Izikhwama ezilukiwe, ezaziwa nangokuthi izikhwama zesikhumba sezinyoka. Luhlobo lwepulasitiki olusetshenziselwa ukupakisha, futhi izinto zalo ezingavuthiwe ngokuvamile ziyizinto ezahlukahlukene zamakhemikhali ezifana ne-polyethylene ne-polypropylene.
Izikhwama ezilukiwe zepulasitiki zenziwa ngemichilo emincane yefilimu yepulasitiki enobubanzi obuthile, noma ngokuluka imichilo epulasitiki ethambile ngamandla aphezulu kanye nokugcwala okushisayo kusetshenziswa indlela eshisayo elula. Izikhwama ezilukiwe zepulasitiki zinamandla amakhulu amakhulu kunezikhwama zefilimu zepulasitiki, aziwonakali kalula, futhi zibe nokuphikiswa okuhle komthelela. Ngasikhathi sinye, ingaphezulu lesikhwama solukiwe linamaphethini alukiwe, athuthukisa kakhulu ukusebenza kwalo okushelelayo futhi asiza ukufakwa phakathi Isitoreji.
Izinzuzo:
1) isisindo esikhanyayo
2) amandla aphezulu we-fracture
3) Ukumelana nokugqwala okuhle kwamakhemikhali
4) Ukumelana kahle
5) Ukufakelwa okuhle kukagesi
6) Ukumelana Kwemvelo
Izicelo:
1) Izikhwama zokupakisha zemikhiqizo yezimboni nezolimo
2) Izikhwama zokupakisha zokudla
3) Imboni yezokuvakasha nezokuhamba
4) Izinto zokwakha zobunjiniyela
5) Izinto zokulawula izikhukhula
Izimemezelo:
1) Gwema ukulayisha izinto ezidlula umthamo wokuphatha ukugwema ukulimala kwezikhwama ezilukiwe noma ukungakwazi ukuziphatha.
2) Gwema ukuhudula ngqo emhlabathini, njengoba ukungqubuzana phakathi kwesikhwama solukiwe kanye nomhlabathi akugcini nje ngokuletha inhlabathi emhlabathini ngaphakathi kwesikhwama solukiwe, kodwa futhi kungadala isilika somonakalo esikhwameni solukiwe.
3) Gwema ukukhanya kwelanga okuqondile kanye nokuqina kwamanzi emvula ukusheshisa izinga lokuguga lomkhiqizo.
4) Gwema ukuxhumana namakhemikhali afana ne-acid, utshwala, uphethiloli, njll. Ukuze alondoloze ukuthungwa kwawo okuguquguqukayo nombala wangempela.