HDPE Sheets, lored, .015 to 3/32 Inch Thick, Beige, Black, Dark Blue, Medium Blue, Brown, Burgundy, Green, Grey, Natural, Orange, Red, White, Yellow HDPE sheet is often used to protect products from being scratched or dented. Thin. Several things differentiate polypropylene from HDPE.Density is the first factor. The density of polypropylene is between 0.895 and 0.92