Cold isostatic pressing is a process in which the powder/granulate is pressed uniformly in all directions. 
The granulate is placed in a flexible rubber mould. Once full, the mould is immersed in a not compressible liquid which transmits the pressure (up to 4000 bar ) uniformly in all points and in all directions.

Benefits: 

• equal compression ratios (hydrostatic) give highly homogeneous density of the green (not sintered) product in both the axial and radial direction
• the same uniform shrinkage and mechanical resistance throughout the product
• higher mechanical and chemical resistance than an axially pressed product

Disadvantages: 

• high production costs
• low automation