After the foils, water is further removed using flat suction boxes. The suction boxes remove the majority of the water, changing the stock consistency from 2% to 20% fiber content. Above the first couple of suction boxes a skeleton roll covered with wire may ride on the top of the paper mat. This roll called a “dandy roll” compresses the paper, releasing any trapped air and improving the surface. The dandy roll can be covered with various wire patterns, which may simulate the forming wire and may have recessed or raised elements-designs imparting a watermark onto the paper. In areas where the watermark elements, usually a wire design, are above the surface of the dandy roll, fewer fibers are allowed to settle, and the paper appears light. If the watermark elements are below the dandy roll surface, more fibers are allowed to settle than in the rest of the paper, and the paper appears darker in these areas.
You can opt to either a) buy an existing watermark paper off-the-shelf or b) choose to have your own logo, text, coat of arms, etc. as a bespoke watermark. For the custom watermark, this involves one of two processes 1) for smaller quantities (e.g. 2,000+ A4) we can produce your watermark paper using our patented process that can have your watermark paper ready to despatch within 7 to 10 days, or for more substantial orders (200,000 A4 sheets plus) we can get a custom dandy roller made at the mill, this works out more cost effective for higher volumes, however the lead time for this is in weeks, rather than days.
A non generic true watermark paper with unique security images embedded into the paper, which can only be viewed by translucent "pass through" light. SafeImage™ security paper also incorporates chemical inclusion protection, toner fuse adhesion, blue and red visible fibers, invisible fluorescent fibers, and most important; this very high-end security paper is available only to security printers with certified and secure facilities.