Two-Layer Can Strip Coating

Strip-shaped pre-product for manufacturing can lids or can tabs of a can, preferably a beverage can having an aluminium alloy strip with at least one first at least partial surface coating having a cross-linkable coating substance which is provided on the side of the aluminium alloy strip used for the outer side of the can,

• wherein
• the at least one first coating of the aluminium alloy strip has a degree of cross-linking of at least 20% to 80%, preferably 30% to 70%, more preferably 45% to 60%, wherein the degree of cross-linking is measured according to the “sol fraction test” referred to in the description and the aluminium alloy strip achieves an unchanged surface result of the coated side in a block test according to the description, wherein for the block test two blanks from the pre-product with their partially cross-linked, first coatings pointing in the same direction are placed on top of each other between two flat pressure bodies, the cut-outs laid on top of each other are pressed against each other over the pressure bodies with a pressure of at least 2.942 kPa and are heated and held for 24 hours in this state at 50° C. PMT, then the cut-outs are separated again and after the separation of the cut-outs the surface of the coating of the two cuts are examined for changes.