Preperse PA mankhwala ndi kukonzekera pigment wa organic inki kwa polyamide ndi poly-amide 6. Preperse PA inki ali mu granular mtundu.Zilibe fumbi, zopanda madzi komanso zoyenera kudyetsa zokha.
Kuchuluka kwa kubalalitsidwa kwa inki mu chonyamulira cha polima kumapangitsa kuti zinthu ziziyenda bwino, makamaka pakugwiritsa ntchito jekeseni, ma extrusion ndi ulusi.
Zochepa zomwe zimagwiritsidwa ntchito ponyamula polima zomwe zimagwiritsidwa ntchito zimakhala ndi zotsatira zabwino pamtundu wa rheological wa polima kusungunula komanso paukadaulo wazinthu zomaliza, monga kulimba kwamphamvu komanso kutalika kwa ulusi ndi ulusi.Kuthamanga kwapadera kwa ma pigment osankhidwa amalola kugwiritsa ntchito konsekonse ngakhale muzinthu zomwe zimafunikira kufulumira kwambiri.