COEX DIE CLEANING

Coex extrusion die cleaning is an essential service to ensure optimal performance in multilayer extrusion and coextrusion systems. Polymer residues, deposits, and internal contaminations in the dies can seriously compromise the quality of the produced film, causing visible defects and problems with thickness and uniformity.

Importance of Extrusion Die Cleaning

Film Quality

If the channels are partially obstructed, the resulting film may have thickness defects, inclusions of degraded material, and color variations. With proper residue removal, however, flow continuity is ensured, and the transparency and mechanical strength of the finished product are improved.

Production Efficiency

A clean coex die allows the system to operate at higher extrusion speeds with a lower risk of film breakage. This results in higher hourly output and fewer rejects.

System Longevity

Residues and deposits can increase mechanical stress on components, causing premature wear or even breakages. Regular maintenance, with particular attention to professional coex die cleaning, preserves the integrity of parts and reduces the need for costly repair interventions.

Coex Die Cleaning Techniques

Manual Cleaning

Suitable for light residues, it involves disassembly and mechanical removal using specific tools.

Controlled Pyrolysis

Highly effective method for eliminating more difficult deposits through controlled heating that carbonizes polymer residues without damaging components.

Extruder Die Polishing

Final process that improves the finish of internal surfaces, reducing irregularities and optimizing polymer flow.

Services Related to Coex Die Overhaul

Specialized technicians also perform:

In-depth inspections with dedicated tools to detect micro-cracks and internal wear
Replacement of gaskets and worn parts to prevent leaks and contamination
Consultation on process parameters to minimize the formation of residues and deposits