Dynamic Relative Humidity Creep Decay in Corrugated Packaging Substrates
Dynamic relative humidity cycling drives exponential creep decay in corrugated board through mechano-sorptive bond cleavage, requiring dynamic safety factors.
Food Contact Migration BfR XXXVI
Safety Regulation
Compliance standard specifies the safety requirements for paper and board intended to come into contact with food products in the European market. Food contact migration bfr xxxvi regulation limits the transfer of chemical constituents from the packaging into the food to prevent health risks or sensory changes. It is issued by the German Federal Institute for Risk Assessment and is recognized as a benchmark across the industry.
Migration Limit
Requirements cover the purity of the raw materials, the types of additives allowed and the maximum permissible levels of specific contaminants like mineral oils or fluorinated compounds. Manufacturers must provide a declaration of compliance based on laboratory migration testing. These tests use food simulants like ten percent ethanol or vegetable oil to measure the quantity of substances that move across the barrier.
Chain Verification
Brands selling in Europe must ensure their primary packaging meets these criteria to avoid product recalls. Using virgin fibre is a common strategy to minimize the risk of unknown contaminants from recycled sources. If recycled board is used, a functional barrier like a polymer coating or a special internal treatment is often required.
Documentation of the entire supply chain is necessary to prove that no unauthorized substances were introduced during production. Laboratory audits confirm that the testing protocols match the requirements of the standard.