Photoinitiator Migration Limits in Food Contact Print Finishes
Photoinitiator migration limits demand complete photopolymer conversion or functional containment to keep extractable residues below 10 parts per billion.
CEPI Recyclability Method 2.0
Recyclability Standard
Standardized laboratory testing by the Confederation of European Paper Industries simulates industrial paper recycling processes to determine the repulpability of paper-based packaging. Utilizing the cepi recyclability method 2.0, laboratories evaluate how easily paperboards disintegrate and how much fiber can be recovered. This test focuses on the behavioral properties of coatings and adhesives when exposed to standard pulping conditions.
It provides a benchmark for evaluating sustainable packaging designs.
Laboratory Assessment
Measurement of coarse and fine rejects helps quantify the share of material that cannot be processed by standard paper mill equipment. High levels of adhesive residues or plastic films can clog screening systems, which reduces the efficiency of the recycling line. By measuring the dry weight of these rejects, the procedure assigns a clear performance grade to the tested packaging.
This numeric score allows packaging designers to compare different barrier materials.
Design Compliance
Application of this testing protocol has become a prerequisite for launching new paperboard packaging designs in highly regulated markets. Since many modern cartons rely on polymer barriers for moisture resistance, designers must prove that these layers separate easily from the fiber during repulping. The standard outlines specific steps for fiber recovery and screening to check if the recycled pulp is free from sticky contaminants.
This testing helps manufacturers modify their raw material choices before mass production begins. The methodology ensures that paperboard packaging can be returned to the circular economy without disrupting the operations of industrial mills.