Abstract An apparatus for applying pharmaceutic tablets or the like with coat of other material such as sugar or the like is provided. The apparatus comprises a single drum supported for rotation and having a plurality of discrete perforation areas discretely provided along the cylindrical wall of the drum. These perforated areas are air-tightly covered by respective suction ducts which are adapted to be communicated with a stationary exhaust conduit disposed at one side of the drum every time when the corresponding perforated area comes to a predetermined angular position during the rotation of the drum. The supply of air to dry the coating of tablets is carried out by way of a supply conduit which is disposed at the other side of said drum and opens therein.
An apparatus for applying a coating on tablets comprising: a cylindrical drum supported for rotation about a substantially horizontal axis thereof; a plurality of perforated areas of said drum discretely provided about the drum; an equal plurality of suction ducts each fluid tightly covering one of said areas and adapted to rotate with said drum; a stationary exhause conduit; and means for alternately bringing one of said ducts iNto communication with said conduit and blocking the remainder of said ducts when the perforated area associated with said one duct assumes a predetermined angular position during the rotation of the drum.
Claim 2
Independent Claim
100 words
An apparatus for applying a coating on tablets comprising: a cylindrical drum supported for rotation about a substantially horizontal axis thereof; a plurality of perforated areas of said drum discretely provided about the drum; an equal plurality of suction ducts each fluid tightly covering one of said areas and adapted to rotate with said drum; a stationary exhause conduit; and means for alternately bringing one of said ducts iNto communication with said conduit and blocking the remainder of said ducts when the perforated area associated with said one duct assumes a predetermined angular position during the rotation of the drum.