▁rec y cling ▁and ▁material ▁rec y cling . ▁The ▁product ▁or ▁product ▁parts ▁are ▁re used ▁in ▁the ▁product ▁rec y cling ▁phase . ▁This ▁happens ▁in ▁one ▁of ▁two ▁ways : ▁the ▁product ▁is ▁used ▁retain ing ▁the ▁product ▁functionality ▁(" re use ") ▁or ▁the ▁product ▁continues ▁to ▁be ▁used ▁but ▁with ▁alter ed ▁functionality ▁(" fur ther ▁use "). ▁The ▁product ▁design ▁is ▁un mod ified , ▁or ▁only ▁slightly ▁modified , ▁in ▁both ▁scenarios . ▁ ▁Product ▁dis assembly ▁requires ▁material ▁rec y cling ▁where ▁product ▁materials ▁are ▁recovered ▁and ▁rec yc led . ▁Ide ally , ▁the ▁materials ▁are ▁processed ▁so ▁they ▁can ▁flow ▁back ▁into ▁the ▁production ▁process . ▁ ▁Rec y cling ▁codes ▁▁ ▁In ▁order ▁to ▁meet ▁rec y cl ers ' ▁needs ▁while ▁providing ▁manufact ur ers ▁a ▁consistent , ▁uniform ▁system , ▁a ▁coding ▁system ▁was ▁developed . ▁The ▁rec y cling ▁code ▁for ▁pl ast ics ▁was ▁introduced ▁in ▁ 1 9 8 8 ▁by ▁the ▁pl ast ics ▁industry ▁through ▁the ▁Society ▁of ▁the ▁Pl ast ics ▁Indust ry . ▁Because ▁municipal ▁rec y cling ▁programs ▁tradition ally ▁have ▁target ed ▁pack aging — prim arily ▁bott les ▁and ▁containers — the ▁res in ▁coding ▁system ▁offered ▁a ▁means ▁of ▁ident ifying ▁the ▁res in ▁content ▁of ▁bott les ▁and ▁containers ▁commonly ▁found ▁in ▁the ▁resident ial ▁waste ▁stream . ▁ ▁Pl astic ▁products ▁are ▁printed ▁with ▁numbers ▁ 1 – 7 ▁depending ▁on ▁the ▁type ▁of ▁res in .