PET strap (polyester strap) inowana simba rayo kubva pauremu hwema molecular ezvakagadzirwa, izvo zvinoyerwa nemukati viscosity (IV). Iyo yakajairika IV yemhando yepamusoro PET tambo ndeye 0.60 kusvika 0.95 dl/g.
Kusarudza iyo chaiyo PP tambo (polypropylene tambo) upamhi hwakakosha pakuchengetedza mutoro, kuenderana kwemidziyo, uye mutengo wakanaka. PP tambo inowanikwa mune yakajairwa hupamhi kubva pa5mm kusvika 19mm. Tambo dzakatetepa (5-9mm) dzinoenderana nemakatoni akareruka uye e-commerce, nepo tambo dzakakura (12-19mm) dzinobata zvinorema pallets uye mitoro yemaindasitiri.