Sleeve Labeler Manufacturer | Celtheq | Québec SLEEVE LABELING FALLS INTO TWO CATEGORIES Stretch sleeves • Made of Easy to Recycle Polyethylene • No Heat Necessary • Shapes up to 55% in diameter variance • Ideal for High Volume Products Shrink sleeves • Made of PVC, PET, PETG, OPS and PLA • Uses heat to be take the container shape • Shapes up to 85% in diameter variance