Fluidization of particles for encapsulation in oral dosage...

B - Operations – Transporting – 65 – B

Patent

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B65B 1/20 (2006.01)

Patent

CA 2521559

Encapsulated oral dosage pharmaceutical products are produced utilizing a system (1) including a hopper (2) and a dosator (10), where the hopper (2) receives particles having irregular geometries and sizes greater than about 100 ~m for delivery to the dosator (10). A gaseous fluid is directed into the hopper (2) to fluidize particles within the hopper (2) so as to minimize or eliminate the formation of voids within the bed of particles disposed within the hopper (2). The fluidization of the particles within the hopper (2) maintains a substantially continuous and uniform flow of particles from the hopper (2) to the dosator (10), which results in the formation of encapsulated products with desirable weights and particle size distributions.

L'invention concerne des produits pharmaceutiques à dosage oral encapsulés qui sont produits au moyen d'un système (1) comprenant une trémie (2) et un doseur (10), la trémie (2) recevant des particules qui présentent des géométries et des tailles irrégulières supérieures à environ 100 µm à distribuer au doseur (10). Un fluide gazeux est dirigé dans la trémie (2) afin de fluidiser les particules situées dans la trémie (2) de manière à minimiser ou éliminer la formation de vides dans le lit de particules disposées dans la trémie (2). La fluidisation des particules dans la trémie (2) permet de maintenir un flux de particules sensiblement continu et uniforme depuis la trémie (2) vers le doseur (10), ce qui aboutit à la formation de produits encapsulés présentant des masses et des granulométries particulaires utiles.

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