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Online hybrid yarns for advanced thermoplastic composites

News International-French

25 Feb 2013

JEC Europe 2013 - The IPF provides a pilot spinning plant for tailored online hybrid yarn manufacturing

Thermoplastic composites offer the advantages of short production cycle capabilities which make them feasible for high-volume production. In contrast to thermosetting composites, they exhibit better impact resistance, recyclability and in the case of PLA, even biodegradability. However, fibre impregnation is more complex than for thermosets, due to the high melt viscosity of the thermoplastic matrix. Different impregnation techniques have been proposed and put into practice. The most promising routine is provided by online hybrid yarns that are based on the principle of homogeneously mixing matrix and reinforcing fibres during melt spinning. In contrast to other techniques, such as air jet texturing, the reinforcement fibres are not damaged during commingling. The high mechanical performance of thermoplastic composites tends to be more especially due to the homogeneous fibre/matrix distribution of online hybrid yarns.

The IPF provides a pilot spinning plant for tailored online hybrid yarn manufacturing. Upon request, the following parameters can be easily modified:

  • Range of glass fibre diameters: 9-17 µm
  • Varying fibre volume content: 35-65 vol%
  • Applicable for different polymeric matrices: PP, PA, PBT or PLA
  • Customized sizing development and sizing application

Online hybrid yarns can be used for textile fabrics (weaves, warp-knits, braids, weft-knits), UD tapes or long fibre reinforced thermoplastics (LFT).

Booth T66