2 ; ▁the ▁law ▁led ▁to ▁a ▁rec y cling ▁rate ▁for ▁be verage ▁containers ▁of ▁ 8 4 – 9 9 ▁percent ▁depending ▁on ▁type , ▁and ▁a ▁glass ▁bott le ▁can ▁be ▁re filled ▁over ▁ 2 0 ▁times ▁on ▁average . ▁ ▁W art ime ▁▁ ▁New ▁chemical ▁indust ries ▁created ▁in ▁the ▁late ▁ 1 9 th ▁century ▁both ▁invent ed ▁new ▁materials ▁( e . g . ▁Bak el ite ▁[ 1 9 0 7 ]) ▁and ▁promised ▁to ▁transform ▁val uel ess ▁into ▁valuable ▁materials . ▁Pro verb ial ly , ▁you ▁could ▁not ▁make ▁a ▁sil k ▁pur se ▁of ▁a ▁sow ' s ▁ear — until ▁the ▁US ▁firm ▁Arthur ▁D . ▁Little ▁published ▁in ▁ 1 9 2 1 ▁" On ▁the ▁M aking ▁of ▁Sil k ▁P urs es ▁from ▁S ows ' ▁E ars ", ▁its ▁research ▁prov ing ▁that ▁when ▁" chem istry ▁puts ▁on ▁over alls ▁and ▁gets ▁down ▁to ▁business ▁... ▁new ▁values ▁appear . ▁New ▁and ▁better ▁paths ▁are ▁opened ▁to ▁reach ▁the ▁goals ▁desired ." ▁ ▁Rec y cling ▁( or ▁" sal v age ", ▁as ▁it ▁was ▁then ▁usually ▁known ) ▁was ▁a ▁major ▁issue ▁for ▁govern ments ▁throughout ▁World ▁War ▁II . ▁Fin an cial ▁constraints ▁and ▁significant ▁material ▁short ages ▁due ▁to ▁war ▁efforts ▁made ▁it ▁necessary ▁for ▁countries ▁to ▁reuse ▁goods ▁and ▁rec ycle ▁materials . ▁These ▁resource ▁short ages ▁caused ▁by ▁the ▁world ▁wars , ▁and ▁other ▁such ▁world - ch