A process and apparatus for pressing materials

Details A process and apparatus for pressing materials A process and apparatus for pressing materials

B - Operations, Transporting

30

B

B30B 9/04 (2006.01) B30B 11/02 (2006.01) B30B 11/26 (2006.01)

Patent

CA 2243705

The invention relates to a process and apparatus (20) for pressing materials (21) in which a material (21) is compressed by a piston that vibrates lengthways at an ultrasonic frequency to reduce the compression resistance of the material and to augment the compression effect; in practice, "static" compression, whereby an element is moved under the effect of pressure applied to it, is replaced by a succession of high-frequency blows; the process can be used in particular for squeezing materials of vegetable or animal origin in order to extract the juices from them and for manufacturing processes involving materials subject to plastic deformation.

L'invention concerne un procédé et un appareil (20) pour presser des matériaux (21). Dans cet appareil, un matériau (21) est comprimé par un piston qui vibre sur sa longueur à une fréquence d'ultra-sons pour réduire la résistance à la compression du matériau et pour augmenter l'effet de compression. En pratique, la compression "statique", selon laquelle un élément est déplacé sous l'effet de la pression à laquelle il est soumis, est remplacée par une succession de coups hautes fréquences. Ce procédé peut être utilisé, en particulier, pour presser des matériaux d'origine végétale ou animale, afin d'extraire leur jus. Il peut également être mis en oeuvre dans des processus de fabrication comprenant des matériaux soumis à une déformation plastique.

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