A Deep Dive into the Versatility, Dielectric Strength, and Handling Properties of Standard Industrial Polyester Film
Product Overview
In the world of specialty materials, some films are designed for one specific job, while others are engineered to do it all. Lumirror S10 PET Film is the ultimate all-rounder. As a standard biaxially oriented polyester film, it is the invisible workhorse behind countless industrial applications. From the ultra-thin 12μm gauges used in flexible circuits to the heavy-duty 342μm (nominal 350μm) sheets used in demanding electrical insulation, S10 offers a perfectly balanced combination of mechanical strength, optical transparency, and electrical reliability.
The Engineering Behind the All-Rounder
What makes Lumirror S10 the go-to choice for engineers across different industries? The data sheet reveals three key strengths:
- Incredible Thickness Range: Spanning from 12μm to 342μm, it is one of the most versatile product lines available, allowing engineers to scale the same material properties across different voltage classes and mechanical requirements.
- Reliable Dielectric Strength: As the thickness increases, the breakdown voltage scales from 4.1 kV up to an impressive 31.2 kV. This makes it exceptionally reliable for flyback transformers (FBT), choke coils, and wire insulation.
- Slight Surface Roughness: Pure PET can be too smooth and cause blocking on high-speed machinery. S10 features a specialized slight roughness, providing excellent slip and handling properties for automated winding, die-cutting, and lamination.
Key Applications Across Industries
Because of its versatile properties, Lumirror S10 is heavily utilized in:
- Electrical Insulation: Flyback transformers (FBT), choke coils, and cable tapes.
- Electronics: Flexible printed circuits (FPC) and membrane switches.
- Industrial Converting: Die-cut electrical insulation, mold release films, and adhesive tapes.
Sourcing a Reliable Alternative
While Lumirror S10 is a legendary standard in the industry, supply chain managers often look for a Lumirror S10 Alternative to optimize costs. To successfully replace S10, a manufacturer must be able to replicate the full thickness range and guarantee the specific surface roughness needed for flawless handling on high-speed machines.
Technical Characteristics
The following values represent the typical capabilities of our equivalent Standard PET Film range:
- Material: Biaxially Oriented Polyethylene Terephthalate
- Thickness Range: 12 μm up to 350 μm (nominal)
- Tensile Strength: MD 164 to 271 MPa / TD 164 to 238 MPa
- Breakdown Voltage: 4.1 kV up to 31.2 kV
- Thermal Shrinkage at 150°C, 30min: MD 0.9% to 1.5% / TD 0.1% to 0.7%
- UL746B: RTI Electrical 105°C, Mechanical 105°C
Why Choose Jinlu Film as Your Supplier
Jinlu Film is a leading manufacturer of Standard Polyester Film. We offer a direct factory substitute for the Lumirror S10 series, providing the same slight roughness for handling and high dielectric strength for electrical safety. Whether you need 12μm for FPC or heavy gauges for transformers, we offer factory-direct pricing, custom slitting, and reliable global shipping.
Contact us today for a factory quote, technical data, or a sample of Standard PET Film.
