| 摘要 |
A DISPOSABLE DIAPER INCLUDES A TOPSHEET, A BACKSHEET AND AN ABSORBENT CORE THEREBETWEEN. THE BACKSHEET IS MADE OF AN AIR-PERMEABLE BUT LIQUID-IMPERMEABLE PLASTIC FILM HAVING A SURFACE THEREOF WHITENED BY FINE PARTICLES OF AN INORGANIC SUBSTANCE CONTAINED THEREIN. AN INDICATOR 18 PROVIDED BETWEEN THE BACKSHEET AND THE ABSORBENT CORE. THE INDICATOR INCLUDES A LAYER OF PRINTED INK ADAPTED TO BE VISUALLY REVEALED WHEN IT IS WETTED WITH DISCHARGED URINE AND A MASKING REGION DISPOSED BETWEEN LAYER OF PRINTING INK AND THE BACKSHEET SO AS TO COVER THE LAYER OF PRINTED INK, AND THE MASKING REGION CONTAINS A SURFACTANT.
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