plastic identification / recycling code
when working with plastics there is often a need to identify which
particular plastic material has been used for a given product.
most consumers recognize the types of plastics by the numerical coding
system created by the society of the plastics industry in the late 1980s.
there are seven different types of plastic resins that are commonly used to
package household products. the identification codes listed below can be
found on the bottom of most plastic packaging.
#1- polyethylene terephthalate (PET)
soda & water containers, some waterproof packaging, tennis balls.
#2 - high-density polyethylene (PE)
milk, detergent & oil bottles. toys and plastic bags.
#3 - vinyl / polyvinyl chloride (PVC)
food wrap, vegetable oil bottles, blister packages.
#4 - low-density polyethylene
many plastic bags. shrink wrap, garment bags.
#5 - polypropylene
refrigerated containers, some bags, most bottle tops,
some carpets, some food wrap, chairs (back/seats).
#6 - polystyrene
throwaway utensils, meat packing, protective packing.
#7 - other. usually layered or mixed plastic.
no recycling potential - must be landfilled.