{"id":14826,"date":"2021-04-15T03:27:43","date_gmt":"2021-04-15T08:27:43","guid":{"rendered":"https:\/\/www.insta-pro.com\/?p=14826"},"modified":"2026-01-07T13:36:57","modified_gmt":"2026-01-07T19:36:57","slug":"extrudeuse-contre-expandeur","status":"publish","type":"post","link":"https:\/\/instapro.spinuhost.com\/fr\/blog\/ingenierie-et-procede-dextrusion\/extrudeuse-contre-expandeur\/","title":{"rendered":"Extrudeuse contre Expandeur"},"content":{"rendered":"<p>Nous discutons souvent avec des clients qui utilisent de mani\u00e8re indiff\u00e9renci\u00e9e les termes \u00ab\u00a0extrudeuse\u00a0\u00bb et \u00ab\u00a0expandeur\u00a0\u00bb.\u00a0 On comprend ais\u00e9ment comment cette confusion peut survenir.\u00a0 Les deux types de machine ont des fourreaux qui transforment les produits en les \u00ab\u00a0extrudant\u00a0\u00bb en sortie.\u00a0 Or, il faut comprendre les diff\u00e9rences entre ces deux processus afin de maximiser la qualit\u00e9 de votre produit final.<\/p>\n<p>L\u2019un des types de machine les plus r\u00e9pandus est l\u2019expandeur \u00e0 \u00ab\u00a0filetage interrompu\u00a0\u00bb. \u00a0\u00c0 l\u2019int\u00e9rieur du fourreau se trouvent assembl\u00e9s un tr\u00e8s long arbre et une vis sans fin.\u00a0 Contrairement \u00e0 une extrudeuse \u00e0 vis unique classique, il existe une s\u00e9rie de broches qui aident \u00e0 cr\u00e9er un cisaillement, tout comme la forme de la vis.\u00a0 Les jeux sont augment\u00e9s pour permettre au produit de se m\u00e9langer, cr\u00e9ant un effet de cisaillement et une cuisson.\u00a0 Un c\u00f4ne hydraulique sert \u00e0 cr\u00e9er une contre-pression dans le fourreau, augmentant encore la temp\u00e9rature de cuisson du produit.<\/p>\n<p>Ces machines pr\u00e9sentent g\u00e9n\u00e9ralement des taux de cisaillement inf\u00e9rieurs \u00e0 ceux de notre extrudeuse \u00e0 sec \u00e0 cisaillement \u00e9lev\u00e9 s\u00e9rie 2000.\u00a0 Cela peut entra\u00eener des pressions et temp\u00e9ratures moindres dans le fourreau, alors que ces param\u00e8tres doivent rester \u00e9lev\u00e9s pour d\u00e9sactiver les facteurs antinutritionnels contenus dans les graines ol\u00e9agineuses.\u00a0 Afin d\u2019obtenir des temp\u00e9ratures de cuisson plus \u00e9lev\u00e9es, il est courant d\u2019injecter de la vapeur dans le fourreau de l\u2019expandeur pour augmenter les temp\u00e9ratures.\u00a0 Un inconv\u00e9nient de cette m\u00e9thode est la n\u00e9cessit\u00e9 de s\u00e9cher le produit final \u2013\u00a0autrement, il suffit simplement de le refroidir avant le stockage.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-14779\" src=\"https:\/\/insta-pro.com\/wp-content\/uploads\/2021\/03\/Picture1-300x116.png\" alt=\"\" width=\"300\" height=\"116\" srcset=\"https:\/\/instapro.spinuhost.com\/wp-content\/uploads\/2021\/03\/Picture1-300x116.png 300w, https:\/\/instapro.spinuhost.com\/wp-content\/uploads\/2021\/03\/Picture1-564x217.png 564w, https:\/\/instapro.spinuhost.com\/wp-content\/uploads\/2021\/03\/Picture1.png 625w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n<p>Les expandeurs sont couramment utilis\u00e9s dans l\u2019industrie de transformation des ol\u00e9agineux par solvant, par exemple.\u00a0 La capacit\u00e9 des expandeurs \u00e0 rompre partiellement les structures cellulaires rend le processus d\u2019extraction par solvant plus efficace.<\/p>\n<p>En revanche, les extrudeuses \u00e0 vis unique \u00e0 sec \u00e0 cisaillement \u00e9lev\u00e9 obtiennent des r\u00e9sultats excellents en mati\u00e8re de pourcentage de cuisson (g\u00e9latinisation), de disponibilit\u00e9 des nutriments et de d\u00e9sactivation des facteurs antinutritionnels.\u00a0 Cela ne signifie pas que les expandeurs n\u2019en sont pas capables, mais en raison des vitesses d\u2019arbre accrues de l\u2019extrudeuse, de ses jeux plus r\u00e9duits et du cisaillement accru, ces propri\u00e9t\u00e9s sont augment\u00e9es.