The code below is called the SPI resin identification coding system, developed by the American Society of the Plastics Industry in 1988.
Thermoplastics can be remelted, but thermosetting plastics can only be crushed and used as insulation.
As you can not mix plastics together they have to be separated into their different polymer types.
|Recycling No.||Abbreviation||Polymer Name|
|1||PETE or PET||Polyethylene Terephthalate|
|3||PVC or V||Polyvinyl Chloride|
|7||OTHER||Other plastics, including acrylic and nylon.|