Stamicarbon B.v.

Jozef M Jansen

Louis C Krijger

Peter E Froehling

Laurentius W Steenbakkers

Nicolaas G Hoen

Caroline H Ipenburg

The present invention relates to a granulated thermoplastic polymer composition comprising granules incorporating 0.1-50% (vol) fiber bundles. The fiber bundles have a three dimensional orientation in each of the granules, and each fiber bundle contains at least 100 fibers. The present invention also relates to a process for producing a granulated thermoplastic polymer composition containing non-dispersed fiber bundles comprising the steps of mixing a thermoplastic polymer with fiber bundles at a sheer stress low enough to prevent the fiber bundles from falling apart, and the forming granules. A temperature of a dosage point where the fiber bundles are added to the thermoplastic polymer is below a processing temperature of the thermoplastic polymer. Each granule comprises 0.1 to 50% (vol) of the fiber bundles. The fiber bundles have a three dimensional orientation in each granule, and each fiber bundle contains at least 100 fibers.

Plastic granulate containing non-dispersed reinforcing fibre bundles

The invention relates to a plastic granulated material containing electrically conductive fibres, the degree of dispersion of which fibres in the granulated material is 0.10 at most, the degree of dispersion being the reciprocal value of the volume fraction in % of a granule occupied by electrically conductive fibre bundles and measured according to the threshold value method. Moulding compounds produced from the granules according to the invention have very high EMI values.

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Sittard, Netherlands

Jozef M Jansen