Abstract: An infant diaper has a coherent absorbent pad with a pair of exterior longitudinal pad margins oppositely disposed to each other. The absorbent pad area has a central pad area in combination with an opposed pair of absorbent border pad areas, each one of the opposed border pad areas has one longitudinal boundary margin adjacently coextensive with one longitudinal boundary margin of the central pad area. A central optimum pad area can have a discrete weight greater than each one of the border pad areas. A pair of parallel, narrow width pleats are disposed the full longitudinal pad axis length. Each one of the pair of pleats can be formed of the central pad area and are disposed on the same first face of the central pad area adjacent to the longitudinal boundary margin of the central pad area. Each one of the pleats can have a pleat apex disposed nearer or further from the central longitudinal pad axis than the corresponding companion pleat base fold.

Abstract: In an infant disposable diaper the absorbent diaper pad for body excreta has a pair of narrow width pleats disposed in the absorbent pad. Each one of the pleats being oppositely disposed parallel along the full longitudinal length of the diaper pad, the pair of pleats being separated by a suitable width of absorbent pad, providing a central pad channel width as a urine and feces trap and an excreta channel pad area suitable for containment of excreta between the pleat pair. Each one of the pad pleats can be formed of the central optimum pad area and each pleat is disposed on the exterior first face of the diaper pad. Each pleat is disposed adjacent to the longitudinal exterior margin of the central pad area. A thin, flexible, fluid impermeable membrane is contiguously disposed coextensive with the second face of the diaper pad area. The impermeable membrane is specifically excluded from contact with the side width values of the pair of narrow width pleat sides.