Method for making a topsheet for use in disposable body fluid ab

Details Method for making a topsheet for use in disposable body fluid ab Method for making a topsheet for use in disposable body fluid ab

1994-11-30

1997-05-13

Ball, Michael W.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156167, 156290, 428138, B32B 3100, A61F 1315

Patent

active

056288441

ABSTRACT:
A topsheet for use in body fluid absorptive articles is so improved that collapse and clogging of liquid passages therein may be reliably avoided. The topsheet includes an upper sheet, provided with skin-contacting areas and liquid passages, and a lower sheet provided with skin-non-contacting areas, areas welded to the liquid passages, and exposed areas. The exposed areas are welded to each of the liquid passages around lower openings thereof so as to protect the liquid passage against collapse and clogging. The exposed areas define a skin-contacting surface which rises up into each of the liquid passages without extending above the upper surface of the skin-contacting areas. The upper sheet cooperates with the lower sheet to define cavities extending in the direction of the topsheet thickness.

REFERENCES:
patent: 4397644 (1983-08-01), Matthews et al.
patent: 4634440 (1987-01-01), Widlund et al.
patent: 4741941 (1988-05-01), Englebert et al.
patent: 5171238 (1992-12-01), Kajander
patent: 5522811 (1996-06-01), Igaue et al.

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