Label Inks that have received APR Critical Guidance Recognition
Several companies have received APR Critical Guidance Recognition for label inks for PET bottles. Significant data is available to determine whether a label ink may be compatible with PET recycling, and APR offers test methods to verify this.
REQUIRES TEST RESULTS
Direct printing other than date coding
Historically, inks used in direct printing tend to bleed or otherwise discolor the PET during the recycling process or introduce incompatible contaminants that reduce the value of the RPET. The specific ink must be tested to determine its effect.
Inks that might stain PET flake in the wash process
Some label inks bleed color in the reclamation process, and that color may re-deposit on the PET flake suspended in the wash water. Discoloring the PET in this way significantly diminishes its value for recycling.
In order for any of these label inks to be considered Preferred Design, the specific items must have been tested and found Preferred based on the test results. If these items have not been tested, they are considered Detrimental to Recycling. Testing will determine the appropriate category.
Non-staining label inks that have received Critical Guidance Recognition are commercially available. Companies that are considering label inks and are unsure of their compatibility with recycling should ask their suppliers to provide APR test results.