M’kupita kwa nthaŵi, madyerero a anthu asintha, zakudya zoziziritsa kukhosi pang’onopang’ono zayamba kutchuka pakati pa anthu, kufunikira kwa matumba oikira zakudya m’chisanu kukukulirakulirabe, ndipo zofunika za matumba oikiramo zakudya ozizira nazonso zapitirizabe kuwonjezeka.
Mikhalidwe yomwe zida zonyamula katundu ziyenera kukwaniritsa ndi izi:
OPP/LLDPE: Kapangidwe kazinthu kameneka kamatha kukwaniritsa umboni wa chinyezi, kuzizira, kutsika kwamphamvu kwamphamvu kwa kutentha kwapang'onopang'ono, etc., ndipo mtengo wake ndi wotsika mtengo;
NY / LLDPE: Kapangidwe kazinthu izi kumatha kupirira kuzizira, kukhudzidwa, komanso kubowola. Mtengo wake ndi wokwera kwambiri, koma ntchito yolongedza katunduyo ndiyabwinoko;
Zomangamanga monga PET/LLDPE, PET/NY/LLDPE ndi PET/VMPET/LLDPE zimagwiritsidwanso ntchito muzochita zachisanu, koma kugwiritsa ntchito kwake ndikotsika.