Toray Lumirror S105 PET Film is the one-side corona treated version of S10, offered in 23, 38, 50, and 75 micron for labels, adhesive tape, and FPC
S10 is the workhorse standard polyester film, and several grades in this range are variations on it. Toray Lumirror S105 PET Film is the one that adds a corona treatment on one side, so that adhesives and inks bond better.
Where S105 Sits in the S10 Family
- S10: the standard film, untreated, ten thicknesses from 12 to 350 um.
- S105: S10 with one side corona treated, 23 to 75 um, listed for label, adhesive tape, and applications needing good bonding with solvent or water based solutions, like FPC.
- S85S: a standard film pretreated on one side for adhesion, 50 and 75 um, listed for graphics.
- S56: the low shrinkage version, 75 to 125 um, for transformers and flexible circuits.
The practical difference between S105 and S85S is the kind of treatment. S105 is corona treated, a plasma-like surface treatment, while the S85S datasheet describes a pretreatment without naming the method (a general note: corona treatment can fade over time, so storage and shelf life are worth asking about).
What Corona Treatment Does
Corona treatment passes the film through an electrical discharge that raises its surface energy, so inks, adhesives, and coatings spread and bond better (a general explanation, not from this datasheet). The datasheet lists wetting tension as the measure of the treatment, but the figure is not clear in the text available here, so ask for it when you order. The datasheet describes S105 as also good for applications that need good bonding with solvent based or water based solutions such as adhesives and inks, like FPC.
The Numbers the Datasheet Gives
- Thickness: 23, 38, 50, and 75 um
- Tensile strength: about 205 to 225 MPa (ASTM D882)
- Elongation at break: about 160 to 175 percent (ASTM D882)
- Heat shrinkage at 150°C for 30 minutes: about 1.0 percent in MD and about 0.2 percent in TD (ASTM D1204)
- Breakdown voltage: listed, with one figure of about 7.5 kV visible, which matches the thin 23 um grade of S10 (ASTM D149)
- Properties: good electrical and mechanical properties, slight roughness for good handling
Strength and heat behavior track the S10 datasheet, which is the point: S105 keeps S10’s mechanical personality and adds a treated surface. Note that MPa is force per unit area, so a thicker film can still carry more total load.
Where It Is Used
The datasheet lists label, adhesive tape, and similar uses, and also applications such as FPC that need good bonding with solvent or water based solutions. The datasheet does not describe the exact processes, so test samples first.
What the Datasheet Does Not Say
- The values are typical data under specific test conditions and are not limiting specifications, as the datasheet itself notes.
- The wetting tension values are not clear in the text available. No haze, light transmittance, friction, or thickness tolerance is listed.
- It does not say which side is treated, or how long the treatment lasts.
- Some numbers are approximate. Please check the official datasheet for exact values at your thickness.
Quick Answers
What is Lumirror S105?
A one-side corona treated version of Lumirror S10.
What thicknesses does the datasheet cover?
23, 38, 50, and 75 um.
What applications does it list?
Label, adhesive tape, and applications such as FPC that need good bonding with solvent or water based solutions.
Can I buy Toray Lumirror S105 PET Film from Jinlu Film?
Yes. Jinlu Film supplies Toray Lumirror S105 PET Film. If you prefer a comparable-specification alternative, including domestic options, we can offer those as well, together with datasheets and samples so you can test them on your own line.
More PET Film Guides
- Toray Lumirror T56 PET Film: a low shrinkage transparent film
- Toray Lumirror S85S PET Film: a one-side pretreated standard film for graphics
- Toray Lumirror T70A PET Film: a high transparent film at 16 and 25 um
- Toray Lumirror P51 PET Film: a pretreated 12 micron film for printing
- Toray Lumirror F65 PET Film: a 12 micron base for hot stamping foil
Sourcing Corona Treated Film
Jinlu Film supplies Toray Lumirror S105 PET Film, along with comparable one-side corona treated polyester film grades, including domestic alternatives, for labels, tapes, and flexible circuits. Tell us your adhesive or ink, thickness, and treated side, and contact us for technical data, samples, or a factory quote.
Source: Toray’s publicly available Lumirror S105 technical data sheet (typical values). Please refer to the latest official version. Lumirror, Toray, and related names are trademarks of their respective owners. This article is an independent explanation for reference only.
