Method for delivering faster a short coffee extract from...

A - Human Necessities – 47 – J

Patent

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A47J 31/40 (2006.01) A23F 5/08 (2006.01)

Patent

CA 2658707

Method for delivering a short coffee extract faster from a closed capsule containing ground coffee by injecting water under pressure within the capsule. The capsule is filled with ground coffee, has a delivery membrane and is extracted in a coffee extraction device and pressurized water is injected in the capsule under pressure. The coffee beverage is released through the beverage delivery membrane of the capsule with engaging means engaging in and/or against the membrane. The pressure loss is reduced in the coffee bed by providing ground coffee having a reduced percentage of fines (F) depending on the average particle size (D4,3). The extraction yield is maintained between 15 and 30% and the coffee extract of 25 or 40 grams is delivered in a flow time of 20 seconds or less.

L'invention concerne un procédé de libération plus rapide d'un extrait de café court à partir d'une capsule fermée contenant du café moulu par injection d'eau sous pression dans la capsule. La capsule est remplie de café moulu, présente une membrane de libération et est extraite dans une dispositif d'extraction de café et de l'eau sous pression est injectée dans la capsule sous pression. La boisson de café est libérée à travers la membrane de libération de boisson de la capsule à l'aide de moyens de contact s'engageant dans et/ou venant en contact contre la membrane. La perte de pression est réduite dans le lit de café par insertion de café moulu présentant un pourcentage réduit de particules fines (F) dépendant de la dimension moyenne des particules (D4.3). Le rendement d'extraction est maintenu entre 15 et 30 % et l'extrait de café de 25 ou 40 grammes est libéré dans un temps d'écoulement inférieur ou égal à 20 secondes.

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