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Have you ever wondered about those little numbers with the arrows around them, on the bottom of plastic containers? They're called resin identification codes, and they indicate the type of plastic that an item is made from. These numbers are intended to help consumers know whether and how to recycle various plastic products and packages.
In 1988 the plastics industry, through the Society of the Plastics Industry, Inc., introduced its voluntary resin identification coding system. A growing number of communities were implementing recycling programs in an effort to decrease the volume of waste subject to rising tipping fees at landfills. In some cases, test programs were driven by state-level recycling mandates.
The code system was developed to meet recyclers' needs while providing manufacturers a consistent, uniform system that could apply nationwide. Because municipal recycling programs traditionally have targeted packaging – primarily bottles and containers – the resin coding system offered a means of identifying the resin content of bottles and containers commonly found in the residential waste stream.
For additional information, check out these websites.
http://www.plasticsinfo.org/s_plasticsinfo/sec_level3_collapsed.asp?CID=702&DID=2830
http://www.americanchemistry.com/s_plastics/bin.asp?CID=1102&DID=4645&DOC=FILE.PDF
In 1988 the plastics industry, through the Society of the Plastics Industry, Inc., introduced its voluntary resin identification coding system. A growing number of communities were implementing recycling programs in an effort to decrease the volume of waste subject to rising tipping fees at landfills. In some cases, test programs were driven by state-level recycling mandates.
The code system was developed to meet recyclers' needs while providing manufacturers a consistent, uniform system that could apply nationwide. Because municipal recycling programs traditionally have targeted packaging – primarily bottles and containers – the resin coding system offered a means of identifying the resin content of bottles and containers commonly found in the residential waste stream.
For additional information, check out these websites.
http://www.plasticsinfo.org/s_plasticsinfo/sec_level3_collapsed.asp?CID=702&DID=2830
http://www.americanchemistry.com/s_plastics/bin.asp?CID=1102&DID=4645&DOC=FILE.PDF