Post-Consumer Polyester Non-Aqueous Volatile Desorption Kinetics Baseline
Non-aqueous volatile desorption kinetics in post-consumer polyester depend on flake thickness, Arrhenius diffusion limits, and sweep gas partial pressures.
EFSA Decontamination Criteria
Meaning
Food contact regulations in Europe mandate that recycling processes for post-consumer plastics must demonstrate a specific level of contaminant reduction to ensure consumer safety. Compliance with the EFSA decontamination criteria requires the recycling process to reduce potential chemical contaminants to concentrations that do not risk human health. This evaluation focuses primarily on the reduction of volatile organic compounds and post-consumer contaminants.
Safety Protocol
Recycling equipment manufacturers must run tests to prove that their reactors can remove volatile contaminants from shredded plastic flakes. These tests use specific chemical markers to simulate real-world contamination scenarios before the material is cleared for food packaging.
Cleaning Efficiency
Solid-state polycondensation and high-temperature vacuum extrusion are the principal mechanical methods used to drive out volatile species. High vacuum levels and elevated temperatures increase the diffusion rate of contaminants out of the polymer matrix, which ensures the treated flakes meet the rigorous safety requirements.
Compliance Threshold
The European Food Safety Authority requires that the dietary exposure to any contaminant from recycled plastic does not exceed a set migration limit of 0.0025 micrograms per kilogram of body weight per day. This conservative limit ensures that even highly contaminated input streams are processed to a level that is safe for infants and adults alike.