Patent ID: 6204210
Filing Date: 2001-03-20
Classification: A61F,Y10T

Abstract:
A composite nonwoven material comprising:a lower outer layer made of a nonwoven material permeable to body fluids and having a first melting point,an upper outer layer made of a nonwoven material permeable to body fluids and having a melting point near said first melting point,a synthetic fiber lap permeable to body fluids being arranged between said outer layers, said fiber lap comprising loose carded filaments made of a material having a second melting point substantially higher that said first melting point, the outer layers being assembled together by hot melting according to a pattern forming a network of spots, said hot melting having been made at a temperature near said first melting point so that the filaments of said fiber lap remain unmelted when said upper and lower outer layers are hot melted,the upper outer nonwoven layer comprising a hydrophilic longitudinal central zone delimited by continuous weld lines made between the two outer layers and forming barriers to the transverse diffusion of body fluids, andsaid hydrophilic longitudinal central zone including a perforated central zone having perforations extending all the way through the outer layers and the synthetic fiber lap.