AQ-Z Wb
Aqueous film coat, white or colour
Water base ready-mix film coat supplied white or in your agreed shade.
Application
General purpose aqueous film coating for immediate release tablets. It is dispersed in purified water and applied as a white or coloured film coat, giving a smooth, glossy surface with well defined logo definition.
How it runs
Dispersed in purified water and sprayed onto a warmed bed. On a 12 inch conventional pan the charge is small and the pan turns fast, so spray rate is the limiting factor. On a 36 or 48 inch auto coater the charge is large and pan speed drops, so inlet temperature and air volume carry the drying instead. Aqueous grades run the hotter of the two bands, around 35 to 40 degrees at the bed against a 75 to 80 degree inlet. Build-up is taken to the point where the core no longer shows and logo definition stays clean.
Build-up and solids are fixed at trial.
Part of the Film Coating System range.
- Product code
- AQ-Z Wb
- Coating system
- Film Coating System
- Process base
- Aqueous
- Finish
- White or colour, high gloss
- Supply form
- Ready-mix, dispersed on site
Starting parameters
Rglax Coat film coating
Tablet bed and inlet temperatures are given as aqueous over non-aqueous (AQ / NAQ). Settings are indicative and confirmed against your core during trials.
| Coating equipment | Conventional coaterAQ / NAQ12 inch pan | Auto coaterAQ / NAQ24 inch pan | Conventional coaterAQ / NAQ36 inch pan | Auto coaterAQ / NAQ48 inch pan |
|---|---|---|---|---|
| Pan speed (rpm) | 18 to 20 | 14 to 16 | 8 to 12 | 3 to 5 |
| Tablet charge (kg) | 0.5 to 1 | 3 to 5 | 40 to 50 | 100 to 130 |
| Tablet bed temp (°C) | 35-40 / 30-35 | 35-40 / 30-35 | 35-40 / 30-35 | 35-40 / 30-35 |
| Inlet temp (°C) | 75-80 / 60-65 | 75-80 / 60-65 | 75-80 / 60-65 | 75-80 / 60-65 |
Common questions about AQ-Z Wb
Is AQ-Z Wb supplied in colour or only white?
Both. It is a water base ready-mix film coat supplied white or in the shade agreed against your reference sample. The process is identical either way.
What limits the run on a small pan?
Spray rate. On a 12 inch conventional pan the charge is 0.5 to 1 kg and the pan turns at 18 to 20 rpm, so how fast you can spray without wetting the bed is the constraint. On a 36 or 48 inch auto coater the charge is large and pan speed drops, so inlet temperature and air volume carry the drying instead.