Abstract: A method and apparatus for enveloping a series of absorbent cores with a fluid-permeable layer includes a first web supplying mechanism for providing a first layer of fluid-permeable material, and a depositing mechanism for positioning a series of absorbent cores on the first layer. Each of the absorbent cores defines a periphery thereof and includes superabsorbent material therein. A second web supplying means provides a second layer of fluid-permeable material to sandwich the absorbent cores between the first and second layers. A sealing mechanism secures the first layer to the second layer along an attachment region thereof which is located adjacent to at least a pair of side edge regions of the absorbent cores. The attachment region is constructed to substantially prevent movement of superabsorbent material from the absorbent cores through the attachment region.