Folabase Excel A
A soft, self-adhesive underpacking foil
The self-adhesive polyester underpacking foils of the Folabase range are characterised by high resistance to swelling in the presence of damping solution and washing agents. They are used to adapt the cylinder circumference and printing length on sheet-fed and web presses. The self-adhesive versions support automation, particularly on presses with automatic plate changers, and simplify subsequent handling.
Folabase Excel A is an advancement of the proven underpacking foil Folabase Soft A in the thickness ranges from 0.7 to 1.5 mm and reliably supports the achievement of outstanding printing results in cylinder circumference and printing length adjustment in offset presses.
A significant improvement of the plane parallelism of the underpacking materials at larger thicknesses has been achieved by using a new raw material.
The combination of dimensionally stable polyester and a flexible polymer offers outstanding dimensional stability in thickness and format, as well as a extensive smash resistance.
Compared to paper substrates, the board is largely resistant to swelling caused by dampening water or cleaning agents. It can be reused frequently or used directly over a longer period of time, making it a particularly sustainable option.
| Application Range: |
| Corrections of cylinder circumference and printing length on sheet-fed presses • specifically recommended for use on blanket cylinders |
| Main features: |
| Soft surface • high bond shear, thus no displacement • high temperature resistance of the adhesive up to 60 °C • easy handling • easily repositionable • high resistance to swelling • easy disposal |
| Material | Polyester-Polyurethan-Laminate, adhesive on one side, silicon-protection paper |
| Colour | white-transparent |
| Adhesive | Water based, acrylate-based, halogen-free, thickness 9 - 13 g/m² |
| Tack value | 9 - 14 N (based on Finat 1) |
| Shear bond strength (60°) | > 16 h (based on Finat 8) |
| Protection paper | 80 g/m², with silicon coating on one side |
| Thicknesses | 0.70 - 1.50 mm (see below), tolerance base foil thickness +/- 10% |
| Minimum order quantity: | 5 pieces; Formats smaller than 50 x 70 cm: 10 pieces |
| Calculation width: | 1 300 mm (Effective width: 1 270 mm) |
| Thickness | Ref. no. | Thickness | Ref. no. | |
|---|---|---|---|---|
| 0.70 mm | 031770/SKL | 0.90 mm | 031790/SKL | |
| 0.75 mm | 031775/SKL | 0.95 mm | 031795/SKL | |
| 0.80 mm | 031780/SKL | 1.50 mm | 031791/SKL |
Overview Underpacking Materials
Overview Product Range
Printing blankets, underpacking material, measurement instruments and press room accessories: Download here the current product range brochure (0.9 MB).