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Seven numerals in a triangle of chasing arrows, identifying which plastic an item is made of. The group exists to correct a single widespread error: the codes identify a resin and assert nothing whatever about recyclability. The arrows are borrowed from the Mobius loop and are the reason the mistake is made. Codes 1 and 2 are widely collected, 3 to 7 mostly are not, and 7 is not a material at all but a residual category covering everything else.
A chasing-arrows triangle around the numeral 1, identifying PET.
A chasing-arrows triangle around the numeral 2, identifying HDPE.
A chasing-arrows triangle around the numeral 3, identifying PVC.
A chasing-arrows triangle around the numeral 4, identifying LDPE.
A chasing-arrows triangle around the numeral 5, identifying polypropylene.
A chasing-arrows triangle around the numeral 6, identifying polystyrene.
A chasing-arrows triangle around the numeral 7, meaning any other plastic.
Alphanumeric codes (such as PAP, FE, ALU, GL) identifying non-plastic packaging material composition under EU rules, parallel to the plastics resin codes.
Two curved arrows with the letters ALU, marking aluminium packaging.