A - Human Necessities – 23 – P
Patent
A - Human Necessities
23
P
A23P 1/12 (2006.01) A23N 17/00 (2006.01)
Patent
CA 2693981
Improved, high Specific Mechanical Energy extrusion systems (20) are provided including a single or twin extruder (22) and an upstream preconditioner (24). The extruder (22) includes an elongated barrel (26) with at least one elongated, axially flighted, rotatable screw assembly (58) therein. The barrel (26) includes a mid-barrel variable restriction valve assembly (32), and the screw assembly (58) has a disrupting/homogenizing screw section (66) therein upstream of the valve assembly (32). The screw section (66) includes a plurality of alternating pitch screw parts (82- 92). Preferably, the barrel (26) also has an atmospheric vent (36) downstream of the vaive assembly (32).
L'invention concerne des systèmes d'extrusion à énergie mécanique spécifique élevée améliorés (20) comprenant une extrudeuse unique ou double (22) et un dispositif de préconditionnement amont (24). L'extrudeuse (22) comprend un cylindre allongé (26) ayant au moins un ensemble de vis rotative allongée à filet axial (58) dans celui-ci. Le cylindre (26) comprend un ensemble de soupape de restriction variable à mi-cylindre (32), et l'ensemble de vis (58) a un tronçon de vis d'interruption/homogénéisation (66) dans celui-ci en amont de l'ensemble de soupape (32). Le tronçon de vis (66) comprend une pluralité de parties de vis à pas alterné (82 à 92). De préférence, le cylindre (26) a également un évent atmosphérique (36) en aval de l'ensemble de soupape (32).
Plattner Brian S.
Rokey Galen J.
Gowling Lafleur Henderson Llp
Wenger Manufacturing Inc.
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