Tips and ideas for using cold foils
  Layout creation when using cold foils

Planning for the cold foil

It is advisable to take the cold foil into consideration from the outset in the product design and all project decision making. The use of cold foil should be planned before the design is finalized. This helps ensures a harmonious design without the effect of something superimposed. 


Selecting designs

  • The foil reduces the spatial effect somewhat. It is therefore not recommendable to cover three-dimensional designs completely with foil.

  • In general, it should be investigated whether partial application of foil can enhance the design more effectively than full-surface application. 

  • Large-area designs or colored metallic objects lend themselves to cold foil decoration.

  • Filigree designs can also be well suited, whether as a localized or large-area design.

  • Designs with sharp edges are suitable for cold foiling. Soft transitions, on the other hand, can appear unclean. The required resolution would be too high for this process.

  • If something needs to be emphasized, it is also possible to take the opposite approach, i.e. to apply foil to the surrounding area in order to accentuate the design element.

  • Cold foil is wonderfully suited for creating a secondary design layer. For example, foil can be used to good effect to superimpose a design on a large patterned area.

  • The light-reflecting foil turns black into a shimmering dark gray. To achieve a deep black color, the foil should therefore be excluded from these areas.

  • The cold foil itself has a gray color value. This makes it unsuitable for rendering light areas. It is therefore better to exclude the foil from light areas. An alternative solution that KURZ recommends is to use the LIGHT LINE® Laser designs as a cold foil. The holographic foil reflects light differently than the silver-colored standard foil and therefore appears lighter. Their rainbow designs also deliver striking color reflections. 


Overprinting foil areas

  • When silver-colored cold foil is overprinted with specific proportions of cyan, magenta, yellow and black, it is possible to produce a gold color tone. The gold can be created in all possible gradations from light gold tones to almost bronze-colored deep gold nuances.

    100 % silver foil + 0% cyan + 10% magenta + 100% yellow and 0% black can be used to create a pure, light gold; without the silver foil, this tone corresponds to a slightly reddish yellow. By overprinting various proportions of process colors it is possible to produce a variety of custom metallic color tones. KURZ can provide specific examples of this on request.

  • The cold foil reduces the brightness value of the printing inks. It is therefore necessary to select a lighter color tone when overprinting.

  • When cold foil is overprinted with fine lines or lettering, the foil sheen reduces the contrast. A higher line thickness will make the printed design more recognizable or readable. The contrast is also relatively low when overprinting with a light color. In this case it is recommended to increase the ink coverage.


Using rasters

Rasterized foil produces a purer color tone when overprinted and makes color gradations more recognizable. This does, however, also reduce the gloss level and metallic effect somewhat. Rasterization is particularly useful when rending light metallic tones.


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