Defects of Tablets during Compression

December 9, 2016

20315

Sr.No.	Appearance Defects
1.	Capping:- ‘Capping’ is the term used, when the upper or lower segment of the tablet separates horizontally, either partially or completely from the main body of a tablet and comes off as a cap, during ejection from the tablet press, or during subsequent handling.
2.	Lamination / Laminating:- ‘Lamination’ is the separation of a tablet into two or more distinct horizontal layers.
3.	Sticking/filming: ‘ Sticking’ refers to the tablet material adhering to the die wall. Filming is a slow form of sticking and is largely due to excess moisture in the granulation.
4.	Cracking:- Small fine cracks observed on the upper and lower center surface of the tablets, or very rarely on the side wall are referred to as cracks.
5.	Chipping:- ‘ Chipping’ is defined as the breaking of tablet edges, while the tablet leaves the press or during subsequent handling and coating operation.
6.	Mottling:‘ Mottling’ is the term used to describe an unequal distribution of colour on a tablet.
7.	Double Impression: ‘ Double impression’ involves only those punches,which have a monogram or other engraving on them.