UNDERBLANKETS

          FB Cork Underblankets

          Developed in response to our customers needs for a sharper definition of fine images, particularly when spot coating. Tested by Komori Limited to evaluate the lay of U/V and Aqueous Varnishes; and by Du Pont to evaluate their Cyrel CL plates.

          The tests realised the following benefits:

          • Improved transfer of coatings with better gloss (where applicable) with U/V and water based coatings.
          • Reduced roller and cylinder pressures leading to reduced plate wear.
          • Faster make-ready through one-piece packing.
          • Reduced downtime.
          • Sharper definition of fine images - important for spot coating.
          FB Cork Underbankets are also used to further improve the performance of compressible and conventional offset blankets. The blankets are based on natural cork which is laminated to a fabric carrier for added strength. They can be supplied in any size up to 60 inches (1524mm). Standard callipers produced are:

          inchesmm
          0.0401.02 minimum
          0.0601.52
          0.0681.73
          0.0802.03
          0.0842.13
          0.1253.18

          Other callipers can be produced if required.

          John Matthews of Kamori, Leeds, England carried out tests which compared FB Cork Underblankets with conventional packing by evaluating the lay of UV and Aqueus Varnishes. The conclusion: I feel that by using Farnbeck's FB Cork Underblanket it brings out the bet value of gloss, and by applying less pressure to applicating roller and paper, there is less chance of anomalies appearing on the printed sheet using Du Pont Cyrel relief plates. The blanket used for the test was transferred to machines at five various printing sites and the improvement in quality was immediately obvious. On examination the blanket had lost none of it's recovery properties or thickness.
          John Matthews, Kamori

          Underlay blankets

          Farnbeck produce a complete range of underlay blankets for letterpress, litho and offset printing. The blankets are made from pre-stretched 100% cotton with a rubber laminate construction and a final coating of polymer. This provides high quality, strength, resilience and a high degree of stability. The recently developed Rhino Underlay with cork interply provides even better resilience and recovery.

          FB40 (Faceless) Underlay

          (Can also be used as Damper Flap Material).

          Technical Information

          2 ply 100% cotton with synthetic rubber interply.
          Thickness1mm
          Tensile strength WARP (Machine direction) 2920
          Newtons (650lbs/sq.in.)
          Weft (Cross machine direction) 1170
          Newtons (260lbs/sq.in.
          ColourWhite or black
          Hardness80 Shore

          FB40F Underlay

          Technical Information

          2 ply 100% cotton with synthetic rubber interply.
          Thickness1mm
          Tensile strengthWarp (Machine direction) 2690 Newtons (600lbs/sq.in.).
          Weft (Cross machine direction) 1050 Newtons (235lbs/sq.in.)
          ColourBlack
          Hardness80 Shore

          FB Rhino Underlay

          For a firmer packing and improved recovery.

          Technical Information

          Thickness1.4mm - 2.5mm
          Hardness85 Shore
          SurfaceOil resistant synthetic rubber
          BackingRubber and fully stretched cloth interply

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