Dual Spiral Systems Scientific Screw Design
			
			
Computing and analyzing the melting capacity of a single screw extruder, enables the melting section of the screw to be designed around its melting capacity. As a result, Dual Spiral Systems barrier screws assure that the geometry of the screw matches the melting behavior of the polymer (balanced feed screw design).
			
Our screw designs are tested using the latest screw design software to enable us to optimize their design to process a wide variety of resins. Our high performance barrier screw design also involves an experimental analysis.
		
		
		
		
		

			
Process Improvements
			The balanced melting section concept involves matching the geometry of the feed screw to the the melting behaviour of the polymer.
			It allows processors to take advantage of various process improvements.	The main advantages include lower pressures along the axis screw, higher throughput rates, lower melt temperatures, and more stable extruder operation. Combined with several  standard features we offer a high quality screw designed to outperform typical "high performance" feed screws.


		
		
		
		

		

		Warranty and Price


		
    	
		

		
 
		
Process Improvement
		
Effect
		
		
 
		
Lower pressures along screw axis
		
Longer life due to reduced screw wear, maximized pressure stability and less power consumption
		
		
 
		
Less compression of melt 
		
Optimized melt temperature and stability, maximized output and less polymer degradation
		
		
 
		
Efficient melting
		
Higher melt quality (no gels), at higher outputs
		
		
 
		
No flow restriction
		
Higher output and pressure stability
		
		
 
		
Improved mixing/melt homogenization
		
Wider blending ranges, uniform melt properties and maximized process flexibility
		
		
 
		
Streamlined design
		
Cleaner operation, faster changer over of materials
		
		

		

		

		
Dual Spiral Systems' barrels give enhanced abrasion and corrosion resistance under severe conditions in plastics processing equipment, especially when such fillers as glass, titanium dioxide, quartz, talc, mineral oxides, etc. are being used.


		
		
		

		

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