Toray Lumirror X44 PET Film is a direct matted polyester film from 25 to 50 micron with specular gloss of about 45 percent, nearly double the gloss of its X42 sibling
Put the three datasheets side by side at 26 um and the gloss readings run about 19, 29, and 45 percent for X42, X43, and X44. Toray Lumirror X44 PET Film is the one at the bright end of the matte range.
How It Differs from Neighboring Grades
According to its datasheet, Lumirror X44 is a pigment filled, direct matted polyester film. It shows a particular surface compared with sand matted types, and it has the highest specular gloss among Lumirror X42, X43, and X44. Here is how the three compare, using the thicknesses they share:
- At 26 um, specular gloss is about 19 percent for X42, about 29 percent for X43, and about 45 percent for X44 (ASTM D2457).
- At 50 um, the readings are about 21, 30, and 45 percent.
- X44 stays at about 44 to 45 percent across all four of its thicknesses, so its look is very consistent from grade to grade.
- Thickness range: Toray Lumirror X42 PET Film covers 12 to 50 um in five grades, Toray Lumirror X43 PET Film covers 12 to 150 um in ten grades, and X44 covers 25 to 50 um in four grades.
- Listed applications: X42 for hot stamping foil, X43 for hot stamping foil and releasing, and X44 for hot stamping foil and labels.
The datasheets do not state a gloss measurement angle, so use these figures to rank the three films against each other, not against gloss numbers from other sources.
Toray Lumirror X44 PET Film in Five Numbers
- Thickness: 25, 26, 38, and 50 um (the 25 um grade measures about 23.5 um)
- Specular gloss: about 44 to 45 percent (ASTM D2457)
- Tensile strength: about 205 to 235 MPa in MD and 225 to 245 MPa in TD (ASTM D882)
- Elongation at break: about 110 to 140 percent in MD and 105 to 130 percent in TD (ASTM D882)
- Heat shrinkage at 150°C for 30 minutes: about 1.2 to 1.5 percent in MD and 0.2 to 0.4 percent in TD (ASTM D1204)
What a Higher Gloss Matte Film Is Good For
Specular gloss measures how much light reflects off a surface like a mirror, so a lower number means a duller surface. A reading near 45 percent means X44 is a matte film that still keeps some brightness, a softer finish than a lower-gloss grade like X42 but not a mirror finish (a general interpretation of the numbers). Direct matted generally means the matte effect comes from fine particles built into the film itself, rather than from roughening the surface afterward (a general explanation, not from this datasheet).
From these numbers, X44 is the grade to test first if you want a matte look that stays lively, for example under a label or a foil layer where an overly flat finish would look dull. If you need the deepest matte, the X42 datasheet is the one to read instead.
Where the Datasheet Says It Is Used
The datasheet lists hot stamping foil and label. Label is the one application that X44 has and its siblings do not list, so it is the clearest reason to look at X44 specifically. The datasheet does not describe the exact role of the film in either product, so confirm suitability with your own line and test samples.
Reading the Four Thicknesses
25 um. The strongest of the thin grades at about 235 MPa in MD and 245 MPa in TD, with elongation of about 110 and 105 percent and MD shrinkage of about 1.4 percent.
26 um. Slightly lower strength at about 205 MPa in MD and 225 MPa in TD, with the highest MD shrinkage of the four at about 1.5 percent. It sits right next to the 25 um grade, so ask your supplier which of the two they hold.
38 um. Strength of about 215 MPa in MD and 225 MPa in TD, elongation up to about 130 and 125 percent, and the lowest MD shrinkage at about 1.2 percent.
50 um. The thickest grade has the highest elongation (about 140 percent in MD and 130 percent in TD), MD tensile strength of about 225 MPa, MD shrinkage of about 1.3 percent, and the highest TD shrinkage at about 0.4 percent. Note that MPa is force per unit area, so a thicker film can still carry more total load.
Taken together, the grades behave very much alike, which makes thickness choice mostly about your process rather than about large differences in properties.
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.
- Shrinkage is given only at 150°C. X42 and X43 also list 190°C data, but X44 does not.
- No haze, light transmittance, surface roughness values, tensile modulus, surface tension, or thickness tolerance are listed.
- The gloss measurement angle is not stated.
- The datasheet does not say how the film is used inside a foil or label product.
Questions Buyers Ask About Toray Lumirror X44 PET Film
Which is the glossiest of Lumirror X42, X43, and X44?
According to the datasheet, X44 has the highest specular gloss of the three, and the comparison readings show about 45 percent for X44 versus about 19 to 21 percent for X42.
Does the gloss of Lumirror X44 change with thickness?
Very little. The datasheet lists about 44 to 45 percent for all four grades.
What thicknesses does the Lumirror X44 datasheet cover?
25, 26, 38, and 50 um.
What applications does the datasheet list?
Hot stamping foil, label, and similar uses.
Can I buy Toray Lumirror X44 PET Film from Jinlu Film?
Yes. Jinlu Film supplies Toray Lumirror X44 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 X43 PET Film: a direct matted film from 12 to 150 um for hot stamping foil and releasing
- Toray Lumirror X10S PET Film: a low oligomer, heat-rated film for Class B motor insulation
- Toray Lumirror P60 PET Film: a one-side corona treated film for snack and retort pouch packaging
- Toray Lumirror P52 PET Film: a 12 um pretreated film for metallizing, compared with P525
- Toray Lumirror F552 PET Film: an ultra-thin base film for thermal transfer ribbon
Sourcing Matte Film for Foil and Labels
Jinlu Film supplies Toray Lumirror X44 PET Film, along with comparable matte polyester film grades, including domestic alternatives, for hot stamping foil and label applications. Tell us your process, thickness, and the gloss level you need, and contact us for technical data, samples, or a factory quote.
Source: Toray’s publicly available Lumirror X44 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.
