Media binder arrangement and a method of manufacturing a media binder

Media binder arrangement (10) comprising,

• a cover (11) with a front (12), a back (13) and a spine (14) extending along a spine axis (141);
• at least one spring clamp (15) attached to the spine (14) and which spring clamp (15) having a first side (16) with a first clamping side edge (161) and a second side (17) with second clamping side edge (171) which side edges (161, 171) exerting a spring force towards each other in an activated position and that the sides (16, 17) at a distance from the side edges (161, 171) are, joined with a clamp base (18) thereby defining an interior cavity (19) in the spring clamp (15) and that each side (16, 17) having an acute angle towards the clamp base (18);
• a tension sheet (20) mounted inside the cavity (19) and protruding out from the cavity (19) next to each of the respective side edges (161, 171) and firmly attached to the cover (11);
• a datum spacer (30) mounted inside the cavity (19) holding the tension sheet (20) towards the clamp base (18) of the spring clamp (15);
• characterized in that
• the interior cavity (19) of said spring clamp (15) additionally is formed with a datum spacer cavity (35) having spacer walls (36, 37) limited from the sides (16, 17) by a bending and that the spacer walls (36, 37) having wall surfaces facing the clamp base (18) for holding the datum spacer (30) m abutment with the clamp base (18).