Silicone Coated Polyester Film Rolls
Silicone coated polyester (PET) release film rolls — 25–125 μm thickness, single or double-side silicone coating. For pressure-sensitive labels, adhesive tapes, ceramic capacitors, composites, and window films. Custom widths 980–1040mm. Wholesale from China factory — 500kg MOQ, 15–20 day delivery.
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Product Introduction
Product Introduction
Silicone Coated Polyester Film Rolls are biaxially oriented PET (BOPET) films with a precision-applied silicone release coating on one or both sides. The PET substrate delivers high tensile strength, dimensional stability, and thermal resistance - while the silicone coating provides controlled, residue-free release for adhesive products during manufacturing, converting, and end-use application.
Available in thicknesses from 25 μm to 125 μm (0.025–0.125 mm) with standard widths of 980 mm, 1000 mm, 1020 mm, and 1040 mm - custom slit widths available. Release force is adjustable across a wide range (1–150 g) to match your adhesive system and application requirements.
Primary applications include pressure-sensitive label release liners, adhesive tape backings, ceramic capacitor manufacturing, composite material processing, window film liners, and electronics manufacturing. Single-side silicone coating is standard; double-side coating available for differential-release and interleaving applications.
Technical Specifications
| Parameter | Specification |
|---|---|
| Base Material | BOPET (Biaxially Oriented Polyester) |
| Total Thickness | 25–125 μm (0.025–0.125 mm) |
| Standard Thicknesses | 50 μm, 75 μm |
| Silicone Coating | Single-side or double-side |
| Release Force Range | 1–150 g (application-specific) |
| Standard Widths | 980, 1000, 1020, 1040 mm |
| Custom Widths | Available |
| Temperature Resistance | Up to 150°C continuous / 180°C short-term |
| Appearance | Transparent, smooth surface |
| Core Size | 3-inch (76 mm) or 6-inch (152 mm) |
Release Force Selection Guide
| Release Level | Force Range | Typical Application |
|---|---|---|
| Ultra-Light | 1–10 g | Medical dressings, optical films, delicate adhesive transfer |
| Light | 10–30 g | Standard pressure-sensitive labels, general-purpose release |
| Medium | 30–80 g | Die-cut labels, adhesive tapes, ceramic capacitor film |
| Heavy | 80–150 g | Aggressive adhesives, high-speed converting, industrial tapes |
Product Features
Precision Silicone Release Coating
Single or double-side silicone coating applied with tight coat-weight control. Release force is adjustable from ultra-light (1–10 g) for delicate adhesive films to heavy (100–150 g) for aggressive adhesives and high-speed automated processes. Clean, residue-free peel preserves adhesive performance.
High-Strength BOPET Substrate
The biaxially oriented polyester base film provides exceptional tensile strength, dimensional stability, and consistent caliper across the roll. Resists stretching, tearing, and deformation during coating, laminating, die-cutting, and matrix stripping - reducing web breaks and production downtime.
Thermal Stability for Process Compatibility
PET's thermal resistance (continuous use up to 150°C, short-term to 180°C) supports heat-assisted converting processes, hot-foil stamping, and thermal curing cycles without film shrinkage or silicone degradation.
Wide Release Force Range: 1–150 g
One product platform covers applications from ultra-light release (medical dressings, optical films) to heavy release (industrial tapes, aggressive adhesives). Specify your target release force when ordering - we match the silicone formulation to your requirement.
Standard and Custom Widths
Standard roll widths: 980 mm, 1000 mm, 1020 mm, 1040 mm. Custom slit widths available to your specification. Supplied in jumbo rolls or precision slit rolls on 3-inch or 6-inch cores.
Applications
Pressure-Sensitive Label Release Liner
The largest application: silicone-coated PET film serves as the release liner for pressure-sensitive labels across logistics, retail, food packaging, and industrial identification. The PET substrate's dimensional stability ensures accurate die-cutting registration and clean matrix stripping.
Adhesive Tape Production
Release liner for single-sided and double-sided adhesive tapes, transfer adhesives, and foam mounting tapes. Available in single-side coating (liner for one adhesive face) or double-side differential coating (different release forces on each side for two-liner tape constructions).
Ceramic Capacitor Manufacturing
Silicone-coated PET film is used as a carrier and release layer in the production of multilayer ceramic capacitors (MLCCs). The film's consistent caliper and clean release are critical for the precise layer stacking and sintering processes in capacitor fabrication.
Composite & Polymer Material Processing
Release film for cast polymer sheets, composite laminates, prepreg processing, and vacuum-bagging operations. The PET film withstands curing temperatures while providing clean release from epoxy, polyester, and vinyl ester resin systems.
Window Film & Glass Film Liner
Protective release liner for automotive and architectural window films, solar control films, and safety/security films. The PET liner protects the adhesive layer during manufacturing, slitting, and installation - peeling cleanly when the film is applied.
Electronics Manufacturing
Release liner and process carrier for flexible printed circuits (FPC), EMI shielding tapes, thermal interface materials, and electronic component assembly where clean, particle-free release is essential.
Art Conservation & Restoration
Used as a transparent release membrane on vacuum hot tables for painting conservation - including treatment of delicate paint surfaces, vapor treatment and lining, and consolidation of loose paint with thermoplastic adhesives. The uncoated side accepts masking tape for sealing to the vacuum table.
Packing:
Quality Assurance
Manufacturing Control In-line silicone coat-weight monitoring during coating. Batch testing for release force, residual adhesion, and visual inspection for coating defects before slitting and packing.
Product Selection Support To ensure correct product selection for your application, we recommend:
Testing samples on your equipment and with your adhesive system before bulk ordering
Specifying your target release force, coating side, and thickness during inquiry
Contacting our technical team for application-specific recommendations
Custom specifications (thickness, width, release force, silicone type, double-side differential coating) are available - discuss your requirements with our team.
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