Yes, FIBC’s can be used with or without liners depending on the needs of the product and the distribution environment.  Should a liner be needed, there are two basic styles of liners:
Form Fit: Designed to take the exact shape of the FIBC.  Form-Fit Liners will allow improved filling and complete discharging of product. Unlike a basic “tube liner”, Form-Fit Liners offer a flat top and bottom and incorporate a spout diameter and length to best compliment the FIBC’S fill and discharge spouts.
Tubular: A liner with no spouts or contours, it is a straight cylinder, which may or may not have one end heat-sealed.
Both of these liners can be loosely inserted or secured with ties, tabs or glue.  Liners can also provide antistatic or barrier properties such as oxygen, moisture or UV.