ABSTRACT
It is a measure of thread density in the fabric. The normal method used to determine thread density is to use a pick glass.
EPI and PPI affects the compactness of the fabric. It is also known as thread count or cloth count. Thread counts range from as low as 20 threads per inch as used in tobacco cloth to as high as 350 threads per inch, which is found in typewriter ribbon fabrics. Normally EPI and PPI of a fabric are described as EPI × PPI. Thus, a fabric of 74 × 66 means 74 EPI and 66 PPI.
