Omugongo gw’enkola za otomatiki ezitabalika okwetoloola ensi yonna ye polypropylene PP strap, esinga okulabika bwe kituuka ku bulungibwansi bw’okupakinga mu kiseera kino. Ekintu kino ekisiba, ekisinga okukolebwa mu polypropylene resin, ekirungo ekiyitibwa thermoplastic polymer, .
Bw’oba ogula ebintu ebipakinga bizinensi, okukebera omutindo gw’omusipi gwa poliyesita ddaala ddene nnyo eririna akakwate obutereevu ku ngeri emigugu gye girina obukuumi n’ensimbi mmeka ezisaasaanyizibwa okuddukanya bizinensi. Omusipi gwa PET polyester ogw’omutindo ogwa waggulu gulina amaanyi g’okusika okuva ku kkiro 180 okutuuka ku 1360,
Amaanyi g’okusika kw’omusipi gwa PET mu bujjuvu gava ku kkiro 160 ne 635, okusinziira ku bipimo byakyo n’omutindo gw’okukola. Ekipimo kino kikiikirira amaanyi agasinga obunene omusipi gwa polyethylene terephthalate gwe gusobola okugumira nga tegunnamenya, ekigufuula ensonga enkulu eri mana y’okugula