The Challenge: High Shear Stress & Die Build-up
In high-speed LSZH Cable Extrusion, the accumulation of material at the die exit—commonly known as die drool—is a critical bottleneck. High shear stress often leads to premature plate-out, forcing manufacturers to halt production lines for costly cleaning cycles. Preventing die drool is essential for maintaining surface smoothness and optimizing extrusion line speed.
Mechanism Comparison: Innovation vs. Tradition
| Feature | Traditional Additives (PE Wax/Stearates) | SILIKE LYSI Silicone Masterbatch |
|---|---|---|
| Action Mechanism | Lubrication via surface coating | Internal molecular network migration |
| Die Drool Control | Ineffective at high shear | Excellent, prevents material plate-out |
| Surface Quality | Prone to fogging/blooming | Superior surface smoothness |
Optimized Product Portfolio for LSZH Extrusion
LYSI-401 (PE Base)
Ideal for LSZH Cable Extrusion to improve extrusion line speed by over 20%.
Dosage: 0.5% - 2.0%
SC-930 (Specialized)
Engineered to eliminate die drool in highly filled FR compounds.
Dosage: 0.5% - 5.0%
Performance Metrics
Increase in Extrusion Speed
Reduction in Die Cleaning Stops
About SILIKE Masterbatch
Silicone Masterbatch (Siloxane Masterbatch) LYSI series is a pelletized formulation with 20~65% ultra high molecular weight siloxane polymer dispersed in various resin carrier. It is widely used as an efficient processing additive in its compatible resin system to improve the processing properties and modify surface quality.
Compare to conventional lower molecular weight Silicone / Siloxane additives, like Silicone oil, silicone fluids or other type processing aids, SILIKE Silicone Masterbatch LYSI series are expected to give improved benefits, eg., Less screw slippage, improved mold release, reduce die drool, a lower coefficient of friction, fewer paint and printing problems, and a broader range of performance capabilities.
