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NYFORS AutoCoater 2

Designed for high strength applications, the AutoCoater 2™ restores the protective coating on spliced acrylate-coated optical fibers. It is fully automatic, allowing for operator skill independence in factory environments with high productivity and cost advantages.

Recoating compound is injected automatically into soft silicone recoating moulds identical to those used in NYFORS manual recoaters. These silicone moulds are easily exchangeable with no realignment required. With different sizes and custom moulds available, the operator can not only easily exchange moulds to meet requirements for different fiber and fiber coating diameters, but he can also choose whether to (a) recoat to uniform diameter that exactly matches the original fiber coating diameter, (b) recoat with a cross section slightly smaller in diameter than the original fiber coating (undersize), or (c) recoat with a larger diameter that overlaps the primary coating at each end of the recoat section (overcoating).

This provides a convenient way to swiftly change between different types of optical fiber and also makes the system easy to set up, optimize and rapidly reconfigure for different recoating applications and requirements. The AutoCoater 2™ with silicone moulds is therefore the ideal choice for fully automatic skill-independent recoating operations where flexibility is required to meet many different recoating needs and specifications.

Rapid exchange of recoating resin type

The customer customer-selected recoating compound is automatically injected from an easily attached 1 oz Nalgene bottle, functioning as the recoater reservoir tank. This greatly simplifies refilling in high volume production.

This bottle as well as the injection pump, supply lines, and injection needle may be removed and exchanged as a single unit. This completely eliminates the need to purge or cleanse the injection pump and supply lines when changing from one type of recoating resin to another. Another option when using several compounds in parallell is to operate the recoater in manual mode, using a syringe for manual resin injection into the mould.

The combination of mould sizes and mould types (for uniform and undersize recoating as well as overcoating) and the simplicity of exchanging recoating compounds underscores the flexibility of the soft mould AutoCoater 2™ as the most versatile and easily adaptable automatic recoater in the world.

Other features

Short curing times are achieved through an efficient UV LED array arranged along the length of the mould. Curing times depend on the fiber and fiber coating diameter as well as the properties of the customer-selected recoating resin, but are typically as short as 3 seconds which allows for very fast recoating operations with total cycle times of about 15 seconds – faster than any competing recoater on the market. Besides standard high-index materials, low-index recoating compounds can be cured.

Strength tests can be carried out with the linear clamps or mandrels (optional). Linear proof tests can be performed up to 22 N, while the mandrels allow for tensile tests with forces up to 100 N. Levels of force, pulling rate and hold times at maximum force are programmable.

The AutoCoater 2™ comes in an ergonomic, bench-top design for comfortable operation. The main operator interface is a user-friendly and easy-to-navigate GUI on the touch screen control panel. System software supports storable and user-defined programs for easy process change. Remote monitoring and supervision can be carried out through an Ethernet interface.

Short facts

  • Consistent, high quality recoating
  • Automatic and operator independent
  • Short cycle time
  • Linear or mandrel strength testing
  • Uniform diameter, overcoating and undersize recoating capability
  • Easy exchange of recoating resin type
  • No need for compressed air or vacuum
  • High and low index recoating


Technical Data

Curing time Programmable, 3 s typical
Cycle time 15 seconds typical
Light source UV LED
Wavelength 380-385 nm
Injection Automatic from 1 oz bottle
Mould mounting Exchangeable
Recoating length 34 mm and 55 mm
Recoating diameter 165, 250, 300, 400, 550, 730 & 900 µm*

Proof Testing

Linear proof test Programmable, 0-22 N
Mandrel tensile test (optional) Programmable, 0-100 N
Hold Time Programmable
Pull Rate 0.5-20 N/s
Display units lbs, kg, N, kpsi, GPa

Interface & Dimensions

PC connection Ethernet & USB flash drive
Power supply External 12 V DC, 60 W
Compressed air Not needed
Dimensions 270 mm x 210 mm x 115 mm
Weight 4.5 Kg