BOPP Silicone Release Liner | Differential Release (Light/Tight)

BOPP Silicone Release Liner (Single & Double Sided)

Charmetack BOPP Silicone Release Liner is the preferred carrier for precision adhesive applications. Utilizing advanced Solvent-Free Silicone Coating technology, our films deliver superior cleanliness and stable release values (SAS >95%), ensuring no silicone migration interferes with your adhesive's tack.

Differential Release Capability — For double-sided applications, we can customize specific "Light vs. Tight" release ratios (e.g., 5g/30g) to ensure perfect transfer performance.
Optical Clarity & Color Coding — Available in "No-Rainbow" Ultra-Clear for invisible labels, plus Blue/Red/White options for visual process identification.
Precision Coating — Uniform silicone coverage guarantees smooth unwinding at high speeds without "stick-slip" or confused peeling.

Get a Custom Quote: Specify your required Release Force (g/25mm) and Film Thickness. We offer free samples for differential testing.

product description

The Ultimate Solution for Precision Die-Cutting and Tape Casting.

Charmetack’s **BOPP Release Film** features a smooth, biaxially oriented polypropylene carrier coated with a premium **Solvent-Free Silicone** system.

Unlike rough paper liners, our BOPP film offers **superior smoothness** and tensile strength, making it the preferred choice for manufacturing **Ultra-Clear Labels** and **Adhesive Transfer Tapes**. We offer both standard single-sided and **Double-Sided Differential Release** (1:3 ratio) configurations.

Why Choose Our BOPP Release Liner?

Solvent-Free Technology: Eco-friendly coating with SAS (Subsequent Adhesion Strength) > 95%, ensuring no silicone migration to your adhesive.
Differential Release (For Double Sided): We can coat "Easy Release" on one side and "Tight Release" on the other, essential for transfer tape converting.
No "Rainbow" Effect: Optimized coating process ensures a uniform layer without optical distortion, perfect for clear-on-clear labels.
High Tensile Strength: BOPP resists tearing during high-speed rotary die-cutting and waste stripping.

Technical Specifications

Fully customizable to fit your coating line.

Parameter	Details
Base Material	BOPP Film (Biaxially Oriented Polypropylene)
Coating Type	Solvent-Free Silicone (Thermal Cure)
Structure Options	• Single Sided: Standard Release • Double Sided: Equal or Differential Release (e.g., 10g / 50g)
Thickness Range	• Ultra-Thin: 12µm - 19µm (For Overlam) • Standard: 25µm - 50µm (For Labels) • Heavy Duty: 75µm - 100µm (For Die-Cut Base)
Release Force	• Super Light: 3-5 g/25mm • Regular: 10-15 g/25mm • Heavy (Tight): >50 g/25mm
Color Options	Clear, Matte, Blue, Red, White (High Opacity)

Typical Applications

Adhesive Transfer Tapes: As the differential liner for unsupported glue films.
Die-Cutting Carrier: A sturdy base for precision kiss-cutting of electronic parts.
Clear-on-Clear Labels: Invisible labels for beverage bottles (No-Label Look).
Self-Adhesive Waterproof Membranes: Construction industry liners (using thicker 100µm film).

FAQ: BOPP Release Film

Q: Can you produce Double Sided liner with different release forces?

Yes. This is our specialty. We can coat "Light Release" (e.g., 5g) on one side and "Heavy Release" (e.g., 30g) on the other. This creates a Differential Liner, allowing the tape to stick to the heavier side when unrolled.

Q: Does your silicone migrate?

No. We use a high-end Solvent-Free Curing System with SAS values >95%. This ensures the silicone is fully anchored to the BOPP film and won't contaminate your adhesive.