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Recycling codes on products. Recycling codes are used to identify the materials out of which the item is made, to facilitate easier recycling process.The presence on an item of a recycling code, a chasing arrows logo, or a resin code, is not an automatic indicator that a material is recyclable; it is an explanation of what the item is made of.
Resin code for polyethylene terephthalate Polypropylene lid of a Tic Tac box, with a living hinge and the resin identification code, 5, under its flap. The Resin Identification Code (RIC) is a technical standard with a set of symbols appearing on plastic products that identify the plastic resin out of which the product is made. [1]
With a high strength-to-density ratio, HDPE is used in the production of plastic bottles, corrosion-resistant piping, geomembranes and plastic lumber. HDPE is commonly recycled, and has the number "2" as its resin identification code. In 2008, the global HDPE market reached a volume of more than 30 million tons. [2]
LDPE has SPI resin ID code 4 Schematic of LDPE branching structure. Low-density polyethylene (LDPE) is a thermoplastic made from the monomer ethylene.It was the first grade of polyethylene, produced in 1933 by John C. Swallow and M.W Perrin who were working for Imperial Chemical Industries (ICI) using a high pressure process via free radical polymerization. [1]
Based on 2019 data, the federal study estimated recycling rates at 15 percent for water-bottle plastic, 10 percent for milk-jug plastic, 3 percent for ice-cream tubs, 2 percent for grocery bags ...
The U.S. uses a code system, where numbers correspond to certain types of plastic bottles and types of paper. Codes for bottles/ containers are numbers 1-7 and 70-72. These numbers correspond to certain material and chemical composition as seen below. [11]
The recycling code for plastics was introduced in 1988 by the plastics industry through the Society of the Plastics Industry. [89] 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 ...
Plastic recycling is the processing of plastic waste into other products. [22] [23] [24] Recycling can reduce dependence on landfills, conserve resources and protect the environment from plastic pollution and greenhouse gas emissions. [25] [26] [27] Recycling rates lag behind those of other recoverable materials, such as aluminium, glass and paper.