Ikhoyili yensimbi ye-ppgi ibizwa nangokuthi ikhoyili yensimbi ependwe kusengaphambili (ifushane ngokuthi “ikhoyili ye-ppgi”), isebenzisa uthayela njenge-substrate.Ngemva kokwelashwa kwangaphambili (ukususwa kwamakhemikhali nokwelashwa kokuguqulwa kwamakhemikhali), ingaphezulu lekhoyili yensimbi empunga ye-ppgi embozwe ngongqimba noma izendlalelo ezimbalwa zokunamathela, ngokubhaka nokwelapha, bese iba yi-PPGI. ungqimba lwezinki ludlala indima ekumbozeni nasekuvikeleni ikhoyili yensimbi enamabala ngombala, ukuvimbela ikhoyili yensimbi ukuthi ingagqwali, futhi ukuphila kwayo kwenkonzo kungaphezu kokuphindwe izikhathi ezingu-1.5 kunekhoyili yensimbi.
Ifilimu kapende esingayenza 10-30microns.Lapho ifilimu kapende iphakeme, iba yinde impilo yesevisi yombala.
Izinto zokudweba ziyi-PE, SMP, HDP, PVDF, ects.
Umbala we-pupolar wekhoyili yensimbi ye-ppgi: iwayini elibomvu (ral3005), obomvu kwelangabi (ral3000), Ruby obomvu(RAL3003), Obomvu Ophawu(RAL 3001 ),Obomvu be-Coral(RAL 3016 ),Obomvu bethrafikhi(RAL 3020)