Absorbent cores having channel-forming areas and C-wrap seals

A absorbent core extending in a transversal direction and a longitudinal direction, the absorbent core having a front edge, a back edge and two longitudinally extending side edges, the absorbent core comprising:

• (a) a core wrap comprising a first substrate and a second substrate wherein each substrate comprises an inner surface and an outer surface;
• (b) an absorbent material comprising a periphery defining an absorbent material deposition area, between the first substrate and the second substrate, the absorbent material deposition area encompassing one or more areas substantially free of absorbent material;
• and
• (c) an auxiliary glue applied directly to the inner surface of the first substrate and defining an auxiliary glue application area;
• wherein the auxiliary glue at least partially bonds the inner surface of the first substrate to the inner surface of the second substrate through the one or more areas substantially free of absorbent material, so that when the absorbent material swells, the core wrap forms channels in the areas substantially free of absorbent material that have a width from 2 mm to 20 mm;
• wherein the auxiliary glue application area is smaller than the absorbent material deposition area and the first substrate and/or the second substrate comprises at least one outwardly extending flap which is folded around at least one of the front, back, or any of the side edges of the core, and the at least one flap is bonded to the external surface of the other substrate to form a C-wrap seal along the at least one edge of the absorbent core;
• and
• wherein the channels do not extend to any edge of the absorbent material deposition area.