Xyuas cov ntawv kom zoo: Ntim yuav tsum tau hais meej meej "rau cov khoom noj" lossis "rau cov ntim khoom noj," cov khoom siv (piv txwv li, PE / PP), cov ntaub ntawv tsim khoom, tus qauv siv tau (GB 4806.7), thiab SC ntau lawm daim ntawv tso cai tus lej; Kev siv cov khoom lag luam uas tsis muaj npe, muaj cov cim tsis raug cai, lossis tsis muaj kev txheeb xyuas qhov tsim nyog (qhov "peb- tsis" cov khoom) raug txwv nruj me ntsis.
Zam kom tsis txhob muaj kev pheej hmoo siab ntau: Tsis txhob siv cov hnab yas mos uas tsis muaj npe, cov hnab xim dub lossis cov hnab rov ua dua tshiab (uas yuav muaj cov co toxins), ultra- cov hnab nyias nyias (thickness<0.025mm), or products with pungent odors.
Sib txawv cov ntaub ntawv: Siv PE hnab rau cov khoom noj tshiab ntawm chav tsev kub; xaiv PP (Tsis yog. 5) hnab rau kev tiv thaiv tshav kub; PVC (Tsis yog. 3) raug txwv nruj rau kev sib cuag zaub mov-tshwj xeeb yog tuav cov khoom noj rog lossis rau cua sov.
