Method of making a flexible absorbent article with formed moisture barrier

A method of making an absorbent article, comprising the steps of:

• providing a formable sheet of liquid impermeable material;
• providing an absorbent assembly;
• providing a sheet of liquid permeable material;
• providing a mold surface;
• forming the formable sheet on the mold surface to produce a moisture barrier defining a basin and an integral rim surrounding the basin, the basin having a width dimension, a length dimension greater than the width dimension, and a volume, the basin comprising a floor having first and second longitudinally spaced end regions and an extendable region between the end regions, the extendable region having corrugations formed therein parallel to the width dimension, the corrugations beginning adjacent the rim and increasing in depth in the direction of the floor;
• disposing the absorbent assembly in the basin;
• bonding the sheet of liquid permeable material to the moisture barrier to sandwich the absorbent assembly therebetween;
• and
• disposing a pressure-sensitive adhesive on the floor solely in the end regions.