Toray Lumirror S85S PET Film is a standard polyester film with a one-side pretreatment for good adhesion, offered in 50 and 75 micron for graphics work
Not every polyester film needs a special story. Toray Lumirror S85S PET Film is described simply as a standard pretreated polyester film for good adhesion, treated on one side, and its datasheet is short and plain.
What the Datasheet Says
According to its datasheet, S85S is a standard pretreated polyester film for good adhesion, with one side treated. The only listed property is the pretreatment for good adhesion, and the listed application is graphics, among others. It comes in two thicknesses, 50 and 75 um.
In general, a one-side pretreatment means one face is prepared to accept inks, coatings, or adhesives, while the other face stays as ordinary polyester (a general explanation, not from this datasheet). The datasheet does not say which kind of treatment is used or how strong it is.
The Numbers the Datasheet Gives
- Thickness: 50 and 75 um
- Tensile strength in MD: about 216 to 218 MPa (ASTM D882)
- Tensile strength in TD: about 224 to 235 MPa (ASTM D882)
- Elongation at break: about 160 to 185 percent in both directions (ASTM D882)
- Heat shrinkage at 150°C for 30 minutes: about 0.1 to 0.2 percent (ASTM D1204), which is very low
These are typical figures for a standard polyester film at this thickness, which is the point: S85S is a standard film with a treated surface, not a film with a different mechanical personality. Low shrinkage and solid strength mean it handles printing, coating, and laminating steps without surprises. Note that MPa is force per unit area, so a thicker film can still carry more total load.
How It Differs from Neighboring Grades
- Toray Lumirror S10 PET Film is the untreated standard film, with similar strength at 50 and 75 um (about 218 MPa in MD for S10 versus about 216 to 218 for S85S). S85S adds the one-side adhesion pretreatment.
- Toray Lumirror P51 PET Film and P60 are printing films for food packaging at 12 to 16 um, with explicit ink adhesion claims. S85S is thicker and aimed at graphics, with no food contact statement on its datasheet.
- Toray Lumirror U94 PET Film is also pretreated, but it is a super clear film treated on both sides at 75 to 125 um, with clarity and anti-static claims.
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.
- No haze, light transmittance, surface tension, wetting tension, or friction values are listed, and no adhesion test data are given.
- The type of pretreatment, and which side is treated, are not described.
- Some numbers are approximate. Please check the official datasheet for exact values at your thickness.
Quick Answers
What is Lumirror S85S?
A standard polyester film pretreated on one side for good adhesion.
What thicknesses does the datasheet cover?
50 and 75 um.
What application does it list?
Graphics, and similar uses.
Can I buy Toray Lumirror S85S PET Film from Jinlu Film?
Yes. Jinlu Film supplies Toray Lumirror S85S 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 T70A PET Film: a high transparent film at 16 and 25 um for windows
- 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
- Toray Lumirror U94 PET Film: a super clear film treated on both sides
Sourcing Pretreated Graphics Film
Jinlu Film supplies Toray Lumirror S85S PET Film, along with comparable pretreated standard polyester film grades, including domestic alternatives, for graphics and coating applications. Tell us your ink or coating, thickness, and treated side, and contact us for technical data, samples, or a factory quote.
Source: Toray’s publicly available Lumirror S85S 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.
