Teijin Aramid B.v.

Leonardus A G Busscher

Frederik Elkink

Jacobus Johannes Meerman

Jorrit Jong De

Jorrit De Jong

Ronald Eduard Hoogerwerf

Michel H J Van Den Tweel

Alexander L L Broekhof

Michel HJ Tweel Van Den

A cord including multifilament para-aramid yarn comprising filaments, wherein the filaments have a non-round cross section having a smaller and a larger dimension, where the cross-sectional aspect ratio between the larger and the smaller dimension is 1.5-10 and the smaller dimension of the cross section has a maximum of 50 &#x3bc;m and wherein the para-aramid has at least 90% para bonds between the aromatic moieties. The cords have excellent fatigue properties.

Cord comprising multifilament para-aramid yarn comprising non-round filaments

A method for producing a filament yarn from a para-aromatic polyamide, having an optically anisotropic aramid spinning solution filtered within a spinneret arrangement by using a filter having passage openings and extruded within the spinneret arrangement through a plurality of spinning orifices. The extruded anisotropic aramid spinning solution is guided via an air gap, stretched in the process, and collected in an aqueous coagulation bath. The optically anisotropic aramid spinning solution in the spinneret arrangement is fed to the spinning orifices via a flow resistor. The flow resistor is arranged closer to the spinning orifices than the filter, and the flow resistor and the filter are arranged at a distance to one another. The method may also include a para-aromatic polyamide filament yarn.

Method for producing a filament yarn from an aromatic polyamide

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Duiven, Netherlands

Leonardus A G Busscher