Ukubumba ukuvuthela, okwakwaziwa njengokubumba umngxuma wokuvuthela, yindlela yokulungisa iplastiki ephuhlayo ngokukhawuleza.Ngexesha leMfazwe yeSibini yeHlabathi, inkqubo yokubumba isivuthelo yaqala ukusetyenziswa ukuvelisa iingqayi ze-polyethylene ezixineneyo.Ngasekupheleni kwee-1950s, ngokuzalwa kwepolyeth yoxinaniso oluphezulu...
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