Iintambo zamandla ezidityanisiweyo ze-polyethylene ezifakwe emnqamlezweni ziphawulwa ngamandla omatshini aphezulu, ukuxhathisa okuqinileyo kuxinzelelo lwendalo, iipropathi zombane ezigqwesileyo, ukuxhathisa okunamandla kuhlaselo lwekhemikhali. Ukongeza, ukukhanya kunye neemveliso ezilula zisebenziseka ngokulula.