Yuav kom ua tau raws li qhov yuav tsum tau ua ntawm cov hnab ntim retort, lawv cov qauv siv lub siab -lub zog polyester zaj duab xis rau txheej txheej, aluminium ntawv ci txheej rau nruab nrab txheej muab lub teeb thaiv thiab airtightness, thiab polypropylene zaj duab xis rau txheej sab hauv.
Tshwj xeeb, polyester (PET) txheej muab gloss thiab rigidity thiab tuaj yeem luam tawm rau sab hauv; cov nylon (PA) txheej muaj puncture kuj; aluminium foil (AL) txheej muab ib qho yooj yim heev tab sis muaj txiaj ntsig gas barrier; zaub mov- qib cam khwb cia polypropylene (CPP) yog siv los ua txheej txheej sealing, thiab polyethylene (PE) tuaj yeem hloov PP raws li txheej txheej sealing thiab nplaum. Peb- txheej txheej muaj xws li PET/AL/CPP thiab PET/PA/CPP, thaum plaub- txheej txheej muaj xws li PET/PA/AL/CPP. Tsis tas li ntawd, ob- txheej txheej txheej zaj duab xis kuj muaj, xws li BOPA/CPP thiab PET/CPP.
