Improved flapper assembly for producing a curly puff extrudate

Details Improved flapper assembly for producing a curly puff extrudate Improved flapper assembly for producing a curly puff extrudate

A - Human Necessities

21

C

A21C 11/16 (2006.01) A23L 1/00 (2006.01) A23L 1/18 (2006.01) A23P 1/12 (2006.01)

Patent

CA 2501332

In the process of forming a curly puff extrudate (20), an improved method of applying a controlled pressure to the flapper (32, 82) of the extrusion apparatus is performed using a penumatic system. A rotary actuator (80) applies a near constant pressure to the flapper (32, 82). Alternatively, a pair of telescoping tubes connected to the flapper (32, 82) and an air pressure source can apply a near constant pressure to either the proximate or distal end of the flapper (32, 82). Further in the alternative, a linear actuator can be used to provide a near constant pressure to the flapper (32, 82). As a result of the applied pressure to the flapper (32, 82), the pitch in the curls of the curly puff extrudate (20) can be more predictably controlled.

L'invention concerne, lors du processus de formation d'un extrudat (20) soufflé spiralé, un procédé amélioré d'application d'une pression régulée au clapet (32, 82) d'un appareil d'extrusion est exécuté au moyen d'un système pneumatique. L'invention concerne également un actionneur tournant (80) qui applique une pression presque constante au clapet (32, 82). Dans un autre mode de réalisation, deux tubes télescopiques reliés au clapet (32, 82) et une source de pression d'air appliquent une pression presque constante à l'extrémité proximale ou à l'extrémité distale du clapet (32, 82). En outre, on peut utiliser un actionneur linéaire pour conférer au clapet (32, 82) une pression presque constante. Du fait de la pression appliquée au clapet (32, 82), le pas des boucles de l'extrudat soufflé spiralé peut être régulé de façon plus prévisible.

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