Amapayipi we-PP akhiqizwa kusuka ku-polypropylene, i-thermoplastic polymer eyaziwa ngokuqina kwayo kanye nezakhiwo ezilula. Enye yezinzuzo ezibonakalayo zamapayipi we-PP ukumelana kwawo okuhle kakhulu nokugqwala kwamakhemikhali, ukwenza kufanele ukuhambisa uketshezi oluningi, kufaka phakathi ama-acid nezisekelo. Le khwalithi inzuzo ikakhulukazi ekusetshenzisweni kwezimboni lapho ukumelana kwamakhemikhali