MY102556A - Absorbent structure - Google Patents

Abstract

AN ABSORBENT STRUCTURE DESIGNED FOR USE IN ABSORBENT PADS SUCH AS DIAPERS IS PROVIDED WITH AT LEAST TWO LAYERS (5, 6) OF CELLUOSIC FIBERS (FLUFF) OF DIFFERENT DENSITIES OR AVERAGE PORE SIZE RANGES. WHEN THE ABSORBENT STRUCTURE IS INCORPORATED IN A DIAPER, THE LOWER DENSITY ELEMENT EXTENDS TO THE FULL LENGTH AND WIDTH DIMENSIONS OF THE NORMAL ABSORBENT COMPONENT OF THE DIAPER. THE HIGHER DENSITY ELEMENT LIES BENEATH AT LEAST A PORTION OF THE LOWER DENSITY ELEMENT. THE HIGHER DENSITY ELEMENT CAN RUN AS A STRIP FROM THE TARGET ZONE TO THE BACK WAIST OF A DIAPER, IT CAN RUN ALONG A CENTRAL PORTION EXTENDING THE WHOLE LENGTH OF THE DIAPER, OR IT CAN UNDERLIE THE ENTIRETY OF THE LOWER DENSITY ELEMENT. THE HIGHER DENSITY ELEMENT (OR THE ELEMENT HAVING A LOWER AVERAGE PORE SIZE) WICKS WASTE FLUID A LOWER CENTRAL PORTION OF THE DIAPER, AND THEREBY TRANSPORT THE FLUID UPWARDLY AND ALSO TRANSFERS IT TO THE LOWER DENSITY ELEMENT (OR THE ELEMENT OF GREATER AVERAGE PORE SIZE). A PORTION OF SUPERABSORBENT MATERIAL MAY BE PLACED BENEATH THE HIGHER DENSITY LAYER, (OR LAYER OF LOWER AVERAGE PORE SIZE), SUCH THAT AN ADDITIONAL RESERVOIR FOR ABSORBING WASTE FLUID IS PROVIDED.