PPGI o se acronym mo prepainted uʻamea uamea, e faʻaaogaina uʻamea e fai ma substrate.A maeʻa le faʻamaʻiina o le faʻamaʻi (faʻamaʻi vailaʻau ma togafitiga o vailaʻau), faʻapipiʻi le pito i luga o se laulau poʻo ni vaega faʻapipiʻi, e ala i le taoina ma le faʻamalolo, ona avea lea ma PPGI.
O le ata vali e mafai ona tatou faia 10-30microns.O le maualuga o le ata vali, o le umi o le ola tautua o le lanu.
O mea vali o PE, SMP, HDP, PVDF, ects.