For an optimum printing result in the offset printing process, among others, the absolutely even pressure of the printingcylinders against the entire area is the decisive factor.Irregularities lead to stripes or cloudy spot, to thrusting and folding, to fluctuating dot gain etc. Underpacking sheets having different thicknesses ensure the proper pressure.
The accurate and uniform property of the papers as far aspossible with regard to density, surface and thickness isimportant. No willingness to compromise in theprecision: Press Parts underpacking sheets are manufactured in accordance withISO Standards for calibrated materials.
In this process irregularities are eliminated and the paper is compressed to a minimum of its volume. The required tolerances of +/-0,01 mm/m2 are not only achieved, but clearly fall below.Only the original provides optimal results: for a smooth printing process underpacking sheets in different thicknesses are required.
We are able to offer packing sheets punched for some Heidelberg presses, contact us for more information.