Toray Lumirror U60 PET Film is a co-extruded transparent film at 12 and 23 micron, and its surface and optical properties are controlled by that process
Window film asks a lot of its base: clear enough to be invisible, tough enough to survive dyeing and metallizing, and stable enough to stay flat. Toray Lumirror U60 PET Film is described as a transparent film whose surface and optical properties are strictly controlled by co-extrusion technology.
What Co-Extrusion Does Here
In general, co-extrusion means forming more than one polymer layer at the same time, so the surface layers can be tuned separately from the core (a general explanation, not from this datasheet). For U60, that is how the datasheet explains the controlled surface and optics, and the listed application is window film.
The Numbers the Datasheet Gives
- Thickness: 12 um (grade 47G) and 23 um (grade 92G)
- Total luminous transmission: about 88.8 to 89.4 percent (ASTM D1003)
- Gardner haze: low, which the datasheet highlights as what the solar control industry requires (ASTM D1003)
- Tensile strength: about 292 to 294 MPa in one direction (ASTM D882)
- Coefficient of friction: about 1.25 and 0.48 in the figures given (ASTM D1894)
- Heat shrinkage at 190°C for 5 minutes: low, which the datasheet says suits dyeing processes
Luminous transmission near 89 percent means roughly nine tenths of visible light passes through, which is the kind of clarity a window film needs. Haze measures how much of that light is scattered, and a lower number means a clearer, less cloudy film. Note that MPa is force per unit area, so at 12 um the total load the film can carry is small, and tension control matters.
The Process Story the Datasheet Tells
Unusually, this datasheet describes how the film performs in customer trials. It says qualification is going extremely well across all process areas, and that dyeing, metallizing by vacuum deposition, metallizing by sputtering, and lamination are being evaluated at many customers. It names scratches, wrinkles, haze, heat shrinkage, and handling as the main issues found during qualification, and says processing conditions were adjusted to improve all of them. The datasheet also lists less abrasion and low heat shrinkage at 190°C for 5 minutes among its properties.
The useful reading for a buyer is this: the film is aimed at converters who dye, metallize, or laminate. The datasheet gives no numbers for scratch resistance or wrinkling, so run your own trial.
How It Differs from Neighboring Grades
- Toray Lumirror T60 PET Film is also a transparent film, from 25 to 250 um, with light transmittance of roughly 84 to 87 percent and haze of about 0.6 to 3.0 percent, listed for graphic arts, labels, and membrane switches. U60 is thinner (12 and 23 um) and aimed at window film.
- Toray Lumirror F71 PET Film also offers a 12 um transparent grade, listed for metallic yarn, with haze of about 1.5 percent.
- Toray Lumirror C21 PET Film is the 6 um capacitor film, so it shares the thin-film handling issues but not the optical focus.
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.
- Haze, heat shrinkage, and yield at 5 percent are mentioned or listed, but the text available here did not show every number clearly. Please check the official datasheet for exact values at your thickness.
- No scratch, wrinkle, or abrasion data is quantified, and no thickness tolerance or surface tension is listed.
Quick Answers
What is Lumirror U60?
A transparent co-extruded polyester film whose surface and optical properties are strictly controlled.
What thicknesses does the datasheet cover?
12 um (47G) and 23 um (92G).
What application does it list?
Window film.
Can I buy Toray Lumirror U60 PET Film from Jinlu Film?
Yes. Jinlu Film supplies Toray Lumirror U60 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 C21 PET Film: a 6 micron film for capacitors
- Toray Lumirror S56 PET Film: a low shrinkage film for FBT and FPC
- Toray Lumirror E60 PET Film: a soft white film for D2T2 printers
- Toray Lumirror S28 PET Film: a high-grade S10 with a uniform surface
Sourcing Window Film Base
Jinlu Film supplies Toray Lumirror U60 PET Film, along with comparable transparent polyester film grades, including domestic alternatives, for window film and solar control applications. Tell us your process, thickness, and optical needs, and contact us for technical data, samples, or a factory quote.
Source: Toray’s publicly available Lumirror U60 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.
