Cooling tunnel

Overview
Multi-Touch roll stack for high-throughput sheet cooling. Designed to extend cooling capacity where conventional roll stacks reach their limits. Two larger-diameter main rolls provide low deflection while subsequent smaller rolls enable multiple short changes of cooling sides to produce flat, stress‑free sheet.

Your Advantages:

• High, constant nip pressure between rolls and sheet prevents air entrapment even at elevated line speeds
• Improved transparency and surface gloss through optimal heat transfer and rapid cooling (particularly for PP)

Our Offer:

• Modular concept: roll stack length and number of rolls adjustable to match required throughput
• Proven field-tested design with options for special configurations

Working principle / Design features:

• Uniform cooling of the sheet's top and bottom via multiple nips and alternating cooling sides
• Thin-walled rolls for enhanced cooling performance
• Two large-diameter main rolls for reduced deflection and multiple smaller rolls to create short cooling-side changes

Applications:
Engineered for high-throughput extrusion sheet production, especially where traditional roll stacks cannot provide sufficient cooling capacity.

Variants / Options:

• Standard configuration and special versions (e.g. XXL)
• Inclined or horizontal layouts available
• Customizable roll diameters, roll spacings and number of rolls to meet process requirements

Characteristics / Technical specifications:

• Product type: Multi-Touch roll stack for high-throughput sheet cooling
• Main rolls: two larger-diameter rolls to minimize deflection
• Subsequent rolls: smaller diameters to allow multiple short changes of cooling sides
• Thin-walled roll design to improve cooling efficiency
• Multiple nips for optimal heat transfer and flat, stress-free sheet
• Modular design — length and roll count adjustable to throughput
• Available in special versions (e.g. XXL, inclined or horizontal layouts)
• Designed to increase throughput, reduce energy per unit and improve surface properties (higher transparency and gloss, especially for PP)