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maroland releases lightweight paper performance package

Friday, February 18, 2011

Press release from the issuing company

Although light weight paper is a niche application, these substrates are used in almost all printing industry segments: in commercial printing for mailings and inserts, in publications printing for songbooks and loose-leaf binders, in packaging printing for packet inserts, and in forms printing for billheads.

Printing lightweight paper by sheetfed offset generally does not permit high speeds because the material is less stable than material between 0.1 and 0.3 millimeters thick and cannot run reliably through the press. There are often quality constraints with lightweight paper: dog-eared corners, creasing, and small tears. For printing companies who process a relatively high proportion of jobs on lightweight paper, these constraints are annoying. Now manroland has introduced a Lightweight Paper Performance Package for the ROLAND 700 series. The results of extensive research and field tests include numerous technical solutions focusing on feeder, infeed, delivery, and antistatic equipment. The performance package can increase production output by 25 percent or more. The increased output not only comes from a higher average printing speed but in particular through reducing or avoiding press stoppages in the feeder or infeed area through optimization of sheet separation and sheet feeding.

The performance package also provides straight-edged delivery stacks, which increases productivity in the finishing operations. A series of extensive tests have shown that production output is considerably higher – with 50 and 60 gsm paper, speeds of 15,000 sheets per hour and more are achievable depending on paper quality. There are related factors that are critical for efficient printing of lightweight paper: room temperature (ideal 18 until 22 °C), air humidity (ideal 55 until 60 percent), pile humidity (ideal 45 until 55 percent), pile storage (separate, not stacked), and pile acclimatization time in the pressroom (ideal at least 48 hours). Field tests have shown that printing lightweight paper is now possible with much fewer press stoppages, which increases productivity. Printers confirm that the sheet travel settings for ROLAND 700 presses are now much more user-friendly and "forgiving".


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