Series 840/803

Optical Fibre coating


Inner, soft UV-curable acrylate for encapsulation of the freshly drawn optical fibre

Basis Reactive mono- and oligomers
Application method Draw tower for optical fibres followed by secondary coating of series 841 (wet on wet or tandem procedure)
Form of supply Colourless resin
Technical Data
Density0,91 - 1,01 g/cm³ISO 2811-1 at 40°C
Viscosity2350 - 2750 mPasDIN 53019-1 cone/plate at 40°C
Flash point>100°CISO 1523
PreparationStir before use. Prevent to beat air bubbles into resin
CuringEffected by means of high-pressure mercury vapour lamps or Fusion bulbs
Process speedup to 1500 m/min
CleaningHERKULA special cleaning agent 35014
Shelf life: One year in a well closed bucket (<30°C) protected from light, Standard Packaging: 10 kg bucket
Observe your Material Safety Data Sheet as well as the instructions on the label
No evaporating solvent
  • No detectable influence on the properties of the optical fibres
  • Thermostable up to max. 150°C (3000 hrs tested)
  • Applicable for single- and multimode fibres
  • Operation temperature -60 °C to 150 °C
  • No excess attenuation at small bending radius
  • Excellent adhesion on glass
  • Version: 25/07/2014
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