Absorbent cores having material free areas

An absorbent article for personal hygiene comprising:

• a liquid permeable topsheet;
• a liquid impermeable backsheet;
• an absorbent core disposed between the topsheet and the backsheet;
• and
• an acquisition/distribution layer disposed between the absorbent core and the topsheet;
• wherein the absorbent core comprises:
• a core wrap enclosing an absorbent material comprising a first layer and a second layer, wherein the first layer comprises superabsorbent polymer particles, the core wrap comprising a top side, a bottom side, and a plurality of zones, wherein the superabsorbent polymer particles are disposed within each zone in laterally-extending stripes, and wherein each individual zone of the plurality of zones comprises a different amount of superabsorbent polymer particles;
• a pair of areas substantially free of absorbent material disposed symmetrically relative to a longitudinal axis through which the top side of the core wrap is attached directly to the bottom side of the core wrap, so that when the absorbent material swells the core wrap forms a pair of channels along the areas substantially free of absorbent material and corresponding ditches, each area substantially free of absorbent material extends more in a longitudinal direction than in a transverse direction and does not extend up to any edges of an absorbent material deposition area;
• wherein the superabsorbent polymer particles have a time to reach an uptake of 20 g/g (T20) of less than 240 s, as measured according to the K(t) test method;
• and
• wherein the attachment between the top side core wrap and the bottom side core wrap is achieved through adhesive bonding, pressure bonding, ultrasonic bonding, heat bonding, or combinations thereof.