Specifications poster production To achieve optimum impact, there are a few simple yet important rules to be observed during the production phase. Paper requirements The paper to be used is an important quality attribute in poster production. APG|SGA does not produce its own paper, nor is there any paper certified by APG|SGA. However, the requirements are set out. Different paper is used for the production of wet or backlit posters. Wet posters The wet poster is folded and soaked in water so that it becomes supple for posting and bonds with the adhesive. For this type of processing, the paper must be able to absorb water and must not disintegrate in water (water resistance). Only use Blueback/Chantegris paper to produce wet posters.
Backlit posters Backlit posters are hung in a backlit box and illuminated from behind. Unlike wet posters, the paper should be firmer and absorb as little moisture as possible, to minimize crinkling. For optimum transparency, only use whiteback backlit poster paper, which has a white back. Backlit posters F12L/LR, F200L/LR Whiteback backlit poster paper Reverse side white 135–150 g/m 2 Both sides coated Backlit posters cannot be modified with add-ons or snipes.
For optimum adhesion, the reverse side of the poster must be rough. For full-surface, dark visuals, uncoated paper is preferable, as this prevents cracking in the fold.
Wet poster F4/F12/F200/F24 Blueback/Chantegris paper Bright white 110–120 g/m 2 One side coated Grain–long Wet posters can be modified with add-ons or snipes.
Important to know If you have your posters printed abroad, please bear in mind that different rules may sometimes apply to poster technology, such as dry-gluing processes, different paper, different overlapping, etc.
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Due to the production method used, the paper has a grain, called the machine direction. This machine direction is crucial in poster printing. When the poster is soaked, the paper expands horizontally or vertically by up to 4 cm. Because of this, the machine direction has a major impact on the size of the poster. Printing must be set to grain-long in the machine direction. Otherwise, the quality will be compromised and distortions will occur.
