Flexible container liner wringing device and liner

A liner for use with an intermediate bulk material container, said liner comprising,

• a liner body having a top wall, a bottom wall, and a tubular side wall extending between said top wall and said bottom wall;
• an outlet fitment coupled to said tubular side wall, and
• a material volume increasing gap filler coupled to said top wall in a position above said outlet fitment, said gap filler having a longitudinal length and a lateral width for increasing the material volume of at least select portions of the liner in a gathered configuration,
• wherein said lateral width of said material volume increasing gap filler varies along at least a majority of said longitudinal length of said material volume increasing gap filler.

A liner for use with an intermediate bulk material container, said liner comprising,

• a liner body having a generally rectangular prism configuration having a top wall;
• an outlet fitment coupled to said liner body, and
• a gap filler coupled to said liner body, said gap filler being a length of flexible material mounted to and extending across at least a portion of said top wall,
• wherein said gap filler has a longitudinal length and a lateral width which varies along at least a majority of said gap filler length.