Printing Ink Set off onto the Food Contact Face
Uncured printing ink components transfer mechanically onto unprinted food contact surfaces under reel pressure, requiring strict migration testing against specific regulatory limits.
Swiss Ordinance 817 023 21
Meaning
National legislative frameworks dictate the purity and identity requirements for printing inks and varnishes applied to consumer products within the Alpine federation to protect public health standards. This specific rule known as swiss ordinance 817 023 21 maintains a strict list of evaluated and unevaluated components that are permissible for use in the manufacturing of food contact materials. It governs the specific migration limits for hundreds of organic substances and sets the boundaries for what chemicals can be used in areas where setoff might occur.
The scope of the document is internationally recognized, often serving as the de facto guide for ink manufacturers in markets where local regulations are less detailed. Once a substance is identified as toxic or highly mobile, it is moved from the negative list into a banned category or given a low parts per billion limit.
Additive Registry
Compliance for polymer converters depends on verify that their ink sets use only chemicals found on the white list of evaluated safe substances. Under swiss ordinance 817 023 21, manufacturers divide their chemicals into Annex 6 categories based on the amount of toxicity data currently available to the government. This forces the ink industry to perform expensive studies to prove safety if they wish to keep using a specific colorant or initiator in the long term.
If a molecule is listed with a limit of ten parts per billion, it means no migration is allowed above the standard method detection limit. Packaging designers use this data to select high barrier films that ensure these migrants stay trapped on the outer layers away from the food ingredients.
Operational Duty
Converters are responsible for ensuring that the migration profile of the final printed article stays within the targets defined by the ordinance. By following swiss ordinance 817 023 21, the shop floor manager must adjust drying times and lamp intensity to minimize the presence of uncured monomers. Records of these adjustments must be kept as part of the formal compliance dossier available to regulators during a surprise inspection.
Even if the print is on the outside, the rule assumes that contact during storage in stacks can transfer the ink chemicals to the inside. Modern printing houses buy resin and ink in matched sets to make sure the combined chemistry adheres to these limits with a reliable safety margin.
Market Sourcing
Global procurement teams often prefer inks that comply with this specific ordinance because it provides access to the highest quality shelf spaces worldwide. Following swiss ordinance 817 023 21 lowers the total cost of legal risk even if the item is not intended for sale within the federation itself. Using a single global safety standard simplifies the formulation process and avoids the need for maintaining separate inventories for different regions.
While compliant ink is more expensive than basic industrial variants, the economic saving of avoiding a chemical recall or product rejection far exceeds the initial price gap. Consistent batch testing confirms that suppliers are maintaining the purity targets required by this prestigious regulatory benchmark.