Polypropylene Sheet Winder

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Polypropylene Sheet Winder

PP (Polypropylene) Sheet Winder—used in plastic sheet extrusion lines to wind up continuous sheets of polypropylene after they've been cast and cooled. These machines are essential in the plastic manufacturing and packaging industry. It is also expand from 600(mm) to 2150(mm).
  • Description
How a PP Sheet Winder Works:

1. Sheet Feeding

  • After extrusion and cooling, the PP sheet is guided into the winder.
  • Rollers align the sheet to ensure proper winding.

    • 2. Tension Control

  • Tension is regulated to prevent wrinkles or stretch marks.
  • Typically managed by load cells, pneumatic brakes, or motor feedback systems.

    • 3. Winding

  • The sheet is wound onto a core (usually a paper or plastic tube).
  • The winder uses either:
    • Surface contact winding
    • Center winding (driven by the core shaft)

    • 4. Traverse (Side-to-Side Motion)

  • A traversing arm or guide shifts the sheet side-to-side to layer it evenly on the roll.

    • 5. Roll Change

  • When one roll is full, the machine either stops or automatically switches to a new roll (in turret or dual-station winders).