Automatic Film Inspection, Tension Correction and Rewinding

The Roll to Roll Unwinding & Rewinding Machine, also known as a Doctoring Machine, is designed to inspect, correct, and reprocess film rolls by unwinding and rewinding them with precise control. It is widely used in flexible packaging, plastic film production, printing, and converting industries, ensuring flawless roll quality.

The machine performs automatic web unwinding and rewinding, ensuring smooth film handling and stable operation throughout the process.

If the incoming roll has tension irregularities, the system adjusts and corrects the tension during rewinding, producing a perfectly wound roll.

For rolls with poor edge profile or misalignment, the machine corrects the edge position, ensuring a clean and uniform roll structure.

The operator can easily stop and restart the machine at any point without causing film damage or tension loss.

Located after the unwinder section, this unit allows the operator to:

• Lock the film pneumatically
• Cut and remove defective film sections
• Rejoin the film quickly and safely
  This feature is ideal for removing defects such as wrinkles, print errors, holes, or contamination.

The machine can be configured with:

• Pneumatic tension control, or
• Load-cell-based closed-loop tension control
  depending on the customer’s production requirements.

The machine width is custom-designed according to the film roll size and production needs.

• AC motor drive supports rolls up to 300 mm diameter
• For larger diameters and advanced precision, a servo motor drive can be integrated based on customer specifications
  This ensures perfect rewinding quality even at high speeds.

• Corrects tension and edge errors in pre-wound rolls
• Allows removal of defective film sections
• Enhances roll quality for downstream processes such as printing, slitting, or bag making
• Improves production efficiency and reduces waste
• Customizable design for any film type or roll size
• Safe and simple operation with minimal maintenance

• Flexible packaging manufacturers
• Plastic film extrusion lines
• Printing and laminating lines
• Slitting and converting operations
• Quality control and inspection departments

Automatic Film Inspection, Tension Correction and Rewinding

The Roll to Roll Unwinding & Rewinding Machine, also known as a Doctoring Machine, is designed to inspect, correct, and reprocess film rolls by unwinding and rewinding them with precise control. It is widely used in flexible packaging, plastic film production, printing, and converting industries, ensuring flawless roll quality.

The machine performs automatic web unwinding and rewinding, ensuring smooth film handling and stable operation throughout the process.

If the incoming roll has tension irregularities, the system adjusts and corrects the tension during rewinding, producing a perfectly wound roll.

For rolls with poor edge profile or misalignment, the machine corrects the edge position, ensuring a clean and uniform roll structure.

The operator can easily stop and restart the machine at any point without causing film damage or tension loss.

Located after the unwinder section, this unit allows the operator to:

• Lock the film pneumatically
• Cut and remove defective film sections
• Rejoin the film quickly and safely
  This feature is ideal for removing defects such as wrinkles, print errors, holes, or contamination.

The machine can be configured with:

• Pneumatic tension control, or
• Load-cell-based closed-loop tension control
  depending on the customer’s production requirements.

The machine width is custom-designed according to the film roll size and production needs.

• AC motor drive supports rolls up to 300 mm diameter
• For larger diameters and advanced precision, a servo motor drive can be integrated based on customer specifications
  This ensures perfect rewinding quality even at high speeds.

• Corrects tension and edge errors in pre-wound rolls
• Allows removal of defective film sections
• Enhances roll quality for downstream processes such as printing, slitting, or bag making
• Improves production efficiency and reduces waste
• Customizable design for any film type or roll size
• Safe and simple operation with minimal maintenance

• Flexible packaging manufacturers
• Plastic film extrusion lines
• Printing and laminating lines
• Slitting and converting operations
• Quality control and inspection departments