A clear film (actually a fibre) commonly used in food wrapping because it’s resistant to most acids and alkalis, and it’s see-through.
OPP and BOPP are common specifications for Polypropylene or PP. BOPP is crystal clear, ideal for being the only wrapping on a product, such as bakery items.
It’s also very strong, ideal for melting to seal and wrapping any shape and size of product.
Typical specifications might show: PP 400mm 750m 25mu.
PP = Polypropylene
400mm = width of the film
750m = length of the roll
25mu = thickness of the film