Absorbent article and absorbent core forming channels when wet

• Main Authors: HOLLENBERG DORIS, BIANCHI ERNESTO GABRIEL, EHRNSPERGER BRUNO JOHANNES, RINNERT THORSTEN
• Format: Patent
• Language: English
• Published: 20.01.2016
• Subjects: BANDAGES, DRESSINGS OR ABSORBENT PADS; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; FILTERS IMPLANTABLE INTO BLOOD VESSELS; FIRST-AID KITS; FOMENTATION; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; PROSTHESES; TREATMENT OR PROTECTION OF EYES OR EARS

An absorbent article (20) for personal hygiene comprising a liquid permeable topsheet (24), a liquid impermeable backsheet (25), an absorbent core (28) and a fibrous layer (54). The absorbent core comprises a core wrap and an absorbent material (60) with superabsorbent polymers (SAP). The core wrap comprises a top side (16) and a bottom side (16') bonded to one other through one or more area(s) (26) substantially free of absorbent material (60). The fibrous layer (54) is at least partially bonded to one of the sides of the core wrap in the area(s) (26) substantially free of absorbent material. When the absorbent material swells, the core wrap forms one or more channel(s) (26') along the area(s) (26) substantially free of absorbent material. The formation of the channel(s) (26') in the absorbent core causes the formation of one or more corresponding ditches (29) in the fibrous layer. The core wrap bond (27) may be designed to delaminate in a controllable manner when loaded with fluid. An absorbent core (28) having these delimitation characteristics is also claimed.