Makina opangira jakisoni a PET preform amasiyana kwenikweni ndi makina opangira jekeseni wamba., popeza idapangidwa mwapadera kuti igwirizane ndi mawonekedwe apadera akuthupi ndi mankhwala a PET resin, zomwe makina wamba sangathe kukwanitsa. Zinthu za PET zimakhala ndi mayamwidwe apamwamba kwambiri, tcheru kuwonongeka kwa kutentha, otsika kusungunuka mamasukidwe akayendedwe, ndi zofunika okhwima kwa plasticization mafananidwe ndi liwiro akamaumba, …