Intelligence Center
Application Insight / PVC · 7 min read
PVC processing aid: fusion, surface and window
Slow fusion, rough surface and narrow window: how processing aids fit the diagnosis with stearate and wax.
Symptom on the extruder
Profiles with incomplete fusion, uneven gloss or a narrow thermal window rarely fix by “raising temperature” alone. Processing aid, lubrication and stabilization must be read together.
Reading order
Start from part type (profile, pipe, injection). Confirm delayed fusion, plate-out and unbalanced internal/external lubrication before swapping the aid blindly.
- ▸Map symptom: fusion, surface or torque.
- ▸Review stearate + wax package.
- ▸Trial aid at a conservative dosage.
- ▸Validate color and impact after the change.
Next step
Extrusion, injection and PVC profile landings point to the SKU. Request a processing-aid sample and align the lubrication package with Plectus engineering.