what is roughness of tablet coating ,logo bridging,what is orange peel,types of coating defects.
Channel: समाधान  फार्मेसी
Date: 15/01/2022

ROUGHNESS  means when the coating solution spray in tablet bed but some droplets of tablet before drying so thats cough roughness 
cause of toughness 
1 high dgree of automization 
2 high drying rate 
3 nozzles to bed distance in close 
if the roughness is more its means excissive toughness also known as ORANGE PEEL due to the improper spreading of coating solution in tablet before drying cause of orange peel

1 high degree of automazation air pressure 
2 high drying rate 
3 slow speed of pan 
4 high viscosity of solutions
if the optimization of automations air pressure to prevent orange peel 
optimizing drying rate 
optimizing pan peed 
LOGO BRINGING
 means when the logo of the tablets does not show its means the coating solutions speeding on tablets bed in high amount and the logo of tablets don't show and breakline of tablet full coat with coating solution 
CAUSE 
1 high rate of spray 
2 improper automization
3 improper formulation
4 poor punch logo design
5 high viscosity 
solutions 
reduced the spray rate 
proper automization 
reduced viscosity of coating solution 
proper punch design