Patent ID: 7247013
Filing Date: 2007-07-24
Classification: B30B,Y10S

Abstract:
1. A powder compacting apparatus for continuous pressing of pharmaceutical powder into a compressed substrate comprising: A. a main housing means adapted to receive powder for compacting thereof; B. a primary roller means rotatably mounted adjacent said to said main housing means and being rotatably driven with respect thereto, said primary roller means including a primary circumferential compacting surface extending circumferentially therearound to facilitate compacting of powder moved thereadjacent, said primary roller means including an inner primary roller side means and an outer primary roller side means oppositely disposed therefrom; C. a secondary roller means rotatably mounted adjacent said main housing means at a position immediately adjacent to said primary roller means and defining a roller compacting zone therebetween, said roller compacting zone being in flow communication with respect to said main housing means to receive powder therefrom for compacting thereof between said primary roller means and said secondary roller means, said secondary roller means including a secondary circumferential compacting surface extending circumferentially therearound to facilitate compacting of powder moved thereadjacent, said secondary roller means and said primary roller means being rotatably driven such that said primary circumferential compacting surface and said secondary circumferential compacting surface move together in the same direction adjacent said roller compacting zone to facilitate movement of powder therethrough for compacting thereof into a compressed substrate, said secondary roller means including an inner secondary roller side means and an outer secondary roller side means oppositely disposed therefrom; D. a first dynamic side seal means positioned extending outwardly from adjacent said inner primary roller side means of said primary roller means adjacent to said roller compacting zone to facilitate defining thereof, said first dynamic side seal means extending further outwardly to a position adjacent said inner secondary roller side means of second secondary roller means to facilitate defining of said roller compaction zone thereadjacent and to prevent movement of powder outwardly laterally from said roller compacting zone past said inner primary roller side means and said inner secondary roller side means during compressing of powder moving through said roller compacting zone; and E. a second dynamic side seal means positioned extending outwardly from adjacent said outer primary roller side means of said primary roller means adjacent to said roller compacting zone to facilitate defining thereof, said second dynamic side seal means extending further outwardly to a position adjacent said outer secondary roller side means of said secondary roller means to facilitate defining of said roller compaction zone thereadjacent and to prevent movement of powder outwardly laterally from said roller compacting zone past said outer primary roller side means and said outer secondary roller side means during compressing of powder moving through said roller compaction zone, said first dynamic side seal means and said second dynamic side seal means are each independently driven to be selectively capable of rotational movement speeds different from one another and selectively different from the rotational speed of said primary roller means and said secondary roller means.