Absorbent core structures having undulations

An absorbent core structure comprising

• at least one acquisition region, said acquisition region being constructed from a first fibrous material, said acquisition region having a relatively low density from about 0.018 g/cc to about 0.20 g/cc;
• at least one distribution region, said distribution region being constructed from a second fibrous material;
• said distribution region being consolidated to have a relatively medium density from about 0.024 g/cc to about 0.45 g/cc, said distribution region being in fluid communication with said acquisition region, said distribution region having at least one peak and at least one valley;
• and
• at least one storage region, said storage region being constructed from a third fibrous material, said storage region being consolidated to have a relatively high density from about 0.030 g/cc to about 0.50 g/cc, said storage region being in fluid communication with said distribution region, said storage region having at least one peak and at least one valley;
• said first fibrous material, said second fibrous material and said third fibrous material being laid on top of each other in order to form said absorbent core structure.