Ngati mwafika patsamba lino, mwina mumadziwa zomwe ma gumboots ali komanso kufunika kokhala ndi nsapato zapamwamba, zopanda madzi.Koma, mwasiya kuganiza, kodi nsapato zamvula zimapangidwa ndi chiyani? Eya, nsapato zambiri zopanda madzi zimapangidwa kuchokera ku mphira wachilengedwe kapena polyvinyl chloride - chinthu chopanga chomwe chimadziwika kuti PVC kapena vinyl.
Mphira wachilengedwe umachokera ku latex (sap) wamtengo wa rabara (Khalani ndi brasiliensis) yomwe imamera padziko lonse lapansi m'malo otentha monga Brazil, Thailand, ndi Indonesia.Komano, PVC ndi mtundu wa pulasitiki wopangidwa mu labu ndipo umachokera ku petroleum.Pali zabwino ndi zoyipa pogwira ntchito ndi zinthu zachilengedwe kapena zopangidwa chifukwa chilichonse chimapereka chosiyana ndi mtundu, kulimba, kulemera, komanso kukwanitsa.
Choyamba, tiyeni tikambirane za mphira wachilengedwe!Onse Merry People gumboots amapangidwa ndi mphira wachilengedwe kunja ndi yekha.Kusinthidwa kuchoka ku latex kukhala mphira (kenako kukhala ma gumboots anu), latex yachilengedwe imalowa muvulcanisation, njira yomwe idapangidwa ndikuvomerezedwa ndi Charles Goodyear waku Goodyear matayala.Vulcanisation imakwiyitsa mphira ndikupangitsa kuti ipangidwe mosavuta kukhala mawonekedwe ena.Kuchokera pamenepo, imaponyedwa mumitundu yopindika ya nsapato.Iyi ndi njira yotalikirapo yopangira kuposa njira zomwe zimagwiritsidwa ntchito popanga ma gumboots a PVC, koma zotsatira zake zimakhala zotsekemera zamtundu wapamwamba, zofewa, komanso zotsutsana ndi dzimbiri.
Kukhazikika, kukhazikika, komanso mtundu wa mphira wachilengedwe umabwera ndi kusinthanitsa kulemera ndi mtengo wake.Mwachilengedwe chake, mphira ndi chinthu cholemera kuposa PVC, kutanthauza kuti ma gumboots achilengedwe ndi olemera kuposa ma gumboots a PVC.Ntchito yamanja yomwe imakhudzidwa pakujambula latex kuchokera kumtengo wa rabara ndikuwupanga kukhala mphira ndi yokwera mtengo kuposa momwe amapangira PVC.Izi zikutanthauza kuti ma gumboots achilengedwe a rabara nthawi zambiri amakhala okwera mtengo kuposa ma gumboots a PVC.Komabe, pali tradeoff yomwe iyenera kupangidwa ngati mtengo wokwera wa raba wokhazikika wachilengedwe umalipidwa pautali wazinthuzo chifukwa nsapato zanu sizidzafunika kusinthidwa pafupipafupi.Timakhulupirira kwambiri kufunika kokhazikika ndikuwunika mtengo wa ma gumboots anu ndipo timayimilira izi ndi chitsimikizo cha chaka chimodzi pa nsapato zathu.
Tsopano tiyeni tikambirane za PVC!PVC ndi pulasitiki yopepuka yopangidwa, mwa zina, kuchokera ku petroleum.Kupanga PVC ndi njira yovuta yomwe imaphatikizapo chemistry yambiri, koma tsopano ndi njira yotchuka kwambiri komanso yotsika mtengo yomwe imagwiritsidwa ntchito m'mafakitale osiyanasiyana.Kuti asinthe PVC kukhala nsapato, timapepala tating'onoting'ono ta PVC timasungunuka kukhala madzi amadzimadzi, kenako ndikutsanuliridwa mozungulira nkhungu ya boot munjira yotchedwa jekeseni-kuumba.Kumangira jekeseni kumagwiritsidwa ntchito pama projekiti angapo, kupangitsa kuti ikhale yotsika mtengo yopangira kupanga ndipo imapangitsa nsapato za PVC kukhala zodziwika bwino zotsika mtengo zotsekera madzi komanso kwa omwe akufuna nsapato zopepuka.
Kukhazikika, kukhazikika, komanso mtundu wa mphira wachilengedwe umabwera ndi kusinthanitsa kulemera ndi mtengo wake.Mwachilengedwe chake, mphira ndi chinthu cholemera kuposa PVC, kutanthauza kuti ma gumboots achilengedwe ndi olemera kuposa ma gumboots a PVC.Ntchito yamanja yomwe imakhudzidwa pakujambula latex kuchokera kumtengo wa rabara ndikuwupanga kukhala mphira ndi yokwera mtengo kuposa momwe amapangira PVC.Izi zikutanthauza kuti ma gumboots achilengedwe a rabara nthawi zambiri amakhala okwera mtengo kuposa ma gumboots a PVC.Komabe, pali tradeoff yomwe iyenera kupangidwa ngati mtengo wokwera wa raba wokhazikika wachilengedwe umalipidwa pautali wazinthuzo chifukwa nsapato zanu sizidzafunika kusinthidwa pafupipafupi.Timakhulupirira kwambiri kufunika kokhazikika ndikuwunika mtengo wa ma gumboots anu ndipo timayimilira izi ndi chitsimikizo cha chaka chimodzi pa nsapato zathu.
Tsopano tiyeni tikambirane za PVC!PVC ndi pulasitiki yopepuka yopangidwa, mwa zina, kuchokera ku petroleum.Kupanga PVC ndi njira yovuta yomwe imaphatikizapo chemistry yambiri, koma tsopano ndi njira yotchuka kwambiri komanso yotsika mtengo yomwe imagwiritsidwa ntchito m'mafakitale osiyanasiyana.Kuti asinthe PVC kukhala nsapato, timapepala tating'onoting'ono ta PVC timasungunuka kukhala madzi amadzimadzi, kenako ndikutsanuliridwa mozungulira nkhungu ya boot munjira yotchedwa jekeseni-kuumba.Kumangira jekeseni kumagwiritsidwa ntchito pama projekiti angapo, kupangitsa kuti ikhale yotsika mtengo yopangira kupanga ndipo imapangitsa nsapato za PVC kukhala zodziwika bwino zotsika mtengo zotsekera madzi komanso kwa omwe akufuna nsapato zopepuka.
Nthawi yotumiza: Jun-21-2021
