This equipment is suitable for the production of spunbond nonwovens using PP chips as main material.
I. Application
This equipment is suitable for the production of spunbond nonwovens with a variety of colors and different properties using PP chips as main material mixed with master batch, antioxigen, anti-pilling agent and flame retardant.
II. Design Basis 1.Project data
Raw material: Polypropylene chips (Melt index: 30-40g/10min, with variation not more than 1% for each batch; Melt point: 166°C; Ash content:
Annual output: 3000 tons (say 7,200hours based on GSM over 30)
Extruder size: φ170×30
Max. winding diameter: 1000mm
Process speed: 10-130m/min
Installed power: approx. 1100kW
1.Product specifications:
Web width: 3200mm
Single filament titer: 1.8-2.5 denier
Web weight: 10-150g/m2
1. Dosing and mixing system
1.1 Function
Chips are transported by a suction system from the ground to the dosing and mixing system on the third floor. Main material and auxiliary materials can be prepared as per a certain ratio. The whole system consists of the following:
Consisting of a main material tank, two auxiliary tanks, a mixing tank, a suction device, a metal detector, complete with an alarm unit for low and high chip levels, automatic control of feeding.
The main material is suctioned automatically with the ancillary material filled manually. Dosing screws are used for filling proportionally.
1.2 Technical data
Max. feeding capacity for main material: 700kg/hr
Volume of storage hopper: 0.6m3
Max. mixed components: 3