Uma kukhulunywa ngamafilimu epulasitiki, kunezinketho ezimbili ezidumile emakethe:I-HDPE(High-Density Polyethylene) kanyeI-LDPE(I-Low-Density Polyethylene).Zombili izinto ezisetshenziswayo zivame ukusetshenziswa ezimbonini zokupakisha, zezolimo, nezokwakha.Kodwa-ke, abathengi abaningi namabhizinisi bavame ukuzibuza ukuthi yikuphi okungcono phakathi kwe-HDPE ne-LDPE.Kulesi sihloko, sizohlola umehluko phakathi kwalezi zinto ezimbili futhi sixoxe ngezinzuzo nezinkinga zazo.
Okokuqala, ake sibheke i-LDPE.I-LDPE iyinto evumelana nezimo futhi engasindi evame ukusetshenziswa ekwenzeni amafilimu epulasitiki amancane nanwebekayo.I-LDPE ivame ukusetshenziselwa izinjongo zokupakisha, njengokukhiqiza izikhwama zepulasitiki, ama-shrink wraps, namafilimu ezolimo.I-LDPE yaziwa ngokumelana kwayo okuhle kakhulu nomswakama kanye namakhemikhali, okwenza ifaneleke izinhlelo zokusebenza ezidinga izinga eliphezulu lokuguquguquka nokuqina.Abakhiqizi bamafilimu be-LDPE bavame ukukhiqiza imikhiqizo eminingi ukuze bahlangabezane nezidingo ezahlukahlukene zamakhasimende abo.
Ngakolunye uhlangothi, i-HDPE iyimpahla eminyene futhi enamandla uma iqhathaniswa ne-LDPE.I-HDPE ijwayele ukusetshenziswa ezinhlelweni ezidinga amafilimu epulasitiki aqinile futhi aqinile, njengasekukhiqizweni kwezikhwama ezisindayo, oseyili, namalayini ezimboni.Ifilimu yepulasitiki ye-HDPEyaziwa ngamandla ayo aqinile okuqina kanye nokumelana namakhemikhali, okwenza kube ukukhetha okuhle kwezicelo zangaphandle nezisindayo.Abakhiqizi bamafilimu be-HDPEkhiqiza inhlobonhlobo yemikhiqizo ebhekelela izicelo zezimboni nezohwebo.
Manje, ake siqhathanise lezi zinto ezimbili ngokwezakhiwo nezici zazo.I-LDPE yaziwa ngokuguquguquka kwayo nokunwebeka, okuyenza ifanelekele izinhlelo zokusebenza ezidinga ukunwebeka nokuvumelana nemikhiqizo epakishwayo.Ngakolunye uhlangothi, i-HDPE yaziwa ngokuqina nokuqina kwayo, okuyenza ifanelekele izinhlelo zokusebenza ezidinga amandla nokuqina.Uma kuziwa ekuphikisweni kwamakhemikhali, kokubili i-LDPE ne-HDPE ibonisa ukumelana okuhle nomswakama namakhemikhali, okuwenza afanelekele ukupakishwa nokufaka izicelo.
Mayelana nomthelela wemvelo, kokubili i-LDPE ne-HDPE kuyizinto ezigaywa kabusha.Nokho, i-HDPE ivamise ukwamukelwa ukuthi igaywe kabusha emiphakathini eminingi uma iqhathaniswa ne-LDPE.Lokhu kungenxa yokuthi i-HDPE inenani eliphezulu emakethe yokugaywa kabusha ngenxa yezindawo zayo ezinamandla neziqinile.Ngenxa yalokho, i-HDPE ivame ukuthandwa ngabasekeli bezemvelo kanye nabathengi abaqaphela ukusimama.
Sengiphetha, ukukhetha phakathi kwe-HDPE ne-LDPE ekugcineni kuncike ezidingweni ezithile nasekusetshenzisweni komsebenzisi.I-LDPE ilungele izinhlelo zokusebenza ezidinga ukuguquguquka nokunwebeka, kuyilapho i-HDPE ifanele izinhlelo zokusebenza ezidinga ukuqina namandla.Zombili izinto zokwakha zinesethi yazo yezinzuzo kanye nokubi, futhi kubalulekile ukuthi amabhizinisi nabathengi baxhumane ne-LDPE kanyeAbakhiqizi befilimu yepulasitiki ye-HDPEukunquma impahla engcono kakhulu yezidingo zabo ezithile.Ekugcineni, zombili izinto zokwakha zidlala indima enkulu ekuhlangabezaneni nezidingo ezahlukahlukene zezimboni zokupakisha, ezolimo kanye nezokwakha.
Isikhathi sokuthumela: Feb-29-2024