Silicone Coated PET Release Liner (Antistatic & Clear)
The "Glass-Smooth" Solution for Precision Casting and Die-Cutting.
Charmetack’s **PET Release Film** is a high-grade polyester liner coated with a solvent-free or solvent-based silicone system. Unlike paper liners, PET offers **superior surface smoothness**, high tensile strength, and zero dust generation (Class 1000 Cleanroom compatible).
It is the critical carrier for manufacturing **Ultra-Thin Tapes**, **MLCC ceramics**, and **Optical Adhesives (OCA)**. We offer customized Antistatic (ESD) treatments to prevent dust attraction during processing.
Why Choose Our PET Liner?
- Optical Clarity: Our clear PET liner allows for easy inspection of the adhesive layer and is suitable for "No-Label Look" applications.
- Antistatic (ESD) Treatment: Available with single or double-sided antistatic coating (10^8 - 10^10 Ω) to prevent static shock and dust contamination.
- High Temperature Resistance: Withstands curing temperatures up to 180°C, making it safe for hot adhesive coating lines.
- Dimensional Stability: Minimal shrinkage (<1.5% @ 150°C), ensuring precise registration for multi-layer die-cutting.
Technical Specifications
Fully customizable for release force and thickness.
| Parameter | Details |
| Base Material | Biaxially Oriented Polyester (PET) |
| Thickness (µm) |
• 12µm - 23µm: For Label Overlamination • 36µm - 50µm: Standard Tape Liner • 75µm - 100µm: Heavy Duty Die-Cutting |
| Release Force |
• Super Light: 1-3 g/25mm (For MLCC/OCA) • Regular: 10-15 g/25mm • Heavy: 50-100 g/25mm (Differential Side B) |
| Surface Finish | Transparent (Clear), Matte, Blue Tint, or White (Opaque) |
| Special Coatings | Antistatic (ESD) / Anti-Scratch (Backside) |
| Residual Adhesion (SAS) | ≥ 95% (No silicone transfer) |
Typical Applications
- MLCC Manufacturing: As the casting carrier for ceramic slurry (requires ultra-smooth surface).
- Electronic Die-Cutting: Base liner for thermal pads, graphite sheets, and foam gaskets.
- Adhesive Tapes: Liner for double-sided PET tapes and transfer tapes.
- Medical Patches: Clean and safe liner for hydrogel wound dressings.
FAQ: PET Release Liner
Q: Do you have Antistatic PET liner?
Yes. Static electricity is a major issue with PET. We can apply an Antistatic Coating to reduce surface resistance to 10^9 Ω, preventing dust attraction and "static cling" during label dispensing.
Q: What is the difference between In-line and Off-line coating?
We offer both. In-line coating (during film extrusion) is cost-effective for thin films (12um). Off-line coating (precision coating head) allows for more accurate release force control (e.g., specific 3g or 50g requirements).
Precision Liners for High-Tech Industries
Get a Sample Kit (ESD / Non-ESD).
Tell us: Thickness (µm) + Release Force + Antistatic Needed?
