| 摘要 |
The article comprises a sheet with at least one fibrous layer, having at lea st one cavity at least partly housing an element of a certain thickness. This cavit y is covered by a structure comprising at least one layer of plastic, metal or fibrous material, or by a layer deriving from the application of a film-forming composition. The at least one layer of the structure includes a plurality of film or fibrous portions spaced apart on the surface of the sheet.
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