UMary Allen
Iresin yincindi eshinyeneyo evela kwindalo. Izityalo ezahlukeneyo zifuna ukuyisebenzisa ukunyanga ukwenzakala kumphezulu. Nangona kunjalo, umntu uye wafunda ukuvelisa iirasi ezahlukeneyo. Uyisebenzisa ukwenza iipeyinti nezinto zokuncamathelisa. Omnye ke uthetha "nge-resin eyenziweyo".
I-resin ikwabizwa ngokuba yi-amber. I-Amber ayikho enye into ngaphandle kweresin eye yaqina kwizigidi zeminyaka. Ngamanye amaxesha isilwanyana esincinane sivaleleke ngaphakathi, ngokuqhelekileyo ibhungane okanye esinye isinambuzane.
Yintoni ekufuneka uyazi malunga nentlaka yendalo?
I-resin yendalo ifumaneka ikakhulu kwi-conifers. Kubomi bemihla ngemihla, lonke ulwelo lubizwa ngokuba yi "resin". Kuyafana nakwezi ngxelo.
Umthi ufuna ukusebenzisa intlaka ukuvala amanxeba kwixolo. Kuyafana noko sikwenzayo xa sikrwela ulusu lwethu. Igazi ke ngoko liyajiya kumphezulu kwaye lenze umaleko obhityileyo, oko kukuthi ukhwekhwe. Ukwenzakala emthini kubangelwa, umzekelo, ngamanqina eebhere okanye amaxhama, amaxhama abomvu, kunye nezinye izilwanyana ezidlakaza ixolo. Lo mthi ukwasebenzisa intlaka ukulungisa umonakalo owenziwe ngooqongqothwane.
Abantu baqaphele kwangoko ukuba iinkuni ezinentlaka zitshisa ngakumbi kwaye ixesha elide. Ipayina yayiyeyona idumileyo. Maxa wambi abantu babede baxobule amaxolo omthi izihlandlo eziliqela. Oku akuzange kuqokelele intlaka eninzi nje phezu komphezulu womthi kodwa nangaphakathi. Lo mthi wawusarha waza wacandwa waba ziziqwenga ezicolekileyo. Le yindlela eyadalwa ngayo iKienspan, eyatshisa ixesha elide. Yafakwa kwisixhobo sokukhanyisa. Iiplanga zokucheba iipayina nazo zinokufunyanwa kwizikhondo zemithi.
Ukuza kuthi ga kwisithuba esimalunga nekhulu leminyaka eyadlulayo, kwakukho umsebenzi okhethekileyo, iHarzer. Wawasika amaxolo ompayini ukuze intlaka ingene kwi-emele encinane ezantsi. Waqalisa encotsheni yomthi wathi chu ehla. Yile ndlela kanye icaoutchouc ekhutshwa ngayo namhlanje ukwenza irabha ngayo. Nangona kunjalo, i-resin inokufumaneka "ngokubilisa" iinkuni kwii-ovens ezikhethekileyo.
I-resin yayisetyenziswa ngeendlela ezininzi ezahlukeneyo kwixesha elidlulileyo. Kwangexesha leStone Age, abantu bancamathelisa amacangci amatye kwimibambo yamazembe. Xa ixutywa namafutha ezilwanyana, kamva yayisetyenziselwa ukuthambisa iiasi zeenqwelo ukuze amavili ajike lula. Inothi nayo inokutsalwa kwintlaka. Ibhadi lincangathi kakhulu. Amashwa asasazwa kumasebe, umzekelo. Xa intaka yayihleli phezu kwayo, yayinamathela ize kamva ityiwe ngabantu. Emva koko waba "ngelishwa".
Kamva, intlaka yasetyenziswa nakwezamayeza. Xa kwakusakhiwa iinqanawa, izikhewu phakathi kwamaplanga zavalwa ngeresin kunye nehemp. Abazobi basebenzisa i-resin, phakathi kwezinye izinto, ukubopha umgubo wepeyinti.
Iingcali zicinga ntoni nge-resin?
Noko ke, kwingcali, inxalenye kuphela yentlaka yomthi enentlaka yokwenene. Kwimichiza, i-resin evela kwimithi iqukethe amacandelo ahlukeneyo. Xa iindawo ze-resin zixutywe neoli, kuthiwa yi-balm. Ixutywe namanzi ibizwa ngokuba yi "gum resin" emva kokumisa.
Kukho iintlobo ezininzi ezahlukeneyo ze-synthetic resin. Zenziwa kwimizi-mveliso yeekhemikhali. Iimathiriyeli ekrwada zoku zivela kwipetroleum.