Lab Coater

TABLET AND PELLET MINI COATER DRIER--MCD - 2

DESCRIPTION   

The MCD - 2 Bench Top Spray Coater–Drier is a small-scale combination film spray coater and fluid bed dryer. This bench top formulation research tool is designed to apply a liquid coating onto the external surface of as little as one tablet or capsule or a small quantity ( typically 1–20 grams ) of beads, pellets, spheroids or similar solid or hollow– shaped pieces and thereafter, dry the applied coating.

Examples of typical pieces and sizes include in the following:

  Round, flat faced tablet 1 mm up to 10 mm diameter

  Oblong, oval or caplet shaped tablets 1 mm up to 10 mm length

 Cylindrical shaped pellets 1 mm up to 10 mm length

  Hollow or solid ball shaped pieces 1 mm up to 10 mm diameter

  Beads or spheroids Equal or greater than 500 u ( micron ) diameter

The maximum operating air temperature is 60 C. The maximum sustainable air velocity is 16 meters per second.

OPERATION

A fluid bed is produced by the application of a variable, controllable and heated air flow that works in combination with a user selectable electrically controlled, mechanical vibration mechanism. The vibration of the conical chamber helps to prevent product sticking to the chamber walls and screen. Air flow is generated by means of a fan is introduced from the bottom of the chamber. The temperature of the airflow is controlled by means of an electric heater with a temperature feedback loop. The heated air is used to simultaneously fluidize the product and dry the coating as it is applied via the coating spray nozzle.

The electrically controlled mechanical vibration mechanism oscillates and is variable

in frequency ( 10–25 Hertz ). The amplitude is fixed at 3.0 millimetres.

A precision peristaltic pump meters the liquid flow rate between 5 and 50 ml per hour

the binary nozzle/ atomizer. The liquid coating is atomized in a downward conical spray pattern and propelled onto the external surface of the product. The net effective conical spray angle is ~ 18 degrees. The pressure of the compressed atomizing air / gas is manually controlled by means of a pressure regulator with an analogue pressure gauge.

Coating rates will be influenced and determined by:

  Geometry, weight and quantity of pieces to be coated

  Type and concentration of liquid coating

  Liquid coating rate

  Nozzle net effective spray angle, spray pattern, and compressed air / gas pressure

  Air flow, air velocity and air temperature

TYPICAL ELAPSED TIME

The typical elapsed time ( to spray apply a coating liquid on to the external surface area of sample piece( s ) is approximately 15 - 30 minutes. A resettable timer is included in the scope of supply.

CONTROL

 LCD display: 115 mm wide x 65 mm high

 Elapsed timer  With START / STOP button and RESET button

 Agitator  Pushbutton with indicator light and separate adjustment dial

 Pump  Pushbutton with indicator light and separate adjustment dial

DIMENSIONS

 500 mm wide x 550 mm deep x 380 mm high (plus 240 mm for the vertical stand holdingthe spray head).

 Positioning fluid nozzle atomizer assembly on top of the enclosure brings the overall height to approximately 762 mm.

 Approximate Nominal Weight is 32kilograms.