Liner reel, cassette comprising said liner reel, let off station and method for collecting a liner

A liner reel for collecting a liner, wherein the liner reel comprises a core and a shell that is concentrically mountable to said core for rotation together with said core about a liner reel axis, wherein the shell comprises a collection wall that extends in a circumferential direction about the liner reel axis when the shell is mounted to the core, wherein the collection wall is arranged for receiving the liner, wherein the core comprises one or more support members for supporting the collection wall at least with a vector component in a radial direction perpendicular to the liner reel axis, wherein said collection wall is at least partially contractible in said radial direction when the shell is removed from the core, wherein the shell has a first side that is open in a mounting direction parallel to the liner reel axis so that the shell can be slid over the core and a second side facing away from the core in a removal direction opposite to the mounting direction when the shell is mounted to the core, wherein the shell comprises a plurality of first slots dividing said collection wall in the circumferential direction into a plurality of wall segments that are interconnected only at the second side, wherein the plurality of wall segments are individually flexible in the radial direction at the first side, the shell further comprises a front wall interconnecting the plurality of wall segments at the second side, wherein the front wall comprises a plurality of second slots which are continuous with the plurality of first slots and which extend in the radial direction towards the liner reel axis when the shell is mounted to the core.