Nyanzvi yePET preform jekiseni rekuumba muchina unosiyana zvakanyanya kubva kune yakajairika-chinangwa chakajairwa jekiseni rekuumba muchina., sezvo yakasarudzika mainjiniya kuti ienderane kune yakakosha yemuviri uye makemikari zvimiro zvePET resin, iyo michina yakajairwa haigone kugamuchira zvizere. PET zvinhu zvinoratidza kunyura kwakanyanya, kunzwa kupisa kwekushisa, low melt viscosity, uye zvakasimba zvinodiwa kuti plasticization kufanana uye kuumba nokukurumidza, …