Decoding the 53 mN/m Wetting Tension, Corona Treatment, and Mechanical Stability for Labels and FPC
Product Overview
In the manufacturing of flexible printed circuits (FPC), premium labels, and industrial tapes, poor adhesion is a silent killer. If the ink or adhesive doesn’t bond perfectly to the substrate, the final product will peel, short-circuit, or fail in the field. This is the exact challenge that Lumirror S105 PET Film was engineered to conquer. As a one-side corona-treated version of the legendary S10, it delivers exceptional surface energy and mechanical stability. While global giants like Toray, DuPont PET Film, and SKC PET Film offer extensive material lines, the S105 grade stands out as the ultimate solution for demanding bonding applications.
The Core Specs: The Science of Surface Tension
What makes Lumirror S105 PET Film a critical material for converters? The data sheet reveals a highly specialized profile:
- High Wetting Tension (53 mN/m): The corona-treated side achieves a wetting tension of 53 mN/m. This dramatically increases the surface energy, ensuring that solvent-based adhesives, water-based inks, and coatings bond flawlessly without peeling or flaking.
- Excellent Processability: The film features a slight surface roughness that provides excellent slip and anti-blocking properties, ensuring it runs smoothly through high-speed printing and lamination machines.
- Robust Mechanical and Electrical Properties: It maintains a high tensile strength (up to 225 MPa) and excellent dielectric strength (breakdown voltage up to 15 kV at 75μm), making it highly reliable for electrical insulation and circuitry.
Key Applications Across Industries
The unique properties of Lumirror S105 PET Film make it indispensable for:
- Flexible Printed Circuits (FPC): Serving as a base film where perfect adhesion of copper and cover layers is mandatory.
- Premium Labels and Tapes: Providing a reliable base for solvent or water-based adhesives where peeling is not an option.
- High-Performance Coatings: Used in any application requiring strong ink bonding.
Sourcing a Reliable Alternative
While the Toray Lumirror S105 PET Film is a gold standard for adhesion, global buyers often seek a Lumirror S105 Alternative to manage costs and secure supply chains. A successful replacement requires a manufacturer that can guarantee the 53 mN/m wetting tension and maintain the specific surface roughness. If the corona treatment decays too quickly, your production line will face severe delamination issues.
Technical Characteristics
The following values represent the typical capabilities of our equivalent Corona-Treated PET Film range:
- Material: One-Side Corona Treated Biaxially Oriented Polyethylene Terephthalate
- Thickness Range: 23 μm, 38 μm, 50 μm, 75 μm
- Wetting Tension (Treated Side): 53 mN/m
- Tensile Strength: MD 205 to 225 MPa / TD 215 to 225 MPa
- Thermal Shrinkage at 150°C, 30min: MD 1.0% to 1.2% / TD 0.1% to 0.2%
- Breakdown Voltage: 7.5 kV to 15 kV
- Certifications: RoHS, REACH compliant
Why Choose Jinlu Film as Your Supplier
Jinlu Film is a leading manufacturer of high-performance functional PET films. We offer a direct factory substitute for the Lumirror S105 series, delivering the same high wetting tension and reliable mechanical strength required for FPC and label manufacturing. Whether you need standard rolls or custom slitting, we offer factory-direct pricing, reliable global shipping, and quality that rivals top-tier brands.
Contact us today for a factory quote, technical data, or a sample of Corona Treated PET Film.