<\/p>\n<p>\u00c0 mesure que le produit progresse le long du fourreau de l\u2019extrudeuse \u00e0 sec \u00e0 haut cisaillement, le m\u00e9lange et la production de chaleur due au cisaillement provoquent des changements du produit au niveau cellulaire. Cela am\u00e9liore sa digestibilit\u00e9 et la disponibilit\u00e9 des nutriments.\u00a0 La conception de l\u2019extrudeuse permet une restriction modulable en fonction des propri\u00e9t\u00e9s de la mati\u00e8re premi\u00e8re.\u00a0 Son encombrement au sol plus faible permet \u00e9galement de l\u2019installer dans les endroits trop exigus pour un expandeur classique.\u00a0 Les avantages suppl\u00e9mentaires de ne pas avoir besoin d\u2019une chaudi\u00e8re pour la production de vapeur et\/ou de chaleur pour le s\u00e9cheur font de l\u2019extrudeuse \u00e0 cisaillement \u00e9lev\u00e9 un choix plus judicieux pour une grande vari\u00e9t\u00e9 d\u2019applications.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-14783\" src=\"https:\/\/insta-pro.com\/wp-content\/uploads\/2021\/03\/Picture2-300x169.jpg\" alt=\"\" width=\"300\" height=\"169\" srcset=\"https:\/\/instapro.spinuhost.com\/wp-content\/uploads\/2021\/03\/Picture2-300x169.jpg 300w, https:\/\/instapro.spinuhost.com\/wp-content\/uploads\/2021\/03\/Picture2-1024x576.jpg 1024w, https:\/\/instapro.spinuhost.com\/wp-content\/uploads\/2021\/03\/Picture2-768x432.jpg 768w, https:\/\/instapro.spinuhost.com\/wp-content\/uploads\/2021\/03\/Picture2-570x320.jpg 570w, https:\/\/instapro.spinuhost.com\/wp-content\/uploads\/2021\/03\/Picture2-750x422.jpg 750w, https:\/\/instapro.spinuhost.com\/wp-content\/uploads\/2021\/03\/Picture2-564x317.jpg 564w, https:\/\/instapro.spinuhost.com\/wp-content\/uploads\/2021\/03\/Picture2-940x529.jpg 940w, https:\/\/instapro.spinuhost.com\/wp-content\/uploads\/2021\/03\/Picture2.jpg 1428w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n<p>Comme toujours, le choix final d\u00e9pendra de nombreux facteurs.\u00a0 Les performances finales du produit devraient \u00eatre le crit\u00e8re le plus important, car ce sont celles-ci qui permettront un retour sur investissement maximal du point de vue du rendement.\u00a0 Bien qu\u2019il existe des similitudes entre ces deux machines, ce sont leurs sp\u00e9cificit\u00e9s propres qui permettront de faire le bon choix.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Nous discutons souvent avec des clients qui utilisent de mani\u00e8re indiff\u00e9renci\u00e9e les termes \u00ab\u00a0extrudeuse\u00a0\u00bb et \u00ab\u00a0expandeur\u00a0\u00bb.\u00a0 On comprend ais\u00e9ment comment cette confusion peut survenir.\u00a0 Les deux types de machine ont des fourreaux qui transforment les produits en les \u00ab\u00a0extrudant\u00a0\u00bb en sortie.\u00a0 Or, il faut comprendre les diff\u00e9rences entre ces deux processus afin de maximiser la [&hellip;]<\/p>\n","protected":false},"author":68,"featured_media":14446,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[8610],"tags":[596,845,652],"class_list":["post-14826","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ingenierie-et-procede-dextrusion","tag-entretien-de-lequipement-dextrusion-fr","tag-extruder-fr","tag-equipment-fr"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.2 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Extrudeuse contre Expandeur - Insta-Pro<\/title>\n<meta name=\"description\" content=\"Nous discutons souvent avec des clients qui utilisent de mani\u00e8re indiff\u00e9renci\u00e9e les termes \u00ab\u00a0extrudeuse\u00a0\u00bb et \u00ab\u00a0expandeur\u00a0\u00bb.\u00a0\" \/>\n<meta name=\"robots\" content=\"index, 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