SKC Skyrol SW83G PET Film is a white, opaque polyester film with an ink adhesion pretreatment on one side, listed for labels, ink jet printing, and decoration
A white label base has to do three things at once: look bright, hide what is behind it, and hold ink. SKC Skyrol SW83G PET Film addresses all three on its product information sheet, and the numbers show how opacity changes with thickness.
What the Product Information Says
According to SKC, Skyrol SW83G is a white, opaque polyester film with an ink adhesion promotion pretreatment on one side. The listed uses are label, ink jet printing, and decoration. The text says it is available from 23 up to 125 micron, while the data table continues up to 250 micron, so please confirm which thicknesses are actually offered. SKC labels each grade by a gauge number, such as 92G for the 23 micron grade, with the nominal thickness shown alongside.
The Numbers That Matter
- Density: about 1.5 g/cm3 for all grades (ASTM D1505)
- Whiteness: about 110 percent (ASTM E313)
- Gloss: about 48 to 57 percent (ASTM D2457)
- Light transmission: falls from about 35 percent at the thinnest grade to about 2 percent at the thickest (ASTM D1003)
- Tensile strength: roughly 14 to 22 kg/mm2, which is about 140 to 215 MPa using SKC’s own conversion of 1 kg/mm2 = 9.8 N/mm2 (ASTM D882)
- Elongation at break: about 110 to 130 percent in MD and 70 to 90 percent in TD (ASTM D882)
- Heat shrinkage at 150°C for 30 minutes: about 1.5 percent in MD and 0.5 percent in TD
Reading Opacity by Thickness
The light transmission row is the one to watch. A thin grade lets through about a third of the light, which is semi-opaque, while the thickest grades let through only a few percent, which is close to fully opaque. If you need a label that hides a dark surface or adhesive, look at the grades in the low single-digit range. If you want a thin, flexible film and can accept some show-through, the thinner grades are the ones to test. Light transmission is a percentage of light passing through, a different measure from the optical density figures on some other white films, so do not compare them directly.
Whiteness stays at about 110 percent across the whole range, which means the white look does not change as thickness changes. Gloss is moderate, about half, so the surface has some shine without being mirror-like.
What “Ink Adhesion Pretreatment” Means
In general, a pretreatment is a coating or surface treatment that helps inks bond to polyester, which otherwise resists them (a general explanation, not from this datasheet). SKC says SW83G has this on one side, so the printing side matters. The sheet does not give a surface tension or an adhesion test result, so for ink jet printing, run your own ink and drying trial.
How It Differs from Neighboring Grades
- Toray Lumirror E20 White PET Film is also a pigment filled opaque white film, with a whiteness index of about 90 to 91 percent, and it lists cards, labels, and whiteboards. SW83G reports whiteness of about 110 percent and adds an ink adhesion pretreatment on one side. The two makers measure opacity differently (optical density for E20, light transmission for SW83G), so compare them by sample, not by number.
- Toray Lumirror E63 PET Film is a low density white film at 50 and 75 micron, treated for print receivers. SW83G is a more conventional solid white film, with density of about 1.5 g/cm3 against about 1.0 for E63.
What the Sheet Does Not Say
- SKC states that the results are a general guide to material properties and not a guarantee, and that some properties can change. Treat the numbers as typical.
- No surface tension, adhesion test, thickness tolerance, or food contact statement is given.
- The text up to 125 micron and the table up to 250 micron do not match, and some table values could not be matched to a specific grade. Please check the official sheet for exact values at your thickness.
Quick Answers
What is SW83G?
A white, opaque polyester film with an ink adhesion pretreatment on one side.
What uses does SKC list?
Label, ink jet printing, and decoration.
How white is it?
Whiteness of about 110 percent in the data table, across all thicknesses.
How opaque is it?
Light transmission drops from about 35 percent in the thinnest grade to about 2 percent in the thickest.
Can I buy SKC Skyrol SW83G PET Film from Jinlu Film?
Yes. Jinlu Film supplies SKC Skyrol SW83G 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.
Related Toray Lumirror Guides
- Toray Lumirror E20 White PET Film: a pigment filled opaque white film
- Toray Lumirror S10 PET Film: the general-purpose standard film
- Toray Lumirror T60 PET Film: a high transparent film for labels and graphics
- Toray Lumirror H10 PET Film: a hazy plain film for motor insulation
- Toray Lumirror X30 PET Film: a black film for cable tape
Sourcing White Label Film
Jinlu Film supplies SKC Skyrol SW83G PET Film, along with comparable white pretreated polyester film grades, including domestic alternatives, for label, ink jet, and decoration applications. Tell us your ink, thickness, and the opacity you need, and contact us for technical data, samples, or a factory quote.
Source: SKC’s publicly available Skyrol SW83G product information (typical values). Please refer to the latest official version. Skyrol, SKC, and related names are trademarks of their respective owners. Jinlu Film’s guide is an independent explanation for reference only.
