Composite nonwoven material process of manufacture and its application to any absorbent article of hygiene

Process for the manufacture of a composite nonwoven material, characterized in that it comprises the stages consisting in:

• forming a carded voile of hydrophobic thermoplastic fibers;
• partially disorienting the fibers of the carded voile to obtain in at least a proportion of the thickness of the carded voile an angular orientation of the fibers in relation to the main plane of the fibers of the carded voile;
• forming a voile made of nonwoven of noncarded type, of hydrophobic thermoplastic fibers;
• superposing the carded voile with partially disoriented fibers and the voile made of nonwoven or noncarded type to obtain a first layer of carded voile and a second layer of voile made of nonwoven of noncarded type, the fibers of at least one of the layers being chosen from fibers with a low melting point, two-component fibers, mixtures of such fibers with fibers of high melting point and fibers mixed with a binder;
• and
• bonding the layers together by heat-melting.

Process for the manufacture of a composite nonwoven material, characterized in that it comprises the stages consisting in:

• forming a carded voile of hydrophobic thermoplastic fibers;
• partially disorienting the fibers of the carded voile to obtain in at least a proportion of the thickness of the carded voile an angular orientation of the fibers in relation to the main plane of the fibers of the carded voile;
• forming a voile made of nonwoven of noncarded type, of hydrophobic thermoplastic fibers,
• coating one of the faces of one of the said voiles with a binder;
• superposing the carded voile with partially disoriented fibers and the voile made of nonwoven of noncarded type to obtain a first layer of the carded voile and a second layer of the voile made of nonwoven of noncarded type so that the said binder-coated face forms an interface between the said layers;
• and
• bonding the layers to each other by heat-melting.