Izikhwama zepulasitiki ezivumelana nemvelo zifushane ngezinhlobo ezahlukene zezikhwama zepulasitiki ezibolayo. Ngokuthuthuka kobuchwepheshe, kuvela izinto ezahlukahlukene ezingangena esikhundleni sepulasitiki ye-PE yendabuko, kufaka phakathi i-PLA, i-PHAs, i-PBA, i-PBS nezinye izinto ze-polymer. Ingashintsha izikhwama zepulasitiki ze-PE zendabuko. Izikhwama zepulasitiki ezivikela imvelo zisetshenziswe kabanzi: izikhwama zokuthenga ezitolo ezinkulu, izikhwama zokugcina izinto ezintsha, namafilimu emboza semboza semboza semboza semboza asetshenziswe kabanzi eShayina. Isifundazwe saseJilin samukele i-PLA (i-polylactic acid) esikhundleni sezikhwama zepulasitiki zendabuko, futhi sazuza imiphumela emihle. EDolobheni laseSanya, eSifundazweni saseHainan, izikhwama zepulasitiki ezibolayo ezinesitashi nazo sezisetshenziswe kakhulu ezimbonini ezifana nezitolo ezinkulu namahhotela.
Ngokuvamile, azikho izikhwama zepulasitiki ezihambisana ngokuphelele nemvelo. Izikhwama zepulasitiki ezithile kuphela ezingonakaliswa kalula ngemva kokwengeza izithako ezithile. Okusho ukuthi, ipulasitiki ebolayo. Engeza inani elithile lezithasiselo (ezifana nesitashi, isitashi esilungisiwe noma enye i-cellulose, ama-photosensitizers, ama-biodegradants, njll.) ohlelweni lokukhiqiza imikhiqizo yokupakisha yepulasitiki ukuze kuncishiswe ukuzinza kokupakishwa kwepulasitiki nokwenza kube lula ukuwohloka endaweni yemvelo . Kunamayunithi angu-19 akha noma akhiqize amapulasitiki angaboli e-Beijing. Ukuhlolwa kubonise ukuthi amapulasitiki amaningi awonakele aqala ukuba mncane, alahlekelwe isisindo, futhi alahlekelwe amandla ngemva kokuvezwa endaweni evamile izinyanga ezingu-3, futhi kancane kancane aphule abe yizicucu. Uma lezi zingcezu zigqitshwe kudoti noma emhlabathini, umphumela wokuwohloka awubonakali. Kunamaphutha amane ekusetshenzisweni kwepulasitiki eyonakalayo: enye iwukudla ukudla okwengeziwe; enye iwukuthi ukusetshenziswa kwemikhiqizo yepulasitiki eyonakalayo namanje akukwazi ukuqeda ngokuphelele “ukungcola okubukwayo”; okwesithathu ukuthi ngenxa yezizathu zobuchwepheshe, ukusetshenziswa kwemikhiqizo yepulasitiki eyonakalisayo akukwazi ukuxazulula ngokuphelele umthelela wemvelo "Izingozi ezingase zibe khona"; Okwesine, amapulasitiki awonakele kunzima ukuwasebenzisa kabusha ngoba aqukethe izithasiselo ezikhethekile.
Eqinisweni, into ehambisana kakhulu nemvelo ukusebenzisa izikhwama zepulasitiki noma izikhwama zepulasitiki ezingaguquki ukunciphisa inani lokusetshenziswa. Ngesikhathi esifanayo, ingasetshenziswa kabusha nguhulumeni ukunciphisa ukungcoliswa kwemvelo.
Isikhathi sokuthumela: Oct-08-2021