Extrusion & Post
1 views
PA6 Co-Extruded Composite Film
Problem Phenomenon
The PA6/PE co-extruded film has uneven interlayer thickness during extrusion
Cause Analysis
The melt viscosity difference between PA6 and PE is large, the interface is unstable during co-extrusion, and improper flow distribution of each layer in the die causes uneven layer thickness; when troubleshooting on site, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
Solution
Select viscosity-matched co-extrusion grades; adjust the extrusion temperature of each layer to narrow the viscosity difference; precisely adjust the layer ratio with the die distributor; after adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
Key Takeaway
Co-extrusion layer thickness uniformity relies on viscosity matching and die distribution control; after confirming effectiveness, fix the parameters and practices into the work instructions to prevent recurrence; include this case in the defect archive as a reference for troubleshooting similar problems in the future
Was this helpful?
0 people found this helpful
Thank you for your feedback!