High-Transparency PET Protective Film | Optical & Die-Cutting Carrier - STK
STK's High-Transparency PET Protective Film is a premium optical-grade shielding material engineered specifically for the global electronics, optoelectronics, and precision die-cutting industries. Utilizing an ultra-clear polyester (PET) film as the core substrate, this film is coated in a high-tech cleanroom environment with either a specialized Silicone Base or Acrylic Base pressure-sensitive adhesive.
Designed to provide structural stability and surface defense without compromising visual evaluation, our PET protective film offers an exceptional blend of dimensional rigidity, scratch resistance, and optical clarity. It serves as an essential barrier and processing vehicle for ultra-fragile display modules, glass panels, and touch sensors during high-speed manufacturing, rigorous automated die-cutting, and international transit.
Engineering Excellence: Optical Clarity & High-Temperature Protection
In high-end electronics manufacturing, standard polythene wraps are inadequate due to optical distortion and poor thermal stability. STK's PET film series is engineered to strict technical bench
Superior Optical Clarity (Light Transmission ≥ 92%):
With ultra-low haze and excellent light transmission, this film supports automated optical inspection (AOI) and visual quality control while the protective layer remains applied.
01
Dual Adhesive Engineering (Silicone vs. Acrylic Base)
○ Silicone Base:
Provides ultra-smooth wet-out performance, automatic bubble elimination, and excellent resistance to aging and high temperatures.
○ Acrylic Base:
Offers high initial tack, strong shear resistance, and cost-efficient performance for general smooth surface applications.
02
High Temperature & Weather Resistance:
Resists thermal degradation during processing and baking cycles, helping the film remain flat, stable, and bubble-free without shrinking or curling.
03
Guaranteed Clean Removal (Zero Residue):
Engineered with a balanced cohesive structure. Even after long-term application under varying pressures and temperatures, the film removes cleanly without adhesive ghosting or sticky residue transfer on sensitive optical surfaces.
04
Technical Specifications
| Property | Value (Metric) | Industry Standards / Testing |
|---|---|---|
| Base Material Carrier | Optical-Grade Polyester (PET) Film | High-stability extrusion |
| Adhesive Chemistry | Silicone Base / Acrylic Base | Controlled polymer matrices |
| Light Transmission | ≥ 92% | ASTM D-1003 Benchmark |
| Haze Value | ≤ 1.5% | Ultra-low visual distortion |
| Thickness Configurations | 0.03 mm / 0.05 mm / 0.075 mm / 0.1 mm | Custom calipers available |
| Peel Adhesion Range | 3 g - 100 g/25 mm | Multi-adhesion scaling |
| Temperature Range | -20°C to +150°C (Silicone) | High-temperature process ready |
B2B Factory Capacities: Cleanroom Manufacturing & Jumbo Supply
• Class 1000 Cleanroom Processing:
To protect sensitive optical surfaces, all coating, laminating, and slitting procedures for our high-transparency PET series are carried out in strictly controlled dust-free cleanroom environments. This helps prevent micro-particle contamination within the adhesive layer.
• Continuous Jumbo Roll Formats:
We supply master logs and large-capacity jumbo rolls optimized for continuous automated lamination lines, helping electronics manufacturers improve throughput and reduce roll-change downtime.
• Tailored Release Liners:
Supplied with highly stable PET release liners, our protective films run smoothly on automated pick-and-place systems without edge tearing or tracking issues.
Equipment
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