Foil & Sheet

Direct Extrusion of Technical Foils and Sheets

The production of technical foils and sheets increasingly requires high energy efficiency, formulation flexibility and consistent product quality, especially when processing complex, highly filled or recycled polymer.

Traditionally, these products are manufactured through a two-step process:

1. compounding and pelletizing

2. re-melting and extrusion into foils or sheets

This approach results in:

• higher energy consumption

• increased material handling

• longer processing chains

• additional thermal stress on the polymer

ICMA solution: single-step direct extrusion

ICMA develops direct extrusion lines based on co-rotating twin-screw technology, enabling the production of technical foils and sheets in a single continuous step.

By combining compounding and sheet or foil extrusion into one integrated process, ICMA solutions allow:

• significant energy savings

• elimination of intermediate pelletizing

• simplified plant layout

• reduced operational complexity

Reduced thermal history and improved product performance

Direct extrusion significantly reduces the thermal history of the material, as the polymer melt is processed and shaped without intermediate cooling and re-melting.

This results in:

• improved mechanical properties

• enhanced surface quality

• reduced material degradation

• increased long-term product stability

These benefits are particularly relevant for technical sheets and foils with demanding performance requirements.

Advanced melt quality through compounding know-how

ICMA twin-screw extruders apply advanced compounding techniques directly to the melt, ensuring:

• homogeneous dispersion of fillers and additives

• stable and controlled rheological behavior

• consistent melt structure across the sheet width

This approach enables the production of high-quality foils and sheets, even for complex and highly filled formulations.

Precision dosing and formulation repeatability

ICMA direct extrusion lines are typically fed by gravimetric dosing systems, providing:

• precise control of formulation recipes

• accurate filler and additive dosing

• excellent batch-to-batch repeatability

Precise dosing is essential to guarantee consistent mechanical and functional properties of technical sheets and foils.

Flexibility and scalability through modular twin-screw design

Thanks to the modular architecture of co-rotating twin-screw extruders, ICMA systems offer:

• flexible screw and barrel configurations

• rapid adaptation to different materials and formulations

• smooth scalability from development trials to full industrial production

This flexibility allows manufacturers to respond quickly to changing product requirements and market demands.

Processing of highly filled and recycled materials

ICMA direct extrusion technology is particularly suited for:

• highly filled sheet and foil formulations

• recycled plastics requiring purification and upgrading

The twin-screw extruder enables:

• efficient melt loading with mineral fillers

• integrated degassing and devolatilization

• effective removal of volatile contaminants and odors

This makes ICMA solutions ideal for sustainable foil and sheet production, combining performance with circular economy objectives.

Typical applications

• Technical sheets and foils

• Highly filled polymer sheets

• Recycled plastic sheets

• Building and construction materials

• Industrial and functional foils

Why ICMA

ICMA combines:

• single-step direct extrusion expertise

• advanced compounding technology

• high-torque twin-screw extruders

• precision gravimetric feeding

• recycling and purification capability

The result is a high-efficiency, flexible and industrial-grade solution for the direct extrusion of technical foils and sheets.

Processes and formulations for this industry can be developed and validated on ICMA Lab & Pilot extrusion systems before being transferred to full-scale production lines.

Typical industrial applications

• Lines for special sheets & foils according to customer's requirements
• Lines for wood plastic sheet using "Woodstock" technology
• Lines for Heavy layer
• Lines for transparent and or high thickness
• Lines for special foil / BOPP plant and similar
• Lines for high tech membranes
• Lines for ABS sheets

Ask ICMA!