Ukuhlolwa kwenqanaba lokuzalisa kuyindlela ebalulekileyo yokulawula umgangatho onokuthi uvavanye ukuphakama kolwelo ngaphakathi kwesitya ngexesha lokuzaliswa kwemisebenzi.Lo matshini ubonelela ngokuchongwa kwinqanaba lemveliso kunye nokugatywa kwezixhobo ezingaphantsi okanye ezigcwele i-PET, i-can okanye ibhotile yeglasi.