Because the acceptable particle emission rates for the manufacture of plastic parts under cleanroom conditions are particularly low, Hosokawa has developed a system with the granulator installed inside a dust protection cabin, which is kept under constant negative pressure. This prevents particles escaping into the cleanroom environment, the company says.
The same negative pressure is used in the discharge of the regrind product at an FIBC filling station or alternative. The complete mill unit can be wheeled out of the cleanroom for cleaning and maintenance.
The selection of the granulation system is dependent on the size of the cleanroom and air suction tolerances within it. In larger cleanrooms, where space allows, the granulator can be arranged directly beside the production machine, however for smaller cleanrooms, a distant granulator can be used. By incorporating a pneumatic product transportation system from the point of production waste plastic can be transferred from the blow moulder or plastic injection machine to the granulator.
This system can be adapted to handle the waste plastic from several smaller cleanrooms with waste transferred pneumatically to a centrally placed granulator.
Contact T +44 1928 755100 F +44 1928 714325 {encode="info@hmluk.hosokawa.com" title="info@hmluk.hosokawa.com"} www.hosokawa.co.uk
