Chemical Characterization of Food Packaging Varnish Raw Material Changes
Chemical characterization of varnish raw material changes demands spectroscopic conversion tracking and chromatographic migration screening to prevent food contact failures.
European Union 10/2011
Regulatory Requirement
Legal mandates regarding plastic packaging in the food supply chain ensure consumer safety by controlling the migration of chemical substances. The european union 10/2011 regulation establishes a union list of authorized monomers and additives that can be used in the manufacture of plastic articles. It sets specific migration limits for individual substances and an overall migration limit for the material as a whole.
Migration Testing
Evaluation of the plastic involves exposing the material to food simulants that mimic the behavior of different food types under specific temperature conditions. Laboratory technicians use liquids such as acetic acid or vegetable oil to measure how much of the chemical transfers from the package to the contents. The duration of the test depends on the intended shelf life and the storage conditions of the final product.
Materials that exceed the migration limits are deemed unsafe for food contact and cannot be placed on the market. Precise analytical methods are required to detect low concentrations of migrants in the simulants. Documentation must include a declaration of compliance that tracks the material through the entire supply chain.
Application Limit
Multilayer materials that combine plastic with other substances must still meet the safety standards for the contact layer. The regulation does not cover paper or board unless they are part of a plastic laminate. This framework defines the legal responsibility of the manufacturer to ensure the safety of their products.
It provides a standardized method for assessing the risk of chemical exposure from food packaging.