ASTM D7611/D7611M-20,Standard Practice for Coding Plastic Manufactured Articles for Resin Identification.
The size of this standard pdf file is 1.31M.
ASTM D7611/D7611M-20 stipulates the types, names, and sizes of Codes for those material types specified in Table 1.
ASTM D7611/D7611M-20 is based upon the system developed in 1988 by the Society of the Plastics Industry, Inc (SPI). It is possible that some states or countries will have incorporated the original SPI practice into statute or regulation. In those situations, that statute or regulation takes precedence over this standard.
ASTM D7611/D7611M-20 shall only apply to new tooling. Existing molds that already incorporate older versions of the SPI RIC may be modified, but modification is not required.
Addition of Code Numbers
Assign numbers sequentially from the last assigned integer number with no subsets.
Do not assign new numbers for resins already included as members of a previous number code other than”7.”
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