Viscous Dissipation Effects on the Coating Resin Flow Characteristics in High-Speed Optical Fiber Coating Process

Kyoung Jin Kim

doi:10.4028/www.scientific.net/KEM.656-657.496

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 656-657Viscous Dissipation Effects on the Coating Resin...

Viscous Dissipation Effects on the Coating Resin Flow Characteristics in High-Speed Optical Fiber Coating Process

Abstract:

Since the fiber drawing speed continues to increase in the modern mass manufacturing of optical fibers, the effects of viscous heating on the coating liquid flow could be significant in the capillary coating die of optical fiber coating applicator. Present study investigates the viscous coating resin flows in the micron-sized channel of coating die with temperature dependent viscosity. The computational results find the substantial temperature increase near the die wall and plug-like velocity distribution due to localized viscous heating. Also, final coating thickness is affected by the change of coating die diameter when the fiber drawing speed is high. Thus, the design of glass fiber coating process at high drawing speed requires careful consideration of several key operational parameters.

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Periodical:

Key Engineering Materials (Volumes 656-657)

Pages:

496-499

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.656-657.496

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Online since:

July 2015

Authors:

Kyoung Jin Kim*

Keywords:

Capillary Coating Die, CFD, Fiber Coating, Optical Fiber, Viscous Heating

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