymer-laid nonwoven fabrics. This is a process of melting and spinning.

Raw material PP comes into dosing equipment

Dosing equipment consists of a main material tank, two ingredient tanks, a mixing tank and a suction device. Main material and ingredients can be prepared as per a certain ratio. They transports from ground to the third floor by automatic equipments

Extruding raw material into melt

Extruder machine starts melting when PP chips and additives arrive. This machine has 8 heating zones. Standard sizes of the inside screw are φ135 mm, φ150 mm and φ170 mm. Rotary speed ranges from 20 to 80 r/min. The max extruding capacity is 450kg/h.

Extruding recycle nonwoven into melt

Recovery scrap is extruded into melt by recycle extruder machine. The structure is same as main extruder. It has 4 heating zones. The inside screw size is φ105 mm.

Filter impurities from the melt

There are impurities in the melt when it outflows from extruder machine. In order to make the melt clean, we use vertical filter to remove the impurities. In fact, there are two filters in this device. Each filter works independently. When one filter becomes dirty, just turn the steering wheel, then the other filter works instead of the previous one. It doesn’t need to power off the whole nonwoven machine.

Control the supply speed of melt flow

In order to work smoothly, spin pump is used to control the supply speed. It ranges from 200cc,250cc and 300cc with corresponding cloth width 1600mm,2400mm and 3200mm.

Spinning system

The melt in spin pump flows to the spinning box. Filaments are blown out through spinneret plate. There are thousands of holes on the spinneret. The sizes are from Φ0.2mm to Φ0.6mm.

Filaments stretching system

Spun bond and melt blown are totally different in stretching filament.

Spunbond stretching

The quench air ducts supply the conditioned air to cool the filaments from the spinneret. It’s located below the spinneret block. Filaments are stretched into long and thin fiber when they cool down. This equipment includes upper drawing channel, lower drawing channel, and diffusion channel.