An Innovative accessoiry for an Xplore MC 15 HT; a tow impregnation die

An Innovative accessoiry for an Xplore MC 15 HT; a tow impregnation die
22.12.2020

An Innovative accessory for an Xplore MC 15 HT; a tow impregnation die.

Xplore is in a pro-typing phase of an innovative tow impregnation die (TID); an accessory for our MC 15 HT  and MC 40 compounder.

The newly designed TID can be easily mounted at the die exit of our larger compounders. The TID is accurately temperature-controlled via electrical heating elements. Hence, it enables the user to have better control of the flow properties of the polymeric material inside the die.

First initial prototype testing reveals that this TID enables you to coat multifilament fibres with a polymeric material. The ultimate challenge with coating multifilament fibre bundles is that ideally, each individual filament should be wetted with a polymeric material to prevent inconsistencies in the material properties, such as premature failure due to stress location, of the end product. The Xplore TID first spreads the fibre bundle in the die over the y-axis (I would say transverse-axis) using specially designed spreader pins, allowing the molten polymeric material to get in between each fibre, shortly said: basically, wetting each fibre individually.

Applications like UD-tape production with glass or carbon fibres or continuous fibre filament production for 3D-printing of composites will benefit from this technology. Now, each individual carbon fibre can be wetted (no voids or agglomerated unwetted carbon fibres present); complex shape and angles can be 3D printed without decreasing the structural integrity of a nascent 3D printed object.

See in Figure 1, showing the proof of principle attached where a multi-filament carbon fibre was coated with a polyester resin.

Xplore will inform you, on this platform, regularly about the progress of commercialisation of this Tow Impregnation Die.

Figure1. Impregnated carbon fibre

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