
Why is Polypropylene (PP) So Tough to Recycle?
Polypropylene (PP) is without doubt one of the commonest plastic varieties on the planet. Within the U.S., PP plastic is marked with the quantity 5 plastic resin identification code on the underside of packaging. It’s the second most manufactured plastic after polyethylene, composing round 17% of annual world plastic manufacturing. As a food-safe plastic with…