B - Operations – Transporting – 29 – B
Patent
B - Operations, Transporting
29
B
B29B 9/12 (2006.01) H01C 1/00 (2006.01) H01M 8/02 (2006.01)
Patent
CA 2504475
A highly filled composite is formed by extruding through a multiple screw extruder a thermoplastic resin and sufficient filler so that an autogranulating extrudate exits the extruder barrel. The extruder is operated without an exit manifold, strand die or breaker plate. The extrudate forms irregularly shaped granules. The granules provide a molding composition that can be used to form highly filled molded articles such as fuel cell separator plates and end plates by compression, injection or compression-injection molding.
L'invention un composite hautement chargé formé selon un procédé consistant à extruder une résine thermoplastique et suffisamment de charge à travers une extrudeuse à vis multiples pour qu'un mélange extrudé formant un granulé quitte le corps de l'extrudeuse. L'extrudeuse est utilisée sans collecteur de sortie, sans tête d'extrudeuse ou grille. Le mélange extrudé forme des granules de formes irrégulières. Ces granules fournissent une composition de moulage pouvant être utilisée pour former, par moulage par compression, par injection ou par injection-compression, des articles moulés hautement chargés, tels que des plaques de séparation et des plaques d'extrémité,
Bentz Bridget A.
Boone Mary R.
Driscoll Paul D.
Widagdo Soemantri
3m Innovative Properties Company
Smart & Biggar
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