Elastic absorbent material for sanitary wear

摘要

A multi-layered elastic sheet has at least one layer of rubber-elastic homogeneous film (1) attached to at least one nonwoven layer (2) of essentially inelastic, undrawn or partially drawn fibres or filaments. The layers are bonded intermittently and when the elastic layer is fully stretched the fibrous layer is flat but it bulges out when the elastic layer is relaxed. The nonwoven is perforated in numerous places from the outside through to the elastic layer by tearing or plucking. Also claimed is a process where pinned rollers (4) are used to bond the layers and tear the nonwoven at the same time. The elastic layer is then stretched to produce breaks (6) in the nonwoven, after which it is relaxed to puff up (7) the nonwoven. Also claimed is an alternative process where a nonwoven is produced by melt spinning or melt blowing which is perforated and then bonded to the elastic layer in areas which do not coincide with the perforations. The bonded material is then stretched and relaxed as before.