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.
FDA LNO Compliance
Meaning
Packaging safety guidelines from the United States Food and Drug Administration require a formal review of recycled plastics intended for food contact to ensure they do not migrate contaminants into food. Achieving fda lno compliance means a recycler has received a letter of no objection confirming that their processing technology safely removes contaminants from post consumer resin. This designation allows the recycled plastic to be used in specific food packaging applications.
Regulatory Approval
The review process involves evaluating the decontamination efficiency of the recycling system under worst case conditions. To secure fda lno compliance, the recycler must submit data from surrogate challenge tests that demonstrate the removal of volatile, semi volatile, and non volatile contaminants. This documentation is reviewed on a case by case basis.
Testing Protocol
Laboratories analyze the treated plastic using extraction and migration tests. Under the fda lno compliance framework, the residual concentration of contaminants must fall below a calculated threshold that corresponds to a dietary exposure of less than 1.5 micrograms per person per day. This quantitative standard is globally recognized.
Commercial Scope
The letter specifies the allowed food types, temperature conditions, and maximum recycled content percentages. This restricts the use of the certified resin to the validated parameters.