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Centre Surface Slitter Rewinders

ALPHASHAFT centre surface winders with one or two shafts have short web paths for high productivity and control of narrow webs, typically used for paper, nonwovens, foams and pressure sensitive tapes.

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The short web path from the slitting knives to the rewinds is common to all styles for accurate roll alignment. The surface drive rolls control the web tension precisely up to the rewinds for controlled rewinding tension up to the rewinds, even when winding narrow slit rolls.

Examples shown:

  • Narrow width slitting on ALPHASHAFT with radial or linear tracking rewinds. Also available for nonwovens with fully cantilevered rewinds and mating unload trees.
  • Linear tracking simplex centre surface winder for nonwovens and textiles. This compact machine efficiently delivers light slit rolls of the highest quality.

Standard Features

  • Centre surface winding
  • Precise tension control with torque controlled rewinding shafts
  • PLC control with touch screen interface and comprehensive recipe and maintenance systems
  • Closed loop unwind tension control
  • Quality engineered and manufactured in UK

Optional

  • Gap winding
  • Spacer-less differential rewinding shafts
  • Floating contact roll for sensitive products (SP)
  • Automatic knife setting system
  • Trim removal
  • Powered roll stripping to trolley
  • Lift out shafts
  • Laser core positioning.
  • Linear tracking.
  • Turnkey supply, including packing, transport and start-up
  • Higher line speeds - up to 1000 m/min (3,000 ft/min)
  • Rewind unloading systems
  • Differential or lock core rewinds
  • Unwind tension control through AC drive system or precision air brake
  • Medical or pharmaceutical production
  • Simplex rewinding (Single shaft) for faster operation and reduced cost

Typical Specification

ALPHASHAFT
Web width1,000 to 2,000 mm40 to 80 inches
Rewind diameter1000 to 1500 mm240 to 60 inches
Minimum rewind width50 mm2 inches
Rewind core diameter76 mm3 inches
Unwind diameterTo 1,800 mm70 inches
Material thickness25 to 500 µm1 to 20 mils
Line speed (maximum)600 m/min2,000 ft/min
Operator interface10" colour touch screen

ALPHASHAFT COMPACT
Web width300 to 800 mm12 to 32 inches
Rewind diameter300 to 1000 mm12 to 40 inches
Minimum rewind width6 mm0.25 inches
Rewind core diameter76 mm3 inches
Unwind diameter1000 mm40 inches
Material thickness25 to 500 µm1 to 20 mils
Line speed (maximum)300 m/min1,000 ft/min
Operator interface6" colour touch screen

Typical Materials

PaperLaminatesBoard
Non-wovenCore boardLabel stock
 

Buying from Alpha Converting

We prides ourselves on our flexible approach to meeting the demands of our varied customers. We take the time to listen to your requirements and to understand your existing production techniques and methods to offer converting equipment that will best fulfill your needs.