Iwe uchashamisika kuti mabhegi emarara anoshandiswa zvakanyanya pasi rose uye haasi matsva.Mabhegi epurasitiki egirinhi aunoona mazuva ese akagadzirwa nepolyethylene.Vakagadzirwa muna 1950 naHarry Washrik nemumwe wake, Larry Hansen.Vagadziri vese vari vaviri vanobva kuCanada.
Chii chakaitika pamberi pebhegi remarara?
Mabhegi emarara asati agoverwa, vanhu vakawanda vaiviga marara panzvimbo.Vamwe vanopisa marara.Nenguva isipi, vakaziva kuti kupisa uye kuvigwa kwaitova kukuvadza zvakatipoteredza.Mabhegi emarara anobatsira vanhu kubata nemarara zviri nani.
Mabhegi emarara ekutanga
Pakutanga, masaga emarara aishandiswa pakutengeserana.Ivo vakamboshandiswa paWinnipeg hospital.Hansen akashandira union carbide, iyo yakatenga kugadzirwa kubva kwavari.Kambani yakagadzira mabhegi emarara ekutanga egirinhi muma1960 ndokuadaidza kuti mabhegi emarara emumba.
Iyo yakagadzirwa pakarepo yakakonzera manzwiro uye yakashandiswa mumabhizinesi akati wandei nemhuri.Pakupedzisira, yakava chigadzirwa chakakurumbira.
Drawstring bag
Muna 1984, nhoroondo yemabhegi emarara yakapinda mumusika, zvichiita kuti zvive nyore kuti vanhu vatakure masaga akazara.Iyo yekutanga yekudhirowa yakagadzirwa nepamusoro density plastiki.Aya masaga akasimba uye ane simba rekuvhara nzira.Asi mabhegi aya anodhura.Mabhegi ekudhirowa ane mukurumbira kumba uye ari nyore kutakura, saka ndakaatenga nekuwedzera mari.
Hushamwari hwezvakatipoteredza hwemabhegi emarara epolyethylene ane nharo.Muna 1971, Dr. James Gillett akagadzira purasitiki inonyura muzuva.Kuburikidza nekugadzirwa, tinogona kushandisa mabhegi epurasitiki uye tichiri kumira padivi pekuchengetedzwa kwezvakatipoteredza.Mabhegi eBiodegradable atovepo pamusika mazuva ano uye anoshandiswa nevanhu vazhinji.
Nguva yekutumira: Kubvumbi-16-2021