Ikhoyili ye-ppgi ehlanganiswe ngombala ibizwa nangokuthi ikhoyili yensimbi ependwe kusengaphambili (okufushane ngokuthi “ikhoyili ye-ppgi”), isebenzisa uthayela njenge-substrate.Ngemuva kokwelashwa kwangaphambili (ukususwa kwamakhemikhali nokwelashwa kokuguqulwa kwamakhemikhali), indawo engaphezulu embozwe ngongqimba noma izingqimba ezimbalwa zokumboza, ngokubhaka nokwelapha, bese iba yi-PPGI. idlala indima ekumbozeni nasekuvikeleni ikhoyili yensimbi enombala, ukuvimbela ikhoyili yensimbi ukuthi ingagqwali, futhi impilo yayo yesevisi yinde ngokuphindwe 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 ependwe kusengaphambili: iwayini elibomvu (ral3005), obomvu kwelangabi (ral3000), Ruby obomvu(RAL3003), obomvu Ophawu(RAL 3001 ),Obomvu be-Coral(RAL 3016 ),Obomvu bethrafikhi(RAL 3020)