Njengenxalenye ephambili yezinto zokwakha iikhemikhali, imigca yokuvelisa imibhobho yeplastiki iyanconywa kakhulu kwiimarike ngenxa yokusebenza kwayo okuphezulu. Ngokusekwe kusetyenziso olucetywayo kunye nemveliso, imigca yokuvelisa imibhobho yeplastiki yahlulahlulwe ngokweendidi ezahlukeneyo, ikakhulu kubandakanywa imibhobho yokuhambisa amanzi ye-UPVC, imibhobho yamanzi ye-UPVC, imibhobho edibeneyo ye-aluminiyam, kunye nemibhobho yamanzi ye-polyethylene (PE).
Ukuthatha imigca yemveliso yombhobho we-PE njengomzekelo, banikezela ngezinga eliphezulu lokuzenzekelayo, ukukhululeka kokusebenza, kunye nokuthembeka okuqhubekayo kozinzo lwemveliso. Njengomgca wemveliso ophambili wemibhobho yokuhanjiswa kwegesi yesixeko kunye nemibhobho yamanzi angaphakathi, ukusebenza kwayo kuphuculwe kakhulu. Ukukwazi ukuziqhelanisa nokusingqongileyo okugqwesileyo kunye nokusebenza okuphezulu kwe-thermal fusion kwenza iimveliso zifaneleke ngakumbi iimeko zale mihla, ezintsonkothileyo, ezikhokelela kubomi benkonzo obude.
Umbhobho we-PE wemveliso osebenzayo wendlela ejikelezayo uphucula ngokubonakalayo umthamo wokuhambisa, kwaye ibhaskithi -uhlobo oludityanisiweyo lwentloko yokufa, ilungele ukusetyenzwa kwe-polyolefin, iqinisekisa uzinzo olululo lwe-extrusion ngelixa unciphisa uxinzelelo kunye nokunyusa umgangatho wombhobho ngenxa yobushushu obuphantsi bokunyibilika.
