Mechanical Greaseproof Paper Grade Selection for Bakeries and Fast Food Packaging
Optimize mechanical greaseproof paper selection by specifying 80-88 SR refining and 15000+ s Gurley porosity to secure non-PFAS grease resistance.
PFAS Replacement
Barrier Chemistry
Fluorinated chemistry alternatives function as non-stick or moisture-resistant coatings for cellulose-based food packaging materials. pfas replacement substances eliminate the synthetic organofluorine chains that persist in environmental cycles by utilizing hydrocarbon waxes, silicones, or proprietary polymer dispersions. These agents modify the surface energy of paper stocks to prevent oil and water breakthrough during product contact. Performance limits define the scope of these chemistries because oil holdout capacity often drops when temperatures rise during hot fill operations.
Performance Expectation
Converters apply these substances during the size press stage or via blade coating to establish a protective film against polar and non-polar liquids. pfas replacement formulations require specific coat weights to match the legacy performance of legacy fluorochemicals. Testing protocols confirm the efficiency of these new agents by measuring the cobb value or the kit test score after long term exposure. Precise drying profiles prevent the chemical migration that causes premature degradation of the fiber structure.
Material Validation
Regulators mandate the assessment of these substances through extractable testing to confirm that the chemistries do not migrate into food at levels exceeding safety thresholds. pfas replacement additives undergo scrutiny regarding their degradation products and the toxicological profile of their constituent monomers. Mill technicians monitor the sheet moisture profile and the drying rate during production runs to ensure the integrity of the barrier remains constant. Consistent barrier functionality reduces the necessity for additional plastic layers and simplifies the disposal path for paper recycling streams.