CW Single Layer RANGE

CW Single Layer RANGE

The majority of polymer films are manufactured by film blower extruders (blown film extrusion). Film blowing process: A single screw extruder is used to melt the polymer and force it into a tubular die. Air is blown into the centre of the extrude tube and causes it to expand in the radial direction. Adjustments to wall thickness and diameter are made in this continuous bubble or tube.

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Extension of the melt in both the radial and down-stream direction stops at the freeze line (frost line) due to crystallization of the melt. The nip rolls collect the film, as well as sealing the top of the bubble to maintain the air pressure inside. This is used extensively with polyethylene and polypropylene.

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Product Description

Model Film Thickness (mm) Film Width (kw) Extruder Motor (kw) Screw L/D Ratio Die Size Machine size LxBxH
 Capacity kg/h.
CW45HL 0.02-0.1 100-500 11 28:1 60/80 5000x2000x4100 45
CW50HL 0.02-0.1 300-600 15 28:1 60/100 5000x2200x4100 55
CW55HL 0.03-0.1 400-800 18.5 30:1 100/120 5500x2500x5200 65
CW65HL 0.03-0.1 600-1200 22 30:1 120/150 5800x2800x6500 70
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