Polypropylene labels are typically used for harsh industrial and commercial environments. Their lifespan is much longer than paper labels and requires less energy and fewer raw materials than most other film substrates. Polypropylene labels are weatherproof, temperature resistant, tearproof and more! Polypropylene labels are oriented in 2 ways: one direction is called a mono-axial film (OPP) or in both directions called a biaxially-oriented film (BOPP). Buckeye uses BOPP. Some industries who use polypropylene labels are plant nurseries, lumberyards, shipping, meat/poultry, etc.