Absorbent article having a composite breathable backsheet
AssigneeKimberly-Clark Worldwide, Inc.
InventorsKristeen Elaine Good, Allen Todd Leak, Dale Arthur Peterson, Daniel Robert Schlinz
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Abstract
An absorbent article includes a substantially liquid impermeable, vapor permeable composite backsheet, a liquid-permeable topsheet positioned in facing relation with the backsheet and an absorbent body located between the backsheet and topsheet. The composite backsheet includes a polymeric film of relatively low basis weight and a nonwoven facing layer which enhances the strength of the composite backsheet and a provides a clothlike feel to the composite backsheet.
Claims47
An absorbent article which includes an absorbent and a substantially liquid impermeable, vapor permeable composite backsheet which comprises:
- a) a substantially liquid impermeable, vapor permeable film which defines a basis weight of less than about 20.0 grams per square meter;
- and
- b) a nonwoven facing layer which is attached to a garment facing surface of said film and which defines a strength in a machine direction of at least about 3000 grams at an elongation of 30 percent.
An absorbent article which comprises:
- a) a substantially liquid impermeable composite backsheet which includes a polymeric film which defines a basis weight of less than about 20.0 grams per square meter and a nonwoven facing layer attached to a garment facing surface of said film, wherein said composite backsheet defines a water vapor transmission rate of at least about 500 g/sq.m/24 hr as determined according to a Water Vapor Transmission Rate test set forth herein and a hydrohead value of at least about 50 centimeters as determined according to a Hydrostatic Pressure Test set forth herein;
- b) a liquid permeable topsheet which is positioned in facing relation with said composite backsheet;
- and
- c) an absorbent body located between said composite backsheet and said topsheet.
An absorbent article which includes an absorbent and a substantially liquid impermeable, vapor permeable composite backsheet which comprises:
- a) a substantially liquid impermeable, vapor permeable polyethylene film which includes at least about 20 weight percent filler particles and which defines a basis weight of less than about 20.0 grams per square meter;
- and
- b) a meltblown facing layer which is attached in facing relation to a garment facing surface of said film and which defines basis weight of less than about 30.0 grams per square meter and a hydrohead value of at least about 50 centimeters as determined according to a Hydrostatic Pressure Test set forth herein;
- wherein a ratio of a strength of said composite backsheet to a strength of said film in a machine direction at an elongation of 30 percent is at least about 2:1.
Dependencies are inferred from the claim text.