I tata nei, ka patai tetahi kaihoko ki te utu o te taura polypropylene, ko te kaihoko he kaihanga o te kawe kupenga kupenga ika, ko te tikanga he taura polyethylene te nuinga o te waa, engari he maamaa te taura polyethylene, he ngawari ki te wewete i muri i te whiri, ko te painga o te taura waea papatahi ko te He taratara te monofilament o te taura, ehara i te mea ngawari ki te paheke.Engari he taumaha ake te polypropylene i te polyethylene.Ko te tikanga, ko te tauira ngota o te propylene ko CH3CH2CH3, ko te tauira ngota o te ethylene ko CH3CH3.He kotahi atu te ngota waro i te polypropylene i te polyethylene, no reira he taumaha ake te papatipu o te taura polypropylene i te polyethylene.

Ko te hanganga o te polyethylene e whai ake nei:

—(CH2-CH2-CH2-CH2)n—-

Ko te hanganga o te polypropylene e whai ake nei:

—(CH2-CH(CH3)-CH2-CH(CH3)-CH2-CH(CH3))n—-

Ka kitea mai i te hanganga ko te polypropylene he mekameka manga nui ake i te polyethylene.I muri i te hanga i te taura, na te mahi a te mekameka manga, he kaha ake te kaha o te taura o te polypropylene i te polyethylene, a ehara i te mea ngawari ki te paheke.Ko te kiato o te polypropylene he 0.91 me te kiato o te polyethylene he 0.93, no reira me taumaha ake te polyethylene.

Ko te taura polyethylene he ngawari ake, he maeneene me te ngawari ake i te polypropylene.