SPI Symbols (Society of the Plastics Industry)
The Society of the Plastics Industry (SPI) introduced its resin coding system in order to identify the various resins found in plastic bottles and rigid containers and to make sorting and recycling plastic bottles and containers easier for recyclers in Canada. [Guidelines p. 23] The code has no other purpose. Despite the similarity in appearance between the SPI symbols and the Mobius loop, the presence of an SPI code does not indicate that the product is recyclable or is recycled locally. Nor is it meant as a guide for safe use for food or beverage contact, or as an indicator of the intended use of the bottle or container. Recycling firms have varying standards for the plastics they accept, and therefore not all types of plastic are recycled at every facility. Consumers will need to check with their municipality to determine what types of plastics are collected.
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