Mixing element for screw extruder

B - Operations – Transporting – 29 – C

Patent

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Details

B29C 47/64 (2006.01) B29B 7/42 (2006.01) B29C 47/60 (2006.01)

Patent

CA 2312369

A mixing element for a screw extruder comprises a conventional element with a taper on one lobe and on one lobe broad surface The elements may be used individually or combined in blocks, with the elements of a block oriented in various combinations. The block may comprise two or more elements. The tapered lobes provided reduced pressure and temperature of the process as compared to prior ar mixing elements. Also, more graduated control over temperature and pressure are provided according to the taper, the number of element used in a process and the relative lobe orientations in a machine.

L'invention concerne un élément de malaxage utilisé dans une extrudeuse à vis sans fin, comprenant un élément conventionnel pourvu d'un élément conique placé sur un lobe et sur une large surface lobée. Ces éléments peuvent être utilisés individuellement ou en combinaison dans des blocs, avec les éléments d'un bloc orienté dans différentes combinaisons. Les blocs peuvent comprendre plusieurs éléments. Les lobes pourvus d'un élément conique fournissent une pression et une température réduites par rapport aux éléments de malaxage de l'état de la technique. On obtient également une régulation plus progressive en fonction de la conicité, du nombre d'éléments utilisés dans le procédé et des orientations relatives d'un lobe dans une machine.

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